CN202579789U - Jacking-pulling type hydraulic buffer - Google Patents
Jacking-pulling type hydraulic buffer Download PDFInfo
- Publication number
- CN202579789U CN202579789U CN 201220112732 CN201220112732U CN202579789U CN 202579789 U CN202579789 U CN 202579789U CN 201220112732 CN201220112732 CN 201220112732 CN 201220112732 U CN201220112732 U CN 201220112732U CN 202579789 U CN202579789 U CN 202579789U
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- hole
- pressure regulating
- bar
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Abstract
The utility model discloses a jacking-pulling type hydraulic buffer, comprising a cylinder body, a front end cap, a rear end cap, a piston, a piston rod unit, a restoring spring and a pressure regulating rod, wherein the centers of the front end cap and the rear end cap are provided with a sliding hole respectively; the piston is arranged between the front end cap and the rear end cap; the middle end of the piston rod unit is fixed on the piston, while the front and rear ends of the piston rod can slid in the sliding holes in the front end cap and the rear end cap respectively; the piston is further provided with return ports on the outer side of a slide bar; each return port is internally provided with a single valve; a pressure regulating hole is arranged in the centre of the rear end of the piston rod unit; the piston rod unit is provided with a buffer oil inlet and a buffer oil outlet for being communicated with the pressure regulating hole; the cavity of the pressure regulating hole is provided with a cone-frustum-shaped pressure regulating cavity; the body of the pressure regulating rod is provided with a cone-frustum-shaped pressure regulating part; the pressure regulating part is located in the pressure regulating cavity; and the pressure regulating part is moved from front to back along with the pressure regulating rod in the pressure regulating hole, and changes the space between the outer wall of the pressure regulating part and inner wall of the pressure regulating cavity during the movement process. The jacking-pulling type hydraulic buffer disclosed by the utility model has a reasonable structure, and stable and reliable working performance.
Description
Technical field
The utility model belongs to the damping device technical field, is specifically related to a kind of push-and-pull type hydraulic bjuffer.
Background technique
The push-and-pull type hydraulic bjuffer is used for the processing of needs such as automatic drilling machine, machined into, milling machine processing one step, and a stepping stabilized speed is advanced and used on each mechanism or the machinery equipment of work.
At present; Push-and-pull type hydraulic bjuffer maximum problem in application is exactly short problem in working life; Because its reciprocating frequency is very high; Parts depreciation is fast, and general push-and-pull type hydraulic bjuffer will leakage of oil in using less than year, has had a strong impact on the working life of push-and-pull type hydraulic bjuffer.
For addressing the above problem, Chinese patent CN201696294U discloses a kind of speed stabilization machine, and it comprises axle, outer tube; Axle is positioned at outer tube, and outside the end protruded tube of axle, the other end that joins with axle in the outward appearance is provided with interior pipe; Axle is arranged with oil sac outward near an end of interior pipe; Oil sac is the bag shape of an annular, on pipe and the axle, is provided with piston between axle and the interior pipe in the opening end of oil sac is arranged on; This speed stabilization machine can be regulated from speed stabilizing between the 0.25-300kg, but speed stabilization machine uses oil sac as Sealing owing to there is not oil storage tank, repeatedly use this speed stabilization machine after, fluid can permeate with inwall from the outer wall of oil sac, sealing is variation gradually; In addition, comparatively serious to piston wear in this speed stabilization machine using process, the bearing pressure of an end this speed stabilization machine after the time reduces.Simultaneously, this speed stabilization machine complex structure, manufacturing and assembly cost are higher.
Chinese patent CN200978848Y discloses a kind of hydraulic pressure speed stabilization machine; It comprises outer shell, inner casing and is installed in the said outer shell and an end stretches out the piston rod of said outer shell; In said inner casing, be provided with and the contacted piston of said piston rod; Between said piston and upper end cap, be provided with oil sealing and Returnning spring, to realize the steady feeding and the sealing of piston rod.But in actual application, the sealing effect of this speed stabilization machine is relatively poor, and after using a period of time, fluid has certain infiltration from the position that piston rod cooperates with upper end cap.
