A roller sleeve quick replacement mechanism and roller sleeve replacement method

Abstract

The invention relates to the technical field of bar rolling, and in particular to a roller sleeve quick replacement mechanism and a roller sleeve replacement method. When disassembling the worn roller sleeve, a tool is first used to clamp the worn roller sleeve, and then high-pressure oil is introduced from an oil hole into the connection between the roller sleeve and a main shaft body to expand the worn roller sleeve. While the high-pressure oil expands the worn roller sleeve, the main shaft body is slowly pulled out from the roller sleeve and a bearing mechanism, and then the worn roller sleeve is removed and replaced with a new roller sleeve. After replacing the new roller sleeve, the pulled-out main shaft body is inserted into the bearing mechanism and the roller sleeve. When inserting the main shaft body, high-pressure oil needs to be introduced from the oil hole to expand the new roller sleeve, and the entire main shaft body is slowly inserted into place, and then the bearing mechanism is locked by a locking end cover. The roller sleeve quick replacement mechanism with the structure is simple to operate, saves the time for changing the roller sleeve, can quickly realize the replacement of the roller sleeve, and improves the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bar rolling, and in particular to a roller sleeve quick replacement mechanism and a roller sleeve replacement method. Background Art

[0002] The roller sleeve on the existing main shaft is installed by thermal expansion interference fit. Each time the roller sleeve is worn during operation, the main shaft and the roller sleeve are not easy to disassemble, resulting in the inability to reuse the main shaft, causing a waste of resources. If the roller sleeve needs to be replaced directly, the roller sleeve replacement procedure is complicated and the roller sleeve replacement time is long. Therefore, in order to solve the problems existing in the prior art, the present invention discloses a roller sleeve quick replacement mechanism and a roller sleeve replacement method to solve the problems existing in the prior art. Summary of the invention

[0003] The present invention overcomes the shortcomings of the prior art and provides a roller sleeve quick replacement mechanism and a roller sleeve replacement method, especially having the feature of quick replacement of roller sleeves.

[0004] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0005] A roller sleeve quick replacement mechanism comprises at least a main shaft body and a roller sleeve connected to the main shaft body. The main shaft bodies at both ends of the roller sleeve are connected to bearing mechanisms. One end of the main shaft body is provided with an oil hole connected to the connection between the roller sleeve and the main shaft body, and the other end of the main shaft body is connected to a locking end cover.

[0006] Optionally, a through hole is opened in the axial middle part of the main shaft body and passes through the entire main shaft body, and the through hole includes a locking hole located at one end of the main shaft body, and a tightening hole with a hole diameter smaller than the hole diameter of the locking hole, one end of the tightening hole is connected to the locking hole, and the other end of the tightening hole passes through the other end of the main shaft body, and a pull rod is also arranged in the tightening hole, one end of the pull rod is connected to the locking end cover, and the other end of the pull rod extends into the locking hole, and the other end of the pull rod located in the locking hole is connected to the locking part, and the oil hole is located at the end of the main shaft body at one end of the locking hole.

[0007] Optionally, the bearing mechanism includes a first bearing, a second bearing and a third bearing, the first bearing and the second bearing are connected in sequence to one end of the roller sleeve, and the third bearing is connected to the main shaft body at the other end of the roller sleeve, the first bearing and the second bearing are located on the main shaft body at one end of the locking hole, and the third bearing is located on the main shaft body connected to one end of the locking end cover.

[0008] Optionally, an axial positioning mechanism is also connected to the main shaft body between the first bearing and the second bearing.

[0009] Optionally, the second bearing and the third bearing have the same structure, both are double-row cylindrical roller bearings, and the first bearing is an angular contact ball bearing.

[0010] Optionally, the oil hole includes an oil port and an oil channel, the oil port is located at the end of the main shaft body at one end of the locking hole, one end of the oil channel is connected to the oil port, and the other end of the oil channel extends to the middle position where the roller sleeve is axially connected to the main shaft body, and is connected to the middle position where it is connected to the main shaft body.

[0011] Optionally, the locking end cover is a flange end cover, a threaded hole is opened in the middle of the flange end cover, and one end of the pull rod is connected to the threaded hole on the flange end cover.

