CN204153128U - A kind of piston - Google Patents
A kind of piston Download PDFInfo
- Publication number
- CN204153128U CN204153128U CN201420539525.8U CN201420539525U CN204153128U CN 204153128 U CN204153128 U CN 204153128U CN 201420539525 U CN201420539525 U CN 201420539525U CN 204153128 U CN204153128 U CN 204153128U
- Authority
- CN
- China
- Prior art keywords
- piston
- rubber cup
- belt tensioner
- rear end
- taper
- 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
Links
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of piston, the piston rod comprising piston and be connected with piston nose, belt tensioner is provided with at piston rear end, belt tensioner comprises: be provided with the belt tensioner supporting axle with the piston coaxial heart at piston rear end, belt tensioner supporting axle rear end is provided with screw rod, also comprise the piston rubber cup suitable with cylinder bore, piston rubber cup is connected on belt tensioner supporting axle by the shaft hole sleeve on piston rubber cup, piston rubber cup front end and piston rear end connecting part, piston rubber cup rear end is provided with cone shape hole, also comprise the taper withstanding tight block suitable with cone shape hole, taper withstanding tight block is connected on belt tensioner supporting axle by the circle hole sleeve being positioned at its center, screw rod spins for the locknut of jacking taper withstanding tight block.It has the feature of long service life.
Description
Technical field
The utility model relates to a kind of piston, especially a kind of piston for equipment such as air compressor, slurry pump, hydraulic jacks.
Background technique
Piston is the mechanical part that machinery industry is relatively commonly used, as piston type air compressor, reciprocating pump, hydraulic jack etc.Original piston structure is simple, and seal ring easily weares and teares, and the sealing of piston is reduced, causes work efficiency drop, changes seal ring more complicated, frequent.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of piston, and it has the feature of long service life.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of piston, the piston rod comprising piston and be connected with piston nose, belt tensioner is provided with at piston rear end, belt tensioner comprises: be provided with the belt tensioner supporting axle with the piston coaxial heart at piston rear end, belt tensioner supporting axle rear end is provided with screw rod, also comprise the piston rubber cup suitable with cylinder bore, piston rubber cup is connected on belt tensioner supporting axle by the shaft hole sleeve on piston rubber cup, piston rubber cup front end and piston rear end connecting part, piston rubber cup rear end is provided with cone shape hole, also comprise the taper withstanding tight block suitable with cone shape hole, taper withstanding tight block is connected on belt tensioner supporting axle by the circle hole sleeve being positioned at its center, screw rod spins for the locknut of jacking taper withstanding tight block.
The utility model improves further and is:
Be provided with nylon ring between piston and piston rubber cup, nylon ring and cylinder bore suitable, piston rubber cup and nylon ring are structure as a whole.
Piston rubber cup surface is along the circumferential direction provided with the multiple grooves for reducing frictional force between cylinder sleeve and piston.
Taper withstanding tight block is nylon material, and taper withstanding tight block rear end is provided with the nylon piston with its integrative-structure, and nylon piston is provided with piston ring.
Back-up ring is provided with between nylon piston and locknut.
The beneficial effect adopting technique scheme to produce is:
The piston rod comprising piston and be connected with piston nose, belt tensioner is provided with at piston rear end, belt tensioner comprises: be provided with the belt tensioner supporting axle with the piston coaxial heart at piston rear end, belt tensioner supporting axle rear end is provided with screw rod, also comprise the piston rubber cup suitable with cylinder bore, piston rubber cup is connected on belt tensioner supporting axle by the shaft hole sleeve on piston rubber cup, piston rubber cup front end and piston rear end connecting part, piston rubber cup rear end is provided with cone shape hole, also comprise the taper withstanding tight block suitable with cone shape hole, taper withstanding tight block is connected on belt tensioner supporting axle by the circle hole sleeve being positioned at its center, screw rod spins for the locknut of jacking taper withstanding tight block.When piston uses one section of cycle rubber cup wearing and tearing, by adjustment locknut, make the conical surface of taper withstanding tight block that the lip of piston cup is continued spreading, rubber cup is combined closely with cylinder sleeve again, and then extends the working life of piston.
