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Proportional Zoned Stability Control Torque Limiting System

A stability control and sub-area technology, applied in the direction of fluid pressure actuation system safety, fluid pressure actuation device, servo motor components, etc., can solve the loss of crane lifting capacity, high performance requirements of the controller, and increase the system failure rate and other issues, to achieve the effects of high security, improved utilization efficiency, and good stability control performance

Active Publication Date: 2018-03-16
XCMG XUZHOU TRUCK MOUNTED CRANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution can well solve the above-mentioned problem of loss of crane lifting capacity due to the uniqueness of the maximum working moment, and improve the utilization efficiency of the crane's lifting capacity, but requires more sensor elements, which increases the system failure rate , and the controller has high performance requirements and high cost, so it is not suitable for the use of low-cost truck-mounted cranes

Method used

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  • Proportional Zoned Stability Control Torque Limiting System
  • Proportional Zoned Stability Control Torque Limiting System
  • Proportional Zoned Stability Control Torque Limiting System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Embodiment: Taking the knuckle-arm truck-mounted crane equipped with a proportional sub-area stability control moment limiting system as an embodiment,

[0038] Input the allowable maximum working torque values ​​corresponding to different working areas in the slewing area of ​​the crane into the signal processing unit of the area detection unit 4, and the signal processing unit calculates the maximum working torque at the maximum working torque according to the actual operating conditions and geometric dimensions of the crane. The pressure value generated by the rodless chamber of the first luffing cylinder is calculated according to the pressure value of the rodless chamber of the first luffing cylinder to calculate the size of the electrical signal value to be output, and then the area detection unit can be determined for each actual working area of ​​the crane 4 The electrical signal value that should be output. When the detection unit of the area detection unit 4 d...

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Abstract

The invention discloses a proportion type regional stability control moment limiting system which comprises a region detection unit, a proportion pressure compensation valve, a moment limiting unloading valve and a moment limiting control valve. The region detection unit is used for detecting the current work region of a crane and controlling the set pressure of the proportion pressure compensation valve. The proportion pressure compensation valve is a proportion type pressure compensation valve and can continuously set a pressure set value in proportion in real time according to input electrical signals and set the crane to have different maximum work moments in different work regions. A first oil opening of the proportion pressure compensation valve and a second oil opening of the proportion pressure compensation valve are formed in the outer portion of the proportion pressure compensation valve. The first oil opening of the proportion pressure compensation valve communicates with a first variable-amplitude rodless cavity through an anti-explosion valve and a first proportion variable-amplitude balance valve. The second oil opening of the proportion pressure compensation valve communicates with a first oil opening of the moment limiting control valve. A moment limiting valve is jointly formed by the moment limiting unloading valve and the moment limiting control valve, and the moment limiting function of the crane is achieved.

Description

technical field [0001] The invention relates to a proportional subregional stability control moment limiting system, which belongs to the technical field of truck-mounted cranes. . Background technique [0002] In recent years, with the development of market and technology, the lifting capacity of truck-mounted cranes has been continuously improved, and the application of knuckle-arm cranes in our country is increasing day by day, and the requirements for their operation safety are also increasing. The function of the torque limiting system is to limit the operating torque and play the role of safety protection. Therefore, the moment limiting system, as the main safety protection system of the truck-mounted crane, has gradually become the research focus of the truck-mounted crane. [0003] In the prior art, a technical solution based on a hydraulically controlled torque limiting valve to realize the torque limitation of the truck-mounted crane has been proposed, but the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/88B66C23/82F15B13/06F15B20/00
CPCB66C23/905B66C23/54
Inventor 陈志伟满军满珍宁吉平韩文超刘汉光薛卡
Owner XCMG XUZHOU TRUCK MOUNTED CRANE
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