CN201908889U - Variable-throttling buffer hydraulic cylinder - Google Patents
Variable-throttling buffer hydraulic cylinder Download PDFInfo
- Publication number
- CN201908889U CN201908889U CN2010206811835U CN201020681183U CN201908889U CN 201908889 U CN201908889 U CN 201908889U CN 2010206811835 U CN2010206811835 U CN 2010206811835U CN 201020681183 U CN201020681183 U CN 201020681183U CN 201908889 U CN201908889 U CN 201908889U
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- piston
- throttling
- buffer stopper
- throttling buffer
- cylinder
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Abstract
The utility model relates to a variable-throttling buffer hydraulic cylinder, which belongs to the technical field of hydraulic cylinder buffers. The technical problem to be solved is to reach the aims that the variable-throttling buffer hydraulic cylinder can occupy small space and effectively carry out buffering. In the adopted technical scheme, a cylinder cover is fixed on one end of a cylinder barrel, a piston is sleeved in the cylinder barrel, one end of a piston rod is mounted on the piston, the end of the piston rod, which is connected with the piston, is hollow, the center of the piston is provided with a through hole, and a buffer assembly is arranged in the through hole of the center of the piston; the buffer assembly comprises a shaft check ring, a spring and a throttling buffer block, the throttling buffer block is hollow, one end of the throttling buffer block is cylindrical, the other end of the throttling buffer block is conical, the cylindrical part is provided with a plurality of throttling holes, the shaft check ring is mounted on the tail of the cylindrical end of the throttling buffer block, the cylindrical end of the throttling buffer block is mounted in the through hole of the center of the piston, and the spring is clamped between the end surface of the piston and the conical part of the throttling buffer block. The variable-throttling buffer hydraulic cylinder is applicable to cases requiring the smooth operation of hydraulic cylinders.
Description
Technical field
The utility model variable 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, and technical problem to be solved is for providing a kind of variable throttling buffering hydraulic cylinder little and that can effectively cushion that takes up room.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: the variable throttling buffering hydraulic cylinder, comprise piston rod, cylinder barrel, piston, Buffer Unit, cylinder cap and oil outlet, 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, Buffer Unit is arranged in the through hole at piston center, 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 Buffer Unit comprises: shaft block ring, spring and throttling buffer stopper, the throttling buffer stopper is hollow, the one end is cylindrical, the other end is taper, on cylindrical part, have a plurality of throttle orifices, shaft block ring is sleeved on the afterbody of the cylindrical end of throttling buffer stopper, and the columniform end of throttling buffer stopper is sleeved in the through hole at piston center, and spring clip is between piston end surface and throttling buffer stopper tapering part.
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 that throttle orifice, 10 is a Buffer Unit.
Embodiment
Embodiment one
As Fig. 1, shown in Figure 2, a kind of variable throttling buffering hydraulic cylinder, comprise piston rod 1, cylinder barrel 2, piston 3, Buffer Unit 10, cylinder cap 7 and oil outlet 8, 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, Buffer Unit 10 is arranged in the through hole at piston 3 centers, and 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 Buffer Unit 10 comprises: shaft block ring 4, spring 5 and throttling buffer stopper 6, throttling buffer stopper 6 is hollow, the one end is cylindrical, the other end is taper, on cylindrical part, have a plurality of throttle orifices 9, shaft block ring 4 is sleeved on the afterbody of throttling buffer stopper 6 cylindrical ends, and throttling buffer stopper 6 columniform ends are sleeved in the through hole at piston 3 centers, and spring 5 is stuck between piston 3 end faces and throttling buffer stopper 6 tapering parts.
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 shown in Figure 3, Figure 4, a kind of variable throttling buffering hydraulic cylinder, comprise piston rod 1, cylinder barrel 2, piston 3, Buffer Unit 10, cylinder cap 7 and oil outlet 8, 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, Buffer Unit 10 is arranged in the through hole at piston 3 centers, and the oil outlet 8 of rodless cavity is arranged on the center of cylinder cap 7; Described Buffer Unit 10 comprises: shaft block ring 4, spring 5 and throttling buffer stopper 6, throttling buffer stopper 6 is hollow, the one end is cylindrical, the other end is taper, on cylindrical part, have a plurality of throttle orifices 9, shaft block ring 4 is sleeved on the afterbody of throttling buffer stopper 6 cylindrical ends, and throttling buffer stopper 6 columniform ends are sleeved in the through hole at piston 3 centers, and spring 5 is stuck between piston 3 end faces and throttling buffer stopper 6 tapering parts.
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 through oil outlet 8, along with spring 5 is compressed, can reduce gradually by the throttle orifice 9 of fluid, be used in combination with spring 5 and realized the variable throttling buffering.
Claims (3)
1. variable throttling buffering hydraulic cylinder, comprise piston rod (1), cylinder barrel (2), piston (3), Buffer Unit (10), cylinder cap (7) and oil outlet (8), 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, Buffer Unit (10) is arranged in the through hole at piston (3) center, 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); Described Buffer Unit (10) comprising: shaft block ring (4), spring (5) and throttling buffer stopper (6), throttling buffer stopper (6) is hollow, the one end is cylindrical, the other end is taper, on cylindrical part, have a plurality of throttle orifices (9), shaft block ring (4) is sleeved on the afterbody of the cylindrical end of throttling buffer stopper (6), the columniform end of throttling buffer stopper (6) is sleeved in the through hole at piston (3) center, and spring (5) is stuck between piston (3) end face and throttling buffer stopper (6) tapering part.
2. variable throttling buffering hydraulic cylinder according to claim 1 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. variable throttling buffering hydraulic cylinder according to claim 1 and 2 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 |
|---|---|---|---|
| CN2010206811835U CN201908889U (en) | 2010-12-20 | 2010-12-20 | Variable-throttling buffer hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206811835U CN201908889U (en) | 2010-12-20 | 2010-12-20 | Variable-throttling buffer hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908889U true CN201908889U (en) | 2011-07-27 |
Family
ID=44301092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206811835U Expired - Lifetime CN201908889U (en) | 2010-12-20 | 2010-12-20 | Variable-throttling buffer hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654153A (en) * | 2012-05-24 | 2012-09-05 | 重庆迪马工业有限责任公司 | Buffering device for plunger hydraulic cylinder |
| CN116950953A (en) * | 2023-08-03 | 2023-10-27 | 无锡市普亚机械制造有限公司 | Safety type hydraulic cylinder with leakage prevention function |
-
2010
- 2010-12-20 CN CN2010206811835U patent/CN201908889U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654153A (en) * | 2012-05-24 | 2012-09-05 | 重庆迪马工业有限责任公司 | Buffering device for plunger hydraulic cylinder |
| CN116950953A (en) * | 2023-08-03 | 2023-10-27 | 无锡市普亚机械制造有限公司 | Safety type hydraulic cylinder with leakage prevention function |
| CN116950953B (en) * | 2023-08-03 | 2024-03-22 | 李振中 | Safety type hydraulic cylinder with leakage prevention function |
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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: 20110727 |
|
| CX01 | Expiry of patent term |