Front and back lifting hydraulic system for energy-saving forging manipulator

A forging manipulator and hydraulic system technology, applied in forging/pressing/hammer device, forging/pressing/hammering machinery, mechanical equipment, etc., can solve the problems of synchronous drive and energy waste, and improve speed and energy saving , synchronous control for simple effects

Inactive Publication Date: 2012-10-31
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of synchronous drive and energy waste of the existing front and rear lifting systems of forging manipulators, the purpose of the present invention is to provide an energy-saving hydraulic system for front and rear lifting of forging manipulators

Method used

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  • Front and back lifting hydraulic system for energy-saving forging manipulator

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and examples of implementation.

[0013] Such as figure 1 As shown, the P port of the symmetrical proportional directional valve 3 of the present invention is connected with the P port of the asymmetrical proportional directional valve 4, the oil supply port 1, and the P port of the pilot electromagnetic directional valve 11; the A port of the symmetrical proportional directional valve 3 It is connected with port A of asymmetrical proportional directional valve 4 and the inlet of hydraulic control check valve 10, port B of symmetrical proportional directional valve 3 is blocked; port T of symmetrical proportional directional valve 3 is connected with port T of asymmetrical proportional directional valve 4 , Oil source return port 2, T port of pilot solenoid directional valve 11, T port of upper chamber electromagnetic directional valve 5, outlet of lower chamber safety va...

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Abstract

The invention discloses a front and back lifting hydraulic system for an energy-saving forging manipulator. The front and back lifting hydraulic system consists of an oil source supply port, a symmetrical proportion directional valve, an asymmetrical proportion directional valve, two electromagnetic directional valves, two safety valves, two one-way valves, a hydraulic one-way valve, four lifting cylinders and an oil source return port, wherein the two electromagnetic directional valves are used for selecting bearing hydraulic cylinders through switching. According to the invention, aiming at forging manipulator lifting system with rigidly synchronous piston rods of four hydraulic cylinders, two proportion directional vlaves are connected in parallel for driving by adopting a manner that the hydraulic cylinders are connected in parallel for concentrative control, so that the synchronous control is simple. The switching of the electromagnetic directional valves of the system can select the number of the bearing hydraulic cylinders, realizes the switching of heavy-load driving and fast driving modes, can effectively improve the fastness and energy-saving property of the system in light load on the premise of ensuring the heavy load capability of the system.

Description

technical field [0001] The invention relates to a lifting hydraulic system of a forging manipulator, in particular to an energy-saving forging manipulator front and rear lifting hydraulic system. Background technique [0002] The forging manipulator is used to clamp and control the movement of the workpiece to cooperate with the forging action of the forging press. The movement of the tongs in the vertical direction is driven by the lifting system of the forging manipulator. The front and rear lifting systems of the current forging manipulator are mostly driven independently, which is not conducive to synchronous control and energy saving. [0003] The Chinese invention patent with the application number 200910055222.2 announced a new configuration of forging manipulator with rigid synchronization of the front and rear lifting systems, which can reduce the difficulty of coordinated control of the front and rear lifting systems. However, if the hydraulic system of the front a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/10F15B11/22
Inventor 周华侯交义傅新杨华勇
Owner ZHEJIANG UNIV
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