CN114151456A - Shaft sleeve connecting device and joint coupling - Google Patents
Shaft sleeve connecting device and joint coupling Download PDFInfo
- Publication number
- CN114151456A CN114151456A CN202111355903.8A CN202111355903A CN114151456A CN 114151456 A CN114151456 A CN 114151456A CN 202111355903 A CN202111355903 A CN 202111355903A CN 114151456 A CN114151456 A CN 114151456A
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- Prior art keywords
- shaft
- sleeve
- connecting shaft
- memory alloy
- arm
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- 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.)
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- 230000008878 coupling Effects 0.000 title claims abstract description 71
- 238000010168 coupling process Methods 0.000 title claims abstract description 71
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 71
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 47
- 238000003466 welding Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000002829 reductive effect Effects 0.000 abstract description 9
- 230000033001 locomotion Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000011664 nicotinic acid Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 210000000629 knee joint Anatomy 0.000 description 3
- 241000309551 Arthraxon hispidus Species 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
Abstract
The invention provides a shaft sleeve connecting device and a joint coupling, wherein the shaft sleeve connecting device comprises a first connecting shaft arranged along the radial direction of a shaft sleeve, a second connecting shaft arranged along the axial direction of the shaft sleeve and a connecting arm used for connecting the first connecting shaft and the second connecting shaft; the first connecting shaft is arranged in a first connecting sleeve at one end of the connecting arm, and a memory alloy is arranged between the first connecting shaft and the connecting arm in the first connecting sleeve; the second connecting shaft is arranged at the other end of the connecting arm. Through adopting in the connecting sleeve, set up memory alloy's structural design between connecting axle and the linking arm, make its memory alloy act as the elastic buffer part of connecting axle and linking arm, when receiving overload impact, only need heat the memory alloy after receiving the impact deformation, can make memory alloy resume original structural dimension, give whole axle sleeve connecting device automatic prosthetic ability, very big improvement its life to the fault rate of whole transmission equipment has been reduced.
Description
Technical Field
The invention relates to the technical field of transmission equipment, in particular to a shaft sleeve connecting device and a joint coupling
Background
The coupling is also called coupling, and is a mechanical part used for firmly connecting a driving shaft and a driven shaft in different mechanisms to rotate together and transmitting motion and torque; sometimes also to couple the shaft with other parts (e.g. gears, pulleys, etc.). Usually, the two halves are combined, and are fastened to the two shaft ends by a key or a tight fit, and the two halves are connected in some way. The coupling can compensate the offset (including axial offset, radial offset, angular offset or combined offset) between the two shafts due to manufacturing and installation inaccuracy, deformation or thermal expansion in operation, and the like, and can alleviate impact and absorb vibration.
The common coupler is divided into: the coupling comprises a quincunx coupling, an elastic column coupling, a spring coupling and a universal joint coupling, wherein the couplings are flexible couplings, and the coupling is characterized in that one part of the couplings is flexible and deformable; when connecting the two rotational axes, some misalignment of the two rotational axes is allowed, i.e. a dynamic deformable coupling. The use of flexible coupling can reduce the required precision of aiming at, the test of being convenient for to have good shock-absorbing function under the unstable condition of rotational speed, use comparatively extensively in the mechanical transmission trade. For example: chinese patent (CN106224399A) discloses a flexible coupling, which comprises a coupling body, wherein the coupling body is connected with a cover plate through a fixing member, an outer cover is fixedly arranged between the cover plate and the coupling body, two adjacent couplings are connected through the outer cover, and the length of the outer cover is greater than the distance between the two cover plates. Connect shaft coupling and apron through setting up the dustcoat to reach flexonics's purpose, because dustcoat length is greater than the interval between two laps, consequently make the cushioning effect of dustcoat better, prevent the wearing and tearing between apron and the shaft coupling body, thereby reached increase of service life's effect.
Rigid couplings are also used in special operating conditions, and as the name suggests, are actually torsional rigid couplings. Even under load, there is no turning clearance. The rigid coupling is still rigid to transmit torque even if there are load-producing deflections. The rigid coupling is required to be used for connecting two shafts in a strict alignment mode without relative dislocation, and the installation and use requirements are strict. For example: chinese patent (CN211371067U) discloses a rigid coupling with high strength, which comprises a coupling structure and a connecting and fixing structure, wherein the arrangement of a driven chain, a driving chain wheel and a driven chain wheel realizes the flexible transmission of the rigid coupling, the non-concentricity of a driving shaft and a driven shaft can be buffered, thereby reducing the adverse effect caused by the non-concentricity, the arrangement of a dynamic balance hole can eliminate the shaking of the rigid coupling during high-speed rotation, the stability of transmission is improved, the arrangement of a shared chain shaft and a fastening screw can achieve the axial free movement of one shaft or the separation from the other shaft under the condition of not assembling and disassembling any fastening piece, the stability of the connection between the shafts is increased, the quality of the connection is improved, an anticorrosive layer is arranged at the inner side of a wear-resistant layer, a reinforcing layer is arranged at the inner side of the anticorrosive layer, and a shock-absorbing layer is arranged at the inner side of the reinforcing layer, thereby preventing the rigid coupling from being damaged in the long-term use process, the service life of the rigid coupling is prolonged.
However, conventional couplings, whether flexible or rigid, present performance shortboards, such as: although the flexible coupling can effectively reduce the requirement on the centering precision of two shafts, the bearing capacity of the flexible coupling is limited due to the inherent material characteristics of the elastic part, the elastic part is locally firstly damaged due to uneven loading caused by structural reasons when the elastic part transmits torque, particularly under the working conditions of large change of rotating speed and transmission torque, the service life of the elastic coupling is less than 70% of the design service life, once the elastic part damages the whole transmission system, abnormal vibration is easy to occur, the initial amplitude of the abnormal vibration is not large and is difficult to be detected by equipment, if the micro vibration caused by the damage of the elastic part resonates with a certain working frequency of the equipment, the vibration of the equipment under a certain working condition exceeds the design allowable threshold value, the whole equipment is damaged, the root cause of failure is difficult to be found during the subsequent failure troubleshooting, and the bearing damage is often caused by misjudgment, the equipment is damaged again shortly after the bearing is replaced and the cycle is repeated until the elastomer damage is propagated to an observable level. Although the rigid coupling can be used under the above-mentioned working conditions, the requirement on the centering precision of the two shafts of the driven equipment is extremely high, and the difficulty is caused in the installation of special environment equipment, such as the high-altitude operation of wind power equipment, narrow space, large centering operation under the influence of external environments such as weather and the like, and the difficulty of the centering operation. Therefore, under the working conditions that the fluctuation of rotating speed and torque is large and the centering precision of the linked double shafts is low, the traditional coupling structure cannot meet the use requirement.
Therefore, there is a need to provide a bionic joint structure similar to a human joint to solve the above technical problems.
Disclosure of Invention
The invention aims to solve the technical problems and provides a shaft sleeve connecting device and a joint coupling which are long in service life, good in buffering effect and low in transmission failure rate.
In order to achieve the purpose, the invention provides the following scheme: the shaft sleeve connecting device comprises a first connecting shaft arranged along the radial direction of a shaft sleeve, a second connecting shaft arranged along the axial direction of the shaft sleeve and a connecting arm used for connecting the first connecting shaft and the second connecting shaft; the first connecting shaft is arranged in a first connecting sleeve at one end of the connecting arm, and a memory alloy is arranged between the first connecting shaft and the connecting arm in the first connecting sleeve; the second connecting shaft is arranged at the other end of the connecting arm.
Preferably, the first connecting shaft and the second connecting shaft are arranged in an L shape with the connecting arm.
Preferably, the contact surface of the first connecting shaft and the memory alloy is of a convex cambered surface structure.
Preferably, the opening of the first connecting sleeve is in a closed shape.
Preferably, the other end of the connecting arm is provided with a second connecting sleeve, and the second connecting shaft is arranged in the second connecting sleeve; and a memory alloy is arranged between the second connecting shaft and the connecting arm in the second connecting sleeve.
Preferably, the contact surface of the second connecting shaft and the memory alloy is of a convex cambered surface structure.
Preferably, the opening of the second connecting sleeve is in a closed shape.
The joint coupling comprises a flange and a shaft sleeve arranged on the flange, wherein the shaft sleeve is connected with the flange through the shaft sleeve connecting device; the first connecting shaft is fixed on the outer wall of the shaft sleeve, and the second connecting shaft is fixed on the flange; the shaft sleeve connecting devices are at least two and are arranged at equal intervals along the circumferential direction of the shaft sleeve.
Preferably, the first connecting shaft is connected with the outer wall of the shaft sleeve by screw thread, bolt connection or welding.
Preferably, the second connecting shaft and the flange are connected by threads, bolts or welding.
Compared with the prior art, the invention has the following technical effects:
(1) the invention adopts the structural design that the memory alloy is arranged between the connecting shaft and the connecting arm in the connecting sleeve, so that the memory alloy is used as the elastic buffering part of the connecting shaft and the connecting arm, when the connecting sleeve is impacted by overload, the memory alloy after being impacted and deformed can be restored to the original structural size by heating, the whole shaft sleeve connecting device is endowed with the automatic repairing capability, the service life of the connecting sleeve connecting device is greatly prolonged, and the fault rate of the whole transmission device is reduced.
(2) According to the invention, by adopting the design that the contact surface of the connecting shaft and the memory alloy is of a convex cambered surface structure, the bionic principle of the knee joint is utilized, on one hand, the connecting shaft can be smoothly combined with the memory alloy, like the matching of a biological joint head and a joint socket, and as the combining surface is of a spherical concave-convex surface matching structure, a lubricant is enclosed between the connecting shaft and the memory alloy, so that the friction force is reduced during relative motion, and meanwhile, the pollution of the external environment to the combining surface and the lubricant is reduced to the minimum, and the generated relative motion is smoother; on the other hand, when the connecting shaft is extruded with the memory alloy, the extrusion force born by the memory alloy is more dispersed rather than concentrated at a certain point, and the memory alloy is prevented from being irreversibly broken when being extruded.
(3) The shaft sleeve and the flange in the joint coupling are connected by the shaft sleeve connecting devices, so that the requirements of different working conditions can be met by increasing or decreasing the arrangement number of the shaft sleeve connecting devices, the joint coupling does not need to be customized again, and the applicability of the joint coupling is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic perspective view of a bushing connection device according to the present invention;
FIG. 2 is a plan sectional view of the shaft sleeve coupling device of the present invention;
FIG. 3 is a schematic perspective view of the joint coupling of the present invention;
FIG. 4 is a front view of the knuckle coupling of the present invention;
fig. 5 is a side view of the inventive articulating coupling.
The device comprises a shaft sleeve connecting device 1, a first connecting shaft 11, a second connecting shaft 12, a connecting arm 13, a first connecting sleeve 131, a second connecting sleeve 132 and a memory alloy 14, wherein the first connecting sleeve is connected with the second connecting sleeve through a connecting rod; 2-shaft sleeve; 3-a flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a shaft sleeve connecting device and a joint coupling which are long in service life, good in buffering effect and low in transmission failure rate.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 and 2, the present invention provides a bushing connecting device 1, which includes a first connecting shaft 11, a second connecting shaft 12, and a connecting arm 13; wherein, the first connecting shaft 11 is arranged along the radial direction of the shaft sleeve 3, the second connecting shaft 12 is arranged along the axial direction of the shaft sleeve 3, and the connecting arm 13 is used for connecting the first connecting shaft 11 and the second connecting shaft 12; further, a first connecting sleeve 131 is disposed at one end of the connecting arm 13, the first connecting sleeve 131 is sleeved on the first connecting shaft 11, and a memory alloy 14 is disposed inside the first connecting sleeve 131 and between the outer wall of the first connecting shaft 11 and the connecting arm 13. The memory alloy 14 serves as an elastic buffering part of the first connecting shaft 11 and the connecting arm 13, when the whole transmission device is impacted by overload, the memory alloy 14 clamped between the first connecting shaft 11 and the connecting arm 13 firstly deforms, at the moment, the memory alloy 14 deformed by the impact can be restored to the original structural size by only heating the memory alloy 14, the whole shaft sleeve connecting device 1 is endowed with the automatic repairing capacity, the service life of the device is greatly prolonged, and the fault rate of the whole transmission device is reduced.
