Variable width multi-module roller cover and method of use thereof

Abstract

This invention discloses a variable-width multi-module roller sleeve and its usage method, relating to the technical field of vertical mill equipment. It includes a clamping plate, an axial locking bolt pair, a multi-module roller sleeve assembly, a roller core, and locking screws. The multi-module roller sleeve assembly is fixedly installed on the roller core through the cooperation of the clamping plate, the axial locking bolt pair, and the locking screws. In this invention, the cooperation of the axial ejection mechanism, the radial ejection mechanism, and the locking mechanism not only allows for adjustment of the roller sleeve's width by replacing roller sleeve modules, but also enables targeted replacement of severely worn areas on the roller sleeve by replacing roller sleeve module units. The built-in axial ejection mechanism, radial ejection mechanism, and locking mechanism make the replacement of roller sleeve module units very convenient, which is beneficial for adjusting the roller sleeve width and whether the middle roller sleeve module is equipped with an exhaust groove according to production needs of the vertical mill, and also facilitates targeted inspection and replacement of worn roller sleeves.

Description

Technical Field

[0001] This invention relates to the field of vertical mill equipment technology, specifically to a variable-width multi-module roller sleeve and its usage method. Background Technology

[0002] Vertical mills, as a highly efficient and energy-saving grinding equipment, have overcome many shortcomings of traditional ball mills since their first appearance in the 1920s with their unique grinding principle. Utilizing the bed-feed grinding principle, vertical mills offer advantages such as high grinding efficiency, low energy consumption, large allowable feed particle size, simple grinding process, small footprint, low civil engineering costs, low noise, low wear, long service life, and easy operation. Since the 1980s, with the rapid development of my country's cement industry, numerous domestic research institutions and equipment manufacturers have invested in the research and development of vertical mills, leading to the rapid development of vertical mill technology in China. Currently, due to their excellent grinding performance and environmental performance, vertical mills have become the preferred equipment for many enterprises to prepare powders. The main function of a vertical mill is to grind materials, which is accomplished by its grinding section, consisting of grinding rollers and grinding discs. After the material is fed into the center of the grinding disc, it moves to the outside of the grinding disc due to the centrifugal force of the rotating grinding disc. When the material moves between the grinding roller and the grinding disc, it is ground by a combination of forces such as squeezing and shearing. The ground material continues to move towards the edge of the grinding disc due to the centrifugal force of the rotating grinding disc, and is eventually thrown away from the grinding disc.

[0003] As a key component of the grinding section of a vertical mill, the roller sleeve has been the subject of numerous patents, primarily focusing on three aspects: auxiliary equipment for roller sleeve welding, roller sleeve materials, and roller sleeve wear detection equipment. Regarding auxiliary equipment for roller sleeve welding, patent application number 201711133947.X describes a vertical mill roller sleeve welding transmission device that simplifies the overall welding process during roller sleeve repair. Regarding roller sleeve materials, patent application number 201822071577.8 describes a vertical mill ceramic roller sleeve that combines metal and ceramic to improve its service life. Regarding roller sleeve wear detection equipment, patent application number CN201020280816.1 describes a roller sleeve detection tool for slag powder vertical mills that can quickly measure the wear condition of the roller sleeve. While these patents focus on updating and improving the technology of conventional integral roller sleeves, a significant gap remains regarding the design of the roller sleeve's own structure. In the production process of a vertical mill, the grinding width and grinding curve of the grinding zone significantly affect grinding efficiency. For different materials used during production, manufacturers will also selectively replace roller sleeves equipped with venting grooves. Over long periods of use, uneven wear will occur on the roller sleeve surface; often, only the most severely worn areas need to be replaced. Conventional integral roller sleeves, when encountering these problems, can only be replaced as a whole. This results in a large overall size and weight of the roller sleeve, making disassembly and assembly difficult, time-consuming, and costly, thus disrupting normal production operations. Summary of the Invention

[0004] The purpose of this invention is to overcome the technical problems of existing technologies, such as the inability to adjust the grinding width of the roller sleeve according to grinding efficiency and output requirements, and the time-consuming and labor-intensive nature of replacing the roller sleeve. This invention provides a variable-width multi-module roller sleeve and its usage method.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A variable-width multi-module roller sleeve includes: a clamping plate, an axial locking bolt pair, a multi-module roller sleeve assembly, a roller core, and locking screws. The multi-module roller sleeve assembly is fixedly mounted on the roller core through the cooperation of the clamping plate, the axial locking bolt pair, and the locking screws. The multi-module roller sleeve assembly includes a near-side roller sleeve module, a middle-layer roller sleeve module, and a far-side roller sleeve module. The multi-module roller sleeve assembly is a multi-module unitized roller sleeve, with multiple axial layers and multiple radial lobes. The multiple axial layers divide the roller sleeve into multiple modules, and the multiple radial lobes further divide the roller sleeve modules into multiple roller sleeve module units, which facilitates the fixed-point inspection and replacement of the roller sleeve after wear. The middle-layer roller sleeve module includes a middle-layer roller sleeve body, an embedding mechanism, an axial ejection mechanism, a radial ejection mechanism, and a locking mechanism.

[0007] The embedding mechanism is distributed on both sides of the middle roller sleeve body and on the inner side of the near roller sleeve module and the far roller sleeve module. The locking between the modules is achieved through the mutual cooperation between the embedding mechanisms.

[0008] The axial ejection mechanism is located in the middle of the middle layer roller sleeve body and is used to drive the axial ejection of any roller sleeve module unit on the near side roller sleeve module and the far side roller sleeve module.

[0009] The radial ejection mechanism is located in the middle of the middle layer roller sleeve body and is used to drive the radial ejection of any roller sleeve module unit on the middle layer roller sleeve module.

[0010] The locking mechanism is installed between the axial ejection mechanism and the radial ejection mechanism to fix the axial ejection mechanism and the radial ejection mechanism.

[0011] Preferred:

[0012] The embedding mechanism is a "concave-convex-concave" structure set on both sides of the middle roller sleeve body. The embedding mechanism is set in a "convex-concave-convex" structure on the inner side of the near roller sleeve module and the far roller sleeve module. When the three layers are assembled, they can be embedded into each other to achieve circumferential fixation of the roller sleeve during operation.

[0013] Preferred:

[0014] The axial ejection mechanism includes:

[0015] The pinion and threaded shaft are both located in the central circular through hole of the middle roller sleeve body. Both ends of the threaded shaft are threaded with top cylinders, and the outer wall of the top cylinders abuts against the inner wall of the circular through hole. Keyways are provided on the inner wall of the circular through hole of the middle roller sleeve body and the outer wall of the top cylinders. A guide key is provided in the keyway of the circular through hole of the middle roller sleeve body, and the guide key cooperates with the keyway of the top cylinders.

[0016] Preferred:

[0017] The inner side of the middle roller sleeve body is provided with a rectangular groove, which is connected to a circular through hole. A bearing seat is provided on the middle roller sleeve body, and a drive shaft is rotatably mounted on the bearing seat. A large gear is fixedly sleeved on the outer periphery of the middle part of the drive shaft. A transmission shaft is provided in the rectangular groove on the inner side of the middle roller sleeve body, and a transmission gear is fixedly sleeved on the outer periphery of the transmission shaft. The transmission gear meshes with both the large gear and the small gear.

[0018] Preferred:

[0019] A drive handle is mounted on the top of the drive shaft via a rotating pin.

[0020] Preferred:

[0021] The radial ejection mechanism includes:

[0022] A torsion shaft seat is fixedly installed on the inner side of the middle layer roller sleeve body. A torsion shaft is provided on the torsion shaft seat. A drive gear is keyed to the outer periphery of the middle part of the torsion shaft. A rack groove is fixedly provided on the inner side of the middle layer roller sleeve body. An ejector rack is slidably provided on the rack groove. The ejector rack meshes with the drive gear.

[0023] Preferred:

[0024] A drive handle is mounted on the top of the torsion shaft via a hinge pin.

