A roll preparation tool

Abstract

The present application relates to the technical field of roll replacement, in particular to a roll replacement tool, which comprises a limiting rod, a handle is installed at the bottom end of the limiting rod, an adjusting rod is connected in the limiting rod through a thread, an installation plate is fixedly connected at the top end of the adjusting rod, a pair of clamping plates are slidably connected in the installation plate, an adjusting assembly is installed in the clamping plate, the adjusting assembly is used to adjust the distance between the pair of clamping plates, and a clamping assembly is fixedly connected at the side of the pair of clamping plates away from each other; so that the staff does not have to directly contact the roll, the safety of the staff is improved, the working range of the staff is prolonged, and the roll is suitable for some narrow installation positions; meanwhile, the tool can achieve the principle of a lever, the contact point with the roll bearing seat is used as a fulcrum, the effect of a lever is achieved, compared with directly holding a lever, the tool is more labor-saving, and the natural stability effect is better.

Description

Technical Field

[0001] This invention relates to the field of roll replacement technology, and in particular to a roll preparation tool. Background Technology

[0002] A rolling mill is a mechanical device used to complete the steel rolling process from raw materials to finished products. It has the advantages of high mill rigidity, high strip quality, and time-saving and labor-saving roll changing.

[0003] During the use of some rolling mills, it is inevitable to need to replace the rolls. Especially for some models of rolling mills, the replacement of rolls is often very frequent. Currently, the replacement of large rolls requires the use of overhead cranes. During the process of overhead cranes lifting rolls, the rolls inevitably sway. If the ground command personnel are not in the right position or the crane operator's vision is obstructed and he operates blindly, it will lead to various safety accidents.

[0004] To address the aforementioned issues, some personnel currently replace the rolls by hand. While this method reduces roll swaying to some extent, the rolls are heavy, and the personnel's hands often sway along with them, making the method less than ideal. Furthermore, as the roll installation progresses, the rolls need to be continuously moved to the installation position, requiring personnel to move as well. In the confined space of the roll-changing vehicle, this can easily lead to hand injuries or instability and falls, endangering employee safety. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the existing technology requires manual operation of the rolls during the roll replacement process, which poses a significant safety hazard and is not very effective.

[0006] To solve the above-mentioned technical problems, the present invention provides a roll replacement tool, including a limiting rod with a handle at its bottom end. An adjusting rod is threadedly connected inside the limiting rod, and a mounting plate is fixedly connected to the top of the adjusting rod. A pair of clamping plates are slidably connected inside the mounting plate, and an adjusting assembly is installed inside the clamping plate. The adjusting assembly is used to adjust the distance between the pair of clamping plates. A snap-fit ​​assembly is fixedly connected to the opposite side of each pair of clamping plates, and the snap-fit ​​assembly is used to snap into the hole of the bearing seat of the roll to be replaced. During operation, the employee first needs to rotate the adjusting rod to adjust the overall length of the tool according to their needs. Once the appropriate length is reached, rotation is stopped. Then, the employee holds the handle and lifts the entire tool. Depending on the roll installation progress, two limiting methods can be selected: one is to adjust the distance between the pair of clamping plates beforehand using the adjusting assembly so that it matches the width of the bearing seat of the roll to be replaced. The invention employs two methods: First, the bearing housing is fitted between a pair of clamping plates to limit the movement of the roll. This method effectively limits the roll's sway. Second, a snap-fit ​​assembly is used. By inserting the snap-fit ​​assembly into the hole of the bearing housing of the roll to be replaced, the bearing housing is hooked, thus limiting the roll. This method is suitable when the employee's own space is limited and the limiting rod cannot be used for limiting. In this embodiment of the invention, the working range of the clamping plate and snap-fit ​​assembly is extended through the cooperation of the limiting rod, handle, and adjusting rod, thereby achieving the following beneficial effects: First, the employee does not need to directly contact the roll, improving employee safety and extending the employee's working range, which is suitable for some rolls with narrow installation positions. Second, the use of the tool achieves a lever-like principle, using the contact point with the roll bearing housing as the fulcrum, achieving a lever-like effect, which is more labor-saving than directly holding a lever by hand, and naturally has a better stability effect.