The utility model
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In the accompanying drawings: 1, piston; 2, piston rod; 3, belt tensioner supporting axle; 4, screw rod; 5, piston rubber cup; 6, taper withstanding tight block; 7, locknut; 8, nylon ring; 9, groove; 10, nylon piston; 11, piston ring; 12, back-up ring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
Embodiment is as shown in Figure 1 known, the piston rod 2 that the present embodiment comprises piston 1 and is connected with piston 1 front end, belt tensioner is provided with in piston 1 rear end, belt tensioner comprises: be provided with the belt tensioner supporting axle 3 with piston 1 concentric in piston 1 rear end, belt tensioner supporting axle 3 rear end is provided with screw rod 4, also comprise the piston rubber cup 5 suitable with cylinder bore, piston rubber cup 5 is connected on belt tensioner supporting axle 3 by the shaft hole sleeve on piston rubber cup 5, piston rubber cup 5 surface is along the circumferential direction provided with the groove 9 of multiple wide 2 millimeters deep 1.5 millimeters for reducing frictional force between cylinder sleeve and piston 1, nylon ring 8 is provided with between piston 1 and piston rubber cup 5, nylon ring 8 is suitable with cylinder bore, piston rubber cup 5 and nylon ring 8 are structure as a whole, piston rubber cup 5 rear end is provided with cone shape hole, also comprise the taper withstanding tight block 6 suitable with cone shape hole, taper withstanding tight block 6 is nylon material, taper withstanding tight block 6 rear end is provided with the nylon piston 10 with its integrative-structure, nylon piston 10 is provided with piston ring 11, taper withstanding tight block 6 and nylon piston 10 are connected on belt tensioner supporting axle 3 by the circle hole sleeve being positioned at its center, screw rod 4 spin for the locknut 7 of jacking taper withstanding tight block 6, back-up ring 12 is provided with between nylon piston 11 and locknut 7.
Claims (4)
1. a piston, the piston rod (2) comprising piston (1) and be connected with piston (1) front end, it is characterized in that: be provided with belt tensioner in described piston (1) rear end, described belt tensioner comprises: be provided with the belt tensioner supporting axle (3) with piston (1) concentric in described piston (1) rear end, described belt tensioner supporting axle (3) rear end is provided with screw rod (4), also comprise the piston rubber cup (5) suitable with cylinder bore, described piston rubber cup (5) is connected on belt tensioner supporting axle (3) by the shaft hole sleeve on piston rubber cup (5), described piston rubber cup (5) front end and described piston (1) connecting part, rear end, described piston rubber cup (5) rear end is provided with cone shape hole, also comprise the taper withstanding tight block (6) suitable with cone shape hole, described taper withstanding tight block (6) is connected on belt tensioner supporting axle (3) by the circle hole sleeve being positioned at its center, described screw rod (4) spin for the locknut (7) of jacking taper withstanding tight block (6), nylon ring (8) is provided with between described piston (1) and piston rubber cup (5), described nylon ring (8) is suitable with cylinder bore, and described piston rubber cup (5) and nylon ring (8) are structure as a whole.
2. a kind of piston according to claim 1, is characterized in that: described piston rubber cup (5) surface is along the circumferential direction provided with the multiple grooves (9) for reducing frictional force between cylinder sleeve and piston (1).
3. a kind of piston according to claim 2, it is characterized in that: described taper withstanding tight block (6) is nylon material, described taper withstanding tight block rear end is provided with the nylon piston (10) with its integrative-structure, and described nylon piston (10) is provided with piston ring (11).
4. a kind of piston according to claim 3, is characterized in that: be provided with back-up ring (12) between described nylon piston (11) and locknut (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539525.8U CN204153128U (en) | 2014-09-17 | 2014-09-17 | A kind of piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539525.8U CN204153128U (en) | 2014-09-17 | 2014-09-17 | A kind of piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153128U true CN204153128U (en) | 2015-02-11 |
Family
ID=52511245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420539525.8U Expired - Fee Related CN204153128U (en) | 2014-09-17 | 2014-09-17 | A kind of piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204153128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198308A (en) * | 2021-12-06 | 2022-03-18 | 中国船舶重工集团公司第七0四研究所 | Marine adjustable-speed screw compressor function adjusting structure |
-
2014
- 2014-09-17 CN CN201420539525.8U patent/CN204153128U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198308A (en) * | 2021-12-06 | 2022-03-18 | 中国船舶重工集团公司第七0四研究所 | Marine adjustable-speed screw compressor function adjusting structure |
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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: 20150211 Termination date: 20170917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |