Top roller replacement device and replacement method of horizontal loop

Abstract

The invention discloses a top roller replacement device and method of a horizontal loop in the technical field of top roller replacement. The top roller replacement device comprises a mounting seat, the rotating shaft is vertically arranged on one side of the mounting seat, and the rotating shaft is rotationally connected with the mounting seat; one end of the rotating hanging bracket is fixedly connected with the rotating shaft, and guide wheels are arranged at the two ends of the rotating hanging bracket; the connecting sleeve is arranged below the other end of the rotary hanging bracket, and the connecting sleeve can be fixed on the outer side of the top roller; the traction mechanism is arranged below one end of the rotary hanging bracket and fixedly connected with the rotary hanging bracket, one end of the lifting rope is connected with the traction mechanism, and the other end of the lifting rope bypasses the two guide wheels and is fixedly connected with the connecting sleeve. The lifting rope is driven by the traction mechanism to lift the top roller, so that the top roller can be mounted in place at one time, the labor load is reduced, and the replacement efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of top roller replacement, and in particular to a top roller replacement device and a replacement method for a horizontal looper. Background Art

[0002] All major domestic steel mills have hot-dip galvanizing units. Horizontal loopers are widely used in hot-dip galvanizing units. Their main function is to store strip steel and ensure the normal operation of the unit when the unit is changing coils, welding strip steel, and operating roll change. The horizontal looper in the hot-dip galvanizing unit is in a closed structure due to the characteristics of the process layout, and the looper area is often tens of meters long; the rollers of the horizontal looper are divided into two layers, the lower layer bottom roller, which can be directly dismantled and reversed by construction personnel, but the upper two top rollers are nearly 5m from the ground, and the distance between the top top roller and the top ceiling is only 300mm, which limits the lifting distance; at the same time, there is no special construction, maintenance and replacement platform for the upper two top rollers, and the upper two top rollers cannot be hoisted using hand winches.

[0003] When replacing the top roller, it is necessary to first set a hanging point on the ceiling above the roller, pass a hemp rope through the shackle, tie the roller at one end of the hemp rope, and have multiple construction workers standing on the ground tighten the other end of the hemp rope. Then the construction workers stand on the upper walkway board to remove the shaft head pressure plate bolts of the top roller, and finally pull the hemp rope to achieve the lifting and lowering action of the roller replacement process. However, since a single roller weighs about 100kg, it is completely dependent on multiple construction workers to manually pull it, which is not only labor-intensive but also dangerous. In addition, after the roller is lifted into place, it cannot be directly put into place, and it is necessary to manually push the roller into place.

[0004] Patent document with announcement number CN109834116B discloses a replacement system and method for the top roller of a horizontal looper. The replacement method uses a replacement device that is detachably fixed to a channel steel frame to lift the roller upward and then rotate it horizontally to the upper walkway, and cooperates with a hoisting device to realize the hoisting of the roller, thereby improving the replacement construction efficiency and safety of the top roller. However, in actual production activities, the replacement system still has the following shortcomings:

[0005] (1) When replacing the two top rollers on the upper layer, it is necessary to successively fix the replacement device to different height positions of the channel steel frame. However, the frequent disassembly and assembly of the replacement device to the channel steel frame affects the replacement efficiency of the top rollers.

[0006] (2) The replacement device uses a hydraulic cylinder to lift the roller upward, and a hydraulic station and a hydraulic pump need to be configured for the replacement device. However, the space of the entire loop area is small, and the operation is inconvenient.

[0007] (3) The replacement device needs to be used in conjunction with the lifting device, which makes the entire replacement system complex and inconvenient to operate. Summary of the invention

[0008] In view of this, an object of the present invention is to provide a top roller replacement device for a horizontal looper to solve the technical problems of low replacement efficiency and inconvenient operation in the existing replacement method.

[0009] The technical solution adopted by the present invention is: a top roller replacement device of a horizontal looper, comprising:

[0010] A mounting seat, the mounting seat being capable of being fixedly connected to a channel steel frame at one end of the top roller;

[0011] A rotating shaft, the rotating shaft is vertically arranged on one side of the mounting seat, and the rotating shaft is rotatably connected to the mounting seat;

[0012] A rotating hanger, one end of which is fixedly connected to the rotating shaft, and guide wheels are provided at both ends of the rotating hanger;

[0013] A connecting sleeve, which is arranged below the other end of the rotating hanger and can be fixed on the outside of the top roller;

[0014] A traction mechanism, wherein the traction mechanism is arranged below one end of the rotating hanger and is fixedly connected to the rotating hanger.

