CN214221819U - Coupling and continuous rolling mill - Google Patents

Abstract

The utility model provides a shaft coupling and tandem mill. The shaft coupling includes first half-coupling and the second half-coupling of being connected with first half-coupling, and the second half-coupling includes: the first shaft sleeve is used for being connected with the driven shaft; the second shaft sleeve is detachably connected with the first shaft sleeve, wherein a first tooth-shaped structure is arranged on the end surface of the first shaft sleeve, and a second tooth-shaped structure meshed with the first tooth-shaped structure is arranged on the end surface of the second shaft sleeve facing the first shaft sleeve; the second shaft sleeve is provided with an axial installation through hole; the telescopic assembly is at least partially arranged in a telescopic mode along the axial direction of the first shaft sleeve, so that the first half coupling can be movably arranged in the axial direction relative to the second half coupling, one end of the telescopic assembly is located in the axial installation through hole and connected with the second shaft sleeve, and the other end of the telescopic assembly is connected with the first half coupling. The technical scheme of the utility model the shaft sleeve of shaft coupling among the prior art is difficult for the problem of pulling down after wearing and tearing have been solved.

Description

Coupling and continuous rolling mill

Technical Field

The utility model relates to a mechanical transmission field particularly, relates to a shaft coupling and tandem mill.

Background

The coupling is a mechanical part which firmly couples a driving shaft and a driven shaft in different mechanisms so that the driving shaft and the driven shaft can rotate together and can transmit motion and torque. Sometimes it is used to connect the coupling shaft with other parts (e.g. gears, pulleys, etc.). The shaft coupling also has the functions of compensating the offset (including axial offset, radial offset, angular offset or comprehensive offset) between the driving shaft and the driven shaft caused by inaccurate manufacturing and installation, deformation or thermal expansion in operation and the like, and relieving impact and absorbing vibration.

Among the prior art, the shaft coupling includes two half-couplings, and wherein, the half-coupling with driven shaft connection includes external tooth axle sleeve and the internal spline axle through splined connection to external tooth axle sleeve takes place wearing and tearing easily, owing to adopt splined connection's mode difficult taking apart, so there is the problem of difficult change after external tooth axle sleeve takes place wearing and tearing.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a coupling and a continuous rolling mill, which solve the problem that the shaft sleeve of the coupling in the prior art is not easy to be detached after being worn.

In order to achieve the above object, according to an aspect of the present invention, there is provided a coupling, including a first coupling half and a second coupling half connected to the first coupling half, the second coupling half including: the first shaft sleeve is used for being connected with the driven shaft; the second shaft sleeve is detachably connected with the first shaft sleeve, wherein a first tooth-shaped structure is arranged on the end surface of the first shaft sleeve, and a second tooth-shaped structure meshed with the first tooth-shaped structure is arranged on the end surface of the second shaft sleeve facing the first shaft sleeve; the second shaft sleeve is provided with an axial installation through hole; the telescopic assembly is at least partially arranged in a telescopic mode along the axial direction of the first shaft sleeve, so that the first half coupling can be movably arranged in the axial direction relative to the second half coupling, one end of the telescopic assembly is located in the axial installation through hole and connected with the second shaft sleeve, and the other end of the telescopic assembly is connected with the first half coupling.

Further, the first shaft sleeve comprises a first body and a first connecting portion arranged on the periphery of the first body, the second shaft sleeve comprises a second body and a second connecting portion arranged on the periphery of the second body, the first connecting portion and the second connecting portion are detachably connected, the first tooth-shaped structure is arranged on the end face, facing the second connecting portion, of the first connecting portion, the second tooth-shaped structure is arranged on the end face, facing the first connecting portion, of the second connecting portion, and the axial mounting through hole is formed in the second body.

Furthermore, the first shaft sleeve further comprises a first mounting hole formed in the first connecting portion, the second shaft sleeve further comprises a second mounting hole formed in the second connecting portion, the first mounting hole and the second mounting hole are correspondingly formed, the coupler further comprises a locking member, and the locking member penetrates through the first mounting hole and the second mounting hole to connect the first shaft sleeve and the second shaft sleeve.

Further, the telescopic assembly comprises: the connecting piece is positioned between the first body and the second body and is connected with the second body; the elastic piece is positioned in the axial installation through hole; wherein, the one end and the connecting piece butt of elastic component, the other end and the interior axle sleeve butt of first semi-coupling of elastic component.

