CN103821789B - The passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings - Google Patents
The passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings Download PDFInfo
- Publication number
- CN103821789B CN103821789B CN201310587613.5A CN201310587613A CN103821789B CN 103821789 B CN103821789 B CN 103821789B CN 201310587613 A CN201310587613 A CN 201310587613A CN 103821789 B CN103821789 B CN 103821789B
- Authority
- CN
- China
- Prior art keywords
- piston
- shaft
- inner chamber
- cylinder
- cylinder body
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
- F16F9/483—Arrangements for providing different damping effects at different parts of the stroke characterised by giving a particular shape to the cylinder, e.g. conical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/20—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with the piston-rod extending through both ends of the cylinder, e.g. constant-volume dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
- F16F9/466—Throttling control, i.e. regulation of flow passage geometry
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The present invention relates to oil hydraulic cylinder field, the passive oil hydraulic cylinder of the totally-enclosed many speed bufferings of one disclosed by the invention, comprise cylinder body, end cap, piston shaft and piston, described end cap is connected with cylinder body opening end is airtight, cylinder is filled with hydraulic oil, and described piston shaft is coaxially connected in series the both ends of the surface of cylinder body, and described piston sleeve is connected on piston shaft, described inner chamber of cylinder block comprises the trip segment of multistage different inner diameters, and it is clearance fit state that described piston moves with each trip segment in cylinder body; Described piston shaft one end is quill shaft, and quill shaft is provided with at least two through holes makes quill shaft inner chamber and inner chamber of cylinder block be UNICOM's state, and described at least two through holes are arranged at the left and right sides of piston respectively; Described quill shaft inner chamber is connected with adjusting screw rod, and the head through hole aperture stretched on the right side of quill shaft inner chamber and piston of adjusting screw rod is Partial Blocking state.
Description
Technical field
The present invention relates to oil hydraulic cylinder field, be specifically related to the passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings.
Background technique
Hydraulic buffer is widely used in the fields such as the keying automatic control system of automobile, elevator, hoist and high-lift pump, hydraulic buffer principle of the prior art is subject to external impacts when axle center and drives the hydraulic oil of pipe in piston press, discharged by the oil drainage hole of interior pipe after hydraulic oil pressurized, the hydraulic oil of simultaneously being discharged by interior pipe is also back to interior pipe by the spill port of interior pipe; When external force disappears, the action that piston rebounds initial point wait next time by spring.The shortcoming of this buffer is: (1), within the scope of whole buffering and return stroke, piston keeps lower speed always, and the speed of buffering is non-adjustable; (2) buffer speed is single, and buffer speed is non-adjustable, and the impact force to oil hydraulic cylinder of buffering moment is large, easily causes damage to cylinder.
Summary of the invention
For solving deficiency of the prior art, the object of the present invention is to provide a kind of many speed bufferings, buffer speed is adjustable, the simple passive oil hydraulic cylinder of structure.
The technological scheme that the present invention takes is:
The passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings, comprise cylinder body, end cap, piston shaft and piston, described end cap is connected with cylinder body opening end is airtight, cylinder is filled with hydraulic oil, described piston shaft is coaxially connected in series the both ends of the surface of cylinder body, and described piston sleeve is connected on piston shaft, it is characterized in that, described inner chamber of cylinder block comprises the trip segment of multistage different inner diameters, and it is clearance fit state that described piston moves with each trip segment in cylinder body.
Further, described adjacent stroke is intersegmental connects through conical surface transition section.
Further, described piston shaft one end is quill shaft, and quill shaft is provided with at least two through holes makes quill shaft inner chamber and inner chamber of cylinder block be UNICOM's state, and described at least two through holes are arranged at the left and right sides of piston respectively.
Further, described quill shaft inner chamber is connected with adjusting screw rod, and the head through hole aperture stretched on the right side of quill shaft inner chamber and piston of adjusting screw rod is Partial Blocking state.
Further, the joint of described piston shaft and cylinder body and end cap is provided with seal ring.
Again further, described piston outer ring is provided with piston packing.
After taking above technological scheme, beneficial effect of the present invention is:
(1) oil hydraulic cylinder is provided with the trip segment of multistage different inner diameters, difference Spielpassung between piston and each trip segment, and gap length is relevant to the internal diameter of each trip segment, gap is larger, the hydraulic oil UNICOM speed of piston both sides is faster, and piston is obstructed less, and passive travelling speed is faster; Otherwise gap is less, piston is obstructed larger, and the passive travelling speed of piston is slower, realizes multiple speed section buffering with this, makes buffering more level and smooth, reduces the impact that piston shaft is suffered in buffering course.
(2) the adjacent stroke of different inner diameters is intersegmental arranges conical surface transition section, prevents velocity jump and the impact caused or detonation, has both extended the physical life of oil hydraulic cylinder, and avoided again the generation of noise.
