Variable-width multi-module roller sleeve and using method thereof

Abstract

The invention discloses a width-variable multi-module roller sleeve and a using method thereof, and relates to the technical field of vertical mill equipment, the width-variable multi-module roller sleeve comprises a clamping plate, an axial locking bolt pair, a multi-module roller sleeve combination, a roller core and a locking screw, and the multi-module roller sleeve combination is fixedly installed on the roller core through cooperation of the clamping plate, the axial locking bolt pair and the locking screw. According to the invention, through the cooperation of the axial ejection mechanism, the radial ejection mechanism and the locking mechanism, not only can the adjustment of the roller sleeve in the width direction by replacing the roller sleeve module be realized, but also the fixed-point updating of the severely worn area on the roller sleeve can be realized by replacing the roller sleeve module unit; the axial ejection mechanism, the radial ejection mechanism and the locking mechanism which are arranged in the roller sleeve enable the roller sleeve module unit to be replaced very conveniently, so that the vertical mill can adjust the width of the roller sleeve and whether the middle-layer roller sleeve module is provided with an exhaust groove or not according to production requirements, and fixed-point maintenance and replacement after the roller sleeve is abraded are also facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of vertical mill equipment, and in particular to a multi-module roller sleeve with variable width and a use method thereof. Background Art

[0002] As a high-efficiency and energy-saving grinding equipment, vertical mill has solved many shortcomings of the traditional ball mill grinding mechanism with its unique grinding principle since its first appearance in the 1920s. Vertical mill uses the material bed grinding principle to grind materials, with high grinding efficiency, low energy consumption, large particle size allowed, simple grinding process, small footprint, low civil engineering cost, low noise, low wear, long service life, simple operation and other advantages. Since the 1980s, with the rapid development of my country's cement industry, many domestic scientific research institutions and equipment companies have invested in the research and development of vertical mills, so that vertical mill technology has been rapidly developed in China. At present, vertical mill has become the preferred equipment for many companies to prepare powders due to its excellent grinding performance and environmental protection indicators. The main function of the vertical mill is to grind materials, which is completed by the grinding part of the vertical mill, which consists 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 effect of the rotation of the grinding disc. When the material moves to between the grinding roller and the grinding disc, it is ground by the combined action of extrusion, shearing and other forces. The ground material continues to move to the edge of the grinding disc due to the centrifugal effect of the rotation of the grinding disc and is finally thrown off the grinding disc.

[0003] Roller sleeves are the key core components of the grinding part of the vertical mill. Currently, there are many patents focusing on three aspects: auxiliary equipment for roller sleeve surfacing, materials for roller sleeves, and roller sleeve wear detection equipment. In terms of auxiliary equipment for roller sleeve surfacing, such as the patent application number 201711133947.X, a vertical mill roller sleeve surfacing transmission device makes the overall surfacing simpler during the roller sleeve repair surfacing process; in terms of roller sleeve materials, such as the patent application number 201822071577.8, a vertical mill ceramic roller sleeve uses a combination of metal and ceramic to improve the service life of the roller sleeve; in terms of roller sleeve wear detection equipment, such as the patent application number CN201020280816.1, the roller sleeve detection tool for the slag micro powder vertical mill can quickly measure the wear of the roller sleeve. The above patents are all aimed at updating and improving the technology of conventional integral roller sleeves, but there is a big gap in the structural design of the roller sleeve itself. In the production process of vertical mills, the grinding width and grinding curve of the grinding area have a significant impact on the grinding efficiency; for different materials replaced during the production process, the manufacturer will also specifically replace the roller sleeve with or without exhaust grooves; for vertical mills that have been in operation for a long time, the roller sleeve surface will show uneven wear, and it is often only necessary to replace the area of ​​the roller sleeve that is more severely worn. When the conventional integral roller sleeve encounters the above problems, the roller sleeve can only be replaced as a whole. The roller sleeve is large in size and weight, difficult to disassemble and assemble, time-consuming, and costly, which affects the normal production and operation of the enterprise. Summary of the invention

