CN104074836A - High speed hydraulic cylinder buffer mechanism - Google Patents
High speed hydraulic cylinder buffer mechanism Download PDFInfo
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- CN104074836A CN104074836A CN201410303202.3A CN201410303202A CN104074836A CN 104074836 A CN104074836 A CN 104074836A CN 201410303202 A CN201410303202 A CN 201410303202A CN 104074836 A CN104074836 A CN 104074836A
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- piston
- hydraulic cylinder
- high speed
- speed hydraulic
- buffer
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Abstract
The invention discloses a high speed hydraulic cylinder buffer mechanism. The high speed hydraulic cylinder buffer mechanism is installed in a cylinder barrel (6) of a high speed hydraulic cylinder. The high speed hydraulic cylinder buffer mechanism comprises a piston rod (2), a buffer piston (3), an elastic device and a piston (5), wherein the buffer piston (3) sleeves the piston rod (2), and the piston rod (2), the buffer piston (3), the elastic device and the piston (5) form a buffer chamber (7). The high speed hydraulic cylinder buffer mechanism can achieve buffer braking of the high speed hydraulic cylinder, resists high pressure impact, can not influence reliability of sealing pieces, and greatly improves life of the high speed hydraulic cylinder.
Description
Technical field
The invention belongs to hydraulic machinery technical field, particularly a kind of high speed hydraulic cylinder damping mechanism.
Background technique
The movement velocity of high speed hydraulic cylinder piston is very high, can produce strong impact, collision and vibration at piston stroke end, causes damage of components, must carry out suitable buffer-braking.At present, the buffering method of oil hydraulic cylinder mainly contains two kinds: the one, and oil hydraulic cylinder external buffer, controls in loop and increases throttle control device at oil hydraulic cylinder, by changing orifice size, cushions; Another kind is oil hydraulic cylinder internal damping, in oil hydraulic cylinder inside, buffer structure is set and cushions, and has the advantages such as simple in structure, reliable operation, shock-absorbing capacity be good.Expert works out the buffering device of high speed hydraulic cylinder of high speed hydraulic cylinder and the dull and stereotyped throttle buffering structure of step buffer structure.Above-mentioned buffer structure all arranges buffer plunger on hydraulic cylinder piston, and cushion hole is set on cylinder cap.In buffering course, plunger enters cushion hole is squeezed cushion hole inner fluid, and pressure raises so that plugging power to be provided rapidly.The major defect of above-mentioned buffer structure is that cushion hole is connected with piston or piston rod seal component, and during speed buffering, plunger is stronger to the squeezing action of cushion hole inner fluid, causes oil liquid pressure too high, affects the reliability of Sealing.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of high speed hydraulic cylinder piston type damping mechanism, and the isolation of the buffer cavity of this damping mechanism and Sealing, can not affect the reliability of Sealing at high pressure resistant impact.
A high speed hydraulic cylinder damping mechanism, is arranged in the cylinder barrel of high speed hydraulic cylinder, comprises piston rod, damper piston, elastic device and piston, and damper piston is sleeved on piston rod, and piston rod, damper piston, elastic device and piston form buffer cavity.
As the further improvement of technique scheme, described damper piston is positioned at the position being connected with piston near piston rod.
As the further improvement of technique scheme, described damper piston has base and tapered flanges, and tapered flanges is pointed to piston.
As further improving again of technique scheme, described elastic device is spring, is sleeved on piston rod, between damper piston and piston.
High speed hydraulic cylinder piston type damping mechanism of the present invention, can realize the buffer-braking of high speed hydraulic cylinder, high pressure resistant impact, can not affect the reliability of Sealing, the working life of greatly having improved high speed hydraulic cylinder.
Accompanying drawing explanation
Fig. 1 is high speed hydraulic cylinder piston type damping mechanism structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, a kind of high speed hydraulic cylinder piston type damping mechanism structure that the present invention is proposed is elaborated.
As shown in Figure 1, be arranged in the cylinder barrel 6 of high speed hydraulic cylinder, comprise piston rod 2, damper piston 3, spring 4 and piston 5, damper piston 3 is sleeved on piston rod 2, and damper piston 3 has base and tapered flanges, and tapered flanges is pointed to piston 5.Damper piston 3 is positioned at the position being connected with piston 5 near piston rod 2.Piston rod 2, damper piston 3, elastic device and piston 5 form buffer cavity 7.Spring 4, is sleeved on piston rod 2, between damper piston 3 and piston 5.