The model utility content
The purpose of the utility model provide a kind of structure comparatively rationally, the comparatively reliable and stable push-and-pull type hydraulic bjuffer of performance.
The technological scheme that realizes the utility model purpose is: a kind of push-and-pull type hydraulic bjuffer comprises cylinder body, is arranged on the preceding plug of cylinder body one end, the back plug that is arranged on the cylinder body the other end, the piston that can in cylinder body, move back and forth, is fixed on the piston rod assembly on the piston and is set on the piston rod assembly and is connected to the Returnning spring on back plug and the piston; In the said cylinder body by the cavity of plug before said and back plug clamping as shoe cream room, wherein be filled with hydraulic oil; Plug is equipped with slide opening with plug center, back before said; Said piston is arranged between preceding plug and the back plug; Its structural feature is: also comprise a pressure regulation bar; The middle-end of said piston rod assembly is fixed on the piston, can slide in the slide opening of preceding plug and back plug respectively in the rear and front end; Said piston also is provided with return port in the slide bar outside, is provided with an one-way valve in each return port; The center, rear end of said piston rod assembly is provided with regulator hole; Said piston rod assembly is being provided with the buffering oil inlet hole that is used to be communicated with regulator hole and shoe cream room on piston and the body of rod of back between the plug, and on the body of rod between piston and the preceding plug, is being provided with the buffering oil outlet that is used to be communicated with regulator hole and shoe cream room; Said regulator hole is provided with the truncated cone pressure regulating cavity in its vestibule between buffering oil inlet hole and buffering oil outlet; Said pressure regulation club shaft is provided with the truncated cone pressure-regulating portion, and this pressure-regulating portion is arranged in said pressure regulating cavity; Said pressure-regulating portion is along with the pressure regulation bar moves forward and backward in regulator hole, and in moving process, changes the gap between pressure-regulating portion outer wall and the pressure regulating cavity inwall.
In the such scheme, said piston rod assembly comprises depression bar and pull bar; One end center of said depression bar is provided with the oil transportation hole, and said oil transportation hole is being positioned at port that depression bar should the end place as pressure regulating cavity, and its shape is a truncated cone shape; Said buffering oil outlet radially is arranged on the depression bar body of rod along depression bar, and is communicated with said oil transportation hole; Said pull bar edge wherein axial direction is provided with oil hole, and said buffering oil inlet hole is arranged on the pull bar body of rod, and is communicated with said oil hole; Be fixedly connected with pull bar after the end that said depression bar is provided with pressure regulating cavity passes piston, said oil hole docks with the oil transportation hole and is combined to form regulator hole.
In the such scheme, said pull bar is provided with internal thread part away from an end of depression bar; Said pressure regulation club shaft outer wall is provided with external thread part, and said pressure regulation bar is a pressure-regulating portion in abutting connection with an end of depression bar, and it is shaped as the truncated cone shape that matches with pressure regulating cavity; Said pressure regulation bar is fixed in the oil hole through being threaded, and can in rotary course, drive its pressure-regulating portion and in pressure regulating cavity, move back and forth.
In the such scheme, between said pressure regulation bar outer wall and the oil hole inwall, between said pull bar outer wall and the back plug slide opening inwall and all seal between said depression bar and the preceding plug slide opening inwall through seal ring.
In the such scheme, said cylinder body is a tubulose, said before between plug periphery wall and the cylinder bore cavity wall, between said piston periphery wall and the cylinder bore cavity wall and all seal between said plug periphery wall afterwards and the inboard wall of cylinder block through seal ring.
In the such scheme, be provided with valve seat orifice in said each return port, said each one-way valve comprises the steel ball that is used for the shutoff valve seat orifice and is used to the return springs that steel ball provides reseting elasticity; Said return springs is arranged on the side of steel ball away from preceding plug.
