Online roll changing device and online roll changing method for sealing box

Abstract

The invention discloses an online roll changing device for a sealing box and an online roll changing method in the technical field of glass production equipment. The online roll changing device comprises a rack, and a transverse through groove is formed in the rack; the top end of the supporting hoof foot is fixedly connected with the rack; the connecting frame is accommodated in the transverse through groove; the static hoop assembly is fixedly connected with one end of the connecting frame; the movable hoop assembly is detachably and fixedly connected with the other end of the connecting frame; the auxiliary walking assembly is arranged under the other end of the connecting frame and fixedly connected with the connecting frame; the rotating roller assembly is arranged at one end of the connecting frame and is fixedly connected with the connecting frame; the walking wheels are installed on the two longitudinal sides of the static hoop assembly and the movable hoop assembly, and the distance between the two walking wheels is larger than the longitudinal groove width of the transverse through groove. The online roller replacing device is simple in structure and easy to operate, the roller replacing time is greatly shortened, and a large amount of labor cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of glass production equipment, and in particular to an online roller changing device and an online roller changing method for a sealing box. Background Art

[0002] The sealing box is one of the important equipment in the float glass production line. Its main function is to transfer the glass ribbon with a temperature of about 600 degrees drawn from the tin bath into the annealing kiln. It can not only seal the tin bath outlet, but also remove the tin slag on the lower surface of the glass brought out from the tin bath to prevent the harmful gas in the tin bath from entering the annealing kiln. However, in the glass production process, when the scum and tin ash brought out by the glass ribbon from the tin bath hit the transition roller, it will scratch the surface of the transition roller, which will affect the quality of the lower surface of the glass. In order to ensure the molding quality of the glass, the transition roller needs to be replaced.

[0003] Some domestic manufacturers use the method of smashing the head to cut off the glass liquid, and then replace the transition roller. After the roller is replaced, the head is introduced again. This roller replacement method is not only cumbersome and time-consuming, but also causes a large loss to the glass production. Some manufacturers use roller unit roller replacement. This method not only has a large amount of preparation work, but the roller unit is relatively bulky and difficult to move. The roller replacement time is long, and the ambient temperature here is high, which is extremely unfavorable for the workers' operation.

[0004] Therefore, how to realize the convenient replacement of the transition roller in the sealing box has become a technical problem to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide an online roller changing device for a sealing box to solve the technical problem of inconvenient replacement of transition rollers inside the existing sealing box.

[0006] The technical solution adopted by the present invention is: an online roller changing device for a sealing box, comprising:

[0007] A frame, wherein a transverse through slot is formed on the frame;

[0008] A supporting shoe foot, the top end of which is fixedly connected to the frame and capable of adjusting the vertical height of the frame;

[0009] A connecting frame, the connecting frame is accommodated in the transverse through groove along the transverse direction;

[0010] A static clamp assembly, wherein the static clamp assembly is fixedly connected to one end of the connecting frame;

[0011] A dynamic hoop assembly, wherein the dynamic hoop assembly is detachably fixedly connected to the other end of the connecting frame;

[0012] An auxiliary walking assembly, which is arranged just below the other end of the connecting frame and is fixedly connected to the connecting frame;

[0013] A roller assembly, wherein the roller assembly is disposed at one end of the connecting frame and is fixedly connected to the connecting frame;

[0014] The running wheels are installed on both longitudinal sides of the static clamp assembly and the dynamic clamp assembly, and the wheel spacing between the two running wheels is greater than the longitudinal slot width of the transverse through slot.

[0015] Preferably, the static clamp assembly and the dynamic clamp assembly both include an upper clamp, a lower mounting frame and a limiting guide wheel, the bottom of the upper clamp is fixedly connected to the top of the lower mounting frame, the running wheel is rotatably connected to the top of the lower mounting frame, the limiting guide wheel is rotatably connected to the bottom of the lower mounting frame, the limiting guide wheel is accommodated in a transverse through groove, and the axial direction of the running wheel is perpendicular to the axial direction of the limiting guide wheel.

[0016] Preferably, the rotating roller assembly includes a base, a transmission motor and a connecting plate, one end of the connecting plate is fixedly connected to the lower mounting frame of the static clamp assembly, the other end of the connecting plate is fixedly connected to the base, the transmission motor is fixedly installed above the base, and the transmission motor is used to drive the transition roller to rotate temporarily.

