CN216009911U - Dynamic and static sealing joint and pneumatic clutch - Google Patents
Dynamic and static sealing joint and pneumatic clutch Download PDFInfo
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- CN216009911U CN216009911U CN202122383309.1U CN202122383309U CN216009911U CN 216009911 U CN216009911 U CN 216009911U CN 202122383309 U CN202122383309 U CN 202122383309U CN 216009911 U CN216009911 U CN 216009911U
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- bearing
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- hollow shaft
- air inlet
- sleeve
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- 238000007789 sealing Methods 0.000 title claims abstract description 62
- 230000003068 static effect Effects 0.000 title claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000004513 sizing Methods 0.000 claims description 11
- 238000005299 abrasion Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Joints Allowing Movement (AREA)
Abstract
The utility model provides a sound sealing joint and pneumatic clutch relates to pneumatic clutch technical field. This sound sealing joint includes: the hollow shaft is provided with an air inlet end used for being connected with an air supply pipe and an air outlet end used for being connected with an air inlet pipe orifice of the pneumatic clutch; the inner ring of the bearing is fixedly sleeved on the outer wall of the hollow shaft; the fixed cover of axle sleeve locates the outer lane of bearing, and axle sleeve and hollow shaft rotate to be connected. The shaft sleeve can rotate with the hollow shaft through the bearing, the whole structure is simple, and the operation reliability is high.
Description
Technical Field
The utility model relates to a pneumatic clutch technical field particularly, relates to a sound sealing joint and pneumatic clutch.
Background
The pneumatic clutch is a device which pushes a friction component to transmit power by air pressure and releases the power by a return spring. Pneumatic clutches are used in various ways in various industries, and particularly, pneumatic clutches are more widely used.
However, in the prior art, the dynamic and static sealing joints of the pneumatic clutch are seriously abraded, and the phenomenon of air leakage is easy to occur.
In view of this, the utility model is especially provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sound sealing joint, its simple structure is favorable to improving wearing and tearing and gas leakage phenomenon.
The second objective of the present invention is to provide a pneumatic clutch including the above dynamic and static sealing joint.
The utility model discloses can realize like this:
in a first aspect, the utility model provides a dynamic and static sealing joint, which comprises a hollow shaft, a bearing and a shaft sleeve;
the hollow shaft is provided with an air inlet end used for being connected with an air supply pipe and an air outlet end used for being connected with an air inlet pipe orifice of the pneumatic clutch, and the inner ring of the bearing is fixedly sleeved on the outer wall of the hollow shaft; the fixed cover of axle sleeve locates the outer lane of bearing, and axle sleeve and hollow shaft rotate to be connected.
In an alternative embodiment, the static and dynamic seal joint, the bearing includes a first bearing and a second bearing, and the first bearing and the second bearing are distributed at intervals.
In an alternative embodiment, the hollow shaft is provided with a first positioning groove for positioning the inner ring of the first bearing and a second positioning groove for positioning the inner ring of the second bearing.
In an optional implementation mode, the dynamic and static sealing joint further comprises a bearing outer ring axial positioning sleeve, the bearing outer ring axial positioning sleeve is sleeved outside the hollow shaft (10) and located between the first bearing and the second bearing, and two axial ends of the bearing outer ring axial positioning sleeve are fixedly connected with an outer ring of the first bearing and an outer ring of the second bearing respectively.
In an optional embodiment, the dynamic and static sealing joint further comprises a shaft sleeve fastening end cover, and the shaft sleeve fastening end cover is sleeved outside the hollow shaft and abuts against one side of the shaft sleeve close to the air inlet end.
In an alternative embodiment, the hollow shaft is provided with a third detent, located on the side of the first detent near the air inlet end, for locating the bushing.
In an optional embodiment, the dynamic and static sealing joint further comprises a base bolt, one end face of the base bolt is fixedly connected with one end of the shaft sleeve far away from the air inlet end, and the other end face of the base bolt is used for being fixedly connected with an air inlet pipe orifice of the pneumatic clutch.
