Roller changing device in the cleaning section of the hot-dip galvanizing unit

Abstract

This application discloses a roller changing device for the cleaning section of a hot-dip galvanizing unit, belonging to the field of hot-dip galvanizing processes. It includes a support frame for mounting submerged rollers, a first groove on the support frame for sliding engagement with a sliding seat, a first groove on the sliding seat adapted to the submerged roller, a mounting base fixedly connected to the support frame, and the sliding seat abutting against the mounting base. A support seat for auxiliary support of the submerged roller is provided on the support frame, and the support seat is slidably connected to the support frame. A storage groove for placing the submerged roller under maintenance is provided on the support frame, and the storage groove communicates with the first groove. A storage groove for placing a replacement submerged roller is provided at the top of the support frame, and a second groove for restricting the movement of the replacement submerged roller is provided on the support frame. Both the storage groove and the first groove communicate with the second groove. This application improves the efficiency of maintenance work.

Description

Technical Field

[0001] This application relates to the field of hot-dip galvanizing processes, and in particular to a roller changing device for the cleaning section of a hot-dip galvanizing unit. Background Technology

[0002] Hot-dip galvanizing units are crucial production equipment for cold-rolled enterprises, responsible for producing high-value-added cold-rolled products. Several tanks with different functions are installed beneath the cement platform in the cleaning section at the inlet of the hot-dip galvanizing unit. Submerged rollers are installed at the bottom of each tank for turning the strip steel, thereby rinsing or electrolytically washing away emulsions, dust, and other impurities from the strip surface. After a certain period of use, these submerged rollers need to be replaced, and the bearing ends and roller surfaces need to be inspected offline and re-ground. Because all the turning rollers are installed in the tanks below the cement platform in the cleaning section, the platform obstructs the movement, making it impossible to use any lifting equipment for roller changing. Currently, the common method for changing rollers is to use a work platform with brackets. Operators stand on the work platform and manually disassemble and pull out the submerged rollers, placing them on the brackets for inspection and then manually reinstalling them after maintenance. The entire process requires a large number of operators, is labor-intensive, time-consuming and labor-intensive. Due to the high requirements for the continuity of hot-dip galvanizing unit production, each roll change will greatly increase the downtime, seriously affecting production efficiency. In addition, during the long roll change process, the work platform will be covered with oil stains, and when operators stand on the platform, their feet are very likely to slip and fall, causing safety accidents.

[0003] In related technologies, Chinese invention patent with announcement number CN101665896A discloses a roller changing device for the cleaning section of a hot-dip galvanizing unit. The roller changing device includes a base with a walking function; a lifting frame with a lifting function; a sliding clamping component for changing rollers, which is located at one end of the upper surface of the lifting frame and is slidably connected to the lifting frame; and a bracket for supporting rollers.

[0004] Regarding the aforementioned related technologies, the inventors believe that the application involves lifting the roller with a bracket and moving the roller using a lifting frame to remove the submerged roller, and then resetting the repaired submerged roller in the same way, which results in low work efficiency. Summary of the Invention

[0005] To improve the efficiency of changing submerged rollers in the cleaning section of a hot-dip galvanizing unit, this application provides a roller changing device for the cleaning section of a hot-dip galvanizing unit.

[0006] The hot-dip galvanizing unit cleaning section roller changing device provided in this application adopts the following technical solution: A roller changing device for the cleaning section of a hot-dip galvanizing unit includes a support frame for mounting a submerged roller. A sliding seat is slidably mounted on the support frame. The support frame has a first groove for sliding cooperation with the sliding seat. The sliding seat has a first groove adapted to the submerged roller. A mounting base is fixedly connected to the support frame, and the sliding seat can abut against the mounting base. A support seat for auxiliary support of the submerged roller is provided on the support frame, and the support seat is slidably connected to the support frame. A storage groove for placing the submerged roller for maintenance is provided on the support frame, and the storage groove is connected to the first groove. The support frame is connected to the first slide groove, which is connected to the second slide groove. The support frame is provided with a storage groove at the top for placing a replacement submerged roller. The support frame is provided with a second slide groove for restricting the movement of the replacement submerged roller. The storage groove and the first slide groove are both connected to the second slide groove. The support frame is provided with a first drive assembly for controlling the movement of the sliding seat. The support frame is provided with a second drive assembly for controlling the movement of the support seat towards the storage groove. The support seat is provided with a first limiting assembly for controlling the movement of the submerged roller. The support frame is provided with a third drive assembly for controlling the movement of the replacement submerged roller.

[0007] By adopting the above technical solution, when the submerged roller needs maintenance, the first drive assembly drives the sliding seat to move. The submerged roller on the sliding seat moves with the sliding seat under the action of gravity. When the submerged roller moves to the same horizontal direction as the storage tank, the sliding seat continues to move. At this time, the submerged roller contacts the support seat and stops moving. Then, the second drive assembly drives the support seat to move towards the storage tank, and the submerged roller moves simultaneously. After reaching the position of the storage tank opening, the first limiting assembly stops limiting the submerged roller, and the submerged roller detaches from the support seat and enters the storage tank for operators to remove for maintenance. At the same time, the third drive assembly drives the storage tank... The replacement submerged roller moves while the first drive assembly drives the sliding seat to move towards the connection between the second and first chutes. The replacement submerged roller enters the first chute through the second chute and falls onto the sliding seat. Then, the first drive assembly drives the sliding seat to abut against the mounting base to prevent the replacement submerged roller from shaking. Once the replacement is complete, the machine can continue operating, greatly reducing downtime and improving work efficiency. By setting up retention and storage slots, submerged rollers that need maintenance due to reduced function of the first and third drive assemblies can be removed and replaced with new ones, greatly reducing downtime and improving work efficiency.

[0008] Preferably, the first drive component includes a first cylinder, which is disposed in the first slide groove, and the output end of the first cylinder is fixedly connected to the sliding seat.

[0009] By adopting the above technical solution, when the first cylinder is started, it pulls the sliding seat to move, so as to cooperate with other components to complete the removal and reinstallation of the submerged roller.

[0010] Preferably, the second drive assembly includes a first rack, which is fixedly connected to the support base. A second rack is slidably disposed on the support frame, which passes through the first groove and can abut against the sliding base. A transmission gear is rotatably mounted on the support frame, and both the first rack and the second rack mesh with the transmission gear. A first return spring is fixedly connected to the support frame, and the end of the first return spring away from the support base is fixedly connected to the support frame.

[0011] By adopting the above technical solution, the first cylinder drives the sliding seat to move. After the submerged roller moves to the support seat position with the sliding seat, the sliding seat continues to move, and the submerged roller stops on the support seat. After the sliding seat continues to move, it contacts the second rack. The sliding seat pushes the second rack to move. The movement of the second rack causes the transmission gear to rotate. The rotation of the transmission gear causes the first rack to move. The movement of the first rack causes the support seat to move and move towards the storage tank position. After the submerged roller under maintenance enters the storage tank, the sliding seat moves to its initial position under the drive of the first cylinder. After the sliding seat stops contacting the second rack, the support seat returns to its initial position under the action of the first return spring. The first rack and the second rack reset simultaneously.

[0012] Preferably, the first limiting component includes a support plate, which is hinged to the support seat. Both the support plate and the support seat are capable of abutting against the submerged roller. The side wall of the support seat near the support plate is provided with an inclined surface. A second groove is formed between the support seat and the support plate. The support seat is provided with a first control component for controlling the movement of the support plate.

[0013] By adopting the above technical solution, the second groove is used to restrict the movement of the submerged roller that is resting on the support seat. After the support seat and the submerged roller on it move toward the storage trough, the first control component controls the support plate to move. The support plate tilts so that the second groove can no longer restrict the submerged roller, forming an inclined surface that tilts toward the storage trough. The submerged roller moves along the inclined surface into the storage trough.

[0014] Preferably, the first control component includes a push block slidably disposed within the support base. The support base has a third sliding groove for sliding cooperation with the push block. The push block abuts against the support plate. The sidewalls of the push block and the support plate that are close to each other are provided with inclined surfaces. A second return spring is fixedly connected to the push block. The end of the second return spring away from the push block is fixedly connected to the inner sidewall of the third sliding groove. A push rod for pushing the push block is slidably disposed on the support base. The push rod passes through the support base, enters the third sliding groove, and is fixedly connected to the push block. A trigger plate is fixedly connected to the support frame, and the push rod can be fixedly connected to the trigger plate.

