CN202140371U - Hydraulic oil cylinder - Google Patents
Hydraulic oil cylinder Download PDFInfo
- Publication number
- CN202140371U CN202140371U CN201120288381U CN201120288381U CN202140371U CN 202140371 U CN202140371 U CN 202140371U CN 201120288381 U CN201120288381 U CN 201120288381U CN 201120288381 U CN201120288381 U CN 201120288381U CN 202140371 U CN202140371 U CN 202140371U
- Authority
- CN
- China
- Prior art keywords
- piston
- piston rod
- hydraulic jack
- cylinder barrel
- end cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic oil cylinder, which comprises a cylinder tube, a front end cover and a rear end cover. A piston and a piston rod are arranged in the cylinder tube, a drawing rod for connecting the front end cover and the rear end cover and fixing the cylinder tube is arranged on the periphery of the cylinder tube. Through holes corresponding to the drawing rod are arranged at four corners of the front end cover and the rear end cover. A pressing cover convenient to maintain is further arranged at the edge of the front end cover, and through holes corresponding to the drawing rod are arranged at four corners of the pressing cover. Abrasion resistant hard chromium plating layers are added on the outer surface of the piston rod and the inner surface of the cylinder tube. The hydraulic oil cylinder is long in service life and convenient to maintain.
Description
Technical field
The utility model relates to the hydraulics field, particularly a kind of hydraulic jack.
Background technique
Hydraulic jack is in hydraulic jack, to squeeze into hydraulic oil by power source (manual hydraulic oil pump, electric hydaulic oil pump), and the piston rod of hydraulic jack produces straight line motion, and hydraulic jack is an executive component, is hydraulic pressure can be converted into motion.Existing hydraulic jack; Comprise cylinder barrel and front and rear cover thereof, be provided with piston rod and piston in the cylinder barrel, be provided with the pull bar of connection front and rear cover and stator bore in the periphery of cylinder barrel; On four jiaos of front and rear cover, be provided with the through hole corresponding with pull bar; Existing hydraulic jack front cover is a disjunctor, and maintenance is inconvenient, and poor sealing performance even working life are short.
The model utility content
The technical problem that the utility model will solve is the deficiency that overcomes existing technology, and a kind of long lifetime, hydraulic jack easy to maintenance are provided.
The technological scheme that realizes the utility model is: a kind of hydraulic jack; Comprise cylinder barrel and front and rear cover thereof; Be provided with piston rod and piston in the cylinder barrel, be provided with the pull bar that connects front and rear cover and stator bore, on four jiaos of front and rear cover, be provided with the through hole corresponding with pull bar in the periphery of cylinder barrel; Described front cover end also is provided with the gland of convenient for maintaining, also is provided with the through hole corresponding with pull bar on four jiaos of gland; The internal surface of described piston rod outer surface and cylinder barrel has increased wear-resisting hard chromium.
Further: in above-mentioned hydraulic jack, be provided with the bar portion circle that seals at the front end of piston rod; Be provided with the combination dust ring that not only seals but also dustproof effect is arranged in the joint of front cover and tailpiece of the piston rod.Described piston two ends are provided with piston ring.Described bar portion circle, dust ring and piston ring all are polyurethane circles.
Compared with prior art, the hydraulic jack front cover end that the utility model provides also is provided with the gland of convenient for maintaining, also is provided with the through hole corresponding with pull bar on four jiaos of gland; The internal surface of described piston rod outer surface and cylinder barrel has increased wear-resisting hard chromium.What be that front end establishes is gland structure, and maintenance easily; The internal surface of piston rod outer surface and cylinder barrel has increased wear-resisting hard chromium, has increased the working life of oil cylinder.Dust ring is a combined sealing structure, forms double seal by bar portion circle and dust ring, has increased the sealability of oil cylinder.Bar portion circle, dust ring and piston ring all are polyurethane circles, and the polyurethane circle is met the fluid body and do not had any deformation, so further increased the sealability of oil cylinder.So this hydraulic jack long service life is easy to maintenance.
Description of drawings
Fig. 1: the blast structural representation of the utility model hydraulic jack;
Wherein 1 cylinder barrel, 2 front covers, 3 rear end covers, 4 piston rods, 5 pistons, 6 pull bars, 7 through holes, 8 glands, 9 bar portions circle, 10 make up dust rings, 11 piston rings.
