CN201916281U - Quantitative throttling buffer hydraulic cylinder - Google Patents
Quantitative throttling buffer hydraulic cylinder Download PDFInfo
- Publication number
- CN201916281U CN201916281U CN2010206811680U CN201020681168U CN201916281U CN 201916281 U CN201916281 U CN 201916281U CN 2010206811680 U CN2010206811680 U CN 2010206811680U CN 201020681168 U CN201020681168 U CN 201020681168U CN 201916281 U CN201916281 U CN 201916281U
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- piston
- throttling
- cylinder
- buffer stopper
- piston rod
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Abstract
The utility model relates to a quantitative throttling buffer hydraulic cylinder, which belongs to the technical field of hydraulic cylinder buffer devices and is small in space occupation and capable of realizing effective buffer. The technical scheme includes that a cylinder head is fixed at one end of a cylinder barrel, a piston is sleeved inside the cylinder barrel, one end of a piston rod is mounted on a piston while the other end of the piston rod is arranged outside the cylinder barrel, one end of the piston rod connected with a piston is hollow, a through hole is arranged at the center of the piston, a groove is arranged on an end face of the piston, one end of a hollow throttling buffer block is cylindrical while the other end of the throttling buffer block is conical, a throttling hole is arranged on a cylinder close to the conical portion, another groove is arranged on the bottom surface of the conical portion, the cylindrical end of the throttling buffer block is sleeved in the through hole at the center of the piston, and a spring is clamped between the groove on the end face of the piston and the groove of the conical portion of the throttling buffer block. The quantitative throttling buffer hydraulic cylinder is suitable for places with requirements for stable operation of hydraulic cylinders.
Description
Technical field
The utility model is decided the throttling buffering hydraulic cylinder, belongs to the cylinder cushion device technical field.
Background technique
At present, various with in the engineering machinery of oil hydraulic cylinder as executive component, in limited physical dimension, realize oil hydraulic cylinder execution stable action, not having obvious the impact is the difficult problem that the artificer need solve usually.Oil hydraulic cylinder buffer structure form commonly used at present is an energy snubber method form.The energy snubber method mechanism be that the hydraulic oil that will flow back to fuel tank in the oil hydraulic cylinder low-pressure cavity at last is closed, form the buffering oil pocket, hydraulic oil flows out by slit pattern or throttle orifice pattern in the oil pocket, to reach the purpose of deceleration; Simultaneously, press in the fluid in the buffer cavity produces, realize buffering with the effect of opposing inertial force and other external force.
Chink type buffer commonly used has end cap buffer cavity pattern and two kinds of patterns of cylinder barrel buffer cavity pattern.End cap buffer cavity pattern is that fluid goes out from the cylinder barrel effluent, and buffer cavity is arranged in the end cap, and when buffer plunger stretched into this chamber, fluid flowed out by the gap of buffer plunger, realizes buffering.Cylinder barrel buffer cavity pattern is that fluid is discharged from end cap central authorities, and piston side plays buffer function, and this chamber fluid is discharged by buffer plunger peripheral clearance.Existing throttle orifice pattern comprises porous cylinder barrel pattern and porous plunger pattern, and the distance between the quantity by arranging every row's aperture and each row changes orifice size, thus the buffering of realization.These two kinds of physical dimensions are bigger, and cost is higher, often are difficult to install in limited space.
The model utility content
The utility model overcomes the deficiencies in the prior art, technical problem to be solved for provide a kind of take up room little and can effectively cushion decide the throttling buffering hydraulic cylinder.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: decide the throttling buffering hydraulic cylinder, comprise piston rod, cylinder barrel, piston, shaft block ring, spring, the throttling buffer stopper, cylinder cap, oil outlet and throttle orifice, one end of cylinder barrel is fixed with cylinder cap, piston sleeve is contained in the inside of cylinder barrel, one end of piston rod is installed on the piston, the other end of piston rod is positioned at the cylinder barrel outside, the end that described piston rod is connected with piston is a hollow, described piston center has through hole and have groove on its end face, the throttling buffer stopper is hollow, throttling buffer stopper one end is cylindrical, the other end is taper, having a throttle orifice near on the cylinder of tapering part, also have groove on the bottom surface of its tapering part, the columniform end of throttling buffer stopper is sleeved in the through hole at piston center, shaft block ring is sleeved on the afterbody of the cylindrical end of throttling buffer stopper, and spring clip is between the groove of groove on the piston end surface and throttling buffer stopper tapering part; The oil outlet of rodless cavity or be arranged on the end that piston rod is positioned at the cylinder barrel outside, the oil duct of opening by piston rod inside and the cavity of throttling buffer stopper inside are communicated with rodless cavity, or are arranged on the center of cylinder cap.