[0015] A lifting rope, one end of which is connected to the traction mechanism, and the other end of which is passed around two guide wheels and fixedly connected to the connecting sleeve.

[0016] Preferably, a balance beam is provided below the other end of the rotating hanger, the middle portion of the balance beam is fixedly connected to the end portion of the lifting rope, and the two ends of the balance beam are fixedly connected to the two connecting sleeves in a one-to-one correspondence.

[0017] Preferably, a short diagonal brace and a long diagonal brace are provided between the rotating hanger and the rotating shaft, one end of the short diagonal brace is fixedly connected to the top end of the rotating shaft, and the other end of the short diagonal brace is rotatably connected to one end of the rotating hanger; one end of the long diagonal brace is fixedly connected to the bottom end of the rotating shaft, and the other end of the long diagonal brace is fixedly connected to the middle part of the rotating hanger.

[0018] Preferably, a connecting plate is fixedly connected to the bottom end of the rotating shaft, a plurality of connecting holes are vertically spaced on the connecting plate, and one end of the long diagonal brace is fixedly connected to a pin passing through the connecting hole.

[0019] Preferably, the mounting seat is fixedly connected to the channel steel frame by means of U-shaped bolts, and the U-shaped bolts are located above the roller positioning plate.

[0020] Preferably, the other end of the rotating hanger is fixedly connected to a guide plate, and the lifting rope is inserted into a horizontal limiting hole of the guide plate.

[0021] Preferably, the connecting sleeve is a half sleeve.

[0022] Preferably, the traction mechanism is a winch; and the lifting rope is a steel wire rope.

[0023] Preferably, the rotating shaft is an eccentric shaft.

[0024] The second object of the present invention is to provide a method for replacing the top roller of a horizontal looper, the method using the above-mentioned replacement device, the method comprising the following steps:

[0025] S1: The mounting base is fixedly connected to the channel steel frame at one end of the top roller by means of U-bolts;

[0026] S2: Rotatingly connecting one end of the rotating hanger to the top of the short diagonal brace, and fixedly connecting the long diagonal brace between the rotating hanger and the rotating shaft;

[0027] S3: The other end of the lifting rope is fixedly connected to the middle part of the balance beam or the connecting sleeve;

[0028] S4: Rotate the rotating shaft forward, drive the connecting sleeve to rotate horizontally to the disassembly and assembly station through the rotating hanger, and fix the connecting sleeve on the outer side of the top roller;

[0029] S5: starting the traction mechanism to lift the top roller upwards through the lifting rope;

[0030] S6: Rotate the rotating shaft in the reverse direction, and drive the top roller to rotate horizontally to the hanging position through the rotating hanger;

[0031] S7: Start the traction mechanism and lower the top roller via the lifting rope.

[0032] Beneficial effects of the present invention:

[0033] The present invention adopts a rotary lifting method, firstly, the rotary hanger is fixedly connected to the rotary shaft arranged on one side of the mounting seat, and the horizontal position of the connecting sleeve below the other end of the rotary hanger can be adjusted by horizontal rotation of the rotary shaft on the mounting seat; the present invention fixes the traction mechanism on one end of the rotary hanger, and fixes one end of the lifting rope with the traction mechanism, and the other end of the lifting rope is fixedly connected with the connecting sleeve after passing around the guide wheel on the rotary hanger, and the top roller can be lifted and lowered at different horizontal positions by the traction mechanism and the lifting rope, thereby realizing the direct lifting and replacement of the live top roller, thereby improving the replacement efficiency and convenience of the top roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is one of the structural schematic diagrams of the top roller replacement device of the horizontal looper of the present invention;

[0035] Figure 2This is the second structural schematic diagram of the top roller replacement device of the horizontal looper of the present invention;

[0036] Figure 3 A top view of the top roller replacement device of the horizontal looper of the present invention in use;

[0037] Figure 4 It is a three-dimensional schematic diagram of the top roller replacement device of the horizontal looper of the present invention at the disassembly and assembly station;

[0038] Figure 5 It is a three-dimensional schematic diagram of the top roller replacement device of the horizontal looper of the present invention in the hanging position.

