CN220890853U - Coupling device for shaft connection - Google Patents
Coupling device for shaft connection Download PDFInfo
- Publication number
- CN220890853U CN220890853U CN202322904372.4U CN202322904372U CN220890853U CN 220890853 U CN220890853 U CN 220890853U CN 202322904372 U CN202322904372 U CN 202322904372U CN 220890853 U CN220890853 U CN 220890853U
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- sleeve
- connecting sleeve
- coupling device
- shaft
- split
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- 230000008878 coupling Effects 0.000 title claims abstract description 41
- 238000010168 coupling process Methods 0.000 title claims abstract description 41
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 41
- 239000000872 buffer Substances 0.000 claims abstract description 17
- 230000000670 limiting effect Effects 0.000 claims description 13
- 230000003139 buffering effect Effects 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The application proposes a coupling device for shaft connection, comprising: an outer connecting sleeve, an inner connecting sleeve and a buffer member. The inner side wall of the outer connecting sleeve is provided with a plurality of identical first through grooves, and each first through groove penetrates through openings at two ends of the outer connecting sleeve; the inner connecting sleeve comprises a shaft sleeve and a circle of splicing sleeve fixed on the outer circumferential surface of the shaft sleeve, a plurality of second through grooves matched with the first through grooves are formed in the outer side wall of the splicing sleeve, and each first through groove and one second through groove are spliced to form a complete splicing channel; the inner wall of the shaft sleeve is provided with at least one groove or protrusion which is parallel to the shaft diameter and penetrates through the two ends of the shaft sleeve, and the inner connecting sleeve is nested in the outer connecting sleeve; and the buffer piece is filled in the splicing channel and limits and buffers the relative rotation of the inner connecting sleeve and the outer connecting sleeve. The split channels are formed by split through the through grooves which can be split between the inner connecting sleeve and the outer connecting sleeve, and the buffer parts are filled in the split channels, so that the shearing stress of the coupling device on the fixed key in the rotating process is reduced.
Description
Technical Field
The application relates to the technical field of mechanical assembly, in particular to a coupling device for shaft connection.
Background
The coupling device is a mechanical component for firmly connecting a driving shaft and a driven shaft in different mechanisms to rotate together and transmitting motion and torque. The coupling device is respectively connected with the driving shaft and the driven shaft, and is respectively connected with the two shaft ends in a tight fit manner by means of keys or pins and the like. In the high-speed heavy-load power transmission, as the moment of a driving shaft is very large during starting, in a coupling device in a key or pin mode, the shearing stress acting on a clamping key or a clamping pin for fastening two shafts and a connecting device is easily excessive due to excessive instantaneous moment of torque, so that the clamping key or the clamping pin is damaged, and the two shafts cannot be synchronously connected through the coupling device; the moment required by the stable operation of the two shafts is relatively smaller, so that the coupling device has the functions of buffering, damping, improving the dynamic performance of the shaft system and the like, otherwise, the service life of the coupling device is short and the use effect is poor.
Disclosure of utility model
The application mainly aims to provide a shaft coupling device for shaft connection, and aims to solve the technical problem that the prior connecting device is difficult to counteract or buffer shearing stress acted on a key or a pin for fixing, so that the using effect of the connecting device is poor.
To achieve the above object, the present application proposes a coupling device for shaft connection, the coupling device comprising: the inner side wall of the outer connecting sleeve is provided with a plurality of identical first through grooves, and each first through groove penetrates through openings at two ends of the outer connecting sleeve; the inner connecting sleeve comprises a shaft sleeve and a circle of splicing sleeve fixed on the outer circumferential surface of the shaft sleeve, a plurality of second through grooves matched with the first through grooves are formed in the outer side wall of the splicing sleeve, and each first through groove and one second through groove are spliced to form a complete splicing channel; at least one groove or protrusion which is parallel to the shaft diameter and penetrates through two ends of the shaft sleeve is arranged on the inner wall of the shaft sleeve so that two connected shafts are relatively fixed, and the inner connecting sleeve is nested in the outer connecting sleeve; and the buffer piece is filled in the split channel and used for limiting and buffering the relative rotation of the inner connecting sleeve and the outer connecting sleeve.
Optionally, a plurality of first through grooves are formed in the inner side wall of the outer connecting sleeve at the same preset interval.
Optionally, the shaft sleeve comprises a first shaft sleeve and a second shaft sleeve, the split sleeve comprises a first split sleeve and a second split sleeve, the first split sleeve is fixedly arranged at one end of the first shaft sleeve, and the second split sleeve is fixedly arranged at one end of the second shaft sleeve.
Optionally, each first through groove is parallel to the axial direction of the outer connecting sleeve.
Optionally, the plurality of first through grooves are parallel to each other and spirally distributed with the shaft diameter of the outer connecting sleeve as the center.
Optionally, the coupling device further includes a limiting stopper, where the limiting stoppers are respectively disposed at two ends of the outer connecting sleeve, and are used to limit the split sleeve from falling out from two ends of the outer connecting sleeve when the inner connecting sleeve is nested in the outer connecting sleeve.
Optionally, the limiting baffle is a retainer ring, the outer diameter of the retainer ring is the same as the maximum outer diameter of the outer connecting sleeve, and the inner diameter of the retainer ring is the same as the outer diameter of the shaft sleeve.
Optionally, screw holes corresponding to each other are formed in the two ends of the outer connecting sleeve and the check rings, and each check ring is fixed to the two ends of the outer connecting sleeve through screws.
Optionally, each groove and each protrusion are respectively arranged on the inner wall of the shaft sleeve corresponding to the gap positions of two adjacent first through grooves.
Optionally, the buffer member is a nylon rod.
According to the coupling device in the embodiment of the application, the shaft sleeve is additionally arranged in the space between the outer side wall of the inner connecting sleeve and the inner side wall of the outer connecting sleeve and forms a splicing channel with the structure of the inner side wall of the outer connecting sleeve mainly in a nesting mode between the inner connecting sleeve and the outer connecting sleeve, and the buffer piece is filled into the splicing channel by means of the space and the direction characteristics of the splicing channel, so that the shearing stress acting on the tight-fit connecting piece is counteracted and buffered when the coupling device rotates, and the structural stability of the coupling device is improved and the use effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration showing the disassembly of one embodiment of the coupling apparatus of the present application;
FIG. 2 is a schematic exploded view of one embodiment of a coupling device of the present application;
FIG. 3 is a side view of one embodiment of a coupling device of the present application;
Reference numerals:
10. an outer connecting sleeve; 11. a first through groove; 20. an inner connecting sleeve; 21. a shaft sleeve; 211. a first sleeve; 212. a second sleeve; 22. a split sleeve; 221. a first split sleeve; 222. a second split sleeve; 23. a second through slot; 24. a groove; 30. a buffer member; 40. a limit stop;
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
An embodiment of the coupling device of the present application is shown in fig. 1, which connects two shafts by means of a key, pin or tight fit, and can be used in common torque transmission applications. The coupling device comprises: an outer connecting sleeve 10, an inner connecting sleeve 20 and a buffer 30. The inner side wall of the outer connecting sleeve 10 is provided with a plurality of identical first through grooves 11, and each first through groove 11 penetrates through two ends of the outer connecting sleeve 10 to be opened; the inner connecting sleeve 20 comprises a shaft sleeve 21 and a circle of splicing sleeve 22 fixed on the outer circumferential surface of the shaft sleeve 21, a plurality of second through grooves 23 matched with the first through grooves 11 are formed in the outer side wall of the splicing sleeve 22, and each first through groove 11 and one second through groove 23 are spliced to form a complete splicing channel; at least one groove 24 or protrusion (not shown) which is parallel to the shaft diameter and penetrates through two ends of the shaft sleeve 21 is arranged on the inner wall of the shaft sleeve 21 so as to enable the two connected shafts to be relatively fixed, and the inner connecting sleeve 20 is nested in the outer connecting sleeve 10; and a buffer member 30 filled in the split passage and used for limiting and buffering the relative rotation of the inner and outer connecting sleeves 20 and 10.
In this embodiment, the shaft sleeve 21 of the inner connecting sleeve 20 has openings at both ends and is hollow inside, and the opening at each end is connected to one end of one shaft, specifically: the inner wall of the shaft sleeve 21 is provided with a cuboid groove 24 penetrating through openings at two ends, on two shafts to be connected, the circumferential side surfaces of the shaft ends are provided with grooves 24, when the shaft ends of the two shafts are inserted into the hollow part of the shaft sleeve 21 and the direction is adjusted, the grooves 24 of the shaft ends are matched with the grooves 24 of the inner wall of the shaft sleeve 21 to form a cavity, and connecting pieces such as keys or pins are used for filling the cavity, so that the two shafts to be connected and the shaft sleeve 21 are fastened and relatively fixed, and the two shafts are enabled to move at the same rotating speed and torque through the connection of the shaft sleeve 21. More particularly, in the tight-fit connection mode through the key or the pin, the two shafts rotate to generate shearing stress acting on the key or the pin connector along the tangential direction of the rotation direction, and in the use process, the counteracting or buffering of the partial force should be considered to strengthen the structural stability of the connection device, so in the embodiment, the split sleeve 22 is further added on the shaft sleeve 21, the connection mode of the split sleeve 22 and the shaft sleeve 21 can be an integral forming or clamping mode, and a space for limiting the relative rotation of the inner connection sleeve 20 and the outer connection sleeve 10, namely a plurality of split channels, is formed between the outer side wall of the split sleeve 22 and the inner side wall of the outer connection sleeve 10. Specifically, the two ends of the split passage penetrate the two ends of the outer connecting sleeve 10 according to the structure of the first through groove 11, and the direction thereof is at least different from the rotation direction of the shaft, thereby generating a restriction of the relative rotation between the inner connecting sleeve 20 and the outer connecting sleeve 10 in such a manner that the buffer member 30 is filled into the split passage. Specifically, the cushioning member 30 is made of nylon material, which has the characteristics of better fatigue strength, low cost, long service life and the like compared with hard connection materials such as alloy, and can play a better role in cushioning.
The structure of the buffer member 30 depends on the shape of the split channel, and this is not specifically shown or limited in this embodiment, and may be a cylindrical structure determined by a cylindrical split channel formed by two semicircular through grooves as shown in fig. 1, or may be a structure determined by a split channel of another shape structure and matched with the split channel.
The coupling device in this embodiment mainly adopts a nesting mode between the inner connecting sleeve 20 and the outer connecting sleeve 10, a shaft sleeve 21 is additionally arranged in a space between the outer side wall of the inner connecting sleeve 20 and the inner side wall of the outer connecting sleeve 10, and a splicing channel is formed with the structure of the inner side wall of the outer connecting sleeve 10, and by means of the space and the directional characteristic of the splicing channel, a buffer member 30 is filled in the splicing channel, and when the coupling device rotates, shearing stress acting on a tight fit connecting member is counteracted and buffered, so that the structural stability of the coupling device is improved, and the use effect is improved.
As an embodiment, on the basis of the foregoing embodiment, a plurality of first through grooves 11 are formed on the inner side wall of the outer connecting sleeve 10 at the same preset interval.
In this embodiment, the first through grooves 11 disposed on the inner sidewall of the outer connecting sleeve 10 are disposed at the same preset interval, so as to form an annular array distribution manner of the first through grooves 11 on the inner sidewall of the outer connecting sleeve 10 with the axis of the outer connecting sleeve 10 as the center, and correspondingly, the second through grooves 23 and the formed split passages are also disposed between the inner connecting sleeve 20 and the outer connecting sleeve 10 in an annular array manner.
In this embodiment, a plurality of first through grooves 11 and second through grooves 23 are uniformly formed on the inner side wall of the outer connecting sleeve 10 and form corresponding splicing passages, so that the limiting effect between the inner connecting sleeve 20 and the outer connecting sleeve 10 is better, the circumferential shear stress range for counteracting and buffering is also larger, and the use effect of the coupling device is further improved.
As an embodiment, referring to fig. 2, on the basis of the foregoing embodiment, the sleeve 21 includes a first sleeve 211 and a second sleeve 212, the split sleeve 22 includes a first split sleeve 221 and a second split sleeve 222, the first split sleeve 221 is fixedly disposed at one end of the first sleeve 211, and the second split sleeve 222 is fixedly disposed at one end of the second sleeve 212.