Further, the connecting piece includes first shaft section and the second shaft section of being connected with first shaft section, and the one end towards first body of second body is provided with the mounting groove, and first shaft section is located the mounting groove, and first shaft section and this body coupling of second, and the periphery at the second shaft section is established to the elastic component cover, the one end of elastic component and the terminal surface butt of first shaft section.

Furthermore, the telescopic assembly further comprises a guide rod positioned in the axial installation through hole, the guide rod is connected with the connecting piece, the elastic piece is positioned on the periphery of the guide rod, and the axial length of the guide rod is smaller than that of the elastic piece.

Further, the one end of guide bar towards the connecting piece is provided with the third mounting hole, and the one end of connecting piece is equipped with the arch, and the arch is located the third mounting hole, and the other end of guide bar is provided with the toper boss, and from the direction of second half-coupling to first half-coupling, the radial dimension of toper boss reduces gradually.

Further, the coupling further comprises a sealant for sealing a gap between the first tooth-shaped structure and the second tooth-shaped structure, or the first tooth-shaped structure comprises a plurality of first teeth arranged at intervals along the circumferential direction of the first connecting part; the second tooth-shaped structure comprises a plurality of second teeth which are arranged at intervals along the circumferential direction of the second connecting part, and the first teeth and the second teeth are meshed.

Furthermore, the second half coupling also comprises a through groove arranged on the first body and a cover body at least partially positioned in the through groove; or a groove communicated with the first mounting hole is formed in the end face, far away from the second connecting part, of the first connecting part.

According to another aspect of the present invention, there is provided a continuous rolling mill comprising a driving shaft, a driven shaft and the above-mentioned coupling for connecting the driving shaft and the driven shaft.

Use the technical scheme of the utility model, through be equipped with first profile of tooth structure on the terminal surface of first axle sleeve, be equipped with on the terminal surface of the first axle sleeve of orientation of second axle sleeve with the second profile of tooth structure of first profile of tooth structure meshing to the second axle sleeve is connected with first axle sleeve detachably, thereby can accomplish the dismouting between first axle sleeve and the second axle sleeve more easily. Like this, after the first axle sleeve wearing and tearing of second half-coupling, can pull down first axle sleeve from the second axle sleeve to meshing first profile of tooth structure and second profile of tooth structure again after changing new first axle sleeve, in order to prevent to take place relative rotation between first axle sleeve and the second axle sleeve, and install first axle sleeve on the second axle sleeve, in order to accomplish the change of first axle sleeve, thereby improve the convenience of the change of the first axle sleeve of shaft coupling, and then solved the first axle sleeve of shaft coupling and be difficult for pulling down and the problem of installation after wearing and tearing.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a coupling according to an embodiment of the present invention;

fig. 2 shows a close-up view of a second coupling half of the coupling of fig. 1;

fig. 3 shows a left side view of the second coupling part of fig. 2 with the first sleeve removed (in which the second tooth structure is shown); and

fig. 4 shows a schematic structural view of the telescopic assembly of the coupling of fig. 1.

Wherein the figures include the following reference numerals:

10. a first bushing; 11. a first tooth form structure; 12. a first body; 13. a first connection portion; 14. a first mounting hole; 15. a groove; 16. a through groove; 20. a second shaft sleeve; 21. a second tooth-shaped structure; 22. a second body; 23. a second connecting portion; 24. a second mounting hole; 26. mounting grooves; 27. axially installing a through hole; 30. a telescoping assembly; 31. a connecting member; 311. a first shaft section; 312. a second shaft section; 313. a protrusion; 32. an elastic member; 33. a guide bar; 331. a conical boss; 333. a third mounting hole; 40. a locking member; 50. a cover body; 60. a seal ring; 80. a first half coupling; 81. an inner gear ring; 82. an external gear shaft sleeve; 90. a second coupling half.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In the embodiment of the present invention, the axial direction refers to the direction in which the axis of the first sleeve 10 or the second sleeve 20 is located, i.e., the vertical direction as shown in fig. 1.

