Parking brake module for rail vehicle, brake cylinder and brake clamp unit

Abstract

The invention discloses a parking brake module for a rail vehicle, a brake cylinder and a brake clamp unit. The parking brake module comprises a parking cylinder; a first parking piston is arranged in the parking cylinder; a hand brake mechanism is arranged in the parking cylinder, and comprises a parking rod, a rotating wheel and a parking pin; the first parking piston is fixedly connected with the parking rod; a chute is formed in the parking rod; a slide piece clamped on the parking rod is arranged on the inner wall of the rotating wheel corresponding to the chute; and the slide piece is matched with the chute to prevent the parking rod from moving in the radial direction. As the parking rod and the rotating wheel in the parking brake module adopt a buckling fixation mode, when the parking braking is performed, the rotating wheel and the parking pin cannot slide in the parking braking process to effectively prevent wear of the parking pin.

Description

technical field [0001] The invention relates to the technical field of rail vehicle braking, in particular to a parking brake module, a brake cylinder and a brake caliper unit for rail vehicles. Background technique [0002] Most of the braking devices used in rail transit vehicles use compressed air as the source of power, and the compressed air is usually converted into mechanical thrust through the brake cylinder. In recent years, due to the need for parking braking of motor vehicles and subway vehicles, a spring energy storage structure has been added to the braking device. When the vehicle is in a windless state, the spring force stored when there is wind is converted into mechanical thrust. The braking device mainly has two main forms: unit brake (tread brake module) and brake caliper unit. [0003] The brake caliper unit is divided into two types with parking function and without parking function. Traditional brake devices mostly adopt modular design, and the entire...

AI Technical Summary

Problems solved by technology

[0005] Although the energy-storage parking unit brake cylinder of the above structure has the advantages of compact structure and small space occupation, when the brake cylinder is manually parked and relieved, the ring gear and the hand brake sleeve are fixedly connected, and the pull The pin can be inserted into the tooth groove of the ring gear. During operation, the ring gear and the manual sleeve move in a straight line synchronously. At this time, if the pull pin is pulled accurately, there will be slippage between the ring gear and the pull pin, resulting in a The wear and tear of the pull pin increases the movement resistance of the manual sleeve and prolongs the time for the manual parking and relief operation

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