Hydraulic loop system for controlling roll gap of all-hydraulic flattening machine

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

Inactive Publication Date: 2010-05-12
DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1
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  • Abstract
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  • Claims
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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 loop system for controlling roll gap of all-hydraulic flattening machine
  • Hydraulic loop system for controlling roll gap of all-hydraulic flattening machine

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Embodiment Construction

[0018] Such as 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 c...

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Abstract

The invention discloses a hydraulic loop system for controlling roll gap of an all-hydraulic flattening machine, which is composed of four sets of loops. Each set of hydraulic loop contains a roll gap-control hydraulic cylinder, a displacement transducer, hydraulic control valve blocks and a leather bag energy accumulator. Each hydraulic control valve block is integrated on a valve block by two plate-type two-position four-way electromagnetic directional valves, a plate-type servo valve, three plate-type hydraulic one-way valves, a plug-in mounting overflow valve and a pressure transducer. The pile-up valve blocks are positioned on the upper part of the roll gap-control hydraulic cylinder, and are fixed on the rack of the flattening machine by bolts. The pile-up valve blocks are connected with the roll gap-control hydraulic cylinder by stainless steel tubes. The leather bag energy accumulator used as auxiliary power source is connected on the oil supply pipe of the loop system by stainless steel tubes. The roll gap-control hydraulic cylinder is controlled by regulating the ratio of servo valves and the given current value of magnets.

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 Applications(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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