[0015] By adopting the above technical solution, after the support base and the submerged roller on it move towards the storage trough, the push rod first contacts the trigger plate. The support base continues to move, and at this time the trigger plate pushes the push rod to move. The push rod starts to move relative to the support base. The movement of the push rod causes the push block to move. The push block moves away from the support plate. The support plate loses the support of the push block and begins to move along the hinge point. After the support plate moves, the second groove forms an inclined surface that slopes towards the storage trough. Then the submerged roller begins to move towards the storage trough along this inclined surface.

[0016] Preferably, the support base is provided with a second limiting component for restricting the movement of the support plate. The second limiting component includes a limiting block, which is slidably disposed within the support base. A fourth sliding groove is formed on the inner sidewall of the third sliding groove for sliding cooperation with the limiting block. The limiting block can abut against the sidewall of the push block near the second return spring. A third return spring is fixedly connected to the limiting block. The end of the third return spring away from the limiting block is fixedly connected to the inner sidewall of the fourth sliding groove. A receiving groove is formed on the push block for the limiting block to pass through. A control rod is slidably disposed on the support base. The control rod passes into the fourth sliding groove and abuts against the limiting block. Both the sidewalls of the control rod and the limiting block near each other are provided with inclined surfaces. A fourth return spring is fixedly connected to the control rod. The end of the fourth return spring away from the control rod is fixedly connected to the support base. The control rod can abut against the trigger plate.

[0017] By adopting the above technical solution, the limiting block is used to restrict the movement of the push block, prevent the support plate from squeezing the push block and causing abnormal movement of the push block and push rod, and improve the safety of the device. When the support seat moves towards the storage groove, the control rod first contacts the trigger plate. The trigger plate blocks the control rod from moving with the support seat. At this time, the control rod moves relative to the support seat. The control rod moves away from the limiting block. Under the action of the third return spring, the limiting block moves and aligns with the receiving groove on the push block. At this time, the limiting block can no longer block the movement of the push block.

[0018] Preferably, the third drive assembly includes a second cylinder and a push plate. The second cylinder is disposed in the storage tank, and the output end of the second cylinder is fixedly connected to the push plate. An auxiliary plate is slidably disposed in the storage tank to prevent the replacement submerged roller from shaking. A fifth return spring is fixedly connected to the auxiliary plate, and the end of the fifth return spring away from the auxiliary plate is fixedly connected to the inner sidewall of the storage tank.

[0019] By adopting the above technical solution, after the submerged roller under maintenance is moved into the storage tank, the second cylinder is started. The second cylinder pushes the push plate to move, and the push plate pushes the replacement submerged roller in the storage tank to move towards the second chute. The auxiliary plate is used to restrict the movement of the replacement submerged roller in the storage tank. After the push plate pushes the replacement submerged roller to move, the auxiliary plate is pushed by the submerged roller to compress the fifth return spring, thereby restricting the submerged roller.

[0020] Preferably, the support frame is provided with a buffer plate to restrict the movement of the maintenance submerged roller. The buffer plate is slidably connected to the inner side wall of the storage tank. A sixth return spring is fixedly connected to the buffer plate. A blocking plate is fixedly connected to the end of the sixth return spring away from the buffer plate. The blocking plate is slidably connected to the support frame.

