CN101539182A - Piston-type hydraulic buffer - Google Patents
Piston-type hydraulic buffer Download PDFInfo
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- CN101539182A CN101539182A CN200910098053A CN200910098053A CN101539182A CN 101539182 A CN101539182 A CN 101539182A CN 200910098053 A CN200910098053 A CN 200910098053A CN 200910098053 A CN200910098053 A CN 200910098053A CN 101539182 A CN101539182 A CN 101539182A
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- plunger
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- cylinder body
- type hydraulic
- hydraulic buffer
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Abstract
The invention belongs to the technical field of buffering devices, and particularly relates to a piston-type hydraulic buffer with small size, comprising an external cylinder base, an external cylinder body, a throttle lever, an oil nozzle, a plunger piston, a plunger piston base, and a plunger piston upper cover; the external cylinder base is provided with the external cylinder body and the throttle lever, and the throttle lever is positioned inside the external cylinder body; the external cylinder body is communicated with the oil nozzle, hydraulic oil is injected into the external cylinder body through the oil nozzle; the interior of the external cylinder body is matched with a sliding-type plunger piston in a sealing way, the lower part of the plunger piston is sealed by the plunger piston base which is provided with an orifice, the throttle lever passes through the orifice in the plunger piston base, and the throttle lever is in variable clearance fit with the plunger piston base; the upper port of the plunger piston is sealed by the plunger piston upper cover; the interior of the plunger piston is provided with a piston ring in a sealed sliding matching way, and the plunger piston is provided with an energy-accumulation device. The piston-type hydraulic buffer solves the technical problems of unstable buffering performance, poor performance repeatability and short service life which are caused by the mixing of oil and gas in the buffering process in the prior art, and simultaneously reduces the structural size of the buffer.
Description
Technical field
The invention belongs to the damping device technical field, the little piston-type hydraulic buffer of especially a kind of size.
Background technique
Hydraulic bjuffer is mainly realized the buffering and the two kinds of functions that reset, and when the object of high speed operation impacted buffer suddenly, by the effect of its throttling and accumulation of energy, the control object slowed down, stop object moving gradually, and realize resetting in the back.
Present hydraulic bjuffer, a kind of hydraulic buffer is disclosed as China Patent No. ZL01207454.3, ZL02281860.X discloses a kind of elevator hydraulic buffer, is divided into two cavitys by the plunger base of plunger end opening, and two cavitys are communicated with by the throttle orifice of plunger base.Because of the cavity of plunger upper part is mixing air (even one-way valve is set, also inevitably exist air in its plunger), in buffering course, oil in the oil pocket of bottom is pressed in the plunger by throttle orifice, and the oil and the already present air that enter in the plunger produce the oil gas mixing phenomena, produce high pressure in moment, impact comparatively obvious, the shock-absorbing capacity instability, the shock-absorbing capacity poor repeatability, working life is low; In addition, existing hydraulic bjuffer height is higher, and like this, it occupies bigger space.
Summary of the invention
The invention provides a kind of piston-type hydraulic buffer, it has solved prior art and exists oil gas to mix in buffering course and cause low technical problem of shock-absorbing capacity instability, performance poor repeatability, working life, simultaneously, has reduced the physical dimension of buffer.
For solving the problems of the technologies described above, the present invention is by the following technical solutions: a kind of piston-type hydraulic buffer, comprise outer shell seat, outer cylinder body, throttling rod, oil nozzle, plunger, plunger base, plunger loam cake, the outer shell seat is installed outer cylinder body and throttling rod, and throttling rod is in the outer cylinder body; Outer cylinder body is communicated with oil nozzle, and hydraulic oil pours in the outer cylinder body by oil nozzle; The sliding type plunger that is sealed and matched in the outer cylinder body, the bottom of plunger is sealed by the plunger base, has throttle orifice on the plunger base, and throttling rod passes the throttle orifice in the plunger base, between the two for becoming Spielpassung; The suitable for reading of plunger sealed by the plunger loam cake; The plunger internal sealed piston ring that is slidingly matched is established an energy storage apparatus on the plunger.
Described piston-type hydraulic buffer, energy storage apparatus are spring, and spring is in the plunger, and upper and lower end attachment post respectively covers and piston ring beyond the Great Wall.