[0017] Preferably, the frame includes a frame body and casters, a transverse through groove is formed on the top of the frame body, and casters are installed on the bottom of the frame body.

[0018] Preferably, a longitudinal through hole communicating with the transverse through groove is formed on the frame, and an anti-overturning rod is installed in the longitudinal through hole.

[0019] Preferably, one end of the frame is fixedly connected with a limit plate which forms a stopper with the roller assembly.

[0020] Preferably, the auxiliary walking assembly includes a support plate and a follower wheel, the top end of the support plate is vertically fixedly connected to the connecting frame, and the bottom end of the support plate is rotatably connected to the follower wheel.

[0021] The second object of the present invention is to provide an online roller changing method for a sealing box, wherein the online roller changing method uses the above-mentioned online roller changing device for a sealing box, and the online roller changing method comprises the following steps:

[0022] Step 1: Remove the related equipment under the old roller;

[0023] Step 2: Move the online roller changing device to the operating side of the sealing box, and align the transverse through groove on the frame with the U-shaped groove of the sealing box;

[0024] Step 3: Move the connecting frame laterally and make one end of the connecting frame pass through the transmission side of the sealing box;

[0025] Step 4: Fix the dynamic hoop assembly to the connecting frame, and support the dynamic hoop assembly through the extension frame temporarily installed on the sealing box;

[0026] Step 5: Move the old roller downward, support and fix both ends of the old roller through the dynamic clamp assembly and the static clamp assembly, and connect the rotating roller assembly to the operating end of the old roller;

[0027] Step 6: Move the connecting frame horizontally and remove the old roller from the sealing box while rotating;

[0028] Step 7: Reverse the process to install the new roller.

[0029] Beneficial effects of the present invention:

[0030] The present invention adopts a pull-and-pull disassembly and assembly method, a transverse through groove matched with the U-shaped groove of the sealing box is formed on the top of the frame, and a connecting frame, a dynamic clamp assembly, a static clamp assembly and a rotating roller assembly that can move laterally back and forth are installed on the top of the frame. After the connecting frame is moved laterally and inserted into the U-shaped groove of the sealing box, the dynamic clamp assembly and the static clamp assembly can be tightly connected with the two ends of the transition roller to achieve support and fixation of the two ends of the transition roller. With the transmission connection between the rotating roller assembly and the transition roller, the transition roller can be moved out and rotated at the same time, which not only realizes the convenient and fast disassembly and assembly of the transition roller, but also makes the transition roller evenly heated during the disassembly and assembly process, thereby improving the replacement efficiency and replacement quality of the transition roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front view of the online roller changing device for the sealing box of the present invention;

[0032] Figure 2 It is a structural schematic diagram of an online roller changing device for a sealing box of the present invention;

[0033] Figure 3 for Figure 2 AA view in;

[0034] Figure 4 This is a reference diagram of the use status of the online roller changing device for the sealing box of the present invention.

[0035] Description of reference numerals in the figures:

[0036] 1. Frame; 2. Supporting shoe feet; 3. Connecting frame; 4. Static clamp assembly; 5. Dynamic clamp assembly; 6. Auxiliary walking assembly; 7. Roller assembly; 8. Traveling wheel; 9. Anti-overturning rod; 10. Limiting plate; 11. Upper clamp; 12. Lower mounting frame; 13. Limiting guide wheel; 14. Base; 15. Transmission motor; 16. Connecting plate; 17. Frame; 18. Caster; 19. Horizontal through groove; 20. Support plate; 21. Follower wheel; 22. Transition roller; 23. Sealing box; 24. Extension frame; 25. Coupling. DETAILED DESCRIPTION

[0037] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0041] Examples, such as Figure 1-Figure 4 As shown, an online roller changing device for a sealing box is used to perform online replacement operations on the transition roller 22 that needs to be replaced in the sealing box 23; the online roller changing device includes: a frame 1, a supporting shoe foot 2, a connecting frame 3, a static clamp assembly 4, a dynamic clamp assembly 5, an auxiliary walking assembly 6, a rotating roller assembly 7 and a running wheel 8.

[0042] A transverse through slot 19 with an opening at the top is formed on the top of the frame 1 , and the transverse through slot 19 passes through the frame 1 in the transverse direction.

[0043] There are multiple supporting feet 2 , the top ends of the multiple supporting feet 2 are fixedly connected to the frame 1 , and the supporting feet 2 can adjust the vertical height of the frame 1 .

[0044] The connecting frame 3 is accommodated in the transverse through slot 19 along the transverse direction.