[0007] In one embodiment of the present invention, the adjusting assembly includes a pair of interlocking threaded rods with opposite thread directions. The pair of threaded rods are threadedly connected to a pair of clamping plates, and a limiting disc and a rotating disc are fixedly connected to opposite ends of the pair of threaded rods. During operation, when the distance between the pair of clamping plates needs to be adjusted, the employee can rotate the rotating disc. The rotation of the rotating disc causes the pair of interlocking threaded rods to rotate together. Since the threaded rods are threadedly connected to the clamping plates and the thread directions of the pair of threaded rods are opposite, the clamping plates will move closer or further apart, thus achieving the effect of autonomously adjusting the distance between the pair of clamping plates, making the tool more adaptable. The limiting disc serves as a limiting device.

[0008] In one embodiment of the present invention, a fastening ring is installed on the outside of the pair of threaded rods at the interlocking position; during operation, by installing the fastening ring on the outside of the pair of threaded rods, the interlocking position of the pair of threaded rods can be protected, preventing the interlocking position of the threaded rods from being corroded and damaged during daily use, and facilitating later disassembly and maintenance.

[0009] In one embodiment of the present invention, a limiting plate and a mating plate are respectively fixed to one side of the pair of clamping plates that are close to each other. The limiting plate and the mating plate are slidably connected to each other and cooperate with each other. During operation, as the pair of clamping plates move closer and further apart, the limiting plate and the mating plate also slide relative to each other. Through the cooperation design of the limiting plate and the mating plate, when the bearing seat is snapped in place, the bearing seat can be prevented from directly contacting the adjustment component, thereby protecting the adjustment component and improving the service life of the equipment.

[0010] In one embodiment of the present invention, the snap-fit ​​assembly includes a snap-fit ​​post, and one end of the snap-fit ​​post near the clamping plate is threadedly connected to a limiting ring, the limiting ring being fixedly connected to the clamping plate. During operation, by snapping the snap-fit ​​post into the hole of the bearing seat, the roll can be limited. Due to the threaded connection between the snap-fit ​​post and the limiting ring, the snap-fit ​​post can be removed and replaced after wear.

[0011] In one embodiment of the present invention, a guide ball is connected to the end of the snap-fit ​​post away from the limiting ring. The guide ball is made of a wear-resistant material. During operation, when the roll is suspended in the air, it is often difficult for employees to align the snap-fit ​​post with the hole in the bearing seat and insert it. However, by setting the guide ball, the snap-fit ​​post can roll on the surface of the bearing seat. Employees can operate tools to make the snap-fit ​​post roll against the surface of the bearing seat, thereby facilitating the repositioning and alignment of the snap-fit ​​post and improving work efficiency.

[0012] In one embodiment of the present invention, a plurality of lifting columns are slidably connected inside the snap-fit ​​column, and the plurality of lifting columns are arranged in a circumferential array. The end of each lifting column near the center of the snap-fit ​​column has a chamfer, and the end of each lifting column away from the snap-fit ​​column is fixedly connected to an adjusting plate. A pair of limiting elastic columns are fixedly connected between the adjusting plate and the snap-fit ​​column. A lifting assembly is provided inside the snap-fit ​​column, which is used to push the lifting column out of the snap-fit ​​column. During operation, after the snap-fit ​​column is inserted into the hole of the bearing seat, the snap-fit ​​column cannot be completely fitted with the hole of the bearing seat, so wobbling will occur, which is not conducive to the stability of the roll. At this time, the lifting assembly is activated. After the lifting assembly runs, it will push the adjusting plate of the lifting column out of the snap-fit ​​column, thereby pushing the stretching limiting elastic column to expand outward until the limiting elastic column fits with the inner wall of the bearing seat hole. This can eliminate the wobbling caused by size mismatch, improve stability, reduce the wear of the snap-fit ​​assembly, and improve the service life of the equipment.

[0013] In one embodiment of the present invention, the lifting assembly includes a sliding block slidably connected inside the locking post. The sliding block has a chamfer at one end near the lifting post that matches the locking post. A return spring is fixedly connected between the sliding block and the clamping plate. Air guide holes are provided inside the locking post and the limiting ring. A connecting cap is installed outside the limiting ring at the air guide hole. The connecting cap is connected to an air pumping assembly via an air guide pipe. The air pumping assembly is used to inject gas into the sealed space between the sliding block, the locking post, and the clamping plate. During operation, when the lifting assembly needs to be activated, the air pumping assembly is first activated to fill the locking post with gas. The gas enters the sealed space formed by the sliding block, the locking post, and the clamping plate from the connecting cap, thereby pushing the sliding block to stretch the return spring and move. The sliding block gradually contacts the lifting post and gradually pushes the lifting post out, thus achieving an expansion effect.

