A quick-repair link and chain with adjustable length for railway wagons

Abstract

The invention discloses a quick-repair link and chain with adjustable length for railway wagons. The two ends of the connection part, the connection part and the two matching parts form a U-shaped structure, the adjustment seat, the two ends of the adjustment seat are provided with through holes, the two matching parts can be detachably penetrated in the through holes, thin nuts, thin nut threads Connected to the mating part, the thin nut is located on the side of the adjustment seat close to the connecting part. This device innovates the quick-repair link length adjustable technology, perfects the quick-repair link technology and function, and improves the repair efficiency of the handbrake chain. and quality, and can be adjusted in length, simple in structure, high in adjustment accuracy, quick in operation, easy to carry and operate in, detachable and reusable, suitable for various occasions, especially field operations, high in efficiency and economical in repairing chains Good, guaranteed quality.

Description

technical field [0001] The invention belongs to the technical field of railway freight cars, and more particularly relates to a quick-repair link and chain with adjustable length for railway freight cars. Background technique [0002] The railway freight car hand brake is a braking device set up to prevent the vehicle from slipping when the railway freight car is parked in the station yard. The handbrake chain is used in the handbrake device to transmit the handbrake force. It is often found that the handbrake chain link is broken in the use of the vehicle. After the chainring is broken, the handbrake chain at the broken place sags. Intrusion into the lower limit of the vehicle will adversely affect the driving safety of the vehicle. Existing main truck hand brake device action mode (such as figure 1 shown), the handbrake 1' is connected to the vehicle body 3' through the attachment, at the same time, the chain 7' on the handbrake 1' passes through the fixed pulley 2', the...

AI Technical Summary

Problems solved by technology

Since the hand brake and its chain are purchased parts, and the manufacturer must have production qualifications, due to manufacturing errors and other factors, it is difficult for the manufacturer to control the length of the hand brake chain, and the chain is welded by special equipment. Carry out a tension test on the chain. If the length of the chain of the hand brake is not suitable, the vehicle repair unit is not qualified and cannot adjust the length of the chain. Adjusting the size of accessories such as brake levers can also ensure the slack requirement. However, after adjusting the dimensions of accessories such as hand brake levers, the interchangeability is poor, which affects the efficiency of manufacturing and maintenance, and the economy is poor; due to the length of the car body chassis, The accumulative error of the size of the hand brake device accessories such as the hand brake mounting seat is too large, which leads to the problem that the chain is too short and the slack of the hand brake chain is not enough

[0004] If the slack of the hand brake chain of the railway freight car is too long, the hand brake chain of the adjacent railway freight car with a relatively small wheelbase may contact the axle, resulting in wear of the hand brake chain and the axle, which will affect the driving It is safe, and if the chain of the hand brake is too long, the chain will be involved in too many turns on the reel of the hand brake, which will not only affect the transmission efficiency of the hand brake, but also cause the hand brake to stick and cause poor relief. Traffic accidents etc.

[0005] At present, the existing rapid repair chain link technology for railway wagons has problems such as the length of the repair link cannot be adjusted, the process is complicated, and the manufacturing cost is high. The slack of the chain between the front brake lever and the hand brake lever is time-consuming and laborious, which affects the interchangeability and repair efficiency of accessories such as the hand brake lever, so there are problems such as low production efficiency and poor economy; Some existing railway wagons use the fast repair chain link technology to pass structures such as pins or bolts and nuts. Due to structural limitations, when the hand brake chain is under tension, the existing railway wagons use the fast repair link technology to pass through the pins or bolts. Bolts are easily damaged and broken by shear force, which affects driving safety. Therefore, it is expected to develop a quick repair link technology with adjustable length for railway wagons

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