[0021] By adopting the above technical solution, the submerged roller that enters the storage tank comes into contact with the buffer plate. The contact between the submerged roller and the buffer plate pushes the buffer plate to move, reducing the moving speed of the submerged roller. The buffer plate and the barrier plate can be removed by sliding the barrier plate so that the operator can take out and repair the submerged roller.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up retention and storage tanks, the submerged rollers that need maintenance due to the decrease in the function of the first and third drive components can be removed and replaced with new submerged rollers for use, which greatly reduces downtime and improves work efficiency. 2. By setting an auxiliary plate, the auxiliary plate is used to restrict the movement of the replacement submerged roller in the storage tank. After the push plate pushes the replacement submerged roller to move, the auxiliary plate is pushed by the submerged roller to compress the fifth return spring, thereby restricting the submerged roller. 3. By setting up a buffer plate, the submerged roller entering the storage tank comes into contact with the buffer plate. The contact between the submerged roller and the buffer plate pushes the buffer plate to move, reducing the moving speed of the submerged roller. The sliding barrier plate can be removed to allow the operator to take out and repair the submerged roller. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the roller changing device in the cleaning section of the hot-dip galvanizing unit according to an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the structure of the second driving component in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the structure of the first limiting component in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the push block structure according to an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the structure of the first limiting component in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures: 1. Support frame; 11. Sliding seat; 111. First slide groove; 12. Mounting seat; 13. Support seat; 14. Retention groove; 15. Storage groove; 16. Second slide groove; 2. First drive assembly; 21. First cylinder; 22. First rack; 23. Second rack; 24. Transmission gear; 25. First return spring; 3. First limiting assembly; 31. Support plate; 32. Push block; 321. Third slide groove; 33. Second return spring; 34. Push rod; 35. Trigger plate; 4. Second limiting assembly; 41. Limiting block; 411. Fourth slide groove; 42. Third return spring; 43. Receiving groove; 44. Control rod; 45. Fourth return spring; 5. Third drive assembly; 51. Second cylinder; 52. Push plate; 53. Auxiliary plate; 54. Fifth return spring; 55. Buffer plate; 56. Sixth return spring; 57. Barrier plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a roller changing device for the cleaning section of a hot-dip galvanizing unit. (Refer to...) Figure 1 The roller changing device in the cleaning section of the hot-dip galvanizing unit includes a support frame 1.

[0031] Reference Figure 1 The support frame 1 is horizontally arranged, and two storage slots 15 are formed on its top along its length. The two storage slots 15 are symmetrically arranged along the axis of the support frame 1. A third drive assembly 5 is provided on the support frame 1. The third drive assembly 5 includes a second cylinder 51 and a push plate 52. The second cylinder 51 is horizontally arranged and is located inside the storage slot 15. The push plate 52 is fixedly connected to the output end of the second cylinder 51. The second cylinder 51 corresponds to one storage slot 15.

[0032] Reference Figure 1 An auxiliary plate 53 is provided on the support frame 1. The auxiliary plate 53 is slidably connected to the inner side wall of the storage tank 15, and the auxiliary plate 53 corresponds to the storage tank 15 one by one. A fifth return spring 54 is fixedly connected to the side wall of the auxiliary plate 53 away from the push plate 52. The end of the fifth return spring 54 away from the auxiliary plate 53 is fixedly connected to the inner end wall of the storage tank 15.

[0033] Reference Figure 1The second cylinder 51 is activated, and the second cylinder 51 pushes the push plate 52 to move. The push plate 52 pushes the replacement submerged roller in the storage tank 15 to move towards the second slide 16. The auxiliary plate 53 is used to restrict the movement of the replacement submerged roller in the storage tank 15. After the push plate 52 pushes the replacement submerged roller to move, the auxiliary plate 53 is pushed by the submerged roller to compress the fifth return spring 54, thereby restricting the submerged roller.

[0034] Reference Figure 1 as well as Figure 2 The support frame 1 has two first sliding grooves 111 along its height direction, symmetrically arranged along the axis of the support frame 1. A mounting base 12 is provided at the top of each first sliding groove 111, and the mounting base 12 is fixedly connected to the inner top surface of the first sliding groove 111. A sliding seat 11 is slidably mounted on the support frame 1, and the sliding seat 11 slides and engages with the inner sidewall of the first sliding groove 111. First grooves are provided on the sidewalls of the sliding seat 11 and the mounting base 12 that are close to each other, allowing the sliding seat 11 to abut against the mounting base 12.

[0035] Reference Figure 1 as well as Figure 2 The support frame 1 has a second sliding groove 16, which corresponds one-to-one with the first sliding groove 111. One end of the second sliding groove 16 is connected to the storage groove 15, and the other end is connected to the first sliding groove 111. A retention groove 14 is formed on the side wall of the support frame 1 away from the second sliding groove 16, and the retention groove 14 is connected to the first sliding groove 111. The end of the retention groove 14 near the first sliding groove 111 has a slope.

[0036] Reference Figure 1 as well as Figure 2 A buffer plate 55 is slidably mounted on the support frame 1, and the buffer plate 55 slides and engages with the inner side wall of the storage groove 14. A sixth return spring 56 is fixedly connected to the side wall of the buffer plate 55 away from the first slide groove 111, and a blocking plate 57 is fixedly connected to the end of the sixth return spring 56 away from the buffer plate 55. The blocking plate 57 is slidably connected to the support frame 1.

