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Cantilever structure of cantilever crane

A crane and cantilever technology, applied in the field of cantilever structure, can solve problems such as reducing bearing life and affecting crane balance, and achieve the effect of reducing centrifugal influence and improving stability and balance

Pending Publication Date: 2018-04-20
浙江邦博机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the long cantilever, the weight of the heavy object generates a large moment through the cantilever, which affects the balance of the crane, and this moment acts on the rotating support part of the cantilever, reducing the life of the bearing

Method used

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  • Cantilever structure of cantilever crane
  • Cantilever structure of cantilever crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: as figure 1 and 2 As shown, a cantilever 2 structure of a cantilever crane includes a cantilever 2 and a balance arm 3, one end of the cantilever 2 is rotatably mounted on the column 1, the cantilever 2 is provided with a mobile trolley 5, and the balance arm 3 is slidably installed On the cantilever 2 and move along the length direction of the cantilever 2, a drive mechanism is provided between the moving trolley 5 and the balance arm 3 to drive the balance arm 3 to move inversely relative to the moving trolley 5 7. To control the distance from the end of the balance arm 3 to the center of rotation of the boom 2, so that the distance from the end of the balance arm 3 to the center of rotation of the boom 2 is the same as the distance from the moving trolley 5 to the center of rotation of the boom 2 The distance of the center of rotation of the cantilever 2 increases and decreases synchronously.

[0020] The driving mechanism 7 includes a movable pulley ...

Embodiment 2

[0023] Embodiment 2: The difference from Embodiment 1 is that a counterweight is provided on the balance arm 3, and the counterweight is respectively arranged on both sides of the rotation center of the cantilever 2 opposite to the mobile trolley 5. The counterweight is fixedly installed on the end of the balance arm 3 away from the cantilever 2 .

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PUM

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Abstract

The invention relates to a cantilever structure of a cantilever crane. The cantilever structure of the cantilever crane comprises a cantilever and a balance arm. One end of the cantilever is rotatablyinstalled on a stand column. A moving trolley is arranged on the cantilever. The balance arm is slidably installed on the cantilever and moves in the length direction of the cantilever. A driving mechanism used for driving the balance arm to reversely move relative to the moving trolley is arranged between the moving trolley and the balance arm, so that the distance from the end of the balance arm to the rotating center of the cantilever is controlled to be increased or decreased synchronously along with the distance from the moving trolley to the rotating center of the cantilever. Accordingto the cantilever structure of the cantilever crane, the cantilever and the balance arm which can move relatively are arranged, and the position of the gravity center of the cantilever is changed by changing the length of the cantilever, so that the centrifugal influence generated when the cantilever rotates is reduced, and the rotating stability and balance of the cantilever are improved.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a cantilever structure of a cantilever crane. Background technique [0002] Cantilever crane, also known as cantilever crane, is a small and medium-sized lifting equipment developed in recent years. It is more superior than other conventional lifting equipment in the occasion of long-distance and intensive transportation. The working strength of the current cantilever crane is light. The crane is composed of a column, a slewing arm slewing drive device and an electric hoist. The lower end of the column is fixed on the concrete foundation through anchor bolts. The hoist runs in a straight line from left to right on the cantilever I-beam, and lifts heavy objects. The jib of the crane is a hollow steel structure with light weight, large span, large lifting capacity, economical and durable. However, due to the long cantilever, the weight of the heavy object generates a large moment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/14B66C23/687
CPCB66C23/14B66C23/706
Inventor 朱晓翔
Owner 浙江邦博机械有限公司