Crane Yurginets self-propelled pneumatic wheel KS4361A. \ \ technical characteristics of special equipment Technical and lifting characteristics

The crane KS-4361 is based on a special all-wheel drive wheeled chassis equipped with dual pneumatic tires. The production of equipment under the Yurginets trademark began in the 70s. The car is intended for performance of installation and loading works on the open areas, and also in warehouses. Production was carried out at factories in Yurga and Kamyshin.

It is allowed to work equipment with a grab with a capacity of up to 1.5 m³. The working body is installed on an arrow with a length of 10.5 or 15.5 m. The maximum load weight in the bucket is 3700 kg. It is possible to install tower-boom equipment with a construction height of 15 or 20 m. In this case, a controlled boom with a reach of 10.5 m is used on the machine. The listed equipment is not included in the standard delivery.

Technical and lifting characteristics

Overall dimensions of the crane KS-4361A and technical characteristics:

length - 14500 mm;
width (with removed supports) - 3150 mm;
height (with the boom lowered to the transport position) - 3030 mm;
installation weight - 23700 kg;
turning radius - not less than 12 m;
carrying capacity when installing supports - 16 tons;
carrying capacity without additional supports - 9 t;
hook lifting height - 4.0-8.8 m (depending on the departure);
speed of lifting and lowering the load - up to 10 m / min;
platform rotation frequency - 0.5-2.8 rpm.

Device

The crane is based on a welded frame equipped with 2 bridges. The front steer axle is mounted on an equalizer support, which improves wheel traction on rough roads. Changing the angle of installation of the wheels is carried out by power hydraulic cylinders. The rear axle has a rigid suspension. A 2-speed manual gearbox is mounted in the center of the frame. Cardan shafts are used to transmit torque to the axles. Axle reducers include cylindrical and bevel gears.

On the side beams of the frame there are outriggers equipped with screw jacks. Installation and cleaning of knots is carried out from hydraulics of the crane. The use of supports increases the stability of the machine and contributes to an increase in load capacity. A turntable is installed on the upper surface of the frame, on which all the working units of the machine are mounted. To connect the platform and the frame, a 2-row ball shoulder strap with a ring gear is used.

See » Technical characteristics of the automobile crane KS-2561

Pneumowheel crane KS 4361A is equipped with a diesel power plant, which includes a 75-horsepower atmospheric 4-cylinder unit SMD-14A. The crankshaft of the engine is connected by an elastic coupling with a turbo-transformer, which allows you to smoothly adjust the operating speeds of the machine. Separately from the engine, a pneumatic system compressor is installed. Torque is transmitted by means of a V-belt transmission. A fan is used to cool the compressor.

The transmission consists of cam and gear clutches equipped with a hydraulic drive. The nodes include mechanisms for rotation and movement, respectively. A combined system with a pneumatic and hydraulic drive is used to control the lifting units. The winches are switched on by pneumatic chamber clutches; a similar drive is mounted on a reversing drive. The stop and fixation of the drums are carried out by band brakes.

The standard lattice boom of the crane has a length of 10.5 m; it is possible to install additional extension cords with a size of 5 m (up to 3 pcs.). Additionally, a fixed jib is mounted, having a length of 6 m. When using a jib, the length of the boom is limited to 20 m. At the base of the boom there is a hinge assembly; a protective stop is installed to prevent tipping onto the platform.

The machine has a torque converter designed to drive the working mechanisms of the crane.

A design feature is the installation of boom drive drums, a cargo hook and grab equipment on a single shaft.

The operator is placed in a closed metal cabin. The mechanisms are controlled by levers and pedals.

On a separate order, there are cars with an insulated cab equipped with an autonomous heater. The pneumatic system is equipped with a water vapor separator. The northern version of the crane allows you to work at an air temperature of -60 ° C.

Transportation

Inside the construction site, the equipment moves independently, developing a speed of up to 15 km / h. It is allowed to move with the payload installed on the crane boom. In this case, the assembly is located parallel to the longitudinal axis of the machine; permissible speed does not exceed 3 km/h.

To deliver equipment to the place of work, the method of towing on a rigid hitch is used. Trucks are used as a tractor; the speed of the road train is 20 km/h. When rebasing, the gearbox is transferred to the neutral position, the hydraulic cylinders installed on the controlled axle are turned off. Additionally, the cardan shaft is removed, which serves to drive the front axle.