In an optional embodiment, the dynamic and static sealing joint further comprises a spring, a sizing block, an O-shaped sealing ring and a dynamic sealing carbon ring which are arranged in the base bolt;
the dynamic sealing carbon ring, the O-shaped sealing ring and the sizing block are sequentially arranged on the end face of one end of the hollow shaft, which is far away from the air inlet end; one end of the spring is connected with one end of the sizing block, which is far away from the hollow shaft, and the other end of the spring is used for abutting against an air inlet pipe orifice of the pneumatic clutch.
In an alternative embodiment, the air inlet end is provided with a threaded portion for connection with an air supply tube.
In a second aspect, the present invention further provides a pneumatic clutch, which includes the dynamic and static sealing joint according to any one of the foregoing embodiments.
The beneficial effects of the utility model include:
the utility model provides a sound sealing joint locates the outer wall of hollow shaft through the fixed cover of inner circle with the bearing, and the outer lane of bearing is located to the fixed cover of axle sleeve, and the axle sleeve rotates with the hollow shaft to be connected, can effectively reduce the wearing and tearing condition of moving static sealing joint, improves gas leakage phenomenon, and overall structure is simple, and the operational reliability is high. The pneumatic clutch with the dynamic and static sealing joint has the advantages of small abrasion, strong sealing property and long service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a dynamic-static seal joint provided in an embodiment of the present application;
fig. 2 is a schematic structural view of a hollow shaft of the dynamic-static sealing joint in fig. 1.
Icon: 100-dynamic and static sealing joints; 10-a hollow shaft; 101-an air inlet end; 102-an air outlet end; 11-a first positioning groove; 12-a second positioning groove; 13-a third positioning groove; 14-a threaded portion; 20-a bearing; 21-a first bearing; 22-a second bearing; 30-shaft sleeve; 40-shaft sleeve fastening end cover; 50-bearing outer ring axial positioning sleeve; 60-base bolts; 71-a spring; 72-sizing block; 73-O type seal ring; 74-dynamic seal carbon ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
The inventor finds that in the prior art, the dynamic and static sealing joints of the pneumatic clutch are seriously worn, the air leakage phenomenon is easy to occur, the failure rate is high, and the pneumatic clutch needs to be frequently maintained and replaced.
In view of the above, referring to fig. 1 and fig. 2, the present embodiment provides a dynamic-static sealing joint 100 to improve or solve the above problem.
The pneumatic clutch (not shown) includes an air supply pipe (not shown), a dynamic and static seal joint 100, and a pneumatic clutch air inlet pipe orifice (not shown). Specifically, a dynamic and static seal joint 100 is installed between an air supply pipe and an air inlet pipe orifice of the pneumatic clutch.
The dynamic-static sealing joint 100 includes a hollow shaft 10, a bearing 20, and a shaft sleeve 30. The hollow shaft 10 is fixedly sleeved on the inner ring of the bearing 20 (that is, the outer wall of the hollow shaft 10 is fixedly sleeved on the inner ring of the bearing 20); the shaft sleeve 30 is fixedly sleeved on the outer ring of the bearing 20 (i.e. the shaft sleeve 30 is fixedly sleeved on the outer ring of the bearing 20), and the shaft sleeve 30 is rotatably connected with respect to the hollow shaft 10.
Because the shaft sleeve 30 can rotate with the hollow shaft 10 through the bearing 20, the whole dynamic and static sealing joint is nested with the hollow shaft 10 through the shaft sleeve 30 to be used as a rotary joint, the abrasion of the joint can be reduced, the whole structure is simple, and the operation reliability is high.
