CN202707672U - Fast-low speed combined oil cylinder - Google Patents

Fast-low speed combined oil cylinder Download PDF

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Publication number
CN202707672U
CN202707672U CN 201220243327 CN201220243327U CN202707672U CN 202707672 U CN202707672 U CN 202707672U CN 201220243327 CN201220243327 CN 201220243327 CN 201220243327 U CN201220243327 U CN 201220243327U CN 202707672 U CN202707672 U CN 202707672U
Authority
CN
China
Prior art keywords
oil cylinder
low pressure
communicated
fast
oil
Prior art date
Application number
CN 201220243327
Other languages
Chinese (zh)
Inventor
王朝林
Original Assignee
山西高行液压股份有限公司
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Filing date
Publication date
Application filed by 山西高行液压股份有限公司 filed Critical 山西高行液压股份有限公司
Priority to CN 201220243327 priority Critical patent/CN202707672U/en
Application granted granted Critical
Publication of CN202707672U publication Critical patent/CN202707672U/en

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Abstract

A fast-low speed combined oil cylinder comprises an oil cylinder seat, an oil cylinder and a piston rod positioned in the oil cylinder. The core space of the piston rod is a low pressure oil chamber for controlling the piston rod to rapidly advance and retreat, the oil cylinder seat is fixedly connected with a rapid plunger, the front portion of the rapid plunger is extended into the low pressure oil chamber, the rapid plunger is provided with a center aperture, the center aperture is the oil inlet and outlet of the low pressure oil chamber, the center aperture is communicated with an oil tank through a three-way pipeline, and the third port of the three-way pipeline is communicated with the low pressure oil chamber through a sequence valve. According to the utility model, the fast-low speed combined oil cylinder is provided with the plunger communicated with the piston chamber of the oil cylinder, the piston chamber is applied as the low pressure oil chamber which enables the piston to extend out and reset rapidly, the oil cylinder rapidly moves in an auxiliary stroke, the power output of the oil cylinder is guaranteed in a work stroke, complete automatic transition in the whole process is achieved, no stroke restriction is generated, control is simple, and the installed power of the equipment is greatly reduced.

Description

Fast combined oil cylinder at a slow speed
Technical field
The utility model relates to a kind of cylinder apparatus, is specially a kind of cylinder apparatus that is constituted by fast at a slow speed two group oil cylinders.
Background technique
At present not load under a lot of operating modes when oil cylinder is worked, only having partial journey is the load stroke, be that oil cylinder can be divided into load stroke and auxiliary stroke two-part in whole stroke, when oil cylinder during in the load stroke, be in the acting state, so speed is slower, and very little because of load when being in auxiliary stroke, in order to improve the oil cylinder working efficiency, wish the oil cylinder quick acting this moment.In order to realize oil cylinder gear shifting operation under the above-mentioned different operating mode, prior art has proposed two kinds of solutions, and the one, adopt variable displacement pump to adapt to the variable-speed operation under the different operating modes; The 2nd, adopt big or small pump compound mode.This two schemes all consumes relatively high power to a certain extent, and the control more complicated; Cost is very high.Chinese patent 200910223169 disclosed a kind of " double-cylinder serial hydrocylinder of pressure and speed variable ", by two pistons (bar) and large and small cylinder chamber and narrow chamber are set in same cylinder tube, the quick low voltage of realization small piston ejects and resets, and the at a slow speed high pressure of large piston ejects and resets.Or by control system so that small piston (bar) is realized first quick low voltage ejects, high pressure ejects at a slow speed again, perhaps first at a slow speed high pressure eject the pressure and speed variable ejecting function that ejects of quick low voltage again.The pressure and speed variable ejecting oil cylinder structure of this structure is comparatively complicated, and the control oil inlet and outlet is many, and the control and the changing valve that need are many, and cost is also high.
Summary of the invention
The utility model is for the deficiency that above-mentioned prior art exists, and designed a kind of soon combined oil cylinder at a slow speed, realized that oil cylinder adopts the low power consumption of different motion speed, low-cost problem under two kinds of different operating modes of full load and low load.
A kind of soon combined oil cylinder at a slow speed of the present utility model, comprise oil cylinder seat, cylinder tube and the piston rod that places in the cylinder tube, it is characterized in that described piston rod cavity is the low pressure oil pocket of control piston bar fast advance and retreat, be fixed with quick plunger at oil cylinder seat, the front portion of described quick plunger is stretched in the low pressure oil pocket, and on the plunger center hole is arranged fast, this center hole is the turnover oilhole of low pressure oil pocket, it is communicated with fuel tank by triplate line, and another port of described triplate line is communicated with pressure oil cavity through sequence valve.
Described soon combined oil cylinder at a slow speed, the fuel tank pipeline that is communicated with the center oilhole wherein is communicated with fuel tank by selector valve.
Described soon combined oil cylinder at a slow speed, selector valve wherein is three position four-way directional control valve.
Fast at a slow speed combined oil cylinder of the present utility model is by arranging a plunger that is communicated with the oil cylinder piston chamber, with piston cavity as piston is stretched out and the low pressure oil pocket that resets fast, so that oil cylinder energy rapid movement when auxiliary stroke, and can guarantee the output of its power during to working stroke, and whole process is automatically conversion all, without travel limits; Control is simple, has significantly reduced the installed power of equipment.This product is through the good result that obtains on probation, and it has realized that the validation of installed power distributes economy and energy-saving benefit highly significant.
Description of drawings
Fig. 1 is fast combined oil cylinder structural representation at a slow speed.
Among the figure, the 1-hydraulic fluid port that resets, 2-reseting cavity, 3-selector valve, 4-pressure oil cavity, 5-liquid-filling valve, 6-implementation of port, 7-center oilhole, 8-sequence valve, the quick plunger of 9-, 10-pressure hydraulic fluid port, 11-low pressure oil pocket, 12-cylinder tube, 13-piston rod, 14-oil cylinder seat.
Embodiment
With reference to accompanying drawing 1, soon combined oil cylinder at a slow speed of the present utility model by oil cylinder seat 14, is fixed on the cylinder tube 12 on the oil cylinder seat and places the piston rod 13 in the cylinder tube to form.Be pressure oil cavity 4 between cylinder tube inner piston rod bottom piston and oil cylinder seat, pouring orifice 6 is opened on oil cylinder seat.Be fixed with quick plunger 9 at base, the inner chamber of piston rod 13 is stretched in the front portion of plunger 9 by piston center hole fast, the inner chamber of described piston rod 13 is low pressure oil pocket 11, be full of pressure oil therebetween, have center hole 7 on the plunger 9 fast, this center hole 7 is the turnover oilhole of low pressure oil pocket 11, and it is communicated with fuel tank by triplate line, and another road of described triplate line is communicated with pressure oil cavity 4 by sequence valve 8.Be provided with a three position four-way directional control valve 3 at the pipeline that is communicated with fuel tank, have pipeline to be communicated with the reseting cavity 2 of piston rod on this selector valve.
Working procedure is as follows:
During F.F., 7 oil-feeds of center oilhole, fluid acts on the quick plunger 9, because quick sectional area of plunger becomes several times less than the master cylinder area, so piston rod can under the effect of quick plunger, advance fast, meanwhile liquid-filling valve 5 through implementation of port 6 to pressure oil cavity 4 topping ups.Low-pressure cavity 11 pressure increase until opening sequence valve 8 when the load of cylinder movement process increases, tank pressure oil enters master cylinder pressure oil cavity 4 through pressure hydraulic fluid port 10, and liquid-filling valve 5 cuts out, piston rod 13 loaded work pieces, increase exponentially because of active area this moment, so active force also increases exponentially; When complete the returning of piston workmanship stroke, to reseting cavity 2 oil-feeds, liquid-filling valve 5 is opened simultaneously through the hydraulic fluid port 1 that resets, because the reseting cavity anchor ring amasss very little, reseat pressure oil can retreat by the pushing piston bar fast in a small amount, and the fluid in the pressure oil cavity is also discharged rapidly, and cylinder piston rod is return the home position fast.

Claims (3)

1. fast combined oil cylinder at a slow speed, comprise oil cylinder seat (14), cylinder tube (12) and place piston rod (13) in the cylinder tube, it is characterized in that described piston rod cavity is the low pressure oil pocket (11) of control piston bar fast advance and retreat, be fixed with quick plunger (9) at oil cylinder seat (14), the front portion of described quick plunger (9) is stretched in the low pressure oil pocket (11), and on the plunger center hole (7) is arranged fast, this center hole is the turnover oilhole of low pressure oil pocket, it is communicated with fuel tank by triplate line, and another road of described triplate line is communicated with pressure oil cavity (4) through sequence valve (8).
2. according to claim 1 soon combined oil cylinder at a slow speed is characterized in that the described fuel tank pipeline that is communicated with center oilhole (7) is communicated with fuel tank by selector valve (3).
3. according to claim 2 soon combined oil cylinder at a slow speed is characterized in that described selector valve (3) is three position four-way directional control valve.
CN 201220243327 2012-05-28 2012-05-28 Fast-low speed combined oil cylinder CN202707672U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220243327 CN202707672U (en) 2012-05-28 2012-05-28 Fast-low speed combined oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220243327 CN202707672U (en) 2012-05-28 2012-05-28 Fast-low speed combined oil cylinder

Publications (1)

Publication Number Publication Date
CN202707672U true CN202707672U (en) 2013-01-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220243327 CN202707672U (en) 2012-05-28 2012-05-28 Fast-low speed combined oil cylinder

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Country Link
CN (1) CN202707672U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103291685A (en) * 2013-05-17 2013-09-11 中国重型机械研究院股份公司 Low-load high speed/heavy-load low speed cylinder
CN104653542A (en) * 2015-03-11 2015-05-27 江苏大道机电科技有限公司 Mold opening and closing oil cylinder structure for large hollow blow molding machine
CN105058456A (en) * 2015-09-05 2015-11-18 衢州台威精工机械有限公司 High-speed cross beam type hydraulic pressure cutting machine with front and back moving function
CN105058475A (en) * 2015-09-05 2015-11-18 衢州台威精工机械有限公司 Beam lifting mechanism for high-speed beam type hydraulic cutting machine
CN105234993A (en) * 2015-09-05 2016-01-13 衢州台威精工机械有限公司 High-speed cross beam type hydraulic cutter
CN105927611A (en) * 2016-07-12 2016-09-07 中国重型机械研究院股份公司 Double-plunger type compound hydraulic cylinder device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103291685A (en) * 2013-05-17 2013-09-11 中国重型机械研究院股份公司 Low-load high speed/heavy-load low speed cylinder
CN103291685B (en) * 2013-05-17 2015-09-16 中国重型机械研究院股份公司 A kind of little load high speed, heavy load low speed cylinder
CN104653542A (en) * 2015-03-11 2015-05-27 江苏大道机电科技有限公司 Mold opening and closing oil cylinder structure for large hollow blow molding machine
CN105058456A (en) * 2015-09-05 2015-11-18 衢州台威精工机械有限公司 High-speed cross beam type hydraulic pressure cutting machine with front and back moving function
CN105058475A (en) * 2015-09-05 2015-11-18 衢州台威精工机械有限公司 Beam lifting mechanism for high-speed beam type hydraulic cutting machine
CN105234993A (en) * 2015-09-05 2016-01-13 衢州台威精工机械有限公司 High-speed cross beam type hydraulic cutter
CN105058456B (en) * 2015-09-05 2017-04-19 衢州台威精工机械有限公司 High-speed cross beam type hydraulic pressure cutting machine with front and back moving function
CN105058475B (en) * 2015-09-05 2017-10-31 衢州台威精工机械有限公司 A kind of cross-rail-elevating mechanism for high speed cross beam type hydraulic cutter
CN105234993B (en) * 2015-09-05 2017-10-31 衢州台威精工机械有限公司 High speed cross beam type hydraulic cutter
CN105927611A (en) * 2016-07-12 2016-09-07 中国重型机械研究院股份公司 Double-plunger type compound hydraulic cylinder device

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