CN216199444U - Hydraulic oil cylinder with adjustable sealing performance - Google Patents
Hydraulic oil cylinder with adjustable sealing performance Download PDFInfo
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- CN216199444U CN216199444U CN202122495671.8U CN202122495671U CN216199444U CN 216199444 U CN216199444 U CN 216199444U CN 202122495671 U CN202122495671 U CN 202122495671U CN 216199444 U CN216199444 U CN 216199444U
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Abstract
The utility model relates to a hydraulic oil cylinder with adjustable sealing performance, which comprises a piston cylinder, a piston rod, a first sealing plate and an adjusting mechanism, wherein the adjusting mechanism comprises an air bag, a second sealing plate, a connecting rod, an adjusting assembly and a positioning assembly, the hydraulic oil cylinder with adjustable sealing performance enables air at the bottom end inside a groove to be extruded into the air bag through a sliding block through the adjusting mechanism, so that the air bag deforms, the contact area between the air bag and the inside of the piston cylinder is increased through the air bag, the air bag is always abutted against the inner wall of the piston cylinder, the sealing effect is improved, micro-adjustment of the air bag is realized through the matching of a lead screw and a threaded block, the adjustment of a gap between the air bag and the inner wall of the piston cylinder is realized, the practicability of use is improved, the service life is prolonged, the limit of the connecting rod is realized through the positioning assembly, and the rotation of the connecting rod is prevented.
Description
Technical Field
The utility model particularly relates to a hydraulic oil cylinder with adjustable sealing performance.
Background
The hydraulic oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion), has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, and is widely applied to hydraulic systems of various machines.
Hydraulic cylinder mainly seals through inside sealing washer, but current sealing washer structure is comparatively simple, can increase the clearance between sealing washer and the hydraulic cylinder after using for a long time to influence sealed effect, the practicality is not strong.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to overcome the defects of the prior art, the hydraulic oil cylinder with adjustable sealing performance is provided.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a hydraulic oil cylinder with adjustable sealing performance comprises a piston cylinder, a piston rod, a first sealing plate and an adjusting mechanism, wherein the piston cylinder is horizontally arranged, the piston rod is horizontally arranged on one side of the piston cylinder, the first sealing plate is arranged in the piston cylinder, one end of the piston rod extends into the piston cylinder and is connected with the first sealing plate, the first sealing plate is connected with the piston cylinder in a sliding and sealing mode, a vertical cylindrical groove is formed in the end face, away from one end of the piston cylinder, of the piston rod, and the adjusting mechanism is arranged in the groove;
the adjusting mechanism comprises an air bag, a second sealing plate, a connecting rod, an adjusting assembly and a positioning assembly, the second sealing plate is arranged in the piston cylinder, the second sealing plate is located at one end, away from the piston rod, of the first sealing plate, the air bag is arranged between the first sealing plate and the second sealing plate, one end of the air bag is connected with the first sealing plate, the other end of the air bag is connected with the second sealing plate, the connecting rods are uniformly arranged along the circumferential direction of the outer ring of the piston rod and are located between the first sealing plate and the second sealing plate, one end of the connecting rod is connected with the first sealing plate, the other end of the connecting rod penetrates through the air bag to be connected with the second sealing plate, and the connecting rod is connected with the air bag in a sliding and sealing mode;
the adjusting component comprises a communicating pipe, a sliding block, a connecting rod, a screw rod, a first spring, a thread block and a bearing seat, the bearing seat is arranged in the groove, the sliding block is positioned at one side of the bearing seat close to the first sealing plate, the sliding block is connected with the groove in a sliding and sealing manner, the screw rod is arranged between the sliding block and the bearing seat, the connecting rod is arranged between the screw rod and the bearing seat, the connecting rod is arranged in a hollow manner, the thread block is arranged in one end of the connecting rod away from the bearing seat, the first spring is arranged in the connecting rod, one end of the screw rod is connected with the sliding block, the other end of the screw rod extends into the connecting rod and is connected with the first spring, the screw rod is connected with the connecting rod in a sliding manner, the screw rod penetrates through the thread block, the screw rod is connected with the thread block in a threaded manner, and one end of the connecting rod away from the screw rod is connected with the bearing seat, the one end that the lead screw was kept away from to first spring is connected with the inner wall of connecting rod one side, the connecting rod is kept away from one of lead screw and is served and be equipped with the cross draw-in groove, communicating pipe sets up between gasbag and connecting rod, the one end and the inside intercommunication of recess of communicating pipe, the other end of communicating pipe passes first closing plate and gasbag intercommunication, locating component sets up on the piston rod, locating component is connected with the connecting rod.