[0045] The static clamp assembly 4 is fixedly connected to one end of the connecting frame 3 .

[0046] The dynamic hoop assembly 5 is detachably fixedly connected to the other end of the connecting frame 3 .

[0047] The auxiliary walking assembly 6 is located directly below the other end of the connecting frame 3 , and the auxiliary walking assembly 6 is fixedly connected to the connecting frame 3 . The auxiliary walking assembly 6 can vertically support the lateral movement of the connecting frame 3 in the sealing box 23 .

[0048] The roller assembly 7 is disposed at one end of the connecting frame 3 and is fixedly connected to the connecting frame 3 . The roller assembly 7 can be transmission-connected to the operating end of the transition roller 22 and drive the transition roller 22 to rotate.

[0049] There are multiple running wheels 8, which are installed on both longitudinal sides of the static clamp assembly 4 and the dynamic clamp assembly 5, and the wheel spacing between the two running wheels 8 is greater than the longitudinal slot width of the transverse through slot 19, so that the two running wheels 8 are located one by one above the frame 1 on both longitudinal sides of the transverse channel 19.

[0050] The present invention adopts a pull-out disassembly and assembly method, a transverse through groove 19 matched with the U-shaped groove of the sealing box 23 is formed on the top of the frame 1, and a connecting frame 3, a dynamic clamp assembly 5, a static clamp assembly 4 and a roller assembly 7 that can move laterally back and forth are installed on the top of the frame 1. After the connecting frame 3 is moved laterally and inserted into the U-shaped groove of the sealing box 23, the dynamic clamp assembly 5 and the static clamp assembly 4 can be tightly connected with the two ends of the transition roller 22 to achieve support and fixation of the two ends of the transition roller 22. With the transmission connection between the roller assembly 7 and the transition roller 22, the transition roller 22 can be moved out while the transition roller 22 is rotated, which not only realizes the convenient and quick disassembly and assembly of the transition roller 22, but also makes the transition roller 22 evenly heated during the disassembly and assembly process, which can prevent the transition roller 22 from deforming, and effectively improves the replacement efficiency and replacement quality of the transition roller 22.

[0051] Specific embodiment 1, as Figure 1-Figure 4 As shown, an online roller changing device for a sealing box is used to perform online replacement operations on the transition roller 22 that needs to be replaced in the sealing box 23; the online roller changing device includes: a frame 1, a supporting shoe foot 2, a connecting frame 3, a static clamp assembly 4, a dynamic clamp assembly 5, an auxiliary walking assembly 6, a rotating roller assembly 7 and a running wheel 8.

[0052] The frame 1 includes a frame body 17 and casters 18. The frame body 17 is welded by steel plates and steel beams, and a transverse through slot 19 with an open top is formed on the top of the frame body 17. The transverse through slot 19 runs through the entire frame 1 in the transverse direction. There are multiple casters 18, and multiple casters 18 are fixedly installed at the bottom of the frame body 17, so that the frame 1 can move horizontally on the workshop floor.

[0053] There are multiple supporting feet 2, which are arranged in a matrix around the frame 1, and the top ends of the supporting feet 2 are fixedly connected to the frame 1. The supporting feet 2 can be extended and retracted to adjust the vertical height of the frame 1, so that the transverse through groove 19 on the top of the frame 1 is aligned with the U-shaped groove of the sealing box 23.

[0054] The connecting frame 3 is accommodated in the transverse through slot 19 along the transverse direction.

[0055] The static hoop assembly 4 is fixedly connected to one end of the connecting frame 3, and the static hoop assembly 4 includes an upper hoop 11, a lower mounting frame 12 and a limiting guide wheel 13. The upper hoop 11 is located directly above the transverse through slot 19, and the limiting guide wheel 13 is located in the transverse through slot 19. The lower mounting frame 12 is arranged in the vertical direction, and the bottom of the upper hoop 11 is fixedly connected to the top of the lower mounting frame 12; the two running wheels 8 are located one by one on the longitudinal sides of the lower mounting frame 12, and the two running wheels 8 are rotatably connected to the top of the lower mounting frame 12. The two running wheels 8 are in contact with the upper side surfaces of the frame bodies 17 on the longitudinal sides of the transverse through slot 19, so as to drive the connecting frame 3 and the static hoop assembly 4 to move back and forth laterally through the rotation of the running wheels 8. The limiting guide wheel 13 is accommodated in the transverse through groove 19, and the limiting guide wheel 13 is rotatably connected to the bottom of the lower mounting frame 12, and the axial direction of the running wheel 8 is perpendicular to the axial direction of the limiting guide wheel 13, so as to longitudinally limit the static clamp assembly 4 during the transverse movement, and prevent the transition roller 22 from overturning during the movement.

