Dismounting tool for screw-down thrust bearing of rolling mill

Abstract

The utility model belongs to the technical field of bearing dismounting, and particularly relates to a rolling mill screw-down thrust bearing dismounting tool which comprises a base, a cavity is formed in the base, through holes are formed in the top and the bottom of the base and communicate with the cavity, a bidirectional mechanism and a clamping mechanism are arranged in the cavity, and access doors are arranged on the front side and the rear side of the base; two fixing seats are fixedly mounted on the inner wall of the right side of the cavity, a rotating shaft is rotationally mounted on the two fixing seats, the two ends of the rotating shaft extend to the outer sides of the corresponding fixing seats correspondingly, and a rotating mechanism is arranged on the right side of the base. The thrust bearing dismounting device is reasonable in design, the purpose of clamping and fixing the thrust bearing through the first clamping seat and the second clamping seat can be achieved by arranging the bidirectional mechanism and the clamping mechanism, the purpose of conveniently dismounting the thrust bearing can be achieved by arranging the jacking mechanism, and therefore the purposes of reducing the labor cost, saving time and labor and improving the working efficiency can be achieved. And the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of bearing disassembly, and particularly to a disassembly tool for a rolling mill screw down thrust bearing. Background Art

[0002] The rolling mill screw down thrust bearing is a special bearing designed specifically for the rolling mill screw down mechanism. The bearing has no cage, is full of rollers, allows a very low rotational speed, has a large axial load capacity, and its self-aligning performance must be ensured.

[0003] Currently, a disassembly tool for a rolling mill screw down thrust bearing announced in the Chinese patent with the publication number CN209050685U includes a lifting screw, a hook base, a groove, a hook, a cylindrical pin, and a lifting plate. A lifting screw is welded in the middle of the lifting plate to form an opening adjuster. A hook base with internal threads is installed at the thread of the lifting screw. Three grooves are fixed on the hook base and are distributed at 120°. The hook is movably connected to the groove through a cylindrical pin. The opening size between the three hooks is adjusted through the opening adjuster. It has the characteristics of fast and safe disassembly process, greatly improving work efficiency and reducing labor intensity.

[0004] In actual use, it is found that the existing thrust bearing disassembly tool needs to be operated by a crane, resulting in an increase in labor costs, time-consuming and laborious, and thus affecting work efficiency. Therefore, we propose a disassembly tool for a rolling mill screw down thrust bearing to solve the above problems. Utility Model Content

[0005] The purpose of this application is to solve the problems existing in the prior art: the increase in labor costs, time-consuming and laborious, and thus affecting work efficiency, and to propose a disassembly tool for a rolling mill screw down thrust bearing.

[0006] To achieve the above purpose, this application adopts the following technical solutions:

[0007] A disassembly tool for a rolling mill screw down thrust bearing includes a base. A cavity is opened in the base. Through holes are opened at both the top and bottom of the base, and the through holes are communicated with the cavity. A two-way mechanism and a clamping mechanism are arranged in the cavity. Maintenance doors are arranged on both the front and rear sides of the base. Two fixed seats are fixedly installed on the right inner wall of the cavity. The same rotating shaft is rotatably installed on the two fixed seats. Both ends of the rotating shaft extend to the outside of the corresponding fixed seats respectively. A rotating mechanism is arranged on the right side of the base. A support frame is fixedly installed on the top of the base. A jacking mechanism is arranged on the support frame. An installation shaft is arranged in the through hole, and a thrust bearing is sleeved on the installation shaft.

[0008] Preferably, the bidirectional mechanism includes two bidirectional screws, two first screw seats and two second screw seats. Two bidirectional screws are rotatably installed on the inner wall of the left side of the cavity, the right ends of the bidirectional screws are rotatably connected to the inner wall of the right side of the cavity, the through hole is located between the two bidirectional screws, the first screw seats and the second screw seats are sleeved on the bidirectional screws by threads, the first screw seat is located on the left side of the second screw seat, a second gear driving mechanism is arranged between the bidirectional screw and the rotating shaft, and an oil injection mechanism is arranged between the first screw seat and the second screw seat.

[0009] Preferably, the clamping mechanism includes a first connecting seat, a first clamping seat, a second connecting seat and a second clamping seat. The same first connecting seat is fixedly installed between the two first screw seats, the same second connecting seat is fixedly installed between the two second screw seats, the first clamping seat is fixedly installed on one side of the first connecting seat close to the through hole, the second clamping seat is fixedly installed on one side of the second connecting seat close to the through hole, and the first clamping seat, the second clamping seat and the thrust bearing are adapted to each other.