[0014] In one embodiment of the present invention, the air-inflating assembly includes a reciprocating push rod, a piston fixedly connected to the top of the reciprocating push rod, the reciprocating push rod slidably connected to a limiting rod and a handle, the piston slidably connected to the inside of the limiting rod, a cavity adapted to the piston being formed inside the limiting rod, and multiple sets of connecting pipes being connected through the limiting rod at corresponding positions in the cavity, one pair of connecting pipes having mounting caps installed on their exteriors, the air guide pipe being connected to the mounting caps, and one-way valves being installed inside the multiple connecting pipes according to their functions, and a handle having a corresponding position relative to the reciprocating push rod. The mounting slot has a limit magnet fixed inside the handle at the corresponding position. During operation, when the snap-fit ​​assembly is fully inserted into the hole of the bearing seat, the employee can hold the reciprocating push rod and pull it back and forth. During the pulling process, external gas will be drawn into the cavity inside the limit rod through the connecting pipe. Then, with the cooperation of the one-way valve, this gas will be squeezed into the air guide pipe of the mounting cap by the piston and finally enter the interior of the snap-fit ​​assembly. Through the design of the air pumping assembly, the employee can quickly make the snap-fit ​​assembly fit into the hole of the bearing seat after it is inserted into the hole, thus improving the stability of the roll.

[0015] In one embodiment of the present invention, a guide hole is provided inside the clamping plate and at a position corresponding to the reset spring. A hollow elastic plate is fixedly connected to one side of each pair of clamping plates that are close to each other. The cavity inside the hollow elastic plate communicates with the guide hole. A friction strip is fixedly connected to one side of each pair of hollow elastic plates that are close to each other. During operation, when the pair of clamping plates clamp the bearing seat, the employee can also activate the air pumping component to inject gas into the clamping column. Some of the gas will enter the hollow elastic plate through the guide hole, causing the hollow elastic plate to expand, increasing the compressive force on the bearing seat, and further improving stability.

[0016] The technical solution of the present invention has the following advantages compared with the prior art:

[0017] The present invention discloses a roll preparation tool that extends the working range of the clamping plate and locking assembly through the cooperation of a limiting rod, a handle, and an adjusting rod, thereby achieving the following beneficial effects: Firstly, employees do not need to directly contact the roll, improving employee safety and extending the employee's working range, making it suitable for rolls with narrow installation positions; secondly, using the tool achieves a lever-like effect, with the contact point with the roll bearing seat as the fulcrum, thus requiring less effort and providing better stability compared to directly holding a lever by hand.

[0018] The roll preparation tool of the present invention, through the cooperative design of the limiting plate and the mating plate, can prevent the bearing seat from directly contacting the adjusting component when the bearing seat is snapped in place, thereby protecting the adjusting component and improving the service life of the equipment. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the clamping plate structure in this invention;

[0023] Figure 4 This is a cross-sectional view of the adjustment component structure in this invention;

[0024] Figure 5 This is a schematic diagram of the air pump component structure in this invention;

[0025] Figure 6 This is a schematic diagram of the snap-fit ​​component structure in this invention;

[0026] Figure 7 This is a cross-sectional view of the snap-fit ​​component structure in this invention;