[0037] Reference Figure 1 as well as Figure 2 The submerged roller enters the storage tank 14 and comes into contact with the buffer plate 55. The contact between the submerged roller and the buffer plate 55 pushes the buffer plate 55 to move, reducing the moving speed of the submerged roller. The buffer plate 57 and the buffer plate 55 can be removed by sliding the barrier plate 57 so that the operator can take out and repair the submerged roller.

[0038] Reference Figure 1 as well as Figure 2The support frame 1 is provided with a first drive assembly 2, which includes a first cylinder 21. The first cylinder 21 is disposed in the first slide groove 111, the first cylinder 21 is vertically disposed, and the output end of the first cylinder 21 is fixedly connected to the sliding seat 11.

[0039] Reference Figure 1 as well as Figure 2 A support base 13 is slidably mounted on the support frame 1, and the support base 13 is slidably connected to the support frame 1. A second drive assembly is provided on the support frame 1, and the second drive assembly includes a first rack 22. The first rack 22 is fixedly connected to the bottom surface of the support base 13 and is horizontally arranged. A second rack 23 is slidably passed through the support frame 1, and the second rack 23 is slidably connected to the inner side wall of the first slide groove 111. The second rack 23 is vertically arranged and can abut against the slide seat 11. A transmission gear 24 is rotatably mounted on the support frame 1, and both the first rack 22 and the second rack 23 mesh with the transmission gear 24. A first return spring 25 is fixedly connected to the side wall of the support base 13 away from the storage groove 14, and the end of the first return spring 25 away from the support base 13 is fixedly connected to the support frame 1.

[0040] Reference Figure 1 as well as Figure 2 The first cylinder 21 drives the sliding seat 11 to move. When the submerged roller moves with the sliding seat 11 to the support seat 13, the sliding seat 11 continues to move. The submerged roller stops on the support seat 13. After the sliding seat 11 continues to move, it contacts the second rack 23. The sliding seat 11 pushes the second rack 23 to move. The movement of the second rack 23 causes the transmission gear 24 to rotate. The rotation of the transmission gear 24 causes the first rack 22 to move. The movement of the first rack 22 causes the support seat 13 to move and move towards the storage groove 14.

[0041] Reference Figure 1 as well as Figure 3 A first limiting component 3 is provided on the support base 13, and the first limiting component 3 includes a support plate 31. The support plate 31 is rotatably mounted on the support base 13. Both the support plate 31 and the support base 13 are provided with inclined surfaces, and a second groove is formed between the inclined surfaces of the support plate 31 and the support base 13. The second groove is used to limit the movement of the submerged roller that is stationary on the support base 13. After the support base 13 and the submerged roller on it move toward the storage tank 14, the support plate 31 tilts so that the second groove can no longer limit the submerged roller, forming an inclined surface that tilts toward the storage tank 14. The submerged roller moves along the inclined surface into the storage tank 14.

[0042] Reference Figure 3 as well as Figure 4A first control component, including a push block 32, is provided on the support base 13. The push block 32 is slidably disposed within the support base 13, and the support base 13 has a third sliding groove 321 along its length. The push block 32 slides and engages with the inner wall of the third sliding groove 321. A second return spring 33 is fixedly connected to the push block 32, and the end of the second return spring 33 away from the push block 32 is fixedly connected to the inner wall of the third sliding groove 321. The push block 32 abuts against the support plate 31, and the sidewalls of the push block 32 and the support plate 31 that are close to each other are provided with inclined surfaces.

[0043] Reference Figure 1 as well as Figure 4 A push rod 34 is slidably mounted on the support base 13, and a trigger plate 35 is fixedly connected to the side wall of the support frame 1 near the storage groove 14. One end of the push rod 34 abuts against the trigger plate 35, and the other end of the push rod 34 passes into the third slide groove 321. The end of the push rod 34 located in the third slide groove 321 is fixedly connected to the push block 32.

[0044] Reference Figure 3 as well as Figure 4 After the support base 13 and the submerged roller on it move toward the storage groove 14, the push rod 34 first contacts the trigger plate 35. The support base 13 continues to move. At this time, the trigger plate 35 pushes the push rod 34 to move. The push rod 34 begins to move relative to the support base 13. The movement of the push rod 34 causes the push block 32 to move. The push block 32 moves away from the support plate 31. The support plate 31 loses the support of the push block 32 and begins to move along the hinge point. After the support plate 31 moves, the second groove forms an inclined surface that slopes toward the storage groove 14. Then the submerged roller begins to move toward the storage groove 14 along this inclined surface.

