CN217582681U - Novel pressure relief structure hydro-cylinder - Google Patents
Novel pressure relief structure hydro-cylinder Download PDFInfo
- Publication number
- CN217582681U CN217582681U CN202221256661.7U CN202221256661U CN217582681U CN 217582681 U CN217582681 U CN 217582681U CN 202221256661 U CN202221256661 U CN 202221256661U CN 217582681 U CN217582681 U CN 217582681U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- cylinder body
- piston
- oil
- wall
- 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.)
- Active
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a novel pressure release structure hydro-cylinder, the hydraulic cylinder comprises a cylinder body, the cylinder bottom, piston and piston rod, the cylinder body keep away from being equipped with the uide bushing of cooperation piston rod on the cylinder bottom, the piston becomes rod chamber and rodless chamber with the internal partitioning of cylinder body, the rodless chamber end of cylinder body is equipped with first hydraulic fluid port and is used for the first oilhole of crossing in first hydraulic fluid port of intercommunication and rodless chamber, the rod chamber end that has of cylinder body is equipped with the second hydraulic fluid port, the second in intercommunication second hydraulic fluid port and rodless chamber crosses the oilhole and communicates the second hydraulic fluid port and has the at least one third in rod chamber to cross the oilhole, second hydraulic fluid port and second cross the steel ball groove that is equipped with steel ball and cooperation steel ball between the oilhole. The utility model discloses cross the pressure release structure of oilhole and steel ball combination by the second in the design of second oilhole department, can in time carry out the pressure release to the inside oil pressure of cylinder body when the piston rod stretches out, system pressure when reducing piston and uide bushing contact, the life of extension hydro-cylinder can also reduce the starting pressure when the piston rod withdraws for its starting reaction is fast, reduces the withdrawal time.
Description
Technical Field
The utility model relates to a novel hydro-cylinder structure especially relates to a novel pressure release structure hydro-cylinder.
Background
The conventional oil cylinder structure has the advantages that in the extending process of the piston rod, when the internal pressure of the cylinder body is too large, the piston and the cylinder cover can generate large pressure when contacting, the piston or the cylinder cover is damaged, the service life of the oil cylinder is influenced, and the pressure cannot be released in time, so that the starting pressure is large when the piston rod retracts, and the starting reaction is slow.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the defect that exists among the above-mentioned prior art and not enough, improved one kind and crossed the pressure release structure of oilhole and steel ball combination by the second in second oil port department design for it can be when the piston rod stretches out, in time carries out the pressure release to the inside oil pressure of cylinder body, system pressure when reducing piston and uide bushing contact, the life of extension hydro-cylinder can also reduce the starting pressure when the piston rod retracts, makes its novel pressure release structure hydro-cylinder that the start-up reaction is fast.
The technical scheme of the utility model: the utility model provides a novel pressure release structure hydro-cylinder, includes cylinder body, cylinder bottom, piston and piston rod, keeping away from of cylinder body is equipped with the uide bushing of cooperation piston rod on the cylinder bottom, the piston becomes the inside partition of cylinder body and has pole chamber and rodless chamber, the rodless chamber end of cylinder body is equipped with first hydraulic fluid port and is used for the first oilhole of crossing of first hydraulic fluid port of intercommunication and rodless chamber, and the oilhole is crossed to the second that has the pole chamber end to be equipped with second hydraulic fluid port, intercommunication second hydraulic fluid port and rodless chamber and intercommunication second hydraulic fluid port and have at least one third in pole chamber to cross the oilhole, second hydraulic fluid port and second cross the steel ball groove that is equipped with steel ball and cooperation steel ball between the oilhole.
The utility model discloses the pressure release structure of oilhole and steel ball combination is crossed by the second in the design of second oilhole department for it can in time carry out the pressure release to the inside oil pressure of cylinder body when the piston rod stretches out, system pressure when reducing the contact of piston and uide bushing, the life of extension hydro-cylinder can also reduce the starting pressure when the piston rod retracts, makes its start-up reaction fast.
Preferably, the piston is locked at one end of the piston rod through a locknut, a cotter pin matched with the locknut is arranged at one end of the piston rod, and a first O-shaped ring is arranged between the inner wall of the piston and the outer wall of the piston rod.
This structure ensures the connection reliability and sealing property of the piston and the piston rod.
Preferably, a support ring and a double-acting sealing piece are arranged between the outer wall of the piston and the inner wall of the cylinder body, the support ring is positioned on the side, close to the first oil port, of the piston, and the double-acting sealing piece is positioned on the side, far away from the first oil port, of the piston.
