CN218423102U

CN218423102U - Fixing structure for split shaft sleeve

Info

Publication number: CN218423102U
Application number: CN202220961060.XU
Authority: CN
Inventors: 何亚民; 魏勇; 徐智平
Original assignee: Chengdu Leejun Industrial Co Ltd
Current assignee: Chengdu Leejun Industrial Co Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2023-02-03
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses a burst axle sleeve fixed knot constructs relates to roller and axle sleeve installation fixed technology field, including axle core, burst axle sleeve and fixed knot construct, fixed knot constructs including the limit structure who carries out axial circumference location to burst axle sleeve and carries out the mounting structure who radially positions to burst axle sleeve, at least in pairs the mounting structure sets up in limit structure's axial both ends; the limiting structure comprises a key/key groove arranged on the shaft core and a key groove/key arranged on the segmented shaft sleeve, and the key groove are matched with each other; the mounting structure is connected with the shaft core and the slicing shaft sleeve along the radial direction. The utility model provides a pair of burst axle sleeve fixed knot constructs makes burst axle sleeve install in axle core steadily through fixed knot constructs, avoids at the in-process burst axle sleeve of equipment function not hard up, leads to producing great impact force between burst axle sleeve and the axle core, damages the cooperation department of burst axle sleeve and axle core.

Description

Fixing structure for split shaft sleeve

Technical Field

The utility model relates to a fixed technical field of roller and axle sleeve installation, concretely relates to burst axle sleeve fixed knot constructs.

Background

The high pressure roller mill (roller press) is a special grinding processing device for the latest generation building material cement, metallurgy mine, chemical industry and other industries which are developed and developed at the end of the twentieth century, and can greatly improve the yield of finished products of materials under the condition of extremely low energy consumption and operation cost.

High-pressure roller mills (roller presses) are increasingly widely used and the technology is more and more mature. The roller sleeve is a part directly contacted with materials and is an important factor of high-pressure roller mill (roller press) in use efficiency and high cost.

The conventional integral roller sleeve is directly sleeved on the shaft core, and the roller sleeve is required to be integrally replaced after being worn to a certain degree. When the roller sleeve is integrally replaced, the upper frame, the feeding device, the speed reducer, the bearing seat, the bearing and other parts are required to be detached, the old roller sleeve is taken down and then the new roller sleeve is installed, then the bearing, the bearing seat and other parts are installed, finally the speed reducer is installed on the frame and the feeding device is installed to restore production, the whole process is time-consuming and labor-consuming, the labor intensity of operators is high, the replacement efficiency is low, and the roller sleeve cost and the replacement cost are high.

Based on a plurality of defects of the integral roller sleeve, technical personnel think of adopting the structure of the fragment shaft sleeve to solve the problem of difficult replacement and installation of the integral roller sleeve, but if the fragment shaft sleeve cannot be stably installed on a shaft core, the fragment shaft sleeve can vibrate in the operation process of a high-pressure roller mill (a roller press), and the vibration can generate huge impact force at the joint of the fragment roller and the shaft core, so that the joint is damaged, and the service life of the fragment roller is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: to the problem that exists, the utility model provides a burst axle sleeve fixed knot constructs makes burst axle sleeve install in the axle core steadily the trouble through fixed knot constructs, avoids not hard up at the in-process burst axle sleeve of equipment function, leads to producing great impact force between burst axle sleeve and the axle core, damages the cooperation department of burst axle sleeve and axle core.

The utility model adopts the technical scheme as follows:

a fixing structure of a slicing shaft sleeve comprises a shaft core, the slicing shaft sleeve and a fixing structure, wherein the fixing structure comprises a limiting structure for axially and circumferentially positioning the slicing shaft sleeve and an installation structure for radially positioning the slicing shaft sleeve, and at least paired installation structures are arranged at two axial ends of the limiting structure; the limiting structure comprises a key/key slot arranged on the shaft core and a key slot/key arranged on the segmented shaft sleeve, and the key slot are matched with each other; the mounting structure is connected with the shaft core and the slicing shaft sleeve along the radial direction.

