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Variable amplitude suspension arm of oil cylinder as well as linear speed control method and device thereof

A line speed and boom technology, applied to cranes and other directions, can solve the problem that the line speed of the oil cylinder luffing boom cannot be automatically controlled

Active Publication Date: 2014-01-15
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an oil cylinder luffing boom and its linear velocity control method and device to solve the problem that the linear velocity of the oil cylinder luffing boom cannot be automatically controlled

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  • Variable amplitude suspension arm of oil cylinder as well as linear speed control method and device thereof
  • Variable amplitude suspension arm of oil cylinder as well as linear speed control method and device thereof
  • Variable amplitude suspension arm of oil cylinder as well as linear speed control method and device thereof

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Embodiment Construction

[0054] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0055] The present invention provides an oil cylinder luffing boom. The specific description of the oil cylinder luffing boom is as follows:

[0056] The oil cylinder luffing boom includes a line speed control device for the oil cylinder luffing boom.

[0057] Preferably, the oil cylinder luffing boom also includes a variable amplitude speed limit enabling switch, wherein the line speed control device of the oil cylinder luffing boom is also used to control the line speed of the boom when the variable amplitude speed limit enabling switch is closed. speed.

[0058] In this embodiment, a line speed control device is added to the oil cylinder luffing boom, preferably, a variable amplitude speed...

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Abstract

The invention discloses a variable amplitude suspension arm of an oil cylinder as well as a linear speed control method and device thereof. The linear speed control method of the variable amplitude suspension arm of the oil cylinder comprises the following steps of: detecting an elevation of the suspension arm, the variation tendency of the elevation and the length of the suspension arm; obtaining the maximum linear speed of the suspension arm; calculating a first output current of an oil cylinder ratio valve according to the elevation of the suspension arm, the variation tendency of the elevation, the length of the suspension arm and the maximum linear speed of the suspension arm; and controlling the linear speed of the suspension arm by using the first output current. Through adoption of the linear speed control method and device, the linear speed of the variable amplitude suspension arm of the oil cylinder can be automatically controlled.

Description

technical field [0001] The invention relates to the field of oil cylinder luffing booms, in particular to an oil cylinder luffing boom and a linear speed control method and device thereof. Background technique [0002] The basic working principle of the oil cylinder luffing boom device is: the oil cylinder is supported near the pivot point of the boom, and the operator controls the expansion and contraction of the oil cylinder to realize the up and down luffing movement of the head of the remote boom. Because the length of the boom varies according to the requirements of each actual working condition, under the control of the same luffing amount, the weight at the head of the boom exhibits different linear velocities. [0003] At present, the linear speed control of the luffing has nothing to do with the length of the boom, but only has a linear relationship with the opening of the luffing handle of the oil cylinder. In order to control the maximum linear speed of luffing, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/82
Inventor 詹纯新刘权郭纪梅刘永赞胡奇飞蒋应龙
Owner ZOOMLION HEAVY IND CO LTD