CN208294869U - A kind of sealing structure of adjustable position hydraulic cylinder - Google Patents
A kind of sealing structure of adjustable position hydraulic cylinder Download PDFInfo
- Publication number
- CN208294869U CN208294869U CN201721757003.5U CN201721757003U CN208294869U CN 208294869 U CN208294869 U CN 208294869U CN 201721757003 U CN201721757003 U CN 201721757003U CN 208294869 U CN208294869 U CN 208294869U
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- China
- Prior art keywords
- adjusting screw
- cylinder
- seal
- ring
- cylinder barrel
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Abstract
The utility model relates to a kind of sealing structures of adjustable position hydraulic cylinder.Piston loads onto two O-ring seals I, and it is fixed on the piston rod by washer and nut I, piston rod is fitted into cylinder barrel, an O-ring seal III is respectively charged into each groove of adjusting screw, one end of adjusting screw is screwed onto cylinder head bore, nut II is screwed on the adjusting screw one end for stretching out cylinder cap, cylinder barrel loads onto retaining ring and fixed disk, and cylinder cap is fixed on cylinder barrel by washer with several screws, O-ring seal II, the other end and plunger rod contacts of adjusting screw are equipped between cylinder cap and cylinder barrel.Original adjusting screw end face seal is designed, it is changed to axial seal structure, when adjusting screw carries out position adjustment, due to thering is O-ring seal to be sealed on axial direction, hydraulic oil in hydraulic cylinder does not leak out completely, in this way in the case where not increasing cost, the effect of hydraulic oil seal is fully meet, obtains user's favorable comment.
Description
Technical field
The utility model relates to a kind of sealing structure of hydraulic cylinder, in particular to a kind of sealing of adjustable position hydraulic cylinder
Structure.
Background technique
Adjustable position hydraulic cylinder sealing structure is one of the primary structure in hydraulic actuating mechanism, relates generally to tieing up
Hydraulic actuating mechanism is protected, when carrying out position adjusting, prevents the hydraulic fluid leak in hydraulic cylinder.The sealing structure of the prior art such as 3
Shown in figure, when adjusting screw needs adjusting position, sealing nut and sealing ring are taken away, the hydraulic oil in hydraulic cylinder will pass through
Gap leakage between screw and hydraulic cylinder comes out, and causes device context especially dirty, thus causes user very discontented.
Summary of the invention
In view of original technology, the utility model provides a kind of sealing of adjustable position hydraulic cylinder
Structure, the Seal Design of original adjusting screw end face, is changed to axial seal knot to guarantee hydraulic oil No leakage requirement
Structure, it is hydraulic in hydraulic cylinder due to thering is O-ring seal to be sealed on axial direction when adjusting screw needs adjusting position
Oil does not leak out completely, the improvement of structure so, obtains the height praise of user.
To achieve the above object, used technical solution is the utility model: a kind of adjustable position hydraulic cylinder it is close
Seal structure, including cylinder barrel, piston rod, O-ring seal I, piston, washer I, nut I, washer II, screw, cylinder cap, adjusting screw,
Nut II, O-ring seal II, retaining ring, fixed disk, it is characterised in that: further include O-ring seal III, in the adjusting screw
Two circle grooves are equipped at intervals on periphery；
The piston loads onto two O-ring seals I, and fixed on the piston rod by washer and nut I, the piston rod
It is fitted into cylinder barrel, an O-ring seal III is respectively charged into each groove of the adjusting screw, one end of adjusting screw is spirally connected
In cylinder head bore, nut II is screwed on the adjusting screw one end for stretching out cylinder cap, and the cylinder barrel loads onto retaining ring and fixed disk, is used in combination
Cylinder cap is fixed on cylinder barrel by several screws by washer, and O-ring seal II is equipped between cylinder cap and cylinder barrel, adjusting screw
The other end and plunger rod contacts.