Further, the first connecting shaft 11 and the second connecting shaft 12 are arranged in an L shape with the connecting arm 13; it is to be noted here that the L-shaped arrangements are not limited to being arranged perpendicular to each other, but rather allow for some angular deviation thereof; this design is designed to cope with the working conditions under different working conditions, for example: when the shaft sleeve 1 is a square shaft sleeve, the first connecting shaft 11 and the second connecting shaft 12 can be arranged in a mode of being perpendicular to the connecting arm 13 because the outer wall connecting surface of the square shaft sleeve is flat; when the shaft sleeve 1 is a circular shaft sleeve, since the connection is most stable in a direction perpendicular to a tangent line when the connection is performed on the outer wall of the circular shaft sleeve, in order to satisfy the most stable connection condition, a certain deviation of the L-shaped arrangement angles between the first connecting shaft 11 and the connecting arms 13 and between the second connecting shaft 12 and the connecting arms 13 can be allowed.
Further, the contact surface of the first connecting shaft 11 and the memory alloy 14 is a convex arc surface structure, and it is more preferable that the contact surface of the first connecting shaft 11 and the memory alloy 14 is a spherical surface structure. According to the design, the bionic principle of the knee joint is referred, so that on one hand, the first connecting shaft 11 can be smoothly combined with the memory alloy 14, like the matching of a biological joint head and a joint socket, and as the combining surface is of a spherical concave-convex surface matching structure, the lubricant is enclosed between the first connecting shaft 11 and the memory alloy 14, the friction force is reduced during relative motion, and meanwhile, the pollution of the external environment to the combining surface and the lubricant is reduced to the minimum, so that the generated relative motion is smoother; on the other hand, when the first connecting shaft 11 is pressed against the memory alloy 14, the pressing force applied to the memory alloy 14 is more dispersed rather than concentrated at a certain point, so as to avoid irreversible fracture of the memory alloy 14 when being pressed.
Further, the opening of the first connecting sleeve 11 is in a closed-up design; this makes it possible to tightly wrap the memory alloy 14 inside the first coupling sleeve 11, and further, when an impact is applied, the impact load is uniformly dispersed by the memory alloy 14 inside the first coupling sleeve 11.
Further, the other end of the connecting arm 13 is provided with a second connecting sleeve 132, and the second connecting shaft 12 is installed in the second connecting sleeve 132; a memory alloy 14 is arranged between the second connecting shaft 12 and the connecting arm 13 in the second connecting sleeve 132. This design is similar to the design principle of the first coupling sleeve 131 and the first coupling shaft 11, and the memory alloy 14 is interposed between the first coupling shaft 11 and the coupling arm 13, so that the damping capacity of the bushing coupling device 1 is further improved.
It should be noted that the arrangement of the sleeve connecting device 1 for the memory alloy 14 is not limited to between the first connecting shaft 11 and the first connecting sleeve 131, or between the first connecting shaft 11 and the first connecting sleeve 131, the second connecting shaft 12 and the second connecting sleeve 132 at the same time, but may exist only between the second connecting shaft 12 and the second connecting sleeve 132; the three conditions can be flexibly selected according to actual working requirements.
Furthermore, the contact surface between the second connecting shaft 12 and the memory alloy 14 is also a convex arc surface structure, and the opening of the second connecting sleeve 132 is also closed.
As shown in fig. 3 to 5, the present invention further provides a joint coupling, comprising a flange 2 and a sleeve 3 mounted on the flange 2, wherein the sleeve 3 is connected with the flange 2 by the above-mentioned sleeve connecting device 1; the first connecting shaft 11 is fixed on the outer wall of the shaft sleeve 3, the second connecting shaft 12 is fixed on the flange 2, the first connecting shaft 11 can also be fixed on the outer wall of the flange 2, and the second connecting shaft 12 is fixed on the shaft sleeve 3; the bushing connecting devices 1 are at least two and are arranged at equal intervals along the circumference of the bushing 3, and five bushing connecting devices 1 are taken as illustration.
Further, the first connecting shaft 11 and the second connecting shaft 12 are preferably connected with the flange 2 or the sleeve 3 by a screw connection, a bolt connection, a welding connection or the like.