Described piston-type hydraulic buffer, energy storage apparatus are spring, and spring is installed on the outside of plunger.
Described piston-type hydraulic buffer, energy storage apparatus are " gas spring ", charge into gas in the seal space of piston ring and plunger loam cake, form " gas spring ".
Described piston-type hydraulic buffer, the piston ring upper fixed connects a position-limited lever.
Described piston-type hydraulic buffer, the piston ring outer wall is equipped with seal ring.
Described piston-type hydraulic buffer, throttling rod are taper variable post.
Described piston-type hydraulic buffer, outer cylinder body external wall of upper portion fixed installation limiting board anchor ear, the fixedly connected switch base carriage of spacing anchor ear, the fixedly connected position limit switch seat of switch base carriage, on the position limit switch seat position limit switch is installed, the control system of position limit switch and high speed operation thing electrically connects; Described plunger upper part outer wall is by spacing anchor ear fixed installation limiting board, and the bottom of limiting board is colludes shape, hooks together limiting board and position limit switch cooperating under the normality with the limiting board anchor ear.
Described piston-type hydraulic buffer, the outer cylinder body inwall is equipped with guiding tile and seal ring.
Described piston-type hydraulic buffer, exterior surface is fixed a cushion pad on the plunger.
The so-called piston type of the present invention is meant in the plunger of hydraulic bjuffer piston ring is set, this piston ring can move up and down in plunger, separate with cavity of resorption (entering liquid during buffering) by the epicoele (having gas) of sealing type piston ring plunger, realize that the liquid gas in the buffering course separates, to improve shock-absorbing capacity and to reduce height, the repeatability of shock-absorbing capacity is improved, increase the service life, repetition test in short-term, the property retention conformity is good.
When the object of high speed operation impacted buffer, the liquid that is stored in the outer cylinder body had formed pressure difference by throttling, with the energy storage apparatus acting in conjunction, changed pressure difference, thereby realized slowing down, and reached the buffering purpose.Buffer employing energy storage apparatus comes the part kinetic energy in the store buffer process, and realizes resetting of plunger.Energy storage apparatus can adopt spring, and spring can be installed in the plunger, also can be installed in outside the plunger, to reach the purpose that reduces the overall structure size; Energy storage apparatus also can be " gas spring ", promptly charge into the gas of certain pressure in advance toward the plunger epicoele of sealing, when buffering, plunger moves downward, the pressure of plunger cavity of resorption increases, move upward thereby promote piston ring, and the gas in the plunger epicoele by compression, it has just had the effect of " spring " on function.After buffering finished, when weight left buffer, the pressure in the energy storage apparatus can be released, piston ring in the plunger since about pressure difference move downward, and the liquid in the plunger pushed back in the liquid storage cylinder of outer cylinder body by throttle orifice, thereby promote to move on the plunger, realize that long stroke resets.In buffering course, energy storage apparatus performance accumulation of energy effect in energy storage, can absorb the impact in the buffering course, has improved damping characteristics, has reached the buffering purpose.This structure has highly low, in light weight, easy for installation and can effectively absorb technique effects such as initial impact energy.
Hydraulic bjuffer of the present invention can not only improve damping characteristics, and has structurally reduced overall dimensions, has saved the installing space of building.Hydraulic bjuffer of the present invention is applied to the elevator field especially.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the structural representation of the embodiment of the invention two.
Fig. 5 is the right elevation of Fig. 4.
Fig. 6 is the left view of Fig. 4.
In the diagram: 1, cushion rubber bumper, 2, the plunger loam cake, 3, spacing anchor ear, 4, limiting board, 5, plunger, 6, Returnning spring, 7, position-limited lever, 8, guiding tile, 9, limiting board anchor ear, 10, the position limit switch seat, 11, position limit switch, 12, outer cylinder body, 13, outer shell seat, 14, throttling rod, 15, oil nozzle, 16, plunger base, 17, piston ring, 18, O-ring seals, 19, switch base carriage, 20, seal ring, 21, gas charging valve.
Embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
Embodiment one: as Figure 1-3, welding outer cylinder body 12 in outer shell seat 13 tops is also installed taper throttling rod 14 on the outer shell seat 13, and throttling rod 14 is in the outer cylinder body 12.The structure of throttling rod 14 is a taper variable post, and structure and size are determined according to parameters such as damper mass scope, buffer speed and displacements.
Have logical hydraulic fluid port on outer cylinder body 12 walls, logical oil port welding oil nozzle 15, it is C district among Fig. 1 that oil pours into outer cylinder body 12 inner oil pockets by oil nozzle 15.
The external wall of upper portion fixed installation limiting board anchor ear 9 of outer cylinder body 12,9 employings of limiting board anchor ear are threaded or weld switch base carriage 19, switch base carriage 19 supports and fixed journey system switch base 10, position limit switch 11 is installed on the position limit switch seat 10, and position limit switch 11 electrically connects with the control system of outside high speed operation thing.
Stretch into one section of the bottom of plunger 5 in the outer cylinder body 12, the external diameter of the internal diameter of outer cylinder body 12 and plunger 5 is suitable, and oil seal cooperates between the two, and plunger 5 can slide up and down along the inwall of outer cylinder body 12.
The upper inside wall of outer cylinder body 12 also is equipped with guiding tile 8 and seal ring 18, by the effect of guiding tile 8, can keep plunger 5 to do vertical motion, and plunger 5 satisfies technical requirementss such as stability, intensity and working life.Effect by seal ring 8 further strengthens the sealing of 5 of outer cylinder body 12 and plungers.
The end opening of plunger 5 is sealed by plunger base 16, and plunger base 16 middle parts have throttle orifice, and aperture portion can be passed throttling rod 14, becomes Spielpassung between the two.The plunger loam cake 2 suitable for reading of plunger 5 is sealed, and the outer surface of plunger loam cake 2 is one deck cushion rubber bumper 1 fixedly, and cushion rubber bumper 1 adopts rubber to make.
The piston ring 17 that is slidingly matched in the plunger 5, hermetic seal between the two cooperates, and piston ring 17 upper fixed connect position-limited lever 7, and piston ring 17 outer walls are equipped with O V-shaped ring 20, so that it further strengthens and the sealing of 5 of plungers.2 of piston ring 17 and plunger loam cakes form nonocclusive A district, and under normal conditions, piston ring 17 is fitted with plunger base 16; Through after the action of giving, piston ring 17 is done relative movement (referring to the dotted line position among Fig. 1), and 16 of piston ring 17 and plunger bases form an airtight B district, and the B district is communicated with the C district by throttle orifice.Piston ring 17 can slide up and down in plunger 5, and when plunger 5 moved downward certain position, position-limited lever 7 contacted plunger loam cake 2, and control piston ring 17 ram piston loam cake 2 up under effect of inertia is to reduce piston ring 17 distortion.
Piston ring 17 links to each other with Returnning spring 6 lower ends that are built in plunger 5, and the upper end of Returnning spring 6 links to each other with plunger loam cake 2.
The external wall of upper portion of plunger 5 is by spacing anchor ear 3 fixed installation limiting boards 4, limiting board 4 and position limit switch 11 cooperatings.The up operation of 4 pairs of plungers 5 of limiting board is assisted spacing, and when plunger 5 was reset to limit position, the bottom of limiting board 4 was colluded the shape head and hooked limiting board anchor ear 9; When buffering, limiting board 4 can trigger position limit switch 11 immediately, makes the outage of high speed operation thing.
The energy storage apparatus of present embodiment is a Returnning spring 6, the inside that plunger 5 is in 17 in plunger loam cake 2 and piston ring forms non-tight district A (there is air in this district), in buffering course, effect by Returnning spring 6 absorbs impact and stored energy, reach the fast Absorption energy, reduce pulsatile impact, increase the purpose of accumulation of energy.After buffering finished, the energy by Returnning spring 6 discharges to be realized resetting.
When the high speed operation thing impacted Rubber end 1,1 buffer function of Rubber end prevented that metal from directly impacting; Then, weight moves downward plunger 5, forms airtight B district at piston ring 17 and 16 of plunger bases, and the oil in the C district of compression sealing enters the B district by the throttle orifice on the plunger base 16, and the B district forms pressure, promotes piston ring 17 and moves upward.Enter the oil in B district by the throttle orifice of plunger base 16, promptly entered in the plunger 5, realized buffering and accumulation of energy process.