In the foregoing embodiment, the sleeve 21 of the inner joint sleeve 20 is integrated with the split sleeve 22, and it is inconvenient to install or remove the sleeve integrally during the assembling and disassembling process. In this embodiment, the same effect as in the previous embodiment is achieved by dividing the sleeve 21 and the split sleeve 22 into two parts, namely, the first sleeve 211 and the second sleeve 212, and the first split sleeve 221 and the second split sleeve 222, which are mutually matched to form an integral inner connecting sleeve 20, but unlike in the previous embodiment, the inner connecting sleeve 20 is divided into two parts, so that the assembly efficiency can be greatly improved in the assembly and disassembly process, for example, when the connecting shaft is disassembled or replaced, only the first sleeve 211 or the second sleeve 212 is disassembled, and the inner connecting sleeve is connected with other connecting shafts again by corresponding matched specifications, so that the time cost is greatly reduced in the replacement and adaptation process of the driving shaft.
As an embodiment, on the basis of the previous embodiment, referring to fig. 2, each first through groove 11 is parallel to the axial direction of the outer connecting sleeve 10.
In this embodiment, the radial direction of the first through groove 11 is parallel to the axial direction of the outer connecting sleeve 10, that is, the direction of the first through groove 11 (or the splicing channel) is perpendicular to the rotation direction of the connecting device, the stress is not easy to be decomposed, the splicing channel and the buffer member 30 are centralized and uniform, the matched use is favorable for the overall structural stability of the coupling device,
As an embodiment, in addition to the foregoing embodiment, a plurality of first through grooves 11 are parallel to each other and are spirally distributed around the axial diameter of the outer connecting sleeve 10.
The present embodiment is described as an alternative embodiment to the previous embodiment, in which the first through grooves 11 (or split passages) are still parallel to each other, but are spirally distributed on the inner side wall of the outer joint sleeve 10, as compared with the previous embodiment. In the process of starting or decelerating and stopping the driving shaft to drive the driven shaft to rotate, the instantaneous rotating speed and torque of the driving shaft are larger than those of the driven shaft, the shearing stress acting on the tight fit connecting piece in the connecting device is not equal everywhere, but the part which is closer to the driving shaft is larger, the problem of uneven shearing stress caused by the driving torque can be compensated through the design of the first through grooves 11 (or the splicing channels) which are distributed in a spiral mode, the first through grooves 11 (or the splicing channels) are parallel to each other, the stability of the whole structure of the connecting device is not damaged, and meanwhile, the completion degree of the connecting device is improved by combining with specific application scenes, so that the service life is prolonged.
As an embodiment, on the basis of the foregoing embodiment, the coupling device further includes limiting stoppers 40, where the limiting stoppers 40 are respectively disposed at two ends of the outer connecting sleeve 10, and are used to limit the split sleeve 22 from being separated from two ends of the outer connecting sleeve 10 when the inner connecting sleeve 20 is nested in the outer connecting sleeve 10.
Further, the limiting stopper 40 is a retainer ring, the outer diameter of the retainer ring is the same as the maximum outer diameter of the outer connecting sleeve 10, and the inner diameter of the retainer ring is the same as the outer diameter of the shaft sleeve 21.
The connecting device is mainly used in a nested matching mode of the inner connecting sleeve 20 and the outer connecting sleeve 10, and in a corresponding rotating working environment, the nested matching inner connecting sleeve 20 is easy to separate from the outer connecting sleeve 10 or misplacement, so that shearing stress in the circumferential direction is counteracted and buffered to reduce or even lose effectiveness, and therefore limiting blocking pieces 40 are arranged on openings at two ends of the outer connecting sleeve 10, and separation of the split sleeve 22 embedded in the outer connecting sleeve 10 is prevented. Taking the further explanation of the above embodiment as an example, the stop member 40 is a ring-shaped stop member when the coupling device is implemented, and the outer diameter and the inner diameter of the stop member are correspondingly associated with the outer connecting sleeve 10 and the shaft sleeve 21, so that the stop position of the stop member matches with the split passage, and the stop member can limit the release of the inner connecting sleeve 20 and also block the release of the buffer member 30 from the openings at both ends.
Furthermore, on the basis of the foregoing embodiment, screw holes corresponding to each other are formed in the two ends of the outer connecting sleeve 10 and the retaining rings, and each retaining ring is fixed to the two ends of the outer connecting sleeve 10 by screws.
In order to facilitate assembly and disassembly, screw holes are formed in the retainer ring and the outer connecting sleeve 10, and the retainer ring is fixed by screws, so that the cost is low and the fixation is good.