In order to realize the location to the connecting rod, prevent the rotation of connecting rod, locating component includes locating lever, thimble, second spring and locating plate, the locating plate sets up the one side at the piston rod, the thimble sets up between the inner wall of the outer lane of connecting rod and recess, be equipped with a plurality of constant head tanks on the connecting rod, each constant head tank evenly sets up along the outer lane circumference of connecting rod, the thimble is located the constant head tank, the locating lever sets up between thimble and locating plate, the one end and the locating plate of locating lever are connected, the other end of locating lever passes the piston rod and is connected with the thimble, the second spring sets up between locating plate and piston rod, the second spring housing is established on the locating lever, the one end and the locating plate of second spring are connected, the other end and the piston rod of second spring are connected.
In order to increase the contact area between the sealing plate and the piston cylinder, an annular sealing groove is respectively arranged on the outer rings of the first sealing plate and the second sealing plate, a sealing ring is arranged in the sealing groove, the first sealing plate is in sliding and sealing connection with the piston cylinder through the sealing ring, and the second sealing plate is in sliding and sealing connection with the piston cylinder through the sealing ring.
In order to reduce friction force and improve sealing effect, the inner wall of the piston cylinder is a mirror surface.
The hydraulic oil cylinder with adjustable sealing performance has the beneficial effects that two-layer sealing of the piston cylinder is realized through the first sealing plate and the second sealing plate, the contact area between the hydraulic oil cylinder and the inner wall of the piston cylinder is increased through the rubber ring, the sealing effect is improved, the air at the bottom end inside the groove is extruded into the air bag through the sliding block through the adjusting mechanism, the air bag is deformed, the contact area between the hydraulic oil cylinder and the inner wall of the piston cylinder is increased through the air bag, the air bag is always abutted against the inner wall of the piston cylinder, the sealing effect is improved, the micro-adjustment of the air bag is realized through the matching of the screw rod and the threaded block, the adjustment of a gap between the air bag and the inner wall of the piston cylinder is realized, the practicability of use is improved, the service life is prolonged, the limit of the connecting rod is realized through the positioning assembly, and the rotation of the connecting rod is prevented.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a hydraulic cylinder with adjustable sealing performance according to the present invention;
FIG. 2 is a schematic view of the connection structure of the hydraulic oil cylinder connecting rod, the screw rod, the first spring, the thread block, the bearing seat and the positioning assembly with adjustable sealing performance of the utility model;
FIG. 3 is an enlarged view of portion A of FIG. 2;
in the figure: 1. the piston comprises a piston cylinder, 2 piston rods, 3 first sealing plates, 4 air bags, 5 second sealing plates, 6 connecting rods, 7 communicating pipes, 8 sliding blocks, 9 connecting rods, 10 lead screws, 11 first springs, 12 thread blocks, 13 bearing seats, 14 positioning rods, 15 ejector pins, 16 second springs, 17 positioning plates and 18 sealing rings.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-2, a hydraulic cylinder with adjustable sealing performance comprises a piston cylinder 1, a piston rod 2, a first sealing plate 3 and an adjusting mechanism, wherein the piston cylinder 1 is horizontally arranged, the piston rod 2 is horizontally arranged on one side of the piston cylinder 1, the first sealing plate 3 is arranged in the piston cylinder 1, one end of the piston rod 2 extends into the piston cylinder 1 and is connected with the first sealing plate 3, the first sealing plate 3 is connected with the piston cylinder 1 in a sliding and sealing manner, a vertical cylindrical groove is formed in the end surface of the piston rod 2, which is far away from one end of the piston cylinder 1, and the adjusting mechanism is arranged in the groove;
the adjusting mechanism comprises an air bag 4, a second sealing plate 5, a connecting rod 6, an adjusting assembly and a positioning assembly, wherein the second sealing plate 5 is arranged in the piston cylinder 1, the second sealing plate 5 is positioned at one end, far away from the piston rod 2, of the first sealing plate 3, the air bag 4 is arranged between the first sealing plate 3 and the second sealing plate 5, one end of the air bag 4 is connected with the first sealing plate 3, the other end of the air bag 4 is connected with the second sealing plate 5, a plurality of connecting rods 6 are arranged, each connecting rod 6 is uniformly arranged along the circumferential direction of the outer ring of the piston rod 2, the connecting rod 6 is positioned between the first sealing plate 3 and the second sealing plate 5, one end of each connecting rod 6 is connected with the first sealing plate, the other end of each connecting rod 6 penetrates through the air bag 4 to be connected with the second sealing plate 5, and the connecting rods 6 are connected with the air bag 4 in a sliding and sealing manner;
the adjusting component comprises a communicating pipe 7, a sliding block 8, a connecting rod 9, a screw rod 10, a first spring 11, a thread block 12 and a bearing seat 13, wherein the bearing seat 13 is arranged in a groove, the sliding block 8 is arranged in the groove, the sliding block 8 is positioned on one side, close to the first sealing plate 3, of the bearing seat 13, the sliding block 8 is in sliding and sealing connection with the groove, the screw rod 10 is arranged between the sliding block 8 and the bearing seat 13, the connecting rod 9 is arranged between the screw rod 10 and the bearing seat 13, the connecting rod 9 is arranged in a hollow mode, the thread block 12 is arranged in one end, far away from the bearing seat 13, of the connecting rod 9, the first spring 11 is arranged in the connecting rod 9, one end of the screw rod 10 is connected with the sliding block 8, the other end of the screw rod 10 extends into the connecting rod 9 to be connected with the first spring 11, the screw rod 10 is in sliding connection with the connecting rod 9, and the screw rod 10 passes through the thread block 12, the lead screw 10 and the 12 threaded connection of screw block, the one end that lead screw 10 was kept away from to connecting rod 9 is connected with bearing frame 13, the one end that lead screw 10 was kept away from to first spring 11 is connected with the inner wall of connecting rod 9 one side, connecting rod 9 is kept away from one of lead screw 10 and is served and be equipped with the cross draw-in groove, communicating pipe 7 sets up between gasbag 4 and connecting rod 9, the one end and the inside intercommunication of recess of communicating pipe 7, the other end of communicating pipe 7 passes first closing plate 3 and gasbag 4 intercommunication, locating component sets up on piston rod 2, locating component is connected with connecting rod 9.
Here, after the first and second sealing plates 3 and 5 are operated for a long time in the piston cylinder 1, the gap between the first and second sealing plates 3 and 5 and the inner wall of the piston cylinder 1 is enlarged, thereby affecting the sealing effect and the performance of the main body.
This can be achieved by a cross-shaped slot provided on the end of the connecting rod 9 remote from the piston cylinder 1, but here the connecting rod 9 is connected by a bearing block 13, and here the outer ring of the bearing block 13 is connected with the inner wall of the groove, so that here when the connecting rod 9 rotates, the screw block 12 is driven to rotate at the same time, here the screw rod 10 is in threaded connection with the screw block 12, and here the first spring 11 is in a compressed state, the gap between the screw rod 10 and the screw block 12 is reduced by the restoring force of the first spring 11, so that when the connecting rod 9 rotates, the screw rod 10 moves better towards the direction of the first sealing plate 3, here the limit to the sliding block 8 is achieved by the friction force between the sliding block 8 and the groove sliding block, so that the sliding block 8 moves better inside the groove, so that the air inside the groove flows into the air bag 4 through the communication hole, thereby make gasbag 4 take place deformation, at this moment gasbag 4's outer lane will lean on with piston barrel 1's inner wall to support, thereby area of contact between increase and the piston barrel 1, reduce and the clearance between the piston barrel 1, thereby promote sealed effect, and here through the cooperation between lead screw 10 and the screw thread piece 12, make the micro-displacement to sliding block 8, thereby realize the control to gasbag 4 inflation degree, realize the fine setting to gasbag 4, and the service life is prolonged, and the practicality of use is improved.
