Derailment automatic braking apparatus of railway wagon

Abstract

The invention claims a derailment automatic braking apparatus of a railway wagon. The derailment automatic braking apparatus comprises a baking valve rod, an actuating rod, a valve body, an annular spring leaf, a locking nut, a top beam assembly and a pulling ring. The actuating rod is mounted in a longitudinal inner aperture of the valve body and located by the annular spring leaf and the locking nut. The baking valve rod is mounted in a top side aperture of the actuating rod. The top beam assembly comprises an adjusting rod, a top beam and a limiting cylinder. The pulling ring is connected to two ends of the top beam by the limiting cylinder. The middle part of the top beam is connected with the lower end of the adjusting rod. An axial through hole of the actuating rod is provided with an inner sleeve which is limited axially. The upper end of the adjusting rod is stretched into the inner sleeve and matched with the inner sleeve by screw thread. When the inner sleeve rotates, the adjusting rod is driven to move axially so that the gap between the pulling ring, the top beam and a wagon axle is adjusted conveniently. Furthermore, the top beam assembly is divided into three specifications according to the difference of the side aperture opening direction of the limiting cylinder, corresponding to three different specifications of the pulling rings. The derailment automatic braking apparatus has the advantages of good installation adaptability, error installation prevention, convenient adjustment, safe and reliable application, and sensitive and rapid actuation.

Description

technical field [0001] The invention relates to an emergency braking device for railway freight cars, in particular to an automatic braking device for derailment of railway freight cars. Background technique [0002] At present, most of the newly built railway freight cars in China are equipped with derailment automatic braking devices, which are used to detect vehicle derailment signals in a timely and accurate manner, and automatically trigger trains to generate emergency braking, thereby reducing train derailment losses and avoiding further expansion of train derailment accidents. It plays an important role in ensuring the safety of railway transportation. [0003] The derailment automatic braking device that has been loaded is mainly composed of brake valve rod, action rod, valve body, ring shrapnel, lock nut, top beam and pull ring. The action rod is installed in the valve body and passes through the valve body. The ring shrapnel and the lock nut are relatively positio...

AI Technical Summary

Problems solved by technology

[0004] However, after the above-mentioned derailment automatic braking device was used on a railway freight car for a period of time, the following defects were exposed:

In the existing derailment automatic braking device, the surface of the key components such as the brake valve rod, action rod, adjustment rod and lock nut is only treated with ordinary galvanized layer, and the ordinary galvanized layer is difficult to meet the long-term requirements of railway freight cars in Japan. The anti-corrosion requirements in the harsh environment of exposure to the sun and rain will shorten the maintenance and repair cycle and reduce the service life

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