When the whole system is subjected to overload impact, the first deformation of the joint coupling is the memory alloy 14 clamped between the first connecting shaft 11 and the connecting arm 13, and the appearance of the whole system is as follows: abnormal vibration noise points periodically appear on the equipment, at the moment, the vibration detection mechanism starts heating equipment arranged beside the joint coupling, the heating equipment blows hot air into the shaft sleeve connecting device 1, the memory alloy 14 deformed due to overload impact can be restored to the original size when leaving the factory after being heated by the hot air, and the heating of the shaft sleeve connecting device 1 can be stopped after the vibration detection equipment detects that the abnormal vibration noise points disappear; therefore, the whole system can be automatically repaired in a working state, and the failure rate of the transmission equipment is greatly reduced.
Meanwhile, the memory alloy 14 can absorb vibration, so that the connecting shaft of the bionic knee joint wrapped by the memory alloy 14 can flexibly compensate angle deviation; because the memory alloy 14 is tightly wrapped by the connecting sleeve on the connecting arm 13, and the design of the convex cambered surface of the outer wall of the connecting shaft is adopted, the impact load can be uniformly dispersed all around, and the memory alloy cannot be torn or damaged irreversibly due to overlarge pressure at a certain point.
In addition, the requirements of different working conditions can be met by increasing or decreasing the arrangement number of the shaft sleeve connecting devices 1, and the new customization is not needed.
Therefore, the joint coupling provided by the invention is suitable for unattended equipment, such as: wind turbine generator sets, field industrial and mining operations and other scenes with complicated external working conditions are badly influenced by the environment, the equipment maintenance pressure can be greatly reduced, the equipment reliability is improved, and the service life of the equipment is prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A shaft sleeve connecting device is characterized in that: the connecting device comprises a first connecting shaft arranged along the radial direction of a shaft sleeve, a second connecting shaft arranged along the axial direction of the shaft sleeve and a connecting arm used for connecting the first connecting shaft and the second connecting shaft; the first connecting shaft is arranged in a first connecting sleeve at one end of the connecting arm, and a memory alloy is arranged between the first connecting shaft and the connecting arm in the first connecting sleeve; the second connecting shaft is arranged at the other end of the connecting arm.
2. The bushing coupling device according to claim 1, wherein: the first connecting shaft and the second connecting shaft are arranged in an L shape with the connecting arms.
3. The bushing coupling device according to claim 2, wherein: the contact surface of the first connecting shaft and the memory alloy is of a convex cambered surface structure.
4. The bushing coupling device according to claim 1, wherein: the opening of the first connecting sleeve is in a closing-up shape.
5. The bushing coupling device according to claim 2, wherein: the other end of the connecting arm is provided with a second connecting sleeve, and a second connecting shaft is arranged in the second connecting sleeve; and the memory alloy is arranged between the second connecting shaft and the connecting arm in the second connecting sleeve.
6. The bushing coupling device according to claim 5, wherein: the contact surface of the second connecting shaft and the memory alloy is of a convex cambered surface structure.
7. The bushing coupling device according to claim 5, wherein: the opening of the second connecting sleeve is in a closed-up shape.
8. An articulated coupling, characterized by: comprising a flange and a sleeve mounted on the flange, the sleeve being connected to the flange by a sleeve connection device according to any one of claims 1 to 7; the first connecting shaft is fixed on the outer wall of the shaft sleeve, and the second connecting shaft is fixed on the flange; the shaft sleeve connecting devices are at least two and are arranged at equal intervals along the circumferential direction of the shaft sleeve.
9. The joint coupling of claim 8, wherein: the first connecting shaft is in threaded connection, bolted connection or welded with the outer wall of the shaft sleeve.
10. The joint coupling of claim 8, wherein: the second connecting shaft and the flange are connected through threads, bolts or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355903.8A CN114151456A (en) | 2021-11-16 | 2021-11-16 | Shaft sleeve connecting device and joint coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355903.8A CN114151456A (en) | 2021-11-16 | 2021-11-16 | Shaft sleeve connecting device and joint coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114151456A true CN114151456A (en) | 2022-03-08 |
Family
ID=80456482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111355903.8A Pending CN114151456A (en) | 2021-11-16 | 2021-11-16 | Shaft sleeve connecting device and joint coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114151456A (en) |
-
2021
- 2021-11-16 CN CN202111355903.8A patent/CN114151456A/en active Pending
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