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Hydraulic circuit system for roll gap control of fully hydraulic straightening machine

A hydraulic circuit and straightening machine technology, applied in mechanical equipment and other directions, can solve the problems of high failure rate, low control accuracy, complex control equipment, etc., and achieve the effect of reducing accident rate, improving system rigidity, and improving responsiveness.

Inactive Publication Date: 2011-12-14
DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1
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AI Technical Summary

Problems solved by technology

This kind of control equipment is complicated, the control precision is not high, and the failure rate is high.

Method used

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  • Hydraulic circuit system for roll gap control of fully hydraulic straightening machine
  • Hydraulic circuit system for roll gap control of fully hydraulic straightening machine

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Embodiment Construction

[0018] like figure 1 A hydraulic circuit system for roll gap control of a fully hydraulic leveler in a medium and thick plate hot rolling production line is shown, consisting of four sets of hydraulic circuits. Each set of roll gap control hydraulic circuit is composed of the following components: roll gap control hydraulic cylinder, displacement sensor placed on the upper part of the hydraulic cylinder, hydraulic control valve block, and bladder accumulator. Each set of hydraulic control valve block is composed of two plate-type two-position four-way electromagnetic reversing valves, one plate-type servo valve, three plate-type hydraulic control check valves, one cartridge relief valve and one pressure sensor integrated in one valve block superior. The integrated valve block is located directly above the roll gap control hydraulic cylinder, and is fixed on the straightener frame by bolts. The integrated valve group block is connected with the roll gap control hydraulic cyli...

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Abstract

The invention discloses a hydraulic circuit system for roll gap control of a fully hydraulic straightening machine, which is composed of four sets of hydraulic circuits, and each set of hydraulic circuits includes a roll gap control hydraulic cylinder, a displacement sensor placed on the upper part of the hydraulic cylinder, and a hydraulic control valve. Block and bladder accumulators. Each set of hydraulic valve block is composed of two plate type two position four way electromagnetic reversing valves, one plate type servo valve, three plate type hydraulic check valves, one cartridge relief valve and one pressure sensor integrated on one valve block. The integrated valve group block is located on the upper part of the roll gap control hydraulic cylinder, and is fixed on the straightener frame by bolts. The integrated valve group block is connected with the roll gap control hydraulic cylinder through stainless steel pipes. As an auxiliary power source, the bladder accumulator is connected to the oil supply pipe of the circuit system through stainless steel pipes. The roll gap control hydraulic cylinder is controlled by adjusting the given current value of the proportional electromagnet of the servo valve.

Description

technical field [0001] The invention relates to a hydraulic circuit system for controlling the straightening of steel plates with different thicknesses by a straightening machine of a hot rolling production line for medium and thick plates. Background technique [0002] The roll gap of the fully hydraulic straightening machine is controlled by four hydraulic cylinders located at the four corners of the frame, and four sets of the same hydraulic circuits control each hydraulic cylinder respectively. Each hydraulic cylinder has a displacement sensor, and the displacement of the hydraulic cylinder is detected by the displacement sensor. The traditional hydraulic circuit adopts a hydraulic cylinder and a servo valve block with a boost function, that is, it is controlled by hydraulic components such as a boost cylinder, a one-way valve, a servo valve, and an electromagnetic reversing valve. This kind of control equipment is complicated, the control precision is not high, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D1/02F15B1/02
Inventor 孙万有雷东亮
Owner DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND
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