An automatic hook-removing mechanism for changing rolls during rough rolling

Abstract

The invention discloses an automatic unhooking mechanism for changing rolls of rough rolling, comprising a roll changing trolley and a rotating block, wherein one side of the roll changing trolley is screwed to a mounting base by a fixing bolt, and one side of the mounting base is connected to a roller hook by rotating a shaft, and a unhooking component is provided on the top surface of the mounting base. When the hydraulic rod retracts, it drives the fisheye bearing to slide backward in the horizontal sliding groove of the two sets of stroke plates, and when the fisheye bearing moves, one end of the roller hook rotates at the front end of the mounting base with the rotating shaft as the center point. At this time, the roller hook rotates counterclockwise and is in a decoupled state of the roughing roller, and the front end of the hydraulic rod pushes the fisheye bearing to slide forward in the horizontal sliding groove of the two sets of stroke plates. When the fisheye bearing moves, one end of the roller hook rotates at the front end of the mounting base with the rotating shaft as the center point. At this time, the roller hook rotates clockwise and is in a hooked state of the roughing roller, thereby completing the replacement operation of the roughing working roll, which is more convenient and greatly improves the efficiency of replacing the roughing working roll.

Description

Technical Field

[0001] The invention belongs to the technical field of rolling equipment, and in particular relates to an automatic hook-removing mechanism for rough rolling roll change. Background Art

[0002] In order to ensure the quality of rolled products and production efficiency, the stainless steel hot-rolled strip line needs to replace the roughing rolls after being used for a period of time. When replacing the roughing rolls, workers need to manually unhook the roll hooks on the roll-changing trolley. Since the roll hooks are connected to the roughing rolls, there is a possibility that the workers' hand strength is insufficient or the unhooking angle is incorrect during unhooking, resulting in the roughing roll hooks not being able to hook many times. This not only wastes time in replacing the roughing rolls, but also poses great risks and hidden dangers, and is prone to safety accidents. Summary of the Invention

[0003] The object of the present invention is to provide an automatic hook-removing mechanism for changing rolls in rough rolling to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an automatic hook-removing mechanism for changing rolls during rough rolling, comprising:

[0005] A roller changing trolley is provided, wherein one side of the roller changing trolley is fixed with a mounting base by means of fixing bolts, and one side of the mounting base is rotatably connected with a roller hook via a rotating shaft. A hook-removing assembly for controlling the rotation of the roller hook is provided on the top surface of the mounting base. The hydraulic cylinder of the hook-removing assembly drives the stroke plate connected to the top of the roller hook to move, so that the roller hook rotates on the surface of the mounting base with the rotating shaft as the center point, thereby realizing the unhooking or hooking of the roughing roller by the roller hook.

[0006] A rotating block, wherein the rotating block is rotatably connected to the bottom of the roller hook through a rotating bracket, and the top of the rotating bracket is connected to the mounting base. A self-locking motor is provided on one side of the rotating bracket, and the output shaft of the self-locking motor drives the rotating block to rotate. The rotating block rotates and contacts the roller hook, so that the rotating rotating block assists the roller hook in rotating, and the rotating block can support the rear end of the roller hook after it is reset;

[0007] The hook removal assembly includes a motor and a fisheye bearing. The motor is arranged on the surface of the mounting base and connected to the hydraulic cylinder. The piston rod of the hydraulic cylinder is connected to the fisheye bearing.

[0008] The travel plates are provided in two groups and are both provided on the top of the roller hook. The fisheye bearing is provided between the two groups of travel plates and is slidably connected to a horizontal sliding groove provided on the surface of the travel plate.

[0009] Preferably, a driving motor is provided on the surface of the roller-changing trolley, a plurality of driving wheels are provided on the bottom of the roller-changing trolley, and every two sets of driving wheels are connected by a driving shaft.

[0010] Preferably, the output shaft of the drive motor is in driving connection with one of the drive shafts.

[0011] Preferably, the bottom of the hydraulic cylinder is rotatably connected to a support frame, and the bottom end of the support frame is screwed and fixed to the mounting base via a locking bolt.

[0012] Preferably, two groups of proximity switches are provided on the surface of the hydraulic cylinder and both groups of proximity switches are electrically connected to the motor.

[0013] Preferably, the surface of the hydraulic cylinder is provided with an oil filling hole for injecting hydraulic oil into the hydraulic cylinder.

[0014] Preferably, an inspection cover is provided on the top of the roller-changing trolley.

[0015] Preferably, a protective pad is provided in the groove on the surface of the roller hook.

[0016] Compared with the prior art, the present invention has the following beneficial effects: when the roughing roll is hooked by the roll hook, the motor drives the hydraulic pump on the surface of the hydraulic cylinder to rotate, pumps the oil in the hydraulic cylinder into the rod cavity of the hydraulic cylinder, and pushes the hydraulic rod to move in the opposite direction, so that the hydraulic rod retracts into the hydraulic cylinder, and when the hydraulic rod retracts, it drives the fisheye bearing to slide backward in the horizontal slide grooves of the two sets of stroke plates, and when the fisheye bearing moves, one end of the roll hook rotates at the front end of the mounting base with the rotating shaft as the center point, and at this time the roll hook rotates counterclockwise and is in a decoupled state with the roughing roll, and the roughing roll can be pulled out and replaced;

[0017] When the replaced roughing roll is installed in place, the staff controls the motor through the operating table to start the work. The motor drives the hydraulic pump on the surface of the hydraulic cylinder to rotate, and the hydraulic oil in the rod cavity is re-pumped into the hydraulic cylinder. The pressure in the hydraulic cylinder increases under the action of the hydraulic oil, so that the hydraulic rod in the hydraulic cylinder is pushed toward the direction of the roll hook. The front end of the hydraulic rod pushes the fisheye bearing to slide forward in the horizontal slide grooves of the two sets of stroke plates. When the fisheye bearing moves, one end of the roll hook rotates at the front end of the mounting base with the rotating shaft as the center point. At this time, the roll hook rotates clockwise and is in a hooked state with the roughing roll, thereby completing the replacement operation of the new roughing working roll. It is more convenient and greatly improves the efficiency of replacing the roughing working roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 This is a structural diagram of the hook removal assembly of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the roller hook of the present invention when it is hooked with the roughing roller;

[0021] Figure 4This is a schematic structural diagram of the present invention when the roller hook is unhooked from the roughing roller.

[0022] In the figure: 1. Roller changing trolley; 2. Fixing bolt; 3. Mounting base; 4. Rotating shaft; 5. Roller hook; 6. Hydraulic cylinder; 7. Stroke plate; 8. Rotating block; 9. Rotating bracket; 10. Hook removal assembly; 11. Motor; 12. Fisheye bearing; 13. Horizontal slide; 14. Driving wheel; 15. Driving shaft; 16. Support frame; 17. Locking bolt; 18. Proximity switch; 19. Oil filling hole; 20. Inspection cover; 21. Protective pad; 22. Driving motor. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The present invention provides Figure 1-4 The rough rolling roll changing automatic hook removing mechanism shown includes:

[0025] A roll-changing trolley 1 is provided with a mounting base 3 screwed to one side of the roll-changing trolley 1 via a fixing bolt 2. A roll hook 5 is rotatably connected to one side of the mounting base 3 via a rotating shaft 4. A hook-removing assembly 10 for controlling the rotation of the roll hook 5 is provided on the top surface of the mounting base 3. The hydraulic cylinder 6 of the hook-removing assembly drives a stroke plate 7 connected to the top of the roll hook 5 to move, so that the roll hook 5 rotates on the surface of the mounting base 3 with the rotating shaft 4 as the center point, thereby realizing the unhooking or hooking of the roughing roll by the roll hook 5.

[0026] The rotating block 8 is rotatably connected to the bottom of the roller hook 5 through the rotating bracket 9, and the top of the rotating bracket 9 is connected to the mounting base 3. A self-locking motor is provided on one side of the rotating bracket 9, and the output shaft of the self-locking motor drives the rotating block 8 to rotate. The rotating block 8 rotates and contacts with the roller hook 5, so that the rotating rotating block 8 assists the roller hook 5 to rotate, and the rotating block 8 can support the rear end of the roller hook 5 after it is reset.

[0027] The hook removal assembly 10 includes a motor 11 and a fisheye bearing 12. The motor 11 is arranged on the surface of the mounting base 3 and connected to the hydraulic cylinder 6. The piston rod of the hydraulic cylinder 6 is connected to the fisheye bearing 12. The speed of the motor 11 is 910 r / min, using a three-phase 380V voltage and a power of 1.1KW. The hydraulic cylinder 6 and the motor 11 together form an electric cylinder with an effective stroke of 150mm, a fixed thrust of 10KN, and a rated speed of 70mm / s.

[0028] The thrust of the hydraulic cylinder 6 is 10KN, which is just enough to hang the roller hook 5 firmly on the step of the roughing work roll. The effective stroke of the hydraulic cylinder 6 is 150mm. This distance is just enough to allow the fisheye bearing 12 to slide to the end of the stroke plate 8 and be level with the roller hook 5. If the stroke is short, the roller hook 5 cannot be hooked up. If the stroke is too long, the roller hook 5 will be downward, which may easily damage the hook and the automatic hook removal device.

[0029] There are two groups of travel plates 7 and both are arranged on the top of the roller hook 5. The fisheye bearing 12 is arranged between the two groups of travel plates 7 and is slidably connected to the horizontal slide groove 13 provided on the surface of the travel plate 7. The travel plate 7 is made of carbon steel. The two travel plates 7 are connected in a clamping form to the push pin connecting end on the fisheye bearing 12 to maintain the stable sliding cooperation between the fisheye bearing 9 and the travel plate 7.

[0030] A driving motor 22 is provided on the surface of the roller changing trolley 1, and a plurality of driving wheels 14 are provided at the bottom of the roller changing trolley 1, and each two groups of driving wheels 14 are connected by a driving shaft 15. The output shaft of the driving motor 22 is transmission-connected to one group of driving shafts 15. When the driving motor 22 works, the transmission-connected driving shaft 15 can be driven to rotate, and the driving wheel 14 can be driven to rotate through the driving shaft 15, so that the roller changing trolley 1 can be moved.

[0031] The bottom of the hydraulic cylinder 6 is rotatably connected to a support frame 16 , and the bottom end of the support frame 16 is screwed and fixed to the mounting base 3 via a locking bolt 17 . The support frame 16 can maintain the stability of the operation of the unhooking assembly 10 .

[0032] Two sets of proximity switches 18 are provided on the surface of the hydraulic cylinder 6 and both sets of proximity switches 18 are electrically connected to the motor 11. When the proximity switches 18 on the surface of the hydraulic cylinder 6 detect a signal, the motor 11 can be controlled to stop running. The two sets of proximity switches 18 are P+F German NCB10-30GM60-Z0-V1 sensors.

[0033] The surface of the hydraulic cylinder 6 is provided with an oil filling hole 19 for injecting hydraulic oil into the hydraulic cylinder 6. The oil filling hole 19 is a G1 / 4 plug. When in use, it is opened to replenish oil to the hydraulic cylinder 6. After the hydraulic oil is injected into the hydraulic cylinder 6 through the oil filling hole 19, the operation of the hydraulic cylinder 6 is kept to smoothly propel the hydraulic rod.

[0034] An inspection cover 20 is provided on the top of the roller-changing trolley 1 , through which the interior of the roller-changing trolley 1 can be easily inspected.

[0035] A protective pad 21 is provided in the groove on the surface of the roller hook 5. When the roller hook 5 and the roughing roller are in a hooked state, the rubber protective pad 21 in the groove of the roller hook 5 can effectively reduce the friction between the roller hook 5 and the roughing roller, thereby reducing wear.

[0036] The automatic unhooking mechanism for changing roughing rolls, when the roughing roll is hooked by the roll hook 5, the motor 11 drives the hydraulic pump on the surface of the hydraulic cylinder 6 to rotate, pumps the oil in the hydraulic cylinder 6 into the rod cavity of the hydraulic cylinder 6, and pushes the hydraulic rod to move in the opposite direction, so that the hydraulic rod retracts into the hydraulic cylinder 6, and when the hydraulic rod retracts, it drives the fisheye bearing 12 to slide backward in the horizontal slide grooves 13 of the two sets of stroke plates 7, and when the fisheye bearing 12 moves, one end of the roll hook 5 rotates at the front end of the mounting base 3 with the rotating shaft 4 as the center point, and at this time the roll hook 5 rotates counterclockwise and is in a state of being unhooked from the roughing roll, and the roughing roll can be pulled out at this time and the roll can be changed;

[0037] When the hydraulic cylinder 6 drives the roller hook 5 to rotate counterclockwise, the self-locking motor provided on one side of the rotating bracket 9 can be started, and the output shaft of the self-locking motor can drive the rotating block 8 on the surface of the rotating bracket 9 to rotate clockwise for one circle and then rotate to one side of the roller hook 5 and contact one end of the roller hook 5, and under continuous rotation, the auxiliary hydraulic cylinder 6 drives the roller hook 5 to rotate, thereby ensuring that the roller hook 5 remains stable during the rotation process through synergistic action.

[0038] When the replaced roughing roll is installed in place, the staff controls the motor 11 through the operating table to start the work. The operation of the motor 11 drives the hydraulic pump on the surface of the hydraulic cylinder 6 to rotate, and the hydraulic oil in the rod cavity is pumped back into the hydraulic cylinder 6. The pressure in the hydraulic cylinder 6 increases under the action of the hydraulic oil, thereby pushing the hydraulic rod in the hydraulic cylinder 6 toward the direction of the roll hook 5. The front end of the hydraulic rod pushes the fisheye bearing 12 to slide forward in the horizontal slide groove 13 of the two sets of stroke plates 7. When the fisheye bearing 12 moves, one end of the roll hook 5 rotates at the front end of the mounting base 3 with the rotating shaft 4 as the center point. At this time, the roll hook 5 rotates clockwise and is in a hooked state with the roughing roll, thereby completing the replacement operation of the new roughing working roll. It is more convenient and greatly improves the efficiency of replacing the roughing working roll, and shortens the time for personnel to manually lift the hook, saving about one minute each time. Calculated based on changing the roll once a day, about 365 minutes of roughing roll replacement time is saved each year.

[0039] When the roller hook 5 and the roughing roller are in a hooked state, the self-locking motor can be started to drive the rotating block 8 to rotate counterclockwise for one circle, then rotate to the bottom of the roller hook 5 and contact with the bottom of the roller hook 5, and the self-locking motor can be stopped. When the self-locking motor stops working, it can be automatically locked to prevent the rotating block 8 from rotating accidentally, thereby supporting the roller hook 5 through the rotating block 8 at the bottom of the roller hook 5, which can help to enhance the stability and load-bearing capacity of the roller hook 5 and prevent unnecessary movement or deformation when subjected to external force.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic hook-removing mechanism for changing rolls during rough rolling, characterized in that: include: A roller changing trolley (1), wherein one side of the roller changing trolley (1) is screwed with a mounting base (3) via a fixing bolt (2), and one side of the mounting base (3) is rotatably connected to a roller hook (5) via a rotating shaft (4), and a hook-off assembly (10) for controlling the rotation of the roller hook (5) is provided on the top surface of the mounting base (3), and a stroke plate (7) connected to the top of the roller hook (5) is driven to move by a hydraulic cylinder (6) of the hook-off assembly, so that the roller hook (5) rotates on the surface of the mounting base (3) with the rotating shaft (4) as the center point, thereby realizing the unhooking or hooking of the roughing roller by the roller hook (5); A rotating block (8), wherein the rotating block (8) is rotatably connected to the bottom of the roller hook (5) through a rotating bracket (9), and the top of the rotating bracket (9) is connected to the mounting base (3); a self-locking motor is provided on one side of the rotating bracket (9), and the output shaft of the self-locking motor drives the rotating block (8) to rotate, and the rotating block (8) rotates and contacts the roller hook (5), so that the rotating rotating block (8) assists the roller hook (5) to rotate, and the rotating block (8) can support the rear end of the roller hook (5) after it is reset; The hook removal assembly (10) comprises a motor (11) and a fisheye bearing (12); the motor (11) is arranged on the surface of the mounting base (3) and is connected to the hydraulic cylinder (6); the piston rod of the hydraulic cylinder (6) is connected to the fisheye bearing (12); The travel plates (7) are provided in two groups and are both provided on the top of the roller hook (5); the fisheye bearing (12) is provided between the two groups of travel plates (7) and is slidably connected to a horizontal slide groove (13) provided on the surface of the travel plate (7).

2. The automatic hook-removing mechanism for rough rolling roll change according to claim 1, characterized in that: A driving motor (22) is provided on the surface of the roller-changing trolley (1), and a plurality of driving wheels (14) are provided on the bottom of the roller-changing trolley (1), and each two sets of driving wheels (14) are connected via a driving shaft (15).

3. The automatic hook-removing mechanism for rough rolling roll change according to claim 2, characterized in that: The output shaft of the drive motor (22) is in driving connection with one of the drive shafts (15).

4. The automatic hook-removing mechanism for changing rolls during rough rolling according to claim 1, characterized in that: The bottom of the hydraulic cylinder (6) is rotatably connected to a support frame (16), and the bottom end of the support frame (16) is screwed and fixed to the mounting base (3) via a locking bolt (17).

5. The automatic hook-removing mechanism for rough rolling roll change according to claim 1, characterized in that: Two groups of proximity switches (18) are provided on the surface of the hydraulic cylinder (6), and both groups of proximity switches (18) are electrically connected to the motor (11).

6. The automatic hook-removing mechanism for changing rolls during rough rolling according to claim 1, characterized in that: An oil injection hole (19) for injecting hydraulic oil into the hydraulic cylinder (6) is provided on the surface of the hydraulic cylinder (6).

7. The automatic hook-removing mechanism for rough rolling roll change according to claim 1, characterized in that: An inspection cover (20) is provided on the top of the roller changing trolley (1).

8. The automatic hook-removing mechanism for rough rolling roll change according to claim 1, characterized in that: A protective pad (21) is provided in the groove on the surface of the roller hook (5).

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