[0027] Explanation of reference numerals in the accompanying drawings: 1. Limiting rod; 2. Handle; 3. Adjusting rod; 4. Mounting plate; 5. Clamping plate; 6. Adjusting assembly; 601. Threaded rod; 602. Limiting disc; 603. Rotating disc; 604. Fastening ring; 7. Snap-fit ​​assembly; 701. Snap-fit ​​post; 702. Limiting ring; 703. Sliding block; 704. Return spring; 705. Lifting post; 706. Adjusting plate; 707. Limiting elastic post; 708. Guide ball; 709. Connecting cap; 8. Air inflator assembly; 801. Reciprocating push rod; 802. Piston; 803. Connecting pipe; 804. Mounting cap; 805. Limiting magnet; 9. Guide hole; 10. Limiting plate; 11. Mating plate; 12. Hollow elastic plate. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0029] like Figure 1As shown in the embodiment of the present invention, a roll preparation tool includes a limiting rod 1, a handle 2 installed at the bottom of the limiting rod 1, an adjusting rod 3 threadedly connected inside the limiting rod 1, a mounting plate 4 fixedly connected to the top of the adjusting rod 3, a pair of clamping plates 5 slidably connected inside the mounting plate 4, and an adjusting component 6 installed inside the clamping plates 5. The adjusting component 6 is used to adjust the distance between the pair of clamping plates 5. A snap-fit ​​component 7 is fixedly connected to the opposite side of each pair of clamping plates 5, and the snap-fit ​​component 7 is used to snap into the hole of the bearing seat of the roll to be replaced. During operation, the employee first needs to rotate the adjusting rod 3 to adjust the overall length of the tool according to their needs. Once the appropriate length is reached, rotation is stopped. Then, the employee holds the handle 2 and lifts the entire tool. Depending on the roll installation progress, two limiting methods can be selected: one is to adjust the distance between the pair of clamping plates 5 beforehand using the adjusting component 6, so that it is aligned with the bearing seat of the roll to be replaced. The width is matched, and then the bearing seat is snapped between a pair of clamping plates 5 to limit the roll movement. This method can effectively limit the roll movement. The second method is to use the snap-fit ​​component 7. By inserting the snap-fit ​​component 7 into the hole of the bearing seat of the roll to be replaced, the bearing seat is hooked, thereby limiting the roll movement. This method is suitable when the employee has limited space and cannot use the limiting rod 1 for limiting. In this embodiment of the invention, the working range of the clamping plate 5 and the snap-fit ​​component 7 is extended by the cooperation of the limiting rod 1, the handle 2, and the adjusting rod 3, thereby achieving the following beneficial effects: First, the employee does not need to directly contact the roll, improving the employee's safety and extending the employee's working range, which is suitable for some rolls with narrow installation positions. Second, the use of the tool can achieve a lever-like principle. It uses the contact point with the roll bearing seat as the fulcrum to achieve a lever-like effect, which is more labor-saving than directly holding the lever by hand, and the natural stability effect is also better.

[0030] like Figures 1 to 4 As shown, the adjustment assembly 6 includes a pair of interlocking threaded rods 601 with opposite thread directions. The threaded rods 601 are threadedly connected to a pair of clamping plates 5. A limiting disc 602 and a rotating disc 603 are fixedly connected to the ends of the threaded rods 601 that are far apart from each other. During operation, when the distance between the clamping plates 5 needs to be adjusted, the operator can rotate the rotating disc 603. The rotation of the rotating disc 603 causes the interlocking threaded rods 601 to rotate together. Since the threaded rods 601 are threadedly connected to the clamping plates 5 and the thread directions of the threaded rods 601 are opposite, the clamping plates 5 will move closer or further apart, thus achieving the effect of autonomously adjusting the distance between the clamping plates 5, making the tool more adaptable. The limiting disc 602 serves as a limiting device.

[0031] like Figures 1 to 4 As shown, a fastening ring 604 is installed on the outside of the pair of threaded rods 601 at the interlocking position. During operation, by installing the fastening ring 604 on the outside of the pair of threaded rods 601, the interlocking position of the pair of threaded rods 601 can be protected, preventing the interlocking position of the threaded rods 601 from being corroded and damaged during daily use, and facilitating later disassembly and maintenance.

[0032] like Figures 1 to 3 As shown, a limiting plate 10 and a mating plate 11 are respectively fixed to one side of the pair of clamping plates 5 that are close to each other. The limiting plate 10 and the mating plate 11 are slidably connected to each other and cooperate with each other. During operation, as the pair of clamping plates 5 move closer and further apart, the limiting plate 10 and the mating plate 11 also slide relative to each other. Through the cooperation design of the limiting plate 10 and the mating plate 11, when the bearing seat is snapped in place, the bearing seat can be prevented from directly contacting the adjusting component 6, thereby protecting the adjusting component 6 and improving the service life of the equipment.