[0045] Reference Figure 4 as well as Figure 5 A second limiting component 4 is provided on the support base 13, and the second limiting component 4 includes a limiting block 41. The limiting block 41 is slidably disposed within the support base 13. A fourth sliding groove 411 is formed on the bottom surface of the third sliding groove 321 along its width direction. The limiting block 41 slides and engages with the inner sidewall of the fourth sliding groove 411. The limiting block 41 abuts against the sidewall of the push block 32 near the second return spring 33. A third return spring 42 is fixedly connected to the limiting block 41, and the end of the third return spring 42 away from the limiting block 41 is fixedly connected to the inner sidewall of the fourth sliding groove 411.

[0046] Reference Figure 4 as well as Figure 5The push block 32 has a receiving groove 43 along its length, and the limiting block 41 can slide and engage with the inner wall of the receiving groove 43. A control rod 44 is horizontally inserted through the support base 13, and the control rod 44 passes into the fourth sliding groove 411. The end of the control rod 44 located in the fourth sliding groove 411 abuts against the limiting block 41. The side walls of the control rod 44 and the limiting block 41 that are close to each other are provided with inclined surfaces. The end of the control rod 44 away from the limiting block 41 can abut against the trigger plate 35. A fourth return spring 45 is fixedly connected to the end of the control rod 44 away from the trigger plate 35. The end of the fourth return spring 45 away from the control rod 44 is fixedly connected to the support base 13.

[0047] Reference Figure 4 as well as Figure 5 The limiting block 41 is used to restrict the movement of the push block 32, preventing the support plate 31 from squeezing the push block 32 and causing abnormal movement of the push block 32 and the push rod 34, thus improving the safety of the device. When the support seat 13 moves towards the storage groove 14, the control rod 44 first contacts the trigger plate 35. The trigger plate 35 blocks the control rod 44 from moving with the support seat 13. At this time, the control rod 44 moves relative to the support seat 13. The control rod 44 moves away from the limiting block 41. Under the action of the third return spring 42, the limiting block 41 moves and aligns with the receiving groove 43 on the push block 32. At this time, the limiting block 41 cannot block the movement of the push block 32.

[0048] The implementation principle of the roller changing device in the cleaning section of the hot-dip galvanizing unit in this application embodiment is as follows: When the submerged roller needs to be repaired, the first drive assembly 2 drives the sliding seat 11 to move. The submerged roller on the sliding seat 11 moves with the sliding seat 11 under the action of gravity. When the submerged roller moves to the same horizontal direction as the storage tank 14, the sliding seat 11 continues to move. At this time, the submerged roller contacts the support seat 13 and stops moving. Then, the second drive assembly drives the support seat 13 to move towards the storage tank 14. The submerged roller moves at the same time. After reaching the position of the opening of the storage tank 14, the first limiting assembly 3 stops limiting the submerged roller. The submerged roller detaches from the support seat 13 and enters the storage tank 14 for the operator to take out for repair. At the same time, the third drive assembly 5... The replacement submerged roller moves within the drive storage tank 15, while the first drive assembly 2 drives the sliding seat 11 to move towards the connection between the second slide 16 and the first slide 111. The replacement submerged roller enters the first slide 111 through the second slide 16 and falls onto the sliding seat 11. Then, the first drive assembly 2 drives the sliding seat 11 to abut against the mounting base 12 to prevent the replacement submerged roller from shaking. Once the submerged roller replacement is complete, the machine can continue to operate, greatly reducing downtime and improving work efficiency. By setting up the storage tank 14 and the storage tank 15, the submerged rollers that need maintenance can be removed and replaced with new ones under the action of the first drive assembly 2 and the third drive assembly 5, greatly reducing downtime and improving work efficiency.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roller changing device for the cleaning section of a hot-dip galvanizing unit, comprising a support frame (1) for mounting submerged rollers, characterized in that: A sliding seat (11) is slidably disposed on the support frame (1). The support frame (1) has two first sliding grooves (111) for sliding cooperation with the sliding seat (11). The two first sliding grooves (111) are symmetrically arranged along the axis of the support frame (1). A first groove adapted to the submerged roller is provided on the sliding seat (11). A mounting base (12) is fixedly connected to the support frame (1). The sliding seat (11) can abut against the mounting base (12). A support seat (13) for auxiliary support of the submerged roller is provided on the support frame (1). The support seat (13) is slidably connected to the support frame (1). A storage groove (14) for placing the submerged roller for maintenance is provided on the support frame (1). The storage groove (14) communicates with the first sliding groove (111). A storage groove (15) for placing a replacement submerged roller is provided at the top of the support frame (1). The support frame (1) is provided with a second chute (16) for restricting the movement of the replacement submerged roller. The storage tank (15) and the first chute (111) are both connected to the second chute (16). The support frame (1) is provided with a first drive assembly (2) for controlling the movement of the sliding seat (11). The support frame (1) is provided with a second drive assembly for controlling the movement of the support seat (13) toward the storage tank (14). The support seat (13) is provided with a first limiting assembly (3) for controlling the movement of the submerged roller. The support frame (1) is provided with a third drive assembly (5) for controlling the movement of the replacement submerged roller. The third drive assembly (5) includes a second cylinder (51) and a push plate (52). The second cylinder (51) is disposed in the storage tank (15). There are two storage tanks (15), which are symmetrically arranged along the axis of the support frame (1). The second cylinder (51) corresponds to the storage tank (15) one by one. The output end of the second cylinder (51) is fixedly connected to the push plate (52). An auxiliary plate (53) is slidably disposed in the storage tank (15) to prevent the replacement submerged roller from shaking. A fifth return spring (54) is fixedly connected to the auxiliary plate (53). The end of the fifth return spring (54) away from the auxiliary plate (53) is fixedly connected to the inner side wall of the storage tank (15).

