CN2336134Y - Hydraulic buffer - Google Patents
Hydraulic buffer Download PDFInfo
- Publication number
- CN2336134Y CN2336134Y CN 98226122 CN98226122U CN2336134Y CN 2336134 Y CN2336134 Y CN 2336134Y CN 98226122 CN98226122 CN 98226122 CN 98226122 U CN98226122 U CN 98226122U CN 2336134 Y CN2336134 Y CN 2336134Y
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- CN
- China
- Prior art keywords
- piston
- cylinder sleeve
- splined shaft
- groove
- hydraulic
- 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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Abstract
The utility model relates to a hydraulic buffer which comprises a cylinder sleeve, an upper cover and a lower cover fixed at the two ends of the cylinder sleeve in which a spline shaft or a spline sleeve is arranged. The spline shaft (sleeve) is provided with a groove, the depth of which is gradually tapered from the starting end to the end of the stroke of a piston. The hydraulic buffering can be realized by using the throttling effect of the throttling hole formed between the piston and the spline shaft (sleeve). The buffer can cause a piston rod to be pulled for ensuring the buffer to have long working stroke and large buffering capacity, and a plurality of buffers are connected in parallel for use. In addition, in the process of the move of the piston along the spline shaft (sleeve), the area of the throttling hole continuously changes, and thus the buffer can run smoothly.
Description
The utility model relates to a kind of damping device, a kind of hydraulic bjuffer that can make the high moving object of big mass velocity realize safety brake with reasonable retardation in predetermined distance of more specifically saying so.Be applicable to that transportation prevents that pulleying, mistake from putting, the multiple situations such as interception when ship-board aircraft lands in promoting.
Known plastic deformation energy-absorbing, friction energy-absorbing buffering device are used comparatively extensive.But this class braking device its braking force is on the one hand changed greatly by such environmental effects, is difficult to accurate adjustment; Owing to be simplified design, cause some assumed conditionses not conform to the actual conditions on the other hand, can not satisfy the adaptation complex working condition, to realize steadily safety brake reliably.
Utilize the fluid orifices throttle effect, can realize vibration damping, the buffer function of mechanic effect.The hydraulic bjuffer of using as cranage bridge dolly, elevator bridge case hydraulic buffer, adjustable linear buffer device etc.Cranage bridge dolly hydraulic bjuffer is to open a series of apertures on the oil cylinder upper body, and along with moving down of piston, the quantity of throttling pore reduces gradually.Because it is discontinuous that orifice size changes, cause buffer output to be pulsatile change, thereby influenced the damping and the buffering effect of system with hydrodynamic pressure.Elevator bridge case hydraulic buffer adopts the crevice throttle between throttle orifice and adjustment rod, because manufacturing, installation errors, and hydraulic shock makes the generation of adjustment rod radially tremble, depart from the buffering course, makes and adjusts rod and throttle orifice decentraction, causes the performance characteristic instability.In addition, existing buffer normally piston (or plunger) directly is subjected to the external force collision effect, and this operating mode is unallowed in many cases; And this buffer that is subjected to pressure type, working stroke is short, and buffer capacity is little, is difficult to satisfy the safety brake requirement of high speed, big quality system; Structure is single, versatility is poor, can not use with other matched with devices, makes the application of hydraulic bjuffer be subjected to severely restricts.
The purpose of this utility model provides that a kind of cushion stroke is long, working stability is reliable, capacity is big, highly versatile, can with the supporting hydraulic bjuffer of other mechanism.
The purpose of this utility model can realize in the following manner: a kind of hydraulic bjuffer, include cylinder sleeve, be fixed on loam cake and lower cover, piston and the piston rod at cylinder sleeve two ends, described cylinder sleeve internal fixation spline housing, have groove on the spline housing inwall vertically, the degree of depth of groove is shoaled gradually by initial end to the terminal of the stroke of piston, and piston is arranged in the spline housing, and cavity is divided into upper cavity and lower chamber, fill with liquid in the cavity, form throttle orifice between piston and the spline housing.
A kind of hydraulic bjuffer, include cylinder sleeve, be fixed on loam cake and lower cover, piston and the piston rod at cylinder sleeve two ends, be provided with splined shaft in the described cylinder sleeve, the two ends of splined shaft be separately fixed at loam cake and under cover, piston slides up and down along splined shaft and cylinder sleeve, have groove on the splined shaft vertically, the degree of depth of groove is diminished to terminal gradually by the initial end of piston stroke, forms throttle orifice between piston and splined shaft.