In order to realize the positioning of the connecting rod 9 and prevent the connecting rod 9 from rotating, as shown in fig. 3, the positioning assembly comprises a positioning rod 14, a thimble 15, a second spring 16 and a positioning plate 17, the positioning plate 17 is arranged at one side of the piston rod 2, the thimble 15 is arranged between the outer ring of the connecting rod 9 and the inner wall of the groove, a plurality of positioning grooves are arranged on the connecting rod 9, the positioning grooves are uniformly arranged along the circumferential direction of the outer ring of the connecting rod 9, the thimble 15 is positioned in the positioning groove, the positioning rod 14 is arranged between the thimble 15 and the positioning plate 17, one end of the positioning rod 14 is connected with the positioning plate 17, the other end of the positioning rod 14 passes through the piston rod 2 to be connected with the thimble 15, the second spring 16 is arranged between the positioning plate 17 and the piston rod 2, the second spring 16 is sleeved on the positioning rod 14, one end of the second spring 16 is connected with the positioning plate 17, and the other end of the second spring 16 is connected with the piston rod 2.
In order to increase the contact area between the first sealing plate and the piston cylinder 1, an annular sealing groove is respectively arranged on the outer rings of the first sealing plate 3 and the second sealing plate 5, a sealing ring 18 is arranged in the sealing groove, the first sealing plate 3 is connected with the piston cylinder 1 in a sliding and sealing manner through the sealing ring 18, and the second sealing plate 5 is connected with the piston cylinder 1 in a sliding and sealing manner through the sealing ring 18.
In order to reduce friction force and improve sealing effect, the inner wall of the piston cylinder 1 is a mirror surface
When the connecting rod 9 needs to be rotated, the positioning plate 17 is pulled firstly, so that the positioning plate 17 moves towards the direction away from the piston rod 2, the positioning plate 17 drives the positioning rod 14 to move, the positioning rod 14 drives the ejector pin 15 to move, so that the ejector pin 15 is separated from the connecting rod 9, the second spring 16 is in a stretching state, when the sliding block 8 moves to the preset position, the positioning plate 17 is loosened, the ejector pin 15 moves into the positioning groove through the restoring force of the second spring 16, so that the positioning of the connecting rod 9 is realized, and the rotation of the connecting rod 9 is prevented.
Here, after the first and second sealing plates 3 and 5 are operated for a long time in the piston cylinder 1, the gap between the first and second sealing plates 3 and 5 and the inner wall of the piston cylinder 1 is enlarged, thereby affecting the sealing effect and the performance of the main body.
This can be achieved by a cross-shaped slot provided on the end of the connecting rod 9 remote from the piston cylinder 1, but here the connecting rod 9 is connected by a bearing block 13, and here the outer ring of the bearing block 13 is connected with the inner wall of the groove, so that here when the connecting rod 9 rotates, the screw block 12 is driven to rotate at the same time, here the screw rod 10 is in threaded connection with the screw block 12, and here the first spring 11 is in a compressed state, the gap between the screw rod 10 and the screw block 12 is reduced by the restoring force of the first spring 11, so that when the connecting rod 9 rotates, the screw rod 10 moves better towards the direction of the first sealing plate 3, here the limit to the sliding block 8 is achieved by the friction force between the sliding block 8 and the groove sliding block, so that the sliding block 8 moves better inside the groove, so that the air inside the groove flows into the air bag 4 through the communication hole, thereby make gasbag 4 take place deformation, at this moment gasbag 4's outer lane will lean on with piston barrel 1's inner wall to support, thereby area of contact between increase and the piston barrel 1, reduce and the clearance between the piston barrel 1, thereby promote sealed effect, and here through the cooperation between lead screw 10 and the screw thread piece 12, make the micro-displacement to sliding block 8, thereby realize the control to gasbag 4 inflation degree, realize the fine setting to gasbag 4, and the service life is prolonged, and the practicality of use is improved.