[0025] Preferred:

[0026] The ejector rack has a waist-shaped groove on its rear side, and a limit bolt is provided on the rack slide groove. One end of the limit bolt is located in the waist-shaped groove on the rear side of the ejector rack.

[0027] Preferred:

[0028] The locking mechanism includes:

[0029] A locking shaft seat is fixedly installed on the inner side of the middle layer roller sleeve body. A fixed shaft is provided on the locking shaft seat. A fixed groove is opened in the middle of the fixed shaft. A spiral spring is fixedly installed in the fixed groove. An elastic band is fixedly installed on the outer side of the spiral spring and the inner side of the middle layer roller sleeve body. The elastic band simultaneously binds and fixes the drive handle and the drive grip.

[0030] This invention also discloses a method for using a variable-width multi-module roller sleeve, which includes the following steps:

[0031] S1: Place the threaded shaft of the axial ejection mechanism of the middle roller sleeve module unit into the central circular through hole. The two side top cylinders need to be screwed in until they are fully inserted and flush with the groove surface of the middle roller sleeve body. Place the guide key and fix the guide key on the middle roller sleeve body. Connect the other axial ejection mechanism components according to the connection relationship.

[0032] S2: Connect the radial ejection mechanism and locking mechanism components according to their connection relationship, and then pull the drive handle and drive grip into the elastic band for fixation;

[0033] S3: The far-side roller sleeve module, the middle-layer roller sleeve module, and the near-side roller sleeve module are fixed by the embedding mechanism, and then completely fixed to the roller core by the clamping plate, locking screws and axial locking bolt pair.

[0034] S4: When it is necessary to replace the roller sleeve module unit, first disassemble the axial clamping plate and axial locking bolt pair of the middle roller sleeve module unit;

[0035] S5: Then pull the elastic band of the locking mechanism, pull out the drive handle, rotate the drive handle clockwise to make the axial ejection mechanism eject the corresponding near-side roller sleeve module unit, and then rotate the drive handle counterclockwise to make the axial ejection mechanism eject the corresponding far-side roller sleeve module unit.

[0036] S6: Finally, return the drive handle, pull out the drive lever, and rotate it counterclockwise. This drives the radial ejection mechanism's ejection rack to push inward against the roller core, thereby radially ejecting the middle roller sleeve module unit to be replaced. Place the new middle roller sleeve module unit into the replacement position, fix it on both sides by the embedding mechanism, and then completely fix it to the roller core by the clamping plate, locking screws, and axial locking bolt pair.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] 1. In this invention, the axial ejection mechanism, radial ejection mechanism and locking mechanism work together to not only adjust the width of the roller sleeve by replacing the roller sleeve module, but also to replace the roller sleeve module unit to perform targeted replacement of severely worn areas on the roller sleeve. The axial ejection mechanism, radial ejection mechanism and locking mechanism built into the roller sleeve make the replacement of the roller sleeve module unit very convenient, which is beneficial for the vertical mill to adjust the width of the roller sleeve and whether the middle roller sleeve module is equipped with an exhaust groove according to production needs, and is also beneficial for targeted inspection and replacement of the roller sleeve after wear.

[0039] 2. In this invention, the axial ejection mechanism is made simple by the cooperation of the threaded shaft, pinion, ejector cylinder and guide key. The ejection direction can be controlled by the forward and reverse rotation of the drive handle. At the same time, the axial ejection mechanism can also make the threaded shaft and ejector cylinder completely hidden in the middle roller sleeve body, without affecting the embedding mechanism.

[0040] 3. In this invention, the drive gear, rack groove and ejection rack provided in the radial ejection mechanism can radially eject the middle layer roller sleeve module unit that needs to be replaced in the narrow space of the roller sleeve and roller core, which is simple and reliable.

[0041] 4. In this invention, the spiral spring in the locking mechanism provides the power for locking, which is simple in structure. In addition, the elastic band is designed so that the drive handle and the drive grip can be locked elastically and can absorb vibration. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structural assembly of a variable-width multi-module roller sleeve and its usage method according to one embodiment of the present invention.

[0043] Figure 2 This is an exploded view of the overall structure of a variable-width multi-module roller sleeve and its usage method according to one embodiment of the present invention.