See » TOP-3 models of domestic erection cranes based on MKT tractors

Delivery over a long distance is carried out by rail. Before loading, the wheels are removed from the machine, the boom is disassembled into component sections. The upper part of the knot is laid on the lower one. Loading is carried out by a crane installation with a lifting capacity of at least 25 tons. If the machine kit includes additional boom elements, they are transported on another railway platform.

Crane KS-4361 - diesel single-engine with turbotransformer ( torque converter). The set of working equipment includes the main boom 10 m, hook capacity 16 T and a grab with a capacity of 1.5 m3, hung on 10- and 15-meter arrows. Interchangeable equipment is extended boom length 15, 20 and 25 m, obtained from the main boom by inserting 5-meter sections, and a 6-meter unsteered jib m. The boom is equipped with a limiter that prevents it from tilting onto the platform when working at a minimum reach.
The crane uses a mixed control system - pneumohydraulic. The winch and reverse shafts, as well as the drums, are switched on with the help of pneumochamber clutches; the direction of movement of the mechanisms of rotation and movement of the crane is changed by the reversing mechanism and bevel gears. The inclusion of the reversing mechanism is also provided by pneumochamber clutches.
The working speeds of the crane are regulated over a wide range by means of a turbo-transformer fed from the hydraulic system of the crane.

Overall dimensions of the pneumatic wheel crane KS-4361

The running device of the crane is equipped with outriggers with screw jacks having small shoes at the ends.
On the site, the crane can move under its own power, including with a load on the hook at a speed of up to 3 km/h. Movement with a load on the hook is allowed on the site with a boom of 10 - 15 m directed along the longitudinal axis of the crane.
Over long distances by road, the crane is transported in tow to a tractor using a hitch. In the process of relocating the crane, the gearbox is set to the neutral position, the wheel turning cylinders are turned off, the cardan shaft of one of the axles is removed. The towing speed must not exceed 20 km/h, and on slopes and turns, the speed should be reduced to 3 km/h.
By rail, the crane is transported on a four-axle platform. Before the crane is loaded onto the platform, all pneumatic wheels are removed, the boom sections are disconnected, laying the upper section on the lower one. The crane is loaded onto the platform using an erection crane with a lifting capacity of 25 T. If there are replaceable boom sections, they are placed on the second platform.

Technical characteristics of the crane KS-4361

load capacity, T:
. on supports:
..	16
..	3,75
. without supports:
.. with the smallest hook reach	9
.. at maximum hook reach	2,5
hook flight, m:
.. smallest	3,75
.. largest	10
hook lifting height, m:
.. with the smallest hook reach	8,8
.. at maximum hook reach	4
Speeds:
.. lifting the main hook, m/min	10
.. lowering, m/min	0 - 10
.. turntable rotation frequency, rpm	0,5 - 2,8
.. self-propelled crane movement, km/h	3; 15
213
150
The smallest turning radius (along the outer wheel), m	12,2
The greatest angle of elevation of the path, hail	15
Engine:
.. brand	SMD-14A
.. power, hp	75
wheel track, m:
.. front	2,4
.. rear	2,4
crane weight, T	23,7
including counterweight, T	---

Lifting capacity when driving and climbing angle on the road in transport position

* - The lifting capacity is indicated with the boom located along the axis of the crane.
** - In the denominator - the permissible angle of inclination of the crane when working on outriggers.

Characteristics of the main and replaceable boom equipment of the crane KS-4361

Main boom length m	10
The greatest length of the elongated boom, m	25
The length of the uncontrolled jib, m	---
Tower boom equipment:
.. the maximum length of the additional boom, m	---
.. the maximum length of the tower, m	---
Grab capacity, m3	1,5

All executive bodies of the mechanisms on the KS-4361 crane are set in motion through a turbotransformer 35 .
Landing drums of the boom, cargo and auxiliary (grab) mechanisms - on a common shaft; thus, one three-drum winch was used.