In the such scheme, before passing, the other end of said depression bar stretches out cylinder body behind the slide opening of plug; Said pull bar stretches out cylinder body pass the slide opening of back plug away from an end of depression bar after.
In the such scheme, said pull bar outer wall is provided with and bears part.
The utlity model has positive effect: the piston rod assembly in the utility model both can pressure-bearing, can bear again, and this adopts rational mounting type under certain occasion, can effectively reduce complete machine and take up space; The utility model makes itself and traditional product that essential distinction arranged through improving the hydraulic oil cushion stroke in addition, makes its service behaviour more reliable and more stable.
Description of drawings
Fig. 1 is a kind of sectional structure schematic representation of the utility model.
Reference character is: cylinder body 1, shoe cream room 11, preceding plug 2, back plug 3, piston 4, return port 41, valve seat orifice 42; Piston rod assembly 5, regulator hole 51, buffering oil inlet hole 52, buffering oil outlet 53, pressure regulating cavity 54, depression bar 55, oil transportation hole 551; Pull bar 56, oil hole 561, internal thread part 562 bears part 563, Returnning spring 6, pressure regulation bar 7; Pressure-regulating portion 71, external thread part 72, one-way valve 8, steel ball 81, return springs 82, seal ring 9.
Embodiment
(embodiment 1)
Fig. 1 is a kind of sectional structure schematic representation of the utility model, has shown first kind of embodiment of the utility model.
Present embodiment is a kind of push-and-pull type hydraulic bjuffer, comprises cylinder body 1, is arranged on the preceding plug 2 of cylinder body 1 one ends, the back plug 3 that is arranged on cylinder body 1 the other end, the piston 4 that can in cylinder body 1, move back and forth, is fixed on the piston rod assembly 5 on the piston 4 and is set on the piston rod assembly 5 and is connected to Returnning spring 6 and the pressure regulation bar 7 on back plug 3 and the piston 4; In the said cylinder body 1 by the cavity of plug before said 2 and back plug 3 clampings as shoe cream room 11, wherein be filled with hydraulic oil; Plug 2 is equipped with slide opening with plug 3 centers, back before said; Said piston 4 is arranged between preceding plug 2 and the back plug 3.
The middle-end of said piston rod assembly 5 is fixed on the piston 4, can slide in the slide opening of preceding plug 2 and back plug 3 respectively in the rear and front end; Said piston 4 also is provided with return port 41 in the slide bar outside, is provided with an one-way valve 8 in each return port 41; The center, rear end of said piston rod assembly 5 is provided with regulator hole 51; Said piston rod assembly 5 is being provided with the buffering oil inlet hole 52 that is used to be communicated with regulator hole 51 and shoe cream room on piston 4 and the body of rod of back between the plug 3, and on the body of rod between piston 4 and the preceding plug 2, is being provided with the buffering oil outlet 53 that is used to be communicated with regulator hole 51 and shoe cream room; Said regulator hole 51 is provided with truncated cone pressure regulating cavity 54 in its vestibule between buffering oil inlet hole 52 and buffering oil outlet 53; Said pressure regulation bar 7 bodies of rod are provided with truncated cone pressure-regulating portion 71, and this pressure-regulating portion 71 is arranged in said pressure regulating cavity 54; Said pressure-regulating portion 71 is along with pressure regulation bar 7 moves forward and backward in regulator hole 51, and in moving process, changes the gap between pressure-regulating portion 71 outer walls and pressure regulating cavity 54 inwalls.
In the present embodiment, said piston rod assembly 5 comprises depression bar 55 and pull bar 56; One end center of said depression bar 55 is provided with oil transportation hole 551, and said oil transportation hole 551 is being positioned at port that depression bar 55 should the end place as pressure regulating cavity 54, and its shape is a truncated cone shape; Said buffering oil outlet 53 radially is arranged on depression bar 55 bodies of rod along depression bar 55, and is communicated with said oil transportation hole 551; Said pull bar 56 edges wherein axial direction are provided with oil hole 561, and said buffering oil inlet hole 52 is arranged on pull bar 56 bodies of rod, and is communicated with said oil hole 561; The end that said depression bar 55 is provided with pressure regulating cavity 54 passes piston 4 backs and is fixedly connected with pull bar 56, and said oil hole 561 docks with oil transportation hole 551 and is combined to form regulator hole 51.
