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Hydraulic control system with multisegment grab

A hydraulic control system and grab technology, applied in the direction of fluid pressure actuators, load suspension components, servo motors, etc., can solve the problems of less grasping and loose objects to be grasped, so as to reduce operation errors and improve The effect of work efficiency

Active Publication Date: 2010-12-29
SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the process of grasping, if the grasping speed is too fast, it is easy to cause a small amount of grasped objects or a situation where the grasping is not firm

Method used

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  • Hydraulic control system with multisegment grab

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Embodiment Construction

[0024] The present invention is further described below in conjunction with specific embodiment:

[0025] See figure 1 , which is a schematic diagram of the system of the present invention, including an oil pump 010, a reversing valve 030, an oil cylinder 040 and an external oil tank.

[0026] The reversing valve 030 is a three-position four-way electro-hydraulic valve. The reversing valve 030 has an oil inlet 031 , a first oil outlet 032 and a second oil outlet 033 . The reversing valve 030 can adjust the oil outlet through the valve, so that the first oil outlet 032 outputs oil or the second oil outlet 033 outputs oil.

[0027] There are six oil cylinders 040, and each oil cylinder 040 controls one lobe of the multi-lobe grab bucket respectively. The oil cylinder 040 has an oil cylinder upper chamber 041 and an oil cylinder lower chamber 042, and a piston is arranged between the oil cylinder upper chamber 041 and the oil cylinder lower chamber 042.

[0028] The oil pump ...

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Abstract

The invention discloses a hydraulic control system with a multisegment grab, comprising an oil pump, a reversing valve and a plurality of oil cylinders, wherein the reversing valve comprises an oil inlet, a first oil outlet and a second oil outlet, the oil pump is connected with the oil inlet through a first check valve pipeline, the first oil outlet and the second oil outlet are respectively in pipeline connection with an oil cylinder lower cavity and an oil cylinder upper cavity through a third check valve and a second check valve, the oil cylinder lower cavity and the oil cylinder upper cavity are respectively in pipeline connection with an external oil tank through a first hydraulic control check valve and a second hydraulic control check valve, the first oil outlet is respectively pipeline connection with an upper pressure port and a lower pressure port of the second hydraulic control check valve as well as an upper pressure port and a lower pressure port of the first hydraulic control check valve, the second oil outlet is respectively pipeline connection with the upper pressure port and the lower pressure port of the first hydraulic control check valve as well as the upper pressure port and the lower pressure port of the second hydraulic control check valve, and a throttle valve is also arranged between the oil cylinder upper cavity and the second hydraulic control check valve. Because the invention adopts the reversing valve and the throttle valve, the oil pump does not need to change a rotational direction, and the grab can fully and firmly grasp an object to be grasped, therefore, the working efficiency of the grab is enhanced.

Description

technical field [0001] The invention belongs to the technical field of lifting loading and unloading equipment, and relates to a hydraulic control system, in particular to a hydraulic control system of a multi-lobe grab bucket. Background technique [0002] According to the driving mode, the grab can be divided into two categories: hydraulic grab and mechanical grab. [0003] The electro-hydraulic multi-lobe grab is a hydraulic grab that can replace manpower in various harsh environments for bulk cargo loading and unloading such as mineral powder, fertilizer, grain, and coal. [0004] The work of the electro-hydraulic multi-lobe grab mainly depends on the release and grabbing of the grab. [0005] The working steps of grab release: when the oil pump rotates forward, the oil in the oil tank enters the pump through the check valve, the oil discharges into the pipeline, enters the bottom of the oil cylinder through the check valve, pushes the piston upward, and the oil returne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C3/16F15B11/16
Inventor 王淦纯李斌陈琮诗高建中
Owner SHANGHAI ELECTRICAL HYDRAULICS & PNEUMATICS
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