[0033] like Figure 3 , Figure 6 , Figure 7 As shown, the snap-fit ​​assembly 7 includes a snap-fit ​​post 701. One end of the snap-fit ​​post 701 near the clamping plate 5 is connected to a limit ring 702 via a thread. The limit ring 702 is fixedly connected to the clamping plate 5. During operation, by snapping the snap-fit ​​post 701 into the hole of the bearing seat, the roll can be limited. Due to the threaded connection between the snap-fit ​​post 701 and the limit ring 702, the snap-fit ​​post 701 can be removed and replaced after wear.

[0034] like Figure 6 As shown, the end of the locking post 701 away from the limiting ring 702 is ball-connected with a guide ball 708, which is made of wear-resistant material. During operation, when the roll is suspended in the air, it is often difficult for employees to align the locking post 701 with the hole in the bearing seat and insert it. However, by setting the guide ball 708, the locking post 701 can roll on the surface of the bearing seat. Employees can operate tools to make the locking post 701 roll against the surface of the bearing seat, thereby facilitating the repositioning and alignment of the locking post 701 and improving work efficiency.

[0035] like Figures 6 to 7As shown, multiple lifting columns 705 are slidably connected inside the snap-fit ​​column 701. These lifting columns 705 are arranged in a circumferential array. One end of each lifting column 705 near the center of the snap-fit ​​column 701 has a chamfer, and an adjusting plate 706 is fixedly connected to the end of each lifting column 705 away from the snap-fit ​​column 701. A pair of limiting elastic columns 707 are fixedly connected between the adjusting plate 706 and the snap-fit ​​column 701. A lifting assembly is provided inside the snap-fit ​​column 701 to push the lifting columns 705 out of the snap-fit ​​column 701. During operation, after the snap-fit ​​column 701 is inserted into the hole of the bearing seat, it cannot completely fit into the hole, causing wobbling, which is detrimental to the stability of the roll. At this time, the lifting assembly is activated, and the lifting assembly will push the lifting columns... The adjusting plate 705 is pushed out from inside the snap-fit ​​post 701, thereby pushing the stretching and limiting elastic post 707 of the adjusting plate 706 to expand outward until the limiting elastic post 707 fits against the inner wall of the bearing seat hole. This eliminates the shaking caused by size mismatch, improves stability, and reduces the wear of the snap-fit ​​assembly 7, thus extending the service life of the equipment. It should be noted that when setting the adjusting plate 706, the side near the guide ball 708 should be chamfered to facilitate the adjusting plate 706 sliding into the hole of the bearing seat. Furthermore, for some large bearing seats where conditions permit, a slot adapted to the adjusting plate 706 can be opened on the snap-fit ​​post 701 to completely accommodate the adjusting plate 706, thereby avoiding excessive impact on the adjusting plate 706 during the process of the snap-fit ​​post 701 sliding into the hole.

[0036] like Figures 6 to 7 As shown, the lifting assembly includes a sliding block 703, which is slidably connected inside the locking post 701. One end of the sliding block 703 near the lifting post 705 has a chamfer adapted to the locking post 701. A return spring 704 is fixedly connected between the sliding block 703 and the clamping plate 5. Air guide holes are provided inside both the locking post 701 and the limiting ring 702. A connecting cap 709 is installed outside the limiting ring 702 at the air guide hole. The connecting cap 709 is connected to an air pumping assembly 8 via an air guide pipe. The air pumping assembly 8 is used to seal the space between the sliding block 703, the locking post 701, and the clamping plate 5. Gas is introduced into the space. When the lifting assembly needs to be activated during operation, the air pumping assembly 8 needs to be activated first to fill the inside of the locking post 701 with gas. The gas is introduced from the connecting cap 709 into the sealed space formed by the sliding block 703, the locking post 701, and the clamping plate 5, thereby pushing the sliding block 703 to stretch the return spring 704 and move. The sliding block 703 will gradually contact the lifting post 705 and gradually push the lifting post 705 out, thereby achieving the expansion effect. It should be noted that when installing the locking post 701 and the limiting ring 702, it is necessary to ensure that the air guide holes inside the locking post 701 and the limiting ring 702 are matched.

