Brake cylinder with parking function for railway vehicle
A technology for rail vehicles and brake cylinders, which is applied to brake actuators, gear transmission mechanisms, mechanical equipment, etc., and can solve problems such as low reliability, many brake cylinder parts, and complex internal structures.
Inactive Publication Date: 2016-07-27
CRRC CHANGZHOU TECH MARK IND CO LTD +1
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Problems solved by technology
The brake cylinder with this structure has many parts, the internal structure is more complicated, the reliability is lower, and the installation, debugging and maintenance are also relatively cumbersome.
Method used
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[0018] See figure 1 As shown, the brake cylinder with parking function for rail vehicles of the present invention includes a cylinder body 2, a diaphragm chamber assembly 4, a piston shaft 6 and a piston 5, and the front end of the cylinder body 2 is sealed with a front cylinder cover 13 and a rear end seal. Connected to the rear cylinder head 1, one end of the piston shaft 6 is sealed and connected to the front cylinder head 13, the diaphragm chamber assembly 4 is sealed and installed on the rear cylinder head 1, the piston 5 is sealed and sleeved on the piston shaft 6, and the piston 5 is crimped There is a piston bushing 8, and a sealing ring is installed between the piston bushing 8 and the piston shaft 6, so that the piston 5 and the piston shaft 6 can move relatively and have good sealing performance, and the piston 5 and the cylinder body 2 are sealed and connected , The piston sealing ring 7 is arranged in the sealing groove of the piston 5 to achieve sealing with the ...
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The invention relates to a brake cylinder for a railway vehicle. The brake cylinder comprises a cylinder body, a diaphragm plate chamber module, a piston shaft and a piston; the front and back ends of the cylinder body are tightly connected with a front cylinder cover and a back cylinder cover; one end of the piston shaft is tightly connected to the front cylinder cover; the diaphragm plate chamber module is tightly mounted on the back cylinder cover; the piston tightly coats the piston shaft, and is tightly connected with the cylinder body; a stop base is arranged on the piston shaft; the other end of the piston shaft is coated with a spring base; the spring base is opposite to a pushing part of the diaphragm plate chamber module; the two ends of a piston shaft return spring coating the piston shaft are respectively butted against the piston and the spring base; a parking brake spring is arranged on the outer side of the diaphragm plate chamber module; two ends of the parking brake spring are respectively butted against the cylinder body and the piston; an air joint is arranged on the back cylinder cover; and an air hole of the air joint is communicated with a diaphragm plate air chamber of the diaphragm plate chamber module. The brake cylinder integrates driving braking with parking braking in one cylinder body, and is fewer in parts, simple in structure, high in reliability and convenient for debugging and maintenance.
Description
technical field [0001] The invention relates to a brake cylinder with a parking function for rail vehicles, belonging to the technical field of rail vehicle foundation braking devices. Background technique [0002] The basic braking device is a key component of rail transit, and the braking force is applied through the basic braking device to make the train stop within a specified distance. When the train brakes, under normal conditions, the common brake cylinder is filled with compressed air to provide braking force for the brake caliper to achieve service braking; when there is no air source, the parking brake cylinder is released The pressure gas inside is released by the parking spring to provide braking force for the brake caliper to realize parking braking. In order to realize the service brake and parking brake of the train, the foundation brake device is usually provided with a common brake cylinder and a parking brake cylinder. Usually, the common brake cylinder a...
Claims
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IPC IPC(8): F16D65/14F16D121/04F16D125/02
Inventor 韩红文朱晔易峰赵飞霍伟
Owner CRRC CHANGZHOU TECH MARK IND CO LTD