By adopting the technical scheme, the fragmentation shaft sleeve is stably arranged on the shaft core in a way that the mounting structure and the limiting structure are mutually matched, so that the phenomenon that the fragmentation shaft sleeve is loosened in the operation process of equipment to cause large impact force between the fragmentation shaft sleeve and the shaft core and damage the matching part of the fragmentation shaft sleeve and the shaft core is avoided.

Furthermore, the limiting structure comprises a wedge-shaped key and a locking element, a circumferential gap and an axial gap are formed between the key and the key groove, the circumferential gap is a horn-shaped structure with one large end and one small end along the axial direction, the wedge-shaped key comprises a working part and an adjusting part, the working part is matched with the circumferential gap, and the adjusting part is arranged in the axial gap and connected to the working part; the axial end face of the key groove is communicated with the end face of the split shaft sleeve/shaft core through an axial through hole, and one end of the locking element extends into the key groove through the axial through hole and is movably connected with the adjusting part.

By adopting the technical scheme, the locking element is adjusted, the wedge-shaped key is enabled to move towards the necking end of the horn-shaped structure along the axial direction through the locking element, the splitting shaft sleeve is aligned, the gap between the splitting shaft sleeve and the shaft core is eliminated, and the splitting shaft sleeve is further prevented from vibrating relative to the shaft core in the operation process of equipment.

Furthermore, one end, far away from the key groove, of the axial through hole is provided with a limiting element, a step structure protruding along the radial direction is arranged on the locking element, the limiting element can limit the movement of the step structure, and the locking element is in threaded connection with the wedge key.

By adopting the technical scheme, when the slicing shaft sleeve is installed, the locking element is rotated in the forward direction, so that the wedge-shaped key moves to the expansion position towards the necking end; when the slicing shaft sleeve needs to be disassembled, the locking element is reversely rotated, the step surface of the step structure of the locking element is abutted against the limiting element, and the wedge-shaped key is reversely pushed out to the flaring end under the support of the limiting element, so that the slicing shaft sleeve in the expansion state becomes in a loosening state.

Furthermore, axial through holes are formed in the two axial ends of the key groove, a locking element is assembled at one axial through hole, and a jacking element is assembled at the other axial through hole.

Due to the adoption of the technical scheme, the assembly is more convenient and faster by adopting a unilateral limit structure; the jacking element can play a role in axially limiting the key.

Further, the axial both ends of keyway all are equipped with axial through-hole, and two axial through-hole departments all are equipped with locking component, and every locking component corresponds and is connected with the wedge key, and two wedge keys that match with keyway both ends locking component set up relatively.

Due to the adoption of the technical scheme, the two-side limiting structure is adopted, so that the two opposite wedge-shaped keys can be locked in a split manner, and the structure is more stable.

Further, mounting structure includes mounting groove A, mounting groove B, radial through-hole, T type bolt and fixation nut, mounting groove A locates axle core terminal surface, burst axle sleeve terminal surface is located to mounting groove B, radial through-hole intercommunication mounting groove A and mounting groove B, the spiral shell head of T type bolt limits in mounting groove A/mounting groove B, the screw rod passes radial through-hole and stretches into mounting groove B/mounting groove A, fixation nut locates mounting groove B/mounting groove A and assembles the screw rod in T type bolt.

Due to the adoption of the technical scheme, the structure is simple and stable, and the disassembly and the assembly are easy.

Further, the mounting structure comprises a mounting groove A, a radial through hole, a stud and a fixing device, wherein the mounting groove A is arranged on the end face of the split shaft sleeve/shaft core, and the radial through hole is communicated with the mounting groove A and the shaft core/split shaft sleeve along the radial direction; one end of the stud is assembled in the radial through hole, and the other end of the stud extends out of the radial through hole and is limited to the fixing device.

Due to the adoption of the technical scheme, the number of the slots can be reduced, and the manufacturing cost is reduced.

Further, the mounting structure comprises a pin shaft and a mounting hole, the mounting hole is formed in the end portion of the split shaft sleeve/shaft core, the mounting hole is communicated with the side wall of the key groove along the axial direction, and the shaft body of the pin shaft is assembled in the mounting hole, and the pin head is fixed on the split shaft sleeve/shaft core through a fixing element.

