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Automatic coupling device malfunction

In the operation of the nodes automatic coupling devices of cars having different wear and damage to individual parts. All defects must be identified and corrected in a timely manner, so as to route any of them could be the cause samorastsepa pulling faces, broken trains, falling parts on the track.

Automatic coupling device inspection should begin arriving by train at the meeting with the move, as clearly visible on the move cars with different height axes coupler centers, with increasing distance from the stop to the socket coupler, with a tight chain rastsepnogo drive. After stopping the train automatic coupler device inspected in the following order: check if there are cracks in the housing coupler, position rastsepnogo drive, centering device, roller lift, and the availability and condition of the warning process and guide tooth lock, acting through existing for him, as for signaling process, a special hole in the pocket of the head coupler.

After that, check the distance between the stop and the shock socket coupler, coupler shank and ceiling impact sockets, the difference in center height above the rail head coupler centers. State traction clamp-absorbing device, hard plates, support plates and roller or wedge clamp it appears when viewed from prolazkoy.

The fracture traction straps, traction wedge clamp, hard plate body absorbing apparatus, its springs or through bolt indicates increased or decreased distance from lock coupler to the shock cord, and the bolts that support the wedge, have a bend, and the bolt closest to the end carriages car frame is bent more than the other. On the shoulder of the wedge in this case, there is a brilliant Namin, and on the towing yoke coarse metal powders. If the broken wedge lift crowbar and sharply lower, audible double blow.

Plate has a broken hard as it bent form when the composition is extended, and if it is compressed, a visible dent in a crescent at the point of junction with push-absorbing cone machine, and the pressure cone is oval edge.

The cracks in the housing coupler usually occur in places of transition from the head to the shank, in the corners of the shock surface pharynx and in the liner in the oval hole for the wedge. Cracks in the coupler, pulling clamp, wedge clamp and pulling hard slab often lead to their fracture and breakage as a result train. Therefore, the detection of cracks in the details and automatic coupling devices for engineering service is given special attention. Typical signs of cracks in components and parts of cars are automatic coupling device corrosion, no frost in the winter, and in summer the dust roller.

The distance between the shock and flow outlet housing in cars with automatic couplers draft gear type CRI-H6 should be maintained within the 60-100 mm. Spring break is not allowed absorbing apparatus. On examination, rubber absorbing device of the type P-2P checked condition of the hull, nazhymnoy and guide plates and rubber elements. Cracks and breaks in the case, the guide and the pressure plate are not allowed. Rubber elements must not have cuts or other damage rubber. May be detached from the edges of rubber reinforcement around the perimeter to a depth of no more than 50 mm.

Faulty device or absorbing clamp traction determined by external features. For example, a band with a metallic sheen of at least 100 mm of contact with the traction clamp with support plates on one side or on both sides is a sign of cracks, breaks, splits absorbing apparatus, spring break. In normal output coupler metallic sheen on the shank coupler as a band size of 20-50 mm, reaching almost to the head, indicating no faulty traction clamp.

If the collar is visible band with a bright metallic luster longer than 100 mm, podplanki coming out, but no metal dust, then there is a fault of the absorbing system. A faulty traction clamp indicates output coupler heads of more than 100 mm from the shock cord. Coupler output by at least 60 mm from the wall outlet and the presence of a shock strip light emanating from the support plates by more than 100 mm, usually indicate a problem with the absorbing apparatus.

However, in all cases, the external fault conditions should be clarified, and further examination. In this case, the fault of the absorbing device may indicate development on its supporting bracket.

The most common consequence of various faults in the automatic coupling device is samorastsep automatic coupling, can be due to the following error:

- a bend or kink the fuse from samorastsepa and counterweight or paws zamkoderzhatelya;

- decay zamkoderzhatelya with tongue and thus jamming the lock, break the lock stud for mounting fuse on samorastsepa;

- break jumper slots in the castle for the low side of the fuse samorastsepa;

- zapadanie lift oval cutout in the lock, so that lost its mobility;

- hungry castle;

- bending process lock signal, resulting in process does not pass freely through the hole in the bottom of his pocket housing coupler;

- wear traction and shock surfaces of large and small teeth;

- broadening of the throat;

- falling out roller lift or sticking it in turn;

- curvature of the holder or rastsepnogo lever;

- broken or fractured fixing bolts holder arm lever;

- short or long chain rastsepnogo drive.

A short circuit in the nomination due to the compression coupler draft gear, as well as significant lateral deviations housing coupler on curves stretches of stretches and rotates the lift shaft, from what happens off guard by samorastsepa. Long chain can also create conditions for samorastsepa pulling faces as a careless inspection car can be sent with a lever located in rastsepnom position. In this case, or incomplete coupling or, as in a short circuit, the fuse off from samorastsepa.

The reason may be samorastsepa hit the lock of foreign objects, and in the winter accumulation at the bottom of the pocket coupler snow or ice due to the fact that when the clutch lock will not fully return to its lowest position and the fuse of samorastsepa turns off.

Another reason - the excess of allowable height difference between the longitudinal axes of the coupler, which leads to samorastsepu when following trains on sections with subsidence, or the deep, and the descent of cars with hump hump.

In operation there are cases when to eliminate excess of allowable height difference between the longitudinal axes of the cars pulling faces do not change places, and the suspended inverted (put a wide head down) or enclose a shock socket under the head of pendulum suspension and centering ravine below the reference plane shank foreign objects : bolts, Puteisky crutches, rail pads, etc. It is unacceptable not only because it could be lost in the way of these parts of the train, but that is especially dangerous misalignment is pulling faces and premature wear, and a quick automatic coupler with any part of the unit.

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