This structure ensures the support stability and the sealing between the piston and the cylinder.
Preferably, the guide sleeve is fixed at one end of the cylinder body through a hole steel wire retainer ring and a shaft elastic retainer ring, the hole steel wire retainer ring is positioned between the outer wall of the guide sleeve and the inner wall of the cylinder body, the shaft elastic retainer ring is positioned between the outer wall of the guide sleeve and the outer end face of the cylinder body, and a stop block is arranged between the shaft elastic retainer ring and the outer end face of the cylinder body.
The structure ensures the connection firmness between the guide sleeve and the cylinder body.
Preferably, a second O-shaped ring and a first blocking piece matched with the second O-shaped ring are arranged between the outer wall of the guide sleeve and the inner wall of the cylinder body, the second O-shaped ring is located on the side, close to the third oil passing hole, of the guide sleeve, and the steel wire check ring for the hole is located between the first blocking piece and the blocking piece.
This kind of structure guarantees the leakproofness between uide bushing and the cylinder body.
Preferably, a dustproof ring, a shaft sealing ring and a second baffle sheet matched with the shaft sealing ring are arranged between the inner wall of the guide sleeve and the outer wall of the piston rod, and the dustproof ring is located at the outer end of the guide sleeve.
The structure ensures the sealing property between the guide sleeve and the piston rod and simultaneously ensures the dustproof effect of the guide sleeve.
Preferably, a first oil port plug is arranged on the first oil port, and a second oil port plug is arranged on the second oil port; and the cylinder bottom is provided with a mounting lug and a lug hole.
The structure enables the first oil port and the second oil port to be well blocked when not used, and meanwhile, the oil cylinder is convenient to install and carry.
The utility model discloses cross the pressure release structure of oilhole and steel ball combination by the second in the design of second oilhole department for it can in time carry out the pressure release to the inside oil pressure of cylinder body when the piston rod stretches out, system pressure when reducing the contact of piston and uide bushing, the life of extension hydro-cylinder can also reduce the starting pressure when the piston rod retracts, makes its start-up reaction fast, and overall structure is simple simultaneously, convenient assembling, and stability is good.
Drawings
Fig. 1 is a sectional view of the piston rod of the present invention in a fully retracted state;
fig. 2 is a sectional view of the piston rod of the present invention in a fully extended state;
fig. 3 is a partial cross-sectional view of the present invention;
FIG. 4 is an enlarged schematic view at I of FIG. 1;
in the drawing, 1, a locknut, 2, a piston, 3, a support ring, 4, a double-acting sealing element, 5, a first O-shaped ring, 6, a piston rod, 7, a cylinder body, 8, a steel ball, 9, a second O-shaped ring, 10, a first baffle, 11, a hole steel wire retaining ring, 12, a stop block, 13, a shaft elastic retaining ring, 14, a guide sleeve, 15, a dust-proof ring, 16, a shaft sealing ring, 17, a second baffle, 18, a first oil port, 19, a second oil port, 20, a split pin, 21, a rodless cavity, 22, a rod cavity, 23, a first oil passing hole, 24, a second oil passing hole, 25, a third oil passing hole, 26, a steel ball groove, 27, a first oil port, 28, a second oil port, 29, a cylinder bottom, 30, a mounting lug and 31, a lug hole are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1 to 4, a novel oil cylinder with a pressure relief structure comprises a cylinder body 7, a cylinder bottom 29, a piston 2 and a piston rod 6, wherein a guide sleeve 14 matched with the piston rod 6 is arranged at the end of the cylinder body 7, which is far away from the cylinder bottom 29, the piston 2 divides the interior of the cylinder body 7 into a rod cavity 22 and a rodless cavity 21, a first oil port 18 and a first oil passing hole 23 for communicating the first oil port 18 with the rodless cavity 21 are arranged at the rodless cavity end of the cylinder body 7, a second oil port 19, a second oil passing hole 24 for communicating the second oil port 19 with the rodless cavity 21 and two third oil passing holes 25 for communicating the second oil port 19 with the rod cavity 22 are arranged at the rod cavity end of the cylinder body 7, and a steel ball 8 and a steel ball groove 26 matched with the steel ball 8 are arranged between the second oil port 19 and the second oil passing hole 24. The piston 2 is locked at one end of the piston rod 6 through a locknut 1, a cotter 20 matched with the locknut 1 is arranged at one end of the piston rod 6, and a first O-shaped ring 5 is arranged between the inner wall of the piston 2 and the outer wall of the piston rod 6. A support ring 3 and a double-acting sealing piece 4 are arranged between the outer wall of the piston 2 and the inner wall of the cylinder 7, the support ring 3 is positioned on the piston 2 and close to the first oil port side, and the double-acting sealing piece 4 is positioned on the piston 2 and far away from the