Said pull bar 56 is provided with internal thread part 562 away from an end of depression bar 55; Said pressure regulation bar 7 body of rod outer walls are provided with external thread part 72, and said pressure regulation bar 7 is a pressure-regulating portion 71 in abutting connection with an end of depression bar 55, and it is shaped as the truncated cone shape that matches with pressure regulating cavity 54; Said pressure regulation bar 7 is fixed in the oil hole 561 through being threaded, and can in rotary course, drive its pressure-regulating portion 71 and in pressure regulating cavity 54, move back and forth.
Between said pressure regulation bar 7 outer walls and oil hole 561 inwalls, between said pull bar 56 outer walls and the back plug 3 slide opening inwalls and all seal between said depression bar 55 and the preceding plug 2 slide opening inwalls through seal ring 9.
Said cylinder body 1 is a tubulose, said before between plug 2 periphery walls and the cylinder body 1 vestibule inwall, between said piston 4 periphery walls and the cylinder body 1 vestibule inwall and all seal between said plug 3 periphery walls afterwards and cylinder body 1 inwall through seal ring 9.
Before passing, the other end of said depression bar 55 stretches out cylinder body 1 behind the slide opening of plug 2; Said pull bar 56 stretches out cylinder body 1 pass the slide opening of back plug 3 away from an end of depression bar 55 after.Said pull bar 56 outer walls are provided with and bear part 563.Present embodiment can bear part 563 through this self is fixed on the external equipment.
Be provided with valve seat orifice 42 in said each return port 41, said each one-way valve 8 comprises the steel ball 81 that is used for shutoff valve seat orifice 42 and is used to the return springs 82 that steel ball 81 provides reseting elasticity; Said return springs 82 is arranged on the side of steel ball 81 away from preceding plug 2.
The working principle of present embodiment is following:
Driving piston 4 when in depression bar 55 is stressed, contracting moves towards the direction near back plug 3; This moment, one-way valve 8 stopped up the return port on the piston 4 41; Then the hydraulic oil between plug 3 and the piston 4 is because of receiving the extruding of piston; To get into regulator hole 51 from the buffering oil inlet hole on piston rod assembly 5 bodies of rod 52, the buffering oil outlet 53 from piston rod assembly 5 bodies of rod flows out to cylinder body 1 vestibule between piston 4 and the preceding plug 2 again, because pressure-regulating portion 71 outer walls of pressure regulation part 7 and the gap between pressure regulating cavity 54 inwalls can be preset as a suitable size; Thereby avoid piston rod assembly 5 too fast moving, and then play cushioning effect.
After the external force that depression bar 55 receives is cancelled or is reduced to a certain degree; Piston 4 resets under the reseting elasticity of Returnning spring 6; At this moment, because the elastic force of the elastic force of Returnning spring 6 return springs 82 in the one-way valve 8, thus can open check valve 8; Make its steel ball 81 no longer block the valve seat orifice 42 in the return port 41; Hydraulic oil in piston 4 and the preceding plug 2 mainly flow to piston 4 and the back cylinder body vestibule between the plug 3 from return port 41, also has sub-fraction hydraulic oil to flow into regulator holes 51 from the buffering oil outlet 53 on piston rod assembly 5 bodies of rod, again through cushion oil inlet hole 52 flow to piston 4 and after in the cylinder body vestibule between the plug 3.
Piston rod assembly in the utility model both can pressure-bearing, can bear again, and this adopts rational mounting type under certain occasion, can effectively reduce complete machine and take up space; The utility model makes itself and traditional product that essential distinction arranged through improving the hydraulic oil cushion stroke in addition, makes its service behaviour more reliable and more stable.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the mode of execution of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection domain of the utility model.