Power take-off from engine to compressor 32 carried out with the help of a V-belt transmission 43 - 44 and cardan shaft 33 .
Motor rotation 34 turbo transformer 35 transmitted through the clutch 20 , the output shaft of the turbotransformer is connected by a chain drive 15 - 36 with shaft 9 reverse mechanism.
Shaft 10 three-drum winch connected to the shaft 9 bevel reverse gear 16 - 22 and chain drive 18 - 23 , and the gear 16 and an asterisk 23 have a tight fit on the shafts, and the sprocket 18 and gear wheel 22 rotate freely. They are activated using pneumatic chamber clutches. 19 And 14 planted on shafts. Depending on which gear is engaged (chain or gear), the shaft 10 forward or reverse rotation is reported.
As can be seen from the diagram, the boom drum 13 , cargo drum 12 main lift and load drum 11 auxiliary lift have a free fit on the shaft and are kept from rotation by band brakes. The drums are switched on with the help of pneumochamber clutches; at the same time, the drums are released.
on the shaft 9 bevel gears rotate freely 8 in constant engagement with the gear 7 vertical shaft 28 . Alternate engagement of pneumatic chamber clutches of gears 8 shaft reversal is provided 28 (clockwise or counterclockwise rotation).
Gears 6 , gear wheels 24 And 26 are in constant mesh, and the gear wheel 26 loosely seated on the shaft. It is activated with a clutch 27 , while the shaft 29 starts to spin. The gear rotates with the shaft 25 , rolling on the gear rim 5 ; the turning part of the crane is rotating.
Gear 24 being in constant engagement with the gear 26 , when it rotates, it also rotates, and since the gear wheel 24 has a keyed connection with the shaft 30 , rotates with it and the shaft. Further, the rotation is transmitted by means of an equalizing clutch to the shaft 31 , bevel gear 45 - 46 and shaft 55 travel gear boxes.
Gears 4 And 48 rotate freely on the shaft 55 . They are alternately switched on by means of a cam clutch. 49 . Depending on which gear is turned on by the clutch, the shaft speed changes. 53 , and hence the speed of the crane.
Gear 51 intermediate shaft is in constant engagement with the gear 50 output shaft 54 , which with the help of cardan shafts 41 And 52 drives the front and rear axles.
The front and rear axles of the crane include differential devices that allow the right and left wheels to rotate at different speeds, which is very important when the crane moves along curved sections of the track.
input gear 40 the main gear is in constant engagement with the gear 42 sitting on the splines of the intermediate shaft. From the intermediate shaft of the main gear, rotation is transmitted through gears 38 And 39 on the differential case and through satellites (gears) 3 and sun gear 2 - on the axle shaft of the crane wheels.

On the KS-4361 crane with a single-motor drive, when considering the kinematic diagram of its mechanisms, the concepts of the winch of the main and auxiliary lifting are not fully applicable, since the layout of the mechanisms with a single-motor drive does not allow one or another winch to be clearly distinguished; many elements of the kinematic chain of mechanisms are gears for a number of executive bodies. Therefore, on this crane, only the design of mechanisms directly connected with the executive bodies - drums is considered.


Multi-drum winch	Belt brake for cargo and clamshell drums	Adjustable boom drum brake

On a common shaft 6 three drums were mounted: cargo 3 , auxiliary (grab) 18 and boom 5 . All three drums have a ball bearing fit and rotate freely on the shaft. The drums are switched on with the help of pneumochamber clutches 1 , 7 And 14 , rigidly connected to the shaft, and are kept from free rotation or from rotation under the action of loads (loaded ropes) using band brakes.
The shaft rotates in double-row spherical bearings 2 And 10 and is driven by an asterisk 9 or gear wheel 11 with ball bearing support. The wheel is driven by a pneumatic clutch 12 . Shaft reversal is carried out by turning on the chain transmission using a pneumochamber clutch 19 mounted on a reversing shaft, or by turning on a gear wheel 11 .
The principle of operation of the pneumatic chamber clutch is based on the friction of the tire against the surface of the drum pulley under the action of compressed air. Clutch type according to the nature of the connection - friction; according to the nature of work and main purpose - to the class of controlled and coupling clutches, which allow opening and closing the connections of the part.
The clutch consists of a pulley 17 , pneumatic chambers 16 and tires 15 . Air is supplied to the pneumatic chambers through rotating swivel joints from the ends of the shaft 6 (through the channels in it) and from the shaft to the chambers (through flexible hoses). When compressed air is supplied through a hose 5 into the chamber, the latter expands and presses the friction band with a tire 15 to the inner surface of the drum pulley 3 .
The brake band adjoins the outer surface of the drum pulley. Ribbon 3 consists of two parts connected by a coupling bolt 1 . One end of the tape is hinged with a finger on the scarf, the other end is connected to the eye 12 . The lug is connected to the rod by means of a system of levers 7 hydraulic cylinder 6 . Hydraulic brake control. When you press the foot on the pedal of the hydraulic cylinder, the piston moves to the left and through the rod 7 and fork 9 turns the lever 11 . At the same time, the eye 12 moves up and the brake is applied (drum braked). If you take your foot off the pedal, the piston of the hydraulic cylinder under the action of the spring 8 will return to its original position (the drum will be disengaged). For uniform departure of the brake band from the drum pulley, a spring is used. 2 .
A brake of a similar design is installed on the clamshell (auxiliary) drum.
Two band brakes are installed on the boom drum: permanently closed and adjustable.
Eye 19 permanently closed brake mounted on a bracket 18 ; the running end of the brake band is tensioned by a spring 4 . A ratchet wheel is installed on the drum 16 ; with the help of a dog 15 the drum is kept from rotating. If it is necessary to lower the boom, the pawl is disengaged from the ratchet wheel using a pull 1 , lever 2 and pneumatic chambers 3 . The stroke of the pneumatic chamber rod is limited by an adjustable (screw) stop 17 .
The band of the controlled brake, as well as the band of the brake of a cargo winch, consists of two parts connected by a coupling bolt. Uniform withdrawal of the tape from the drum is regulated by a brace spring 6 . Brake eye mounted on a bracket 10 using a roller, on which a lever is also installed 12 , connected at one end to the eye of the brake band 14 , others - with a pneumatic chamber rod 9 .
The tension of the brake band (braking of the boom drum) is carried out by the spring 8 through the rod 13, the release of the band is carried out with the help of a pneumatic chamber.
The main and auxiliary winches of jib cranes are equipped with special devices - rope layers. They ensure the correct laying of the rope in the grooves of the drum and prevent it from coming off the drum.