[0037] like Figure 1 , Figure 2 , Figure 5 As shown, the air pump assembly 8 includes a reciprocating push rod 801, with a piston 802 fixedly connected to its top. The reciprocating push rod 801 is slidably connected to the inside of the limiting rod 1 and the handle 2. The piston 802 is slidably connected to the inside of the limiting rod 1. The limiting rod 1 has a cavity adapted to the piston 802. Multiple sets of connecting pipes 803 are connected through the limiting rod 1 at corresponding positions within the cavity. A pair of connecting pipes 803 are fitted with mounting caps 804, and the air guide pipe is connected to the mounting caps 804. Each of the multiple connecting pipes 803 has a one-way valve installed inside according to its function. The handle 2 has a mounting groove at a position opposite to the reciprocating push rod 801. A limiting magnet 805 is fixedly attached. During operation, when the snap-fit ​​assembly 7 is fully inserted into the hole of the bearing housing, the employee can hold the reciprocating push rod 801 and pull it back and forth. During the pulling process, external gas will be drawn into the cavity inside the limiting rod 1 through the connecting pipe 803. Then, with the cooperation of the one-way valve, this gas will be squeezed into the air guide pipe of the mounting cap 804 by the piston 802, and finally enter the interior of the snap-fit ​​assembly 7. Through the design of the air pumping assembly 8, the employee can quickly make the snap-fit ​​assembly 7 fit the hole of the bearing housing after it is inserted into the hole, thus improving the stability of the roll. It should be noted that when it is necessary to loosen the bearing housing, simply pull out the air guide pipe connected to the mounting cap 804, and the gas inside the snap-fit ​​assembly 7 will be released.

[0038] like Figures 3 to 4 As shown, a guide hole 9 is provided inside the clamping plate 5 and at the position corresponding to the return spring 704. A hollow elastic plate 12 is fixedly connected to one side of each pair of clamping plates 5 that is close to each other. The cavity inside the hollow elastic plate 12 is connected to the guide hole 9. A friction strip is fixedly connected to one side of each pair of hollow elastic plates 12 that is close to each other. During operation, when the pair of clamping plates 5 clamp the bearing seat, the employee can also start the air pumping component 8 to inject gas into the locking post 701. Some of the gas will enter the hollow elastic plate 12 through the guide hole 9, causing the hollow elastic plate 12 to expand, increasing the squeezing force on the bearing seat, and further improving stability.

[0039] Working Principle: In this embodiment of the invention, the employee first needs to adjust the overall length of the invention by rotating the adjusting rod 3 according to their needs. Once the appropriate length is reached, rotation is stopped. Then, the employee holds the handle 2 and lifts the entire tool. Depending on the installation progress of the roll, two limiting methods can be selected: First, the distance between the pair of clamping plates 5 is adjusted beforehand using the adjusting component 6 to match the width of the bearing seat of the roll to be replaced. Then, the bearing seat is snapped between the pair of clamping plates 5 to limit the roll's movement. This method effectively limits the roll's swaying. Second, the snap-fit ​​component 7 is used. This is done by inserting the snap-fit ​​component 7 into the hole of the bearing seat of the roll to be replaced. This method hooks onto the bearing housing to limit the movement of the roll. It is suitable when the employee's own space is limited and the limiting rod 1 cannot be used for limiting. In this embodiment of the invention, the working range of the clamping plate 5 and the snap-fit ​​assembly 7 is extended through the cooperation of the limiting rod 1, the handle 2, and the adjusting rod 3, thereby achieving the following beneficial effects: First, the employee does not need to directly contact the roll, improving the employee's safety and extending the employee's working range, which is suitable for some rolls with narrow installation positions; Second, the use of the tool can achieve a lever-like principle, with the contact point with the roll bearing housing as the fulcrum, achieving a lever-like effect, which is more labor-saving than directly holding the lever by hand, and naturally has a better stability effect.

[0040] When it is necessary to adjust the distance between a pair of clamping plates 5, the employee can rotate the rotating disk 603. After the rotating disk 603 rotates, it drives a pair of threaded rods 601 that are interlocked to rotate together. Since the threaded rods 601 are connected to the clamping plates 5 by threads and the threads of the pair of threaded rods 601 are in opposite directions, the clamping plates 5 will move closer or further away from each other, thereby achieving the effect of independently adjusting the distance between a pair of clamping plates 5, making the tool more adaptable. The setting of the limiting disk 602 plays a limiting role.

