CN213954045U - Small-size pneumatic cylinder - Google Patents
Small-size pneumatic cylinder Download PDFInfo
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- CN213954045U CN213954045U CN202022588946.8U CN202022588946U CN213954045U CN 213954045 U CN213954045 U CN 213954045U CN 202022588946 U CN202022588946 U CN 202022588946U CN 213954045 U CN213954045 U CN 213954045U
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- cylinder body
- cylinder
- output shaft
- oil
- shutoff piece
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Abstract
The utility model discloses a small-size pneumatic cylinder, including cylinder body, output shaft and back lid, output shaft one end sets up in the cylinder body, just the output shaft divides into first hydraulic pressure chamber and second hydraulic pressure chamber with the cylinder body is inside, the output shaft other end extends the cylinder body, back lid is opened and is equipped with first oilhole, first oilhole and first hydraulic pressure chamber intercommunication, the cylinder body corresponds second hydraulic pressure chamber and is equipped with the second oilhole, the back lid is close to cylinder body one side and is equipped with the shutoff piece, the shutoff piece inserts in the cylinder body, the cylinder body is close to shutoff piece one side and is equipped with the bulge loop, the recess with bulge loop looks adaptation is seted up on shutoff piece surface, cylinder body and shutoff piece pass through bulge loop and recess interference fit, just the recess surface is equipped with the sealing ring. The utility model provides a small-size pneumatic cylinder has the sealed effect betterly, ensures that the pneumatic cylinder can normally use.
Description
Technical Field
The utility model relates to the technical field of mechanical equipment, especially, relate to a small-size pneumatic cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). Simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.
The existing hydraulic cylinder comprises a piston type, a plunger type, a multi-stage telescopic sleeve type, a rack and pinion type and the like, wherein a piston type structure can realize linear reciprocating motion by enabling pressure oil or oil return through oil ports A and B at the inlet and the outlet of two ends of a cylinder body. The existing piston structure is easy to cause leakage of hydraulic oil between the cylinder body and the rear cover, so that the oil cylinder can not convert hydraulic energy into mechanical energy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a small-size pneumatic cylinder has better sealed effect, ensures that the pneumatic cylinder can normally use.
The utility model discloses a technical scheme that small-size pneumatic cylinder adopted is:
the utility model provides a small-size pneumatic cylinder, includes cylinder body, output shaft and back lid, output shaft one end sets up in the cylinder body, just the output shaft divides into first hydraulic pressure chamber and second hydraulic pressure chamber with the cylinder body is inside, the output shaft other end extends the cylinder body, the back lid is opened and is equipped with first oilhole, first oilhole and first hydraulic pressure chamber intercommunication, the cylinder body corresponds second hydraulic pressure chamber and is equipped with the second oilhole, the back lid is close to cylinder body one side and is equipped with the shutoff piece, the shutoff piece inserts in the cylinder body, the cylinder body is close to shutoff piece one side and is equipped with the bulge loop, the recess with bulge loop looks adaptation is seted up on shutoff piece surface, cylinder body and shutoff piece pass through bulge loop and recess interference fit, just the recess surface is equipped with the sealing.
Preferably, one side of the rear cover is provided with a first oil joint which is communicated with the first oil hole, and one side of the cylinder body is provided with a second oil joint which is connected with the second oil hole.
Preferably, a hydraulic cylinder flange is arranged between the output shaft and the cylinder body, and the output shaft is connected with the cylinder body through the hydraulic cylinder flange.
As a preferred scheme, a fixing plate is arranged on one side, away from the rear cover, of the cylinder body, and the fixing plate is sleeved on the periphery of the hydraulic cylinder flange.
As a preferred scheme, the output shaft includes ejecting portion and barrier portion, the barrier portion sets up in ejecting portion one side, just the barrier portion is located the cylinder body, the barrier portion surface is equipped with oil blanket and two wear-resisting rings, two wear-resisting rings set up respectively in the both sides of oil blanket.