When the connecting rod 9 needs to be rotated, the positioning plate 17 is pulled firstly, so that the positioning plate 17 moves towards the direction away from the piston rod 2, the positioning plate 17 drives the positioning rod 14 to move, the positioning rod 14 drives the ejector pin 15 to move, so that the ejector pin 15 is separated from the connecting rod 9, the second spring 16 is in a stretching state, when the sliding block 8 moves to the preset position, the positioning plate 17 is loosened, the ejector pin 15 moves into the positioning groove through the restoring force of the second spring 16, so that the positioning of the connecting rod 9 is realized, and the rotation of the connecting rod 9 is prevented.
Compared with the prior art, the hydraulic oil cylinder with adjustable sealing performance realizes two-layer sealing to the piston cylinder 1 through the first sealing plate 3 and the second sealing plate 5, the contact area between the air bag and the inner wall of the piston cylinder 1 is increased through the rubber ring, the sealing effect is improved, the air at the bottom end in the groove is extruded into the air bag 4 through the sliding block 8 through the adjusting mechanism, so that the air bag 4 is deformed, the contact area between the air bag 4 and the interior of the piston cylinder 1 is increased, so that the air bag 4 is always abutted against the inner wall of the piston cylinder 1, the sealing effect is improved, the micro-adjustment of the air bag 4 is realized through the matching of the screw rod 10 and the thread block 12, the adjustment of the gap between the air bag 4 and the inner wall of the piston cylinder 1 is realized, the practicability of use is improved, the service life is prolonged, the limit of the connecting rod 9 is realized through the positioning assembly, and the rotation of the connecting rod 9 is prevented.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The hydraulic oil cylinder with adjustable sealing performance is characterized by comprising a piston cylinder (1), a piston rod (2), a first sealing plate (3) and an adjusting mechanism, wherein the piston cylinder (1) is horizontally arranged, the piston rod (2) is horizontally arranged on one side of the piston cylinder (1), the first sealing plate (3) is arranged in the piston cylinder (1), one end of the piston rod (2) extends into the piston cylinder (1) to be connected with the first sealing plate (3), the first sealing plate (3) is connected with the piston cylinder (1) in a sliding and sealing mode, a vertical cylindrical groove is formed in the end face, away from one end of the piston cylinder (1), of the piston rod (2), and the adjusting mechanism is arranged in the groove;
the adjusting mechanism comprises an air bag (4), a second sealing plate (5), a connecting rod (6), an adjusting assembly and a positioning assembly, wherein the second sealing plate (5) is arranged in the piston cylinder (1), the second sealing plate (5) is positioned at one end, far away from the piston rod (2), of the first sealing plate (3), the air bag (4) is arranged between the first sealing plate (3) and the second sealing plate (5), one end of the air bag (4) is connected with the first sealing plate (3), the other end of the air bag (4) is connected with the second sealing plate (5), a plurality of connecting rods (6) are arranged, each connecting rod (6) is uniformly arranged along the circumferential direction of the outer ring of the piston rod (2), the connecting rod (6) is positioned between the first sealing plate (3) and the second sealing plate (5), one end of each connecting rod (6) is connected with the first sealing, and the other end of each connecting rod (6) penetrates through the air bag (4) to be connected with the second sealing plate (5), the connecting rod (6) is connected with the air bag (4) in a sliding and sealing manner;
