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Lifting device

A lifting device and spreader technology, applied in the directions of transportation and packaging, load hanging components, etc., can solve the problems of unbalanced multi-point lifting and low efficiency of adjustment methods, and achieve the effect of high degree of automation, high precision and high efficiency

Active Publication Date: 2019-03-26
CHINA MINGSHENG DRAWIN TECH INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a lifting device, which solves the problems of unbalanced multi-point lifting and low efficiency of adjustment methods in traditional lifting devices

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Embodiment Construction

[0015] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0016] Please refer to figure 1 , a hoisting device 100 in one embodiment includes a sling 10 and at least two hoisting assemblies 20 arranged on the sling 10, the hoisting assembly 20 includes a connecting rod 22, an oil cylinder 24 and a lifting rope 26, and the connecting rod 22 is rotatably arranged on On the sling 10, one end of the...

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Abstract

The invention discloses a lifting device which comprises a lifting tool and at least two lifting assemblies arranged on the lifting tool. Each lifting assembly comprises a connecting rod, an oil cylinder and a lifting rope, wherein the connecting rod is rotationally arranged on the lifting tool, one end of the connecting rod is connected with the lifting rope, the other end of the connecting rod is rotationally connected with a piston rod of the oil cylinder, and the cylinder barrel end of the oil cylinder is rotationally arranged on the lifting tool. Rod cavities of all the oil cylinders of the lifting device communicate with one another, and rodless cavities of all the oil cylinders communicate with one another. In the above lifting device, when force exerted on one lifting point is notequal to force exerted on the other lifting points, the pressure intensity in the rod cavity of the oil cylinder connected with the lifting point is different from the pressure intensity in the rod cavities of the oil cylinders connected with the other lifting points, at the moment, hydraulic oil can flow between the rod cavities which communicate with one another till the pressure intensity of the rod cavities communicate with one another is the same, hydraulic oil can also flow between the rodless cavities communicate with one another till the pressure intensity of the rodless cavities communicate with one another is the same, and therefore the multiple lifting points can reach balance, efficiency is high, and precision is high.

Description

technical field [0001] The present application relates to the technical field of hoisting equipment, in particular to a hoisting device. Background technique [0002] Multi-point lifting is mostly used in lifting large and heavy objects, large flat objects, mines and other occasions. It is difficult to achieve uniform distribution of lifting weight among multiple lifting points. There are problems such as different tensions of lifting ropes, different lengths of lifting ropes, unbalanced lifting, and inability to maintain a level. These problems have high requirements for precision objects and lifting synchronization. It is difficult to solve it under the working conditions with high levelness requirements. Therefore, when there is a need for multi-point balanced lifting, the original method of manually adjusting the length of the rope can only be used, which is inefficient, poor in accuracy, and time-consuming. Contents of the invention [0003] In order to solve the abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C1/12
CPCB66C1/12
Inventor 陈明杨军宏李俄锋
Owner CHINA MINGSHENG DRAWIN TECH INVESTMENT CO LTD