CN205933049U - Jack slot limit structure - Google Patents
Jack slot limit structure Download PDFInfo
- Publication number
- CN205933049U CN205933049U CN201620892999.XU CN201620892999U CN205933049U CN 205933049 U CN205933049 U CN 205933049U CN 201620892999 U CN201620892999 U CN 201620892999U CN 205933049 U CN205933049 U CN 205933049U
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- China
- Prior art keywords
- oil cylinder
- piston
- straight trough
- limiting structure
- position limiting
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Abstract
The utility model discloses a jack slot limit structure, the on -line screen storage device comprises a base, be equipped with the hydro -cylinder on the base, the hydro -cylinder outside is equipped with the overcoat, the piston rod that is equipped with the piston in the hydro -cylinder and is connected with the piston, the cover is equipped with the sealing washer on the piston, be equipped with axially extended straight flute on the hydro -cylinder inner wall, be equipped with the cavity between overcoat and the hydro -cylinder, be equipped with the connecting hole between straight flute and the cavity. This limit structure reasonable in design through the cooperation of straight flute with the connecting hole, has good spacing effect, and long service life is with low costs.
Description
Technical field
The utility model is related to a kind of jack structure, specifically refers to a kind of jack groove position limiting structure.
Background technology
At present, traditional jack limit valve relies on to be got through hole and carries out spacing, this limit method on cylinder wall,
Difficulty of processing is big, and the requirement for accessories such as sealing rings is also high, and service life is shorter, high cost.
Content of the invention
The purpose of this utility model is to provide for a kind of jack groove position limiting structure, and this position limiting structure is reasonable in design,
Good limit effect, long service life, low cost.
In order to achieve the above object, the utility model provides following technical scheme：A kind of jack groove position limiting structure,
Including base, described base is provided with oil cylinder, is provided with overcoat outside described oil cylinder, be provided with described oil cylinder piston and with piston phase
The piston rod connecting, described piston is arranged with sealing ring, described oil cylinder inner wall is provided with axially extended straight trough, described overcoat
It is provided with cavity and oil cylinder between, between described straight trough and cavity, be provided with connecting hole.
It is further preferred that described straight trough is located at the upper end of oil cylinder.
It is further preferred that being respectively equipped with, on described base, the fuel feed hole being connected with cylinder cavity, and it is connected with cavity
Oil outlet.
It is further preferred that the quantity of described straight trough and connecting hole is three.
It is further preferred that described straight trough can be pass-out head.
It is further preferred that described straight trough can obstructed be lifted one's head.
The beneficial effects of the utility model：This position limiting structure is reasonable in design, by the cooperation of straight trough and connecting hole, has good
Good limit effect, long service life, low cost.
Brief description
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is the schematic cross-section of oil cylinder described in the utility model.
Accompanying drawing 3 is part B partial enlarged drawing.
Accompanying drawing 4 is the obstructed part A partial enlarged drawing lifted one's head of straight trough.
Accompanying drawing 5 is the part A partial enlarged drawing of straight trough pass-out head.
Marginal data：1st, base；2nd, oil cylinder；3rd, sealing ring；4th, straight trough；5th, cavity；6th, connecting hole；21st, overcoat；22nd, live
Plug；23rd, piston rod.
Specific embodiment
We combine accompanying drawing and a kind of jack groove position limiting structure described in the utility model are done further below
Bright.
As shown in Fig. 1 to Fig. 5, a kind of jack groove position limiting structure of the present embodiment, including base 1, described base 1
It is provided with oil cylinder 2, outside described oil cylinder 2, is provided with overcoat 21, in described oil cylinder 2, be provided with piston 22 and the work being connected with piston 22
Stopper rod 23, described piston 22 is arranged with sealing ring 3, and described oil cylinder 2 inwall is provided with axially extended straight trough 4, described overcoat
It is provided with cavity 5 between 21 and oil cylinder 2, between described straight trough 4 and cavity 5, be provided with connecting hole 6.Described straight trough 4 is located at the upper of oil cylinder 2
End.The fuel feed hole being connected with oil cylinder 2 inner chamber is respectively equipped with described base 1, and the oil outlet being connected with cavity 5.Described straight
The quantity of groove 4 and connecting hole 6 is three.Described straight trough 4 can be pass-out head.Described straight trough 4 can obstructed be lifted one's head.
The operation principle of this position limiting structure is substantially as follows：By fuel feed hole toward cylinder cavity oil-feed, piston 22 and piston rod 23 are in oil pressure
Effect is lower constantly to be risen, and after sealing ring 3 reaches straight trough 4, oil flows into cavity 5 by straight trough 4 and connecting hole 6, thus playing limit
Position effect.
Protection domain of the present utility model is not limited to above example and its conversion.
Claims (6)
1. a kind of jack groove position limiting structure it is characterised in that：Including base（1）, described base（1）It is provided with oil cylinder（2）,
Described oil cylinder（2）Outside is provided with overcoat（21）, described oil cylinder（2）Inside it is provided with piston（22）And with piston（22）The piston being connected
Bar（23）, described piston（22）On be arranged with sealing ring（3）, described oil cylinder（2）Inwall is provided with axially extended straight trough（4）,
Described overcoat（21）With oil cylinder（2）Between be provided with cavity（5）, described straight trough（4）With cavity（5）Between be provided with connecting hole（6）.
2. a kind of jack groove position limiting structure according to claim 1 it is characterised in that：Described straight trough（4）It is located at oil
Cylinder（2）Upper end.
3. a kind of jack groove position limiting structure according to claim 1 it is characterised in that：Described base（1）Upper difference
It is provided with and oil cylinder（2）The fuel feed hole that inner chamber connects, and and cavity（5）The oil outlet connecting.
4. a kind of jack groove position limiting structure according to claim 1 it is characterised in that：Described straight trough（4）And connection
Hole（6）Quantity be three.
5. a kind of jack groove position limiting structure according to claim 1 it is characterised in that：Described straight trough（4）Can be
Pass-out head.
6. a kind of jack groove position limiting structure according to claim 1 it is characterised in that：Described straight trough（4）Can be
Obstructed lift one's head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620892999.XU CN205933049U (en) | 2016-08-17 | 2016-08-17 | Jack slot limit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620892999.XU CN205933049U (en) | 2016-08-17 | 2016-08-17 | Jack slot limit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205933049U true CN205933049U (en) | 2017-02-08 |
Family
ID=57919053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620892999.XU Active CN205933049U (en) | 2016-08-17 | 2016-08-17 | Jack slot limit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205933049U (en) |
-
2016
- 2016-08-17 CN CN201620892999.XU patent/CN205933049U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |