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Relieving device, parking brake cylinder and brake clamp unit

A technology for parking brakes and parking cylinders, which is applied in the field of relief devices, parking brake cylinders and brake caliper units. It can solve problems such as unstable cooperation between draw hooks and ratchets, and achieve the effect of simple device structure.

Active Publication Date: 2021-05-04
QINGDAO SRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manual relief device transmits the input force through the inclined surface of the pull pin. During the movement, the pull hook not only bears force in the axial direction, but also bears force in the axial direction of the pull pin rod body, and the cooperation between the pull hook and the ratchet is unstable.

Method used

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  • Relieving device, parking brake cylinder and brake clamp unit
  • Relieving device, parking brake cylinder and brake clamp unit
  • Relieving device, parking brake cylinder and brake clamp unit

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Embodiment Construction

[0063] The technical solutions of the present application will be described in detail below in conjunction with specific embodiments. However, it should be understood that without further description, elements, structures and features in one embodiment can also be beneficially combined in other embodiments.

[0064] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features . Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature.

[0065] In the description of this application, it should be noted that, unless otherwise clearly stipulated and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connectio...

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Abstract

The invention provides a relieving device which comprises a ratchet wheel, a pawl matched with the ratchet wheel and a relieving mechanism connected with the pawl to control the position relation between the pawl and the ratchet wheel, and the relieving mechanism comprises a first rotating piece, a first shaft and a first cam. According to the relieving device provided by the invention, the first cam drives the first shaft to move linearly to achieve state switching of the relieving device, the first shaft is subjected to the pulling force effect of the first cam, the first rotating piece is subjected to the torque transmitted by the first shaft, and the stress of the first rotating piece is stable and single.

Description

technical field [0001] The application belongs to the technical field of rail vehicle braking, and in particular relates to a release device, a parking brake cylinder and a brake caliper unit. Background technique [0002] The parking cylinder is used to provide braking force for long-term parking of the vehicle. The working principle of the parking cylinder is: filling the parking cylinder cavity with pressure medium to release the parking brake, and discharging the pressure medium to apply the parking brake by compressing the spring force. In order to cope with extraordinary situations during the use of the parking cylinder, it is necessary to relieve the parking brake through the relief device when the parking state is not filled with pressure medium. [0003] Chinese patent CN206409553U discloses a manual relief device for a vehicle parking cylinder, which includes a hand relief body fixed on the outer wall of the parking cylinder. The hand relief body has a cavity, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61H5/00B61H13/20B61H13/34
CPCB61H5/00B61H13/34B61H13/20
Inventor 覃立伟徐少亭刘晓京刁有彬刘玉萍
Owner QINGDAO SRI TECH CO LTD