As shown in fig. 1 to 3, an embodiment of the present invention provides a coupling. The coupling comprises a first coupling half 80 and a second coupling half 90 connected to the first coupling half 80. Wherein the second coupling half 90 comprises a first hub 10, a second hub 20 and a retraction assembly 30. The first shaft sleeve 10 is used for being connected with a driven shaft; the second shaft sleeve 20 is detachably connected with the first shaft sleeve 10, wherein a first tooth-shaped structure 11 is arranged on the end surface of the first shaft sleeve 10, and a second tooth-shaped structure 21 meshed with the first tooth-shaped structure 11 is arranged on the end surface of the second shaft sleeve 20 facing the first shaft sleeve 10; the second sleeve 20 has an axial mounting through hole 27; at least a portion of the telescopic assembly 30 is telescopically arranged in the axial direction of the first sleeve 10 so that the first coupling half 80 is movably arranged in the axial direction relative to the second coupling half 90, one end of the telescopic assembly 30 is located in the axial mounting through hole 27 and connected with the second sleeve 20, and the other end of the telescopic assembly 30 is connected with the first coupling half 80.

In the above arrangement, the first tooth structure 11 is provided on the end surface of the first sleeve 10, the second tooth structure 21 meshed with the first tooth structure 11 is provided on the end surface of the second sleeve 20 facing the first sleeve 10, and the second sleeve 20 is detachably connected to the first sleeve 10, so that the first sleeve 10 and the second sleeve 20 can be easily disassembled. In this way, after the first sleeve 10 of the second coupling half 90 is worn, the first sleeve 10 can be detached from the second sleeve 20, and after a new first sleeve 10 is replaced, the first tooth structure 11 is meshed with the second tooth structure 21 again, and the first sleeve 10 is mounted on the second sleeve 20, so as to complete the replacement of the first sleeve 10, thereby improving the convenience of the replacement of the first sleeve 10 of the coupling, and further solving the problem that the first sleeve 10 of the coupling is not easy to detach and mount after being worn.

Specifically, in the embodiment of the present invention, by providing the telescopic assembly 30, when the first half-coupling 80 and the second half-coupling 90 are axially compressed (i.e. when the driven shaft axially displaces relative to the driving shaft), the telescopic assembly 30 can move the second half-coupling 90 in the axial direction relative to the first half-coupling 80, thereby realizing the function of relaxing the impact.

As shown in fig. 1 to 3, in an embodiment of the present invention, the first sleeve 10 includes a first body 12 and a first connecting portion 13 disposed at the periphery of the first body 12, the second sleeve 20 includes a second body 22 and a second connecting portion 23 disposed at the periphery of the second body 22, the first connecting portion 13 and the second connecting portion 23 are detachably connected, the first tooth structure 11 is disposed at an end surface of the first connecting portion 13 facing the second connecting portion 23, the second tooth structure 21 is disposed at an end surface of the second connecting portion 23 facing the first connecting portion 13, and the axial installation through hole 27 is formed on the second body 22.

Among the above-mentioned technical scheme, through set up first profile of tooth structure 11 on first connecting portion 13, set up second profile of tooth structure 21 at second connecting portion 23, and first profile of tooth structure 11 sets up with the meshing of second profile of tooth structure 21, like this, on the one hand can fix a position the dismantled junction of first connecting portion 13 and second connecting portion 23, on the other hand can prevent first connecting portion 13 and second connecting portion 23 from taking place relative slip after can dismantling the connection, thereby avoid first axle sleeve 10 and second axle sleeve 20 to take place relative slip, and then can improve the fastness of dismantling the connection, make the shaft coupling can transmit motion and moment of torsion better.

Specifically, in the embodiment of the present invention, the first connecting portion 13 and the second connecting portion 23 are detachably connected, so that the first sleeve 10 and the second sleeve 20 can be detachably connected, and the first sleeve 10 can be conveniently detached.

Preferably, as shown in fig. 2, in the embodiment of the present invention, the second body 22 of the second sleeve 20 is a cylindrical structure, but of course, in an alternative embodiment not shown in the drawings, the second body 22 may also be a square cylinder or the like, so that the second sleeve 20 can accommodate the telescopic assembly 30.

Preferably, as shown in fig. 2, in the embodiment of the present invention, the first body 12 of the first sleeve 10 is an annular structure.

As shown in fig. 2, in an embodiment of the present invention, the first sleeve 10 further includes a first mounting hole 14 disposed on the first connecting portion 13, the second sleeve 20 further includes a second mounting hole 24 disposed on the second connecting portion 23, the first mounting hole 14 and the second mounting hole 24 are correspondingly disposed, the shaft coupling further includes a locking member 40, and the locking member 40 passes through the first mounting hole 14 and the second mounting hole 24 to connect the first sleeve 10 and the second sleeve 20.