[0010] Preferably, the rotating mechanism includes a rotating rod and a rotating knob. The rotating rod is rotatably installed on the right side of the base, the left end of the rotating rod extends into the cavity, the rotating knob is fixedly installed at the right end of the rotating rod, and a first gear driving mechanism is arranged between the rotating rod and the rotating shaft.

[0011] Preferably, the first gear driving mechanism includes two first bevel gears. The first bevel gears are fixedly sleeved on the left end of the rotating rod and the rotating shaft respectively. The first bevel gears are located between the two fixed seats, and the two first bevel gears are meshed with each other.

[0012] Preferably, the second gear driving mechanism includes two second bevel gears and two third bevel gears. The second bevel gears are fixedly sleeved on the bidirectional screws, the third bevel gears are fixedly sleeved on both ends of the rotating shaft, the second bevel gears are located on the right side of the corresponding second screw seats, and the second bevel gears are meshed with the corresponding third bevel gears.

[0013] Preferably, the jacking mechanism includes a lifting screw and a jacking bead. The lifting screw is threadedly installed on the top of the support frame, the bottom end of the lifting screw extends into the inner side of the support frame, the bottom end of the lifting screw is provided with the jacking bead, the jacking bead is adapted to the top end of the installation shaft, and a hexagonal turning head is arranged at the top end of the lifting screw.

[0014] Preferably, the oil injection mechanism includes a first piston rod, a second piston rod, a piston cylinder and an oil injection pipe. The first piston rod is fixedly installed on the right side of the first screw seat, the second piston rod is fixedly installed on the left side of the second screw seat, the same piston cylinder is slidably sleeved on the first piston rod and the second piston rod, piston plates are fixedly installed at the adjacent ends of the first piston rod and the second piston rod, the piston plates are slidably connected with the inner wall of the corresponding piston cylinder, an oil injection pipe is arranged at the top of the piston cylinder, the top end of the oil injection pipe extends above the base, the top end of the oil injection pipe is adapted to the installation shaft, and a one-way valve is arranged in the oil injection pipe.

[0015] Advantages of the present application:

[0016] 1. Through the cooperation of the rotary knob, rotary rod, two first bevel gears, rotating shaft, two second bevel gears, two third bevel gears, bidirectional screw, two first screw seats, two second screw seats, first connecting seat, second connecting seat, first clamping seat and second clamping seat, by clockwise rotating the rotary knob, the first clamping seat and the second clamping seat can be driven to move towards the side close to each other, and the purpose of clamping and fixing the thrust bearing by the first clamping seat and the second clamping seat can be achieved;

[0017] 2. Through the cooperation of the hexagonal turning head, lifting screw rod and top bead, by clockwise rotating the hexagonal turning head, the top bead can be driven to move downward, the mounting shaft can be extruded and pushed by the top bead, the thrust bearing can be driven to move upward by the first clamping seat and the second clamping seat, and the purpose of conveniently disassembling the thrust bearing can be achieved, thereby reducing labor costs, saving time and effort, and improving work efficiency;

[0018] 3. Through the cooperation of the first piston rod, second piston rod, piston cylinder, piston plate and oil injection pipe, the lubricating oil in the piston cylinder can be injected between the mounting shaft and the thrust bearing through the piston plate by the piston plate, the thrust bearing and the mounting shaft can be lubricated, and the purpose of facilitating the disassembly of the thrust bearing can be achieved. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of a disassembly tool for a rolling mill screw down thrust bearing proposed by the present application;

[0020] Figure 2 is a top view sectional structural schematic diagram of a disassembly tool for a rolling mill screw down thrust bearing proposed by the present application;

[0021] Figure 3 is a three-dimensional structural schematic diagram of the mounting shaft and the thrust bearing of a disassembly tool for a rolling mill screw down thrust bearing proposed by the present application;

[0022] Figure 4 is a structural schematic diagram of the second clamping seat of a disassembly tool for a rolling mill screw down thrust bearing proposed by the present application.