The utility model, which is technically characterized by comprising the steps as follows:, designs original adjusting screw end face seal, is changed to axial seal structure,
When adjusting screw carries out position adjustment, due to having O-ring seal to be sealed on axial direction, the hydraulic oil in hydraulic cylinder is complete
It does not leak out, in this way in the case where not increasing cost, fullys meet the effect of hydraulic oil seal, it is good to obtain user
It comments.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view of Fig. 1；
Fig. 3 is prior art sealed structural schematic diagram.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of sealing structure of adjustable position hydraulic cylinder, including it is cylinder barrel 1, piston rod 2, O-shaped close
Seal I 3, piston 4, washer I 5, nut I 6, washer II 7, screw 8, cylinder cap 9, adjusting screw 11, nut II 12, O-ring seal
II 13, retaining ring 14, fixed disk 15 further include O-ring seal III 10.
Two circle groove 11-1 are equipped at intervals on the periphery of adjusting screw 11.
An O-ring seal I 3 is loaded onto respectively in two grooves of piston 4, and is fixed on work with washer 5 and nut I 6
On stopper rod 2, then by they integrally be fitted into cylinder barrel 1, be respectively charged into each groove 11-1 of adjusting screw 11 one it is O-shaped
Sealing ring III 10, by one end of adjusting screw 11 from being screwed onto 1 hole of cylinder cap on the inside of cylinder cap 9, nut II 12 is screwed onto stretching cylinder
On 11 one end of adjusting screw of lid 9, by upper retaining ring 14 and fixed disk 15 on cylinder barrel 1, and pass through washer 7 with several screws 8
Cylinder cap 9 is fixed on cylinder barrel 1,
O-ring seal II 13 is equipped between cylinder cap 9 and cylinder barrel 1, the other end of adjusting screw 11 is contacted with piston rod 2.
Claims (1)
1. a kind of sealing structure of adjustable position hydraulic cylinder, including cylinder barrel (1), piston rod (2), O-ring seal I (3), piston
(4), washer I (5), nut I (6), washer II (7), screw (8), cylinder cap (9), adjusting screw (11), nut II (12), O-shaped close
Seal II (13), retaining ring (14), fixed disk (15), it is characterised in that: further include O-ring seal III (10), in the adjustment spiral shell
It follows closely and is equipped at intervals with two circle grooves (11-1) on the periphery of (11)；
The piston (4) loads onto two O-ring seals I (3), and is fixed on piston rod (2) by washer I (5) and nut I (6)
On, the piston rod (2) is fitted into cylinder barrel (1), is respectively charged into an O in each groove (11-1) of the adjusting screw (11)
Type sealing ring III (10), one end of adjusting screw (11) are screwed onto cylinder cap (9) hole, and nut II (12) is screwed onto stretching cylinder cap
(9) on adjusting screw (11) one end, the cylinder barrel (1) loads onto retaining ring (14) and fixed disk (15), and logical with several screws (8)
It crosses washer II (7) cylinder cap (9) is fixed on cylinder barrel (1), O-ring seal II is equipped between cylinder cap (9) and cylinder barrel (1)
(13), the other end of adjusting screw (11) is contacted with piston rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721757003.5U CN208294869U (en) | 2017-12-15 | 2017-12-15 | A kind of sealing structure of adjustable position hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721757003.5U CN208294869U (en) | 2017-12-15 | 2017-12-15 | A kind of sealing structure of adjustable position hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208294869U true CN208294869U (en) | 2018-12-28 |
Family
ID=64697815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721757003.5U Active CN208294869U (en) | 2017-12-15 | 2017-12-15 | A kind of sealing structure of adjustable position hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208294869U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799139A (en) * | 2019-02-22 | 2019-05-24 | 北京航空航天大学 | A kind of super-pressure tester device for nano-fluid test |
-
2017
- 2017-12-15 CN CN201721757003.5U patent/CN208294869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799139A (en) * | 2019-02-22 | 2019-05-24 | 北京航空航天大学 | A kind of super-pressure tester device for nano-fluid test |
| CN109799139B (en) * | 2019-02-22 | 2024-03-15 | 北京航空航天大学 | Ultrahigh pressure test instrument for nanofluid test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200608 Address after: 300384 in Tianjin Binhai Huayuan Industrial Zone (outer ring) Haitai development two Road No. 1 Patentee after: ZHONGHUAN TIG Co.,Ltd. Address before: 300385 Block A, No. 18 East Haitai Road, Huayuan Industrial Park, Binhai New Area, Tianjin Patentee before: TIANJIN JINGTONG CONTROL INSTRUMENT TECHNOLOGY Co.,Ltd. |