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Swing gear hydraulic circuit and vehicle

A hydraulic circuit and vehicle technology, applied in the hydraulic field, can solve problems such as brake failure, engine reverse drag, flameout, etc., to achieve reliable braking and avoid brake failure

Active Publication Date: 2021-08-10
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the drive system of the vehicle has no deceleration function. When the vehicle goes down a long slope, it is only decelerated by such as wheel air pressure braking. In this way, the brake is prone to heat due to friction during braking and cause The risk of brake failure is high; what’s more, when the vehicle goes down a steep slope, the engine may back-drag due to excessive speed, which may easily cause the engine to stall and stall.

Method used

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  • Swing gear hydraulic circuit and vehicle
  • Swing gear hydraulic circuit and vehicle

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Embodiment Construction

[0023] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the present invention, it should be understood that the orientation or positional relationship indicated by the terms "forward", "backward", etc. correspond to the actual orientation or positional relationship; It is only for the convenience of describing the present invention and simplifying the description, but does not indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0024] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0025] One aspect of the present invention provides a hydraulic circuit for rotary speed change, such as Figure 1-2 As shown: the rotary transmission hydraulic circuit includes...

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Abstract

The invention relates to the technical field of hydraulic pressure, and discloses a rotary transmission hydraulic circuit and a vehicle. The rotary transmission hydraulic circuit includes a main circuit (1); the main circuit (1) includes a pump (11), a motor (12), and a first oil circuit ( 13) and the second oil passage (14); the main circuit (1) also includes the motor (12) that is respectively arranged on the first oil passage (13) and the second oil passage (14) The rotation speed of the first control valve (151) and the second control valve (152) that control the rotation speed of the motor (12) automatically change the working position through flow control. The present application can effectively adjust the rotation speed of the motor 12 to achieve the purpose of braking. This method is used for reliable braking and avoids the problem of failure of mechanical braking due to thermal friction.

Description

technical field [0001] The invention relates to the technical field of hydraulic pressure, in particular to a rotary transmission hydraulic circuit and a vehicle. Background technique [0002] At present, the drive system of the vehicle has no deceleration function. When the vehicle goes down a long slope, it is only decelerated by such as wheel air pressure braking. In this way, the brake is prone to heat due to friction during braking and cause If the brake fails, the risk is high; what’s more, when the vehicle goes down a steep slope, the engine may back-drag due to excessive speed, which may easily cause the engine to stall and stall. In order to overcome the above drawbacks, a hydraulic circuit with retarding function is needed. Contents of the invention [0003] The object of the present invention is to overcome the problem of no retarding function in the drive system in the prior art, and provide a rotary speed-shifting hydraulic circuit with a slowing-down functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/042F15B11/08F15B13/04F15B21/08F15B21/0423
CPCF15B11/0426F15B11/08F15B13/04F15B21/087F15B2211/205F15B2211/255F15B2211/40576F15B21/0423
Inventor 吴永闯郭堃龙卫国
Owner ZOOMLION HEAVY IND CO LTD