CN206571764U - Anti-leak piston bar - Google Patents
Anti-leak piston bar Download PDFInfo
- Publication number
- CN206571764U CN206571764U CN201720089933.1U CN201720089933U CN206571764U CN 206571764 U CN206571764 U CN 206571764U CN 201720089933 U CN201720089933 U CN 201720089933U CN 206571764 U CN206571764 U CN 206571764U
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- China
- Prior art keywords
- rod
- piston
- sealing
- head
- leak
- 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.)
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Abstract
The utility model discloses a kind of anti-leak piston bar, including the hollow piston body of rod, piston body of rod head end is threaded with piston rod head, the threaded connection of piston rod head is in piston rod head axially inner side provided with head sealing, side is provided with body of rod sealing corresponding with head sealing in piston rod body, and head sealing or body of rod sealing are provided with sealing device；Oil guard is provided with inside the tail end of the piston body of rod；The utility model greatly reduces the probability of piston rod oil leak by dual-seal.
Description
Technical field
The utility model is related to a kind of piston rod, more particularly to a kind of anti-leak piston bar.
Background technology
Hydraulic jack is wide variety of Hydraulic Elements now, and piston rod is the important part of cylinder structure, generally
Piston rod loads cylinder block with piston composition fixed structure, and oil cylinder will possess the effect of preferably transmission hydraulic coupling, and sealing is
A critically important ring, so the sealing of piston rod and piston is just particularly important.And for opposing pistons, the sealing of piston rod
Relatively easily ignored by most producers, when special piston rod is tubular structure, seal the only weldering of an oil baffle close to the inner portion
Connect, if defect occurs in welding, be easy for causing leakage, influence sealing effectiveness.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of anti-leak piston bar for possessing dual-seal protection.
In order to solve the above technical problems, the technical solution of the utility model is：Anti-leak piston bar, including hollow piston
The body of rod, the piston body of rod head end screw thread is provided with piston rod head, and the threaded connection of the piston rod head is in the piston rod
Head axially inner side is provided with side in head sealing, the piston rod body and sealed provided with the body of rod corresponding with the head sealing
Portion, the head sealing or the body of rod sealing are provided with sealing device；Provided with gear oil inside the tail end of the piston body of rod
Device.
As preferred technical scheme, the oil guard includes being welded on the gear oil inside the piston body of rod tail end
Plate.
As preferred technical scheme, the sealing device includes being arranged on the head sealing or body of rod sealing
Sealing ring is installed in groove in portion, the groove.
By adopting the above-described technical solution, anti-leak piston bar, including the hollow piston body of rod, the piston body of rod head
End screw thread is provided with piston rod head, and it is close provided with head that the threaded connection of the piston rod head is in the piston rod head axially inner side
Side is provided with body of rod sealing corresponding with the head sealing, the head sealing or institute in envelope portion, the piston rod body
Body of rod sealing is stated provided with sealing device；Oil guard is provided with inside the tail end of the piston body of rod；The utility model passes through double
Resealing, greatly reduces the probability of piston rod oil leak.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is structure enlarged diagram at Fig. 1 I；
Fig. 3 is former piston rod construction schematic diagram；
In figure：The 1- piston bodies of rod；2- piston rod heads；21- screw threads；3- head sealings；4- body of rod sealings；5- sealing dresses
Put；51- grooves；52- sealing rings；53- back-up rings；6- oil guards；61- oil baffles.
Embodiment
It is described in detail with reference to the accompanying drawings according to exemplary embodiment of the present utility model.Here it is to be noted that it
In accompanying drawing, structure and function substantially the same composition part are assigned by identical reference, and in order that specification more
Plus it is concise, eliminate the redundancy description on essentially the same composition part.
As depicted in figs. 1 and 2, anti-leak piston bar, including the hollow piston body of rod 1, the head end screw thread of the piston body of rod 1
21 are connected with piston rod head 2.
Oil guard 6 is provided with inside the tail end of the piston body of rod 1, the oil guard 6 includes being welded on the piston
First layer protective action, the gear oil are played in oil baffle 61 inside the tail end of the body of rod 1, sealing of the oil baffle 61 to piston rod
The position of plate 61 is preferably welded on the part of installation piston inwards, piston is sealed after installing by shadow to prevent from welding caused deformation
Ring.
The junction of screw thread 21 of the piston rod head 2 is provided with head sealing 31, institute in the axially inner side of piston rod head 2
State the inner side of the piston body of rod 1 and be provided with body of rod sealing 4 corresponding with the head sealing 31, the body of rod sealing 4 is provided with close
Seal apparatus 5, the sealing device 5 includes the groove 51 being arranged on the body of rod sealing 4, naturally it is also possible in the head
Sealing 31 sets in groove 51, the groove 51 and is provided with sealing ring 52, can also increase back-up ring 53, and sealing herein plays second
Layer protective action.
The schematical embodiment of the utility model is the foregoing is only, model of the present utility model is not limited to
Enclose.Any those skilled in the art, the made equivalent change on the premise of design of the present utility model and principle is not departed from
Change and change, the scope of the utility model protection all should be belonged to.
Claims (3)
1. anti-leak piston bar, including the hollow piston body of rod, the piston body of rod head end are threaded with piston rod head, it is special
Levy and be：The threaded connection of the piston rod head is in the piston rod head axially inner side provided with head sealing, the piston
Body of rod sealing corresponding with the head sealing is provided with the inside of the body of rod, the head sealing or the body of rod sealing are set
There is sealing device；Oil guard is provided with inside the tail end of the piston body of rod.
2. anti-leak piston bar as claimed in claim 1, it is characterised in that：The oil guard includes being welded on the piston
Oil baffle inside body of rod tail end.
3. anti-leak piston bar as claimed in claim 1, it is characterised in that：The sealing device includes being arranged on the head
Sealing ring is installed in groove on sealing or the body of rod sealing, the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720089933.1U CN206571764U (en) | 2017-01-23 | 2017-01-23 | Anti-leak piston bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720089933.1U CN206571764U (en) | 2017-01-23 | 2017-01-23 | Anti-leak piston bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206571764U true CN206571764U (en) | 2017-10-20 |
Family
ID=60061188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720089933.1U Active CN206571764U (en) | 2017-01-23 | 2017-01-23 | Anti-leak piston bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206571764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443533A (en) * | 2020-12-10 | 2021-03-05 | 徐州徐工液压件有限公司 | Integrally forged hollow piston rod with earrings |
-
2017
- 2017-01-23 CN CN201720089933.1U patent/CN206571764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443533A (en) * | 2020-12-10 | 2021-03-05 | 徐州徐工液压件有限公司 | Integrally forged hollow piston rod with earrings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |