Boom telescopic device, boom and construction machinery

A telescoping device and construction machinery technology, which is applied to cranes and other directions, can solve problems affecting the use efficiency and time-consuming of construction machinery aerial work vehicles and fire rescue vehicles

Active Publication Date: 2016-03-09
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the telescoping method of more than 5 booms is usually a single-cylinder latch mechanism to telescopic each boom in turn. The defect of this telescopic method is that it takes a lot of time and seriously affects construction machinery, especially high-altitude operations. Utilization efficiency of vehicles and fire rescue vehicles

Method used

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  • Boom telescopic device, boom and construction machinery
  • Boom telescopic device, boom and construction machinery

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Embodiment Construction

[0038] 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.

[0039] In the present invention, in the case of no contrary description, the used orientation words such as "up, down, left and right" usually refer to the up, down, left and right shown in the accompanying drawings; "inside and outside" Refers to the inside and outside of the outline of each part itself.

[0040] According to one aspect of the present invention, there is provided a telescopic device for a boom, the boom includes a first boom 1, a second boom 2 and a third boom 3, wherein the telescopic device for the boom includes: A multi-stage telescopic hydraulic cylinder for each boom section of the telescopic boom; the first guide wheel 10 and the first g...

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PUM

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Abstract

The invention discloses a telescopic device of an arm frame. The arm frame comprises a first knuckle arm (1), a second knuckle arm (2) and a third knuckle arm (3); the telescopic device of the arm frame comprises multi-level telescopic hydraulic cylinders, a first guide pulley (10), a first guide element (11), a second guide pulley (18) and a second guide element (17), wherein the multi-level telescopic hydraulic cylinders is used for stretching the knuckle arms of the arm frame; the first guide element (11) is wound on the first guide pulley (10); the second guide element (17) is wound on the second guide pulley (18); in addition, the invention further discloses the arm frame and engineering machinery. According to the telescopic device of the arm frame, because the multi-level telescopic hydraulic cylinders are adopted to drive a plurality of knuckle arms simultaneously, and the guide pulleys and the guide elements enabling the telescopic speeds of the knuckle arms to be consistent are mounted on the knuckle arms, and the synchronization telescope of the knuckle arms of the arm frame can be achieved.

Description

technical field [0001] The invention relates to a telescopic device of a boom, a boom equipped with the telescopic device of the boom and a construction machine including the boom. Background technique [0002] The telescopic boom is an important component of construction machinery such as aerial work vehicles, fire rescue vehicles, and truck cranes. It plays an important role in carrying and transporting people and objects to a certain operating height. Among them, the expansion and contraction mode of the telescopic boom has an important influence on the performance of construction machinery such as aerial work vehicles, fire rescue vehicles, and truck cranes. [0003] In the prior art, the telescoping method of more than 5 booms is usually a single-cylinder latch mechanism to telescopic each boom in turn. The defect of this telescopic method is that it takes a lot of time and seriously affects construction machinery, especially high-altitude operations. The use efficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/64B66C23/693
Inventor 张斌付玲吴达鑫甘建国邓伟
Owner ZOOMLION HEAVY IND CO LTD
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