With the above arrangement, the locker 40 is inserted through the first and second mounting holes 14 and 24, and the locker 40 is locked, so that the first and second coupling parts 13 and 23 can be coupled to each other, thereby coupling the first and second bushings 10 and 20.

Preferably, in the embodiment of the present invention, the first sleeve 10 includes a plurality of first mounting holes 14, a plurality of second mounting holes 24 corresponding to the plurality of first mounting holes 14 one to one, and a plurality of locking members 40 corresponding to the plurality of first mounting holes 14 one to one. Wherein, a plurality of first mounting holes 14 are arranged along the circumferential direction of the first connecting portion 13 at intervals, a plurality of second mounting holes 24 are arranged along the circumferential direction of the second connecting portion 23 at intervals, and a plurality of locking members 40 pass through the plurality of first mounting holes 14 and the plurality of second mounting holes 24 to connect the first connecting portion 13 and the second connecting portion 23.

Preferably, in the embodiment of the present invention, the number of the first mounting holes 14 and the second mounting holes 24 is at least two.

Preferably, in the embodiment of the present invention, the locking member 40 may be a bolt, the plurality of first mounting holes 14 and the plurality of second mounting holes 24 are correspondingly disposed, and the first mounting holes 14 and the second mounting holes 24 are light holes, and the bolt is sleeved with the bolt by a nut after passing through the first mounting holes 14 and the second mounting holes 24, respectively, so as to be fixed. In this way, the bolt connection can secure the firm strength of the connection of the first connection portion 13 and the second connection portion 23. Of course, in an alternative embodiment not shown in the drawings, the second mounting hole 24 can be a threaded hole, and the locking member 40 can be threaded into the second mounting hole 24 after passing through the first mounting hole 14.

Of course, in an alternative embodiment not shown in the drawings, the detachable connection may also be a snap connection or the like.

As shown in fig. 2 and 3, in the embodiment of the present invention, the first mounting hole 14 is disposed through at least a portion of the first tooth structure 11 and the first connecting portion 13, and a portion of the second tooth structure 21 is disposed with the second mounting hole 24. Of course, in an alternative embodiment not shown in the drawings, the first mounting hole 14 may also be provided radially inside or radially outside the first tooth structure 11, and the second mounting hole 24 may be provided radially inside or radially outside the second tooth structure 21.

As shown in fig. 1 and 2, in the embodiment of the present invention, the telescopic assembly 30 includes a connecting member 31 and an elastic member 32. Wherein, the connecting piece 31 is positioned between the first body 12 and the second body 22, and the connecting piece 31 is connected with the second body 22; the elastic member 32 is located in the axial mounting through hole 27; one end of the elastic member 32 abuts against the connecting member 31, and the other end of the elastic member 32 abuts against the inner sleeve of the first coupling half 80.

In the above arrangement, the connecting member 31 can support the elastic member 32, and the connecting member 31 and the axial installation through hole 27 of the second body 22 form a space for accommodating the telescopic assembly 30. When the first coupling half 80 moves axially relative to the second coupling half 90, one end of the elastic member 32 abuts against the connecting member 31, and the other end of the elastic member 32 abuts against the first coupling half 80, so that the first coupling half 80 can be cushioned.

Preferably, in the embodiment of the present invention, the elastic member 32 is a spring.

As shown in fig. 2, in the embodiment of the present invention, the connecting member 31 includes a first shaft section 311 and a second shaft section 312 connected to the first shaft section 311, the one end of the second body 22 facing the first body 12 is provided with a mounting groove 26, the first shaft section 311 is located in the mounting groove 26, the first shaft section 311 is connected to the second body 22, the elastic member 32 is sleeved on the periphery of the second shaft section 312, and one end of the elastic member 32 abuts against the end surface of the first shaft section 311.

With the above arrangement, the first shaft segment 311 of the connecting member 31 can seal the axial mounting through hole 27 of the second body 22, so that a closed space for accommodating the telescopic assembly 30 can be formed. In this way, on the one hand, it is possible to inject grease into this closed space to improve the lubricity of the operation of the elastic element 32, and on the other hand, this closed space can avoid the problems of the reduction of the lubricating effect of the grease and the reduction of the service life of the telescopic assembly 30 due to the external water being introduced.

Specifically, in the embodiment of the present invention, by providing the mounting groove 26 and making the first shaft section 311 be located in the mounting groove 26, the first shaft section 311 can be prevented from occupying the space between the first connecting portion 13 and the second connecting portion 23, so that the first tooth structure 11 and the second tooth structure 21 can be better meshed.