In this embodiment, an air inlet end 101 and an air outlet end 102 are respectively formed at two ends of the hollow shaft 10, the air inlet end 101 is used for being connected with an air supply pipe, and the air outlet end 102 is used for being connected with an air inlet pipe orifice of the pneumatic clutch. The compressed gas is output from an external gas supply pipe to the gas inlet end 101 and enters the hollow shaft 10, and then flows out from the gas outlet end 102 and enters the gas inlet pipe orifice of the pneumatic clutch. The direction of flow of the above-mentioned compressed gas is indicated by the arrow a, for reference.
In this embodiment, the number of the bearings 20 is two, and the bearings are a first bearing 21 and a second bearing 22, and the first bearing 21 and the second bearing 22 are distributed at intervals.
In addition, in other embodiments, the number of bearings 20 may be increased or decreased as long as stable rotation of the sleeve 30 with respect to the hollow shaft 10 can be achieved.
In order to facilitate the installation of the first bearing 21 and the second bearing 22, in the present embodiment, the hollow shaft 10 is provided with a first positioning groove 11 and a second positioning groove 12, the first positioning groove 11 is used for positioning the inner ring of the first bearing 21, and the second positioning groove 12 is used for positioning the inner ring of the second bearing 22. When installed, the first bearing 21 may be mounted to the first detent 11 through the inlet end 101, and the second bearing 22 may be mounted to the second detent 12 through the outlet end 102.
Further, in order to conveniently locate the first bearing 21 and the second bearing 22 and improve the stability of operation, in this embodiment, the dynamic and static sealing joint 100 further includes a bearing outer ring axial positioning sleeve 50, the bearing outer ring axial positioning sleeve 50 is sleeved on the hollow shaft 10 (it can be understood that the bearing outer ring axial positioning sleeve 50 is sleeved on the hollow shaft), and is located between the first bearing 21 and the second bearing 22, and two axial ends of the bearing outer ring axial positioning sleeve 50 are respectively and fixedly connected with the outer ring of the first bearing 21 and the outer ring of the second bearing 22.
Further, the dynamic-static sealing joint 100 may further include a shaft sleeve fastening end cover 40, wherein the shaft sleeve fastening end cover 40 is sleeved on the hollow shaft 10 (i.e. the shaft sleeve fastening end cover 40 is sleeved outside the hollow shaft 10), and is installed on one side of the shaft sleeve 30 close to the air inlet end 101. The bearing 20 fastening end cap can fasten the shaft sleeve 30. Alternatively, the sleeve-fastening end cap 40 may be of the hex nut type for easy removal.
Further, in order to facilitate the installation of the shaft sleeve 30, in this embodiment, the hollow shaft 10 may further be provided with a third positioning slot 13, the third positioning slot 13 is located on a side of the first positioning slot 11 close to the air inlet 101 and is used for positioning the shaft sleeve 30, and specifically, the shaft sleeve fastening end cover 40 is sleeved on the third positioning slot 13. Therefore, the shaft sleeve 30 can be mounted to the third positioning groove 13 through the air inlet end 101, and meanwhile, the shaft sleeve fastening end cover 40 is also mounted to the third positioning groove 13, so that the whole compactness can be realized.
Further, in this embodiment, the dynamic and static sealing joint 100 further includes a base bolt 60, an end surface of one end of the base bolt 60 is fixedly connected with one end of the shaft sleeve 30 far away from the air inlet 101, and an end surface of the other end of the base bolt 60 is used for being fixedly connected with an air inlet pipe opening of the pneumatic clutch.
Preferably, in order to achieve better sealing, in the present embodiment, the dynamic-static sealing joint 100 further includes a spring 71, a back iron 72, an O-ring 73, and a dynamic sealing carbon ring 74 disposed in the base bolt 60.
The dynamic sealing carbon ring 74, the O-shaped sealing ring 73 and the sizing block 72 are sequentially arranged on the end face of one end of the hollow shaft 10 far away from the air inlet end 101; one end of the spring 71 is connected to the end of the back iron 72 remote from the hollow shaft 10, and the other end of the spring 71 is used to abut against the air inlet nozzle of the pneumatic clutch.
