CN206268169U - A kind of oil cylinder for avoiding piston rod accidental movement - Google Patents
A kind of oil cylinder for avoiding piston rod accidental movement Download PDFInfo
- Publication number
- CN206268169U CN206268169U CN201621389287.2U CN201621389287U CN206268169U CN 206268169 U CN206268169 U CN 206268169U CN 201621389287 U CN201621389287 U CN 201621389287U CN 206268169 U CN206268169 U CN 206268169U
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- CN
- China
- Prior art keywords
- piston
- piston rod
- cylinder body
- clamping band
- steel ball
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Abstract
The utility model discloses a kind of oil cylinder for avoiding piston rod accidental movement, including cylinder body, piston, piston rod, fairlead, locking unit, piston, guiding are placed in cylinder body, rodless cavity is formed between piston and cylinder body, piston is provided with multiple movable passageways, multiple movable passageways are distributed on the circumference centered on the center of piston, outer peripheral surface of the first end of movable passageway through piston, second end of movable passageway extends to the center of piston, and the second end of movable passageway connects with rodless cavity；One end of piston rod is connected through fairlead with piston；Cylinder body is provided with hydraulic fluid port, and hydraulic fluid port is connected with rodless cavity；The inner circumferential surface of cylinder body is provided with the holding tank for circularizing arrangement, and holding tank is placed in fairlead near the side of piston；Locking unit includes multiple steel balls, and multiple steel balls correspond with multiple movable passageways set respectively, the width with diameter greater than holding tank of steel ball.The utility model avoids piston rod accidental movement, improves safety in utilization.
Description
Technical field
The utility model is related to oil cylinder technical field, more particularly to a kind of oil cylinder for avoiding piston rod accidental movement.
Background technology
The application of oil cylinder is quite varied, especially in some scenarios, when the stroke of oil cylinder is ended, in order to prevent external force
Act on and cause that piston is moved, it is necessary to which oil cylinder is locked.The lock mode of current oil cylinder has two kinds：The first is
Oil circuit lock, that is, installing valve additional carries out pressurize, in-oil cylinder hydraulic oil is returned in fuel tank, but this protective voltage type from
Potential safety hazard is latched in, situations such as leaking such as occurs, piston rod still slowly can cause locking to fail by return；Second is machinery
Self-locking, conventional mode is to process screw thread in the end of piston rod, and with nut check, this mode can cause piston pole length to increase
Plus, and when external force effect is larger, piston rod can also be moved so as to influence the effect of locked cylinder；Existing oil cylinder self-locking
Mechanism is complicated, using inconvenience, is further improved.
Utility model content
In order to solve technical problem present in background technology, piston rod is avoided surprisingly to move the utility model proposes one kind
Dynamic oil cylinder, effect is good.
A kind of oil cylinder for avoiding piston rod accidental movement, including cylinder body, piston, piston rod, fairlead, locking unit, it is living
Plug, guiding are placed in cylinder body, and rodless cavity is formed between piston and cylinder body, and piston is provided with multiple movable passageways, and multiple is mobile
Passage is distributed on the circumference centered on the center of piston, and the first end of movable passageway is moved through the outer peripheral surface of piston
Second end of dynamic passage extends to the center of piston, and the second end of movable passageway connects with rodless cavity；One end of piston rod passes through
Fairlead is connected with piston；Cylinder body is provided with hydraulic fluid port, and hydraulic fluid port is connected with rodless cavity；The inner circumferential surface of cylinder body is provided with and circularizes cloth
The holding tank put, holding tank is placed in fairlead near the side of piston；Locking unit includes multiple steel balls, multiple steel balls respectively with
Multiple movable passageways are corresponded and set, and the width with diameter greater than holding tank of steel ball, steel ball at least has first position state
With second place state, when steel ball is in first position state, steel ball is completely disposed in movable passageway；When steel ball is in second
During location status, at least part of region is placed in holding tank on steel ball.
Preferably, also including oil inlet pipe, sealing ring, clamping band, one end of oil inlet pipe is connected with hydraulic fluid port, oil inlet pipe it is another
Hold and extend to the direction away from hydraulic fluid port, the outer peripheral surface of oil inlet pipe is provided with external screw thread；Sealing ring is placed in the outside of oil inlet pipe, close
Seal ring is made up of elastomeric material, and first end and the cylinder body of sealing ring are tightly connected, and the other end of sealing ring is to the side away from hydraulic fluid port
To extension；Clamping band is banding, and clamping band is looped around the outside of sealing ring, and shackle member is provided near its first end on clamping band,
On clamping band the fastener being engaged with shackle member is provided near its second end.
Preferably, the first end of clamping band is hinged with sealing ring.