[0044] Figure 3 This is an exploded view of the overall structure of a multi-module roller sleeve assembly in a variable-width multi-module roller sleeve and its usage method according to an embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram of the overall structure of the middle roller sleeve module in a variable-width multi-module roller sleeve and its usage method according to an embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram of the overall structure of the axial ejection mechanism in a variable-width multi-module roller sleeve and its usage method according to an embodiment of the present invention.

[0047] Figure 6 This is a schematic diagram of the overall structure of the radial ejection mechanism in a variable-width multi-module roller sleeve and its usage method according to an embodiment of the present invention.

[0048] Figure 7 This is a schematic diagram of the overall structure of the locking mechanism in a variable-width multi-module roller sleeve and its usage method according to an embodiment of the present invention.

[0049] Figure 8 This is a schematic diagram of the overall structure of a variable-width multi-module roller sleeve and its usage method according to one embodiment of the present invention.

[0050] In the picture:

[0051] 1. Clamping plate; 2. Axial locking bolt pair; 3. Multi-module roller sleeve assembly; 31. Proximal roller sleeve module; 32. Middle roller sleeve module; 321. Middle roller sleeve body; 322. Embedding mechanism; 323. Axial ejection mechanism; 3231. Pinion gear; 3232. Threaded shaft; 3233. Top cylinder; 3234. Guide key; 3235. Transmission gear; 3236. Large gear; 3237. Bearing seat; 3238. Drive handle; 3239. Rotating pin; 32310. Drive shaft; 32311, Drive shaft; 324, Radial ejection mechanism; 3241, Torsion shaft seat; 3242, Drive gear; 3243, Rack groove; 3244, Limit bolt; 3245, Ejection rack; 3246, Torsion shaft; 3247, Hinge pin; 3248, Drive handle; 325, Locking mechanism; 3251, Locking shaft seat; 3252, Elastic band; 3253, Fixed shaft; 3254, Scroll spring; 33, Distal roller sleeve module; 4, Roller core; 5, Locking screw. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Combined with appendix Figure 1-8 In this embodiment, a variable-width multi-module roller sleeve and its usage method include: a clamping plate 1, an axial locking bolt pair 2, a multi-module roller sleeve assembly 3, a roller core 4, and locking screws 5. The multi-module roller sleeve assembly 3 is fixedly installed on the roller core 4 through the cooperation of the clamping plate 1, the axial locking bolt pair 2, and the locking screws 5. The multi-module roller sleeve assembly 3 includes a near-side roller sleeve module 31, a middle-layer roller sleeve module 32, and a far-side roller sleeve module 33. The multi-module roller sleeve assembly 3 is a multi-module unitized roller sleeve, with multiple axial layers and multiple radial lobes. The axial multiple layers divide the roller sleeve into multiple modules, and the radial multiple lobes further divide the roller sleeve modules into multiple roller sleeve module units, which facilitates the fixed-point inspection and replacement of the roller sleeve after wear. The middle-layer roller sleeve module 32 includes a middle-layer roller sleeve body 321, an embedding mechanism 322, and an axial ejection mechanism 3. 23. Radial ejection mechanism 324 and locking mechanism 325; Embedding mechanism 322 is distributed on both sides of the middle roller sleeve body 321 and the inner side of the near roller sleeve module 31 and the far roller sleeve module 33, and the locking between modules is achieved through the mutual cooperation between the embedding mechanisms 322; Axial ejection mechanism 323 is set in the middle of the middle roller sleeve body 321, and is used to drive the axial ejection of any roller sleeve module unit on the near roller sleeve module 31 and the far roller sleeve module 33; Radial ejection mechanism 324 is set in the middle of the middle roller sleeve body 321, and is used to drive the radial ejection of any roller sleeve module unit on the middle roller sleeve module 32; Locking mechanism 325 is installed between axial ejection mechanism 323 and radial ejection mechanism 324, and is used to fix axial ejection mechanism 323 and radial ejection mechanism 324. The embedding mechanism 322 has a concave-convex-concave structure on both sides of the middle roller sleeve body 321. The embedding mechanism 322 has a convex-convex structure on the inner side of the near roller sleeve module 31 and the far roller sleeve module 33. When the three layers are assembled, they can be embedded into each other to achieve circumferential fixation of the roller sleeve during operation.