Due to the adoption of the technical scheme, grooving is not needed, and the manufacturing cost is further reduced.

Further, the mounting structure comprises a mounting groove A, a mounting groove B, a wedge-shaped clamping block and a clamping bolt, wherein the mounting groove A is arranged on the end face of the shaft core, the mounting groove B is arranged on the end face of the slicing shaft sleeve, and the groove walls of the mounting groove A and the mounting groove B comprise inclined planes matched with the wedge-shaped clamping block; the wedge clamping block comprises a clamping portion A matched with the installation groove A, a clamping portion B matched with the installation groove B and a connecting beam for connecting the clamping portion A with the clamping portion B, and the connecting beam is movably connected with the shaft core and/or the slicing shaft sleeve through a clamping bolt.

By adopting the technical scheme, the clamping part A and the clamping part B move to the expansion position along the corresponding inclined planes by adjusting the clamping bolt, so that the radial gap between the shaft core and the sliced shaft sleeve can be eliminated while the shaft core and the sliced shaft sleeve are connected.

Further, mounting structure includes mounting groove A, mounting groove B, mounting groove C and worker's word key, axle core terminal surface is located to mounting groove A, burst axle sleeve terminal surface is located to mounting groove B, mounting groove C intercommunication mounting groove A and mounting groove B to form the I shape recess with mounting groove A and the cooperation of mounting groove B, worker's word key matches with the I shape recess, worker's word key passes through mounting bolt can dismantle to be connected in the I shape recess.

Due to the adoption of the technical scheme, the assembling process is simple and convenient, and the partitioned shaft sleeve is convenient to disassemble and replace.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses make the burst axle sleeve install in the axle core firmly, avoid not hard up at the in-process burst axle sleeve of equipment function, lead to producing great impact force between burst axle sleeve and the axle core, damage the cooperation department of burst axle sleeve and axle core.

2. The utility model discloses the circumference clearance between key and the keyway has been eliminated.

3. The utility model discloses mounting structure's simple structure, firm, easily dismouting.

4. The utility model discloses a radial clearance between axle core and the burst axle sleeve can be eliminated when mounting structure realizes connecting axle core and burst axle sleeve.

5. The utility model discloses a fixed knot constructs assembly process is simple and convenient, is convenient for dismantle the change to the burst axle sleeve.

Drawings

Fig. 1 is a top view of the limiting structure of the present invention;

fig. 2 is a front view of the limiting structure of the present invention;

fig. 3 is a top view of the double-side limiting structure of the present invention;

FIG. 4 is a schematic structural view of the fastening structure of the present invention;

FIG. 5 is a side view of the fastening structure of the present invention;

FIG. 6 is a schematic structural view of the T-bolt of the present invention;

FIG. 7 is a schematic structural view of the stud of the present invention;

fig. 8 is a schematic structural view of the pin shaft of the present invention;

FIG. 9 is a schematic structural view of the wedge-shaped clamping block of the present invention;

fig. 10 is a schematic structural diagram of the i-shaped key of the present invention.

The mark in the figure is: 1-limiting element, 2-locking element, 201-step structure, 3-split shaft sleeve, 4-shaft core, 5-gas phase rust-proof block, 6-wedge key, 601-working part, 602-adjusting part, 7-T type bolt, 8-flexible element, 9-fixed nut, 10-sealing element, 11-tightening element, 12-circumferential clearance, 13-axial clearance, 14-key groove, 15-key, 16-mounting groove A, 17-mounting groove B, 18-radial through hole, 19-mounting groove C, 20-split pin, 21-stud, 22-fixing device, 23-pin shaft, 24-mounting hole, 25-wedge clamping block, 26-clamping bolt, 27-I-key, 28-fixing element and 29-mounting bolt.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

A fixing structure of a slicing shaft sleeve is shown in figures 4-5 and comprises a shaft core 4, a slicing shaft sleeve 3 and a fixing structure, wherein the fixing structure comprises a limiting structure for axially and circumferentially positioning the slicing shaft sleeve 3 and an installation structure for radially positioning the slicing shaft sleeve 3, and at least paired installation structures are arranged at two axial ends of the limiting structure; the limiting structure comprises a key 15 arranged on the shaft core 4 and a key groove 14 arranged on the sliced shaft sleeve 3, and the key 15 and the key groove 14 are matched with each other; the mounting structure radially connects the shaft core 4 and the split shaft sleeve 3. Specifically speaking, through the mode that mounting structure and limit structure mutually supported, make burst axle sleeve 3 install in axle core 4 firmly, avoid in the in-process that equipment operated burst axle sleeve 3 not hard up, lead to producing great impact force between burst axle sleeve 3 and the axle core 4, damage the cooperation department of burst axle sleeve 3 and axle core 4.