[0012] Optionally, the locking portion is a locking nut.

[0013] A roller sleeve replacement method of a roller sleeve quick replacement mechanism, comprising any one of the roller sleeve quick replacement mechanisms described above, comprising the following method

[0014] When the roller sleeve is worn and needs to be replaced, the worn roller sleeve needs to be disassembled first;

[0015] When disassembling the worn roller sleeve, first use a tool to clamp the worn roller sleeve, and then pass high-pressure oil through the oil hole to the connection between the roller sleeve and the main shaft body to expand the worn roller sleeve;

[0016] While the high-pressure oil expands the worn roller sleeve, slowly pull the main shaft body out of the roller sleeve and the bearing mechanism, then remove the worn roller sleeve and replace it with a new one;

[0017] After replacing the new roller sleeve, insert the withdrawn main shaft body into the bearing mechanism and roller sleeve;

[0018] When inserting the spindle body, high-pressure oil needs to be introduced from the oil hole to expand the new roller sleeve, and then the entire spindle body is slowly inserted into place.

[0019] Optionally, a roller sleeve replacement method of a roller sleeve quick replacement mechanism also includes the following method:

[0020] When it is necessary to disassemble the worn roller sleeve, first pull the pull rod within the physical yield strength of the pull rod through the pulling mechanism to create a gap between the locking part and the pull rod, then remove the locking part, pull out the pull rod, clamp the worn roller sleeve with a tool, and introduce high-pressure oil into the connection between the roller sleeve and the main shaft body through the oil hole at the end of the main shaft body to expand the worn roller sleeve, and finally pull the main shaft body out of the third bearing, the roller sleeve, the second bearing axial positioning mechanism and the first bearing, remove the worn roller sleeve, and replace it with a new roller sleeve;

[0021] When replacing a new roller sleeve, first insert the main shaft body, then insert the pull rod into the main shaft body, and connect the end of the pull rod to the locking end cover. When one end of the main shaft body enters the roller sleeve, pass high-pressure oil from the oil hole at the end of the main shaft body to expand the new roller sleeve, and slowly insert the entire main shaft body into place. After it is in place, tighten the locking part to axially position the entire replacement mechanism.

[0022] The beneficial effects of the present invention are:

[0023] Compared with the prior art, the present invention uses a tool to clamp the worn roller sleeve first when disassembling the worn roller sleeve, and then introduces high-pressure oil into the connection between the roller sleeve and the main shaft body from the oil hole to expand the worn roller sleeve. While the high-pressure oil expands the worn roller sleeve, the main shaft body is slowly pulled out from the roller sleeve and the bearing mechanism, and then the worn roller sleeve is removed and replaced with a new roller sleeve; after replacing the new roller sleeve, the pulled out main shaft body is inserted into the bearing mechanism and the roller sleeve, and when inserting the main shaft body, high-pressure oil needs to be introduced from the oil hole to expand the new roller sleeve, and the entire main shaft body 1 is slowly inserted into place, and then the bearing mechanism is locked by locking the end cover. The roller sleeve quick replacement mechanism of this structure is simple to operate to replace the roller sleeve, saves the time of changing the roller sleeve, can quickly realize the replacement of the roller sleeve, and improves the work efficiency.

[0024] The roller sleeve quick replacement mechanism of the structure disclosed in the present invention utilizes oil pressure to insert the roller sleeve onto the main shaft body. The improved structure enables the double-row cylindrical roller bearing to be closer to the roller sleeve, with better stress conditions and rigidity. It is also convenient to replace the roller sleeve after it is worn in the later stage, thereby greatly saving the main shaft body material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a schematic cross-sectional structure diagram of the roller sleeve quick replacement mechanism of the present invention.

[0027] In the figure: 1-main shaft body, 2-locking part, 3-first bearing, 4-axial positioning mechanism, 5-second bearing, 6-roller sleeve, 7-third bearing, 8-pull rod, 9-locking end cover. DETAILED DESCRIPTION

[0028] First of all, it should be noted that in various embodiments of the present invention, the terms involved are:

[0029] The main shaft body 1 is a carrier for carrying the roller sleeve 6 and can also make the entire roller sleeve 6 rotate.