The utility model discloses a small-size pneumatic cylinder's beneficial effect is: through the first oilhole of back lid and the second oilhole of cylinder body, the oil feed and the play oil of controlling first hydraulic pressure chamber and second hydraulic pressure chamber respectively to the control output shaft promotes and contracts. Be equipped with the bulge loop on one side of the cylinder body near the shutoff piece, and the shutoff piece surface be equipped with the recess of bulge loop looks adaptation, utilize and carry out interference fit between bulge loop and the recess to make the clearance between cylinder body and the back lid become curved structure, increased the degree of difficulty that hydraulic oil in the cylinder body leaked from the junction between back lid and the cylinder body, thereby make the connection between back lid and the cylinder body inseparabler. And still be equipped with the sealing ring on the recess surface, utilize the sealing ring to fill the clearance between the shutoff piece of back lid and the cylinder body to improve the leakproofness between cylinder body and the back lid, avoided the hydraulic oil in the cylinder body directly to leak from between shutoff piece and the cylinder body, ensure that the pneumatic cylinder can normally use.
Drawings
Fig. 1 is a schematic structural diagram of a small hydraulic cylinder of the present invention;
fig. 2 is an exploded view of a small hydraulic cylinder according to the present invention;
fig. 3 is a schematic view of the internal structure of a small hydraulic cylinder according to the present invention;
fig. 4 is an enlarged view of a in fig. 3.
Detailed Description
The invention will be further elucidated and described with reference to the following embodiments and drawings in which:
referring to fig. 1, 2 and 3, a small hydraulic cylinder includes a cylinder body 10, an output shaft 20 and a rear cover 30, wherein one end of the output shaft 20 is disposed in the cylinder body 10, the output shaft 20 divides the interior of the cylinder body 10 into a first hydraulic chamber 11 and a second hydraulic chamber 12, the other end of the output shaft 20 extends out of the cylinder body 10, the rear cover 30 is provided with a first oil hole 31, the first oil hole 31 is communicated with the first hydraulic chamber 11, and the cylinder body 10 is provided with a second oil hole 13 corresponding to the second hydraulic chamber 12.
The oil inlet and outlet of the first and second hydraulic pressure chambers 11 and 12 are controlled through the first oil hole 31 of the rear cover 30 and the second oil hole 13 of the cylinder block 10, respectively, to thereby control the output shaft 20 to be pushed and contracted. When the first oil hole 31 is filled with hydraulic oil, the second oil hole 13 discharges the hydraulic oil, thereby pushing the output shaft 20 toward the outside of the cylinder block 10; when the first oil hole 31 discharges the hydraulic oil, the second oil hole 13 enters the hydraulic oil, thereby contracting the output shaft 20 toward the inside of the cylinder block 10.
The rear cover 30 has a first oil joint 32 on one side thereof, the first oil joint 32 communicating with the first oil hole 31, the cylinder 10 has a second oil joint 14 on one side thereof, and the second oil joint 14 is connected to the second oil hole 13. The connection with the outside is facilitated by the first oil joint 32 and the second oil joint 14.
A cylinder flange 40 is provided between the output shaft 20 and the cylinder block 10, and the output shaft 20 is connected to the cylinder block 10 via the cylinder flange 40, so that the output shaft 20 is prevented from moving excessively in order to restrict the degree of mechanical freedom in the direction of the output shaft 20.
The fixing plate 50 is arranged on one side, away from the rear cover 30, of the cylinder body 10, the fixing plate 50 is sleeved on the periphery of the hydraulic cylinder flange 40, and people can conveniently fix and install the hydraulic cylinder through the fixing plate 50.
Referring to fig. 3 and 4, a sealing member 33 is disposed on a side of the rear cover 30 close to the cylinder 10, the sealing member 33 is inserted into the cylinder 10, a protruding ring 15 is disposed on a side of the cylinder 10 close to the sealing member 33, a groove 331 adapted to the protruding ring 15 is disposed on a surface of the sealing member 33, the cylinder 10 and the sealing member 33 are in interference fit with each other through the protruding ring 15 and the groove 331, and a sealing ring 34 is disposed on a surface of the groove 331.
By means of interference fit between the convex ring 15 and the groove 331, a gap between the cylinder body 10 and the rear cover 30 is of a bent structure, the difficulty of leakage of hydraulic oil in the cylinder body 10 from a joint between the rear cover 30 and the cylinder body 10 is increased, and therefore the connection between the rear cover 30 and the cylinder body 10 is tighter.
And the gap between the blocking piece 33 of the rear cover 30 and the cylinder body 10 is filled by the sealing ring 34, so that the sealing performance between the cylinder body 10 and the rear cover 30 is improved, the hydraulic oil in the cylinder body 10 is prevented from directly leaking between the blocking piece 33 and the cylinder body 10, and the normal use of the hydraulic cylinder is ensured.