Claims (8)
1. push-and-pull type hydraulic bjuffer comprises cylinder body (1), is arranged on the preceding plug (2) of cylinder body (1) one end, the back plug (3) that is arranged on cylinder body (1) the other end, the piston (4) that can in cylinder body (1), move back and forth, is fixed on the piston rod assembly (5) on the piston (4) and is set in piston rod assembly (5) and go up and be connected to the Returnning spring (6) on back plug (3) and the piston (4); In the said cylinder body (1) by the cavity of plug (2) before said and plug (3) clamping afterwards as shoe cream room (11), wherein be filled with hydraulic oil; Plug (2) and plug (3) center, back are equipped with slide opening before said; Said piston (4) is arranged between preceding plug (2) and the back plug (3); It is characterized in that: also comprise a pressure regulation bar (7);
The middle-end of said piston rod assembly (5) is fixed on the piston (4), can slide in the slide opening of preceding plug (2) and back plug (3) respectively in the rear and front end; Said piston (4) also is provided with return port (41) in the slide bar outside, is provided with an one-way valve (8) in each return port (41);
The center, rear end of said piston rod assembly (5) is provided with regulator hole (51); Said piston rod assembly (5) is provided with the buffering oil inlet hole (52) that is used to be communicated with regulator hole (51) and shoe cream room on the body of rod that is being positioned between piston (4) and back plug (3), and on the body of rod that is positioned between piston (4) and the preceding plug (2), is provided with the buffering oil outlet (53) that is used to be communicated with regulator hole (51) and shoe cream room;
Said regulator hole (51) is provided with truncated cone pressure regulating cavity (54) at the vestibule that it is arranged between buffering oil inlet hole (52) and the buffering oil outlet (53); Said pressure regulation bar (7) body of rod is provided with truncated cone pressure-regulating portion (71), and this pressure-regulating portion (71) is arranged in said pressure regulating cavity (54); Said pressure-regulating portion (71) is along with pressure regulation bar (7) moves forward and backward in regulator hole (51), and the gap between (71) outer wall that in moving process, changes pressure-regulating portion and pressure regulating cavity (54) inwall.
2. push-and-pull type hydraulic bjuffer according to claim 1 is characterized in that: said piston rod assembly (5) comprises depression bar (55) and pull bar (56); One end center of said depression bar (55) is provided with oil transportation hole (551), and said oil transportation hole (551) at the port that is positioned at this end place of depression bar (55) as pressure regulating cavity (54), its shape is a truncated cone shape; Said buffering oil outlet (53) radially is arranged on depression bar (55) body of rod along depression bar (55), and is communicated with said oil transportation hole (551);
Said pull bar (56) edge wherein axial direction is provided with oil hole (561), and said buffering oil inlet hole (52) is arranged on pull bar (56) body of rod, and is communicated with said oil hole (561);
The end that said depression bar (55) is provided with pressure regulating cavity (54) passes piston (4) back and is fixedly connected with pull bar (56), and said oil hole (561) docks with oil transportation hole (551) and is combined to form regulator hole (51).
3. push-and-pull type hydraulic bjuffer according to claim 2 is characterized in that: said pull bar (56) is provided with internal thread part (562) away from an end of depression bar (55); Said pressure regulation bar (7) body of rod outer wall is provided with external thread part (72), and said pressure regulation bar (7) is pressure-regulating portion (71) in abutting connection with an end of depression bar (55), and it is shaped as the truncated cone shape that matches with pressure regulating cavity (54); Said pressure regulation bar (7) is fixed on through being threaded in the oil hole (561), and can in rotary course, drive its pressure-regulating portion (71) and in pressure regulating cavity (54), move back and forth.
4. push-and-pull type hydraulic bjuffer according to claim 3 is characterized in that: between said pressure regulation bar (7) outer wall and oil hole (561) inwall, between said pull bar (56) outer wall and back plug (3) the slide opening inwall and all seal through seal ring (9) between said depression bar (55) and preceding plug (2) the slide opening inwall.