the adjusting assembly comprises a communicating pipe (7), a sliding block (8), a connecting rod (9), a screw rod (10), a first spring (11), a thread block (12) and a bearing seat (13), the bearing seat (13) is arranged in a groove, the sliding block (8) is arranged in the groove, the sliding block (8) is positioned on one side, close to the first sealing plate (3), of the bearing seat (13), the sliding block (8) is in sliding and sealing connection with the groove, the screw rod (10) is arranged between the sliding block (8) and the bearing seat (13), the connecting rod (9) is arranged between the screw rod (10) and the bearing seat (13), the connecting rod (9) is arranged in a hollow mode, the thread block (12) is arranged in one end, far away from the bearing seat (13), of the connecting rod (9), the first spring (11) is arranged in the connecting rod (9), one end of the screw rod (10) is connected with the sliding block (8), the other end of the lead screw (10) extends into the connecting rod (9) and is connected with a first spring (11), the lead screw (10) is connected with the connecting rod (9) in a sliding manner, the lead screw (10) penetrates through the threaded block (12), the lead screw (10) is in threaded connection with the threaded block (12), one end, far away from the lead screw (10), of the connecting rod (9) is connected with a bearing seat (13), one end, far away from the lead screw (10), of the first spring (11) is connected with the inner wall of one side of the connecting rod (9), one end, far away from the lead screw (10), of the connecting rod (9) is provided with a cross-shaped clamping groove, the communicating pipe (7) is arranged between the air bag (4) and the connecting rod (9), one end of the communicating pipe (7) is communicated with the inside of the groove, the other end of the communicating pipe (7) penetrates through the first sealing plate (3) and is communicated with the air bag (4), and the positioning assembly is arranged on the piston rod (2), the positioning component is connected with the connecting rod (9).
2. The hydraulic oil cylinder with adjustable sealing performance according to claim 1, characterized in that the positioning assembly comprises a positioning rod (14), an ejector pin (15), a second spring (16) and a positioning plate (17), the positioning plate (17) is arranged at one side of the piston rod (2), the ejector pin (15) is arranged between the outer ring of the connecting rod (9) and the inner wall of the groove, a plurality of positioning grooves are arranged on the connecting rod (9), the positioning grooves are uniformly arranged along the circumferential direction of the outer ring of the connecting rod (9), the ejector pin (15) is positioned in the positioning grooves, the positioning rod (14) is arranged between the ejector pin (15) and the positioning plate (17), one end of the positioning rod (14) is connected with the positioning plate (17), the other end of the positioning rod (14) passes through the piston rod (2) to be connected with the ejector pin (15), the second spring (16) is arranged between the positioning plate (17) and the piston rod (2), the second spring (16) is sleeved on the positioning rod (14), one end of the second spring (16) is connected with the positioning plate (17), and the other end of the second spring (16) is connected with the piston rod (2).
3. The hydraulic oil cylinder with adjustable sealing performance as claimed in claim 1, characterized in that the outer rings of the first sealing plate (3) and the second sealing plate (5) are respectively provided with an annular sealing groove, a sealing ring (18) is arranged in each sealing groove, the first sealing plate (3) is connected with the piston cylinder (1) in a sliding and sealing manner through the sealing ring (18), and the second sealing plate (5) is connected with the piston cylinder (1) in a sliding and sealing manner through the sealing ring (18).
4. Hydraulic cylinder with adjustable sealing capacity according to claim 1, characterised in that the inner wall of the piston cylinder (1) is a mirror surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122495671.8U CN216199444U (en) | 2021-10-15 | 2021-10-15 | Hydraulic oil cylinder with adjustable sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122495671.8U CN216199444U (en) | 2021-10-15 | 2021-10-15 | Hydraulic oil cylinder with adjustable sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199444U true CN216199444U (en) | 2022-04-05 |
Family
ID=80883094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122495671.8U Active CN216199444U (en) | 2021-10-15 | 2021-10-15 | Hydraulic oil cylinder with adjustable sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216199444U (en) |
-
2021
- 2021-10-15 CN CN202122495671.8U patent/CN216199444U/en active Active
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