first oil port side. The guide sleeve 14 is fixed at one end of the cylinder body 7 through a hole steel wire retainer ring 11 and a shaft elastic retainer ring 13, the hole steel wire retainer ring 11 is positioned between the outer wall of the guide sleeve 14 and the inner wall of the cylinder body 7, the shaft elastic retainer ring 13 is positioned between the outer wall of the guide sleeve 14 and the outer end face of the cylinder body 7, and a stop 12 is arranged between the shaft elastic retainer ring 13 and the outer end face of the cylinder body 7. A second O-shaped ring 9 and a first baffle plate 10 matched with the second O-shaped ring 9 are arranged between the outer wall of the guide sleeve 14 and the inner wall of the cylinder body 7, the second O-shaped ring 9 is positioned on the guide sleeve 14 and close to the third oil through hole side, and a steel wire baffle ring 11 for the hole is positioned between the first baffle plate 10 and a baffle block 12. A dustproof ring 15, a shaft sealing ring 16 and a second baffle 17 matched with the shaft sealing ring 16 are arranged between the inner wall of the guide sleeve 14 and the outer wall of the piston rod 6, and the dustproof ring 15 is positioned at the outer end of the guide sleeve 14. A first oil port plug 27 is arranged on the first oil port 18, and a second oil port plug 28 is arranged on the second oil port 19; the cylinder bottom 29 is provided with mounting lugs 30 and lug holes 31.
The utility model discloses mainly used agricultural machine, its theory of operation is:
high-pressure oil enters the rodless cavity from the first oil port, the high-pressure oil pushes the piston to move, when the piston rod extends completely, the double-acting sealing element on the piston is positioned between the second oil passing hole and the third oil passing hole closest to the second oil passing hole, the hydraulic oil pushes the steel ball on the second oil passing hole open through the gap of the support ring, and the hydraulic oil in the rodless cavity is communicated with the second oil port, so that the pressure in the rodless cavity is reduced, and the pressure relief effect is achieved;
when hydraulic oil entered from the second hydraulic fluid port, the steel ball blocked the second oil passing hole, the second hydraulic fluid port was obstructed with no rod chamber, and hydraulic oil could only pass the oilhole from two third and entered into there is the rod chamber.
The utility model discloses the combination of steel ball and second oilhole is equivalent to the check valve. The steel ball is arranged between the second oil port and the second oil passing hole, an oblique angle is formed above the second oil passing hole to form a steel ball groove for placing the steel ball, and the steel ball can only longitudinally move in the steel ball groove above the second oil passing hole and cannot transversely move.
The utility model discloses there is the support ring between piston and cylinder body, avoid piston and cylinder body direct contact fish tail cylinder body, it seals to have two effect sealing member between piston and the cylinder body, there is the dust ring between uide bushing and the piston rod, the sealing washer is used for the axle, the second separation blade is used for dustproof and sealed, there is second O type circle between uide bushing and the cylinder body, first separation blade and hole are used for sealed and limiting displacement with steel wire retainer ring, prevent that the oil pressure from releasing the uide bushing, install dog and axle circlip on the uide bushing, prevent that the uide bushing from removing to the cylinder body the inside.
The utility model discloses cross the pressure release structure of oilhole and steel ball combination by the second in the design of second oilhole department for it can in time carry out the pressure release to the inside oil pressure of cylinder body when the piston rod stretches out, system pressure when reducing the contact of piston and uide bushing, the life of extension hydro-cylinder, starting pressure when can also reducing the piston rod withdrawal, make its start-up reaction fast, reduce piston rod withdrawal time, overall structure is simple simultaneously, and convenient assembling, stability is good.
Claims (7)
1. The utility model provides a novel pressure release structure hydro-cylinder, includes cylinder body, cylinder bottom, piston and piston rod, its characterized in that: the cylinder body is far away from the guide sleeve which is provided with the matched piston rod on the bottom end, the piston divides the interior of the cylinder body into a rod cavity and a rodless cavity, the rodless cavity end of the cylinder body is provided with a first oil port and a first oil passing hole which is used for communicating the first oil port with the rodless cavity, the rod cavity end of the cylinder body is provided with a second oil port, a second oil passing hole which is used for communicating the second oil port with the rodless cavity, and at least one third oil passing hole which is used for communicating the second oil port with the rod cavity, and a steel ball groove which is used for matching the steel ball is arranged between the second oil port and the second oil passing hole.
