CN1737382A - Dust-proof type hydraulic ram - Google Patents
Dust-proof type hydraulic ram Download PDFInfo
- Publication number
- CN1737382A CN1737382A CN 200510044667 CN200510044667A CN1737382A CN 1737382 A CN1737382 A CN 1737382A CN 200510044667 CN200510044667 CN 200510044667 CN 200510044667 A CN200510044667 A CN 200510044667A CN 1737382 A CN1737382 A CN 1737382A
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- oil
- outlet
- oil inlet
- piston rod
- piston
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Abstract
This invention discloses a dust-proof hydraulic oil cylinder, which comprises cylinder, piston, piston pillar and cylinder cover, wherein the piston is inside the cylinder and connected with the piston pillar, between the piston and cylinder it is oil sealed; the outside of the cylinder has a protective cover connected with the piston pillar, between the protective cover and the cylinder it has sealing carded felt; said protective cover is a telescope cover which can increase the sealing of the hydraulic oil cylinder and increase the dust-proof effect; the place where oil inlet and outlet is set according to the structure of the oil cylinder.
Description
Technical field
The present invention relates to a kind of hydraulic jack, in particular, relate to dust-proof type hydraulic ram.
Background technique
As a kind of mechanical component commonly used; hydraulic jack has obtained using widely at mechanical field; the hydraulic cylinder piston rod of current employing is sealed with three parts; wherein two Sealings are used for oil sealing; another dust ring is used for stopping extraneous dust; the dustproof effect of dust ring is that the elastic force by dust ring combines closely dust ring and piston rod to produce; piston rod is in to-and-fro motion; dust ring is just to the dust attached to piston rod surface; moisture films etc. are scraped crowded; with dust; dirts such as water stop; but in long-term the use; some small particles can damage oil sealing and piston rod, compare under the condition of severe, outside piston rod is directly exposed in external environment; be collided easily and damage, cause distortion; leakage of oil.
Summary of the invention
The dust-proof type hydraulic ram that the purpose of this invention is to provide a kind of good dustproof effect, long service life, can effectively avoid piston rod to sustain damage.
For achieving the above object; the technical solution adopted in the present invention is: dust-proof type hydraulic ram; comprise cylinder body, piston, piston rod, cylinder cap; described piston places in the cylinder body and with piston rod fixedlys connected; it between described piston and the cylinder body oil seal; it is characterized in that: the outside of described cylinder body is provided with safety cover, and described safety cover is fixedlyed connected with piston rod.
Below be the improvement of such scheme:
Described oil cylinder is provided with first oil inlet and outlet and second oil inlet and outlet, and described first oil inlet and outlet communicates with the lower oil chamber that is positioned at the piston bottom, and described second oil inlet and outlet communicates with the upper chamber that is positioned at piston top.
Described first oil inlet and outlet is located at cylinder base, and described second oil inlet and outlet is located on the piston rod, is provided with oil duct in the described piston rod, and the upper end portion of described piston rod is provided with oil inlet and outlet, and described second oil inlet and outlet communicates with oil inlet and outlet by oil duct.
Described first oil inlet and outlet is located at cylinder base, described second oil inlet and outlet is located near on the piston rod of piston, be provided with oil duct in the described piston rod, described oil duct communicates with upper chamber by second oil inlet and outlet, is provided with oil pipe in the described oil duct, described oil pipe and oil duct bottom oil seal, described cylinder base is provided with oil duct, described cylinder base is provided with oil inlet and outlet, and described second oil inlet and outlet, oil duct, oil pipe, oil duct, oil inlet and outlet oil are communicated with described oil pipe and oil duct oil seal.
Described first oil inlet and outlet is located at the underpart of piston rod, be provided with oil duct in the described piston rod, the upper end portion of described piston rod is provided with oil inlet and outlet, described first oil inlet and outlet, oil duct, oil inlet and outlet oil are communicated with, described second oil inlet and outlet is located near on the piston rod of piston, be provided with oil duct in the described piston rod, the upper end portion of described piston rod is provided with oil inlet and outlet, and described second oil inlet and outlet, oil duct, oil inlet and outlet oil are communicated with.
Described first oil inlet and outlet is located at the underpart of piston rod, described second oil inlet and outlet is located near on the piston rod of piston, be provided with oil duct in the described piston rod, the upper end portion of described piston rod is provided with oil inlet and outlet, described second oil inlet and outlet, oil duct, oil inlet and outlet oil are communicated with, be provided with oil pipe in the described oil duct, the upper end portion of described piston rod is provided with oil inlet and outlet, and described first oil inlet and outlet, oil pipe, oil inlet and outlet oil are communicated with.
Described safety cover is provided with vent, and described vent is provided with filter cleaner and one-way valve.
Be provided with the sealing felt between described safety cover and the cylinder body.
Between described safety cover and the piston rod for fixedlying connected.
Described safety cover is telescopic safety cover.
