Telescopic boom structure based on multi-stage oil cylinder and crane

A telescopic boom and crane technology, applied in the directions of crane, transportation and packaging, can solve the problems of self-heavy and high cost, and achieve the effect of reducing the force multiplication of the rope row and expanding the lifting capacity

Inactive Publication Date: 2016-03-23
XUZHOU HEAVY MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The inventors have found that at least the following problems exist in the prior art: the existing double-cylinder rope row type telescopic mechanism is composed of two telescopic oil cylinders, which is heavy and expensive

Method used

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  • Telescopic boom structure based on multi-stage oil cylinder and crane
  • Telescopic boom structure based on multi-stage oil cylinder and crane
  • Telescopic boom structure based on multi-stage oil cylinder and crane

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Embodiment Construction

[0052] Combine below Figure 2 ~ Figure 6 The technical solution provided by the present invention is described in more detail.

[0053] Explanation of names or terms involved in this article.

[0054] Multi-stage cylinder: that is, a multi-stage telescopic hydraulic cylinder, which is composed of two or more piston hydraulic cylinders. The piston rod of the previous piston cylinder is the cylinder barrel of the latter piston cylinder. Get longer work trips. by figure 2 The direction shown is an example, the piston cylinder of the first stage is the piston cylinder on the right side, and the piston cylinder of the rear stage is the piston cylinder on the left side.

[0055] see Figure 2 to Figure 5, Embodiment 1 of the present invention provides a telescopic arm structure, including a multi-section telescopic arm and a multi-stage oil cylinder 7, the multi-stage oil cylinder 7 is connected with the multi-section telescopic arm, and the multi-stage oil cylinder 7 can dire...

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Abstract

The invention discloses a telescopic boom structure based on a multi-stage oil cylinder and a crane, and relates to the field of engineering machinery. The telescopic boom structure is used for optimizing an existing telescopic boom structure. The telescopic boom structure comprises multiple telescopic booms and the multi-stage oil cylinder; the multi-stage oil cylinder is connected with the telescopic booms and at least can directly drive two of the telescopic booms to telescope. According to the telescopic boom structure, by adopting the multi-stage oil cylinder to drive the telescopic booms to telescope, the oil cylinder number is decreased, and therefore the weight and cost of the telescopic structure are lowered; in addition, part or complete of a rope row structure can be omitted, therefore, the phenomenon that rope row stress is multiplied is reduced, and the hoisting capacity of hoisting equipment where the telescopic boom structure is located is enlarged.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a multi-stage oil cylinder-based telescopic arm structure and a crane. Background technique [0002] At present, there are mainly two types of rope-type telescopic mechanisms: single-cylinder rope-type and double-cylinder rope-type. The single-cylinder rope-row telescopic mechanism consists of a telescopic oil cylinder, several steel wire ropes and pulleys, and is generally used for booms with less than four sections; the double-cylinder rope-row telescopic mechanism consists of two telescopic oil cylinders, several steel wire ropes, and pulleys. It can realize the expansion and contraction of five-section and above booms, and is currently mainly used for five-section booms. [0003] Rope-type telescopic mechanism: mainly composed of telescopic cylinders, wire ropes, pulleys, etc. It is a key component of telescopic boom cranes. The telescopic boom and the load bearing are r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/693
CPCB66C23/705B66C2700/03
Inventor 马善华朱威
Owner XUZHOU HEAVY MASCH CO LTD
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