Described spring is a volute spring, and its end with big circumference withstands on the piston, and its end with small circumference withstands on the throttling buffer stopper.
The end face of described throttling buffer stopper taper one end is provided with a circle boss.
The beneficial effect that the utility model is compared with prior art had is:
1, adopted volute spring, volute spring is compared with helical spring, has bigger lateral stability, vibration frequency is a variate, can prevent the generation of resonance phenomenon, avoid occurring pressure pulse and too high buffer cavity pressure peak, make the progressive formation that is changed to of pressure.
2, compact structure owing to the compressibility of cone shaped spring, has been saved the transverse dimension of traditional buffer plunger, has reduced cushion stroke.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation before the utility model embodiment one buffering;
Fig. 2 is the structural representation after the utility model embodiment one buffering;
Fig. 3 is the structural representation before the utility model embodiment two bufferings;
Fig. 4 is the structural representation after the utility model embodiment two bufferings.
Among the figure: 1 is that piston rod, 2 is that cylinder barrel, 3 is that piston, 4 is that shaft block ring, 5 is that spring, 6 is that throttling buffer stopper, 7 is that cylinder cap, 8 is that oil outlet, 9 is a throttle orifice.
Embodiment
Embodiment one
As Fig. 1, shown in Figure 2, a kind ofly decide the throttling buffering hydraulic cylinder, comprise piston rod 1, cylinder barrel 2, piston 3, shaft block ring 4, spring 5, throttling buffer stopper 6, cylinder cap 7, oil outlet 8 and throttle orifice 9, one end of cylinder barrel 2 is fixed with cylinder cap 7, piston 3 is sleeved on the inside of cylinder barrel 2, one end of piston rod 1 is installed on the piston 3, the other end of piston rod 1 is positioned at the cylinder barrel outside, the end that described piston rod 1 is connected with piston 3 is a hollow, described piston 3 centers have through hole and have groove on its end faces, throttling buffer stopper 6 is hollow, throttling buffer stopper 6 one ends are cylindrical, the other end is taper, having a throttle orifice 9 near on the cylinder of tapering part, also have groove on the bottom surface of its tapering part, throttling buffer stopper 6 columniform ends are sleeved in the through hole at piston 3 centers, shaft block ring 4 is sleeved on the afterbody of throttling buffer stopper 6 cylindrical ends, and spring 5 is stuck between the groove of groove on piston 3 end faces and throttling buffer stopper 6 tapering parts; The oil outlet 8 of rodless cavity is arranged on the end that piston rod 1 is positioned at the cylinder barrel outside, and the oil duct of opening by piston rod 1 inside and the cavity of throttling buffer stopper 6 inside are communicated with rodless cavity.
Described spring 5 is a volute spring, and its end with big circumference withstands on the piston 3, and its end with small circumference withstands on the throttling buffer stopper 6.
The end face of described throttling buffer stopper 6 tapers one end is provided with a circle boss.
Embodiment two
As Fig. 3, shown in Figure 4, a kind ofly decide the throttling buffering hydraulic cylinder, comprise piston rod 1, cylinder barrel 2, piston 3, shaft block ring 4, spring 5, throttling buffer stopper 6, cylinder cap 7, oil outlet 8 and throttle orifice 9, one end of cylinder barrel 2 is fixed with cylinder cap 7, piston 3 is sleeved on the inside of cylinder barrel 2, one end of piston rod 1 is installed on the piston 3, the other end of piston rod 1 is positioned at the cylinder barrel outside, the end that described piston rod 1 is connected with piston 3 is a hollow, described piston 3 centers have through hole and have groove on its end faces, throttling buffer stopper 6 is hollow, throttling buffer stopper 6 one ends are cylindrical, the other end is taper, having a throttle orifice 9 near on the cylinder of tapering part, also have groove on the bottom surface of its tapering part, throttling buffer stopper 6 columniform ends are sleeved in the through hole at piston 3 centers, described shaft block ring 4 is sleeved on the afterbody of throttling buffer stopper 6 cylindrical ends, and described spring 5 is stuck between the groove of groove on piston 3 end faces and throttling buffer stopper 6 tapering parts; The oil outlet 8 of rodless cavity is arranged on the center of cylinder cap 7.
Described spring 5 is a volute spring, and its end with big circumference withstands on the piston 3, and its end with small circumference withstands on the throttling buffer stopper 6.