(3) piston shaft takes one end hollow design, the both sides of piston are provided with the through hole of UNICOM's piston shaft inner chamber and hydraulic cylinder intracoelomic cavity, form low speed oil drain passage, adjusting screw rod is connected in piston shaft, by the through hole on the head blocking right side of adjusting screw rod, whole low speed oil extraction speed is carried out in the effective oil extraction cross section reducing right side through hole, thus the travelling speed of adjustment piston.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: end cap 1, cylinder body 2, piston shaft 3, piston 4, left through hole 5, right through hole 6, adjusting screw rod 7, seal ring 8, at a slow speed section 9, changeover portion 10, quick fraction 11.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described:
The passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings comprises end cap 1, cylinder body 2, piston shaft 3, piston 4, left through hole 5, right through hole 6, adjusting screw rod 7, seal ring 8, low speed segment 9, changeover portion 10, quick fraction 11 as shown in the figure.Described end cap 1 is connected with cylinder body 2 left side is airtight, hydraulic oil is full of in cylinder body 2, described piston shaft 3 is coaxially serially connected with cylinder body 2 and end cap 1, seal ring 8 is provided with between piston shaft 3 and cylinder body 2 and end cap 1, described piston 4 is fixed on piston shaft 3, piston 4 is connected with inboard wall of cylinder block through seal ring, the section at a slow speed 9 that described inner chamber of cylinder block is divided into internal diameter different and quick fraction 11, through conical surface transition section 10 smooth connection between described section at a slow speed 9 and quick fraction 11, piston 4 coordinates with the inwall small―gap suture of section 9 at a slow speed, and piston 4 coordinates with changeover portion 10 and quick fraction 11 wide arc gap; Described piston shaft 3 one end is quill shaft, and the outer surface of quill shaft is provided with the more than one left through hole 5 of UNICOM's cylinder body 2 inner chamber and piston shaft 3 inner chamber and more than one right through hole 6, and described left through hole 5 and right through hole 6 are arranged at the left and right sides of piston 4 respectively; Piston shaft 3 inner chamber is provided with internal thread, described adjusting screw rod 7 outside thread is connected with the screw-internal thread fit of piston shaft 3, the left end of adjusting screw rod 7 screws in piston shaft 3 inner chamber to right through hole 6 place, described adjusting screw rod 7 stretches into the adjustable length in piston shaft 3, adjust it stretch into length in piston shaft by rotating adjusting screw rod 7, adjusting screw rod head blocks the degree in the aperture of right through hole 6, reaches the size regulating oil circuit, thus regulates buffer speed.
When piston 4 is positioned at quick fraction 11, when piston shaft 3 is by power left, piston shaft 3 pulls piston 4 to move to left, and has comparatively wide arc gap between the inwall of piston 4 and quick fraction 11, hydraulic oil on the left of piston 4 is through gap and left through hole 5 to quick oil-discharging on the right side of piston, and piston 4 is moved to the left fast; When piston 4 moves to changeover portion 10, between piston 4 and changeover portion 10 inwall, gap reduces gradually, and the hydraulic oil on the left of piston 4 slows down on the right side of piston through gap and left through hole 5 oil extraction, and the resistance on piston increases gradually, and piston 4 travelling speed lowers; When piston 4 moves to low speed segment 9, between piston 4 with low speed segment 9 inwall, small―gap suture coordinates, and the hydraulic oil on the left of piston 4 slowly flows on the right side of piston through left through hole 5 substantially, and piston 4 slowly moves to left until move to the high order end of cylinder body 2 by resistance strengthens.In whole movement process, piston shaft 3 is first fast moving under the control of oil hydraulic cylinder, then movement of slowing down, last slowly mobile, completes buffering.
When piston 4 is positioned at section 9 at a slow speed, when piston shaft 3 is by power to the right, piston shaft 3 drives piston 4 to move to the right, and the hydraulic oil on the right side of piston 4 is successively through the slow oil extraction on the left of piston of right through hole 6, piston shaft inner chamber, left through hole 5, and piston 4 slowly moves to right at low speed segment 9; Piston 4 moves to changeover portion 10, and between piston 4 and changeover portion 10 inwall, gap increases gradually, and the hydraulic oil on the right side of piston 4 accelerates flowing on the left of piston through gap and left through hole 6, and piston 4 reduces gradually by flowed friction, and piston movement speed is accelerated; When piston 4 moves to quick fraction 11, the hydraulic oil on the right side of piston 4 is flowed left fast by the gap between piston and quick fraction 11 swimmingly, and piston 4 moves right fast.In whole process, piston is first slowly mobile, accelerates to move to be reset to the rightmost side after completing buffering again.
