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Synchronous valve block of bucket wheel machine tail

A technology of synchronous valve and bucket wheel machine, which is applied in the direction of mechanical equipment, servo motor components, fluid pressure actuators, etc., can solve the problems of poor synchronization accuracy, twisted and deformed tail car bracket, and inability to work, so as to reduce the flow adjustment gain, The effect of improving adjustment accuracy and synchronous accuracy

Inactive Publication Date: 2012-11-28
SHAOYANG VICTOR HYDRAULICS
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  • Summary
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AI Technical Summary

Problems solved by technology

[0002] At present, there is such a defect in the hydraulic system of the tail car of the bucket wheel machine: when the two hydraulic cylinders of the tail car are descending, they use the common flow synchronization circuit, and the synchronization accuracy is very poor. In the worst case, it can only reach about 5%, resulting in The tail car bracket is seriously distorted and deformed or even unable to work. If the volume synchronization loop or servo closed-loop control synchronization loop is used, the synchronization accuracy will be greatly improved, but the cost is too expensive for users to accept

Method used

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  • Synchronous valve block of bucket wheel machine tail
  • Synchronous valve block of bucket wheel machine tail

Examples

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Embodiment 1

[0008] Embodiment 1: as figure 2 Shown: the synchronous valve group of the tail car of the bucket wheel machine is made up of throttle valve 1.1, 1.2, 1.3, 1.4, balance valve 2 and an integrated block for assembling these valves. When it is necessary to drive the load to rise, the oil enters from the P port. On the one hand, it enters the rodless cavity of the throttle valve 1.3 and throttle valve 1.1 to the hydraulic cylinder 3.1 through the check valve of the balance valve; on the other hand, the oil passes through the balance valve. The check valve of the valve enters the rodless chamber of the throttle valve 1.4, and the throttle valve 1.2 to the hydraulic cylinder 3.2. At this time, the adjustment synchronization mainly relies on the throttle valve 1.3 and the throttle valve 1.4 to play a role, and the balance valve 2 only plays the role of a one-way valve. Because it drives the load to rise, the pressure difference between the front and back of the two throttle valves i...

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Abstract

The invention relates to a synchronous valve block of a bucket wheel machine tail. The synchronous valve block mainly comprises four throttle valves and a balance valve. By setting the balance valve at an outlet of the throttle valve, enough back pressure is established at the outlet, the flow regulation gain of the throttle valve is reduced, the regulation precision is improved, the synchronous precision of double cylinders of the tail is improved by 50%, the problem that the bucket wheel machine tail is asynchronous is well solved, and the safety and reliability of the tail for ascending and descending can be greatly improved.

Description

technical field [0001] The invention relates to a synchronous valve group of a tail car of a bucket wheel machine. Background technique [0002] At present, there is such a defect in the hydraulic system of the tail car of the bucket wheel machine: when the two hydraulic cylinders of the tail car are descending, they use the common flow synchronization circuit, and the synchronization accuracy is very poor. In the worst case, it can only reach about 5%, resulting in The tail car bracket is seriously distorted and deformed, and even cannot work. If a volume synchronization loop or a servo closed-loop control synchronization loop is used, the synchronization accuracy will be greatly improved, but the cost is too expensive for users to accept. Contents of the invention [0003] The purpose of the present invention is to design a synchronous valve group of the tail car of the bucket wheel machine which improves the synchronous precision of the two hydraulic cylinders. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 王更生粟武洪
Owner SHAOYANG VICTOR HYDRAULICS
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