[0023] In the figure: 1. Base; 2. Cavity; 3. Through hole; 4. Bidirectional screw; 5. First screw seat; 6. Second screw seat; 7. First connecting seat; 8. First clamping seat; 9. Second connecting seat; 10. Second clamping seat; 11. Mounting shaft; 12. Bearing; 13. Fixed seat; 14. Rotating shaft; 15. Rotary rod; 16. Rotary knob; 17. First bevel gear; 18. Second bevel gear; 19. Third bevel gear; 20. Support frame; 21. Lifting screw rod; 22. Top bead; 23. Hexagonal turning head. Specific embodiments

[0024] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0025] Referring to Figures 1-4 , a dismounting tool for a mill screw-down thrust bearing, comprising a base 1, a cavity 2 is formed in the base 1, through holes 3 are formed in both the top and bottom of the base 1, the through holes 3 are communicated with the cavity 2, a bidirectional mechanism and a clamping mechanism are arranged in the cavity 2, and inspection doors are arranged on both the front and rear sides of the base 1; two fixing seats 13 are fixedly installed on the right inner wall of the cavity 2, and the same rotating shaft 14 is rotatably installed on the two fixing seats 13, both ends of the rotating shaft 14 extend to the outside of the corresponding fixing seats 13 respectively, a rotating mechanism is arranged on the right side of the base 1, a support frame 20 is fixedly installed on the top of the base 1, a jacking mechanism is arranged on the support frame 20, a mounting shaft 11 is arranged in the through hole 3, and a thrust bearing 12 is sleeved on the mounting shaft 11.

[0026] In this embodiment, the bidirectional mechanism includes two bidirectional screws 4, two first screw seats 5 and two second screw seats 6. Two bidirectional screws 4 are rotatably installed on the left inner wall of the cavity 2, the right end of the bidirectional screw 4 is rotatably connected to the right inner wall of the cavity 2, the through hole 3 is located between the two bidirectional screws 4, a first screw seat 5 and a second screw seat 6 are threadedly sleeved on the bidirectional screw 4, the first screw seat 5 is located on the left side of the second screw seat 6, a second gear driving mechanism is arranged between the bidirectional screw 4 and the rotating shaft 14, and an oil injection mechanism is arranged between the first screw seat 5 and the second screw seat 6. By providing the bidirectional mechanism, the bidirectional screw 4 can drive the first screw seat 5 and the corresponding second screw seat 6 to move towards the side close to each other, and the purpose of driving the first connecting seat 7 and the second connecting seat 9 to move towards the side close to each other can be achieved.

[0027] In this embodiment, the clamping mechanism includes a first connecting seat 7, a first clamping seat 8, a second connecting seat 9 and a second clamping seat 10. A same first connecting seat 7 is fixedly installed between two first screw seats 5, and a same second connecting seat 9 is fixedly installed between two second screw seats 6. A first clamping seat 8 is fixedly installed on one side of the first connecting seat 7 close to the through hole 3, and a second clamping seat 10 is fixedly installed on one side of the second connecting seat 9 close to the through hole 3. The first clamping seat 8 and the second clamping seat 10 are adapted to the thrust bearing 12. By providing the clamping mechanism, the first connecting seat 7 and the second connecting seat 9 can drive the first clamping seat 8 and the second clamping seat 10 to move towards each other, and the purpose of clamping and fixing the thrust bearing 12 by the first clamping seat 8 and the second clamping seat 10 can be achieved.

[0028] In this embodiment, the rotating mechanism includes a rotating rod 15 and a rotating knob 16. The rotating rod 15 is rotatably installed on the right side of the base 1, the left end of the rotating rod 15 extends into the cavity 2, the rotating knob 16 is fixedly installed at the right end of the rotating rod 15, and a first gear driving mechanism is arranged between the rotating rod 15 and the rotating shaft 14. By providing the rotating mechanism, the rotating rod 15 can be rotated by the rotating knob 16, and the purpose of driving the first bevel gear 17 to rotate can be achieved.

[0029] In this embodiment, the first gear driving mechanism includes two first bevel gears 17. First bevel gears 17 are fixedly sleeved on the left end of the rotating rod 15 and the rotating shaft 14 respectively. The first bevel gears 17 are located between two fixed seats 13, and the two first bevel gears 17 are meshed with each other. By providing the first gear driving mechanism, the rotating rod 15 can drive the rotating shaft 14 to rotate.

[0030] In this embodiment, the second gear driving mechanism includes two second bevel gears 18 and two third bevel gears 19. A second bevel gear 18 is fixedly sleeved on the bidirectional screw 4, third bevel gears 19 are fixedly sleeved on both ends of the rotating shaft 14 respectively. The second bevel gear 18 is located on the right side of the corresponding second screw seat 6, and the second bevel gear 18 is meshed with the corresponding third bevel gear 19. By providing the second gear driving mechanism, the rotating shaft 14 can drive the two bidirectional screws 4 to rotate simultaneously.