Preferably, the mounting structures are arranged on two sides of the limiting structure along the circumferential direction, so that the connection between the split shaft sleeve 3 and the shaft core 4 can be further ensured to be stable.

Example 2

Example 2 is a further modification to example 1; further explaining, the same parts are not repeated herein, as shown in fig. 1-2, the limiting structure comprises a wedge key 6 and a locking element 2, a circumferential gap 12 and an axial gap 13 exist between the key 15 and the key groove 14, the circumferential gap 12 is a trumpet-shaped structure with one larger end and one smaller end along the axial direction, the wedge key 6 comprises a working part 601 and an adjusting part 602, the working part 601 is matched with the circumferential gap 12, and the adjusting part 602 is arranged in the axial gap 13 and connected to the working part 601; the axial end face of the key groove 14 is communicated with the end face of the sliced shaft sleeve 3 through an axial through hole, and one end of the locking element 2 extends into the key groove 14 through the axial through hole and is movably connected with the adjusting part 602. Specifically, the locking element 2 is adjusted, the wedge-shaped key 6 is moved towards the necking end of the horn-shaped structure along the axial direction through the locking element 2, the slicing shaft sleeve 3 is aligned, the gap between the slicing shaft sleeve 3 and the shaft core 4 is eliminated, and the slicing shaft sleeve 3 is further prevented from vibrating relative to the shaft core 4 in the operation process of the equipment. Preferably, a groove is formed in the key 15, the groove is formed in the surface of the key 15 corresponding to the bottom of the key groove 14, a gas-phase rust prevention block 5 capable of volatilizing rust prevention substances is arranged in the groove, the gas-phase rust prevention block 5 is the prior art, specific components of the gas-phase rust prevention block 5 are not described herein any more, a sealing element 10 is arranged around the key groove 14, after the shaft core 4 and the segmented shaft sleeve 3 are assembled, the sealing element 10 can form sealing between the shaft core 4 and the segmented shaft sleeve 3, so that a closed cavity is formed inside the sealing element 10, and the rust prevention substances generated after the gas-phase rust prevention block 5 volatilizes can enable the inside of the closed cavity to be kept dry and rust prevention for a long time, so that secondary disassembly and assembly of the shaft core 4 and the segmented shaft sleeve 3 after being used for a long time are facilitated.

The horn-shaped structure comprises a necking end close to the locking element 2, a flaring end far away from the locking element 2 and an inclined plane structure A, wherein the section size of the flaring end is larger than that of the necking end, the inclined plane structure A is arranged on the shaft core 4, and the flaring end and the necking end are respectively arranged at two ends of the inclined plane structure A; the working portion 601 is provided with an inclined plane structure B matched with the inclined plane structure a. In particular, the bevel structure A and the bevel structure B are easy to process; the wedge-shaped key 6 is pulled outwards through the locking element 2, and the wedge-shaped key 6 moves outwards along the inclined plane to reach the expansion position at the same time, so that the wedge-shaped key 6, the split shaft sleeve 3 and the shaft core 4 are tightly attached to each other and obtain the required expansion force.

The end, far away from the key groove 14, of the axial through hole is provided with a limiting element 1, the locking element 2 is provided with a step structure 201 protruding along the radial direction, the limiting element 1 can limit the movement of the step structure 201, and the locking element 2 is in threaded connection with the wedge key 6. Specifically, when the slicing shaft sleeve 3 is installed, the locking element 2 is rotated in the forward direction, so that the wedge-shaped key 6 moves to an expansion position towards the necking end; when the slicing shaft sleeve 3 needs to be disassembled, the locking element 2 is rotated reversely, the step surface of the step structure of the locking element 2 is abutted against the limiting element 1, and the wedge-shaped key 6 is reversely pushed out to the flaring end under the support of the limiting element 1, so that the slicing shaft sleeve 3 in the expanded state becomes a loose state. Preferably, the limiting element 1 is a locking nut, the locking element 2 is a locking screw, and the rotation directions of the locking nut and the locking screw are opposite.