Swing mechanism and slewing device	Front axle	Transmission

Swing mechanism it is put in action from the general engine of all mechanisms of the crane. bevel gear 27 the reverse mechanism of rotation and movement of the crane is in constant engagement with bevel gears sitting on the reversing shaft. Vertical shaft loads 14 are supported at the top by a deep groove ball bearing and at the bottom by a thrust ball bearing and a double-row spherical roller bearing. At the lower end of the vertical shaft, a gear is firmly planted 15 , which engages with the gear 8 , freely seated on a vertical shaft 12 . on the shaft 12 besides the gear 8 placed brake pulley 13 , gear clutch 10 and gear 23 ; they are all rigidly connected to the shaft. During shaft rotation 14 and with the clutch off 10 the gear wheel rotates freely on the shaft 12 and transfers the rotation to the gear 7 , rigidly sitting on the shaft 5 . Together with gear 7 the vertical shaft rotates and thus the power is transferred to the movement mechanism.
When the clutch is turned on 10 the shaft comes into rotation 12 and gear 23 begins to run around the ring gear 22 ; the turntable begins to rotate relative to the central shaft 5 . The ring gear has internal gearing.
As can be seen from the diagram, the platform rotation gearbox simultaneously plays the role of a crane movement gearbox.
outer rings 17 , 19 connected not to the frame of the undercarriage, but to the turntable; inner ring 22 connected to the fixed frame of the undercarriage. Thus, the inner ring is fixed, it plays the role of the base of the turntable.

Front axle crane KS-4361 - controlled, leading; its suspension to the frame is balanced, which improves the adhesion of the wheels to the base on rough roads. Power transmission from the cardan shaft by semi-axes 12 on the front axle it is also carried out by a cylindrical main gear, as well as on the rear axle. The inner wheels are mounted on the hub 6 , which is seated with the help of tapered bearings on a trunnion, reinforced in the body 17 . With flange 5 hub 6 connected to the axle 4 . The outer wheels are mounted on the hub 2 , which is mounted on the hub with the help of plain bearings 6 ; thus, the outer wheels are not driven, as they have a loose fit.
When the decrease in traffic begins to affect the performance of the crane, the outer wheels are blocked with special inner leashes. 18 mounted on flanges 5 so that the protrusion of the leash falls between the stops of the wheel rim. The leash is fixed with a bolt 19 .
Lower case arms 17 connected to each other by transverse 14 steering trapezoid. The upper levers of the housings are connected to the rods of the turning hydraulic cylinders, which are mounted on the bracket of the axle housing.
Rotation of the driving wheels from the axle shaft 12 to the semi-axis 4 transmitted through articulations 15 And 16 .
rear axle crane KS-4361 - leading. The bridge is of an automobile type, its suspension to the frame is rigid. It uses assembly units of the KrAZ vehicle, including the main gear with differential, axle shafts and brakes. Fastening of running wheels - diskless; it is carried out by clamps and rings.
The main gear of the rear axle is cylindrical. The bevel gear is used to connect intersecting shafts and control movement.