[0004] The purpose of the present invention is to overcome the technical problems in the prior art that the grinding width of the roller sleeve cannot be adjusted according to the grinding efficiency and output requirements and the replacement of the roller sleeve is time-consuming and labor-intensive, and to provide a multi-module roller sleeve with a variable width and a method for using the same.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A variable width multi-module roller sleeve, comprising: a clamping plate, an axial locking bolt pair, a multi-module roller sleeve assembly, a roller core and a locking screw, wherein 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 screw, wherein the multi-module roller sleeve assembly comprises a near-side roller sleeve module, a middle-layer roller sleeve module and a far-side roller sleeve module, wherein the multi-module roller sleeve assembly is a roller sleeve multi-module unitization, axial multi-layer, radial multi-petal, wherein the axial multi-layer divides the roller sleeve into a plurality of modules, and the radial multi-petal further divides the roller sleeve module into a plurality of roller sleeve module units, so as to facilitate the fixed-point maintenance and replacement of the roller sleeve after wear, wherein the middle-layer roller sleeve module comprises a middle-layer roller sleeve body, an embedding mechanism, an axial ejection mechanism, a radial ejection mechanism and a locking mechanism;

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

[0008] The axial ejection mechanism is arranged 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 arranged 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, and is used to fix the axial ejection mechanism and the radial ejection mechanism.

[0011] Preferred:

[0012] The embedding mechanism is a "convex-concave" structure arranged on both sides of the middle roller sleeve body, and the embedding mechanism is arranged on the inner side of the proximal roller sleeve module and the distal roller sleeve module in a "convex-concave-convex" structure, which can be embedded in each other during the three-layer assembly to achieve circumferential fixation of the roller sleeve during operation.

[0013] Preferred:

[0014] The axial ejection mechanism comprises:

[0015] A pinion and a threaded shaft, both of which are arranged in the central circular through hole of the middle layer roller sleeve body, both ends of the threaded shaft are threadedly mounted with a top cylinder, and the outer wall of the top cylinder abuts against the inner wall of the circular through hole, the inner wall of the circular through hole of the middle layer roller sleeve body and the outer wall of the top cylinder are both provided with a key groove, and a guide key is provided in the key groove in the circular through hole of the middle layer roller sleeve body, and the guide key cooperates with the key groove of the top cylinder.

[0016] Preferred:

[0017] A rectangular groove is provided on the inner side of the middle layer roller sleeve body, which is connected with the circular through hole. A bearing seat is provided on the middle layer roller sleeve body, and a driving shaft is rotatably provided on the bearing seat. A large gear is provided on the middle outer fixed sleeve of the driving shaft. A transmission shaft is provided in the rectangular groove on the inner side of the middle layer roller sleeve body, and a transmission gear is provided on the outer fixed sleeve of the transmission shaft. The transmission gear is meshed with the large gear and the small gear at the same time.

[0018] Preferred:

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

[0020] Preferred:

[0021] The radial ejection mechanism comprises:

[0022] A torque shaft seat, the torque shaft seat is fixedly installed on the inner side of the middle layer roller sleeve body, a torque shaft is arranged on the torque shaft seat, a middle outer peripheral key of the torque shaft is connected with a driving gear, a rack slide is fixedly arranged on the inner side of the middle layer roller sleeve body, an ejection rack is slidably arranged on the rack slide, and the ejection rack is meshed with the driving gear.

[0023] Preferred:

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

[0025] Preferred:

[0026] A waist-shaped groove is provided on the rear side of the ejection rack, and a limiting bolt is arranged on the rack slide groove, and one end of the limiting bolt is located in the waist-shaped groove on the rear side of the ejection rack.

[0027] Preferred:

[0028] The locking mechanism comprises:

[0029] A locking shaft seat, the locking shaft seat is fixedly installed on the inner side of the middle layer roller sleeve body, a fixed shaft is arranged on the locking shaft seat, a fixing groove is opened in the middle part of the fixing shaft, a spiral spring is fixedly installed in the fixing 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, and the elastic band simultaneously binds and fixes the driving handle and the driving handle.