[0039] Description of reference numerals in the figures:

[0040] 1. Mounting seat; 2. Rotating shaft; 3. Rotating hanger; 4. Guide wheel; 5. Connecting sleeve; 6. Traction mechanism; 7. Lifting rope; 8. Balance beam; 9. Short diagonal brace; 10. Long diagonal brace; 11. Connecting plate; 12. Connecting hole; 13. U-bolt; 14. Guide plate; 15. Top roller; 16. Channel steel frame; 17. Roller positioning plate. DETAILED DESCRIPTION

[0041] 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.

[0042] 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 operate 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.

[0043] 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.

[0044] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0045] Examples, such as Figure 1-Figure 5 As shown, a top roller replacement device for a horizontal looper is used to replace the two top rollers on the upper layer of the looper area; the replacement device includes:

[0046] The mounting seat 1 can be fixedly connected to the channel steel frame 16 at one end of the top roller 15 so that the entire replacement device is fixedly connected to the channel steel frame 16.

[0047] The rotating shaft 2 is arranged along the vertical direction and is located at one side of the mounting seat 1. Both ends of the rotating shaft 2 are rotatably connected to the mounting seat 1 so that the rotating shaft 2 can rotate in a horizontal plane.

[0048] The rotating hanger 3 is arranged in the horizontal direction, one end of the rotating hanger 3 is fixedly connected to the rotating shaft 2, and guide wheels 4 are arranged at both ends of the rotating hanger 3.

[0049] The connecting sleeve 5 is arranged below the other end of the rotating hanger 3, and the connecting sleeve 5 can be fixed on the outside of the top roller 15, that is, the connecting sleeve 5 can be sleeved and fixedly connected to the outer circumferential surface of the top roller 15.

[0050] The traction mechanism 6 is arranged below one end of the rotating hanger 3 , that is, the traction mechanism 6 is fixedly arranged below one end of the rotating hanger 3 close to the rotating shaft 2 , and the traction mechanism 6 is fixedly connected to the rotating hanger 3 .

[0051] A lifting rope 7 , one end of which is connected to the traction mechanism 6 , and the other end of which is passed around the two guide wheels 4 in succession and fixedly connected to the connecting sleeve 5 .

[0052] The present application adopts a rotary lifting method, firstly fixing the rotary hanger 3 with the rotary shaft 2 arranged on one side of the mounting seat 1, and the horizontal position of the connecting sleeve 5 below the other end of the rotary hanger 3 can be adjusted by horizontal rotation of the rotary shaft 2 on the mounting seat 1; the present application fixes the traction mechanism 6 on one end of the rotary hanger 3, and fixes one end of the lifting rope 7 with the traction mechanism 6, and fixes the other end of the lifting rope 7 with the connecting sleeve 5 after passing the guide wheel 4 on the rotary hanger 3, and the top roller 15 can be lifted and lowered at different horizontal positions by the traction mechanism 6 and the lifting rope 7, so as to realize direct lifting and replacement of the top roller 15, thereby improving the replacement efficiency and convenience of the top roller 15.

[0053] In a specific embodiment, if Figure 1 As shown, one end of the rotating hanger 3 is fixedly connected to the rotating shaft 2, and a balance beam 8 is provided below the other end of the rotating hanger 3; the middle part of the balance beam 8 is fixedly connected to the end of the lifting rope 7, and the two ends of the balance beam 8 are fixedly connected to the two connecting sleeves 5 in a one-to-one correspondence.

[0054] This arrangement is because: when the lifting rope 7 lifts the top roller 15 upward, in order to keep the top roller 15 stable, the lifting force of the lifting rope 7 on the top roller 15 needs to be in line with the gravity of the top roller 15, that is, the lifting rope 7 is located directly above the center of gravity of the top roller 15. In this embodiment, a balance beam 8 is fixedly connected to the bottom end of the lifting rope 7, and a connecting sleeve 5 is fixedly connected to both ends of the balance beam 8 in a one-to-one correspondence. The connecting sleeve 5 applies a vertical upward lifting force to both ends of the top roller 15, which can further ensure the stability of the top roller 15 during the lifting process.

[0055] Preferably, the two connecting sleeves 5 are symmetrically arranged at both ends of the balance beam 8 .