On the crane KS-4361 between the engine and transmission, instead of the main clutch of the friction type, a special hydraulic device is installed - a torque converter TRK-325 .
The torque converter provides stepless control of the speed of lifting and lowering the load, reversing the direction of movement, lifting small loads with increased speed, changing the speed of movement depending on the resistance to movement.

Scheme of the torque converter TRK-325

The torque converter TRK-325 includes a housing in which the pumping station is located coaxially. 1 , turbine 2 and guide 3 (reactor) wheels. The reactor is rigidly connected to the body. The driving pump wheel receives the movement from the shaft 4 engine, and the turbine (driven) is connected to the driven shaft.
Radiator 5 serves to cool the working fluid passed through it using a gear pump 6 . The transformer is provided with a bypass valve, filter and hydraulic tank 7 , as well as an overrunning clutch. At the same frequency of rotation of the turbine and pump wheels, the clutch connecting the shafts is switched on 4 And 8 .
Turn off the torque converter by removing fluid from the system. on the shaft 8 a brake controlled by the driver can be installed. To direct the movement of fluid in the system, a pneumatic pusher, spool, ejector and diffuser are used.

IN pneumatic control system The KS-4361 jib crane includes the following elements: a compressor, a refrigerator and an oil and moisture separator, a receiver, a control panel with a pneumatic distributor, pipelines and pneumatic chambers mounted on the crane actuators.

Schematic diagram of the pneumatic control of the crane KS-4361

The air is pre-compressed in the first stage of the compressor 13 , passes through the cooler and oil and moisture separator and is compressed in stage II to 0.6 - 0.7 MPa from where it enters the receiver 16 and further through the pipeline 17 to the control panel 3 .
In the oil and moisture separator, the air is cleaned of moisture and oil, and then enters the second stage of the compressor.
From the control panel, air through pipelines and special rotating joints 10 goes to pneumatic chamber couplings 7 crane mechanisms.
When each mechanism is turned off, the air from the pneumatic chamber couplings is released into the atmosphere. Special valves are installed in the turbotransformer systems, pneumochamber and brake clutches of the boom drum and the crane movement mechanism for quick braking of the crane mechanisms. 8 .
For smooth rotation of the platform in the systems of the reversing mechanism and the rotation brake, as well as the movement mechanism, flow regulators are used. 18 .
They control the crane mechanisms from the remote control with special devices - spools (valves). There are two types of spools: differential and direct acting. Differential spools are used for those crane mechanisms that require regulation of external forces when they are turned on. Such mechanisms are mechanisms with friction clutches used in cranes with a single-engine drive - an internal combustion engine. For mechanisms that do not require a change in pressure in the system, direct-acting spools are used.

Crane control cabin with single-engine drive KS-4361

electrical equipment crane KS-4361 is used to power indoor and outdoor lighting, light and sound alarms, load limiter; provides start of the starting engine, heating and ventilation of the control cabin, heating of the diesel engine.
The source of direct current is the G-66 generator, which is also designed to charge the 6ST-42 battery. The generator is driven by a diesel engine through a gear train.
To regulate the voltage and protect the generator, a relay-regulator is provided, consisting of a voltage relay, a current limiter and a reverse current relay (prevents the battery from discharging to the generator when the diesel engine is not running). Fuses are used for short circuit protection.
The electrical network of the crane during the period of diesel stops is powered by a battery, which is also used to start the starting engine with an electric starter. The value of the charging and discharging current of the battery is determined using an ammeter.
The electrical system of the crane includes a set of converters installed on the engine, the oil tank of the turbo-transformer and the compressor. These converters make it possible to control the temperature of diesel water and oil, the oil temperature in the turbo-transformer, and the oil pressure in the diesel and compressor systems through appropriate instruments.
The limit positions of the boom are fixed by a limit switch, which acts on the electromagnet circuit. The latter controls the spool, which, when the boom reaches the end position and the switch is activated, turns off the turbo-transformer and turns on the winch brake. The magnet is powered by a running diesel through a relay.
The electrical circuit has a control button that allows you to bypass the limit switch and return the boom to its working position, as well as turn on the load limiter when it is triggered.
A button is mounted on the control panel to turn on the sound signal. A portable repair lighting lamp is switched on through a power outlet.

