CN203223437U - Hydraulic pushing rod with corrugated pipe - Google Patents
Hydraulic pushing rod with corrugated pipe Download PDFInfo
- Publication number
- CN203223437U CN203223437U CN 201320204886 CN201320204886U CN203223437U CN 203223437 U CN203223437 U CN 203223437U CN 201320204886 CN201320204886 CN 201320204886 CN 201320204886 U CN201320204886 U CN 201320204886U CN 203223437 U CN203223437 U CN 203223437U
- Authority
- CN
- China
- Prior art keywords
- push rod
- shell
- pushing rod
- outer shell
- corrugated pipe
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a hydraulic pushing rod with a corrugated pipe. The hydraulic pushing rod comprises an outer shell. A groove is formed in the outer shell and an annular groove is formed in an inner wall, adjacent to a notch, of the outer shell. A cylinder sleeve is arranged in the groove. A steel ball is arranged on an axis portion of the bottom of the cylinder sleeve. A single-direction valve spring seat is arranged above the steel ball. A single-direction valve spring is arranged between the single-direction valve spring seat and the steel ball. A pushing rod is arranged in the cylinder sleeve in a sliding mode. A shaft steel wire retaining ring is arranged at the bottom of the pushing rod. Pushing rod springs are sleeved on the pushing rod and the cylinder sleeve. Spring seats are sleeved on upper half portions of the pushing rod springs. The outer diameters of spring seats are matched with the size of the notch of the outer shell. An oil seal is arranged in a space formed by the spring seats and the annular groove of the outer shell. A shaft sleeve is arranged between the upper portion of the oil seal and the outer shell. The hydraulic pushing rod further comprises a rubber corrugated pipe. One end of the rubber corrugated pipe is connected between the pushing rod and the outer shell in a clamped mode. The other end of the rubber corrugated pipe is sleeved on the outer shell. Gaskets are arranged on contact portions of the bottoms of the pushing rod springs and the outer shell.
Description
Technical field
The utility model relates to a kind of hydraulic unit that is installed on the expansion tightening wheel, relates in particular to a kind of hydraulic push rod with bellows.
Background technique
Hydraulic push rod is mounted in the hydraulic unit on the Idle wheel, assists Idle wheel to regulate the driving belt tightness automatically, guarantees the normal smooth running of motor car engine.Hydraulic push rod of the prior art utilizes the plastics dust-proof cover to prevent from entering dust in the hydraulic push rod usually, but in the practice, the dustproof effect of plastics dust-proof cover is still waiting to improve.
The model utility content
Problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of hydraulic push rod of band bellows of dustproof better effects if is provided.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
The hydraulic push rod of band bellows, it comprises shell, offer groove and shell in the described shell and offer circular groove near on the inwall at notch place, be provided with cylinder sleeve in the described groove, described cylinder sleeve bottom axis part is provided with steel ball, the steel ball top is provided with the check valve spring seat, is provided with check valve spring between described check valve spring seat and the steel ball; Slide in the described cylinder sleeve and be provided with push rod, the push rod bottom is provided with axle-steel silk back-up ring, described push rod and cylinder sleeve all are arranged with push rod spring outward, the described push rod spring first half is arranged with spring seat outward, the outside dimension of described spring seat matches with shell notch size, be provided with oil sealing in described spring seat and the formed space of shell circular groove, be provided with axle sleeve between described oil sealing top and the shell, this hydraulic push rod also comprises a rubber corrugated pipe, described rubber corrugated pipe one end is connected between push rod and the shell, and the rubber corrugated pipe the other end is sheathed on the shell.
As preferably, described push rod spring bottom is provided with pad with the housing contacts position.