Beneficial effect: the present invention adopts said structure; the outside of cylinder body is provided with safety cover; safety cover is fixedlyed connected with piston rod; described safety cover is provided with vent; described vent is provided with filter cleaner and one-way valve; be provided with the sealing felt between safety cover and the cylinder body; described safety cover is telescopic safety cover; strengthen the sealing of hydraulic jack, further stopped entering of dust, improved dustproof effect; effectively avoided touching of outer bound pair hydraulic cylinder piston rod; prolonged working life, the position of oil inlet and outlet has made full use of the structure of oil cylinder itself, and it is more reasonable to design.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the structural representation of the embodiment of the invention 1;
Accompanying drawing 2 is the structural representation of the embodiment of the invention 2;
Accompanying drawing 3 is the structural representation of the embodiment of the invention 3;
Accompanying drawing 4 is the structural representation of the embodiment of the invention 4;
Accompanying drawing 5 is the structural representation of the embodiment of the invention 5.
Embodiment
Embodiment 2; as shown in Figure 2; dust-proof type hydraulic ram; comprise cylinder body 1; piston 2; piston rod 3; cylinder cap 4; following jaw 11; last jaw 12; piston 2 places in the cylinder body 1 and with piston rod 3 fixedlys connected; be oil seal between piston 2 and the cylinder body 1; the outside of cylinder body 1 is provided with safety cover 8; safety cover 8 is fixedlyed connected with piston rod 3; oil cylinder is provided with first oil inlet and outlet 9 and second oil inlet and outlet 10; first oil inlet and outlet 9 communicates with the lower oil chamber 5 that is positioned at piston 2 bottoms; second oil inlet and outlet 10 communicates with the upper chamber 6 that is positioned at piston 2 tops; first oil inlet and outlet 9 is located at cylinder body 1 bottom; second oil inlet and outlet 10 is located near on the piston rod 3 of piston 2; be provided with oil duct 15 in the piston rod 3; oil duct 15 communicates with upper chamber 6 by second oil inlet and outlet 10; be provided with oil pipe 16 in the oil duct 15; oil pipe 16 and oil duct 15 bottom oil seals; cylinder body 1 bottom is provided with oil duct 18; cylinder body 1 bottom is provided with oil inlet and outlet 19; second oil inlet and outlet 10; oil duct 15; oil pipe 16; oil duct 18; oil inlet and outlet 19 oil are communicated with; oil pipe 16 and oil duct 18 oil seals; safety cover 8 is provided with vent 29; vent 29 is provided with filter cleaner and one-way valve, is provided with sealing felt 30 between safety cover 8 and the cylinder body 1, during use; to descend jaw 11; last jaw 12 is fixing respectively; hydraulic oil enters lower oil chamber 5 from first oil inlet and outlet 9, and the hydraulic oil of upper chamber 6 is through second oil inlet and outlet 10; oil duct 15; oil pipe 16; oil duct 18; oil inlet and outlet 19 is discharged, and piston rod 3 just rises under the pressure of hydraulic oil; otherwise, then descend.
Claims (10)
1, dust-proof type hydraulic ram; comprise cylinder body (1), piston (2), piston rod (3), cylinder cap (4); described piston (2) places in the cylinder body (1) and with piston rod (3) fixedlys connected; between described piston (2) and the cylinder body (1) is oil seal; it is characterized in that: the outside of described cylinder body (1) is provided with safety cover (8), and described safety cover (8) is fixedlyed connected with piston rod (3).
2, dust-proof type hydraulic ram as claimed in claim 1, it is characterized in that: described oil cylinder is provided with the-oil inlet and outlet (9) and second oil inlet and outlet (10), described first oil inlet and outlet (9) communicates with the lower oil chamber (5) that is positioned at piston (2) bottom, and described second oil inlet and outlet (10) communicates with the upper chamber (6) that is positioned at piston (2) top.
3, dust-proof type hydraulic ram as claimed in claim 2, it is characterized in that: described first oil inlet and outlet (9) is located at cylinder body (1) bottom, described second oil inlet and outlet (10) is located on the piston rod (3), be provided with oil duct (13) in the described piston rod (3), the upper end portion of described piston rod (3) is provided with oil inlet and outlet (14), and described second oil inlet and outlet (10) communicates with oil inlet and outlet (14) by oil duct (13).
4, dust-proof type hydraulic ram as claimed in claim 2, it is characterized in that: described first oil inlet and outlet (9) is located at cylinder body (1) bottom, described second oil inlet and outlet (10) is located near on the piston rod (3) of piston (2), be provided with oil duct (15) in the described piston rod (3), described oil duct (15) communicates with upper chamber (6) by second oil inlet and outlet (10), be provided with oil pipe (16) in the described oil duct (15), described oil pipe (16) and oil duct (15) bottom oil seal, described cylinder body (1) bottom is provided with oil duct (18), described cylinder body (1) bottom is provided with oil inlet and outlet (19), described second oil inlet and outlet (10), oil duct (15), oil pipe (16), oil duct (18), oil inlet and outlet (19) oil is communicated with, described oil pipe (16) and oil duct (18) oil seal.
5, dust-proof type hydraulic ram as claimed in claim 2, it is characterized in that: described first oil inlet and outlet (9) is located at the underpart of piston rod (3), be provided with oil duct (21) in the described piston rod (3), the upper end portion of described piston rod (3) is provided with oil inlet and outlet (22), described first oil inlet and outlet (9), oil duct (21), oil inlet and outlet (22) oil is communicated with, described second oil inlet and outlet (10) is located near on the piston rod (3) of piston (2), be provided with oil duct (23) in the described piston rod (3), the upper end portion of described piston rod (3) is provided with oil inlet and outlet (24), described second oil inlet and outlet (10), oil duct (23), oil inlet and outlet (24) oil is communicated with.
6, dust-proof type hydraulic ram as claimed in claim 2, it is characterized in that: described first oil inlet and outlet (9) is located at the underpart of piston rod (3), described second oil inlet and outlet (10) is located near on the piston rod (3) of piston (2), be provided with oil duct (25) in the described piston rod (3), the upper end portion of described piston rod (3) is provided with oil inlet and outlet (26), described second oil inlet and outlet (10), oil duct (25), oil inlet and outlet (26) oil is communicated with, be provided with oil pipe (27) in the described oil duct (25), the upper end portion of described piston rod (3) is provided with oil inlet and outlet (28), described first oil inlet and outlet (9), oil pipe (27), oil inlet and outlet (28) oil is communicated with.
7, as claim 3 or 4 or 5 or 6 described dust-proof type hydraulic rams, it is characterized in that: described safety cover (8) is provided with vent (29), and described vent (29) is provided with filter cleaner and one-way valve.
8, dust-proof type hydraulic ram as claimed in claim 7 is characterized in that: be provided with sealing felt (30) between described safety cover (8) and the cylinder body (1).
9, dust-proof type hydraulic ram as claimed in claim 8 is characterized in that: described safety cover (8) and piston rod (3) are for fixedlying connected.
10, dust-proof type hydraulic ram as claimed in claim 9 is characterized in that: described safety cover (8) is telescopic safety cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044667 CN1737382A (en) | 2005-09-09 | 2005-09-09 | Dust-proof type hydraulic ram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044667 CN1737382A (en) | 2005-09-09 | 2005-09-09 | Dust-proof type hydraulic ram |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1737382A true CN1737382A (en) | 2006-02-22 |
Family
ID=36080290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510044667 Pending CN1737382A (en) | 2005-09-09 | 2005-09-09 | Dust-proof type hydraulic ram |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1737382A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278335A (en) * | 2011-07-20 | 2011-12-14 | 岳立辉 | Sliding type protective cover for oil cylinder |
| CN106321564A (en) * | 2015-06-30 | 2017-01-11 | 舍弗勒技术股份两合公司 | Protective sleeve for a hydraulic unit and hydraulic unit assembly comprising a protective sleeve |
| CN107298409A (en) * | 2017-06-20 | 2017-10-27 | 安徽合力股份有限公司 | A kind of pallet fork with Telescopic |
| CN107461377A (en) * | 2017-09-10 | 2017-12-12 | 英立（江苏）机电有限公司 | A kind of dustproof cooling hydraulic press |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
| CN111577700A (en) * | 2020-04-03 | 2020-08-25 | 武汉船用机械有限责任公司 | Sealing device of hydraulic oil cylinder and hydraulic oil cylinder |
| CN113027855A (en) * | 2021-03-08 | 2021-06-25 | 安徽鼎图液压设备有限公司 | Hydraulic oil cylinder with protective cover |
| CN116658392A (en) * | 2023-07-26 | 2023-08-29 | 德州学院 | Hydraulic cylinder assembly for hydraulic profile control injection equipment and elastic cover processing equipment |
-
2005
- 2005-09-09 CN CN 200510044667 patent/CN1737382A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278335A (en) * | 2011-07-20 | 2011-12-14 | 岳立辉 | Sliding type protective cover for oil cylinder |
| CN106321564A (en) * | 2015-06-30 | 2017-01-11 | 舍弗勒技术股份两合公司 | Protective sleeve for a hydraulic unit and hydraulic unit assembly comprising a protective sleeve |
| CN107298409A (en) * | 2017-06-20 | 2017-10-27 | 安徽合力股份有限公司 | A kind of pallet fork with Telescopic |
| CN107298409B (en) * | 2017-06-20 | 2023-03-14 | 安徽合力股份有限公司 | Fork with flexible function |
| CN107461377A (en) * | 2017-09-10 | 2017-12-12 | 英立（江苏）机电有限公司 | A kind of dustproof cooling hydraulic press |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
| CN111577700A (en) * | 2020-04-03 | 2020-08-25 | 武汉船用机械有限责任公司 | Sealing device of hydraulic oil cylinder and hydraulic oil cylinder |
| CN113027855A (en) * | 2021-03-08 | 2021-06-25 | 安徽鼎图液压设备有限公司 | Hydraulic oil cylinder with protective cover |
| CN116658392A (en) * | 2023-07-26 | 2023-08-29 | 德州学院 | Hydraulic cylinder assembly for hydraulic profile control injection equipment and elastic cover processing equipment |
| CN116658392B (en) * | 2023-07-26 | 2023-09-29 | 德州学院 | Hydraulic cylinder assembly for hydraulic profile control injection equipment and elastic cover processing equipment |
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