[0056] The dynamic hoop assembly 5 is detachably fixedly connected to the other end of the connecting frame 3 , and the specific structure of the dynamic hoop assembly 5 is the same as the specific structure of the static hoop assembly 4 .

[0057] The auxiliary walking assembly 6 is located directly below the other end of the connecting frame 3, and the auxiliary walking assembly 6 is located in the transverse through groove 19. The auxiliary walking assembly 6 is fixedly connected to the connecting frame 3, and the auxiliary walking assembly 6 can vertically support the transverse movement of the connecting frame 3 in the sealing box 23.

[0058] Specifically, the auxiliary walking assembly 6 includes a support plate 20 and a follower wheel 21. The support plate 20 is vertically arranged in the transverse through groove 19, and the top end of the support plate 20 is vertically fixedly connected to the connecting frame 3, and the bottom end of the support plate 20 is rotatably connected to the follower wheel 21.

[0059] It should be noted that the lower surface of the auxiliary walking assembly 6 is slightly higher than the depth of the U-shaped groove in the sealing box 23 to prevent the connecting frame 3 from being over-positioned under the guidance of the running wheel 8 when the dynamic clamp assembly 5 and the static clamp assembly 4 are installed on the transition roller 22.

[0060] The roller assembly 7 is disposed at one end of the connecting frame 3 and is fixedly connected to the connecting frame 3 . The roller assembly 7 can be transmission-connected to the operating end of the transition roller 22 and drive the transition roller 22 to rotate.

[0061] Specifically: the roller assembly 7 includes a base 14, a transmission motor 15 and a connecting plate 16, the connecting plate 16 is arranged in the transverse direction, and one end of the connecting plate 16 is fixedly connected to the lower mounting frame 12 of the static clamp assembly 4, and the other end of the connecting plate 16 is fixedly connected to the base 14; the transmission motor 15 is fixedly installed above the base 14, and the transmission motor 15 can be connected to the transition roller 22 through the coupling 25 and drive the transition roller 22 to rotate temporarily, so that the transition roller 22 keeps rotating during the process of leaving the sealing box 23 or entering the sealing box 23, so as to prevent the transition roller 22 from being deformed due to uneven heating.

[0062] Preferably, at least one longitudinal through hole (not shown in the figure) is formed on the frame body 17, and the longitudinal through hole passes through the entire frame 1 and the connecting frame 3 in the longitudinal direction, and the longitudinal through hole is connected to the transverse through groove 19; an anti-overturning rod 9 is installed in the longitudinal through hole, and the anti-overturning rod 9 passes through the connecting frame 3 in the transverse through groove 19, so that the connecting frame 3 is fixedly connected to the frame 1 in the vertical direction, which can effectively prevent the transition roller 22 from overturning.

[0063] More preferably, a limit plate 10 is fixedly connected to one end of the frame body 17, and the limit plate 10 blocks one end of the transverse through groove 19, so that when the roller assembly 7 follows the transverse movement of the transition roller 22, the roller assembly 7 can form a stopper cooperation with the limit plate 10, thereby preventing the connecting frame 3 from moving out of the transverse through groove 19.

[0064] Examples, such as Figure 4 As shown, an online roller changing method for a sealing box, the online roller changing method uses the above-mentioned online roller changing device for a sealing box; the roller changing method comprises the following steps:

[0065] Preparation: When a transition roller 22 needs to be replaced, the width of the glass plate is appropriately reduced, the thickness of the glass plate is increased, and the heights of the remaining two transition rollers 22 are raised.

[0066] Step 1: Remove the related equipment under the old roller.

[0067] Specifically, the counterweight device under the old roller (the transition roller 22 to be replaced) is removed, the graphite block and the leaf spring are pulled out, and the clutch of the transition roller 22 to be replaced is disconnected.

[0068] Step 2: Move the online roller changing device to the operating side of the sealing box 23 , and align the transverse through groove 19 on the frame 1 with the U-shaped groove of the sealing box 23 .