[0056] In a specific embodiment, if Figure 1 , Figure 2 As shown, a short diagonal brace 9 and a long diagonal brace 10 are provided between the rotating hanger 3 and the rotating shaft 2; the short diagonal brace 9 is arranged above the long diagonal brace 10, and the short diagonal brace 9 and the long diagonal brace 10 are arranged obliquely, the bottom end of the short diagonal brace 9 is fixedly connected to the top end of the rotating shaft 2, and the top end of the short diagonal brace 9 is rotatably connected to one end of the rotating hanger 3 through a pin. The bottom end of the long diagonal brace 10 is fixedly connected to the bottom end of the rotating shaft 2, and the top end of the long diagonal brace 10 is fixedly connected to the middle part of the rotating hanger 3, so that the rotating hanger 3 structure is stable.

[0057] Preferably, Figure 1 , Figure 2 As shown, a connecting plate 11 is fixedly connected to the bottom end of the rotating shaft 2, and a plurality of connecting holes 12 are provided on the connecting plate 11, and the plurality of connecting holes 12 are spaced apart along the vertical direction; the top end of the long diagonal brace 10 is detachably fixedly connected to the middle part of the rotating hanger 3 by bolts, and the bottom end of the long diagonal brace 10 is fixedly connected to a pin shaft passing through the connecting hole 12.

[0058] This arrangement is because: in order to ensure the stability of the top roller 15 during the hoisting process, it is necessary to make the hoisting force of the hoisting rope 7 on the top roller 15 and the gravity of the top roller 15 collinear, that is, it is necessary to ensure that the other end of the rotating hanger 3 is located directly above the center of gravity of the top roller 15. In this embodiment, the top end of the long diagonal brace 10 is fixedly connected to the middle part of the rotating hanger 3, and the bottom end of the long diagonal brace 10 is detachably fixedly connected to the connecting plate 11 at the bottom end of the rotating shaft 2. The long diagonal brace 10 can be fixedly connected to the connecting holes 12 at different positions on the connecting plate 11, so that the other end of the rotating hanger 3 can rotate around the rotating shaft 2 in the vertical plane, thereby realizing the fine adjustment of the horizontal position of the other end of the rotating hanger 3 above the top roller 15.

[0059] In a specific embodiment, if Figure 4 , Figure 5 As shown, the mounting base 1 is fixedly connected to the channel steel frame 16 via U-shaped bolts 13 .

[0060] Specifically, the mounting seat 1 is arranged on one side of the channel steel frame 16, and the mounting seat 1 is arranged in the vertical direction, and mounting holes are provided on both sides of the top and bottom ends of the mounting seat 1, and two U-shaped bolts 13 are sleeved on the channel steel frame 16, and the two ends of the U-shaped bolts 13 are inserted into the mounting holes, and butterfly nuts are threadedly connected at the ends of the U-shaped bolts 13, so that the mounting seat 1 and the U-shaped bolts 13 are clamped and fixed on the channel steel frame 16.

[0061] Preferably, the U-bolt 13 at the bottom is located above the roller positioning plate 17, and the U-bolt 13 abuts against the roller positioning plate 17 to prevent the mounting base 1 from moving downward during the hanging operation.

[0062] In a specific embodiment, if Figure 1 , Figure 2 As shown, the other end of the rotating hanger 3 is fixedly connected to a guide plate 14, that is, a guide plate 14 is fixedly connected to the end of the rotating hanger 3 away from the rotating shaft 2, and the guide plate 14 is arranged in the horizontal direction. A horizontal limiting hole (not shown in the figure) is arranged on the guide plate 14, and the lifting rope 7 is passed through the horizontal limiting hole of the guide plate 14, which is used to limit the lifting rope 7 in the horizontal direction. .

[0063] In a specific embodiment, if Figure 1 , Figure 2 As shown, bearing seats are provided at the top and bottom ends of the mounting seat 1, the rotating shaft 2 is arranged along the vertical direction, and the top and bottom ends of the rotating shaft 2 are fixedly connected with the two bearing seats in a one-to-one correspondence, so that the rotating shaft 2 can rotate horizontally.

[0064] Preferably, the rotating shaft 2 is an eccentric shaft.