Specifically, the embodiment of the present invention provides a second shaft section 312, and the elastic member 32 is sleeved on the periphery of the second shaft section 312, so that the elastic member 32 can be positioned better, and the elastic member 32 is convenient to install.

Preferably, in an embodiment of the present invention, the first shaft section 311 and the second body 22 are connected by a bolt. Of course, in an alternative embodiment not shown in the drawings, the connection manner of the first shaft segment 311 and the second body 22 may also be a snap connection or the like.

As shown in fig. 4, in the embodiment of the present invention, the telescopic assembly 30 further includes a guide rod 33 located in the axial installation through hole 27, the guide rod 33 is connected to the connecting member 31, the elastic member 32 is located at the periphery of the guide rod 33, and the axial length of the guide rod 33 is smaller than the axial length of the elastic member 32.

In the above arrangement, the guide rod 33 is inserted into the elastic member 32, so that the elastic direction of the elastic member 32 (i.e. the expansion direction of the elastic member 32) can be limited, and the elastic member 32 is prevented from being displaced during compression, thereby guiding the compression direction of the elastic member 32.

In the embodiment of the present invention, the axial length of the elastic member 32 refers to a length of the elastic member 32 in a natural state (the elastic member 32 is not compressed or stretched, i.e., is not subjected to external pressure or tension).

Preferably, in the embodiment of the present invention, the length of the guiding rod 33 is less than the length of the elastic member 32 when not being pressed, and is greater than the length of the elastic member 32 when being in the fully compressed state.

Preferably, in the embodiment of the present invention, the guiding rod 33 is connected to the second shaft section 312 of the connecting member 31 by welding. Of course, in an alternative embodiment not shown in the drawings, the guide rod 33 may be connected to the second shaft section 312 by a threaded connection or the like.

Preferably, in the embodiment of the present invention, the gap between the outer wall surface of the guide rod 33 and the inner wall surface of the axial installation through hole 27 is relatively large, and grease is injected into the sealing cavity of the installation guide rod 33 formed by the inner wall surfaces of the connecting member 31 and the axial installation through hole 27, so that the external moisture can be prevented from entering, and the guide rod 33 and the elastic member 32 are corroded.

As shown in fig. 2 and 4, in the embodiment of the present invention, one end of the guiding rod 33 facing the connecting piece 31 is provided with a third mounting hole 333, one end of the connecting piece 31 is provided with a protrusion 313, the protrusion 313 is located in the third mounting hole 333, the other end of the guiding rod 33 is provided with a tapered boss 331, and the radial dimension of the tapered boss 331 is gradually reduced from the second half-coupling 90 to the first half-coupling 80.

In the above arrangement, the protrusion 313 is inserted into the third mounting hole 333, so that when the guide rod 33 is mounted, the protrusion 313 can position the guide rod 33, and the guide rod 33 can be more conveniently welded to the connecting member 31. Further, the tapered boss 331 is located at a side of the guide rod 33 facing the first coupling half 80, so that, when the elastic member 32 is contracted, a portion of the elastic member 32 where the guide rod 33 is not provided can be guided to the guide rod 33 through the tapered boss 331, and thus the elastic direction of the elastic member 32 can be defined.

As shown in fig. 2, in an embodiment of the present invention, the protrusion 313 is located on the end surface of the second shaft section 312 facing the guide bar 33.

It should be noted that, in the embodiment of the present invention, the farther the tapered boss 331 is from the connecting member 31, the smaller the cross section thereof is, so that the more the elastic member 32 is compressed, the easier the tapered boss 331 is located at the center of the elastic member 32, thereby guiding the elastic member 32 to the guide bar 33.

Preferably, in an embodiment of the present invention, the coupling further includes a sealant for sealing a gap between the first tooth structure 11 and the second tooth structure 21.

Through coating sealed glue before first profile of tooth structure 11 and the meshing of second profile of tooth structure 21, can make first profile of tooth structure 11 and second profile of tooth structure 21 mesh between the back have sealed glue, like this, sealed glue can fill up the clearance between first profile of tooth structure 11 and the second profile of tooth structure 21 to avoid external moisture to get into in second shaft sleeve 20 through the clearance between first profile of tooth structure 11 and the second profile of tooth structure 21, and then improve flexible subassembly 30's life.