[0030] The present invention also discloses a method for using a multi-module roller sleeve with variable width, which comprises 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 ejector cylinders on both sides must be screwed in until they are fully inserted and just flush with the surface of the groove of the middle roller sleeve body. Insert the guide key and fix it on the middle roller sleeve body. The other axial ejection mechanism parts are connected according to the connection relationship.

[0032] S2: The radial ejection mechanism and the locking mechanism components are connected according to the connection relationship, and then the driving handle and the driving handle are pulled into the elastic band for fixing;

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

[0034] S4: When the roller sleeve module unit needs to be replaced, 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 driving handle, rotate the driving handle clockwise to make the axial ejection mechanism eject the corresponding proximal roller sleeve module unit, and then rotate the driving handle counterclockwise to make the axial ejection mechanism eject the corresponding distal roller sleeve module unit;

[0036] S6: Finally, put the driving handle back, pull out the driving handle, turn it counterclockwise, drive the ejection rack of the radial ejection mechanism to push the roller core inward, and then radially eject the middle layer roller sleeve module unit to be replaced. Put the new middle layer roller sleeve module unit into the replacement position, fix it on both sides through the embedding mechanism, and then completely fix it to the roller core through the clamping plate, locking screws and axial locking bolt pair.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. In the present invention, through the cooperation of the axial ejection mechanism, the radial ejection mechanism and the locking mechanism, not only the roller sleeve can be adjusted in the width direction by replacing the roller sleeve module, but also the severely worn area on the roller sleeve can be updated at a fixed point by replacing the roller sleeve module unit. The built-in axial ejection mechanism, radial ejection mechanism and locking mechanism of the roller sleeve make the replacement of the roller sleeve module unit very convenient, which is beneficial for the vertical mill to adjust the roller sleeve width and whether the middle roller sleeve module is equipped with an exhaust groove according to production requirements, and is also beneficial for the fixed-point inspection and replacement of the roller sleeve after wear;

[0039] 2. In the present invention, the axial ejection mechanism is simple through the cooperation of the threaded shaft, pinion, ejector cylinder and guide key provided in the axial ejection mechanism, and the ejection direction can be controlled by the forward and reverse rotation of the driving handle. At the same time, the axial ejection mechanism can also make the threaded shaft and the ejector cylinder completely hidden in the middle layer roller sleeve body, and have no influence on the embedded mechanism;

[0040] 3. In the present invention, the middle layer roller sleeve module unit to be replaced can be radially ejected in the narrow space between the roller sleeve and the roller core through the driving gear, rack slide groove and ejection rack arranged in the radial ejection mechanism, and the structure is simple and reliable;

[0041] 4. In the present invention, the scroll spring provided in the locking mechanism provides the execution power for locking, the structure is simple, and the elastic belt is designed in combination, so that the driving handle and the driving handle can be elastically locked and can absorb vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure assembly of a multi-module roller sleeve with variable width and a method of using the same in one embodiment of the present invention;

[0043] Figure 2 It is an exploded schematic diagram of the overall structure of a multi-module roller sleeve with variable width and a method for using the same in one embodiment of the present invention;

[0044] Figure 3 It is an exploded schematic diagram of the overall structure of a multi-module roller sleeve assembly in a variable width multi-module roller sleeve and a method for using the same in one embodiment of the present invention;

[0045] Figure 4 It is a schematic diagram of the overall structure of a middle layer roller cover module in a multi-module roller cover with variable width and a method for using the same in one embodiment of the present invention;

[0046] Figure 5 It is a schematic diagram of the overall structure of an axial ejection mechanism in a multi-module roller sleeve with variable width and a method for using the same in one embodiment of the present invention;

[0047] Figure 6 It is a schematic diagram of the overall structure of a radial ejection mechanism in a multi-module roller sleeve with variable width and a method for using the same in one embodiment of the present invention;

[0048] Figure 7 It is a schematic diagram of the overall structure of a locking mechanism in a multi-module roller sleeve with variable width and a method for using the same in one embodiment of the present invention;

[0049] Figure 8 It is a width schematic diagram of the overall structure of a multi-module roller sleeve with variable width and a method for using the same in one embodiment of the present invention.