Preferably, shackle member includes multiple mounting blocks, and multiple mounting blocks are installed along the length direction arranged for interval of clamping band
Block is provided with counterbore；Fastener is the pillar being adapted with counterbore.
Preferably, pillar is gradually in tilted layout to its top from its root to the second end away from clamping band.
In the utility model, when oil pressure is relatively low in rodless cavity, in the presence of pressure and gravity, steel ball is placed in mobile logical
In road.When in use, by hydraulic fluid port to hydraulic oil is passed through in rodless cavity, in the presence of oil pressure, direction from piston to fairlead
It is mobile；Hydraulic oil enters in movable passageway, and in the presence of oil pressure, steel ball is displaced outwardly, sometime, the part on steel ball
Region is placed in holding tank, and in the case of the active force of oil pressure and cylinder body, piston keeps stabilization, effectively avoids piston rod accident
It is mobile, it is ensured that the safe handling of oil cylinder.
Brief description of the drawings
Fig. 1 is the structural representation that steel ball of the present utility model is located at first position state；
Fig. 2 is the structural representation that steel ball of the present utility model is located at second place state；
Fig. 3 is the structural representation of clamping band.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutual combination；Below with reference to the accompanying drawings and in conjunction with the embodiments the utility model is elaborated.
Reference picture 1,2,3：
The utility model proposes a kind of oil cylinder for avoiding the accidental movement of piston rod 3, including cylinder body 1, piston 2, piston rod
3rd, fairlead 4, locking unit, piston 2, fairlead 4 are placed in cylinder body 1, rodless cavity are formed between piston and cylinder body 1, on piston
Multiple movable passageways 5 are provided with, multiple movable passageways 5 are distributed on the circumference centered on the center of piston, the of movable passageway 5
The outer peripheral surface of piston is run through in one end, and the second end of movable passageway 5 extends to the center of piston, the second end of movable passageway 5
Connected with rodless cavity；One end of piston rod 3 is connected through fairlead 4 with piston；Cylinder body 1 is provided with hydraulic fluid port 6, hydraulic fluid port 6 with without bar
Chamber connects；The inner circumferential surface of cylinder body 1 is provided with the holding tank 7 for circularizing arrangement, and holding tank 7 is placed in fairlead 4 near piston
Side；Locking unit includes multiple steel balls 8, and multiple steel balls 8 correspond with multiple movable passageways 5 set respectively, steel ball 8 it is straight
More than the width of holding tank 7, steel ball 8 at least has first position state and second place state, when steel ball 8 is in first in footpath
During configuration state, steel ball 8 is completely disposed in movable passageway 5；When steel ball 8 is in second place state, at least part of area on steel ball 8
Domain is placed in holding tank 7, and now cylinder body 1 applies the active force and a driving steel that a driving steel ball 8 is moved inward to steel ball 8
Ball 8 along the axial direction of piston rod 3 active force.
The present embodiment also includes oil inlet pipe 9, sealing ring 10, clamping band 11, and one end of oil inlet pipe 9 is connected with hydraulic fluid port 6, oil-feed
The other end of pipe 9 extends to the direction away from hydraulic fluid port 6, and the outer peripheral surface of oil inlet pipe 9 is provided with external screw thread；Sealing ring 10 be placed in into
The outside of oil pipe 9, sealing ring 10 is made up of elastomeric material, and first end and the cylinder body 1 of sealing ring 10 are tightly connected, sealing ring 10
The other end extends to the direction away from hydraulic fluid port 6；Clamping band 11 is banding, and clamping band 11 is looped around the outside of sealing ring 10, is clamped
Shackle member is provided near its first end on band 11, the engaging being engaged with shackle member is provided near its second end on clamping band 11
Part；When oil-feed, oil extraction is needed, allow oil inlet pipe 9 to be connected with outer tube Q, fixed with outer tube Q using external screw thread；Allow close
Seal ring 10 is wrapped on outer tube Q, is coupled together the two ends of clamping band 11 using shackle member and fastener, allows clamping band 11
Pinch seal ring 10, allows sealing ring 10 to be brought into close contact with outer tube Q, it is to avoid to reveal, it is ensured that oil cylinder is used safely.
In the present embodiment, first end and the sealing ring 10 of clamping band 11 are hinged；Using more convenient.
In the present embodiment, shackle member is included between multiple mounting blocks 12, length direction of the multiple mounting blocks 12 along clamping band 11
Every arrangement, mounting blocks 12 are provided with counterbore；Fastener is the pillar 13 being adapted with counterbore；Allow pillar 13 to be placed in counterbore, allow
The two ends of clamping band 11 couple together.