Embodiment
For the ease of those skilled in the art's understanding, the utility model hydraulic jack is further specified below in conjunction with accompanying drawing and embodiment:
Shown in accompanying drawing 1; A kind of hydraulic jack comprises cylinder barrel 1 and front and rear cover 2,3 thereof, is provided with piston rod 4 and piston 5 in the cylinder barrel 1; Periphery at cylinder barrel 1 is provided with the pull bar 6 that connects front and rear cover and stator bore; On four jiaos of front and rear cover 2,3, be provided with the through hole corresponding with pull bar 7, described front cover 2 ends also are provided with the gland 8 of convenient for maintaining, also are provided with the through hole corresponding with pull bar 7 on four jiaos of gland 8; The internal surface of described piston rod 4 outer surfaces and cylinder barrel 1 has increased wear-resisting hard chromium.Front end at piston rod 4 is provided with the bar portion circle 9 that seals; Be provided with the combination dust ring 10 that not only seals but also dustproof effect is arranged in the joint of front cover and tailpiece of the piston rod.Described piston 5 two ends are provided with piston ring 11.Described bar portion circle 9, combination dust ring 10 and piston ring 11 all are polyurethane circles.
What front end was established is gland 8 structures, and maintenance easily; The internal surface of piston rod 4 outer surfaces and cylinder barrel 1 has increased wear-resisting hard chromium, has increased the working life of oil cylinder.Bar portion circle 9 is formed double seal with combination dust ring 10, has increased the sealability of oil cylinder.Bar portion circle 9, combination dust ring 10 and piston ring 11 all are polyurethane circles, and the polyurethane circle is met the fluid body and do not had any deformation, so further increased the sealability of oil cylinder.
The above is a preferred embodiment of the utility model, and under the situation that does not break away from the utility model inventive concept, any conspicuous distortion and the replacement carried out all belong within the utility model protection domain.
Claims (4)
1. hydraulic jack; Comprise cylinder barrel (1) and front and rear cover thereof (2,3); Be provided with piston rod (4) and piston (5) in the cylinder barrel (1), be provided with the pull bar (6) that connects front and rear cover and stator bore, on four jiaos of front and rear cover (2,3), be provided with the through hole corresponding (7) with pull bar in the periphery of cylinder barrel (1); It is characterized in that: described front cover (2) end also is provided with the gland (8) of convenient for maintaining, also is provided with the through hole corresponding with pull bar (7) on four jiaos of gland (8); The internal surface of described piston rod (4) outer surface and cylinder barrel (1) has increased wear-resisting hard chromium.
2. hydraulic jack according to claim 1 is characterized in that: the front end at piston rod (4) is provided with the bar portion circle (9) that seals; Be provided with the combination dust ring (10) that not only seals but also dustproof effect is arranged in the joint of front cover and tailpiece of the piston rod.
3. hydraulic jack according to claim 2 is characterized in that: described piston (5) two ends are provided with piston ring (11).
4. hydraulic jack according to claim 3 is characterized in that: described bar portion's circle (9), combination dust ring (10) and piston ring (11) all are polyurethane circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120288381U CN202140371U (en) | 2011-08-02 | 2011-08-02 | Hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120288381U CN202140371U (en) | 2011-08-02 | 2011-08-02 | Hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140371U true CN202140371U (en) | 2012-02-08 |
Family
ID=45551429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120288381U Expired - Fee Related CN202140371U (en) | 2011-08-02 | 2011-08-02 | Hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140371U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261356A (en) * | 2011-08-02 | 2011-11-30 | 肇庆市志成气动有限公司 | Hydraulic oil cylinder |
| CN106555570A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | Wellhead hydraulic lifting device |
| CN112049832A (en) * | 2019-06-05 | 2020-12-08 | 上海煊凝机电制造有限公司 | Novel convenient sealed hydro-cylinder of clearance |
-
2011
- 2011-08-02 CN CN201120288381U patent/CN202140371U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261356A (en) * | 2011-08-02 | 2011-11-30 | 肇庆市志成气动有限公司 | Hydraulic oil cylinder |
| CN106555570A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | Wellhead hydraulic lifting device |
| CN112049832A (en) * | 2019-06-05 | 2020-12-08 | 上海煊凝机电制造有限公司 | Novel convenient sealed hydro-cylinder of clearance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20130802 |