After buffering finished, weight left, and Returnning spring 6 by compression promotes piston ring 17 and moves downward, and the oil pressure in the B district is returned the C district oil pocket of outer cylinder body 12, and after entering oil in the outer cylinder body 12, promote plunger 5 again to move upward, and realizes resetting.
From top explanation as can be known, in airtight C district, the interval oil that flows of B can not contact with air, realized Oil-gas Separation, solved thoroughly that prior art oil gas mixes and many technical problems of existing.
Embodiment two: shown in Fig. 4-6, be with embodiment one difference: present embodiment has saved spring, it adopts " gas spring ", promptly utilize gas to come energy storage and reset, at plunger loam cake 2 or other position gas charging valve 21 is installed, air valve 21 is that the A district charges into gas toward the seal space of piston ring 17 and 2 formation of plunger loam cake, forms " gas spring ".
The air chamber that plunger loam cake 2 and piston ring 17 form charges into inert gas or air formation seal space is the A district.In buffering course, impact and stored energy by the effect absorption of " gas spring ", reach the fast Absorption energy, reduce pulsatile impact, increase the purpose of accumulation of energy, and can reduce the size of buffer again.After buffering finished, the energy by " gas spring " discharges to be realized resetting.
Present embodiment has also been realized Oil-gas Separation, and when object impacts buffer, plunger moves downward, and by the throttling of throttling rod and the accumulation of energy effect of " gas spring ", utilizes " gas spring " interior gas to be compressed and expands and realize cushioning and resetting; " gas spring " pressure store energy during buffering reaches buffering and absorbs and impacts.By " gas spring " release pressure energy, promote piston ring and move downward when resetting, oil is back to cylinder body from plunger, realizes resetting.
Present embodiment has utilized the gas high-compressibility, and it has saved Returnning spring, and further simplified structure has reduced the height of buffer.
Other content of present embodiment is identical with embodiment one.
Embodiment three: the energy storage apparatus of present embodiment is a spring, and spring is installed on the outside of plunger, and other content is identical with embodiment one.
Those skilled in the art will be appreciated that the foregoing description only is to be used to explain the present invention, and is not as limitation of the invention, all will fall within protection scope of the present invention above embodiment's variation, modification.
Hydraulic bjuffer cushion stroke of the present invention is short, and a large amount of pressure can store by accumulator, and keep certain pressure by after the throttling, absorbs oil shock and pressure pulsation, can reduce to impact the held stationary stop; Utilize piston ring to realize Oil-gas Separation, resolve buffer performance repeatability problem.
Claims (10)
1, a kind of piston-type hydraulic buffer comprises outer shell seat, outer cylinder body, throttling rod, oil nozzle, plunger, plunger base, plunger loam cake, and the outer shell seat is installed outer cylinder body and throttling rod, and throttling rod is in the outer cylinder body; Outer cylinder body is communicated with oil nozzle, and hydraulic oil pours in the outer cylinder body by oil nozzle; The sliding type plunger that is sealed and matched in the outer cylinder body, the bottom of plunger is sealed by the plunger base, has throttle orifice on the plunger base, and throttling rod passes the throttle orifice in the plunger base, between the two for becoming Spielpassung; The suitable for reading of plunger sealed by the plunger loam cake; It is characterized in that: the plunger internal sealed piston ring that is slidingly matched, establish an energy storage apparatus on the plunger.
2, piston-type hydraulic buffer according to claim 1 is characterized in that, described energy storage apparatus is a spring, and spring is in the plunger, and upper and lower end attachment post respectively covers and piston ring beyond the Great Wall.
3, piston-type hydraulic buffer according to claim 1 is characterized in that, described energy storage apparatus is a spring, and spring is installed on the outside of plunger.
4, piston-type hydraulic buffer according to claim 1 is characterized in that, described energy storage apparatus is " gas spring ", charges into gas in the seal space of piston ring and plunger loam cake, forms " gas spring ".
According to each described piston-type hydraulic buffer of claim 1-4, it is characterized in that 5, described piston ring upper fixed connects a position-limited lever.
