CN101913086B - Leak-free hydraulic system of mobile workbench - Google Patents

Leak-free hydraulic system of mobile workbench Download PDF

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Publication number
CN101913086B
CN101913086B CN 201010229099 CN201010229099A CN101913086B CN 101913086 B CN101913086 B CN 101913086B CN 201010229099 CN201010229099 CN 201010229099 CN 201010229099 A CN201010229099 A CN 201010229099A CN 101913086 B CN101913086 B CN 101913086B
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CN
China
Prior art keywords
valve
oil
check valve
hydraulic
leak
Prior art date
Application number
CN 201010229099
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Chinese (zh)
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CN101913086A (en
Inventor
袁隆秀
Original Assignee
合肥合锻机床股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 合肥合锻机床股份有限公司 filed Critical 合肥合锻机床股份有限公司
Priority to CN 201010229099 priority Critical patent/CN101913086B/en
Publication of CN101913086A publication Critical patent/CN101913086A/en
Application granted granted Critical
Publication of CN101913086B publication Critical patent/CN101913086B/en

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Abstract

The invention discloses a leak-free hydraulic system of a mobile workbench. The system comprises an oil pump motor set, a safety overflow valve, a one-way valve, an electromagnetic reversing valve with positioning, a stacked hydraulic control one-way valve and a stacked dual one-way throttle valve, wherein the stacked dual one-way throttle valve is connected with a clamping cylinder; two oil inlets of the stacked hydraulic control one-way valve are connected with the oil outlet of the electromagnetic reversing valve with positioning; and the oil inlet of the electromagnetic reversing valve is connected with an oil tank. The mobile workbench is tightly fixed on a main machine so as to ensure that the workbench is not loosened by a die withdrawing force to affect the quality of a product when a die is lifted and returned.

Description

A kind of leak-free hydraulic system of travelling table
Technical field
The present invention relates to leak free travelling table hydraulic system, the travelling table that is applied in large-scale single action hydraulic sheet metal drawing press of more specifically saying so promotes the hydraulic system in the clamping device.
Background technology
At present known in big-and-middle-sized single action hydraulic sheet metal drawing press; Leakage phenomenon often appears in the travelling table hydraulic system, and build-up of pressure descends like this, and loosening phenomenon can appear in travelling table; So system will constantly carry out ftercompction, locate all the time and fastening state to keep workbench.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point; A kind of leak-free hydraulic system of travelling table is provided; Can make clamping cylinder remain pressure stable; Travelling table being fixed on the main frame tightly, thereby guarantee mould in the process of molding backhaul, can not make workbench loosening and not influence the quality of product because the withdrawing pattern power that produces.
Technical scheme of the present invention is following:
A kind of leak-free hydraulic system of travelling table; The solenoid directional control valve, stacking type hydraulic control check valve, the superposing type Double throttle check valve that comprise Oil pump electrical machinery group, safety overflow valve, check valve, band location; The superposing type Double throttle check valve is connected with clamping cylinder; Two oil-ins of stacking type hydraulic control check valve, oil-in links to each other with the oil-out of the solenoid directional control valve of band location, and the oil-in of solenoid directional control valve is connected with fuel tank.
The oil-out place of described pump motor group is provided with oil filter.
Described superposing type Double throttle check valve and clamping cylinder be connected that electricity connects the installation electro connecting pressure gauge in the pipeline.
Hydraulic system is separated with main system; Adopt one to overlap independently system; Mainly, formed no leakage fluid hydraulic circuit by solenoid directional control valve, stacking type hydraulic control check valve, the superposing type Double throttle check valve of Oil pump electrical machinery group, safety overflow valve, check valve, band location.Come the solenoid directional control valve of oil during work in the pump, open stacking type hydraulic control check valve, get into the rod end chamber of clamping cylinder through the superposing type Double throttle check valve through the band location; After the rod end chamber of clamping cylinder produces certain pressure; Stacking type hydraulic control check valve is closely closed, and piston rod moves downward like this, fastens travelling table on sill; For guaranteeing that two hydraulic control one-way valves can close when the solenoid directional control valve meta reliably, the A of valve, B mouth must be connected with fuel tank.This hydraulic system pressure good stability can not leak for a long time.
Compared with present technology, beneficial effect of the present invention is embodied in:
The present invention is with leak-free hydraulic system; Be used in the travelling table hydraulic system of large-scale single action hydraulic sheet metal drawing press; Can make clamping cylinder remain pressure stable; Travelling table being fixed on the main frame tightly, thereby guarantee mould in the process of molding backhaul, can not make workbench loosening and not influence the quality of product because the withdrawing pattern power that produces.
Description of drawings
Fig. 1 is a conduit under fluid pressure system schematic of the present invention.
The specific embodiment
Referring to accompanying drawing, the leak-free hydraulic system of travelling table of the present invention, hydraulic system is separated with main system; Adopt one to overlap independently system, by solenoid directional control valve (5), stacking type hydraulic control check valve (4), the superposing type Double throttle check valve (3) of Oil pump electrical machinery group (9), safety overflow valve (6), check valve (7), band location, clamping cylinder (2) has been formed no leakage fluid hydraulic circuit; The electricity that is connected in the pipeline of superposing type Double throttle check valve (3) and clamping cylinder (2) connects electro connecting pressure gauge (1) is installed; Come the solenoid directional control valve (5) of oil during work in the pump, open stacking type hydraulic control check valve (4), get into the rod end chamber of clamping cylinder (2) through superposing type Double throttle check valve (3) through the band location; After the rod end chamber of clamping cylinder produces certain pressure; Stacking type hydraulic control check valve is closely closed, and piston rod moves downward like this, fastens travelling table on sill; For guaranteeing that two hydraulic control one-way valves can close when the solenoid directional control valve meta reliably, the A of valve, B mouth must be connected with fuel tank.This hydraulic system pressure good stability can not leak for a long time.In the travelling table fixed hydraulic system of large hydraulic press; Make clamping cylinder remain pressure stable; On the travelling table sill that is fixed on main frame tightly; Thereby guarantee mould in the process of molding backhaul, can not influence the quality of product because travelling table is become flexible the withdrawing pattern power that produces.