5. push-and-pull type hydraulic bjuffer according to claim 4; It is characterized in that: said cylinder body (1) is a tubulose, said before between plug (2) periphery wall and cylinder body (1) the vestibule inwall, between said piston (4) periphery wall and cylinder body (1) the vestibule inwall and all seal between said plug (3) periphery wall afterwards and cylinder body (1) inwall through seal ring (9).
6. push-and-pull type hydraulic bjuffer according to claim 1; It is characterized in that: be provided with valve seat orifice (42) in said each return port (41), said each one-way valve (8) comprises the steel ball (81) that is used for shutoff valve seat orifice (42) and is used to the return springs (82) that steel ball (81) provides reseting elasticity; Said return springs (82) is arranged on the side of steel ball (81) away from preceding plug (2).
7. push-and-pull type hydraulic bjuffer according to claim 1 is characterized in that: the other end of said depression bar (55) stretches out cylinder body (1) after passing the slide opening of preceding plug (2); Said pull bar (56) stretches out cylinder body (1) pass the slide opening of back plug (3) away from an end of depression bar (55) after.
8. push-and-pull type hydraulic bjuffer according to claim 7 is characterized in that: said pull bar (56) outer wall is provided with and bears part (563).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220112732 CN202579789U (en) | 2012-03-23 | 2012-03-23 | Jacking-pulling type hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220112732 CN202579789U (en) | 2012-03-23 | 2012-03-23 | Jacking-pulling type hydraulic buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579789U true CN202579789U (en) | 2012-12-05 |
Family
ID=47249203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220112732 Expired - Lifetime CN202579789U (en) | 2012-03-23 | 2012-03-23 | Jacking-pulling type hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579789U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635662A (en) * | 2012-03-23 | 2012-08-15 | 施亨庆 | Top-pull-type hydraulic buffer |
| CN104134557A (en) * | 2013-06-09 | 2014-11-05 | 国家电网公司 | Spring operating mechanism buffer for circuit breaker |
| CN105074263A (en) * | 2013-03-28 | 2015-11-18 | 萱场工业株式会社 | Hydraulic shock absorber and method of injecting work fluid into hydraulic shock absorber |
| CN109760354A (en) * | 2019-01-04 | 2019-05-17 | 安徽天水液压机床科技有限公司 | A kind of four-column hydraulic press and its application method |
| CN110480078A (en) * | 2019-09-27 | 2019-11-22 | 杭州丰源铜业有限公司 | A kind of double milling machinery processing apparatus of copper joint of pressure gage pneumatic type double-pole |
-
2012
- 2012-03-23 CN CN 201220112732 patent/CN202579789U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635662A (en) * | 2012-03-23 | 2012-08-15 | 施亨庆 | Top-pull-type hydraulic buffer |
| CN105074263A (en) * | 2013-03-28 | 2015-11-18 | 萱场工业株式会社 | Hydraulic shock absorber and method of injecting work fluid into hydraulic shock absorber |
| CN105074263B (en) * | 2013-03-28 | 2017-03-15 | Ｋｙｂ株式会社 | Hydraulic bjuffer and the method for implanting to hydraulic bjuffer injection working solution |
| CN104134557A (en) * | 2013-06-09 | 2014-11-05 | 国家电网公司 | Spring operating mechanism buffer for circuit breaker |
| CN104134557B (en) * | 2013-06-09 | 2017-02-08 | 国家电网公司 | Spring operating mechanism buffer for circuit breaker |
| CN109760354A (en) * | 2019-01-04 | 2019-05-17 | 安徽天水液压机床科技有限公司 | A kind of four-column hydraulic press and its application method |
| CN110480078A (en) * | 2019-09-27 | 2019-11-22 | 杭州丰源铜业有限公司 | A kind of double milling machinery processing apparatus of copper joint of pressure gage pneumatic type double-pole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20141203 |
|
| RGAV | Abandon patent right to avoid regrant |