The wedge key 6 is of an L-shaped structure, the working portion 601 is a long side of the L-shaped structure, the adjusting portion 602 is a short side of the L-shaped structure, and the adjusting portion 602 is in threaded connection with the locking element 2. In particular, the structure is compact, and the production and the processing are easy.

Axial through holes are formed in the two axial ends of the key groove 14, the locking element 2 is assembled at one axial through hole, and the jacking element 11 is assembled at the other axial through hole. Particularly, a single-side limiting structure is adopted, so that the assembly is more convenient and faster; the tightening element 11 can act as an axial stop for the key 15.

Example 3

Embodiment 3 is an alternative to embodiment 1, replacing the arrangement of the locking elements 2 in embodiment 2; further, the same parts are not described in detail herein, and as shown in fig. 3, axial through holes are provided at both axial ends of the key groove 14, the locking elements 2 are assembled at both axial through holes, each locking element 2 is correspondingly connected with a wedge key 6, and the two wedge keys 6 matching with the locking elements 2 at both ends of the key groove 14 are oppositely arranged. Specifically, a bilateral limiting structure is adopted, so that the two opposite wedge-shaped keys 6 can be locked in a split manner, and the structure is more stable.

Example 4

Example 4 is a further modification of examples 1, 2 or 3; further, the same components are not repeated herein, and as shown in fig. 6, the mounting structure includes a mounting groove a16, a mounting groove B17, a radial through hole 18, a T-shaped bolt 7, and a fixing nut 9, where the mounting groove a16 is disposed on an end surface of the shaft core 4, the mounting groove B17 is disposed on an end surface of the segmented shaft sleeve 3, the radial through hole 18 communicates the mounting groove a16 and the mounting groove B17, a screw head of the T-shaped bolt 7 is limited to the mounting groove a16, a screw rod penetrates through the radial through hole 18 and extends into the mounting groove B17, and the fixing nut 9 is disposed in the mounting groove B17 and is assembled to the screw rod of the T-shaped bolt 7. Specifically, the mounting structure in this embodiment has a simple and stable structure, and is easy to assemble and disassemble. Preferably, the end of the T-bolt 7 matched with the fixing nut 9 can be provided with a split pin 20 for limiting the fixing nut 9, so as to prevent the fixing nut 9 from loosening and failing. The T-shaped bolt 7 is further sleeved with a flexible element 8, the fixing nut 9 is matched with the T-shaped bolt 7, the flexible element 8 is abutted to the mounting groove B17, the flexible element 8 can be a butterfly spring group, and by arranging the flexible element 8, the stability of the mounting structure can be improved, and the fixing nut 9 can be protected.

Example 5

Example 5 is a further modification of examples 1, 2 or 3; further explaining, the same components are not repeated herein, and as shown in fig. 7, the mounting structure includes a mounting groove a16, a radial through hole 18, a stud 21 and a fixing device 22, the mounting groove a16 is disposed on an end surface of the segmented shaft sleeve 3, and the radial through hole 18 is communicated with the mounting groove a16 and the segmented shaft core 4 in the radial direction; the stud 21 has one end fitted to the radial through hole 18 and the other end protruding out of the radial through hole 18 and constrained to the fixing means 22. Specifically, in example 5, the number of slots can be reduced and the manufacturing cost can be reduced as compared with example 4. The fixing device 22 is preferably a double-nut locking mechanism, and optionally, a cotter pin 20 for limiting the double-nut locking mechanism may be disposed at one end of the stud bolt 21, which is matched with the double-nut locking mechanism, so as to prevent the double-nut locking mechanism from loosening and failing.

