Buffer device and back-tilting preventing device of boom with buffer device

A cushioning device and anti-backward technology, which is applied in the direction of spring/shock absorber, vibration suppression adjustment, mechanical equipment, etc., can solve the problems of poor buffering effect and inability to adjust the buffering device in real time

Active Publication Date: 2012-07-11
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing buffer devices with fixed buffer characteri...

Method used

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  • Buffer device and back-tilting preventing device of boom with buffer device
  • Buffer device and back-tilting preventing device of boom with buffer device
  • Buffer device and back-tilting preventing device of boom with buffer device

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Embodiment Construction

[0042] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0043] Such as Figure 1 to Figure 4 As shown, the present invention provides a buffer device, which includes an actuator cylinder 1, wherein the buffer device also includes a control valve 2 and a control device 5, and the rodless chamber of the actuator cylinder 1 is connected to the control valve. The working port of the valve 2) communicates, and the control device 5 controls the action of the control valve 2 according to the working state of the buffer device, so that the rodless cavity has different pressures.

[0044] Through the above-mentioned technical scheme, because the control device 5 can control the action of the control valve 2 according to the ...

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PUM

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Abstract

The invention discloses a buffer device, which comprises a brake cylinder (1), a control valve (2) and a control device (5). A rod-less cavity of the brake cylinder (1) is communicated with a work port of the control valve (2), and the control device (5) controls action of the control valve (2) according to working states of the buffer device so that different pressure can be applied to the inside of the rod-less cavity. The invention further discloses a back-tilting preventing device of a boom comprising the buffer device. The buffer characteristics of the buffer device can be regulated in real time, and even on the working conditions of sudden unloading and the like, the dynamic characteristics of the buffer device can be regulated in real time, so that the mechanical behavior of the boom can be optimized, the boom can be stabilized within the regular elevation range, back tilting of the boom can be prevented and the buffering power peak can be optimum.

Description

technical field [0001] The present invention relates to the field of engineering machinery, in particular to an anti-backward device for a large boom of an engineering machine, and more particularly to a buffer device in the anti-backward device. Background technique [0002] The anti-backward dynamic buffer device for large-scale jibs of construction machinery provides back-tilt protection for large-scale truss arms and box-type jibs in construction machinery under large impact loads. [0003] The existing anti-backward device usually adopts spring buffer device and hydraulic buffer device, but whether it is a spring buffer device or a hydraulic buffer device, its buffer characteristics are fixed, so that the buffer force of the anti-backward device during work cannot adapt to the working conditions The change. Especially under sudden unloading and other working conditions, the dynamic response of the boom is non-linear, which requires real-time adjustment of the dynamic c...

Claims

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Application Information

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IPC IPC(8): F16F15/027F16F15/04B66C23/88
Inventor 刘洋李宇力刘耀宗张劲
Owner ZOOMLION HEAVY IND CO LTD
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