Unlock instant, AI-driven research and patent intelligence for your innovation.

Extension system and method of boom oil cylinder

A technology of outrigger cylinder and boom, which is applied in the field of boom outrigger cylinder extension, and can solve the problems that the free switching between differential and non-differential can not be realized, and the working conditions that cannot meet the large load of the outrigger of the truck crane, etc. , to achieve the effect of increasing the speed

Inactive Publication Date: 2020-02-14
XUZHOU HEAVY MASCH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a system and method for extending the boom oil cylinder to solve the above-mentioned working conditions that cannot meet the large load of the truck crane boom caused by the prior art, and cannot realize differential and non-differential The defect of freely switching between

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Extension system and method of boom oil cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0026] The first aspect: if figure 1 Disclosed is a jib outrigger oil cylinder extending system, including a first oil port 8, a second oil port 9 and a telescopic oil cylinder 6, the first oil port 8 is sequentially connected to the A oil port, the C oil port, and the A1 oil port , the rodless chamber oil port of the telescopic oil cylinder 6, the second oil port 9 is connected successively, B oil port, D oil port, B1 oil port, and the rod chamber oil port of the telescopic oil cylinder 6, and the first oil port 8 A differential valve 7 is provided between the second oil port 9 .

[0027] The differential valve 7 includes an electromagnetic reversing valve 1, a hydraulic reversing valve 2, and a one-way valve 4. The right side of the electromagn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an extension system of a boom oil cylinder. The system comprises a first oil port, a second oil port and a telescopic oil cylinder, wherein the first oil port is connected withan oil port A, an oil port C, an oil port A1 and a rodless oil port of the telescopic oil cylinder sequentially; the second oil port is connected with an oil port B, an oil port D, an oil port B1 anda rod oil port of the telescopic oil cylinder sequentially; and a differential valve is arranged between the first oil port and the second oil port. The invention further discloses an extension method of the boom oil cylinder. The rapid boom extension system retains the existing telescopic boom mode, can adapt to the conditions of small-angle arm extension and difficult arm extension of the boom,has the function of rapid boom extension, adapts to rapid movement of the telescopic oil cylinder with no load and less load, and increases boom speed.

Description

technical field [0001] The invention relates to a method for extending a lifting arm oil cylinder and belongs to the technical field. Background technique [0002] The extension speed of the boom is an important performance index of the truck crane. The current extension method of the telescopic cylinder of the boom of the truck crane is: the high-pressure oil provided by the hydraulic pump enters the rodless cavity of the telescopic cylinder, pushes the cylinder to extend, and has a rod. The hydraulic oil in the cavity is directly returned to the oil tank. The extension speed of the boom extension cylinder is determined by the flow rate of the pump and the cylinder-free area of ​​the telescopic cylinder. When the telescopic oil cylinder is stretched out with no load or with a small load, the stretching pressure is not high, and the maximum working capacity of the engine cannot be exerted, which limits the improvement of the boom stretching speed. [0003] At present, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/693B66C13/20
CPCB66C13/20B66C23/705
Inventor 曹立峰焦国旺袁丛林杜建西
Owner XUZHOU HEAVY MASCH CO LTD