As an embodiment, on the basis of the foregoing embodiment, each groove 24 and each projection are provided on the inner wall of the boss 21 corresponding to the gap position of two adjacent first through grooves 11, respectively.
This embodiment is further improved mainly to counteract or cushion the effect of shear stress, as shown in the left diagram of fig. 3, if the positional relationship between the tight fit connector and the split channel is vertically aligned, the split channel and the cushion 30 therein will be subjected to the same compressive stress of the same magnitude and opposite direction in order to balance the shear stress on the circumference; in comparison, in the right diagram, the two adjacent splicing channels and the close-fit connecting pieces are arranged in a staggered mode (a plurality of close-fit connecting pieces are arranged), the shearing stress acting on the close-fit connecting pieces is balanced by the resultant force of the extrusion stress on the adjacent splicing channels on two sides of the corresponding gap positions of the close-fit connecting pieces, the stress distribution of each splicing channel is balanced, the splicing channels are favorable for bearing larger stress, and correspondingly, the connecting device can be suitable for more high-speed rotation connection scenes.
The foregoing description is only of the optional embodiments of the present application, and is not intended to limit the scope of the application, and all the equivalent structural changes made by the description of the present application and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the application.
Claims (10)
1. A coupling device for shaft connection, the coupling device comprising:
The inner side wall of the outer connecting sleeve is provided with a plurality of identical first through grooves, and each first through groove penetrates through openings at two ends of the outer connecting sleeve;
The inner connecting sleeve comprises a shaft sleeve and a circle of splicing sleeve fixed on the outer circumferential surface of the shaft sleeve, a plurality of second through grooves matched with the first through grooves are formed in the outer side wall of the splicing sleeve, and each first through groove and one second through groove are spliced to form a complete splicing channel; at least one groove or protrusion which is parallel to the shaft diameter and penetrates through two ends of the shaft sleeve is arranged on the inner wall of the shaft sleeve so that two connected shafts are relatively fixed, and the inner connecting sleeve is nested in the outer connecting sleeve;
And the buffer piece is filled in the split channel and is used for limiting and buffering the relative rotation of the inner connecting sleeve and the outer connecting sleeve.
2. The coupling device according to claim 1, wherein a plurality of the first through grooves are formed in the inner side wall of the outer connecting sleeve at the same predetermined interval.
3. The coupling device of claim 1, wherein the sleeve comprises a first sleeve and a second sleeve, the split sleeve comprises a first split sleeve and a second split sleeve, the first split sleeve is fixedly disposed at one end of the first sleeve, and the second split sleeve is fixedly disposed at one end of the second sleeve.
4. A coupling device according to claim 1, wherein each of said first through slots is parallel to the axial direction of said outer connection sleeve.
5. The coupling device according to claim 1, wherein a plurality of the first through grooves are parallel to each other and spirally distributed with the shaft diameter of the outer connecting sleeve as a center.
6. The coupling device of claim 1, further comprising stop members disposed at each end of the outer sleeve for limiting the split sleeve from exiting each end of the outer sleeve when the inner sleeve is nested within the outer sleeve.
7. The coupling device of claim 6, wherein the stop is a collar having an outer diameter equal to a maximum outer diameter of the outer adapter sleeve and an inner diameter equal to an outer diameter of the sleeve.
8. The coupling device according to claim 7, wherein screw holes corresponding to each other are formed in the two ends of the outer connecting sleeve and the retainer rings, and each retainer ring is fixed to the two ends of the outer connecting sleeve through screws.
9. A coupling device according to claim 1, wherein each groove and each projection are provided on the inner wall of the sleeve corresponding to the gap position of two adjacent first through grooves.
10. A coupling device according to any one of claims 1 to 9, wherein the cushioning member is a nylon rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322904372.4U CN220890853U (en) | 2023-10-27 | 2023-10-27 | Coupling device for shaft connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322904372.4U CN220890853U (en) | 2023-10-27 | 2023-10-27 | Coupling device for shaft connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890853U true CN220890853U (en) | 2024-05-03 |
Family
ID=90843895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322904372.4U Active CN220890853U (en) | 2023-10-27 | 2023-10-27 | Coupling device for shaft connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890853U (en) |
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2023
- 2023-10-27 CN CN202322904372.4U patent/CN220890853U/en active Active
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