In hydraulic cylinder works process, piston 5 travels forward together with damper piston 3, and piston 5 and damper piston 3 are without relative movement, and buffer cavity 7 oil liquid pressures are identical with oil back chamber oil liquid pressure.In buffering course, first damper piston 3 stops with hydraulic cylinder end cover 1 collision.Because damper piston 3 quality are very little, therefore kinetic energy is little, can not cause judder and end cap 1 to damage.Afterwards, piston 5 moves forward, and the fluid in buffer cavity 7 is subject to the squeezing action of piston 5, from the gap between the tapered flange of damper piston 3 and piston inner wall, flow out, form throttle effect, this causes the pressure of buffer cavity 7 inner fluids sharply to raise, and provides plugging power to piston 5.When spring 4 guarantees hydraulic cylinder works damper piston 3 with piston 5 in separated state and play auxiliary buffer function.
Claims (4)
1. a high speed hydraulic cylinder damping mechanism, it is characterized in that: be arranged in the cylinder barrel (6) of high speed hydraulic cylinder, comprise piston rod (2), damper piston (3), elastic device and piston (5), it is upper that damper piston (3) is sleeved on piston rod (2), and piston rod (2), damper piston (3), elastic device and piston (5) form buffer cavity (7).
2. high speed hydraulic cylinder damping mechanism according to claim 1, is characterized in that: described damper piston (3) is positioned at the position being connected with piston (5) near piston rod (2).
3. high speed hydraulic cylinder damping mechanism according to claim 2, is characterized in that: described damper piston (3) has base and tapered flanges, and tapered flanges is pointed to piston (5).
4. according to the high speed hydraulic cylinder damping mechanism described in claim 1,2 or 3, it is characterized in that: described elastic device is spring (4), be sleeved on piston rod (2) upper, be positioned between damper piston (3) and piston (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303202.3A CN104074836A (en) | 2014-06-30 | 2014-06-30 | High speed hydraulic cylinder buffer mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303202.3A CN104074836A (en) | 2014-06-30 | 2014-06-30 | High speed hydraulic cylinder buffer mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104074836A true CN104074836A (en) | 2014-10-01 |
Family
ID=51596352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410303202.3A Pending CN104074836A (en) | 2014-06-30 | 2014-06-30 | High speed hydraulic cylinder buffer mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104074836A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298978A (en) * | 2015-11-20 | 2016-02-03 | 常州海宏液压设备有限公司 | Tensile force floating buffering vertical mill hydraulic oil cylinder |
| CN107084169A (en) * | 2017-06-22 | 2017-08-22 | 南通爱慕希机械股份有限公司 | A kind of ram cylinder |
| CN107299922A (en) * | 2017-08-03 | 2017-10-27 | 安徽科海压缩机制造有限公司 | A kind of buffering hydraulic cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5673206A (en) * | 1979-11-19 | 1981-06-17 | Shiyoukuu:Kk | Pneumatic cylinder equipped with shock absorber |
| US4907495A (en) * | 1986-04-30 | 1990-03-13 | Sumio Sugahara | Pneumatic cylinder with integral concentric hydraulic cylinder-type axially compact brake |
| CN201554719U (en) * | 2009-11-13 | 2010-08-18 | 浙江工业大学 | High-speed two-out bar hydraulic cylinder cushion device |
| CN102155457A (en) * | 2010-07-23 | 2011-08-17 | 三一重工股份有限公司 | Hydraulic oil cylinder, hydraulic buffering system, excavator and concrete pump truck |
| CN203948383U (en) * | 2014-06-30 | 2014-11-19 | 南京蒙福液压机械有限公司 | A kind of high speed hydraulic cylinder damping mechanism |
-
2014
- 2014-06-30 CN CN201410303202.3A patent/CN104074836A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5673206A (en) * | 1979-11-19 | 1981-06-17 | Shiyoukuu:Kk | Pneumatic cylinder equipped with shock absorber |
| US4907495A (en) * | 1986-04-30 | 1990-03-13 | Sumio Sugahara | Pneumatic cylinder with integral concentric hydraulic cylinder-type axially compact brake |
| CN201554719U (en) * | 2009-11-13 | 2010-08-18 | 浙江工业大学 | High-speed two-out bar hydraulic cylinder cushion device |
| CN102155457A (en) * | 2010-07-23 | 2011-08-17 | 三一重工股份有限公司 | Hydraulic oil cylinder, hydraulic buffering system, excavator and concrete pump truck |
| CN203948383U (en) * | 2014-06-30 | 2014-11-19 | 南京蒙福液压机械有限公司 | A kind of high speed hydraulic cylinder damping mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298978A (en) * | 2015-11-20 | 2016-02-03 | 常州海宏液压设备有限公司 | Tensile force floating buffering vertical mill hydraulic oil cylinder |
| CN107084169A (en) * | 2017-06-22 | 2017-08-22 | 南通爱慕希机械股份有限公司 | A kind of ram cylinder |
| CN107299922A (en) * | 2017-08-03 | 2017-10-27 | 安徽科海压缩机制造有限公司 | A kind of buffering hydraulic cylinder |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141001 |