For load limits crane and automatic shutdown of the cargo winch, an electric load limiter OGP-1 was used.
When the crane is operating at minimum boom outreach, a stop with flexible elements is used to avoid tipping it onto the turntable.

Rope traction 2 passes through deflecting rollers 1 on the boom 4 and fixed on the platform. Springs 3 support the rope and prevent it from sagging. When the boom reaches the limit angle of inclination (towards the turntable), the rope is stretched and keeps the boom from further movement.

Lifting equipment are special machines that are subject to special requirements in terms of their technical capabilities and ensuring the safety of the operating and operating personnel. This article will discuss a unit called the pneumatic wheel crane KS-4361 A. Such attention is riveted to it for a number of reasons, because its long-term service has shown how effective it is in the process of loading and unloading, construction, installation and some other types of work.

general information

KS-4361 A is not just a crane, but, in fact, a whole range of lifting devices created on pneumatic wheels, capable of working with a weight of up to 16 tons. The cranes of this series were produced until very recently, starting in the 1970s. At the same time, more than 16,000 units of this equipment were created over the entire period of production. As practice has shown, the machine has proven itself ideally both in temperate climates and in the most northern and harsh regions, where the ambient temperature sometimes drops below -60 degrees Celsius.

Existing modifications

The crane KS-4361A, the characteristics of which will be given below, is based on the models K-161 and K-161C, produced for the temperate and polar climatic zones.

KS-4361C is a model for the northern regions where the ambient temperature can reach -60 °C. The metal structures of this machine are made of low-alloy steel, and the tires and sealing elements are made of frost-resistant rubber.

KS-4361AT is a machine specially designed for operation in the tropical zone.

KS-4362 - diesel-electric crane.

Options

The crane KS-4361A, the technical characteristics of which are relevant to this day, is endowed with the following indicators:

Lifting capacity on supports at maximum outreach - 3.75 tons.
Load-carrying capacity on supports at the minimum departure of an arrow - 16 tons.
The maximum reach of the hook suspension is 10 meters.
The minimum hook reach is 3.75 meters.
Lifting speed of the main lift -10 m/min.
Load lowering speed - from 0 to 10 m/min.
The frequency of rotation of the rotating platform is 0.5-2.8 rpm.
Self-propelled crane travel speed - 15 km/h.
The minimum turning radius on the outer wheel is 12.2 m.
The maximum permissible angle of elevation of the path to be overcome is 15 degrees.
The track of the front and rear wheels is 2.4 m.
The total weight of the crane is 2.37 tons.
Carrying capacity of the car during the movement - 9 tons.
The length of the main boom of the crane is 10 meters.
The capacity of the grab attached if necessary is 1.5 cubic meters. m.
The length of the crane is 14.5 meters.
Width - 3.15 meters.
Height - 3.9 meters.

A few words about the scheme of the machine

The characteristics of the KS-4361A crane will, of course, be incomplete if you do not provide a description of its device. At the heart of the unit is a welded metal frame with a pair of bridges, both of which are driven. The front axle is mounted on a balancing support, and this, in turn, allows you to increase the grip of the wheels with the underlying surface. The wheel alignment angle is changed by hydraulic cylinders. The rear axle is equipped with a rigid suspension. In the center of the frame is a two-speed manual gearbox. Torque is transmitted to the axles through cardan shafts. Axle gearboxes are equipped with both bevel and cylindrical gears.

Side frames KS-4361A are equipped with outriggers with screw jacks. The installation and folding of these units occurs through the use of the hydraulic system of the crane. In general, the supports can significantly increase the stability of the entire machine and its load capacity. On top of the frame there is a turntable with the main working units of the crane. The connection of the frame with the platform is carried out using a two-row ball shoulder strap with a ring gear.

Each of the crane bridges has differential devices that allow the right and left wheels to rotate at different angular speeds.

Power point

The crane KS-4361A is equipped with a four-cylinder diesel engine with a power of 75 horsepower. The name of the motor is SMD-14A. The crankshaft of the power plant is coupled through an elastic coupling with a turbotransformer, which, in turn, makes it possible in a certain range of operating speeds of the entire crane. The compressor of the pneumatic system is mounted independently of the motor. The transmission of torque occurs with the help of a V-belt transmission. The compressor is cooled by a special fan.

Detailing

Crane KS-4361A has gear and cam clutches equipped with a hydraulic drive. Lifting units are driven by a combined system that includes both pneumatics and hydraulics. Winches start their work due to pneumochamber clutches, the reverse drive works in the same way. Stopping the rotation of the drums and rigid fixation in a given position is possible due to the presence of band brakes.

