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Internal recycle balance pressure oil cylinder

A technology of balancing pressure and internal circulation, which is applied in the field of hydraulic devices, can solve the problems that hydraulic cylinders cannot work independently, and achieve the effects of simple structure, high sensitivity, and convenient debugging and installation

Inactive Publication Date: 2011-09-21
汉川数控机床股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be said that none of the existing hydraulic cylinders can work independently and must be controlled by the control system, and this hydraulic device is not suitable for all occasions, such as the thermal deformation stress relief of rigid components

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing.

[0015] like Figure 1 to Figure 5 As shown, the internal circulation balance pressure oil cylinder device of the present invention is composed of a double-acting oil cylinder assembly, two check valves 1 and 8, and two relief valves 5 and 6. The double-acting oil cylinder assembly includes an oil cylinder body 3 and a piston 2 and a piston rod 21, the two ends of the piston rod 21 protrude from the end caps at both ends of the oil cylinder body 3 respectively, the piston 2 is located in the middle of the piston rod 21 and the oil cylinder body 3 is divided into two left and right oil chambers 31 and 32, the left and right The oil chamber 32 is connected with a one-way valve 8 and a relief valve 6, and the right oil chamber 31 is connected with a one-way valve 1 and a relief valve 5, and the oil inlet of the relief valve 5 communicates with the oil chamber 31, and the overfl...

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Abstract

The invention discloses an internal recycle balance pressure oil cylinder which is composed of a dual-effect oil cylinder assembly, two check valves and two overflow valves, wherein the dual-effect oil cylinder assembly comprises an oil cylinder body, a piston and a piston rod; two end heads of the piston rod respectively extend out of end covers at two ends of the oil cylinder body; the piston is positioned at the middle of the piston rod and divides the oil cylinder into two oil chambers; the oil chambers at two sides are respectively connected with one check valve and one overflow valve; the oil inlets of the two overflow valves are respectively communicated with the oil chambers at the two sides; and the oil outlet of the overflow valve at one side is communicated with the oil inlet of the overflow valve at the other side. The oil cylinder is mainly used for releasing the stress generated by expansion and contraction of a rigid connecting body in a precision machine tool, has a damping characteristic of starting under certain pressure, and has the advantages that the motion trace amount and the flexibility are very high, the structure is simple and practical, the cost is low, and the oil cylinder is convenient to modulate and install.

Description

technical field [0001] The invention relates to a hydraulic device, in particular to an internal circulation pressure balancing oil cylinder. Background technique [0002] In the design of existing machine tools, hydraulic cylinders and associated hydraulic control systems are indispensable. Usually, a hydraulic cylinder installed on a machine tool must be connected to a relevant hydraulic control system. The hydraulic cylinder is only an actuator of the hydraulic device. The control system matched with the hydraulic cylinder includes oil tanks, oil pumps, valves and pipelines, etc., the pressure The flow rate, flow rate and flow direction of the oil must be controlled by the control system to ensure the normal operation of the hydraulic cylinder, thereby driving the workpiece connected to it to move or rotate accurately. It can be said that none of the existing hydraulic cylinders can work independently and must be controlled by the control system, and this hydraulic devic...

Claims

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Application Information

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IPC IPC(8): F15B15/08F15B15/20
Inventor 田宏阳朱坤孙向玲徐波余清华潘少平方雄文樊柱孙正宏
Owner 汉川数控机床股份公司
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