Example 6

Example 5 is a further modification of examples 1, 2 or 3; further, the same components are not described herein again, and as shown in fig. 8, the mounting structure includes a pin 23 and a mounting hole 24, the mounting hole 24 is disposed at an end portion of the segmented shaft sleeve 3, the mounting hole 24 axially communicates with the side walls of the key 15 and the key groove 14, a shaft body of the pin 23 is assembled in the mounting hole 24, and a pin head is fixed to the segmented shaft sleeve 3 through a fixing element 28. Specifically, in example 6, as compared with example 5, grooving is not required, and the manufacturing cost is further reduced.

Example 7

Example 7 is a further modification of examples 1, 2 or 3; further explaining, the same components are not repeated herein, and as shown in fig. 9, the mounting structure includes a mounting groove a16, a mounting groove B17, a wedge-shaped clamping block 25 and a clamping bolt 26, the mounting groove a16 is provided on the end surface of the shaft core 4, the mounting groove B17 is provided on the end surface of the split shaft sleeve 3, and the groove walls of the mounting groove a16 and the mounting groove B17 include inclined surfaces matching with the wedge-shaped clamping block 25; the wedge-shaped clamping block 25 comprises a clamping part A matched with the installation groove A16, a clamping part B matched with the installation groove B17 and a connecting beam for connecting the clamping part A and the clamping part B, and the clamping part A, the clamping part B and the connecting beam are matched with each other to form a U-shaped or similar U-shaped structure; optionally, a mounting groove C19 communicating the mounting groove a16 and the mounting groove B17 may be provided, and the mounting groove C19 may be matched with the connection beam; the connecting beam is movably connected with the axle core 4 by a clamping bolt 26. Specifically, the clamping portion a and the clamping portion B are moved to the expansion position along the corresponding inclined surfaces by adjusting the clamping bolt 26, so that the shaft core 4 and the split sleeve 3 are connected while the radial gap between the shaft core 4 and the split sleeve 3 is eliminated.

Example 8

Example 8 is a further modification of examples 1, 2 or 3; further explaining, the same components are not repeated herein, and as shown in fig. 10, the mounting structure includes a mounting groove a16, a mounting groove B17, a mounting groove C19, and an i-shaped key 27, where the mounting groove a16 is disposed on the end surface of the shaft core 4, the mounting groove B17 is disposed on the end surface of the split shaft sleeve 3, the mounting groove C19 communicates with the mounting groove a16 and the mounting groove B17, and cooperates with the mounting groove a16 and the mounting groove B17 to form an i-shaped groove, the i-shaped key 27 is matched with the i-shaped groove, and the i-shaped key 27 is detachably connected to the i-shaped groove through a mounting bolt 29.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Claims

1. A fixing structure of a slicing shaft sleeve comprises a shaft core (4), the slicing shaft sleeve (3) and a fixing structure, and is characterized in that the fixing structure comprises a limiting structure for axially and circumferentially positioning the slicing shaft sleeve (3) and an installation structure for radially positioning the slicing shaft sleeve (3), and at least paired installation structures are arranged at two axial ends of the limiting structure; the limiting structure comprises a key (15)/a key groove (14) arranged on the shaft core (4) and a key groove (14)/a key (15) arranged on the slicing shaft sleeve (3), and the key (15) and the key groove (14) are matched with each other; the mounting structure is connected with the shaft core (4) and the split shaft sleeve (3) along the radial direction.

2. The split sleeve fixing structure according to claim 1, wherein the limiting structure comprises a wedge-shaped key (6) and a locking element (2), a circumferential gap (12) and an axial gap (13) exist between the key (15) and the key groove (14), the circumferential gap (12) is a trumpet-shaped structure with one larger end and one smaller end along the axial direction, the wedge-shaped key (6) comprises a working part (601) and an adjusting part (602), the working part (601) is matched with the circumferential gap (12), and the adjusting part (602) is arranged in the axial gap (13) and connected to the working part (601); the axial end face of the key groove (14) is communicated with the end face of the split shaft sleeve (3)/shaft core (4) through an axial through hole, and one end of the locking element (2) extends into the key groove (14) through the axial through hole and is movably connected with the adjusting part (602).

