Railway vehicle parking brake device capable of automatically stopping and manually stopping

Abstract

The invention relates to the technical field of railway vehicle parking braking, and in particular relates to a railway vehicle parking brake device capable of automatically stopping and manually stopping. The device comprises a wind pressure mechanism, a hydraulic mechanism, a control mechanism and an actuating mechanism. The wind pressure mechanism comprises a parking brake cylinder, a parking air cylinder, a local pressure reducing valve and a shutoff valve, and an air path from the parking air cylinder to the local pressure reducing valve and the parking brake cylinder is connected or disconnected through the shutoff valve; reciprocating motion of a piston in the parking brake cylinder is controlled through reciprocating motion of a piston in the local pressure reducing valve, all parts of an original basic brake device of a vehicle are driven to act through the actuating mechanism, and automatic parking brake and automatic parking release of the vehicle are achieved; during manualaction, the control mechanism is manually operated, so that the hydraulic mechanism controls the reciprocating motion of the piston in the parking brake cylinder to drive the actuating mechanism to work and further drive all parts of the original basic brake device of the vehicle to work, and manual parking brake and manual parking release of the vehicle are realized.

Description

technical field [0001] The invention relates to the technical field of parking brakes for railway vehicles, in particular to a parking brake device for railway vehicles that can stop automatically and manually. Background technique [0002] The parking brake of railway vehicles refers to the stopping method adopted when the vehicle is at rest without wind pressure, and its purpose is to prevent the vehicle from slipping by itself. [0003] The trains running on the railway are connected in series by the locomotive in front and the connected vehicles in the rear. The whole train adopts pressure air to drive the action of the mechanical device to decelerate, brake and stop. Because the vehicle attached to the rear has no pressure air source, it is necessary to rely on the locomotive at the front to fill the secondary air cylinders of each vehicle at the rear with compressed air in turn through the air duct, so that the rear vehicle can generate braking force. After the locom...

AI Technical Summary

Problems solved by technology

[0017] The technical problems to be solved by the present invention: 1. The air brake of the existing vehicle is naturally leaked due to the pressure air, which causes the vehicle to lose the braking force and automatically rolls the car; 2. The existing vehicle braking method has low efficiency and high safety hazards 1. The problem of occupying more human resources; 3. If the existing vehicles adopt the mechanical parking brake device on the locomotive, the braking force is weak, and the braking and relief operations cannot be manually performed repeatedly under the condition of no wind pressure. The method is cumbersome and restricted by air filling, the structure is complicated and the cost is high, and the problems of automatic wheel locking and inconvenient maintenance are prone to occur during operation

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