Telescopic main arm mast, crane and operation method thereof

A telescopic crane technology, which is applied in the field of cranes and telescopic main boom masts, can solve problems affecting the normal use of cranes, damage to the main boom mast 10, failure of main boom mast materials, etc., to increase the length, improve stability, and improve The effect of force

Pending Publication Date: 2020-09-11
ZHEJIANG SANY EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Force F in jacking cylinder 2 The nearby main boom mast bears a huge bending moment. When the bending moment is large, it will cause the material failure of the mai

Method used

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  • Telescopic main arm mast, crane and operation method thereof
  • Telescopic main arm mast, crane and operation method thereof
  • Telescopic main arm mast, crane and operation method thereof

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Embodiment Construction

[0049]The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] like Figure 7 , Figure 8 As shown, the telescopic main boom mast 100 provided in this embodiment includes multi-stage telescopic brackets that are sequentially slidably connected; a driving mechanism is provided at the junction of two adjacent telescopic brackets, and one end of the driving mechanism is connected to two adjacent telescopic brackets. One telescopic bracket in the bracket is connected, the other end of the driving mechanism is connected with the other telescopic bracket of the two adjacent telesco...

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PUM

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Abstract

The invention provides a telescopic main arm mast, a crane and an operation method thereof, and relates to the technical field of cranes. The telescopic main arm mast comprises multi-stage telescopicbrackets connected in sequence slidably; a driving mechanism is provided at the joint of two adjacent telescopic brackets; one end of the driving mechanism is connected with one telescopic bracket, and the other end of the driving mechanism is connected with the other telescopic bracket; and the driving mechanism can drive the expansion and contraction of two adjacent telescopic brackets. Comparedwith the prior art, the telescopic main arm mast provided by the invention realizes the expansion and contraction of the main arm mast in the length direction through the multi-stage telescopic brackets connected in sequence slidably and the driving mechanism; and realizes the pulling-up of the telescopic main arm mast in the contracted state, and then realizes the expansion of the telescopic main arm mast through the driving mechanism, therefore, the risks that the main arm mast bears a great bending moment due to own weight in the pulling-up process, thus the material failure and damage ofthe main arm mast are caused, and the normal use of the crane is affected are avoided.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a telescopic main arm mast, a crane and an operating method thereof. Background technique [0002] At present, in the crane industry, the main boom mast of the crane is used for lifting the jib, and the length, strength, and stiffness of the main boom mast play a key role in the lifting capability of the crane. [0003] like figure 1 , figure 2 As shown, the bottom end of the existing main arm mast 10 is hinged with the turntable of the crane, and one end of the arm frame 20 is also hinged with the turntable, and the top of the main arm mast 10 is connected with the end of the arm frame 20 away from the turntable through the pull plate 30. By setting The hoisting mechanism on the turntable and on the side opposite to the boom 20 drives the main boom mast 10 to rotate, thereby lifting the boom 20 . If the boom 20 is to be pulled up, the main arm mast 10 must be raised at first,...

Claims

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Application Information

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IPC IPC(8): B66C23/693B66C23/62B66C23/84B66C23/82
CPCB66C23/62B66C23/705B66C23/82B66C23/84
Inventor 郭晓晨焦战方石磊庭
Owner ZHEJIANG SANY EQUIP
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