[0050] In the figure:

[0051] 1. Clamping plate; 2. Axial locking bolt pair; 3. Multi-module roller sleeve assembly; 31. Nearside roller sleeve module; 32. Middle roller sleeve module; 321. Middle roller sleeve body; 322. Embedding mechanism; 323. Axial ejection mechanism; 3231. Pinion; 3232. Threaded shaft; 3233. Ejector cylinder; 3234. Guide key; 3235. Transmission gear; 3236. Large gear; 3237. Bearing seat; 3238. Driving handle; 3239. Rotating pin; 32310. Driving shaft; 32311, transmission shaft; 324, radial ejection mechanism; 3241, torque shaft seat; 3242, driving gear; 3243, rack slide; 3244, limit bolt; 3245, ejection rack; 3246, torque shaft; 3247, hinge pin; 3248, driving 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 DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Combined with Figure 1-8 In this embodiment, a variable width multi-module roller sleeve and a method for using the same include: 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 by 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 proximal roller sleeve module 31, a middle roller sleeve module 32 and a distal roller sleeve module 33. The multi-module roller sleeve assembly 3 is a roller sleeve multi-module unitization, axial multi-layer, radial multi-petal, the axial multi-layer divides the roller sleeve into multiple modules, and the radial multi-petal further divides the roller sleeve module into multiple roller sleeve module units, which is convenient for fixed-point maintenance and replacement of the roller sleeve after wear. The middle roller sleeve module 32 includes a middle roller sleeve body 321, an embedding mechanism 322, and an axial ejection mechanism 3 23. A radial ejection mechanism 324 and a locking mechanism 325; the embedded mechanisms 322 are distributed on both sides of the middle layer roller sleeve body 321 and the inner sides of the proximal roller sleeve module 31 and the distal roller sleeve module 33, and the locking between the modules is achieved through the mutual cooperation between the embedded mechanisms 322; the axial ejection mechanism 323 is arranged in the middle of the middle layer roller sleeve body 321, and is used to drive the axial ejection of any roller sleeve module unit on the proximal roller sleeve module 31 and the distal roller sleeve module 33; the radial ejection mechanism 324 is arranged in the middle of the middle layer roller sleeve body 321, and is used to drive the radial ejection of any roller sleeve module unit on the middle layer roller sleeve module 32; the locking mechanism 325 is installed between the axial ejection mechanism 323 and the radial ejection mechanism 324, and is used to fix the axial ejection mechanism 323 and the radial ejection mechanism 324. The embedding mechanism 322 is a "convex-concave" structure provided on both sides of the middle layer roller sleeve body 321, and the embedding mechanism 322 is provided on the inner sides of the proximal roller sleeve module 31 and the distal roller sleeve module 33 as a "convex-concave-convex" structure, which can be embedded in each other during the three-layer assembly to achieve circumferential fixation of the roller sleeve during operation.

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

[0055] In order to facilitate those skilled in the art to fully understand the specific structure and principle of the axial ejection mechanism 323, the axial ejection mechanism 323 is further described. In this embodiment, the axial ejection mechanism 323 includes: a pinion 3231 and a threaded shaft 3232. The pinion 3231 and the threaded shaft 3232 are both arranged in the central circular through hole of the middle layer roller sleeve body 321. Both ends of the threaded shaft 3232 are threadedly mounted with a top cylinder 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 layer roller sleeve body 321 and the outer wall of the top cylinder 3233 are both provided with a keyway. A guide key 3234 is arranged in the keyway in the circular through hole of the middle layer roller sleeve body 321. 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 with the circular through hole. A bearing seat 3237 is provided on the middle roller sleeve body 321, and a driving shaft 32310 is rotatably provided on the bearing seat 3237. A large gear 3236 is provided on the middle outer fixed sleeve of the driving 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 provided on the outer fixed sleeve of the transmission shaft 32311. The transmission gear 3235 is meshed with the large gear 3236 and the small gear 3231 at the same time; a driving handle 3238 is installed on the top of the driving shaft 32310 through a rotating pin 3239.