In the present embodiment, pillar 13 is gradually in tilted layout to its top from its root to the second end away from clamping band 11；
Avoid pillar 13 from being separated with counterbore, improve using effect.
When oil pressure is relatively low in rodless cavity, in the presence of pressure and gravity, steel ball is placed in movable passageway.Using
When, by hydraulic fluid port to hydraulic oil is passed through in rodless cavity, in the presence of oil pressure, piston is moved to the direction of fairlead；Hydraulic oil
Into in movable passageway, in the presence of oil pressure, steel ball is displaced outwardly, and sometime, the subregion on steel ball is placed in appearance
Receive groove, in the case of the active force of oil pressure and cylinder body, piston keeps stabilization, effectively avoids piston rod accidental movement, it is ensured that
The safe handling of oil cylinder.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
Be confined to this, any one skilled in the art in the technical scope that the utility model is disclosed, according to this practicality
New technical scheme and its utility model design are subject to equivalent or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (5)
1. a kind of oil cylinder for avoiding piston rod accidental movement, it is characterised in that including cylinder body, piston, piston rod, fairlead, lock
Tight unit, piston, guiding are placed in cylinder body, and rodless cavity is formed between piston and cylinder body, and piston is provided with multiple movable passageways,
Multiple movable passageways are distributed on the circumference centered on the center of piston, and the first end of movable passageway runs through the outer circumference of piston
Surface, the second end of movable passageway extends to the center of piston, and the second end of movable passageway connects with rodless cavity；The one of piston rod
End is connected through fairlead with piston；Cylinder body is provided with hydraulic fluid port, and hydraulic fluid port is connected with rodless cavity；The inner circumferential surface of cylinder body is provided with into
The holding tank being circular layout, holding tank is placed in fairlead near the side of piston；Locking unit includes multiple steel balls, multiple steel balls
Corresponded with multiple movable passageways respectively and set, the width with diameter greater than holding tank of steel ball, steel ball at least has first
Configuration state and second place state, when steel ball is in first position state, steel ball is completely disposed in movable passageway；At steel ball
When second place state, at least part of region is placed in holding tank on steel ball.
2. the oil cylinder for avoiding piston rod accidental movement according to claim 1, it is characterised in that also including oil inlet pipe, close
Seal ring, clamping band, one end of oil inlet pipe are connected with hydraulic fluid port, and the other end of oil inlet pipe extends to the direction away from hydraulic fluid port, oil inlet pipe
Outer peripheral surface be provided with external screw thread；Sealing ring is placed in the outside of oil inlet pipe, and sealing ring is made up of elastomeric material, and the of sealing ring
One end is tightly connected with cylinder body, and the other end of sealing ring extends to the direction away from hydraulic fluid port；Clamping band is banding, and clamping band surround
In the outside of sealing ring, shackle member is provided near its first end on clamping band, is provided with and clamping near its second end on clamping band
The fastener that part is engaged.
3. the oil cylinder for avoiding piston rod accidental movement according to claim 2, it is characterised in that the first end of clamping band with
Sealing ring is hinged.
4. the oil cylinder for avoiding piston rod accidental movement according to claim 2, it is characterised in that shackle member includes multiple peace
Dress block, multiple mounting blocks along clamping band length direction arranged for interval, mounting blocks are provided with counterbore；Fastener is mutually to be fitted with counterbore
The pillar matched somebody with somebody.
5. the oil cylinder for avoiding piston rod accidental movement according to claim 4, it is characterised in that pillar is from its root to it
Top is gradually in tilted layout to the second end away from clamping band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621389287.2U CN206268169U (en) | 2016-12-16 | 2016-12-16 | A kind of oil cylinder for avoiding piston rod accidental movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621389287.2U CN206268169U (en) | 2016-12-16 | 2016-12-16 | A kind of oil cylinder for avoiding piston rod accidental movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206268169U true CN206268169U (en) | 2017-06-20 |
Family
ID=59046642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621389287.2U Expired - Fee Related CN206268169U (en) | 2016-12-16 | 2016-12-16 | A kind of oil cylinder for avoiding piston rod accidental movement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206268169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278644A (en) * | 2022-01-05 | 2022-04-05 | 三一汽车制造有限公司 | Self-locking oil cylinder and operation machine |
-
2016
- 2016-12-16 CN CN201621389287.2U patent/CN206268169U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278644A (en) * | 2022-01-05 | 2022-04-05 | 三一汽车制造有限公司 | Self-locking oil cylinder and operation machine |
| CN114278644B (en) * | 2022-01-05 | 2023-11-28 | 三一汽车制造有限公司 | Self-locking oil cylinder and working machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20211216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |