An anti-shock electromagnetic unloading valve for a straight-arm truck-mounted crane

A truck-mounted crane and anti-shock technology, which is applied to cranes, mechanical equipment, fluid pressure actuators, etc., can solve the problems of large size, small flow capacity, and large reversing impact, and achieve good sealing performance and communication The effect of large flow capacity and downscaling

Active Publication Date: 2017-01-18
XCMG XUZHOU TRUCK MOUNTED CRANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has the disadvantages of large size, small flow capacity, high cost, large reversing impact, high energy consumption and low reliability, and is not suitable for the technical development requirements of the moment limiting system of straight-arm truck-mounted cranes.

Method used

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  • An anti-shock electromagnetic unloading valve for a straight-arm truck-mounted crane
  • An anti-shock electromagnetic unloading valve for a straight-arm truck-mounted crane
  • An anti-shock electromagnetic unloading valve for a straight-arm truck-mounted crane

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Effect test

Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing.

[0015] Such as Figure 2 to Figure 4 As shown, the anti-shock electromagnetic unloading valve of the straight arm truck-mounted crane includes a valve body 8, a first one-way valve 1, a second one-way valve 2, a third one-way valve 3 and an electromagnetic reversing valve 5, The surface of the valve body 8 is provided with the first oil port P1, the second oil port P2, the third oil port P3, the first oil return port T1 and the second oil return port T2, and the valve body 8 is provided with the front oil port P4, The control oil port P5 and the oil port T behind the valve; the first check valve 1, the second check valve 2, and the third check valve 3 respectively communicate with the first oil port P1, the second oil port P2, and the third oil port in one direction. The oil passage from port P3 to the pre-valve port P4, the check valve group composed of the first check va...

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Abstract

The invention discloses an anti-impact electromagnetic unloading valve of a straight-arm lorry-mounted crane. A first oil hole, a second oil hole, a third oil hole, a first oil return hole and a second oil return hole are formed in the surface of a valve body; the valve body is internally provided with a front valve oil hole, a control oil hole and a rear valve oil hole; a first one-way valve, a second one-way valve and a third one-way valve are communicated with the first oil hole, the second oil hole and the third oil hole respectively unidirectionally to reach the oil way of the front valve oil hole; the first one-way valve, the second one-way valve and the third one-way valve jointly form a one-way valve group; two oil ways are formed between the front valve oil hole and the rear valve oil hole, as for the main oil way, the front valve oil hole is communicated with the rear valve oil hole through a hydraulic control one-way valve, and as for the control oil way, the front valve oil hole is communicated with the rear valve oil hole through a first damping hole, a magnetic exchange valve, the control oil hole and a second damping hole, and the rear valve oil hole is directly communicated with the first oil return hole and the second oil return hole. The anti-impact electromagnetic unloading valve has the beneficial effects of small boundary dimension, high flow capacity, low cost, small reversing impact, low energy consumption and high reliability.

Description

technical field [0001] The invention relates to an electromagnetic unloading valve, in particular to an anti-shock electromagnetic unloading valve for a straight-arm truck-mounted crane. Background technique [0002] The straight-arm truck-mounted crane is a multi-action machine installed on the chassis of the car. The boom is extended or retracted through the telescopic oil cylinder of the boom, and the cargo is lifted by the wire rope through the hoisting mechanism. The main actions include luffing, telescopic, and rolling. Lifting and slewing are characterized by fast, flexible, efficient, convenient, and integrated loading, unloading, and transportation. They are widely used in my country, such as municipal construction, coal mine engineering, landscaping, and equipment hoisting and transportation. [0003] In recent years, with the development of market and technology, the lifting capacity of truck-mounted cranes has been continuously improved, and the requirements for t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/62F15B13/06
CPCB66C23/88F15B20/007
Inventor 满军程磊陈磊陈志伟林小波韩文超满珍商晓恒
Owner XCMG XUZHOU TRUCK MOUNTED CRANE
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