[0069] Specifically: mark the center line of the transition roller 22 inside the sealing box 23 on the wall on the operating side of the factory building or the workshop floor to facilitate the placement of the online roller changing device; first move the online roller changing device to the desired position by rotating the casters 18, align the transverse through groove 19 on the top of the frame 1 of the online roller changing device with the U-shaped groove of the sealing box 23, and then use the supporting shoe foot 2 to make the upper surface of the frame 1 consistent with the height of the upper surface of the U-shaped groove and the depth of the U-shaped groove, that is, the top and bottom of the transverse through groove 19 are coplanar with the top and bottom of the U-shaped groove.

[0070] Step 3: Move the connecting frame 3 laterally and make one end of the connecting frame 3 pass through the transmission side of the sealing box 23 .

[0071] Specifically, the connecting frame 3 is moved laterally through the auxiliary traveling assembly 6 and the traveling wheels 8 and enters the U-shaped groove of the sealing box 23 until one end of the connecting frame 3 passes through the sealing box 23 .

[0072] Step 4: The dynamic hoop assembly 5 is fixedly connected to the connecting frame 3 , and the dynamic hoop assembly 5 is supported by the extension frame 24 temporarily installed on the sealing box 23 .

[0073] Specifically, the dynamic hoop assembly 5 is fixedly connected to one end of the connecting frame 3 that passes through the sealing box 23, and the extension frame 24 is temporarily fixedly installed on the box body on the transmission side of the sealing box 23. The upper surface of the extension frame 24 is coplanar with the top surface of the frame 1, so that the running wheel 8 connected to the dynamic hoop assembly 5 is in contact with the upper surface of the extension frame 24, which is used to support the dynamic hoop assembly 5.

[0074] Step 5: Move the old roller downward, support and fix the two ends of the old roller by the dynamic clamp assembly 5 and the static clamp assembly 4, and connect the rotating roller assembly 7 to the operating end of the old roller.

[0075] Specifically, the transition roller 22 to be replaced is moved down to the dynamic hoop assembly 5 and the static hoop assembly 4, and the dynamic hoop assembly 5 and the static hoop assembly 4 are fixedly connected to the transmission side and the operating side of the transition roller 22 respectively, and the transmission motor 15 is connected to the operating end of the transition roller 22 through the coupling 25.

[0076] Step 6: Start the transmission motor 15, move the connecting frame 3 horizontally, and draw the transition roller 22 to be replaced out of the sealing box 23.

[0077] Step 7: Reverse the process to install the new roller.

[0078] Specifically, after the old roller is pulled out from the sealing box 23, the old roller is taken out and replaced with a new roller, the dynamic clamp assembly 5 and the static clamp assembly 4 are fixedly connected to the transmission side and the operating side of the new roller respectively, the transmission motor 15 is connected to the operating end of the new roller through the coupling 25, the transmission motor 15 is started, and the new roller is pushed into the sealing box 23.

[0079] After the new roller is in place, first disconnect the clutch between the transmission motor 15 and the new roller, lift the new roller, separate the new roller from the dynamic clamp assembly 5 and the static clamp assembly 4, then remove the dynamic clamp assembly 5 on the transmission side, and pull the connecting frame 3 out of the sealing box 23.

[0080] Connect the main drive clutch of the annealing kiln to the drive side of the new roll, put in the leaf spring, graphite block and counterweight device, and complete the entire roll changing process.

[0081] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0082] 1. The connection between the dynamic hoop assembly and the static hoop assembly and the two ends of the transition roller, as well as the connection with the connecting frame, all adopt a quick-release structure, which saves a lot of roller changing time.

[0083] 2. The bottom of the dynamic clamp assembly and the static clamp assembly are both installed with limited guide wheels to prevent the transition roller from tipping over when being pulled out of the box or put into the box.

[0084] 3. The support feet can adjust the height of the frame. When the online roller changing device needs to be moved, adjust the support feet so that the casters can touch the workshop floor. After the online roller changing device is adjusted into place, adjust the support feet again so that the casters leave the workshop floor and the support feet touch the workshop floor. Lock the support feet to fix the online roller changing device.

[0085] 4. After the transition roller is pulled out of the box, the connecting frame can be locked by the anti-overturning rod to prevent the frame or transition roller from shaking.

[0086] 5. A limit plate is installed at the rear of the rack to prevent the connecting frame from falling out of the horizontal slot of the rack.

[0087] 6. Compared with the existing roll unit roll changing method, the online roll changing method of the present invention greatly reduces the preparation workload, has a simple structure, is easy to operate, greatly shortens the roll changing time, and saves a lot of labor costs.