The end face of described throttling buffer stopper 6 tapers one end is provided with a circle boss.
Working procedure of the present utility model is: when piston 3 when cylinder cap 7 directions are moved, throttling buffer stopper 6 under the effect of shaft block ring 4 and spring 5 also along with piston 3 moves to cylinder cap 7 directions, fluid or the oil outlet 8 through being arranged on the cylinder cap 7 flow back to fuel tank, or through throttling buffer stopper 6 inside, piston rod 1 inside, oil outlet 8 flows back to fuel tank, when throttling buffer stopper 6 and cylinder cap 7 Planar Compound, form the buffering oil pocket in the rodless cavity, the fluid that is closed can only pass through throttle orifice 9 earlier, discharging, be used in combination with spring 5 and realized the throttling buffering through oil outlet 8.
Claims (3)
1. decide the throttling buffering hydraulic cylinder, comprise piston rod (1), cylinder barrel (2), piston (3), shaft block ring (4), spring (5), throttling buffer stopper (6), cylinder cap (7), oil outlet (8) and throttle orifice (9), one end of cylinder barrel (2) is fixed with cylinder cap (7), piston (3) is sleeved on the inside of cylinder barrel (2), one end of piston rod (1) is installed on the piston (3), the other end of piston rod (1) is positioned at the cylinder barrel outside, it is characterized in that: a end that described piston rod (1) is connected with piston (3) is a hollow, described piston (3) center has through hole and have groove on its end face, throttling buffer stopper (6) is hollow, throttling buffer stopper (6) one ends are cylindrical, the other end is taper, having a throttle orifice (9) near on the cylinder of tapering part, also have groove on the bottom surface of its tapering part, the columniform end of throttling buffer stopper (6) is sleeved in the through hole at piston (3) center, shaft block ring (4) is sleeved on the afterbody of the cylindrical end of throttling buffer stopper (6), and spring (5) is stuck between the groove of groove on piston (3) end face and throttling buffer stopper (6) tapering part; The oil outlet of rodless cavity (8) or be arranged on the end that piston rod (1) is positioned at the cylinder barrel outside, oil duct and the inner cavity of throttling buffer stopper (6) opened by piston rod (1) inside are communicated with rodless cavity, or are arranged on the center of cylinder cap (7).
2. according to claim 1ly decide the throttling buffering hydraulic cylinder, it is characterized in that: described spring (5) is a volute spring, and its end with big circumference withstands on the piston (3), and its end with small circumference withstands on the throttling buffer stopper (6).
3. according to claim 1 and 2ly decide the throttling buffering hydraulic cylinder, it is characterized in that: the end face of described throttling buffer stopper (6) taper one end is provided with a circle boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206811680U CN201916281U (en) | 2010-12-20 | 2010-12-20 | Quantitative throttling buffer hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206811680U CN201916281U (en) | 2010-12-20 | 2010-12-20 | Quantitative throttling buffer hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201916281U true CN201916281U (en) | 2011-08-03 |
Family
ID=44416078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206811680U Expired - Lifetime CN201916281U (en) | 2010-12-20 | 2010-12-20 | Quantitative throttling buffer hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201916281U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943786A (en) * | 2012-12-11 | 2013-02-27 | 湖南特力液压有限公司 | Hydraulic cylinder |
| CN108799248A (en) * | 2018-09-04 | 2018-11-13 | 湖南五新隧道智能装备股份有限公司 | A kind of cushion cylinder and its damper piston assembly |
| 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 |
| CN110388352A (en) * | 2019-08-06 | 2019-10-29 | 扬州大山液压气动制造有限公司 | Multistage hydraulic cylinder |
-
2010
- 2010-12-20 CN CN2010206811680U patent/CN201916281U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943786A (en) * | 2012-12-11 | 2013-02-27 | 湖南特力液压有限公司 | Hydraulic cylinder |
| CN102943786B (en) * | 2012-12-11 | 2015-08-12 | 湖南特力液压有限公司 | Oil hydraulic cylinder |
| CN108799248A (en) * | 2018-09-04 | 2018-11-13 | 湖南五新隧道智能装备股份有限公司 | A kind of cushion cylinder and its damper piston assembly |
| CN108799248B (en) * | 2018-09-04 | 2023-11-21 | 湖南五新隧道智能装备股份有限公司 | Buffer cylinder and buffer piston assembly thereof |
| 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 |
| CN110388352A (en) * | 2019-08-06 | 2019-10-29 | 扬州大山液压气动制造有限公司 | Multistage hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
|
| CX01 | Expiry of patent term |