To facilitate the installation of the air inlet 101 and the air supply pipe, in the present embodiment, the air inlet 101 may be provided with a threaded portion 14 for connecting with the air supply pipe. Specifically, the threaded portion 14 may be disposed on an outer wall of the air inlet 101, i.e., an external thread. In other embodiments, the threaded portion 14 may be an internal thread provided on an inner wall of the air inlet end 101.
In summary, the working principle of the dynamic-static sealing joint 100 provided by the present embodiment includes:
during installation, the shaft sleeve 30 is fixed on a rotary air inlet pipe orifice of the pneumatic clutch through a base bolt 60, the air inlet end 101 of the hollow shaft 10 is in threaded connection with an air supply pipe, the shaft sleeve 30 and the hollow shaft 10 separately rotate through a bearing 20 (a first bearing 21 and a second bearing 22), an inner ring of the first bearing 21 and an inner ring of the second bearing 22 are fixed through a first positioning groove 11 and a second positioning groove 12 on the hollow shaft 10 respectively, and an outer ring of the first bearing 21 and an outer ring of the second bearing 22 are fixed through a bearing outer ring axial positioning sleeve 50.
The air outlet end 102 of the hollow shaft 10 is sealed with the dynamic sealing carbon ring 74 rotating with the shaft sleeve 30, and dynamic and static sealing with proper tightening force is formed by applying force through the spring 71 between the dynamic sealing carbon ring 74 and the shaft sleeve 30. One end of the spring 71 is provided with a sizing block 72 with a spigot limiting part, an O-shaped sealing ring 73 is arranged between the sizing block 72 and the movable sealing carbon ring 74, so that sealing is formed between the movable sealing carbon ring 74 and the shaft sleeve 30, the spring 71 generates pretightening force by pressing the shaft sleeve fastening end cover 40, and meanwhile, the O-shaped sealing ring 73 is tensioned. Because the dynamic sealing surface is smooth and the dynamic sealing carbon ring 74 is of a carbon structure, the sealing surface can keep smooth during operation, and the operation can be stable for a long time.
In operation, the air supply tube, the hollow shaft 10 mounted on the air supply tube, and the inner race of the bearing 20 fixedly secured to the hollow shaft 10 are secured together (not rotating). The shaft sleeve 30 rotates with the device, and at the same time, the shaft sleeve fastening end cover 40 fixed relative to the shaft sleeve 30, the outer ring of the bearing 20, the bearing outer ring axial positioning sleeve 50, the base bolt 60, the spring 71, the sizing block 72, the O-ring 73, the dynamic seal carbon ring 74 and the like all rotate with the rotation of the shaft sleeve 30. Compressed gas is output from the gas supply pipe, enters through the gas inlet end 101 of the hollow shaft 10, is finally output from the gas outlet end 102, passes through the base bolt 60, and enters the gas inlet pipe orifice of the pneumatic clutch.
The dynamic-static sealing joint 100 provided by the embodiment at least has the following advantages:
the shaft sleeve 30 is fixed on a pneumatic clutch shell and rotates along with the shell, the hollow shaft 10 is connected with an air supply pipe, and two bearings 20 are arranged between the shaft sleeve 30 and the hollow shaft 10 and rotate separately. The mechanical seal plays a role in preventing air leakage. The whole structure is optimized, the failure rate is low, the abrasion is controllable, the maintenance and the replacement are simple and convenient, and the installation is simple and convenient. Specifically, the shaft sleeve 30 is nested with the hollow shaft 10 to be used as a rotary joint, the spring 71 is used for sealing air, and the O-shaped sealing ring 73 is arranged at the static ring, so that the sealing reliability is high. Meanwhile, the whole wear surface is small, main wear is generated near the dynamic seal carbon ring 74, the sealing surface can keep smooth in operation, only the mechanical seal needs to be replaced after wear, the maintenance is simple and convenient, and the dismounting is simple and convenient. Each joint surface is designed, so that the reliability of the equipment is improved, the frequency of abrasion and air leakage is reduced, and the overall maintenance process is simple and convenient.