[0088] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An online roller changing device for a sealing box, characterized in that: include: A frame (1), wherein a transverse through slot (19) is formed on the frame (1); A supporting shoe foot (2), the top end of which is fixedly connected to the frame (1) and capable of adjusting the vertical height of the frame (1); A connecting frame (3), wherein the connecting frame (3) is accommodated in the transverse through groove (19) along the transverse direction; A static clamp assembly (4), wherein the static clamp assembly (4) is fixedly connected to one end of the connecting frame (3); A dynamic hoop assembly (5), wherein the dynamic hoop assembly (5) is detachably fixedly connected to the other end of the connecting frame (3); An auxiliary walking assembly (6), wherein the auxiliary walking assembly (6) is arranged just below the other end of the connecting frame (3) and is fixedly connected to the connecting frame (3); A roller assembly (7), wherein the roller assembly (7) is disposed at one end of the connecting frame (3) and is fixedly connected to the connecting frame (3); Running wheels (8), the running wheels (8) are installed on both longitudinal sides of the static clamp assembly (4) and the dynamic clamp assembly (5), and the wheel spacing between the two running wheels (8) is greater than the longitudinal slot width of the transverse through slot (19).

2. The online roller changing device for a sealing box according to claim 1, characterized in that: The static clamp assembly (4) and the dynamic clamp assembly (5) both comprise an upper clamp (11), a lower mounting frame (12) and a limiting guide wheel (13); the bottom of the upper clamp (11) is fixedly connected to the top of the lower mounting frame (12); the running wheel (8) is rotatably connected to the top of the lower mounting frame (12); the limiting guide wheel (13) is rotatably connected to the bottom of the lower mounting frame (12); the limiting guide wheel (13) is accommodated in a transverse through groove (19); and the axial direction of the running wheel (8) is perpendicular to the axial direction of the limiting guide wheel (13).

3. The online roller changing device for a sealing box according to claim 2, characterized in that: The roller assembly (7) comprises a base (14), a transmission motor (15) and a connecting plate (16); one end of the connecting plate (16) is fixedly connected to a lower mounting frame (12) of the static clamp assembly (4); the other end of the connecting plate (16) is fixedly connected to the base (14); the transmission motor (15) is fixedly mounted above the base (14); and the transmission motor (15) is used to drive the transition roller (22) to rotate temporarily.

4. The online roller changing device for a sealing box according to claim 1, characterized in that: The frame (1) comprises a frame body (17) and casters (18); a transverse through groove (19) is formed on the top of the frame body (17), and the casters (18) are installed on the bottom of the frame body (17).

5. The online roller changing device for a sealing box according to claim 4, characterized in that: The frame body (17) is formed with a longitudinal through hole which is in communication with the transverse through slot (19), and an anti-overturning rod (9) is installed in the longitudinal through hole.

6. The online roller changing device for a sealing box according to claim 4, characterized in that: One end of the frame (17) is fixedly connected to a limit plate (10) that cooperates with the roller assembly (7) to form a stop.

7. The online roller changing device for a sealing box according to claim 1, characterized in that: The auxiliary walking assembly (6) comprises a support plate (20) and a follower wheel (21); the top end of the support plate (20) is vertically fixedly connected to the connecting frame (3), and the bottom end of the support plate (20) is rotatably connected to the follower wheel (21).

8. An online roller changing method for a sealing box, the online roller changing method using the online roller changing device for a sealing box according to any one of claims 1 to 7, characterized in that: The online roll changing method comprises the following steps: Step 1: Remove the related equipment under the old roller; Step 2: Move the online roller changing device to the operating side of the sealing box (23), and align the transverse through groove (19) on the frame (1) with the U-shaped groove of the sealing box (23); Step 3: Move the connecting frame (3) laterally and allow one end of the connecting frame (3) to pass through the transmission side of the sealing box (23); Step 4: The dynamic hoop assembly (5) is fixedly connected to the connecting frame (3), and the dynamic hoop assembly (5) is supported by an extension frame (24) temporarily installed on the sealing box (23); Step 5: Move the old roller downward, support and fix the two ends of the old roller by means of the dynamic clamp assembly (5) and the static clamp assembly (4), and connect the rotating roller assembly (7) to the operating end of the old roller by transmission; Step 6: Move the connecting frame (3) horizontally to remove the old roller from the sealing box (23) while rotating; Step 7: Reverse the process to install the new roller.

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