[0030] The locking portion 2 is used to axially position and lock the entire roller sleeve quick-change mechanism through the pull rod 8.

[0031] The first bearing 3, the second bearing 5 and the third bearing 7 are all used to increase the bearing capacity of the entire roller sleeve quick replacement mechanism.

[0032] The axial positioning mechanism 4 is used to define the position between the first bearing 3 and the second bearing 5 .

[0033] The locking end cover 9 is used to axially position and lock the entire roller sleeve quick replacement mechanism together with the pull rod 8 and the locking part 2.

[0034] The roller sleeve quick replacement mechanism provided by the embodiment of the present invention will be described in detail below through several specific embodiments.

[0035] Embodiment 1:

[0036] Reference Figure 1 A roller sleeve quick replacement mechanism comprises at least a main shaft body 1 and a roller sleeve 6 connected to the main shaft body 1. The main shaft body 1 at both ends of the roller sleeve 6 is connected to a bearing mechanism. One end of the main shaft body 1 is provided with an oil hole connected to the connection between the roller sleeve 6 and the main shaft body 1, and the other end of the main shaft body 1 is connected to a locking end cover 9.

[0037] When the roller sleeve 6 is worn and needs to be replaced in the above embodiment, it is necessary to first disassemble the worn roller sleeve 6. When disassembling the worn roller sleeve 6, first use a tool to clamp the worn roller sleeve 6, and then pass high-pressure oil from the oil hole to the connection between the roller sleeve 6 and the main shaft body 1 to expand the worn roller sleeve 6; while the high-pressure oil expands the worn roller sleeve 6, slowly pull the main shaft body 1 out of the roller sleeve 6 and the bearing mechanism, and then remove the worn roller sleeve 6 and replace it with a new roller sleeve 6; after replacing the new roller sleeve 6, insert the withdrawn main shaft body 1 into the bearing mechanism and the roller sleeve 6. When inserting the main shaft body 1, high-pressure oil needs to be passed from the oil hole to expand the new roller sleeve 6, slowly insert the entire main shaft body 1 into place, and then lock the bearing mechanism by locking the end cover 9. The roller sleeve quick replacement mechanism of this structure is simple to operate, saves the time of changing the roller sleeve, can quickly realize the replacement of the roller sleeve, and improves the work efficiency.

[0038] The roller sleeve quick replacement mechanism disclosed in the present invention is provided with input torque by the main shaft body 1, and the roller sleeve is expanded by high-pressure oil so that the main shaft body 1 and the straightening roller sleeve are interference-connected.

[0039] Embodiment 2:

[0040] Reference Figure 1Furthermore, a through hole that runs through the entire main shaft body 1 is opened in the axial middle part of the main shaft body 1, and the through hole includes a locking hole located at one end of the main shaft body 1, and a tightening hole with a hole diameter smaller than the locking hole. One end of the tightening hole is connected to the locking hole, and the other end of the tightening hole runs through the other end of the main shaft body 1. A pull rod 8 is also arranged in the tightening hole, one end of the pull rod 8 is connected to the locking end cover 9, and the other end of the pull rod 8 extends into the locking hole, and the other end of the pull rod 8 located in the locking hole is connected to the locking part 2, and the oil hole is located at the end of the main shaft body 1 at one end of the locking hole.

[0041] In the above embodiment, when replacing the new roller sleeve 6, it is necessary to first pull the pull rod 8 within the physical yield strength of the pull rod 8 through the pulling mechanism to create a gap between the locking portion 2 in the locking hole and the pull rod 8, then remove the locking portion 2 in the locking hole, pull out the pull rod 8 in the tightening hole, use a tool to clamp the worn roller sleeve 6, and introduce high-pressure oil into the connection between the roller sleeve 6 and the main shaft body 1 through the oil hole at the end of the main shaft body 1 to expand the worn roller sleeve 6. Finally, pull out the main shaft body 1, remove the worn roller sleeve 6, and replace it with a new roller sleeve 6.

[0042] After replacing the new roller sleeve 6, first insert it into the main shaft body 1, and then insert the locking hole of the pull rod 8 into the locking hole. The end of the pull rod 8 is threadedly connected with the locking end cover 9 at the end of the main shaft body 1. When one end of the main shaft body 1 enters the roller sleeve 6, high-pressure oil is introduced from the oil hole at the end of the main shaft body 1 to expand the new roller sleeve 6, and the entire main shaft body 1 is slowly inserted into place. After it is in place, tighten the locking part 2 to axially position the entire replacement mechanism, thereby realizing the rapid replacement of the worn roller sleeve 6.

[0043] The pulling mechanism described in this embodiment may adopt a hydraulic puller to pull the pull rod 8 and reduce the original pre-tightening force of the pull rod 8 .

[0044] Further, the oil hole includes an oil port and an oil channel, the oil port is located at the end of the main shaft body 1 at one end of the locking hole, one end of the oil channel is connected to the oil port, and the other end of the oil channel extends to the middle position of the roller sleeve 6 axially connected to the main shaft body 1, and is connected to the middle position connected to the main shaft body 1. After the high-pressure oil is introduced, it is ensured that the roller sleeve 6 can be stretched open, which is convenient for extraction or insertion into the main shaft body 1, and convenient for replacement of the roller sleeve 6.

[0045] Further, the locking end cover 9 is a flange end cover, and a threaded hole is opened in the middle of the flange end cover, and one end of the tie rod 8 is connected to the threaded hole on the flange end cover. The end of the tie rod 8 is connected to the threaded hole in the middle of the flange end cover through the threaded hole of the flange end cover, and then after the roller sleeve 6 is replaced, one end of the tie rod 8 is connected to the flange end cover, and the other end is screwed by the locking part 2 to realize the axial positioning and locking of the entire replacement mechanism.

[0046] The locking part 2 is a locking nut. The locking nut is screwed to further tighten the pull rod 8, thereby realizing the axial positioning and locking of the entire roller sleeve quick replacement mechanism.

[0047] Embodiment 3:

[0048] Reference Figure 1 Further, the bearing mechanism includes a first bearing 3, a second bearing 5 and a third bearing 7. One end of the roller sleeve 6 is connected with the first bearing 3 and the second bearing 5 in sequence, and the third bearing 7 is connected to the main shaft body 1 at the other end of the roller sleeve 6. The first bearing 3 and the second bearing 5 are located on the main shaft body 1 at one end of the locking hole, and the third bearing 7 is located on the main shaft body 1 connected to the locking end cover 9.

[0049] Furthermore, the locking end cover 9 is connected to the third bearing 7 .

[0050] Furthermore, an axial positioning mechanism 4 is connected to the main shaft body 1 between the first bearing 3 and the second bearing 5 .

[0051] Furthermore, the second bearing 5 and the third bearing 7 have the same structure, both of which are double-row cylindrical roller bearings, and the first bearing 3 is an angular contact ball bearing.

[0052] In the above implementation, the first bearing 3 and the second bearing 5 are connected to the main shaft body 1 at one end of the roller sleeve 6 close to the main shaft body 1 with an oil hole, and the third bearing 7 is connected to the end of the roller sleeve 6 close to the locking end cover 9. The locking end cover 9 is connected to the third bearing 7, and the axial positioning and locking of the entire roller sleeve quick replacement mechanism is achieved by tightening the pull rod 8, so that the first bearing 3, the second bearing 5, the roller sleeve 6 and the third bearing 7 are tighter, without gaps and looseness. The main shaft body 1 between the first bearing 3 and the second bearing 5 is also connected with an axial positioning mechanism 4 to achieve axial positioning between the first bearing 3 and the second bearing 5, wherein the roller sleeve 6 is subjected to radial force through a double-row cylindrical bearing and to axial force through an angular contact ball bearing. During assembly, the roller sleeve 6 is expanded by high-pressure oil, and the flange end cover, i.e., the locking end cover 9, is screwed into the pull rod 8, and the pull rod 8 is tightened. After being pulled into place, it is locked with a locking nut, and the roller sleeve 6 is quickly replaced. The roller sleeve quick replacement mechanism of this structure utilizes oil pressure to install the roller sleeve 6 onto the main shaft body 1. The improved structure makes the double-row cylindrical roller bearing closer to the roller sleeve 6, with better stress conditions and rigidity. It is also convenient to replace the roller sleeve 6 after it is worn, which greatly saves the main shaft body material.

[0053] Embodiment 4:

[0054] A roller sleeve replacement method of a roller sleeve quick replacement mechanism, comprising a roller sleeve quick replacement mechanism according to any one of the above embodiments, comprising the following method

[0055] When the roller sleeve 6 is worn and needs to be replaced, the worn roller sleeve 6 needs to be disassembled first;

[0056] When disassembling the worn roller sleeve 6, first use a tool to clamp the worn roller sleeve 6, and then pass high-pressure oil from the oil hole to the connection between the roller sleeve 6 and the main shaft body 1 to expand the worn roller sleeve 6;

[0057] While the high-pressure oil expands the worn roller sleeve 6, slowly pull the main shaft body 1 out of the roller sleeve 6 and the bearing mechanism, then remove the worn roller sleeve 6 and replace it with a new roller sleeve 6;

[0058] After replacing the new roller sleeve 6, the withdrawn main shaft body 1 is inserted into the bearing mechanism and the roller sleeve 6;

[0059] When inserting the main shaft body 1, high-pressure oil needs to be introduced from the oil hole to expand the new roller sleeve 6, and the entire main shaft body 1 is slowly inserted into place.

[0060] A further roller sleeve replacement method of the roller sleeve quick replacement mechanism also includes the following method

[0061] When it is necessary to disassemble the worn roller sleeve 6, first pull the tie rod 8 within the physical yield strength of the tie rod 8 through the pulling mechanism to generate a gap between the locking portion 2 and the tie rod 8, then remove the locking portion 2, pull out the tie rod 8, use a tool to clamp the worn roller sleeve 6, and introduce high-pressure oil into the connection between the roller sleeve 6 and the main shaft body 1 through the oil hole at the end of the main shaft body 1 to expand the worn roller sleeve 6, and finally pull the main shaft body 1 out of the third bearing 7, the roller sleeve 6, the second bearing 5 axial positioning mechanism 4 and the first bearing 3, remove the worn roller sleeve 6, and replace it with a new roller sleeve 6;

[0062] When replacing a new roller sleeve 6, first insert the main shaft body 1, then insert the pull rod 8 into the main shaft body 1, and connect the end of the pull rod 8 to the locking end cover 9. When one end of the main shaft body 1 enters the roller sleeve 6, introduce high-pressure oil from the oil hole at the end of the main shaft body 1 to expand the new roller sleeve 6, and slowly insert the entire main shaft body 1 into place. After it is in place, tighten the locking part 2 to axially position the entire replacement mechanism.

[0063] Furthermore, when high-pressure oil is introduced, the oil pressure introduced in actual use is 300-500 MPa to achieve the disassembly and assembly of the roller sleeve 6 on the main shaft body 1. The oil pressure is just right when 400 MPa is used, which shortens the disassembly and assembly time and saves resources.

[0064] The roller sleeve replacement method of the roller sleeve quick replacement mechanism described above realizes the rapid replacement of the roller sleeve, and the roller sleeve is inserted into the main shaft body by oil pressure. The improved structure makes the double-row cylindrical roller bearing closer to the roller sleeve, and the stress condition and rigidity are better. In addition, it is convenient to replace the roller sleeve after it is worn in the later stage, which saves the main shaft body material and improves the work efficiency.

[0065] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the knowledge scope of ordinary technicians in the field, various changes can be made without departing from the purpose of the present invention, which are all within the protection scope of this technology.

[0066] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0067] The technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A roller sleeve replacement method of a roller sleeve quick replacement mechanism, characterized in that: Includes the following methods When the roller sleeve (6) is worn and needs to be replaced, the worn roller sleeve (6) needs to be disassembled first; When disassembling the worn roller sleeve (6), firstly, a tool is used to clamp the worn roller sleeve (6), and then high-pressure oil is introduced into the connection between the roller sleeve (6) and the main shaft body (1) through the oil hole to expand the worn roller sleeve (6); While the high-pressure oil expands the worn roller sleeve (6), the main shaft body (1) is slowly pulled out from the roller sleeve (6) and the bearing mechanism, and then the worn roller sleeve (6) is removed and replaced with a new roller sleeve (6); After replacing the new roller sleeve (6), the detached main shaft body (1) is inserted into the bearing mechanism and the roller sleeve (6); when inserting the main shaft body (1), high-pressure oil is introduced from the oil hole to expand the new roller sleeve (6), and the entire main shaft body (1) is slowly inserted into place; When it is necessary to remove the worn roller sleeve (6), firstly, the pulling mechanism is used to pull the pull rod (8) within the physical yield strength of the pull rod (8) so that a gap is generated between the locking portion (2) and the pull rod (8), then the locking portion (2) is removed, the pull rod (8) is pulled out, the worn roller sleeve (6) is clamped with a tool, and high-pressure oil is introduced into the connection between the roller sleeve (6) and the main shaft body (1) through the oil hole at the end of the main shaft body (1) to expand the worn roller sleeve (6), and finally the main shaft body (1) is pulled out from the third bearing (7), the roller sleeve (6), the second bearing (5) axial positioning mechanism (4) and the first bearing (3), the worn roller sleeve (6) is removed, and a new roller sleeve (6) is replaced; When replacing a new roller sleeve (6), first insert the main shaft body (1), then insert the tie rod (8) into the main shaft body (1), and connect the end of the tie rod (8) to the locking end cover (9). After one end of the main shaft body (1) enters the roller sleeve (6), high-pressure oil is introduced from the oil hole at the end of the main shaft body (1) to expand the new roller sleeve (6), and then slowly insert the entire main shaft body (1) into place. After it is in place, tighten the locking part (2) to position the entire replacement mechanism axially. The roller sleeve quick replacement mechanism comprises at least a main shaft body (1) and a roller sleeve (6) connected to the main shaft body (1). The main shaft body (1) at both ends of the roller sleeve (6) is connected to a bearing mechanism. One end of the main shaft body (1) is provided with an oil hole connected to the connection between the roller sleeve (6) and the main shaft body (1). The other end of the main shaft body (1) is connected to a locking end cover (9). A through hole penetrating the entire spindle body (1) is provided in the axial middle portion of the spindle body (1), the through hole comprising a locking hole located at one end of the spindle body (1), and a tensioning hole having a hole diameter smaller than that of the locking hole, one end of the tensioning hole being connected to the locking hole, and the other end of the tensioning hole penetrating to the other end of the spindle body (1), a pull rod (8) is also provided in the tensioning hole, one end of the pull rod (8) is connected to the locking end cover (9), the other end of the pull rod (8) extends into the locking hole, the other end of the pull rod (8) located in the locking hole is connected to the locking portion (2), and the oil hole is located at the end of the spindle body (1) at one end of the locking hole; The oil hole comprises an oil port and an oil channel, wherein the oil port is located at the end of the main shaft body (1) at one end of the locking hole, one end of the oil channel is connected to the oil port, and the other end of the oil channel extends to the middle position where the roller sleeve (6) is axially connected to the main shaft body (1), and is connected to the middle position where the main shaft body (1) is connected; The bearing mechanism comprises a first bearing (3), a second bearing (5) and a third bearing (7); one end of the roller sleeve (6) is connected to the first bearing (3) and the second bearing (5) in sequence; the other end of the roller sleeve (6) is connected to the main shaft body (1) with the third bearing (7); the first bearing (3) and the second bearing (5) are located on the main shaft body (1) at one end of the locking hole; the third bearing (7) is located on the main shaft body (1) at one end connected to the locking end cover (9); An axial positioning mechanism (4) is also connected to the main shaft body (1) between the first bearing (3) and the second bearing (5).

2. The roller sleeve replacement method of the roller sleeve quick replacement mechanism according to claim 1 is characterized by: The second bearing (5) and the third bearing (7) have the same structure and are both double-row cylindrical roller bearings, and the first bearing (3) is an angular contact ball bearing.

3. The roller sleeve replacement method of the roller sleeve quick replacement mechanism according to claim 1 is characterized by: The locking end cover (9) is a flange end cover, a threaded hole is opened in the middle of the flange end cover, and one end of the pull rod (8) is connected to the threaded hole on the flange end cover.

4. The roller sleeve replacement method of the roller sleeve quick replacement mechanism according to claim 1 is characterized by: The locking portion (2) is a locking nut.

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