[0031] In this embodiment, the jacking mechanism includes a lifting screw 21 and a top bead 22. The lifting screw 21 is threadedly installed at the top of the support frame 20, the bottom end of the lifting screw 21 extends into the inner side of the support frame 20, a top bead 22 is arranged at the bottom end of the lifting screw 21, the top bead 22 is adapted to the top end of the mounting shaft 11, and a hexagonal turning head 23 is arranged at the top end of the lifting screw 21. By providing the jacking mechanism, the lifting screw 21 can drive the top bead 22 to move downward, the purpose of extruding and jacking the mounting shaft 11 by the top bead 22 can be achieved, the purpose of driving the support frame 20 and the base 1 to move upward can be achieved, and the purpose of reducing the friction between the lifting screw 21 and the mounting shaft 11 by the top bead 22 can be achieved.

[0032] In this embodiment, the oil injection mechanism includes a first piston rod 24, a second piston rod 25, a piston cylinder 26 and an oil injection pipe 27. The first piston rod 24 is fixedly installed on the right side of the first screw seat 5, and the second piston rod 25 is fixedly installed on the left side of the second screw seat 6. The first piston rod 24 and the second piston rod 25 are slidably sleeved with the same piston cylinder 26. Piston plates are fixedly installed at the adjacent ends of the first piston rod 24 and the second piston rod 25. The piston plates are slidably connected to the inner walls of the corresponding piston cylinders 26. An oil injection pipe 27 is arranged at the top of the piston cylinder 26. The top end of the oil injection pipe 27 extends above the base 1. The top end of the oil injection pipe 27 is adapted to the mounting shaft 11. A one-way valve is arranged in the oil injection pipe 27. By providing the oil injection mechanism, the first piston rod 24 and the second piston rod 25 can slide in the piston cylinder 26, the lubricating oil can be pushed into the oil injection pipe 27 through the piston plates, the lubricating oil can be injected between the mounting shaft 11 and the thrust bearing 12 through the oil injection pipe 27, the thrust bearing 12 and the mounting shaft 11 can be lubricated, and the purpose of facilitating the disassembly of the thrust bearing 12 can be achieved.

[0033] In this application, during use, first, the through hole 3 on the base 1 is sleeved outside the thrust bearing 12. By rotating the knob 16 clockwise, the function drives the rotating rod 15 to rotate clockwise, and can drive the rotating shaft 14 to rotate clockwise through the two first bevel gears 17. It can drive the two bidirectional screws 4 to rotate clockwise simultaneously through the two second bevel gears 18 and the two third bevel gears 19, and can drive the first screw seat 5 and the corresponding second screw seat 6 to move towards the side close to each other, and can drive the first connecting seat 7 and the second connecting seat 9 to move towards the side close to each other, and can drive the first clamping seat 8 and the second clamping seat 10 to move towards the side close to each other, so as to achieve the purpose of clamping and fixing the thrust bearing 12 by the first clamping seat 8 and the second clamping seat 10. By using a wrench to rotate the hexagonal head 23 clockwise, it can drive the lifting screw 21 to move downward, and can drive the top bead 22 to move downward, and can push and move the mounting shaft 11 through the top bead 22, and can achieve driving the support frame 20 and the base 1 to move upward, and can achieve driving the thrust bearing 12 to move upward by the first clamping seat 8 and the second clamping seat 10, and can achieve the purpose of conveniently disassembling the thrust bearing 12, thereby achieving the purpose of reducing labor costs, saving time and effort, and improving work efficiency. When maintenance of the bidirectional lead screw 4 is required, lubricating oil is injected into the first piston rod 24 and the second piston rod 25 by opening the inspection door. By moving the first screw seat 5 and the corresponding second screw seat 6 towards the side close to each other, it can drive the first piston rod 24 and the corresponding second piston rod 25 to move towards the side close to each other. At this time, the first piston rod 24 and the second piston rod 25 can slide in the piston cylinder 26, and can inject the lubricating oil in the piston cylinder 26 between the mounting shaft 11 and the thrust bearing 12 through the piston plate by the oil injection pipe 27, so as to achieve lubricating the thrust bearing 12 and the mounting shaft 11, and can achieve the purpose of facilitating the disassembly of the thrust bearing 12.

Claims

1. A disassembly tool for the thrust bearing of a rolling mill housing, characterized in that, It includes a base (1), a cavity (2) is formed in the base (1), through holes (3) are formed in both the top and bottom of the base (1), the through holes (3) are communicated with the cavity (2), a bidirectional mechanism and a clamping mechanism are arranged in the cavity (2), and maintenance doors are arranged on both the front and rear sides of the base (1). Two fixed seats (13) are fixedly installed on the right inner wall of the cavity (2), and the same rotating shaft (14) is rotatably installed on the two fixed seats (13). Both ends of the rotating shaft (14) extend to the outside of the corresponding fixed seats (13). A rotating mechanism is arranged on the right side of the base (1). A support frame (20) is fixedly installed on the top of the base (1), a jacking mechanism is arranged on the support frame (20), a mounting shaft (11) is arranged in the through hole (3), and a thrust bearing (12) is sleeved on the mounting shaft (11).