2. The novel oil cylinder with the pressure relief structure as claimed in claim 1, wherein: the piston is locked at one end of the piston rod through a locknut, a cotter pin matched with the locknut is arranged at one end of the piston rod, and a first O-shaped ring is arranged between the inner wall of the piston and the outer wall of the piston rod.
3. The novel oil cylinder with the pressure relief structure as claimed in claim 1, wherein: and a support ring and a double-acting sealing piece are arranged between the outer wall of the piston and the inner wall of the cylinder body, the support ring is positioned on the piston and close to the first oil port side, and the double-acting sealing piece is positioned on the piston and far away from the first oil port side.
4. The novel oil cylinder with the pressure relief structure as claimed in claim 1, wherein: the guide sleeve is fixed at one end of the cylinder body through a hole steel wire check ring and a shaft elastic check ring, the hole steel wire check ring is positioned between the outer wall of the guide sleeve and the inner wall of the cylinder body, the shaft elastic check ring is positioned between the outer wall of the guide sleeve and the outer end face of the cylinder body, and a stop block is arranged between the shaft elastic check ring and the outer end face of the cylinder body.
5. The novel oil cylinder with the pressure relief structure as claimed in claim 4, wherein: and a first separation blade of a second O-shaped ring and a second O-shaped ring is arranged between the outer wall of the guide sleeve and the inner wall of the cylinder body, the second O-shaped ring is positioned on the side, close to the third oil through hole, of the guide sleeve, and the steel wire check ring for the hole is positioned between the first separation blade and the check block.
6. The novel oil cylinder with the pressure relief structure as claimed in claim 1, wherein: be equipped with dust ring, axle and cooperate the second separation blade of axle with the sealing washer between the inner wall of uide bushing and the outer wall of piston rod, the dust ring is located the outer end of uide bushing.
7. The novel oil cylinder with the pressure relief structure as claimed in claim 1, wherein: a first oil port plug is arranged on the first oil port, and a second oil port plug is arranged on the second oil port; and the cylinder bottom is provided with a mounting lug and a lug hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221256661.7U CN217582681U (en) | 2022-05-24 | 2022-05-24 | Novel pressure relief structure hydro-cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221256661.7U CN217582681U (en) | 2022-05-24 | 2022-05-24 | Novel pressure relief structure hydro-cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582681U true CN217582681U (en) | 2022-10-14 |
Family
ID=83554849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221256661.7U Active CN217582681U (en) | 2022-05-24 | 2022-05-24 | Novel pressure relief structure hydro-cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582681U (en) |
-
2022
- 2022-05-24 CN CN202221256661.7U patent/CN217582681U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102032170A (en) | Isolating device for plunger slurry pump | |
| CN217582681U (en) | Novel pressure relief structure hydro-cylinder | |
| CN201007295Y (en) | Wet-type electromagnetic direction changing valve | |
| CN205089725U (en) | Self -lock device of cylinder for environmental sanitation special car | |
| CN204739033U (en) | Interior formula buffering hydro -cylinder of letting out | |
| CN201991870U (en) | Tensioning oil cylinder | |
| CN214788319U (en) | Multi-chamber hydraulic cylinder with bidirectional buffering function | |
| CN205244009U (en) | Terminal machinery auto -lock hydro -cylinder | |
| CN209740589U (en) | Hollow double-acting oil jack | |
| CN219062130U (en) | Single-acting piston cylinder without exhaust hole | |
| CN217421706U (en) | Piston spacer sleeve integrated telescopic oil cylinder | |
| CN217682126U (en) | Novel loader brake booster pump | |
| CN219639160U (en) | Hydraulic lock special for steering engine | |
| CN219585732U (en) | Self-lubricating vertical jack | |
| CN214221652U (en) | Hydraulic control one-way valve for railway switch electrohydraulic switcher | |
| CN112065806A (en) | Hydraulic cylinder unloading structure | |
| CN201372982Y (en) | Novel hydraulic cylinder | |
| CN212509054U (en) | Multidirectional band-type brake type oil cylinder with self-locking function | |
| CN202690240U (en) | Engine pressure compensation system | |
| CN214367006U (en) | Oil cylinder and operation machine | |
| CN211314923U (en) | Braking device for multi-axle vehicle | |
| CN217055793U (en) | Oil leakage analysis and improvement device for oil cylinder of wrecker | |
| CN207363987U (en) | A kind of spacing valve gear | |
| CN216478155U (en) | Novel hydraulic cylinder threaded cylinder cover static sealing structure | |
| CN219588194U (en) | Hydraulic control one-way valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |