CN102192213B - Internal recycle balance pressure oil cylinder - Google Patents
Internal recycle balance pressure oil cylinder Download PDFInfo
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- CN102192213B CN102192213B CN201110139195.4A CN201110139195A CN102192213B CN 102192213 B CN102192213 B CN 102192213B CN 201110139195 A CN201110139195 A CN 201110139195A CN 102192213 B CN102192213 B CN 102192213B
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- oil
- oil cylinder
- cylinder
- piston rod
- piston
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Abstract
The invention discloses an internal recycle balance pressure oil cylinder which is composed of a dual-effect oil cylinder assembly, two check valves and two overflow valves, wherein the dual-effect oil cylinder assembly comprises an oil cylinder body, a piston and a piston rod; two end heads of the piston rod respectively extend out of end covers at two ends of the oil cylinder body; the piston is positioned at the middle of the piston rod and divides the oil cylinder into two oil chambers; the oil chambers at two sides are respectively connected with one check valve and one overflow valve; the oil inlets of the two overflow valves are respectively communicated with the oil chambers at the two sides; and the oil outlet of the overflow valve at one side is communicated with the oil inlet of the overflow valve at the other side. The oil cylinder is mainly used for releasing the stress generated by expansion and contraction of a rigid connecting body in a precision machine tool, has a damping characteristic of starting under certain pressure, and has the advantages that the motion trace amount and the flexibility are very high, the structure is simple and practical, the cost is low, and the oil cylinder is convenient to modulate and install.
Description
Technical field
The present invention relates to a kind of hydraulic pressure installation, particularly a kind of oil cylinder of inner circulation type balance pressure.
Background technique
In existing machine tool design, the hydraulic control system of oil hydraulic cylinder and associated is indispensable.Conventionally, the a certain oil hydraulic cylinder being arranged on lathe must be connected with relevant hydraulic control system, oil hydraulic cylinder is an executive component of hydraulic pressure installation, the control system supporting with oil hydraulic cylinder includes fuel tank, oil pump, valve and pipeline etc., the flow velocity of pressure oil, flow and the flow direction all will be controlled by control system, can guarantee the normal work of oil hydraulic cylinder, thereby drive the workpiece being attached thereto that displacement accurately or rotation occur.Can say, existing oil hydraulic cylinder all can not work alone, and must be controlled by control system, and this hydraulic pressure installation is not applicable to all occasions, for example the thermal distortion stress relief occasion of rigid member.
Summary of the invention
The object of the present invention is to provide a kind of interior circulation balanced pressure oil cylinder, it has under certain pressure opens automatically, by the fluid internal circulation system in cylinder body, reach pressure balance, and there is two-way function function, can solve the stress relief problem that in precision machine tool, rigid connector produces because expanding with heat and contract with cold.
The technological scheme that realizes above-mentioned purpose is: a kind of interior circulation balanced pressure oil cylinder, it is by a two-way cylinder assembly, two one-way valves, two relief valves form, described two-way cylinder assembly comprises a cylinder body, a piston and a piston rod, piston rod two ends is stretched out respectively the end cap at cylinder body two ends, piston is positioned at the neutral position of piston rod and oil cylinder is divided into two oil pockets, the oil pocket on both sides is respectively connected with an one-way valve and a relief valve, the filler opening of two relief valves is communicated with the oil pocket on both sides respectively, the oil outlet of relief valve is communicated with the filler opening of another side relief valve on one side.
As the improvement of above-mentioned technology, the oil pocket on described both sides is respectively connected with a set of oil pocket pressure trimming assembly, and the air and the trace that are used for getting rid of in oil pocket are adjusted the pressure in oil pocket.
This device is mainly used in discharging the stress that in precision machine tool, rigid connection body produces because expanding with heat and contract with cold.Cylinder body is fixed on relatively static pedestal, and one end of piston rod is connected with rigid connection body stress relief position, and the other end is free end.Before work, first by two one-way valves, two oil pockets are filled with to pressure oil, then carry out exhaust and trace adjustment by pressure trimming assembly, make the pressure balance in the oil pocket of both sides, piston is the central authorities in oil cylinder stroke generally.During work, if when being connected to the stress of the rigid connection body of piston rod right-hand member and being thrust, this thrust is passed to the left chamber of oil cylinder by piston rod, when the pressure of left oil pocket reaches setting value, the relief valve on it will be opened, and fluid flows into the right chamber of oil cylinder by the intercommunication oil pipe between the relief valve of two of left and right, now, the pressure rise of right cavity of cylinder also reaches the right and left pressure balance, like this, causes that the stress deformation thrust of lathe rigid connection body is just released because expanding with heat and contract with cold; In like manner, when the stress of piston rod acceptance is pulling force, pulling force is passed to right cavity of cylinder by piston rod, when power reaches certain value, the relief valve being connected with right cavity of cylinder is opened, and piston rod moves to right, and fluid flows into the left chamber of oil cylinder, the pressure rise in the left chamber of oil cylinder also makes two oil pockets in left and right reach pressure balance, and pulling force is released.
Left and right two oil pockets balance pressure value by relief valve, determined, the cracking pressure of relief valve has determined the external force that cylinder system can bear.This device has the damping characteristic of opening under certain pressure, and its motion trace and sensitivity are very high, and it is applied to the stress deformation occasion of various rigid connection bodies, and it is simple in structure, practical, with low cost, and adjustment and installation is convenient.
Accompanying drawing explanation
Fig. 1 is schematic diagram of structure of the present invention.
Fig. 2 is the plan view of one embodiment of the present of invention.
Fig. 3 is left view embodiment illustrated in fig. 2.
Fig. 4 is the B-B sectional view of Fig. 3.
Fig. 5 is the A-A sectional view of Fig. 2.
In figure: 1,8. one-way valve, 2. piston, 21. piston rods, 3. cylinder body, 31. right cavitys, 32. left cavitys, 4,7. pressure trimming assembly, 5,6. relief valve.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 1 to 5, in the present invention, circulation balanced pressure oil cylinder device is by a two-way cylinder assembly, two one- way valves 1 and 8, two relief valves 5 and 6 form, two-way cylinder assembly comprises a cylinder body 3, a piston 2 and a piston rod 21, piston rod 21 two ends are stretched out respectively the end cap at cylinder body 3 two ends, piston 2 is positioned at the neutral position of piston rod 21 and cylinder body 3 is divided into two of left and right oil pocket 31 and 32, left oil pocket 32 is connected with an one-way valve 8 and a relief valve 6, right oil pocket 31 is connected with an one-way valve 1 and a relief valve 5, the filler opening of relief valve 5 is communicated with oil pocket 31, the filler opening of relief valve 6 is communicated with oil pocket 32, the filler opening of the oil outlet of relief valve 6 and relief valve 5 is communicated with, the filler opening of the oil outlet of relief valve 5 and relief valve 6 is communicated with.In the present embodiment, the oil pocket 31 and 32 on both sides is respectively connected with a set of oil pocket pressure trimming assembly 4 and 7, and air and trace that trimming assembly 4 and 7 is used for getting rid of in oil pocket are adjusted the pressure in oil pocket.
Claims (2)
1. circulation balanced pressure oil cylinder device in a kind, for discharging the stress that precision machine tool rigid connection body produces because expanding with heat and contract with cold, it is characterized in that: it is by a two-way cylinder assembly, two one-way valves, two relief valves form, described two-way cylinder assembly comprises a cylinder body, a piston and a piston rod, piston rod two ends is stretched out respectively the end cap at cylinder body two ends, piston is positioned at the neutral position of piston rod and oil cylinder is divided into two oil pockets, the oil pocket on both sides is respectively connected with an one-way valve and a relief valve, the filler opening of two relief valves is communicated with the oil pocket on both sides respectively, the oil outlet of relief valve is communicated with the filler opening of another side relief valve on one side.
2. according to cylinder apparatus claimed in claim 1, it is characterized in that: the oil pocket on described both sides is respectively connected with a set of oil pocket pressure trimming assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139195.4A CN102192213B (en) | 2011-05-21 | 2011-05-21 | Internal recycle balance pressure oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139195.4A CN102192213B (en) | 2011-05-21 | 2011-05-21 | Internal recycle balance pressure oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102192213A CN102192213A (en) | 2011-09-21 |
| CN102192213B true CN102192213B (en) | 2014-04-16 |
Family
ID=44600896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110139195.4A Expired - Fee Related CN102192213B (en) | 2011-05-21 | 2011-05-21 | Internal recycle balance pressure oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102192213B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221514A (en) * | 2015-09-29 | 2016-01-06 | 中国船舶重工集团公司第七一九研究所 | A kind of integrated hydraulic cylinder with bidirection press safety protection |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105404316A (en) * | 2015-12-21 | 2016-03-16 | 四川大学 | Array type position attitude fine tuning method |
| CN106870468B (en) * | 2017-03-20 | 2019-01-18 | 姜永达 | Hydraulic positive/negative-pressure interpreter |
| CN108663150A (en) * | 2018-05-10 | 2018-10-16 | 温州大学 | A kind of novel cold-heading power force measuring method and the device for measuring force with this method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3233739A1 (en) * | 1981-10-01 | 1983-04-21 | Hoerbiger Ventilwerke AG, 1110 Wien | Device for automatically returning an actuating cylinder |
| DE29609698U1 (en) * | 1996-05-31 | 1996-09-26 | Oil Control Gmbh | Hydraulic rapid shift for hydraulically operated telescopic crane booms |
| CN2709691Y (en) * | 2004-06-29 | 2005-07-13 | 北汽福田汽车股份有限公司 | Autoprotection large speed ratio hydraulic cylinder |
| CN101050780A (en) * | 2006-04-05 | 2007-10-10 | 吴应琼 | Hydraulic oil cylinder and its using method |
| CN101059694A (en) * | 2007-06-05 | 2007-10-24 | 西北工业大学 | Friction welding machine closed loop control device |
| CN201653713U (en) * | 2010-03-28 | 2010-11-24 | 荆州恒盛汽车系统有限公司 | Hydraulic device for power steering gear abrasion test |
| CN202091286U (en) * | 2011-05-21 | 2011-12-28 | 汉川机床集团有限公司 | Internal-circulation balanced pressure oil cylinder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060207247A1 (en) * | 2005-03-18 | 2006-09-21 | Smc Kabushiki Kaisha | Actuator |
| CN201827172U (en) * | 2010-07-30 | 2011-05-11 | 伊卡露斯(苏州)车辆系统有限公司 | Supercharging latching hydraulic buffer system |
-
2011
- 2011-05-21 CN CN201110139195.4A patent/CN102192213B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3233739A1 (en) * | 1981-10-01 | 1983-04-21 | Hoerbiger Ventilwerke AG, 1110 Wien | Device for automatically returning an actuating cylinder |
| DE29609698U1 (en) * | 1996-05-31 | 1996-09-26 | Oil Control Gmbh | Hydraulic rapid shift for hydraulically operated telescopic crane booms |
| CN2709691Y (en) * | 2004-06-29 | 2005-07-13 | 北汽福田汽车股份有限公司 | Autoprotection large speed ratio hydraulic cylinder |
| CN101050780A (en) * | 2006-04-05 | 2007-10-10 | 吴应琼 | Hydraulic oil cylinder and its using method |
| CN101059694A (en) * | 2007-06-05 | 2007-10-24 | 西北工业大学 | Friction welding machine closed loop control device |
| CN201653713U (en) * | 2010-03-28 | 2010-11-24 | 荆州恒盛汽车系统有限公司 | Hydraulic device for power steering gear abrasion test |
| CN202091286U (en) * | 2011-05-21 | 2011-12-28 | 汉川机床集团有限公司 | Internal-circulation balanced pressure oil cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221514A (en) * | 2015-09-29 | 2016-01-06 | 中国船舶重工集团公司第七一九研究所 | A kind of integrated hydraulic cylinder with bidirection press safety protection |
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|---|---|
| CN102192213A (en) | 2011-09-21 |
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