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Parking brake cylinder and brake caliper unit

A parking brake and parking cylinder technology, applied in the field of rail transit, can solve the problems of poor safety and high use cost, and achieve the effects of reducing weight, low use cost and reducing volume

Active Publication Date: 2022-06-28
CRRC QINGDAO SIFANG ROLLING STOCK RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the above-mentioned problems of poor safety and high use cost due to spring fatigue attenuation in the existing parking brake device, and provides a parking brake cylinder and brake caliper unit with high safety and low use cost

Method used

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  • Parking brake cylinder and brake caliper unit
  • Parking brake cylinder and brake caliper unit
  • Parking brake cylinder and brake caliper unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Example 1: see Figure 1 to Figure 3 , a parking brake cylinder comprising:

[0081] Intermediate 1;

[0082] The brake cylinder block 2 and the intermediate body 1 form a brake cylinder cavity;

[0083] The brake piston 3 is arranged in the brake cylinder cavity;

[0084] The parking cylinder 4 and the intermediate body 1 form a parking cylinder cavity, and two sealing cavities 401 are arranged in the parking cylinder 4, and the two sealing cavities are communicated with each other;

[0085] Force transmission unit, including:

[0086] The force transmission component is placed in the parking cylinder cavity, and the force transmission component includes a parking screw 5, a parking nut 6 sleeved on one end of the parking screw 5, and a ratchet 7 sleeved on the other end of the parking screw 5;

[0087] Two dowel rods 8 are arranged symmetrically around the circumference, one end of the dowel rod 8 is connected to the brake piston 3, and the other end is connected ...

Embodiment 2

[0113] Embodiment 2: Different from Embodiment 1, in this embodiment, see figure 1 , Figures 13 to 16 , the mitigation device 10 includes:

[0114] a pawl assembly, which cooperates with the ratchet tooth 701;

[0115] The mitigation body 1001 is provided with a mitigation cavity 1002, and one end of the mitigation body 1001 is provided with an air inlet 1003 that communicates with the mitigation cavity 1002;

[0116] The hand wedge 1004, one end of the first through hole 1005 on the circumference is arranged in the relief cavity 1002, and the other end extends out of the relief body 1001; the hand wedge 1004 in the relief cavity 1002 is provided with a pawl assembly on the hand wedge 1004 The matching wedge-shaped working surface 1006;

[0117] The first elastic member 1007 is arranged in the relief cavity 1002, between the hand relief wedge 1004 and the relief body 1001;

[0118] The sliding member 1008 is arranged in the first through hole 1005;

[0119] The limiting ...

Embodiment 3

[0137] Example 3: see Figure 21 , this embodiment provides a brake caliper unit, including a caliper arm assembly 18 and a parking brake cylinder 19, the parking brake cylinder 19 is hinged with the caliper arm assembly 18 through a connecting bolt 20, the parking brake cylinder 19. The parking brake cylinder described in Example 1 is used. Among them, the clamp arm acts as a force transmission lever, and the braking output force of the parking brake cylinder 19 is transmitted to the brake pad holder 21 through the clamp arm.

[0138] In this embodiment, the brake caliper unit is installed on the bogie frame of the rail transit vehicle, and the brake disc is tightened by the brake pad, and the kinetic energy of the train is transferred by the friction between the brake pad on the brake pad holder and the brake disc. Converted into heat dissipation to achieve the effect of slowing down or stopping.

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Abstract

The invention relates to a parking brake cylinder and a brake caliper unit. The parking brake cylinder includes: an intermediate body; a brake cylinder body, which forms a brake cylinder chamber with the intermediate body; and a brake piston, which is arranged in the brake cylinder chamber The parking cylinder body forms a parking cylinder cavity with the intermediate body, and at least two sealed cavities are arranged in the parking cylinder body, and each sealing cavity is connected to each other; the force transmission unit includes: a force transmission component, which is placed in the parking cylinder cavity, and the force transmission component Including the parking screw, the parking nut set outside the parking screw and the ratchet set on the other end of the parking screw; at least two dowel rods are arranged symmetrically in a circle, one end of the dowel rod is connected to the brake piston, and the other end passes through the The intermediate body is connected to the parking nut; the compression spring is set on the dowel rod, and is located between the intermediate body and the parking nut; multiple parking pistons are installed on the parking nut in a circumferential symmetry, and each parking piston corresponds to a sealed cavity Setting; relief device, cooperate with ratchet. The invention has high safety, long service life and low use cost.

Description

technical field [0001] The invention belongs to the technical field of rail transit, relates to rail vehicle braking technology, and in particular relates to a parking brake cylinder and a brake caliper unit. Background technique [0002] The braking devices for rail transit vehicles all have the function of parking brake. Most of the parking brakes are applied by compression springs. The working principle of the parking brake is: charging the parking cylinder with compressed air to relieve the parking brake and discharging the compressed air. The parking brake is applied by compression spring force. For example: the Chinese invention patent with the authorization announcement number CN101788942B discloses a combined cylinder with a force conversion transmission device with a variable transmission ratio, including: a service brake cylinder as an active service brake, the service brake cylinder with at least one pressure-medium-operated service brake piston, which actuates a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/18F16D65/00F16D121/04
CPCF16D65/18F16D65/0068F16D2121/04
Inventor 张昕覃立伟李培署王风洲徐少亭刁有彬
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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