In the above scheme, the output shaft 20 includes an ejection portion 21 and a blocking portion 22, the blocking portion 22 is disposed on one side of the ejection portion 21, the blocking portion 22 is located in the cylinder body 10, an oil seal 23 and two wear-resistant rings 24 are disposed on the surface of the blocking portion 22, and the two wear-resistant rings 24 are disposed on two sides of the oil seal 23 respectively.
The interior of the cylinder body 10 is separated through the blocking portion 22 to form two independent first hydraulic pressure cavities 11 and two independent second hydraulic pressure cavities 12, an oil seal 23 and a wear-resistant ring 24 are arranged on the surface of the blocking portion 22, the first hydraulic pressure cavities 11 and the second hydraulic pressure cavities 12 are not communicated with each other through the oil seal 23, the wear-resistant ring 24 can solve the problem of stability when the blocking portion 22 slides in the cylinder body 10, and the output shaft 20 can slide more smoothly.
The utility model provides a small-size pneumatic cylinder, through the first oilhole of back lid and the second oilhole of cylinder body, the oil feed and the oil production in first hydraulic pressure chamber of control and second hydraulic pressure chamber respectively to control output shaft promotes and contracts. Be equipped with the bulge loop on one side of the cylinder body near the shutoff piece, and the shutoff piece surface be equipped with the recess of bulge loop looks adaptation, utilize and carry out interference fit between bulge loop and the recess to make the clearance between cylinder body and the back lid become curved structure, increased the degree of difficulty that hydraulic oil in the cylinder body leaked from the junction between back lid and the cylinder body, thereby make the connection between back lid and the cylinder body inseparabler. And still be equipped with the sealing ring on the recess surface, utilize the sealing ring to fill the clearance between the shutoff piece of back lid and the cylinder body to improve the leakproofness between cylinder body and the back lid, avoided the hydraulic oil in the cylinder body directly to leak from between shutoff piece and the cylinder body, ensure that the pneumatic cylinder can normally use.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The utility model provides a small-size pneumatic cylinder, includes cylinder body, output shaft and back lid, output shaft one end sets up in the cylinder body, just the output shaft divides into first hydraulic pressure chamber and second hydraulic pressure chamber with the cylinder body is inside, the output shaft other end extends the cylinder body, the back lid is opened and is equipped with first oilhole, first oilhole and first hydraulic pressure chamber intercommunication, the cylinder body corresponds second hydraulic pressure chamber and is equipped with the second oilhole, a serial communication port, the back lid is close to cylinder body one side and is equipped with the shutoff piece, the shutoff piece inserts in the cylinder body, the cylinder body is close to shutoff piece one side and is equipped with the bulge loop, the recess with bulge loop looks adaptation is seted up on shutoff piece surface, cylinder body and shutoff piece pass through bulge loop and recess interference fit, just the recess surface is equipped with the.
2. A small-sized hydraulic cylinder according to claim 1, wherein a first oil joint is provided on the side of the rear cover, the first oil joint communicating with the first oil hole, and a second oil joint is provided on the side of the cylinder block, the second oil joint communicating with the second oil hole.
3. A compact hydraulic cylinder as claimed in claim 2, wherein a cylinder flange is provided between the output shaft and the cylinder block, and the output shaft is connected to the cylinder block via the cylinder flange.
4. A small hydraulic cylinder as claimed in claim 3, wherein a fixing plate is provided on the side of the cylinder body away from the rear cover, and the fixing plate is sleeved on the periphery of the flange of the hydraulic cylinder.
5. A small hydraulic cylinder as defined in claim 1, wherein the output shaft includes an ejecting portion and a blocking portion, the blocking portion is disposed on one side of the ejecting portion and is located in the cylinder body, the blocking portion has an oil seal and two wear-resistant rings disposed on two sides of the oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022588946.8U CN213954045U (en) | 2020-11-10 | 2020-11-10 | Small-size pneumatic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022588946.8U CN213954045U (en) | 2020-11-10 | 2020-11-10 | Small-size pneumatic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213954045U true CN213954045U (en) | 2021-08-13 |
Family
ID=77208251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022588946.8U Active CN213954045U (en) | 2020-11-10 | 2020-11-10 | Small-size pneumatic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213954045U (en) |
-
2020
- 2020-11-10 CN CN202022588946.8U patent/CN213954045U/en active Active
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