Auxiliary device of dismounting tool for rolling mill bolt

Abstract

The utility model belongs to the technical field of disassembling auxiliary devices, and particularly discloses an auxiliary device of a disassembling tool for rolling mill bolts, which comprises a chassis, a disassembling tool body and a connecting rope, two support frames are arranged on the chassis, a rotating shaft is rotatably connected onto the two support frames, a track plate is fixedly connected onto the rotating shaft, and a balancing weight is slidably connected onto the track plate. The balancing weight is in threaded connection with a screw rod, one end of the screw rod is rotationally connected with the track plate, the other end of the screw rod rotationally penetrates through the track plate, the rotating shaft is detachably connected with an L-shaped supporting rod, two pulleys are arranged on the L-shaped supporting rod, a winding assembly used for winding a connecting rope is arranged on the chassis, and the free end of the connecting rope is connected with the disassembling tool body along the two pulleys. In order to solve the problems that an existing rolling mill bolt dismounting tool is heavy in weight, an operator is prone to fatigue during operation, and equipment is prone to being damaged by mistakes, the weight of the dismounting tool is shared through the balancing weight and the connecting rope, physical output of the operator is reduced, and working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of disassembly auxiliary devices, specifically to an auxiliary device for disassembling rolling mill bolts. Background Technology

[0002] Currently, the removal of rolling mill bolts is a critical part of the equipment maintenance process. Initially, the operation involved operators holding ordinary wrenches and manually turning them to apply torque to the bolts and loosen them. However, this method is extremely difficult when dealing with large-diameter bolts of M36 and above, as the torque required for removal is too high. This not only results in low efficiency but also easily causes operator fatigue.

[0003] With the development of industrial technology, mechanized disassembly tools have been gradually introduced into the disassembly of rolling mill bolts, including pneumatic wrenches, hydraulic wrenches and electric wrenches. Among them, the pneumatic wrench is one of the more widely used. It uses compressed air as a power source to drive the internal impact mechanism to generate high-frequency, high-intensity impact force, thereby quickly disassembling or installing bolts.

[0004] However, the aforementioned disassembly tools are quite heavy due to their design to accommodate high torque output. This puts a physical burden on operators who hold the disassembly tools for extended periods, and may even lead to operational errors due to insufficient physical strength, thereby damaging the equipment. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary device for a bolt removal tool for rolling mills, in order to solve the problem that the current removal tools are too heavy during use, which can easily cause physical burden to the operator, and even lead to operational errors due to physical inability to support the weight, thereby damaging the equipment.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: an auxiliary device for a dismantling tool for rolling mill bolts, comprising a chassis, a dismantling tool body, and a connecting rope. Two support frames are mounted on the chassis, and a rotating shaft is rotatably connected to each support frame. A track plate is fixedly connected to the rotating shaft, and a counterweight is slidably connected to the track plate. A screw is threaded onto the counterweight, with one end of the screw rotatably connected to the track plate and the other end rotatably penetrating the track plate. An L-shaped support rod is detachably connected to the rotating shaft, and two pulleys are mounted on the L-shaped support rod. A winding assembly for winding the connecting rope is mounted on the chassis, and the free end of the connecting rope is connected to the dismantling tool body along the two pulleys.

[0007] The working principle of this utility model is as follows: when it is necessary to disassemble the rolling mill bolts, the disassembly tool body is first tied to the free end of the connecting rope. Then the operator moves the device to the front of the rolling mill. The operator then disassembles the bolts by operating the disassembly tool body. The counterweight and the connecting rope play a role in sharing the weight, thereby reducing the physical burden on the operator. When the rolling mill requires a lower bolt height, the screw is rotated counterclockwise. As the screw rotates, the counterweight slides towards the disassembly tool body. This sliding motion causes the track plate and L-shaped support rod to rotate counterclockwise, lowering the L-shaped support rod and thus adjusting the height of the disassembly tool body. Once the disassembly tool body is lowered to the appropriate position, the screw rotation is stopped. Conversely, when the rolling mill requires a higher bolt height, the screw is rotated clockwise. As the screw rotates, the counterweight slides in the opposite direction to the disassembly tool body. This sliding motion causes the track plate and L-shaped support rod to rotate clockwise, raising the L-shaped support rod and thus adjusting the height of the disassembly tool body. Once the disassembly tool body is raised to the appropriate position, the screw rotation is stopped.

[0008] The beneficial effects of this utility model are as follows: by sharing the weight of the disassembly tool with the counterweight and connecting rope, the physical exertion of the operator is reduced, the work efficiency is improved, and the operator's operational errors due to physical exhaustion are avoided, thus protecting the equipment from damage; at the same time, each component can be flexibly adjusted to adapt to different working environments and bolt disassembly requirements.

[0009] Option 2, a preferred embodiment of the basic option, includes a winding roller, a fixed frame on the chassis, the winding roller being rotatably connected to the fixed frame, the connecting rope being wound on the winding roller, and a limiting unit on the fixed frame for restricting the movement of the winding roller. By setting the winding roller, the connecting rope is wound on the winding roller, thereby enabling the operator to precisely control the release and retraction length of the connecting rope during operation.

[0010] Option 3, which is a preferred embodiment of Option 2, includes a ratchet wheel fixedly connected to the winding roller. A pawl for limiting the clockwise rotation of the ratchet wheel is rotatably connected to the fixing frame. By setting the ratchet wheel and pawl, the clockwise rotation of the winding roller can be prevented, ensuring that the connecting rope will not come loose accidentally during use and improving operational safety.

[0011] Option 4, a preferred embodiment of the basic option, features a threaded end on one end of the L-shaped support rod and a threaded hole on the rotating shaft. The threaded end of the L-shaped support rod is threaded into the threaded hole, and a nut is threaded onto the threaded end of the L-shaped support rod, located at the bottom of the rotating shaft. The threaded connection between the L-shaped support rod and the rotating shaft, secured with a nut, facilitates installation and disassembly, and allows adjustment of the height of the L-shaped support rod, thereby adjusting the height of the disassembly tool. When the counterweight has reached its maximum position but further height adjustment is needed, the L-shaped support rod can be moved up and down by rotating the nut to adjust the height.

[0012] Option 5, which is a preferred option of the basic option, has a handle at one end of the screw that extends outside the track plate; the handle at one end of the screw makes it easier to rotate the screw and make the position adjustment of the counterweight more convenient.

[0013] Option 6, which is a preferred option of the basic option, is provided with casters at all four corners of the chassis bottom; the casters on the chassis facilitate the movement of the auxiliary device.

[0014] Option 7, which is a preferred option of Option 2, is provided with a pusher on the fixed frame; the pusher on the fixed frame makes it easier for the operator to push the entire auxiliary device, improving the mobility of the device. Attached Figure Description

[0015] Figure 1 This is a perspective view of an auxiliary device for a rolling mill bolt disassembly tool according to the present invention;

[0016] Figure 2 This is a perspective view of another angle of the auxiliary device for dismantling bolts for a rolling mill according to this utility model;

[0017] Figure 3 This is a front view of an auxiliary device for dismantling rolling mill bolts according to this utility model;

[0018] Figure 4 This is a top view of an auxiliary device for disassembling bolts for a rolling mill, according to this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below through specific embodiments:

[0020] The reference numerals in the accompanying drawings of the instruction manual include: 1: chassis; 2: support frame; 3: pivot; 4: track plate; 5: L-shaped support rod; 6: pulley; 7: disassembly tool body; 8: connecting rope; 9: counterweight; 10: screw; 11: winding roller; 12: fixing frame; 13: ratchet; 14: pawl; 15: nut; 16: handle; 17: caster wheel; 18: push handle.

[0021] like Figures 1 to 4The diagram shows an auxiliary device for a bolt removal tool used in rolling mills, comprising a chassis 1, an L-shaped support rod 5, a removal tool body 7, a connecting rope 8, and a counterweight 9. Two support frames 2 are fixedly connected to the chassis 1, and rotating shafts 3 are rotatably connected to the two support frames 2. A track plate 4 is fixedly connected to the rotating shaft 3. The inner side of the track plate 4 has symmetrically formed grooves. Sliding blocks are fixedly connected to both sides of the counterweight 9, and the sliding blocks are slidably connected to the grooves. A screw 10 is threaded onto the counterweight 9. One end of the screw 10 is connected to a bearing on the track plate 4, and the other end rotatably passes through the track plate 4. A handle 16 is fixedly connected to the end extending outside the track plate 4. One end of the L-shaped support rod 5 is threaded, and a threaded hole is formed on the rotating shaft 3. The threaded end of the L-shaped support rod 5 is threaded into the threaded hole, and a nut 15 is threaded onto the threaded end of the L-shaped support rod 5. The nut 15 is located on the rotating shaft 3. At the bottom of shaft 3, a winding assembly for winding the connecting rope 8 is provided on the chassis 1. The winding assembly includes a winding roller 11. A fixed frame 12 is fixedly connected to the chassis 1. The winding roller 11 is rotatably connected to the fixed frame 12. The connecting rope 8 is wound on the winding roller 11. Two pulleys 6 are fixedly connected to the L-shaped support rod 5. The free end of the connecting rope 8 is tied to the disassembly tool body 7 along the two pulleys 6. The connecting rope 8 is a telescopic elastic rope. A limiting unit for restricting the movement of the winding roller 11 is provided on the fixed frame 12. The limiting unit includes a ratchet 13. The ratchet 13 is fixedly connected to one end of the winding roller 11 extending to the outside of the fixed frame 12. A pawl 14 for restricting the clockwise rotation of the ratchet 13 is rotatably connected to the fixed frame 12. Universal wheels 17 are provided at the four corners of the bottom of the chassis 1. Brake pads are provided on the universal wheels 17. A pusher 18 is fixedly connected to the fixed frame 12.