[0065] In a specific embodiment, if Figure 1 , Figure 2 As shown, the connecting sleeve 5 can be any sleeve structure that can be fixed on the outer circumferential surface of the top roller 15; preferably, the connecting sleeve 5 is a half sleeve; the half sleeve is a prior art and will not be described in detail here.

[0066] The traction mechanism 6 can be any power mechanism that can drive the lifting rope 7 to move axially; preferably, the traction mechanism 6 is a winch.

[0067] The lifting rope 7 is preferably a steel wire rope.

[0068] Examples, such as Figure 3 , Figure 4 , Figure 5 As shown, a method for replacing the top roller of a horizontal looper, the method uses the above-mentioned replacement device, and the method comprises the following steps:

[0069] S1: Place the mounting base 1 on one side of the channel steel frame 16, insert two U-bolts 13 into the mounting holes of the mounting base 1 from the other side of the channel steel frame 16, and thread the butterfly nuts on the U-bolts 13 so that the mounting base 1 and the U-bolts 13 are clamped and fixed on the channel steel frame 16, and the U-bolts 13 at the bottom are located on the roller positioning plate 17 at the end of the top roller 15, and the U-bolts 13 are in contact with the roller positioning plate 17.

[0070] S2: Rotate one end of the rotating hanger 3 with the top of the short diagonal brace 9 through a pin, rotate the top of the long diagonal brace 10 with the middle of the rotating hanger 3 through a pin, and fix the bottom end of the long diagonal brace 10 with the connecting plate 11 at the bottom end of the rotating shaft 2 through a pin.

[0071] S3: The other end of the lifting rope 7 is fixedly connected to the middle part of the balance beam 8 or the connecting sleeve 5.

[0072] S4: Rotate the rotating shaft 2 forward, first drive the connecting sleeve 5 to rotate horizontally to the disassembly and assembly station through the rotating hanger 3, that is, rotate the connecting sleeve 5 to just above the top roller 15, and then fix the connecting sleeve 5 on the outside of the top roller 15.

[0073] S5: first remove the shaft head pressure plate bolts of the top roller 15, then start the traction mechanism 6, and lift the top roller 15 upward through the traction mechanism 6 and the lifting rope 7 until the top roller 15 moves out of the positioning slot on the roller positioning plate 17.

[0074] S6: Rotate the rotating shaft 2 in the opposite direction, and drive the top roller 15 to rotate horizontally to the hanging position through the rotating hanger 3, that is, rotate the top roller 15 horizontally to a position convenient for hanging through the rotating hanger 3.

[0075] S7: Start the traction mechanism 6, and lower the top roller 15 to the ground through the traction mechanism 6 and the lifting rope 7.

[0076] Compared with the prior art, this application has at least the following beneficial technical effects:

[0077] The present application provides a plurality of connection holes on a connection plate connected between the rotating shaft and the rotating hanger, so as to facilitate fine adjustment of the height and horizontal position of the other end of the rotating hanger.

[0078] The present application has a balance beam and a half sleeve fixedly connected to the other end of the lifting rope, which can reduce the height of the lifting sling and can lift the top roller within a limited distance.

[0079] The rotating shaft in the present application adopts an eccentric structure to increase the rotation angle of the rotating hanger, so as to facilitate the rotating hanger to be lifted directly above the top roller.

[0080] When the replacement device in the present application is used to replace the top roller of the loop, the top roller is raised and lowered by the wire rope driven by the winch, and the construction personnel are no longer required to lift and lower the top roller by pulling the hemp rope on both sides of the roller. The operation of lifting and reversing the top roller by the winch is optimized to be performed by a single person, which can reduce the labor load and improve the safety of maintenance. At the same time, the labor can be reduced from 8 people*2 hours to 4 people*1 hour, and the construction efficiency is improved by 75%.

[0081] The rotating hanger in the present application can rotate to just above the roller, so that the top roller can be installed in place at one time, which not only avoids the situation where construction workers manually push the roller into place, but also shortens the time for dismantling and reversing the top roller, and improves replacement efficiency.

[0082] The device in the present application has a small, simple and reliable structure and can be promoted in narrow spaces. It has a significant driving significance for improving labor efficiency, reducing personnel input and consumption, reducing costs, and ensuring the quality of project implementation.