6, piston-type hydraulic buffer according to claim 5 is characterized in that, described piston ring outer wall is equipped with seal ring.
7, piston-type hydraulic buffer according to claim 1 is characterized in that, described throttling rod is a taper variable post.
8, piston-type hydraulic buffer according to claim 1, it is characterized in that, described outer cylinder body external wall of upper portion fixed installation limiting board anchor ear, the fixedly connected switch base carriage of spacing anchor ear, the fixedly connected position limit switch seat of switch base carriage, on the position limit switch seat position limit switch is installed, the control system of position limit switch and high speed operation thing electrically connects; Described plunger upper part outer wall is by spacing anchor ear fixed installation limiting board, and the bottom of limiting board is colludes shape, hooks together limiting board and position limit switch cooperating under the normality with the limiting board anchor ear.
9, piston-type hydraulic buffer according to claim 1 is characterized in that, described outer cylinder body inwall is equipped with guiding tile and seal ring.
10, piston-type hydraulic buffer according to claim 1 is characterized in that, exterior surface is fixed a cushion pad on the described plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100980530A CN101539182B (en) | 2009-04-27 | 2009-04-27 | Piston-type hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100980530A CN101539182B (en) | 2009-04-27 | 2009-04-27 | Piston-type hydraulic buffer |
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| Publication Number | Publication Date |
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| CN101539182A true CN101539182A (en) | 2009-09-23 |
| CN101539182B CN101539182B (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100980530A Active CN101539182B (en) | 2009-04-27 | 2009-04-27 | Piston-type hydraulic buffer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767587A (en) * | 2012-08-02 | 2012-11-07 | 杭州沪宁电梯配件有限公司 | Fully-sealed hydraulic buffering device |
| CN105074265B (en) * | 2013-02-12 | 2017-03-15 | 标致·雪铁龙汽车公司 | Carriage |
| CN109274204A (en) * | 2018-10-19 | 2019-01-25 | 濮阳市华南重工科技有限公司 | A kind of motor support pedestal |
| CN109681566A (en) * | 2018-12-30 | 2019-04-26 | 宁波长飞亚塑料机械制造有限公司 | A kind of injection molding machine hydraulic damping device |
| CN114412885A (en) * | 2022-01-20 | 2022-04-29 | 中山大学·深圳 | Method and device for improving mechanical flexibility of hydraulic valve cylinder control system |
-
2009
- 2009-04-27 CN CN2009100980530A patent/CN101539182B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767587A (en) * | 2012-08-02 | 2012-11-07 | 杭州沪宁电梯配件有限公司 | Fully-sealed hydraulic buffering device |
| CN105074265B (en) * | 2013-02-12 | 2017-03-15 | 标致·雪铁龙汽车公司 | Carriage |
| CN109274204A (en) * | 2018-10-19 | 2019-01-25 | 濮阳市华南重工科技有限公司 | A kind of motor support pedestal |
| CN109681566A (en) * | 2018-12-30 | 2019-04-26 | 宁波长飞亚塑料机械制造有限公司 | A kind of injection molding machine hydraulic damping device |
| CN114412885A (en) * | 2022-01-20 | 2022-04-29 | 中山大学·深圳 | Method and device for improving mechanical flexibility of hydraulic valve cylinder control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101539182B (en) | 2010-09-01 |
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Legal Events
| Date | Code | Title | Description |
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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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311121 Zhongtai village water tower village, Yuhang District, Hangzhou City, Zhejiang province (Zhongtai Industrial Park) Patentee after: HANGZHOU HUNING ELEVATOR PARTS CO., LTD. Address before: 311121 Zhongtai village water tower village, Yuhang District, Hangzhou City, Zhejiang province (Zhongtai Industrial Park) Patentee before: Hangzhou Huning Elevator Fitting Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Yuhang Thailand Street Tower Village in Hangzhou City, Zhejiang province 311121 Patentee after: HANGZHOU HUNING ELEVATOR PARTS CO., LTD. Address before: 311121 Zhongtai village water tower village, Yuhang District, Hangzhou City, Zhejiang province (Zhongtai Industrial Park) Patentee before: HANGZHOU HUNING ELEVATOR PARTS CO., LTD. |