The utility model compared with prior art has following advantage: the utility model is owing to adopted the orifice restriction effect that forms between splined shaft (cover) and the piston, its throttle hole area is along with the rising of piston diminishes gradually, its variation is continuous, so the pulse change of intracavity liquid pressure can not occur, buffer work relatively steadily, reliably.Requirement on machining accuracy to moving element is not high in addition.The 3rd, the operating mode of piston rod is a tension, and the buffer working stroke is long, buffer capacity is big, and can by with the supporting use of pulley mechanism, satisfy bigger stroke system requirement, several buffers are in parallel to be used, with satisfy at a high speed, the safety brake requirement of big quality system.
Description of drawings:
Accompanying drawing 1 is first an embodiment's of the present utility model structural representation.
Accompanying drawing 2 is A-A sectional views of Fig. 1.
Accompanying drawing 3 is structural representations of second embodiment of the present utility model.
Accompanying drawing 4 is B-B sectional drawings of Fig. 3.
Accompanying drawing 5 is structural representations of the utility model the 3rd embodiment.
Accompanying drawing 6 is C-C sectional views of Fig. 5.
The utility model is described in further detail with reference to the accompanying drawings:
Shown in accompanying drawing 1,2: the hydraulic bjuffer that a kind of profile is similar to oil hydraulic cylinder includes cylinder sleeve 3 and at the inboard fixedly spline housing 2 of the casing wall of cylinder sleeve 3, described spline housing 2 is thin-walled tubuloses, have groove 6 on its inwall vertically, the groove of being opened on the spline housing 26 is 4～10, and the degree of depth of each groove 6 is shoaled gradually by initial end to the terminal of the stroke of piston 4.Piston 4 is installed in the spline housing 2, between the two for movingly, piston 4 is divided into upper cavity 9 and lower chamber 10 with the inner chamber of cylinder sleeve 3, the two ends up and down of cylinder sleeve 3 are fixed with loam cake 7 and base 8 respectively, one end fixed piston 4 of piston rod 1, the other end stretches out loam cake 7, and the termination is provided with earrings 5 or threaded end, and piston rod 1 can be linked to each other with the subsidiary body in the external world.When external force is done the time spent, piston rod 1 tension drives piston 4 along spline housing 2 axial motions, linerless and sealing on the piston 4.All fill with liquid in upper cavity 9 and the lower chamber 10.Form throttling 13 between spline housing 2 and the piston 4.When piston rod 1 tension, move on the piston 4, because the small damping effect of throttle orifice 13, liquid produces the power that stops piston 4 motions, realizes buffering.Lower chamber 10 communicates with shoe cream room (case) 11, and the liquid return that lower chamber 10 overflows is to liquid tank 11, and the liquid of liquid tank 11 also can in time replenish the leakage of buffer, makes it full of liquid all the time, prevents to press empty phenomenon because of the feed flow deficiency causes.When the buffer frequency of utilization is higher, auxiliary pump station 12 is set, auxiliary pump station 12 communicates with upper cavity 9.The work of notes press pump, pressured fluid enters upper cavity 9.One side resets buffer and applies pretightening force to load, gives buffer to force cooling on the other hand.
Shown in accompanying drawing 3,4: Fig. 3,4 has showed second embodiment's of hydraulic bjuffer structural representation.A kind of profile is similar to the hydraulic bjuffer of oil hydraulic cylinder, include cylinder sleeve 3, the two ends of cylinder sleeve 3 are fixed with loam cake 7 and lower cover 8 respectively, in cylinder sleeve 3, be provided with splined shaft 14 vertically, its two ends are separately fixed on loam cake 7 and the lower cover 8, be provided with piston 4 in the cylinder sleeve 3, piston 4 is divided into upper cavity 9 and lower chamber 10 with the inner chamber of cylinder sleeve 3, piston 4 can slide up and down along splined shaft 14, and splined shaft 14 can be provided with 2～4, and the groove of being opened on the splined shaft 14 15 is 2～6, the degree of depth of groove 15 is diminished to terminal gradually by the initial end of piston 4 strokes, when piston 4 was moved on splined shaft 14, the throttle orifice 16 of formation diminished gradually, trended towards zero.Lower chamber 10 communicates with shoe cream room (case) 11.One end of piston rod 1 is fixed on the piston 4, and the other end stretches out loam cake 7, and its termination can link to each other with subsidiary body.When the buffer frequency of utilization is higher, auxiliary pump station 12 can be set, it is communicated with upper cavity 9.