3. The split sleeve fixing structure according to claim 2, wherein a limiting element (1) is arranged at one end of the axial through hole far away from the key groove (14), a step structure (201) protruding in the radial direction is arranged on the locking element (2), the limiting element (1) can limit the movement of the step structure (201), and the locking element (2) is in threaded connection with the wedge key (6).

4. A split sleeve fixing structure as claimed in claim 3, wherein the key groove (14) is provided with axial through holes at both axial ends, one of the axial through holes is provided with the locking member (2), and the other axial through hole is provided with the tightening member (11).

5. The split shaft sleeve fixing structure according to claim 3, wherein axial through holes are formed in both axial ends of the key groove (14), locking elements (2) are assembled in both axial through holes, each locking element (2) is correspondingly connected with a wedge key (6), and the two wedge keys (6) matched with the locking elements (2) on both ends of the key groove (14) are oppositely arranged.

6. The split sleeve fixing structure according to any one of claims 1 to 5, wherein the mounting structure comprises a mounting groove A (16), a mounting groove B (17), a radial through hole (18), a T-shaped bolt (7) and a fixing nut (9), the mounting groove A (16) is arranged on the end surface of the shaft core (4), the mounting groove B (17) is arranged on the end surface of the split sleeve (3), the radial through hole (18) is communicated with the mounting groove A (16) and the mounting groove B (17), the head of the T-shaped bolt (7) is limited to the mounting groove A (16)/the mounting groove B (17), the screw rod penetrates through the radial through hole (18) and extends into the mounting groove B (17)/the mounting groove A (16), and the fixing nut (9) is arranged in the mounting groove B (17)/the mounting groove A (16) and is assembled on the screw rod of the T-shaped bolt (7).

7. The split sleeve fixing structure according to any one of claims 1 to 5, wherein the mounting structure comprises a mounting groove A (16), a radial through hole (18), a stud (21) and a fixing device (22), the mounting groove A (16) is arranged on the end surface of the split sleeve (3)/the shaft core (4), and the radial through hole (18) is communicated with the mounting groove A (16) and the shaft core (4)/the split sleeve (3) in the radial direction; one end of the stud (21) is assembled on the radial through hole (18), and the other end of the stud extends out of the radial through hole (18) and is limited to the fixing device (22).

8. The split sleeve fixing structure according to any one of claims 1 to 5, wherein the mounting structure comprises a pin (23) and a mounting hole (24), the mounting hole (24) is provided at an end of the split sleeve (3)/the shaft core (4), the mounting hole (24) axially communicates with a side wall of the key (15) and the key groove (14), a shaft body of the pin (23) is assembled in the mounting hole (24), and a pin head is fixed to the split sleeve (3)/the shaft core (4) through a fixing element (28).

9. The split sleeve fixing structure according to any one of claims 1 to 5, wherein the mounting structure comprises a mounting groove A (16), a mounting groove B (17), a wedge-shaped clamping block (25) and a clamping bolt (26), the mounting groove A (16) is arranged on the end surface of the shaft core (4), the mounting groove B (17) is arranged on the end surface of the split sleeve (3), and the groove walls of the mounting groove A (16) and the mounting groove B (17) comprise inclined surfaces matched with the wedge-shaped clamping block (25); the wedge-shaped clamping block (25) comprises a clamping portion A matched with the installation groove A (16), a clamping portion B matched with the installation groove B (17) and a connecting beam for connecting the clamping portion A with the clamping portion B, and the connecting beam is movably connected with the shaft core (4) and/or the slicing shaft sleeve (3) through a clamping bolt (26).

10. The slicing shaft sleeve fixing structure according to any one of claims 1 to 5, wherein the mounting structure comprises a mounting groove A (16), a mounting groove B (17), a mounting groove C (19) and an I-shaped key (27), the mounting groove A (16) is arranged on the end surface of the shaft core (4), the mounting groove B (17) is arranged on the end surface of the slicing shaft sleeve (3), the mounting groove C (19) is communicated with the mounting groove A (16) and the mounting groove B (17) and is matched with the mounting groove A (16) and the mounting groove B (17) to form an I-shaped groove, the I-shaped key (27) is matched with the I-shaped groove, and the I-shaped key (27) is detachably connected to the I-shaped groove through a mounting bolt (29).