Primary spring load adjustment method in rail vehicle servicing state

Abstract

The invention discloses a primary spring load adjustment method in the rail vehicle servicing state. By means of a hydraulic adjusting device and a limiting cushion block, adjustment on a primary bearing steel spring in the vehicle servicing state is achieved, the hydraulic adjustment device comprises a separating manual double acting hydraulic jack, a high strength draw-in bolt and a bearing plate. The high strength draw-in bolt is connected with a bogie spring base, the acting force of the hydraulic jack is transmitted in the servicing state to press a primary spring to make a primary spring base separated from an axle box to form a gap, and an adjusting gasket is additionally arranged between a bogie swiveling jib and the primary spring base; primary spring load distribution is changed. According to the primary spring load adjustment method in the rail vehicle servicing state, compared with other adjustment methods in the prior art, operation of separating connection of a bogie and a vehicle body is avoided, the production efficiency is improved, and the manufacturing efficiency is greatly improved. Accordingly, operation is conducted conveniently, applied equipment is simple, the adjustment effect is good, and very high practicability and applicability are achieved.

Description

technical field [0001] The invention relates to a method for adjusting the load of a tie spring, in particular to a method for adjusting the load of a tie spring in a state of maintenance of a rail vehicle. Background technique [0002] According to the requirements of GB / T 14894-2005 "Inspection and Experiment Rules for Urban Rail Vehicles after Assembly": the difference between the measured axle load and the actual average axle load of each moving axle of the car should not exceed 2% of the average axle load; each The difference between the actual wheel weight of the wheel and the average wheel weight of the two wheels of the axle shall not exceed ±4% of the average wheel weight of the two wheels of the axle. [0003] The wheel (axle) weight of a rail vehicle is so important because the deviation of the (axle) weight of a rail vehicle is one of the important factors affecting the vehicle's adhesive traction ability. The greater the axle load deviation, the more pronounced...

AI Technical Summary

Problems solved by technology

[0006] When adjusting the primary shaft spring, it is necessary to add an adjusting gasket under the spring seat. When the vehicle is completed, the spring has already borne the weight of the vehicle, and the bearing pressure is about 5t. After the completion, the structure between the bogie and the vehicle body is compact, and the working space It is very narrow, so it is very difficult to manually adjust the wheel weight difference by adding or removing spacers under the spring seat

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