Shown in accompanying drawing 5,6: Fig. 5,6 has showed the 3rd embodiment's of hydraulic bjuffer structural representation.A kind of profile is similar to the hydraulic bjuffer of oil hydraulic cylinder, include cylinder sleeve 3, the two ends of cylinder sleeve 3 are fixed with loam cake 7 and lower cover 8 respectively, in cylinder sleeve 3, be provided with splined shaft 14 vertically, described spline 14 is arranged on the middle part of cylinder sleeve 3, its two ends are separately fixed on loam cake 7 and the lower cover 8, be provided with piston 4 in the cylinder sleeve 3, piston 4 is divided into upper cavity 9 and lower chamber 10 with the inner chamber of cylinder sleeve 3, piston 4 can slide up and down along splined shaft 14, has groove 15 on the splined shaft 14, and described groove 15 is 2～6, the degree of depth of groove 15 is diminished to terminal gradually by the initial end of piston 4 strokes, when piston 4 was moved on splined shaft 14, the throttle orifice 16 of formation diminished gradually, and an end of piston rod 1 is fixed on the piston 4, the other end stretches out loam cake 7, and its termination can link to each other with subsidiary body.Stress balance when guaranteeing that piston 4 is drawn by piston rod 1, piston rod 1 should be 2～4, and evenly distributes.Lower chamber 10 communicates with shoe cream room (case) 11.When the buffer frequency of utilization is higher, auxiliary pump station 12 can be set, it is communicated with upper cavity 9.
Claims (10)
1. hydraulic bjuffer, include cylinder sleeve (3), be fixed on the loam cake (7) and the lower cover (8) at cylinder sleeve (3) two ends, piston (4) and piston rod (1), it is characterized in that: the inboard fixedly spline housing (2) of the casing wall of described cylinder sleeve (3), have groove (6) vertically on spline housing (2) inwall, the degree of depth of groove (6) is shoaled gradually by initial end to the terminal of the stroke of piston (4), piston (4) is in spline housing (2), cavity is divided into upper cavity (9) and lower chamber (10), fill with liquid in the cavity, form throttle orifice (13) between piston (4) and the spline housing (2), lower chamber (10) communicates with shoe cream room (case) (11).
2. hydraulic bjuffer according to claim 1 is characterized in that: the groove of being opened on described spline housing (2) inwall (6) is 4～10.
3. hydraulic bjuffer according to claim 1 and 2 is characterized in that: described upper cavity (9) links to each other with auxiliary pump station (12).
4. hydraulic bjuffer, mainly include cylinder sleeve (3), be fixed on the loam cake (7) and the lower cover (8) at cylinder sleeve (3) two ends, piston (4) and piston rod (1), it is characterized in that: be provided with splined shaft (14) in the described cylinder sleeve (3), the two ends of splined shaft (14) are separately fixed on loam cake (7) and the lower cover (8), be provided with piston (4) in the cylinder sleeve (3), piston (4) slides up and down along splined shaft (14), splined shaft (14) upper edge has groove (15), the degree of depth of groove (15) is diminished to terminal gradually by the initial end of piston (4) stroke, form throttle orifice (16) between piston (4) and splined shaft (14), lower chamber (10) communicates with shoe cream room (case) (11).
5. the hydraulic bjuffer of stating according to claim 4 ammonia, it is characterized in that: the groove of being opened on the described splined shaft (14) (15) is 2～6.
6. according to claim 4 or 5 described hydraulic bjuffers, it is characterized in that: described splined shaft (14) is 2～4.
7. according to claim 4 or 5 described hydraulic bjuffers, it is characterized in that: described splined shaft (14) is fixed on the middle part of cylinder sleeve (3), and the piston rod (1) that links to each other with piston (4) is provided with 2～4, and evenly distributes.
8. according to claim 4 or 5 described hydraulic bjuffers, it is characterized in that: described upper cavity (9) links to each other with auxiliary pump station (12).
9. hydraulic bjuffer according to claim 6, it is held to levy and is: described upper cavity (9) links to each other with auxiliary pump station (12).
