Directional valves, load-sensing multiple-way valves, and load-sensing hydraulic systems

A reversing valve, load pressure technology, applied in the direction of fluid pressure actuating device, servo motor assembly, mechanical equipment, etc., can solve the problem of unstable operation of load-sensitive hydraulic system, achieve ideal working performance, small changes, simple structure Effect

Active Publication Date: 2016-04-27
XUZHOU HEAVY MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the technical problem that the load sensitive hydraulic system in the prior art does not work smoothly

Method used

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  • Directional valves, load-sensing multiple-way valves, and load-sensing hydraulic systems
  • Directional valves, load-sensing multiple-way valves, and load-sensing hydraulic systems
  • Directional valves, load-sensing multiple-way valves, and load-sensing hydraulic systems

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Embodiment Construction

[0041] Below you can refer to the accompanying drawings Figure 1 to Figure 7And the content of the text to understand the content of the present invention and the differences between the present invention and the prior art. The technical solution (including the preferred technical solution) of the present invention will be further described in detail below by means of the accompanying drawings and by way of listing some optional embodiments of the present invention. It should be noted that: any technical feature and any technical solution in this embodiment are one or more of a variety of optional technical features or optional technical solutions. Citing all the alternative technical features and alternative technical solutions of the present invention, it is not convenient for the implementation of each technical feature to emphasize that it is one of the optional multiple implementation modes, so those skilled in the art should know that: Replace any technical means provi...

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Abstract

The invention discloses a reversing valve, a load-sensitive multi-way valve and a load-sensitive hydraulic system, and relates to the technical field of engineering machines. The technical problem that in the prior art, a load-sensitive hydraulic system is unstable in working is solved. The reserving valve comprises a valve body and a valve rod arranged in an inner cavity of the valve rod, an oil supply opening, an oil returning oil, a load pressure feedback hole and an oil passing opening are formed in the valve body, a load pressure picking-up oil channel and a filtering oil channel are arranged on the valve rod, the load pressure picking-up oil channel is communicated with the oil returning opening through a filtering oil channel, and when the valve rod slides in the inner cavity of the valve body to the position where the load pressure picking-up oil channel is communicated with the load pressure feedback hole, and the oil passing opening is communicated with the oil supply opening and the load pressure picking-up oil channel. The load-sensitive multi-way valve comprises the reversing valve. The load-sensitive hydraulic system comprises the load-sensitive multi-way valve. According to the reversing valve, the load-sensitive multi-way valve and the load-sensitive hydraulic system, the stability and the working performance of the hydraulic system are improved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a reversing valve, a load-sensitive multi-way valve provided with the reversing valve, and a load-sensitive hydraulic system provided with the load-sensitive multi-way valve. Background technique [0002] The hydraulic system of truck crane mainly includes telescopic system, luffing system, main winch system, auxiliary winch system, and slewing system. When each system works, it needs to move smoothly without impact. The impact will cause the violent swing of the lifting weight, which will bring safety hazards to the crane operation. [0003] At present, domestic medium-tonnage truck cranes usually use load-sensitive hydraulic systems, such as figure 1 shown. The system is composed of load-sensing hydraulic pump 41, load-sensing multi-way valve 42, balance valve 43, hydraulic motor 44 and other components. The load sensitive multi-way valve plays the role of dire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 仲维超王必旺赵瑞学杜孝杰韩建营
Owner XUZHOU HEAVY MASCH CO LTD
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