[0083] 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. A top roller replacement device for a horizontal looper, characterized in that: include: A mounting seat (1), wherein the mounting seat (1) can be fixedly connected to a channel steel frame (16) at one end of the top roller (15); A rotating shaft (2), the rotating shaft (2) being vertically arranged on one side of the mounting seat (1), and the rotating shaft (2) being rotatably connected to the mounting seat (1); A rotating hanger (3), one end of the rotating hanger (3) is fixedly connected to the rotating shaft (2), and guide wheels (4) are provided at both ends of the rotating hanger (3); A connecting sleeve (5), the connecting sleeve (5) being arranged below the other end of the rotating hanger (3), and the connecting sleeve (5) being capable of being fixed on the outside of the top roller (15); A traction mechanism (6), wherein the traction mechanism (6) is arranged below one end of the rotating hanger (3), and the traction mechanism (6) is fixedly connected to the rotating hanger (3). A lifting rope (7), one end of which is connected to the traction mechanism (6), and the other end of which passes around two guide wheels (4) and is fixedly connected to the connecting sleeve (5).

2. A top roller replacement device for a horizontal looper according to claim 1, characterized in that: A balance beam (8) is provided below the other end of the rotating hanger (3), the middle portion of the balance beam (8) is fixedly connected to the end of the lifting rope (7), and the two ends of the balance beam (8) are fixedly connected to the two connecting sleeves (5) in a one-to-one correspondence.

3. A top roller replacement device for a horizontal looper according to claim 1 or 2, characterized in that: A short diagonal brace (9) and a long diagonal brace (10) are provided between the rotating hanger (3) and the rotating shaft (2); one end of the short diagonal brace (9) is fixedly connected to the top end of the rotating shaft (2), and the other end of the short diagonal brace (9) is rotatably connected to one end of the rotating hanger (3); one end of the long diagonal brace (10) is fixedly connected to the bottom end of the rotating shaft (2), and the other end of the long diagonal brace (10) is fixedly connected to the middle of the rotating hanger (3).

4. A top roller replacement device for a horizontal looper according to claim 3, characterized in that: The bottom end of the rotating shaft (2) is fixedly connected to a connecting plate (11), a plurality of connecting holes (12) are provided on the connecting plate (11) at vertical intervals, and one end of the long diagonal brace (10) is fixedly connected to a pin passing through the connecting hole (12).

5. A top roller replacement device for a horizontal looper according to claim 1 or 2, characterized in that: The mounting seat (1) is fixedly connected to the channel steel frame (16) via U-shaped bolts (13), and the U-shaped bolts (13) are located above the roller positioning plate (17).

6. A top roller replacement device for a horizontal looper according to claim 1 or 2, characterized in that: The other end of the rotating hanger (3) is fixedly connected to a guide plate (14), and the lifting rope (7) is inserted into a horizontal limiting hole of the guide plate (14).

7. A top roller replacement device for a horizontal looper according to claim 1 or 2, characterized in that: The connecting sleeve (5) is a half sleeve.

8. A top roller replacement device for a horizontal looper according to claim 1 or 2, characterized in that: The traction mechanism (6) is a winch; the lifting rope (7) is a steel wire rope.

9. A top roller replacement device for a horizontal looper according to claim 1 or 2, characterized in that: The rotating shaft (2) is an eccentric shaft.

10. A method for replacing the top roller of a horizontal looper, the method using the replacement device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1: The mounting base (1) is fixedly connected to the channel steel frame (16) at one end of the top roller (15) by means of U-shaped bolts (13); S2: Rotatingly connecting one end of the rotating hanger (3) to the top end of the short diagonal brace (9), and fixedly connecting the long diagonal brace (10) between the rotating hanger (3) and the rotating shaft (2); S3: The other end of the lifting rope (7) is fixedly connected to the middle part of the balance beam (8) or the connecting sleeve (5); S4: The rotating shaft (2) is rotated forward, and the connecting sleeve (5) is driven to rotate horizontally to the disassembly and assembly station through the rotating hanger (3), and the connecting sleeve (5) is fixed to the outside of the top roller (15); S5: starting the traction mechanism (6) and lifting the top roller (15) upwards via the lifting rope (7); S6: Rotate the rotating shaft (2) in the opposite direction, and drive the top roller (15) to rotate horizontally to the hanging position through the rotating hanger (3); S7: Start the traction mechanism (6) and lower the top roller (15) via the lifting rope (7).

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