10. hydraulic bjuffer according to claim 7 is characterized in that: described upper cavity (9) links to each other with auxiliary pump station (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226122 CN2336134Y (en) | 1998-03-04 | 1998-03-04 | Hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226122 CN2336134Y (en) | 1998-03-04 | 1998-03-04 | Hydraulic buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2336134Y true CN2336134Y (en) | 1999-09-01 |
Family
ID=33976690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98226122 Expired - Fee Related CN2336134Y (en) | 1998-03-04 | 1998-03-04 | Hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2336134Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881315A (en) * | 2010-06-24 | 2010-11-10 | 唐善培 | Damper with increasing damping ratio |
| CN101949398A (en) * | 2010-09-13 | 2011-01-19 | 三一重工股份有限公司 | Single-action hydraulic oil cylinder and paver with same |
| CN101975240A (en) * | 2010-10-25 | 2011-02-16 | 重庆瑞翱机电设备有限公司 | Automatic variable damping rear shock absorber of motorcycle and manufacturing method thereof |
| CN101982670A (en) * | 2010-10-25 | 2011-03-02 | 重庆瑞翱机电设备有限公司 | Automatic variable damping front shock absorber of motorcycle and manufacture method thereof |
| CN102352908A (en) * | 2011-10-31 | 2012-02-15 | 重庆瑞翱机电设备有限公司 | Motorcycle automatic damping-changing front shock absorber damper |
| CN102587775A (en) * | 2011-01-14 | 2012-07-18 | 漳州威迪亚卫浴有限公司 | Damping structure |
| CN103486187A (en) * | 2013-10-11 | 2014-01-01 | 重庆瑞翱机电设备有限公司 | Automatic variable damping rear shock absorber of motorcycle capable of vibrating along with ups and downs of road surface |
| CN103486190A (en) * | 2013-10-11 | 2014-01-01 | 重庆瑞翱机电设备有限公司 | Automatic variable damping front shock absorber of motorcycle capable of vibrating along with ups and downs of road surface |
| CN103775429A (en) * | 2013-03-19 | 2014-05-07 | 倪维勇 | Throttling groove comprising connecting oil groove |
| CN106240585A (en) * | 2016-08-26 | 2016-12-21 | 李聪 | Buffer compartment |
-
1998
- 1998-03-04 CN CN 98226122 patent/CN2336134Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881315A (en) * | 2010-06-24 | 2010-11-10 | 唐善培 | Damper with increasing damping ratio |
| CN101949398A (en) * | 2010-09-13 | 2011-01-19 | 三一重工股份有限公司 | Single-action hydraulic oil cylinder and paver with same |
| CN101975240B (en) * | 2010-10-25 | 2012-12-26 | 重庆瑞翱机电设备有限公司 | Automatic variable damping rear shock absorber of motorcycle and manufacturing method thereof |
| CN101975240A (en) * | 2010-10-25 | 2011-02-16 | 重庆瑞翱机电设备有限公司 | Automatic variable damping rear shock absorber of motorcycle and manufacturing method thereof |
| CN101982670A (en) * | 2010-10-25 | 2011-03-02 | 重庆瑞翱机电设备有限公司 | Automatic variable damping front shock absorber of motorcycle and manufacture method thereof |
| CN102587775B (en) * | 2011-01-14 | 2016-04-06 | 李飞勇 | A kind of damping structure |
| CN102587775A (en) * | 2011-01-14 | 2012-07-18 | 漳州威迪亚卫浴有限公司 | Damping structure |
| CN102352908B (en) * | 2011-10-31 | 2012-12-05 | 重庆瑞翱机电设备有限公司 | Motorcycle automatic damping-changing front shock absorber damper |
| CN102352908A (en) * | 2011-10-31 | 2012-02-15 | 重庆瑞翱机电设备有限公司 | Motorcycle automatic damping-changing front shock absorber damper |
| CN103775429A (en) * | 2013-03-19 | 2014-05-07 | 倪维勇 | Throttling groove comprising connecting oil groove |
| CN103486187A (en) * | 2013-10-11 | 2014-01-01 | 重庆瑞翱机电设备有限公司 | Automatic variable damping rear shock absorber of motorcycle capable of vibrating along with ups and downs of road surface |
| CN103486190A (en) * | 2013-10-11 | 2014-01-01 | 重庆瑞翱机电设备有限公司 | Automatic variable damping front shock absorber of motorcycle capable of vibrating along with ups and downs of road surface |
| CN106240585A (en) * | 2016-08-26 | 2016-12-21 | 李聪 | Buffer compartment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 1999.9.1 |