Multi-way valve and tunnel boring machine

A multi-way valve and oil circuit technology, applied in mechanical equipment, fluid pressure actuating devices, servo motor components, etc., can solve problems such as inability to achieve electrical automatic control, easy blocking of slender orifices, and failure of feedback pressure signals. Achieve the effect of realizing electrical automation control, not easy to get stuck, and reducing requirements

Active Publication Date: 2012-06-20
SANY HEAVY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The slender channel is easily blocked, causing the feedback pressure signal to fail
[0007] 3) The multi-way valve adopts manual or hydraulic control mode, which cannot realize electrical automatic control, and the system is complicated

Method used

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  • Multi-way valve and tunnel boring machine
  • Multi-way valve and tunnel boring machine
  • Multi-way valve and tunnel boring machine

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] figure 2 Shown is a hydraulic schematic diagram of a multi-way valve according to an embodiment of the present invention. It should be clear that the multi-way valve can be applied to hydraulic systems of various machines, including but not limited to road heading machines. When applied to a roadheader, the multi-way valve can be used to control the actuators of the roadheader.

[0035] like figure 2 As shown, the multi-way valve of the present inventio...

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Abstract

The invention provides a multi-way valve and a tunnel boring machine. The multi-way valve comprises a main oil inlet, an oil inlet control port, a main oil return port, a main oil drainage port and a plurality of reversing valve groups, wherein the reversing valve groups are used for controlling actuating elements respectively. Each reversing valve group is provided with a pilot-operated reversing valve and an electromagnetic reversing valve. The pilot-operated reversing valve comprises a first oil inlet, a first oil return port and two first working ports, hydraulic oil pumped from the main oil inlet is led into the first oil inlet, and the first working ports are connected with the actuating elements. The electromagnetic reversing valve comprises a second oil inlet, a first oil drainage port and two second working ports, hydraulic oil pumped from the oil inlet control port is led into the second oil inlet, and the second working ports are connected to two ends of the pilot-operated reversing valve to realize reversing thereof. Compared with the prior art, the multi-way valve has the advantages that the requirement to cleanliness of hydraulic oil is low, feedback oil ways are not easy to be blocked, automatic control is easy to realize and the like.

Description

technical field [0001] The invention relates to the field of hydraulic pressure and coal machinery, in particular to a multi-way valve and a roadheader including the multi-way valve. Background technique [0002] The multi-way valve of the roadheader is located between the oil pump of the hydraulic system of the roadheader and multiple actuators, and is used to control the flow direction and flow of hydraulic oil, thereby controlling the action direction and speed of each actuator. [0003] In the prior art, the multi-way valve of the roadheader is mainly a manual proportional multi-way valve or a hydraulically controlled proportional multi-way valve, and this type of multi-way valve is mainly installed in a piece-by-piece manner. figure 1 Shown is a hydraulic schematic diagram of a single-piece valve body of a multi-way valve with an existing structure, and the single-piece valve body can control the two ends E' and F' of the actuator. Each piece of valve body includes pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 陈锷牟东邱兆湘刘宗宏王征峥
Owner SANY HEAVY EQUIP
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