[0054] Specifically, when it is necessary to replace the roller sleeve module unit, firstly, the axial clamping plate 1 and axial locking bolt pair 2 of the middle roller sleeve module 32 unit are disassembled. Then, the locking mechanism 325 is pulled to release the fixation of the axial ejection mechanism 323 and the radial ejection mechanism 324. Then, the corresponding near-side roller sleeve module 31 unit is ejected by the axial ejection mechanism 323, and then the corresponding far-side roller sleeve module 33 unit is ejected again by the axial ejection mechanism 323. The radial ejection mechanism 324 is driven to push the roller core 4 inward, thereby radially ejecting the middle roller sleeve module 32 unit to be replaced. The new middle roller sleeve module 32 unit is placed in the replacement position, so that its two sides are fixed by the embedding mechanism 322. Finally, it is completely fixed to the roller core 4 by the clamping plate 1, locking screw 5 and axial locking bolt pair 2.

[0055] To facilitate a thorough understanding of the specific structure and principle of the axial ejection mechanism 323 by those skilled in the art, further explanation of the axial ejection mechanism 323 is provided. In this embodiment, the axial ejection mechanism 323 includes: a pinion 3231 and a threaded shaft 3232. Both the pinion 3231 and the threaded shaft 3232 are disposed within a circular through hole in the middle of the middle layer roller sleeve body 321. Both ends of the threaded shaft 3232 are threadedly fitted with top cylinders 3233, and the outer wall of the top cylinders 3233 abuts against the inner wall of the circular through hole. Keyways are provided on the inner wall of the circular through hole of the middle layer roller sleeve body 321 and the outer wall of the top cylinders 3233. A guide key 3234 is provided within the keyway in the circular through hole of the middle layer roller sleeve body 321, and the guide key 3234 cooperates with the keyway of the top cylinder 3233. The middle layer roller sleeve body 321... A rectangular groove is provided on the inner side, which is connected to a circular through hole. A bearing seat 3237 is provided on the middle roller sleeve body 321. A drive shaft 32310 is rotatably mounted on the bearing seat 3237. A large gear 3236 is fixedly sleeved on the outer periphery of the middle part of the drive shaft 32310. A transmission shaft 32311 is provided in the rectangular groove on the inner side of the middle roller sleeve body 321. A transmission gear 3235 is fixedly sleeved on the outer periphery of the transmission shaft 32311. The transmission gear 3235 meshes with both the large gear 3236 and the small gear 3231. A drive handle 3238 is mounted on the top of the drive shaft 32310 through a rotating pin 3239.

[0056] Specifically, pulling the drive handle 3238 causes the drive shaft 3210 connected to it to rotate on the bearing seat 3237. The drive shaft 3210 drives the large gear 3236 fixedly sleeved on its periphery to rotate. The large gear 3236 drives the transmission gear 3235 meshing with it to rotate. The transmission gear 3235 then drives the small gear 3231 meshing with it to rotate. The small gear 3231 drives the threaded shaft 3232 to rotate. The threaded shaft 3232 drives the two top cylinders 3233 to slide upward along the guide key 3234, thereby pushing out the near side roller sleeve module 31 through the top cylinders 3233. Then, by rotating the drive handle 3238 in the opposite direction, the top cylinders 3233 slide downward along the guide key 3234, thus pushing out the far side roller sleeve module 33.