[0022] The implementation method of this embodiment is as follows: When it is necessary to disassemble the rolling mill bolts, the disassembly tool body 7 is first tied to the free end of the connecting rope 8. Then, the operator pushes the device with the pusher 18 to move it to the front of the rolling mill. Then, the operator disassembles the bolts by operating the disassembly tool body 7. The counterweight 9 and the connecting rope 8 play the role of sharing the weight, thereby reducing the physical burden on the operator.

[0023] When the rolling mill requires a lower bolt height, the handle 16 is rotated counterclockwise to rotate the screw 10. As the screw 10 rotates, the counterweight 9 slides towards the disassembly tool body 7. With the sliding of the counterweight 9, the track plate 4 and the L-shaped support rod 5 rotate counterclockwise, lowering the height of the L-shaped support rod 5, thereby adjusting the height of the disassembly tool body 7. Once the height of the disassembly tool body 7 is lowered to the appropriate position, the screw 10 is stopped from rotating. When the rolling mill requires a higher bolt height, the handle 16 is rotated clockwise to rotate the screw 10. As the screw 10 rotates, the counterweight 9 slides in the opposite direction to the disassembly tool body 7. With the sliding of the counterweight 9, the track plate 4 and the L-shaped support rod 5 rotate clockwise, raising the height of the L-shaped support rod 5, thereby adjusting the height of the disassembly tool body 7. Once the height of the disassembly tool body 7 is raised to the appropriate position, the screw 10 is stopped from rotating.

[0024] When the counterweight 9 slides to its limit to the right, but the height of the disassembly tool body 7 still needs to be increased, first lift the pawl 14 upwards. Under the action of the weight of the disassembly tool body 7, the connecting rope 8 wound on the winding roller 11 is stretched and lengthened. Then, rotate the nut 15 clockwise with a wrench to move the L-shaped support rod 5 upwards, thereby further increasing the height of the disassembly tool body 7. When the counterweight 9 slides to its limit to the left, but the height of the disassembly tool body 7 still needs to be decreased, first rotate the winding roller 11 to wind the connecting rope 8 onto the winding roller 11, thereby shortening the length of the connecting rope 8. Then, rotate the nut 15 counterclockwise with a wrench to move the L-shaped support rod 5 downwards, thereby further decreasing the height of the disassembly tool body 7.

[0025] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An auxiliary device for a mill bolt dismounting tool, characterized in that, Including chassis (1), dismounting tool body (7) and connecting rope (8), two support frames (2) are arranged on the chassis (1), two rotating shafts (3) are rotatably connected on the support frames (2), track plates (4) are fixedly connected on the rotating shafts (3), counterweights (9) are slidably connected on the track plates (4), screw rods (10) are threadedly connected on the counterweights (9), one end of the screw rod (10) is rotatably connected with the track plate (4), the other end is rotatably penetrated through the track plate (4), L-shaped support rods (5) are detachably connected on the rotating shafts (3), two pulleys (6) are arranged on the L-shaped support rods (5), a winding assembly for winding the connecting rope (8) is arranged on the chassis (1), the free end of the connecting rope (8) is connected with the dismounting tool body (7) along the two pulleys (6).

2. An auxiliary device for a mill bolt dismounting tool according to claim 1, characterized in that The winding assembly comprises a winding roller (11), a fixing frame (12) is arranged on the chassis (1), the winding roller (11) is rotatably connected with the fixing frame (12), the connecting rope (8) is wound on the winding roller (11), and a limiting unit for limiting the movement of the winding roller (11) is arranged on the fixing frame (12).

3. An auxiliary device for a mill bolt dismounting tool according to claim 2, characterized in that The limiting unit comprises a ratchet wheel (13), the ratchet wheel (13) is fixedly connected with the winding roller (11), and a pawl (14) for limiting the clockwise rotation of the ratchet wheel (13) is rotatably connected on the fixing frame (12).

4. An auxiliary device for a mill bolt dismounting tool according to claim 1, characterized in that, One end of the L-shaped support rod (5) is provided with a thread, a threaded hole is arranged on the rotating shaft (3), the threaded end of the L-shaped support rod (5) is threadedly connected with the threaded hole, a nut (15) is threadedly connected with the threaded end of the L-shaped support rod (5), and the nut (15) is located at the bottom of the rotating shaft (3).

5. An auxiliary device for a mill bolt dismounting tool according to claim 1, characterized in that, The end of the screw rod (10) extending out of the track plate (4) is provided with a handle (16).

6. An auxiliary device for a mill bolt dismounting tool according to claim 1, characterized in that, Universal wheels (17) are arranged at the four corners of the bottom of the chassis (1).

7. An auxiliary device for a mill bolt dismounting tool according to claim 2, characterized in that A push handle (18) is arranged on the fixing frame (12).

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