[0056] Specifically, pulling the driving handle 3238 drives the driving shaft 3210 connected thereto to rotate on the bearing seat 3237, and the driving shaft 3210 drives the large gear 3236 fixedly mounted on its periphery to rotate, and the large gear 3236 drives the transmission gear 3235 meshing therewith to rotate, and the transmission gear 3235 will drive the small gear 3231 meshing therewith to rotate, and the small gear 3231 drives the threaded shaft 3232 to rotate, and the threaded shaft 3232 drives the two ejector cylinders 3233 to slide upward along the guide key 3234, thereby ejecting the proximal roller sleeve module 31 through the ejector cylinder 3233, and rotating the driving handle 3238 in the opposite direction again to make the ejector cylinder 3233 slide downward along the guide key 3234, and the distal roller sleeve module 33 can be ejected.

[0057] In order to facilitate those skilled in the art to fully understand the specific structures and principles of the radial ejection mechanism 324 and the locking mechanism 325 , further descriptions of the radial ejection mechanism 324 and the locking mechanism 325 are given. In this embodiment, the radial ejection mechanism 324 includes: a torsion shaft seat 3241, the torsion shaft seat 3241 is fixedly installed on the inner side of the middle roller sleeve body 321, a torsion shaft 3246 is arranged on the torsion shaft seat 3241, the middle outer peripheral key of the torsion shaft 3246 is connected with the driving gear 3242, a rack slide groove 3243 is fixedly arranged on the inner side of the middle roller sleeve body 321, an ejection rack 3245 is slidably arranged on the rack slide groove 3243, and the ejection rack 3245 is meshed with the driving gear 3242; a driving handle 3248 is installed on the top end of the torsion shaft 3246 through a hinge pin 3247; a waist-shaped groove is opened on the rear side of the ejection rack 3245, a limiting bolt 3244 is arranged on the rack slide groove 3243, and one end of the limiting 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, and a fixed shaft 3253 is arranged on the locking shaft seat 3251. A fixing groove is opened in the middle part of the fixing shaft 3253, and 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, and the elastic band 3252 simultaneously binds and fixes the driving handle 3238 and the driving handle 3248.

[0058] Specifically, pulling the driving handle 3248 drives the torsion shaft 3246 connected thereto to rotate, so that the torsion shaft 3246 rotates on the torsion shaft seat 3241, and the torsion shaft 3246 drives the driving gear 3242 fixedly sleeved on its periphery to rotate, and the driving gear 3242 drives the ejection rack 3245 meshing therewith to slide in the rack slide groove 3243 fixedly installed on the inner side of the middle roller sleeve body 321, so that the ejection rack 3245 ejects the middle roller sleeve module 32 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 driving handle 3238 and the driving handle 3248. After the elastic band 3252 is loosened, the spiral spring 3254 is reset, so that the elastic band 3252 firmly binds and fixes the driving handle 3238 and the driving handle 3248.

[0059] Working principle: When the roller sleeve module unit needs to be replaced, 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, and then eject the corresponding near-side roller sleeve module 31 unit through the axial ejection mechanism 323, and then eject the corresponding far-side roller sleeve module 33 unit again through the axial ejection mechanism 323, and drive the radial ejection mechanism 324 to push the roller core 4 inward, and then radially eject the middle roller sleeve module 32 unit to be replaced. Put the new middle roller sleeve module 32 unit into the replacement position, so that its two sides are fixed by the embedding mechanism 322, and finally completely fixed to the roller core 4 by the clamping plate 1, locking screws 5 and axial locking bolt pair 2.