A characteristic feature of the crane is that the boom drive drums, load hook and grab are mounted on the same shaft.

The electrical equipment of the lifting machine is used to provide external and internal lighting, turn on and off sound and light alarms, activate limit switches, start the engine, heat and ventilate.

Swivel mechanism

It should be noted that the rotary mechanism is powered by the same engine as the rest of the components and parts of the entire crane. Bevel gears are fixed on the reverse shaft, which, in turn, engages the gear wheel of the reverse rotation mechanism.

A ball bearing is mounted on top of the vertical shaft, perceiving a radial load, and on the bottom - thrust and spherical double-row ball bearings.

The rotation of the crane turntable occurs at the moment when the gear runs around the ring gear with internal gearing.

Operator Safety and Workplace

The crane operator's console is located directly in the crane cab. The user activates the necessary mechanisms with the help of levers and handles. To provide the required level of protection for the driver, the machine uses a boom lift limit switch, a load limiter and a boom reach indicator.

Subtleties of operation

Absolutely any KS-4361A crane, where it is not difficult for everyone to find the frame number, is a rather dangerous machine during use and transportation. Therefore, the unit must be transported by road using a towing tractor at a speed of no more than 20 km/h. In the process of towing on a crane, it is imperative to turn on a neutral gear, remove the cardan shaft on one of the bridges and turn off the turn cylinders. If the process of transportation of KS-4361A is planned by rail, then in this case the crane should be disassembled into separate large components and parts. To do this, the pneumatic running wheels are dismantled, the boom is certainly removed, disassembling it into sections. The transportation itself is carried out on a four-axle platform.

Within the boundaries of the construction site and for short distances (up to 50 kilometers), the crane can also move on its own, both with the boom in the transport position and with a fixed load. In this case, the driving speed should be no more than 3 km / h. The working boom is always located along the longitudinal axis of the machine.

Overall dimensions of the pneumatic wheel crane KS-4361

Technical characteristics of the crane KS-4361

load capacity, T:
. on supports:
..	16
..	3,75
. without supports:
.. with the smallest hook reach	9
.. at maximum hook reach	2,5
hook flight, m:
.. smallest	3,75
.. largest	10
hook lifting height, m:
.. with the smallest hook reach	8,8
.. at maximum hook reach	4
Speeds:
.. lifting the main hook, m/min	10
.. lowering, m/min	0 - 10
.. turntable rotation frequency, rpm	0,5 - 2,8
.. self-propelled crane movement, km/h	3; 15
213
150
The smallest turning radius (along the outer wheel), m	12,2
The greatest angle of elevation of the path, hail	15
Engine:
.. brand	SMD-14A
.. power, hp	75
wheel track, m:
.. front	2,4
.. rear	2,4
crane weight, T	23,7
including counterweight, T	---

Lifting capacity when driving and climbing angle on the road in transport position

* - The lifting capacity is indicated with the boom located along the axis of the crane.
** - In the denominator - the permissible angle of inclination of the crane when working on outriggers.

Characteristics of the main and replaceable boom equipment of the crane KS-4361


Swing mechanism and slewing device	Front axle	Transmission

Scheme of the torque converter TRK-325

Schematic diagram of the pneumatic control of the crane KS-4361

Crane control cabin with single-engine drive KS-4361

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KS 4361A is a single-engine crane unit designed to perform operations related to the movement of goods in hard-to-reach conditions. This unit has gained recognition due to its endurance and ability to work off-road, muddy soil and in cramped conditions. The advantages of the KS 4361A are not only outstanding cross-country ability, but also tremendous opportunities in the construction and economic areas, as well as in search and rescue operations. The functions of this self-propelled machine have already been appreciated not only by developers in the course of successful tests, but also by real users, for whom stable and trouble-free operation for a long time is very important. This article presents the device, capabilities and characteristics of a self-propelled pneumatic wheel crane KS4361A.

Description and purpose

KS 4361A is a high-performance diesel crane with a torque converter. His duties include the movement of various goods over certain distances. The model under consideration finds its application in the professional field, including the installation of buildings and structures, as well as the transportation of bulky technical equipment in a horizontal or vertical position. At the same time, the manufacturer says that there are no serious restrictions on the weight, type and dimensions of the goods transported. Moreover, the technique is in demand in logistics centers and other large organizations where low-power manipulators need to be replaced. KS 4361A can also be used when pulling away rubble, and due to this, the truck crane is in deserved demand from the special services of the Ministry of Emergencies.

