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Variable-speed operating valve

A technology of variable speed control valve and valve body, applied in the direction of components with teeth, belts/chains/gears, mechanical equipment, etc., can solve problems such as large complaints from users, large area, influence on normal operation, etc., to eliminate oil The effect of extravasation failure, simplifying the machining process, and reducing the machining accuracy

Inactive Publication Date: 2020-10-09
LONKING JIANGXI MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the variable speed control valve used in the hydraulic system of the loader, because its oil circuit is exposed on the installation surface, the installation surface is connected with the gearbox case through a paper pad, and after the oil passage is connected to the oil, it mainly relies on the paper pad and the variable speed control valve installation surface Oil seal, because the installation surface area of ​​the transmission control valve is relatively large (242mm*236mm), in practice, there are still some relatively uneven spots on the installation surface of the transmission control valve after finishing, and the pressure oil will leak from the uneven points, causing The oil leakage fault of the transmission control valve has a certain degree of influence on the normal operation, and the user complains a lot

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  • Variable-speed operating valve

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Embodiment Construction

[0007] In order to facilitate a better understanding of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0008] Such as figure 1 shown. In this speed change control valve, return drain oil tanks are respectively set up on the corresponding side or the corresponding periphery of all working pressure oil tanks (or high pressure oil areas) on the installation surface of the valve body. The leaked return drain oil is drained to the corresponding return oil tank nearby.

[0009] The valve body of the variable speed control valve of this embodiment includes an installation wall surface K, and the main working pressure oil tank 2a is respectively opened on the installation wall surface, and the side working pressure oil tank (partial working pressure oil tank) 2b located at a corresponding corner of the valve body, the main return flow Oil tank 4a, partial return oil tank (low pressure oil area or no pressur...

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Abstract

The invention discloses a variable-speed operating valve. The valve comprises a valve body, an installation wall face arranged on the valve body, a plurality of working pressure oil grooves formed inthe installation wall face and a plurality of backflow oil grooves, wherein the installation wall face of the valve body is further provided with return oil grooves corresponding to the working pressure oil grooves, and the return oil grooves are provided with discharge ports connected with the backflow oil grooves correspondingly. The variable-speed operating valve can effectively prevent external leakage, and is good in operation sealing performance and simple and reasonable in structure.

Description

technical field [0001] The invention relates to a construction machine, in particular to a variable speed control valve used in the hydraulic system of the construction machine. Background technique [0002] At present, the variable speed control valve used in the hydraulic system of the loader, because its oil circuit is exposed on the installation surface, the installation surface is connected with the gearbox box through a paper pad, and after the oil passage is connected to the oil, it mainly relies on the paper pad and the variable speed control valve installation surface Oil seal, because the installation surface area of ​​the transmission control valve is relatively large (242mm*236mm), in practice, there are still some relatively uneven spots on the installation surface of the transmission control valve after finishing, and the pressure oil will leak from the uneven points, causing The oil leakage fault of the transmission control valve has a certain degree of influe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/40F16H61/02
CPCF16H61/40F16H61/0265
Inventor 邹爱标邹云斌刘招
Owner LONKING JIANGXI MACHINERY