[0057] To facilitate a thorough understanding of the specific structure and principle of the radial ejection mechanism 324 and the locking mechanism 325 by those skilled in the art, further explanations are provided for the radial ejection mechanism 324 and the locking mechanism 325. In this embodiment, the radial ejection mechanism 324 includes: a torque shaft seat 3241, which is fixedly installed on the inner side of the middle roller sleeve body 321; a torque shaft 3246 is provided on the torque shaft seat 3241; a drive gear 3242 is keyed to the outer periphery of the middle part of the torque shaft 3246; a rack groove 3243 is fixedly provided on the inner side of the middle roller sleeve body 321; an ejection rack 3245 is slidably provided on the rack groove 3243; the ejection rack 3245 meshes with the drive gear 3242; a drive handle 3248 is installed on the top end of the torque shaft 3246 through a hinge pin 3247; a waist-shaped groove is provided on the rear side of the ejection rack 3245; a limit bolt 3244 is provided on the rack groove 3243; one end of the limit bolt 3244 is located in the waist-shaped groove on the rear side of the ejection rack 3245. The locking mechanism 325 includes: a locking shaft seat 3251, which is fixedly installed on the inner side of the middle roller sleeve body 321. A fixing shaft 3253 is provided on the locking shaft seat 3251. A fixing groove is provided in the middle of the fixing shaft 3253. A spiral spring 3254 is fixedly installed in the fixing groove. An elastic band 3252 is fixedly installed on the outer side of the spiral spring 3254 and the inner side of the middle roller sleeve body 321. The elastic band 3252 simultaneously binds and fixes the drive handle 3238 and the drive handle 3248.

[0058] Specifically, pulling the drive handle 3248 causes the connected torque shaft 3246 to rotate, making the torque shaft 3246 rotate on the torque shaft seat 3241. The torque shaft 3246 then drives the drive gear 3242, which is fixedly sleeved on its periphery, to rotate. The drive gear 3242 drives the ejector rack 3245, which meshes with it, to slide within the rack groove 3243 fixedly installed inside the middle roller sleeve body 321, so that the ejector rack 3245 ejects the middle roller sleeve module 32 that needs to be replaced. Pulling the elastic band 3252 causes the spiral spring 3254 to rotate and stretch, thereby releasing the elastic band 3252 from binding and fixing the drive handle 3238 and the drive handle 3248. After the elastic band 3252 is released, the spiral spring 3254 returns to its original position, so that the elastic band 3252 firmly binds and fixes the drive handle 3238 and the drive handle 3248.

[0059] Working principle: When it is necessary to replace the roller sleeve module unit, first disassemble the axial clamping plate 1 and axial locking bolt pair 2 of the middle roller sleeve module 32 unit. Then, pull the locking mechanism 325 to release the fixation of the axial ejection mechanism 323 and the radial ejection mechanism 324. Then, the corresponding near roller sleeve module 31 unit is ejected by the axial ejection mechanism 323, and then the corresponding far roller sleeve module 33 unit is ejected by the axial ejection mechanism 323 again. By driving the radial ejection mechanism 324 to push the roller core 4 inward, the middle roller sleeve module 32 unit to be replaced is ejected radially. The new middle roller sleeve module 32 unit is placed in the replacement position, so that its two sides are fixed by the embedding mechanism 322. Finally, it is completely fixed to the roller core 4 by the clamping plate 1, locking screw 5 and axial locking bolt pair 2.

[0060] Pulling the drive handle 3238 causes the drive shaft 3210 connected to it to rotate on the bearing seat 3237. The drive shaft 3210 drives the large gear 3236 fixedly sleeved on its periphery to rotate. The large gear 3236 drives the transmission gear 3235 meshing with it to rotate. The transmission gear 3235 then drives the small gear 3231 meshing with it to rotate. The small gear 3231 drives the threaded shaft 3232 to rotate. The threaded shaft 3232 drives the two top cylinders 3233 to slide upward along the guide key 3234, thereby pushing out the near side roller sleeve module 31 through the top cylinders 3233. By rotating the drive handle 3238 in the opposite direction again, the top cylinders 3233 slide downward along the guide key 3234, thus pushing out the far side roller sleeve module 33.

