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Variable-amplitude limiting device and crane

A limit device, crane technology, applied in the direction of cranes, transportation and packaging, load hanging components, etc., can solve the problem that the amplitude limit device cannot be adjusted, and achieve the effect of convenient construction and convenient adjustment

Active Publication Date: 2013-06-26
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide an amplitude limiting device and a crane to solve the problem that the amplitude limiting device in the prior art cannot be adjusted

Method used

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  • Variable-amplitude limiting device and crane
  • Variable-amplitude limiting device and crane
  • Variable-amplitude limiting device and crane

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Embodiment Construction

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0023] As a first aspect of the present invention, an amplitude limiting device is provided. Such as figure 2 and image 3 As shown, the amplitude limiting device includes: a switch element (not shown), a position-adjustable first stopper 12 and a position-adjustable second stopper 13 . The amplitude limiting device further includes a connecting piece 14 and a force applying component 15, wherein the connecting piece 14 and the force applying component 15 are respectively arranged on two sides of the switch element. The connecting piece 14 and the force applying part 15 drive the switch element to move in the amplitude range defined by the first block 12 and the second block 13, and the switch element sends out a first limit signal when it touche...

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PUM

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Abstract

The invention provides a variable-amplitude limiting device and a crane. The variable-amplitude limiting device comprises a switching element, a first stopping block (12) capable of with adjustable position and a second stopping block (13) with adjustable position. The variable-amplitude limiting device also comprises a connection piece (14) and a force applying part (15), wherein the connection piece (14) and the force applying part (15) are respectively arranged on two sides of the switching element and drive the switching element to do variable-amplitude region motion limited by the first stopping block (12) and the second stopping block (13); when touching the first stopping block (12), the switching element sends out a first limiting signal; and when touching the second stopping block (13), the switching element sends out a second limiting signal. By adopting the variable-amplitude limiting device, the problem that the variable-amplitude limiting device in the prior art cannot be adjusted can be solved.

Description

technical field [0001] The invention relates to the field of cranes, in particular to a luffing limiting device and a crane. Background technique [0002] Many occasions in the prior art require the use of amplitude limiting devices, for example, cranes or other machines that need to limit the opening angle or swing amplitude. Taking a crane (especially a jib tower crane) as an example, the amplitude limiting device in the prior art will be described below. [0003] figure 1 The working principle diagram of the amplitude limiting device used in the crane in the prior art is shown. Such as figure 1 As shown, the crane in the prior art includes a balance arm 40 , a lifting arm 30 pivotably connected to the balance arm 40 , and two limit switches 11 . Please refer to figure 1 , jib 30 is available at figure 1 Rotate between the A and B positions in the boom, when the boom moves to the A or B position, the semicircular device 31 on the boom will touch the corresponding lim...

Claims

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Application Information

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IPC IPC(8): B66C23/88B66C13/50
Inventor 王刚李林张闯邢健
Owner ZOOMLION HEAVY IND CO LTD
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