2. The dismounting tool for the mill screwdown thrust bearing according to claim 1, characterized in that The bidirectional mechanism includes two bidirectional screws (4), two first screw seats (5) and two second screw seats (6). Two bidirectional screws (4) are rotatably installed on the left inner wall of the cavity (2), the right end of the bidirectional screw (4) is rotatably connected with the right inner wall of the cavity (2), the through hole (3) is located between the two bidirectional screws (4), a first screw seat (5) and a second screw seat (6) are threadedly sleeved on the bidirectional screw (4), the first screw seat (5) is located on the left side of the second screw seat (6), a second gear driving mechanism is arranged between the bidirectional screw (4) and the rotating shaft (14), and an oil injection mechanism is arranged between the first screw seat (5) and the second screw seat (6).

3. A dismounting tool for a mill screwdown thrust bearing according to claim 2, characterized in that, The clamping mechanism includes a first connecting seat (7), a first clamping seat (8), a second connecting seat (9) and a second clamping seat (10). The same first connecting seat (7) is fixedly installed between the two first screw seats (5), the same second connecting seat (9) is fixedly installed between the two second screw seats (6), a first clamping seat (8) is fixedly installed on one side of the first connecting seat (7) close to the through hole (3), a second clamping seat (10) is fixedly installed on one side of the second connecting seat (9) close to the through hole (3), and the first clamping seat (8), the second clamping seat (10) are adapted to the thrust bearing (12).

4. A disassembly tool for the mill screwdown thrust bearing according to claim 1, characterized in that The rotating mechanism includes a rotating rod (15) and a rotating knob (16). The rotating rod (15) is rotatably installed on the right side of the base (1), the left end of the rotating rod (15) extends into the cavity (2), the rotating knob (16) is fixedly installed on the right end of the rotating rod (15), and a first gear driving mechanism is arranged between the rotating rod (15) and the rotating shaft (14).

5. A dismounting tool for a rolling mill screw down thrust bearing according to claim 4, characterized in that The first gear driving mechanism includes two first bevel gears (17). First bevel gears (17) are fixedly sleeved on both the left end of the rotating rod (15) and the rotating shaft (14). The first bevel gears (17) are located between the two fixed seats (13), and the two first bevel gears (17) are meshed with each other.

6. The dismounting tool for the mill screwdown thrust bearing according to claim 2, characterized in that, The second gear driving mechanism includes two second bevel gears (18) and two third bevel gears (19). A second bevel gear (18) is fixedly sleeved on the bidirectional screw rod (4). Third bevel gears (19) are fixedly sleeved at both ends of the rotating shaft (14). The second bevel gear (18) is located on the right side of the corresponding second screw rod seat (6), and the second bevel gear (18) meshes with the corresponding third bevel gear (19).

7. A dismounting tool for a rolling mill screwdown thrust bearing according to claim 1, wherein, The jacking mechanism includes a lifting screw rod (21) and a jacking bead (22). The lifting screw rod (21) is threadedly installed at the top of the support frame (20). The bottom end of the lifting screw rod (21) extends to the inside of the support frame (20). A jacking bead (22) is arranged at the bottom end of the lifting screw rod (21). The jacking bead (22) is adapted to the top end of the mounting shaft (11). A hexagonal turning head (23) is arranged at the top end of the lifting screw rod (21).

8. The dismounting tool for the rolling mill screwdown thrust bearing according to claim 2, characterized in that, The oil injection mechanism includes a first piston rod (24), a second piston rod (25), a piston cylinder (26) and an oil injection pipe (27). The first piston rod (24) is fixedly installed on the right side of the first screw rod seat (5). The second piston rod (25) is fixedly installed on the left side of the second screw rod seat (6). The first piston rod (24) and the second piston rod (25) are slidably sleeved with the same piston cylinder (26). Piston plates are fixedly installed at the adjacent ends of the first piston rod (24) and the second piston rod (25). The piston plates are slidably connected to the inner wall of the corresponding piston cylinder (26). An oil injection pipe (27) is arranged at the top of the piston cylinder (26). The top end of the oil injection pipe (27) extends above the base (1). The top end of the oil injection pipe (27) is adapted to the mounting shaft (11). A one-way valve is arranged in the oil injection pipe (27).

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