[0061] Pulling the drive handle 3248 causes the connected torque shaft 3246 to rotate, making the torque shaft 3246 rotate on the torque shaft seat 3241. The torque shaft 3246 then drives the drive gear 3242, which is fixedly sleeved on its periphery, to rotate. The drive gear 3242 drives the ejector rack 3245, which meshes with it, to slide within the rack groove 3243 fixedly installed inside the middle roller sleeve body 321, so that the ejector rack 3245 ejects the middle roller sleeve module 32 that needs to be replaced. Pulling the elastic band 3252 causes the spiral spring 3254 to rotate and stretch, thereby releasing the elastic band 3252 from the drive handle 3238 and drive handle 3248. After the elastic band 3252 is released, the spiral spring 3254 returns to its original position, so that the elastic band 3252 firmly binds and fixes the drive handle 3238 and drive handle 3248.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-module roller sleeve with variable width, characterized in that, include: The assembly includes a clamping plate (1), an axial locking bolt pair (2), a multi-module roller sleeve assembly (3), a roller core (4), and a locking screw (5). The multi-module roller sleeve assembly (3) is fixedly installed on the roller core (4) through the cooperation of the clamping plate (1), the axial locking bolt pair (2), and the locking screw (5). The multi-module roller sleeve assembly (3) includes a near-side roller sleeve module (31), a middle-layer roller sleeve module (32), and a far-side roller sleeve module (33). The multi-module roller sleeve assembly (3) is a multi-module unitized roller sleeve with multiple axial layers and multiple radial lobes. The multiple axial layers divide the roller sleeve into multiple modules, and the multiple radial lobes further divide the roller sleeve modules into multiple roller sleeve module units, which facilitates the fixed-point inspection and replacement of the roller sleeve after wear. The middle-layer roller sleeve module (32) includes a middle-layer roller sleeve body (321), an embedding mechanism (322), an axial ejection mechanism (323), a radial ejection mechanism (324), and a locking mechanism (325). The embedding mechanism (322) is distributed on both sides of the middle roller sleeve body (321) and the inner side of the near roller sleeve module (31) and the far roller sleeve module (33). The locking between the modules is achieved through the mutual cooperation between the embedding mechanisms (322). The axial ejection mechanism (323) is located in the middle of the middle roller sleeve body (321) and is used to drive the axial ejection of any roller sleeve module unit on the near roller sleeve module (31) and the far roller sleeve module (33); the radial ejection mechanism (324) is located in the middle of the middle roller sleeve body (321) and is used to drive the radial ejection of any roller sleeve module unit on the middle roller sleeve module (32). The locking mechanism (325) is installed between the axial ejection mechanism (323) and the radial ejection mechanism (324) to fix the axial ejection mechanism (323) and the radial ejection mechanism (324).

2. The variable width multi-module roller sleeve according to claim 1, characterized in that: The embedding mechanism (322) is a "concave-convex-concave" structure set on both sides of the middle roller sleeve body (321). The embedding mechanism (322) is set in a "convex-concave-convex" structure on the inner side of the near roller sleeve module (31) and the far roller sleeve module (33). When the three layers are assembled, they can be embedded into each other to achieve circumferential fixation of the roller sleeve during operation.

3. The variable width multi-module roller sleeve according to claim 1, characterized in that: The axial ejection mechanism (323) includes: The pinion (3231) and the threaded shaft (3232) are both located in the central circular through hole of the middle roller sleeve body (321). Both ends of the threaded shaft (3232) are threaded with top cylinders (3233), and the outer wall of the top cylinder (3233) abuts against the inner wall of the circular through hole. The inner wall of the circular through hole of the middle roller sleeve body (321) and the outer wall of the top cylinder (3233) are provided with keyways. A guide key (3234) is provided in the keyway in the circular through hole of the middle roller sleeve body (321), and the guide key (3234) cooperates with the keyway of the top cylinder (3233).

4. A variable width multi-module roller sleeve according to claim 3, characterized in that: A rectangular groove is provided on the inner side of the middle roller sleeve body (321), and the rectangular groove is connected to a circular through hole. A bearing seat (3237) is provided on the middle roller sleeve body (321), and a drive shaft (32310) is rotatably provided on the bearing seat (3237). A large gear (3236) is fixedly sleeved on the outer periphery of the middle part of the drive shaft (32310). A transmission shaft (32311) is provided in the rectangular groove on the inner side of the middle roller sleeve body (321), and a transmission gear (3235) is fixedly sleeved on the outer periphery of the transmission shaft (32311). The transmission gear (3235) meshes with both the large gear (3236) and the small gear (3231).

