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Hydraulic Gravity Balance Control System

A gravity balance and control system technology, applied in fluid pressure actuating devices, manufacturing tools, maintenance and safety accessories, etc., can solve the problems of sudden changes in the pressure of the balance circuit, large processing errors, pressure fluctuations, etc., to reduce flow pressure, reduce Small response burden, small size effect

Active Publication Date: 2018-08-31
SUZHOU CHENNA AUTOMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the set pressures of the pressure reducing valve and the relief valve cannot be very close, the pressure of the balance circuit changes suddenly during the upward and downward process, and a large-scale pressure fluctuation occurs, and the load of the linear drive part changes suddenly, resulting in a large processing error.

Method used

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  • Hydraulic Gravity Balance Control System

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] Such as figure 1 The hydraulic gravity balance control system includes a hydraulic control circuit, the hydraulic control circuit is connected with a balance cylinder 9, the hydraulic control circuit is provided with an oil inlet, and the oil inlet is connected with the input end of the pressure reducing valve. At the same time, the output end of the decompression valve is connected to the input end of the two-position three-way reversing valve 3, and the output end of the two-position three-way reversing valve 3 is connected in parallel with the pilot-operated three-way decompression valve 4 and the hydraulic control check valve 5 . Moreover, the output end of th...

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Abstract

The invention relates to a hydraulic gravity balance control system. The hydraulic gravity balance control system comprises a pressure reducing valve, a two-position three-way reversing valve, a pilot three-way pressure reducing valve, a hydraulic control one-way valve, a pressure meter, an energy storer, a check valve and a balance oil cylinder. The pilot three-way pressure reducing valve and the hydraulic control one-way valve are connected in parallel; the energy storer is positioned behind the liquid control one-way valve; the reversing valve and the pressure reducing valve are positioned in front of the hydraulic control one-way valve; and multiple axial oil holes are formed in a piston in the balance cylinder. The hydraulic gravity balance control system has the functions of upper pressure reduction, lower overflow and power failure protection, is stable in reversing, low in flow and fast in speed, and in particular, is suitable for gravity balance of a vertical shaft of a gantry machining center.

Description

technical field [0001] The invention relates to a control circuit and structure of a hydraulic gravity balance cylinder, which is especially suitable for the gravity balance of the vertical axis of a gantry type machining center. Background technique [0002] The gravity balance methods of the vertical axis of the gantry type machining center mainly include mechanical weight balance, hydraulic balance cylinder balance and pneumatic balance cylinder balance. Among them, the hydraulic balance cylinder is balanced. Due to the high pressure and stable balance force, it is especially suitable for the gravity balance of the vertical axis of the heavy-duty gantry type machining center. [0003] The traditional hydraulic gravity balance cylinder control circuit adopts a combination of a single pressure reducing valve and a single overflow valve, that is, the setting pressure of the pressure reducing valve is guaranteed to be slightly lower than the setting pressure of the relief val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q11/00F15B1/02F15B11/08
CPCB23Q11/0032F15B1/021F15B11/08
Inventor 陈耀龙张朋海
Owner SUZHOU CHENNA AUTOMATION TECH CO LTD
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