CN203214486U - Hydraulic cylinder - Google Patents
Hydraulic cylinder Download PDFInfo
- Publication number
- CN203214486U CN203214486U CN 201320106112 CN201320106112U CN203214486U CN 203214486 U CN203214486 U CN 203214486U CN 201320106112 CN201320106112 CN 201320106112 CN 201320106112 U CN201320106112 U CN 201320106112U CN 203214486 U CN203214486 U CN 203214486U
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- flowing channel
- piston
- runner
- cavity
- boss
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Abstract
The utility model discloses a hydraulic cylinder. The hydraulic cylinder comprises a piston, a cylinder cover, and an oil outlet formed in the cylinder cover, wherein a boss is arranged on the piston; a concave cavity is formed in the cylinder cover, an annular gap delta is formed between the boss and the concave cavity; a first flowing channel is formed between the concave cavity and the oil outlet; a second flowing channel and a third flowing channel are symmetrically distributed in the cylinder cover along the concave cavity; a first check valve is arranged on the second flowing channel; a second check valve is arranged on the third flowing channel; the second flowing channel is communicated with the first flowing channel; the third flowing channel is communicated with the first flowing channel. The hydraulic cylinder disclosed by the utility model is capable of effectively preventing the occurrence of the phenomenon that the piston impacts the cylinder cover due to too high speed while running to the tail end of the stroke during a return stroke, and rapidly starting when the piston needs to move forwards, and is safe, and high in efficiency.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder.
Background technique
Oil hydraulic cylinder is as a kind of hydraulic actuator, and during to end of travel, speed is still very high, will clash into cylinder cap, causes hydraulic shock and noise, even the phenomenon of damaging at homeward journey for piston.Existing a kind of clearance type damping device reduces fuel-displaced flow by control, increases back oil cavity pressure, thereby reaches the purpose of the piston travelling backwards speed that slows down.But when driving parts, piston needs motion forward, at this moment oil outlet becomes filler opening, the hydraulic oil that has certain pressure enters inward, because the boss on the piston and the cavity on the cylinder cap have certain clearance, cause hydraulic oil toward the gap seepage, can't concentrate the hydraulic pressure momentum effect on the piston boss, thus also just cause piston forward movement rate slow down, influence working efficiency.
The model utility content
For solving the problems of the technologies described above, the utility model provides a kind of cylinder cap that both can prevent from clashing into, again oil hydraulic cylinder capable of fast starting.
For achieving the above object, the technical solution of the utility model is: a kind of oil hydraulic cylinder, comprise piston, cylinder cap and be arranged on oil outlet on the cylinder cap, piston is provided with boss, cylinder cap is provided with cavity, there is annular gap δ between boss and the cavity, be provided with first flow between cavity and the oil outlet, be symmetrically distributed with second runner and the 3rd runner along cavity in the cylinder cap, second runner is provided with first one-way valve, the 3rd runner is provided with second one-way valve, and second runner communicates with first flow, and the 3rd runner communicates with first flow.
The beneficial effects of the utility model are: both prevented effectively that backward stroke of the piston from moving to end of travel clashes into the cylinder cap phenomenon because speed is too high generation, and when piston need move forward, capable of fast starting again simultaneously, safety, efficient height.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: piston 1, cylinder cap 2, oil outlet 3, boss 4, cavity 5, first flow 61, second runner 62, the 3rd runner 63, first one-way valve 71, second one-way valve 72.
Embodiment
Below in conjunction with accompanying drawing, and in conjunction with the embodiments, the utility model is described further.
Embodiment:
As shown in Figure 1, a kind of oil hydraulic cylinder, comprise piston 1, cylinder cap 2 and be arranged on oil outlet 3 on the cylinder cap 2, piston 1 is provided with boss 4, cylinder cap 2 is provided with cavity 5, there is annular gap δ between boss 4 and the cavity 5, be provided with first flow 61 between cavity 5 and the oil outlet 3, be symmetrically distributed with second runner 62 and the 3rd runner 63 along cavity 5 in the cylinder cap 2, second runner 62 is provided with first one-way valve 71, the 3rd runner 63 is provided with second one-way valve, 72, the second runners 62 and communicates with first flow 61, and the 3rd runner 63 communicates with first flow 61.
Working principle of the present utility model is: when piston 1 backhaul, boss 4 enters cavity 5, to push away the annular gap δ of fluid between boss 4 and cavity 5 that be enclosed in the oil back chamber, pressure is raise and form compensator or trimmer pressure, thereby make piston 1 travelling speed that slowed down; When driving parts, piston 1 needs motion forward, at this moment oil outlet 3 becomes filler opening, the hydraulic oil that has certain pressure enters inward, certain flow hydraulic oil is branched in second runner 62 and the 3rd runner 63 at first flow 61 places, and respectively by acting directly on piston 1 surface jointly behind first one-way valve 71, second one-way valve 72, thereby reach the effect of quick startup.
Claims (1)
1. oil hydraulic cylinder, comprise piston (1), cylinder cap (2) and be arranged on oil outlet (3) on the described cylinder cap (2), described piston (1) is provided with boss (4), described cylinder cap (2) is provided with cavity (5), there is annular gap δ between described boss (4) and the cavity (5), be provided with first flow (61) between described cavity (5) and the oil outlet (3), it is characterized in that: be symmetrically distributed with second runner (62) and the 3rd runner (63) along cavity (5) in the described cylinder cap (2), described second runner (62) is provided with first one-way valve (71), described the 3rd runner (63) is provided with second one-way valve (72), described second runner (62) communicates with first flow (61), and described the 3rd runner (63) communicates with first flow (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320106112 CN203214486U (en) | 2013-03-08 | 2013-03-08 | Hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320106112 CN203214486U (en) | 2013-03-08 | 2013-03-08 | Hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214486U true CN203214486U (en) | 2013-09-25 |
Family
ID=49204030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320106112 Expired - Fee Related CN203214486U (en) | 2013-03-08 | 2013-03-08 | Hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214486U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939420A (en) * | 2013-09-30 | 2014-07-23 | 湖北江山液压科技有限公司 | Hydraulic cylinder constant throttling buffering device |
| CN117249144A (en) * | 2023-11-15 | 2023-12-19 | 常州市振跃液压机械有限公司 | Hydraulic cylinder with buffer performance for engineering machinery |
-
2013
- 2013-03-08 CN CN 201320106112 patent/CN203214486U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939420A (en) * | 2013-09-30 | 2014-07-23 | 湖北江山液压科技有限公司 | Hydraulic cylinder constant throttling buffering device |
| CN103939420B (en) * | 2013-09-30 | 2016-07-13 | 湖北江山液压科技有限公司 | A kind of hydraulic cylinder perseverance throttling buffering device |
| CN117249144A (en) * | 2023-11-15 | 2023-12-19 | 常州市振跃液压机械有限公司 | Hydraulic cylinder with buffer performance for engineering machinery |
| CN117249144B (en) * | 2023-11-15 | 2024-01-26 | 常州市振跃液压机械有限公司 | Hydraulic cylinder with buffer performance for engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140308 |