[0060] Pulling the driving handle 3238 drives the driving shaft 3210 connected thereto to rotate on the bearing seat 3237, and the driving shaft 3210 drives the large gear 3236 fixedly mounted on its periphery to rotate, and the large gear 3236 drives the transmission gear 3235 meshing therewith to rotate, and the transmission gear 3235 will drive the small gear 3231 meshing therewith to rotate, and the small gear 3231 drives the threaded shaft 3232 to rotate, and the threaded shaft 3232 drives the two ejector cylinders 3233 to slide upward along the guide key 3234, thereby ejecting the proximal roller sleeve module 31 through the ejector cylinder 3233, and rotating the driving handle 3238 in the opposite direction again to make the ejector cylinder 3233 slide downward along the guide key 3234, and the distal roller sleeve module 33 can be ejected.

[0061] Pulling the driving handle 3248 drives the torsion shaft 3246 connected thereto to rotate, so that the torsion shaft 3246 rotates on the torsion shaft seat 3241, and the torsion shaft 3246 drives the driving gear 3242 fixedly sleeved on its periphery to rotate, and the driving gear 3242 drives the ejection rack 3245 meshing therewith to slide in the rack slide groove 3243 fixedly installed on the inner side of the middle roller sleeve body 321, so that the ejection rack 3245 ejects the middle roller sleeve module 32 to be replaced. Pulling the elastic band 3252 causes the volute spring 3254 to rotate and stretch, thereby releasing the elastic band 3252 from binding and fixing the driving handle 3238 and the driving handle 3248. After the elastic band 3252 is loosened, the volute spring 3254 is reset, so that the elastic band 3252 firmly binds and fixes the driving handle 3238 and the driving handle 3248.

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

Claims

1. A multi-module roller cover with variable width, characterized in that: include: 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) by 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) comprises a proximal roller sleeve module (31), a middle roller sleeve module (32) and a distal roller sleeve module (33). The multi-module roller sleeve assembly (3) is a roller sleeve multi-module unit, 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 module into multiple roller sleeve module units, so as to facilitate the fixed-point maintenance and replacement of the roller sleeve after wear. The middle roller sleeve module (32) comprises a middle 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 mechanisms (322) are distributed on both sides of the middle roller sleeve body (321) and the inner sides of the proximal roller sleeve module (31) and the distal roller sleeve module (33), and locking between the modules is achieved through the mutual cooperation between the embedding mechanisms (322); The axial ejection mechanism (323) is arranged 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 proximal roller sleeve module (31) and the distal roller sleeve module (33); The radial ejection mechanism (324) is arranged in the middle of the middle layer roller sleeve body (321) and is used to drive the radial ejection of any roller sleeve module unit on the middle layer roller sleeve module (32); The locking mechanism (325) is installed between the axial ejection mechanism (323) and the radial ejection mechanism (324) and is used to fix the axial ejection mechanism (323) and the radial ejection mechanism (324).

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

3. A variable width multi-module roller cover according to claim 1, characterized in that: The axial ejection mechanism (323) comprises: A pinion (3231) and a threaded shaft (3232), wherein the pinion (3231) and the threaded shaft (3232) are both arranged in the central circular through hole of the middle layer roller sleeve body (321), both ends of the threaded shaft (3232) are threadedly mounted with a top cylinder (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 layer roller sleeve body (321) and the outer wall of the top cylinder (3233) are both provided with a keyway, and a guide key (3234) is provided in the keyway in the circular through hole of the middle layer roller sleeve body (321), and the guide key (3234) matches with the keyway of the top cylinder (3233).

4. A variable width multi-module roller cover according to claim 3, characterized in that: A rectangular groove is provided on the inner side of the middle layer roller sleeve body (321), and the rectangular groove is connected with the circular through hole. A bearing seat (3237) is provided on the middle layer roller sleeve body (321), and a driving shaft (32310) is rotatably provided on the bearing seat (3237). A large gear (3236) is provided on the middle peripheral fixed sleeve of the driving shaft (32310). A transmission shaft (32311) is provided in the rectangular groove on the inner side of the middle layer roller sleeve body (321), and a transmission gear (3235) is provided on the peripheral fixed sleeve of the transmission shaft (32311). The transmission gear (3235) is meshed with the large gear (3236) and the small gear (3231) at the same time.