Technical and lifting characteristics

Load capacity - 16 t
Boom length - from 10 to 25 m
Boom lifting speed - from 20 to 50 m / min
Rotary speed of the rotary mechanism - from 0.4 to 2.8 rpm
Entry angle - 15 degrees
Load per wheel - from 3950 to 8350 kg depending on the load
Load on the front outriggers - 22340 kg
Load on the rear outriggers - 19040 kg
Maximum speed - 333.3 m / min
Turning radius - at least 12 m
Weight - 15 kgf / sq. m
Dimensions, mm: Length - 14500, Width 3800, Height - 3030.

Features of the device and operation

Truck crane installation KS-4361A is equipped with the following components: arrows, hook and grapple. These are moving parts with different length parameters. For example, interchangeable arrows are presented in the form of arrows with a length of 15, 20 and 25 meters. Together they represent one main boom, in addition to which there is a 6 m long jib. A tilt limiter is built into the boom onto the platform.
KS-4361A is a modernized version of the popular KS-4361 crane, which has received dramatic changes that are noticeable both from the technical and external sides. The driver's cab received an updated design, as well as the appearance of the entire body. For ease of operation, the crane uses a time-tested pneumohydraulic control system. The operating speed of the crane can be controlled using a turbo-transformer, which is powered by a hydraulic system.

The undercarriage of the crane includes outriggers with screw jacks, which have so-called shoes at the ends. The crane installation moves around the site under its own power at a speed of 3 km/h, including together with the hook. Note that when traveling long distances, a self-propelled vehicle moves on a hitch or tug connected to a tractor. This is due to the fact that, due to the large dimensions, the equipment is not allowed for public roads. During transportation, the speed of the tug is no more than 20 km/h, and when turning it is reduced to 3 km/h. When transported by rail, the crane is placed on a railway platform. Loading of the crane onto the platform is carried out with the help of another (cargo) crane capable of lifting 25 tons.

Please note that all the executive working bodies of the crane work at the expense of a turbotransformer. To take off the power transmitted from the engine to the compressor, it is made using a V-belt drive.

The common shaft includes three drums - boom, auxiliary and cargo, which rotate freely on the shaft due to ball bearing fit. In addition, the model KS4361A is equipped with a pneumatic chamber clutch with a friction connection. This type of connection allows you to open and close the connections of the part. The coupling includes a pulley, a tire and a pneumatic chamber.

Another structural element is the boom drum, on which band brakes are installed - a closed and adjustable brake. The design also includes a cylindrical final drive of the rear axle. The bevel gear is responsible for connecting the intersecting shafts and adjusting the movement. A vertical shaft with a gear is responsible for the power take-off in the gearbox. The gearbox itself is a two-stage, working due to the clutch.

Between the key parts of the crane installation - the engine and transmission - there is a torque converter that allows you to adjust the speed in a wide range, raise and lower the load, reverse the direction of the boom, and also change the speed of movement depending on the complexity and type of operation. Integrated into the torque converter housing are the pump, turbine and idler wheels, which are driven by engine torque transmitted through the gearbox. The control system includes a compressor, refrigeration equipment, oil and moisture separator, receiver, control panel, pneumatic chambers and pipelines.
The smoothness of rotation of the rotary mechanism is provided by the so-called flow regulators, and spools (valves) are used to control the mechanisms of the crane. So, depending on the type of task, a differential spool or a direct-acting spool is used.

The KS4361A truck crane is equipped with auxiliary elements that improve not only the functionality, but also the safety of the crane and the operator himself. In particular, let's pay attention to the complex of sensors and instruments that monitor the status of all working systems and organs of the self-propelled machine. In case of deviation from the norm of any of the indications (for example, when the oil pressure drops or overheats), the driver receives a sound signal about the malfunction. This will allow you to fix the problem in advance. Also, the truck crane is equipped with a protection system that is triggered when approaching power lines.

Prices

The average cost of a truck crane KS-4361 in the Russian market is 1 million rubles. The price is for a copy in a used condition.

Technical and lifting characteristics

Device

Transportation

general information

Existing modifications

Options

A few words about the scheme of the machine

Power point

Detailing

Swivel mechanism

Operator Safety and Workplace

Subtleties of operation

Description and purpose

Technical and lifting characteristics

Features of the device and operation

Prices

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