[0041] By installing fastening rings 604 on the outside of a pair of threaded rods 601, the interlocking joint of the pair of threaded rods 601 can be protected, preventing the interlocking joint of the threaded rods 601 from being corroded and damaged during daily use, and facilitating disassembly and maintenance in the future.

[0042] During the process of the pair of clamping plates 5 moving closer and further apart, the limiting plate 10 and the mating plate 11 also slide relative to each other. Through the mating design of the limiting plate 10 and the mating plate 11, when the bearing seat is snapped in place, the bearing seat can be prevented from directly contacting the adjusting component 6, thereby protecting the adjusting component 6 and improving the service life of the equipment.

[0043] In use, by snapping the snap-fit ​​post 701 into the hole of the bearing housing, the roll can be limited; the snap-fit ​​post 701 can be removed and replaced after it wears out due to the threaded connection between the snap-fit ​​post 701 and the limiting ring 702.

[0044] When the roll is suspended in the air, it is often difficult for employees to align the snap-fit ​​pin 701 with the hole in the bearing housing and insert it. However, with the setting of the guide ball 708, the snap-fit ​​pin 701 can roll on the surface of the bearing housing. Employees can operate tools to make the snap-fit ​​pin 701 roll against the surface of the bearing housing, which facilitates the repositioning and alignment of the snap-fit ​​pin 701 and improves work efficiency.

[0045] After the snap-fit ​​pin 701 is inserted into the hole of the bearing housing, it cannot fully fit into the hole, causing wobbling and compromising the stability of the roll. At this point, the lifting assembly is activated. The lifting assembly pushes the lifting pin adjusting plate 705 out of the snap-fit ​​pin 701, thereby pushing the stretching and limiting elastic pin 707 outwards until it fits against the inner wall of the bearing housing hole. This eliminates the wobbling caused by dimensional mismatch, improving stability. To reduce the wear of the snap-fit ​​assembly 7 and improve the service life of the equipment; it should be noted that when setting the adjusting plate 706, the side of it near the guide ball 708 should be chamfered to facilitate the adjusting plate 706 sliding into the hole of the bearing seat. Furthermore, for some large bearing seats where conditions permit, a slot that matches the adjusting plate 706 can be opened on the snap-fit ​​post 701 to completely accommodate the adjusting plate 706, thereby avoiding the adjusting plate 706 causing too much impact during the process of the snap-fit ​​post 701 sliding into the hole;

[0046] When the lifting assembly needs to be activated, the air pumping assembly 8 must first be activated to fill the inside of the locking post 701 with gas. The gas enters the sealed space formed by the sliding block 703, the locking post 701, and the clamping plate 5 through the connecting cap 709, thereby pushing the sliding block 703 to stretch the return spring 704 and move. The sliding block 703 will gradually come into contact with the lifting post 705 and gradually push the lifting post 705 out, thus achieving the expansion effect. It should be noted that when installing the locking post 701 and the limiting ring 702, it is necessary to ensure that the air guide holes inside the locking post 701 and the limiting ring 702 are matched.

[0047] When the snap-fit ​​assembly 7 is fully inserted into the hole of the bearing housing, the employee can hold the reciprocating push rod 801 and pull it back and forth. During the pulling process, external gas will be drawn into the cavity inside the limit rod 1 through the connecting pipe 803. Then, with the cooperation of the one-way valve, this gas will be squeezed into the air guide pipe of the mounting cap 804 by the piston 802, and finally enter the interior of the snap-fit ​​assembly 7. Through the design of the air pump assembly 8, the employee can quickly make the snap-fit ​​assembly 7 fit the hole of the bearing housing after it is inserted into the hole, thus improving the stability of the roll. It should be noted that when it is necessary to loosen the bearing housing, simply pull out the air guide pipe connected to the mounting cap 804, and the gas inside the snap-fit ​​assembly 7 will be released.