To sum up, the utility model provides a sound sealing joint 100 overall structure is comparatively simple, and operational reliability is high, and wearing and tearing are little between the sound joint, have reduced gas leakage probability and maintenance number of times. The pneumatic clutch with the dynamic and static sealing joint 100 has the advantages of small abrasion, strong sealing performance and long service life.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dynamic and static sealing joint is characterized by comprising a hollow shaft, a bearing and a shaft sleeve;
the hollow shaft is provided with an air inlet end used for being connected with an air supply pipe and an air outlet end used for being connected with an air inlet pipe orifice of the pneumatic clutch, and the inner ring of the bearing is fixedly sleeved on the outer wall of the hollow shaft close to the air outlet end; the fixed cover of axle sleeve is located the outer lane of bearing, just the axle sleeve with the hollow shaft rotates to be connected.
2. A hybrid dynamic-static seal joint according to claim 1 wherein the bearing comprises a first bearing and a second bearing, the first bearing and the second bearing being spaced apart.
3. A hybrid sealed joint according to claim 2, wherein said hollow shaft is provided with a first positioning groove for positioning the inner race of said first bearing and a second positioning groove for positioning the inner race of said second bearing.
4. The dynamic and static seal joint according to claim 2, characterized in that the dynamic and static seal joint further comprises a bearing outer ring axial positioning sleeve, the bearing outer ring axial positioning sleeve is sleeved outside the hollow shaft and is located between the first bearing and the second bearing, and two axial ends of the bearing outer ring axial positioning sleeve are respectively fixedly connected with the outer ring of the first bearing and the outer ring of the second bearing.
5. The dynamic and static sealing joint as recited in claim 3, further comprising a bushing fastening end cap, wherein said bushing fastening end cap is sleeved outside said hollow shaft and abuts against one side of said bushing near said air inlet end.
6. The dynamic-static seal joint according to claim 5, wherein said hollow shaft is provided with a third positioning groove located on a side of said first positioning groove near said air intake end for positioning said shaft sleeve.
7. The dynamic and static seal joint as recited in claim 1, further comprising a base bolt, wherein one end face of the base bolt is fixedly connected with one end of the shaft sleeve far away from the air inlet end, and the other end face of the base bolt is fixedly connected with an air inlet pipe orifice of the pneumatic clutch.
8. The dynamic-static sealing joint as recited in claim 7, further comprising a spring, a sizing block, an O-ring and a dynamic sealing carbon ring disposed in the base bolt;
the dynamic sealing carbon ring, the O-shaped sealing ring and the sizing block are sequentially arranged on the end face of one end of the hollow shaft, which is far away from the air inlet end; one end of the spring is connected with one end of the sizing block, which is far away from the hollow shaft, and the other end of the spring is used for abutting against an air inlet pipe orifice of the pneumatic clutch.
9. The dynamic-static seal joint as recited in claim 1 wherein the air inlet end is provided with a threaded portion for connection with an air supply pipe.
10. A pneumatic clutch comprising a dynamic and static seal joint according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383309.1U CN216009911U (en) | 2021-09-29 | 2021-09-29 | Dynamic and static sealing joint and pneumatic clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383309.1U CN216009911U (en) | 2021-09-29 | 2021-09-29 | Dynamic and static sealing joint and pneumatic clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216009911U true CN216009911U (en) | 2022-03-11 |
Family
ID=80584464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122383309.1U Active CN216009911U (en) | 2021-09-29 | 2021-09-29 | Dynamic and static sealing joint and pneumatic clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216009911U (en) |
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2021
- 2021-09-29 CN CN202122383309.1U patent/CN216009911U/en active Active
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