Claims (3)

1. the leak-free hydraulic system of a travelling table; The solenoid directional control valve, stacking type hydraulic control check valve, the superposing type Double throttle check valve that comprise Oil pump electrical machinery group, safety overflow valve, check valve, band location; It is characterized in that: the superposing type Double throttle check valve is connected with clamping cylinder; Stacking type hydraulic control check valve has two oil-ins, and the oil-in of stacking type hydraulic control check valve links to each other with the oil-out of the solenoid directional control valve of band location, and the oil-in of the solenoid directional control valve of band location is connected with fuel tank.
2. according to the leak-free hydraulic system of the said travelling table of claim 1, it is characterized in that: the oil-out place of described Oil pump electrical machinery group is provided with oil filter.
3. according to the leak-free hydraulic system of the said travelling table of claim 1, it is characterized in that: described superposing type Double throttle check valve and clamping cylinder be connected that electricity connects the installation electro connecting pressure gauge in the pipeline.
CN 201010229099 2010-07-14 2010-07-14 Leak-free hydraulic system of mobile workbench CN101913086B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010229099 CN101913086B (en) 2010-07-14 2010-07-14 Leak-free hydraulic system of mobile workbench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010229099 CN101913086B (en) 2010-07-14 2010-07-14 Leak-free hydraulic system of mobile workbench

Publications (2)

Publication Number Publication Date
CN101913086A CN101913086A (en) 2010-12-15
CN101913086B true CN101913086B (en) 2012-07-18

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Application Number Title Priority Date Filing Date
CN 201010229099 CN101913086B (en) 2010-07-14 2010-07-14 Leak-free hydraulic system of mobile workbench

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102615328A (en) * 2012-04-09 2012-08-01 莱州市山普管件制造有限公司 Supporting plate sliding device
CN103144346B (en) * 2013-02-06 2015-05-27 合肥合锻机床股份有限公司 Driving device and method for movable working table of press, and press
CN104006015A (en) * 2014-05-22 2014-08-27 南通东海机床制造有限公司 Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine
CN105156396B (en) * 2015-09-22 2017-11-14 广东易山重工股份有限公司 A kind of sweeping machine dust suction moving system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101134372A (en) * 2006-08-31 2008-03-05 天津市天锻压力机有限公司 Energy-saving thin plate hydraulic drawing press
CN101318293A (en) * 2008-07-08 2008-12-10 宁波恒力液压机械制造有限公司 Workbench of hydraulic drawing press for sheet
CN201471163U (en) * 2009-06-16 2010-05-19 南通市腾达锻压机床厂 Lifting and pressing device for moving working table of stretching forming hydraulic press machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101134372A (en) * 2006-08-31 2008-03-05 天津市天锻压力机有限公司 Energy-saving thin plate hydraulic drawing press
CN101318293A (en) * 2008-07-08 2008-12-10 宁波恒力液压机械制造有限公司 Workbench of hydraulic drawing press for sheet
CN201471163U (en) * 2009-06-16 2010-05-19 南通市腾达锻压机床厂 Lifting and pressing device for moving working table of stretching forming hydraulic press machine

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Address after: 230601 Hefei economic and Technological Development Zone, Anhui, Ziyun

Patentee after: Hefei forging intelligent manufacturing Limited by Share Ltd

Address before: 230601 Hefei economic and Technological Development Zone, Anhui, Ziyun

Patentee before: Hefei Metalforming Machine Tool Co., Ltd.

C56 Change in the name or address of the patentee