[0048] When a pair of clamping plates 5 hold the bearing housing in place, employees can also activate the air pumping component 8 to inject gas into the clamping post 701. Some of the gas will enter the hollow elastic plate 12 through the guide hole 9, causing the hollow elastic plate 12 to expand, increasing the compressive force on the bearing housing and further improving stability.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A roll preparation tool, characterized in that: Includes a limiting rod (1), with a handle (2) installed at the bottom end of the limiting rod (1), and an adjusting rod (3) connected inside the limiting rod (1) by a thread. A mounting plate (4) is fixedly connected to the top end of the adjusting rod (3), and a pair of clamping plates (5) are slidably connected inside the mounting plate (4). An adjusting component (6) is installed inside the clamping plate (5), and the adjusting component (6) is used to adjust the distance between the pair of clamping plates (5). A snap-fit ​​component (7) is fixedly connected to the side of the pair of clamping plates (5) that is far away from each other, and the snap-fit ​​component (7) is used to snap into the hole of the bearing seat of the roller to be replaced. The adjustment assembly (6) includes a pair of threaded rods (601) that are interlocked with each other. The threads on the pair of threaded rods (601) are in opposite directions. The pair of threaded rods (601) are threadedly connected to a pair of clamping plates (5). The ends of the pair of threaded rods (601) that are far apart from each other are respectively fixed to a limiting plate (602) and a rotating plate (603). The snap-fit ​​assembly (7) includes a snap-fit ​​post (701), and a limit ring (702) is threadedly connected to one end of the snap-fit ​​post (701) near the clamping plate (5). The limit ring (702) is fixedly connected to the clamping plate (5). The locking post (701) has multiple lifting posts (705) slidably connected inside. The multiple lifting posts (705) are arranged in a circumferential array. The lifting post (705) has a chamfer at one end near the center of the locking post (701). An adjusting plate (706) is fixedly connected to the end of the lifting post (705) away from the locking post (701). A pair of limiting elastic posts (707) are fixedly connected between the adjusting plate (706) and the locking post (701). The locking post (701) has a lifting assembly inside. The lifting assembly is used to push the lifting post (705) out of the locking post (701). The lifting assembly includes a sliding block (703), which is slidably connected inside the snap-fit ​​post (701). The end of the sliding block (703) near the lifting post (705) has a chamfer that matches the lifting post (705). A return spring (704) is fixed between the sliding block (703) and the clamping plate (5). Air guide holes are provided inside the snap-fit ​​post (701) and the limiting ring (702). A connecting cap (709) is installed outside the limiting ring (702) and at the air guide hole. The connecting cap (709) is connected to an air pumping assembly (8) through an air guide pipe. The air pumping assembly (8) is used to send gas into the sealed space between the sliding block (703), the snap-fit ​​post (701), and the clamping plate (5). The air pump assembly (8) includes a reciprocating push rod (801), a piston (802) is fixedly connected to the top of the reciprocating push rod (801), the reciprocating push rod (801) is slidably connected to the inside of the limiting rod (1) and the handle (2), the piston (802) is slidably connected to the inside of the limiting rod (1), the limiting rod (1) has a cavity adapted to the piston (802) inside, multiple sets of connecting pipes (803) are connected through the inside of the limiting rod (1) and at the corresponding position of the cavity, a pair of connecting pipes (803) are fitted with mounting caps (804) on the outside, the air guide pipe is connected to the mounting caps (804), and multiple connecting pipes (803) are fitted with one-way valves according to their functions. The handle (2) has a mounting groove inside and at the position opposite to the reciprocating push rod (801), and a limiting magnet (805) is fixedly connected inside the handle (2) and at the corresponding position of the mounting groove. A fastening ring (604) is installed on the outside of the pair of threaded rods (601) and at the interlocking position. A limiting plate (10) and a mating plate (11) are respectively fixed to one side of the pair of clamping plates (5) that are close to each other. The limiting plate (10) and the mating plate (11) are slidably connected to each other and cooperate with each other. The end of the snap-fit ​​post (701) away from the limiting ring (702) is ball-connected with a guide ball (708), which is made of wear-resistant material; The clamping plate (5) has a guide hole (9) inside and at the position corresponding to the reset spring (704). A hollow elastic plate (12) is fixedly connected to the side of the pair of clamping plates (5) that are close to each other. The cavity inside the hollow elastic plate (12) is connected to the guide hole (9). A friction strip is fixedly connected to the side of the pair of hollow elastic plates (12) that are close to each other.

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