Adopt the technical solution of the utility model, because rubber corrugated pipe has certain elasticity, can cooperate the slip of push rod better, prevent that more effectively dust from entering in the hydraulic push rod.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
See also Fig. 1, the hydraulic push rod of band bellows, it comprises shell 1, offer in the described shell 1 on groove and the shell 1 close inwall at notch place and offer circular groove, be provided with cylinder sleeve 11 in the described groove, described cylinder sleeve 11 bottom axis parts are provided with steel ball 8, and steel ball 8 tops are provided with check valve spring seat 6, are provided with check valve spring 7 between described check valve spring seat 6 and the steel ball 8; Slide in the described cylinder sleeve 11 and be provided with push rod 4, push rod 4 bottoms are provided with axle-steel silk back-up ring 3, described push rod 4 and the cylinder sleeve 11 outer push rod springs 2 that all are arranged with, described push rod spring 2 first halves are arranged with spring seat 5 outward, the outside dimension of described spring seat 5 matches with shell 1 notch size, be provided with oil sealing 9 in described spring seat 5 and the formed space of shell 1 circular groove, be provided with axle sleeve 13 between described oil sealing 9 tops and the shell 1, this hydraulic push rod also comprises a rubber corrugated pipe 12, described rubber corrugated pipe 12 1 ends are connected between push rod 4 and the shell 1, rubber corrugated pipe 12 the other ends are sheathed on the shell 1, and described push rod spring 2 bottoms and shell 1 contact position are provided with pad 10.
Because push rod 4 slides in cylinder sleeve 11, the space on the hydraulic push rod constantly changes with the slip of push rod 4, and rubber corrugated pipe 12 has certain elasticity, can cooperate the slip of push rod 4 better, thereby more effectively dustproof.
Claims (2)
1. be with the hydraulic push rod of bellows, it comprises shell (1), offer groove and shell (1) in the described shell (1) and offer circular groove near on the inwall at notch place, be provided with cylinder sleeve (11) in the described groove, described cylinder sleeve (11) bottom axis part is provided with steel ball (8), steel ball (8) top is provided with check valve spring seat (6), is provided with check valve spring (7) between described check valve spring seat (6) and the steel ball (8); Slide in the described cylinder sleeve (11) and be provided with push rod (4), push rod (4) bottom is provided with axle-steel silk back-up ring (3), described push rod (4) and the outer push rod spring (2) that all is arranged with of cylinder sleeve (11), described push rod spring (2) first half is arranged with spring seat (5) outward, the outside dimension of described spring seat (5) matches with shell (1) notch size, be provided with oil sealing (9) in described spring seat (5) and the formed space of shell (1) circular groove, be provided with axle sleeve (13) between described oil sealing (9) top and the shell (1), it is characterized in that: this hydraulic push rod also comprises a rubber corrugated pipe (12), described rubber corrugated pipe (12) one ends are connected between push rod (4) and the shell (1), and rubber corrugated pipe (12) the other end is sheathed on the shell (1).
2. the hydraulic push rod of band bellows according to claim 1 is characterized in that: be provided with pad (10) with shell (1) contact position bottom the described push rod spring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204886 CN203223437U (en) | 2013-04-22 | 2013-04-22 | Hydraulic pushing rod with corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204886 CN203223437U (en) | 2013-04-22 | 2013-04-22 | Hydraulic pushing rod with corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223437U true CN203223437U (en) | 2013-10-02 |
Family
ID=49250441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320204886 Expired - Fee Related CN203223437U (en) | 2013-04-22 | 2013-04-22 | Hydraulic pushing rod with corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858285A (en) * | 2018-09-01 | 2018-11-23 | 张家港致盈电子技术有限公司 | A kind of protective device that automatic mechanical hand is easy to disassemble |
-
2013
- 2013-04-22 CN CN 201320204886 patent/CN203223437U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858285A (en) * | 2018-09-01 | 2018-11-23 | 张家港致盈电子技术有限公司 | A kind of protective device that automatic mechanical hand is easy to disassemble |
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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: 20131002 Termination date: 20150422 |
|
| EXPY | Termination of patent right or utility model |