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Counter weight-free crane

A technology without counterweight and crane, applied in cranes and other directions, can solve the problems of small self-weight lifting weight, etc., and achieve the effect of large lifting weight, large lifting range and small self-weight

Pending Publication Date: 2018-07-20
宁波建工建乐工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It also has the advantages of small self-weight, large lifting weight, flexible movement, and convenient positioning, which solves many problems of existing building counterweight cranes and simple cranes.

Method used

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Experimental program
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Effect test

Embodiment 1

[0018] Embodiment one: if Figure 1 to Figure 2 As shown, a crane without counterweight includes a frame body 1, a rotating bearing 2 is arranged on the frame body 1, a moving platform 3 is arranged on the rotating bearing 2, and a moving platform 3 is arranged on the moving platform 3 The telescopic boom 4, the boom 4 includes an adjustable boom 42 and a fixed boom 41, the adjustable boom 42 can move and be fixed on the fixed boom 41, the The adjustable boom 42 and the fixed boom 41 are fixed by bolts. A jack 6 is also arranged on the rotating bearing 2, and the jack 6 is connected to the fixed boom 41. The mobile platform 3 is also provided with a winch 5 matched with the boom 4 . The frame body 1 is also provided with several vertical struts 7 which can bear against the floor board 100 , and the vertical struts 7 are directly behind the mobile platform 3 . Described vertical strut 7 comprises fixed strut 71 and adjustable strut 72, and described adjustable strut 72 can m...

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Abstract

The invention relates to a counter weight-free crane and belongs to the field of building construction. The counter weight-free crane comprises a rack body, wherein a rotating bearing is arranged on the rack body; a moving platform is arranged on the rotating bearing; a telescopic lazy arm is arranged on the moving platform; a winch matched with the lazy arm is also arranged on the moving platform; a plurality of vertical supporting rods capable of leaning against floor slabs are also arranged on the rack body; and the vertical supporting rods are right behind the moving platform. Compared with the prior art, the crane can be jacked between upper and lower floor slabs through the supporting rods to balance the upsetting moment during hoisting. The length of the lazy arm can stretch freelyand can rotate up and down and left and right, so that the counter weight-free crane is large in hoisting range. The counter weight-free crane also has the advantages of being small in self weight, large in hoisting weight, flexible to move, convenient to position and the like, and solves many problems of existing counter weight cranes and simple cranes for buildings.

Description

technical field [0001] The invention belongs to the field of building construction, in particular to a simple crane. Background technique [0002] Traditional cranes in the field of site construction are mainly divided into simple cranes with or without counterweights and counterweight cranes with counterweights. A common counterweight crane is to set a concrete (or steel block) counterweight on the back side of the pedestal, which is heavy, difficult to move, time-consuming and labor-intensive, and difficult to move once it is fixed. And general simple crane all is to adjust the angle of boom up and down and the swing of horizontal direction by steel wire rope, can't set up the boom of long distance and can't lift the article of heavy weight. These two cranes have limitations in actual use, so a crane with both advantages and no disadvantages is urgently needed in the construction field. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/20B66C23/687B66C23/62
CPCB66C23/20B66C23/62B66C23/701
Inventor 徐增建孙青山许必强胡正平周立伟金国锋刘小祥
Owner 宁波建工建乐工程有限公司
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