Method for lowering gravity center of crane arm support

A crane and boom technology, applied in the field of cranes, can solve the problems of cumbersome operation, increase the operating cost of crawler cranes, and reduce the work efficiency of crawler cranes, and achieve the effects of simple operation, lowering the center of gravity, and preventing tipping

Inactive Publication Date: 2010-12-01
SHANGHAI SANY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method is cumbersome to operate, increases the operating cost of the crawler crane and the workload of the operator, and reduces the working efficiency of the crawler crane.

Method used

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  • Method for lowering gravity center of crane arm support
  • Method for lowering gravity center of crane arm support
  • Method for lowering gravity center of crane arm support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In a first preferred embodiment of the present invention, the method for lowering the center of gravity of the jib of a crane comprises the following steps:

[0023] Step 1: Connect the crane pull plate connected to the top of the jib to a jib section of the jib;

[0024] Step 2: Fold the jib at the jib section;

[0025] Step 3: Connect the folded booms at both ends through the bracket;

[0026] Step 4: Finally, vertically connect the folded jib to the crane through the pull rope.

[0027] After being folded, the state of the crane jib is as follows figure 2 shown. The pull plate 1 originally connected to the top of the jib is connected to a certain jib section of the jib, and the bracket 2 is used to connect the folded jib, so that the unfolded and folded two parts are firmly connected together. In order to ensure the stability of the folded jib, the folded jib is connected to the crane with a stay rope 3 to prevent it from swinging back and forth too much, so as ...

Embodiment 2

[0029] In a second preferred embodiment of the present invention, the method for lowering the center of gravity of a jib of a crane includes the following steps:

[0030] Step 1: Connect the first stay rope of the crane connected to the top of the jib to a jib section of the jib;

[0031] Step 2: Fold the jib at the jib section;

[0032] Step 3: Connect the folded booms at both ends through the bracket;

[0033] Step 4: Finally, vertically connect the folded jib to the crane through the second stay rope.

[0034] In this embodiment, the method for lowering the center of gravity of the jib of the crane is basically the same as the method in the first preferred embodiment, except that under the appropriate lifting requirements, a pull rope can be used to connect a certain jib joint to maintain the balance of the crane. the goal of.

Embodiment 3

[0036] In a third preferred embodiment of the present invention, the method for lowering the center of gravity of the jib of a crane includes the following steps:

[0037] Step 1: Connect the crane pull plate connected to the top of the jib to the middle arm of the jib;

[0038] Step 2: Fold the jib at the middle arm;

[0039] Step 3: Connect the folded booms at both ends through the bracket;

[0040] Step 4: Finally, vertically connect the folded jib to the crane through the pull rope.

[0041] In this embodiment, the method for lowering the center of gravity of the jib of the crane is basically the same as in the first preferred embodiment and the second preferred embodiment, except that the stay rope in step 1 is specifically limited to be connected to the middle arm of the jib. In this way, the jib is folded along the center, and the folded two parts of the jib are symmetrical, so that the center of gravity of the folded crane is minimized, ensuring the overall stability...

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PUM

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Abstract

The invention provides a method for lowering a gravity center of a crane arm support, comprising the following steps: connecting a crane pulling plate connected at the top end of the arm support to one arm section of the arm support; folding the arm support from the arm section; utilizing a bracket to connect the folded two arm supports into a whole; and finally utilizing a digging rope to vertically connect the folded arm support to the crane. The method for lowering the gravity center of the crane arm support of the invention has simple operation, effectively lowers the gravity center of the whole arm support of a crawler crane in the travelling process and improves the balanced capacity thereof, thereby effectively preventing the crane from tipping in the travelling process and lowering the requirements of the crane on travelling pavement levelness.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a method for lowering the center of gravity of the jib of the crane. Background technique [0002] When the crawler crane is walking and working, it needs to maintain its own balance. Typically, a certain weight of counterweight is loaded on the rear of the crawler crane to keep it stable. [0003] However, when the crawler crane is in operation, in order to ensure work efficiency, it is usually necessary to carry out full jib travel. figure 1 It is a schematic diagram of the state of the crawler crane when the full boom is walking. Such as figure 1 As shown, even if a certain weight of counterweight is loaded at the rear of the crawler crane, it is still possible to tip over while walking. This is because the jib of the crawler crane itself has considerable weight, and when the crawler crane is traveling with the full jib, the center of gravity of the entire crawler crane is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/68
Inventor 蔡淳崔铁军
Owner SHANGHAI SANY TECH
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