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Connection method for hydraulic direction control valve of hydraulic machine

A directional control valve and connection method technology, applied in the hydraulic field, can solve the problems of heavy equipment weight, complicated structure, low work efficiency, etc., and achieve the effects of reducing wear, improving machine motion accuracy, and reducing labor intensity.

Inactive Publication Date: 2013-02-20
WUXI YANGGONG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the hydraulic system transmission components of hydraulic presses in the existing shipbuilding field, there are many problems in terms of operation methods, working methods, and complicated structures, which lead to inefficient work, heavy equipment weight, and high costs

Method used

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Effect test

Embodiment Construction

[0010] The method for connecting a hydraulic directional control valve of a hydraulic machine according to an embodiment of the present invention, the main steps of which include:

[0011] ⑴Firstly, choose a water inlet valve and a drain valve, these two valves choose a balanced pressure relief valve, install a small diameter pilot pressure relief valve in the main valve, and the upper chamber of the main valve passes through the small hole opened on the valve cup Connected with the high-pressure liquid outside the valve cup;

[0012] ⑵The valve stem is lifted up by a lever or a cam, the pressure relief valve is opened, and the high-pressure liquid in the upper cavity is quickly discharged through the pressure relief valve port, and the flow area of ​​the water diversion hole is controlled to be 15% of the flow area of ​​the pressure relief valve port, so that from The liquid discharged from the pressure relief valve is more than the liquid replenished through the water divers...

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Abstract

The invention discloses a connection method for a hydraulic direction control valve of a hydraulic machine. A water inlet valve and a water outlet valve are chosen, the two valves choose balanced pressure relief valves, a guide pressure relief valve with a small diameter is arranged in a main valve, and an upper cavity of the main valve is communicated with high pressure liquids outside a valve cup through holes opened in the valve cup; a valve rod is jacked upward by a lever or a cam, the pressure relief valves are opened, high pressure liquids in the upper cavity are discharged rapidly through a pressure relief valve opening, and the open area of a water guide hole is controlled to be 15% of that of the pressure relief valve opening, so that liquids discharged form the pressure relief valve opening is more than liquids complemented by the water guide hole; and the pressure of the upper cavity restrict the on and off of the main valve after pressure relief, and the open area of the water guide hole is increased increasing strokes of the pressure relief valves. The connection method has the advantages that the improvement of machine operation accuracy and the decrease of abrasion conditions are facilitated, the service life is increased, the machine body stress is assisted, and the like.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a method for connecting a hydraulic direction control valve of a hydraulic machine. Background technique [0002] The hydraulic system has the advantages of large power, good adjustability of working pressure and flow, and heat can be brought back to the oil tank. The hydraulic system device can generate more power than other devices. Under the same power, the hydraulic device is small in size, Light weight, high power density, and compact structure; at the same time, the hydraulic device works relatively smoothly. Due to light weight, small inertia, and quick response, the hydraulic device is easy to achieve quick start, braking and frequent reversing. With the continuous development of my country's industry and science and technology, hydraulic transmission technology has been more and more widely used in the automobile industry, shipbuilding industry, power industry, etc., ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 杨龙兴
Owner WUXI YANGGONG MACHINERY MFG
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