5. A variable width multi-module roller cover according to claim 4, characterized in that: A driving handle (3238) is mounted on the top end of the driving shaft (32310) via a rotating pin (3239).

6. A variable width multi-module roller cover according to claim 5, characterized in that: The radial ejection mechanism (324) comprises: A torque shaft seat (3241), the torque shaft seat (3241) is fixedly installed on the inner side of the middle roller sleeve body (321), a torque shaft (3246) is arranged on the torque shaft seat (3241), a middle outer peripheral key of the torque shaft (3246) is connected with a driving gear (3242), a rack slide groove (3243) is fixedly arranged on the inner side of the middle roller sleeve body (321), an ejection rack (3245) is slidably arranged on the rack slide groove (3243), and the ejection rack (3245) is meshed with the driving gear (3242).

7. A variable width multi-module roller cover according to claim 6, characterized in that: A driving handle (3248) is mounted on the top end of the torque shaft (3246) via a hinge pin (3247).

8. A variable width multi-module roller cover according to claim 7, characterized in that: A waist-shaped groove is provided on the rear side of the ejection rack (3245), and a limiting bolt (3244) is provided on the rack slide groove (3243), and one end of the limiting bolt (3244) is located in the waist-shaped groove on the rear side of the ejection rack (3245).

9. A variable width multi-module roller cover according to claim 8, characterized in that: The locking mechanism (325) comprises: A locking shaft seat (3251), wherein the locking shaft seat (3251) is fixedly mounted on the inner side of the middle roller sleeve body (321), a fixed shaft (3253) is arranged on the locking shaft seat (3251), a fixing groove is opened in the middle of the fixing shaft (3253), a spiral spring (3254) is fixedly mounted in the fixing groove, an elastic band (3252) is fixedly mounted on the outer side of the spiral spring (3254) and the inner side of the middle roller sleeve body (321), and the elastic band (3252) simultaneously binds and fixes the driving handle (3238) and the driving handle (3248).

10. A method for using a variable width multi-module roller cover, used to operate a variable width multi-module roller cover according to any one of claims 1 to 9, characterized in that: The following steps are involved: 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, screw the ejector cylinders (3233) on both sides into place until they are fully inserted and flush with the surface of the groove of the middle roller sleeve body (321), insert the guide key (3234) and fix the guide key (3234) on the middle roller sleeve body (321), and connect the remaining parts of the axial ejection mechanism (323) according to the connection relationship; S2: The radial ejection mechanism (324) and the locking mechanism (325) components are connected according to a connection relationship, and then the driving handle (3238) and the driving handle (3248) are pulled into the elastic band (3252) for fixation; S3: The distal roller sleeve module (33), the middle roller sleeve module (32), and the proximal roller sleeve module (31) are fixed by means of an embedding mechanism (322), and then completely fixed to the roller core (4) by means of a clamping plate (1), a locking screw (5), and an axial locking bolt pair (2). S4: When the roller sleeve module unit needs to be replaced, the axial clamping plate (1) and the axial locking bolt pair (2) of the middle roller sleeve module (32) are first disassembled; S5: Then pull the elastic band (3252) of the locking mechanism (325), pull out the driving handle (3238), rotate the driving handle (3238) clockwise so that the axial ejection mechanism (323) ejects the corresponding proximal roller sleeve module (31) unit, and then rotate the driving handle (3238) counterclockwise so that the axial ejection mechanism (323) ejects the corresponding distal roller sleeve module (33) unit; S6: Finally, put the driving handle (3238) back, pull out the driving handle (3248), turn it counterclockwise, drive the ejection rack (3245) of the radial ejection mechanism (324) to push the roller core (4) inward, and then radially eject the middle layer roller cover module (32) unit to be replaced. Put the new middle layer roller cover module (32) unit into the replacement position, fix it on both sides through the embedding mechanism (322), and then completely fix it to the roller core (4) through the clamping plate (1), locking screws (5) and axial locking bolt pair (2).

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