Claims (4)
1. the passive oil hydraulic cylinder of totally-enclosed many speed bufferings, comprise cylinder body, end cap, piston shaft and piston, described end cap is connected with cylinder body opening end is airtight, cylinder is filled with hydraulic oil, described piston shaft is coaxially connected in series the both ends of the surface of cylinder body, and described piston sleeve is connected on piston shaft, it is characterized in that, described inner chamber of cylinder block comprises the trip segment of multistage different inner diameters, and it is clearance fit state that described piston moves with each trip segment in cylinder body; Described piston shaft one end is quill shaft, and quill shaft is provided with at least two through holes makes quill shaft inner chamber and inner chamber of cylinder block be UNICOM's state, and described at least two through holes are arranged at the left and right sides of piston respectively; Described quill shaft inner chamber is connected with adjusting screw rod, and the head through hole aperture stretched on the right side of quill shaft inner chamber and piston of adjusting screw rod is Partial Blocking state.
2. the passive oil hydraulic cylinder of the totally-enclosed many speed bufferings of one according to claim 1, it is characterized in that, the adjacent stroke of the trip segment of described multistage different inner diameters is intersegmental to be connected through conical surface transition section.
3. the passive oil hydraulic cylinder of the totally-enclosed many speed bufferings of one according to claim 1, it is characterized in that, the joint of described piston shaft and cylinder body and end cap is provided with seal ring.
4. the passive oil hydraulic cylinder of the totally-enclosed many speed bufferings of one according to claim 1, it is characterized in that, described piston outer ring is provided with piston packing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587613.5A CN103821789B (en) | 2013-11-21 | 2013-11-21 | The passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings |
| PCT/CN2013/088526 WO2015074296A1 (en) | 2013-11-21 | 2013-12-04 | Full-closed multi-speed buffering driven hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587613.5A CN103821789B (en) | 2013-11-21 | 2013-11-21 | The passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821789A CN103821789A (en) | 2014-05-28 |
| CN103821789B true CN103821789B (en) | 2015-12-30 |
Family
ID=50757016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310587613.5A Expired - Fee Related CN103821789B (en) | 2013-11-21 | 2013-11-21 | The passive oil hydraulic cylinder of a kind of totally-enclosed many speed bufferings |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103821789B (en) |
| WO (1) | WO2015074296A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297823B (en) * | 2018-10-31 | 2021-06-01 | 山东科技大学 | Test device and test method for simulating progressive damage of mining rock mass |
| CN113586641B (en) * | 2020-04-30 | 2022-10-18 | 比亚迪股份有限公司 | Shock absorber and vehicle |
| CN114738350B (en) * | 2022-06-10 | 2022-08-09 | 迪非液压科技江苏有限公司 | High-pressure large-flow hydraulic equipment with self-adaptive buffering function |
| CN116181875B (en) * | 2023-03-10 | 2024-07-12 | 烟台南工大环球智能装备有限公司 | Indexing speed reducing mechanism of hydraulic turntable |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2931218A (en) * | 1957-05-23 | 1960-04-05 | Gen Dynamics Corp | Controlled actuator |
| US4048905A (en) * | 1976-03-29 | 1977-09-20 | The Boeing Company | Variable orifice hydraulic snubber |
| JPS5438475A (en) * | 1977-08-30 | 1979-03-23 | Nippon Telegr & Teleph Corp <Ntt> | Damper |
| JP3570619B2 (en) * | 1999-11-15 | 2004-09-29 | 株式会社ナブコ | Air cylinder device for artificial legs |
| DE19961019C1 (en) * | 1999-12-17 | 2001-02-22 | Grammer Ag | Drive device for automobile adjustable component e.g. headrest, has pyrotechnic charge detonated for displacement of piston of piston-cylinder setting device |
| CN2908909Y (en) * | 2006-04-12 | 2007-06-06 | 张冠华 | Hydraulic buffer with reducing cylinder |
| CN101509533B (en) * | 2009-03-27 | 2010-11-03 | 江苏振龙减震器有限公司 | Damp and rigidity adjustable front damper of motorcycle |
| CN102562707B (en) * | 2012-03-26 | 2015-02-25 | 南通久久液压机械制造有限公司 | Compact buffering cylinder |
| CN202756521U (en) * | 2012-08-24 | 2013-02-27 | 天纳克（北京）汽车减振器有限公司 | Hydraulic recovery and cushion shock absorber |
| CN103075570B (en) * | 2013-01-29 | 2015-08-26 | 河海大学常州校区 | Valve buffer |
| CN203670343U (en) * | 2013-11-21 | 2014-06-25 | 周明泉 | Totally-enclosed multispeed driven buffer hydraulic cylinder |
-
2013
- 2013-11-21 CN CN201310587613.5A patent/CN103821789B/en not_active Expired - Fee Related
- 2013-12-04 WO PCT/CN2013/088526 patent/WO2015074296A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN103821789A (en) | 2014-05-28 |
| WO2015074296A1 (en) | 2015-05-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20181121 |