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Prefill valve mechanism of oil pressure cylinder

A technology of oil pressure cylinder and oil valve, which is applied in the field of full oil valve, and can solve the problems that cannot be applied to high oil pressure machinery

Inactive Publication Date: 2010-08-18
LIEN CHIEH MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the common design of placing the full oil valve outside the upper end of the oil pressure cylinder cannot be applied to high oil pressure machines with large diameter and high pressure cylinders.

Method used

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  • Prefill valve mechanism of oil pressure cylinder
  • Prefill valve mechanism of oil pressure cylinder
  • Prefill valve mechanism of oil pressure cylinder

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Embodiment Construction

[0048] For the full oil valve mechanism of the hydraulic cylinder of the present invention, please refer to image 3 , 4 , 5, including a hydraulic cylinder 3 and a full oil valve 4 installed inside the hydraulic cylinder.

[0049] As shown in the figure, the hydraulic cylinder 3 has a piston 31 inside, the piston 31 can move up and down, and a hydraulic oil inlet and outlet hole 32 is arranged above the piston 31;

[0050] This full oil valve 4 is fixed in the inside of the hydraulic cylinder, and it includes a valve seat 41, a piston 42, a spring seat 43 and a pressure relief rod 44; wherein the valve seat 41 is an annular body with a perforation in the center, which can be Fix it to the inner surface of the hydraulic cylinder after penetrating from the outside of the hydraulic cylinder with screws;

[0051] The lower end of the valve seat 41 is provided with a partition seat 45, and the partition seat 45 is provided with an interval partition 451, and a passage 452 is set...

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PUM

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Abstract

The invention relates to a prefill valve mechanism of an oil pressure cylinder. A prefill valve is arranged on a hydraulic oil inlet and outlet passage of the hydraulic oil cylinder and is used for controlling the inlet and the outlet of the hydraulic oil, wherein the prefill valve is arranged inside a cylinder body of the oil pressure cylinder, and when the movement of a piston of the oil pressure cylinder is stopped for pressurization, strong outward thrust generated by the built-in type prefill valve can be completely born by the cylinder body of the oil pressure cylinder, so the fracture of a locking screw of the prefill valve and even the danger which are caused by overhigh oil pressure are avoided when the prefill valve is arranged at the high-pressure oil pressure cylinder.

Description

technical field [0001] The invention relates to a full oil valve mechanism of an oil hydraulic cylinder, in particular to a full oil valve used for a super large diameter and high pressure oil hydraulic cylinder, which can bear the pressure of the full oil valve due to the cylinder body of the oil hydraulic cylinder itself. The outward thrust generated by the internal pressure can relatively reduce the number of locking screws for the full oil valve to be locked to the hydraulic cylinder, and can increase the safety of use. Background technique [0002] In common hydraulic machines, a control valve for controlling hydraulic oil in and out needs to be installed on the inlet and outlet channels of the hydraulic cylinder, and the control valve is a full oil valve. [0003] Common situations where the hydraulic cylinder is equipped with a full oil valve, such as figure 1 , 2 As shown, the cylinder body of the hydraulic cylinder 1 is provided with a movable piston 11, the upper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B20/00
Inventor 王正雄
Owner LIEN CHIEH MACHINERY