5. A variable width multi-module roller sleeve according to claim 4, characterized in that: The top end of the drive shaft (32310) is fitted with a drive handle (3238) via a rotating pin (3239).

6. A variable width multi-module roller sleeve according to claim 5, characterized in that: The radial ejection mechanism (324) includes: A torque shaft seat (3241) is fixedly installed on the inner side of the middle roller sleeve body (321). A torque shaft (3246) is provided on the torque shaft seat (3241). A drive gear (3242) is keyed to the outer periphery of the middle part of the torque shaft (3246). A rack groove (3243) is fixedly provided on the inner side of the middle roller sleeve body (321). An ejector rack (3245) is slidably provided on the rack groove (3243). The ejector rack (3245) meshes with the drive gear (3242).

7. A variable width multi-module roller sleeve according to claim 6, characterized in that: The top of the torsion shaft (3246) is fitted with a drive handle (3248) via a hinge pin (3247).

8. A variable width multi-module roller sleeve according to claim 7, characterized in that: The ejector rack (3245) has a waist-shaped groove on its rear side, and a limit bolt (3244) is provided on the rack slide groove (3243). One end of the limit bolt (3244) is located in the waist-shaped groove on the rear side of the ejector rack (3245).

9. A variable width multi-module roller sleeve according to claim 8, characterized in that: The locking mechanism (325) includes: A locking shaft seat (3251) is fixedly installed on the inner side of the middle layer roller sleeve body (321). A fixing shaft (3253) is provided on the locking shaft seat (3251). A fixing groove is provided in the middle of the fixing shaft (3253). A spiral spring (3254) is fixedly installed in the fixing groove. An elastic band (3252) is fixedly installed on the outer side of the spiral spring (3254) and the inner side of the middle layer roller sleeve body (321). The elastic band (3252) simultaneously binds and fixes the drive handle (3238) and the drive handle (3248).

10. A method of using a variable-width multi-module roller sleeve, for operating the variable-width multi-module roller sleeve according to any one of claims 9, characterized in that, Includes the following steps: S1: Place the threaded shaft (3232) of the axial ejection mechanism (323) of the middle roller sleeve module (32) unit into the central circular through hole. The top cylinders (3233) on both sides need to be screwed in until they are fully inserted and just flush with the groove surface of the middle roller sleeve body (321). Place the guide key (3234) and fix the guide key (3234) on the middle roller sleeve body (321). Connect the other axial ejection mechanism (323) components according to the connection relationship. S2: The radial ejection mechanism (324) and locking mechanism (325) are connected according to their connection relationship, and then the drive handle (3238) and drive grip (3248) are pulled into the elastic band (3252) for fixation; S3: The far-side roller sleeve module (33), the middle-layer roller sleeve module (32), and the near-side roller sleeve module (31) are fixed by the embedding mechanism (322), and then completely fixed to the roller core (4) by the clamping plate (1), the locking screw (5) and the axial locking bolt pair (2); S4: When it is necessary to replace the roller sleeve module unit, first disassemble the axial clamping plate (1) and axial locking bolt pair (2) of the middle roller sleeve module (32) unit; S5: Then pull the elastic band (3252) of the locking mechanism (325), pull out the drive handle (3238), rotate the drive handle (3238) clockwise to make the axial ejection mechanism (323) eject the corresponding near-side roller sleeve module (31) unit, and then rotate the drive handle (3238) counterclockwise to make the axial ejection mechanism (323) eject the corresponding far-side roller sleeve module (33) unit; S6: Finally, put the drive handle (3238) back, pull out the drive handle (3248), turn it counterclockwise, drive the radial ejection mechanism (324) to push the ejection rack (3245) inward against the roller core (4), and then radially eject the middle layer roller sleeve module (32) unit to be replaced; put the new middle layer roller sleeve module (32) unit into the replacement position, fix it on both sides by the embedding mechanism (322), and then fix it completely to the roller core (4) by the clamp (1), locking screw (5) and axial locking bolt pair (2).

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