As shown in fig. 3, in the embodiment of the present invention, the first tooth structure 11 includes a plurality of first teeth disposed at intervals along the circumferential direction of the first connecting portion 13; the second tooth structure 21 includes a plurality of second teeth arranged at intervals in the circumferential direction of the second connecting portion 23, and the first teeth and the second teeth are engaged with each other.

In the above arrangement, by providing the plurality of first teeth and the plurality of second teeth, the first teeth and the second teeth mesh with each other, so that the reliability of the joint of the first sleeve 10 and the second sleeve 20 can be increased.

As shown in fig. 2, in the embodiment of the present invention, the second coupling part 90 further includes a through groove 16 disposed on the first body 12 and a cover 50 at least partially disposed in the through groove 16.

In the above arrangement, the cover 50 covers the through groove 16 of the first sleeve 10 to isolate the connecting member 31 from the outside, so that the connecting member 31 can be isolated from the outside, thereby preventing external moisture from entering the inside of the second sleeve 20 through the through groove 16.

As shown in fig. 2, in the embodiment of the present invention, the end surface of the first connecting portion 13 far from the second connecting portion 23 is provided with a groove 15 communicating with the first mounting hole 14.

Through the arrangement, the head of the locking piece 40 can be accommodated in the groove 15, so that the attractiveness of the coupler can be improved on the one hand, and on the other hand, the problem that the joint of the first connecting portion 13 and the second connecting portion 23 is loose due to the fact that an external object collides with the locking piece when the coupler works can be solved.

Preferably, as shown in fig. 2, in the embodiment of the present invention, the first sleeve 10 further includes a sealing ring 60 disposed at the periphery of the end portion of the locking member 40, so that on one hand, the problem that the joint between the first connecting portion 13 and the second connecting portion 23 is loose due to the external object colliding with the locking member 40 can be prevented, and on the other hand, the end of the first mounting hole 14 far from the second mounting hole 24 can be sealed, so as to prevent the external moisture from entering between the first tooth structure 11 and the second tooth structure 21.

As shown in fig. 1, in the embodiment of the present invention, the first half-coupling 80 includes a ring gear 81 and an external gear sleeve 82 inserted into the ring gear 81, so that the first half-coupling 80 can be connected to the driving shaft through the external gear sleeve 82, and then the driving shaft and the driven shaft can be connected through the coupling. The specific operation and structure of the first coupling half 80 connected to the driving shaft is well known in the art and will not be described in detail herein.

According to another aspect of the present invention, an embodiment of the present invention provides a continuous rolling mill. The tandem mill comprises a driving shaft, a driven shaft and the coupler for connecting the driving shaft and the driven shaft. The utility model discloses a tandem mill of embodiment has the advantage of above-mentioned shaft coupling, and this place is no longer repeated.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: through be equipped with first profile of tooth structure on the terminal surface of first axle sleeve, be equipped with the second profile of tooth structure with first profile of tooth structure meshing on the terminal surface of the first axle sleeve of orientation of second axle sleeve to second axle sleeve and first axle sleeve detachably are connected, thereby can accomplish the dismouting between first axle sleeve and the second axle sleeve more easily. Therefore, after the first shaft sleeve of the second half coupling is worn, the first shaft sleeve can be detached from the second shaft sleeve, the first tooth-shaped structure is meshed with the second tooth-shaped structure again after a new first shaft sleeve is replaced, the first shaft sleeve is installed on the second shaft sleeve, the first shaft sleeve is replaced, convenience in replacement of the first shaft sleeve of the coupling is improved, and the problem that the first shaft sleeve of the coupling is not easy to detach and install after being worn is solved. Further, the connecting member may seal the axial mounting through hole in the second body, so that a closed space for accommodating the telescopic assembly may be formed. Therefore, on one hand, lubricating grease can be injected into the closed space to improve the working lubricity of the elastic part, and on the other hand, the closed space can avoid the problems that the lubricating effect of the lubricating grease is reduced and the service life of the telescopic assembly is shortened due to the fact that external water is mixed into the closed space.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 coupling, characterized by comprising a first coupling half (80) and a second coupling half (90) connected to said first coupling half (80), said second coupling half (90) comprising:

a first bushing (10) for connection with a driven shaft;

the second shaft sleeve (20) is detachably connected with the first shaft sleeve (10), wherein a first tooth-shaped structure (11) is arranged on the end face of the first shaft sleeve (10), and a second tooth-shaped structure (21) meshed with the first tooth-shaped structure (11) is arranged on the end face, facing the first shaft sleeve (10), of the second shaft sleeve (20); the second shaft sleeve (20) is provided with an axial installation through hole (27);

telescopic assembly (30), at least part of telescopic assembly (30) is followed the axial telescopically setting of first axle sleeve (10), so that first half-coupling (80) for second half-coupling (90) is the movably setting in the axial, telescopic assembly (30)'s one end is located in axial installation through-hole (27) and with second axle sleeve (20) are connected, telescopic assembly (30)'s the other end with first half-coupling (80) are connected.

2. The coupling according to claim 1, characterized in that the first sleeve (10) comprises a first body (12) and a first connecting portion (13) arranged at the periphery of the first body (12), the second sleeve (20) comprises a second body (22) and a second connecting portion (23) arranged at the periphery of the second body (22), the first connecting portion (13) and the second connecting portion (23) are detachably connected, the first tooth structure (11) is arranged at an end face of the first connecting portion (13) facing the second connecting portion (23), the second tooth structure (21) is arranged at an end face of the second connecting portion (23) facing the first connecting portion (13), and the axial mounting through hole (27) is formed on the second body (22).

3. The coupling according to claim 2, characterized in that the first shaft sleeve (10) further comprises a first mounting hole (14) provided at the first connecting portion (13), the second shaft sleeve (20) further comprises a second mounting hole (24) provided at the second connecting portion (23), the first mounting hole (14) and the second mounting hole (24) are correspondingly provided, the coupling further comprises a locking member (40), and the locking member (40) passes through the first mounting hole (14) and the second mounting hole (24) to connect the first shaft sleeve (10) and the second shaft sleeve (20).

4. The coupling according to claim 2, characterized in that the telescopic assembly (30) comprises:

a connection (31) between the first body (12) and the second body (22), the connection (31) being connected to the second body (22);

an elastic member (32) located in the axial mounting through hole (27); one end of the elastic piece (32) is abutted to the connecting piece (31), and the other end of the elastic piece (32) is abutted to the inner shaft sleeve of the first half coupling (80).

5. The shaft coupling according to claim 4, characterized in that the connecting member (31) comprises a first shaft section (311) and a second shaft section (312) connected with the first shaft section (311), one end of the second body (22) facing the first body (12) is provided with a mounting groove (26), the first shaft section (311) is located in the mounting groove (26), the first shaft section (311) is connected with the second body (22), the elastic member (32) is sleeved on the periphery of the second shaft section (312), and one end of the elastic member (32) is abutted to the end face of the first shaft section (311).

6. A coupling according to claim 4, characterized in that the telescopic assembly (30) further comprises a guide rod (33) located in the axial mounting through hole (27), the guide rod (33) being connected with the connecting piece (31), the elastic piece (32) being located at the periphery of the guide rod (33), the axial length of the guide rod (33) being smaller than the axial length of the elastic piece (32).

7. The coupling according to claim 6, characterized in that one end of the guide rod (33) facing the connecting piece (31) is provided with a third mounting hole (333), one end of the connecting piece (31) is provided with a protrusion (313), the protrusion (313) is located in the third mounting hole (333), the other end of the guide rod (33) is provided with a tapered boss (331), and the radial dimension of the tapered boss (331) is gradually reduced from the second half coupling (90) to the first half coupling (80).

8. The coupling according to any one of claims 2 to 7,

the coupler also comprises a sealant for sealing a gap between the first tooth-shaped structure (11) and the second tooth-shaped structure (21); alternatively, the first and second electrodes may be,

the first tooth-shaped structure (11) comprises a plurality of first teeth which are arranged at intervals along the circumferential direction of the first connecting part (13); the second tooth-shaped structure (21) comprises a plurality of second teeth which are arranged at intervals along the circumferential direction of the second connecting part (23), and the first teeth and the second teeth are meshed.

9. The coupling according to claim 3, characterized in that the second coupling half (90) further comprises a through slot (16) provided in the first body (12) and a cover located at least partially within the through slot (16); alternatively, the first and second electrodes may be,

the end face, far away from the second connecting portion (23), of the first connecting portion (13) is provided with a groove (15) communicated with the first mounting hole (14).

10. A continuous rolling mill comprising a drive shaft, a driven shaft and the coupling of any one of claims 1 to 9 for connecting the drive shaft and the driven shaft.

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