2. The roller changing device for the cleaning section of the hot-dip galvanizing unit according to claim 1, characterized in that: The first drive assembly (2) includes a first cylinder (21), which is disposed in the first slide groove (111), and the output end of the first cylinder (21) is fixedly connected to the sliding seat (11).

3. The roller changing device for the cleaning section of the hot-dip galvanizing unit according to claim 1, characterized in that: The second drive assembly includes a first rack (22) which is fixedly connected to the support seat (13). A second rack (23) is slidably disposed on the support frame (1). The second rack (23) passes through the first slide groove (111) and can abut against the slide seat (11). A transmission gear (24) is rotatably mounted on the support frame (1). Both the first rack (22) and the second rack (23) mesh with the transmission gear (24). A first return spring (25) is fixedly connected to the support frame (1). The end of the first return spring (25) away from the support seat (13) is fixedly connected to the support frame (1).

4. The roller changing device for the cleaning section of the hot-dip galvanizing unit according to claim 1, characterized in that: The first limiting component (3) includes a support plate (31), which is hinged to the support seat (13). Both the support plate (31) and the support seat (13) can abut against the submerged roller. The support seat (13) has an inclined surface on the side wall near the support plate (31). A second groove is formed between the support seat (13) and the support plate (31). The support seat (13) is provided with a first control component for controlling the movement of the support plate (31).

5. The roller changing device for the cleaning section of the hot-dip galvanizing unit according to claim 4, characterized in that: The first control component includes a push block (32), which is slidably disposed within the support base (13). The support base (13) has a third sliding groove (321) for sliding cooperation with the push block (32). The push block (32) abuts against the support plate (31). The sidewalls of the push block (32) and the support plate (31) that are close to each other are provided with inclined surfaces. A second return spring (33) is fixedly connected to the push block (32). The second return spring (33) is located far from... The end of the push block (32) is fixedly connected to the inner wall of the third slide groove (321). A push rod (34) for pushing the push block (32) is slidably provided on the support base (13). The push rod (34) passes through the support base (13) and enters the third slide groove (321) and is fixedly connected to the push block (32). A trigger plate (35) is fixedly connected on the support frame (1). One end of the push rod (34) can abut against the trigger plate (35).

6. The roller changing device for the cleaning section of a hot-dip galvanizing unit according to claim 5, characterized in that: The support base (13) is provided with a second limiting component (4) for limiting the movement of the support plate (31). The second limiting component (4) includes a limiting block (41), which is slidably disposed in the support base (13). A fourth sliding groove (411) is provided on the inner side wall of the third sliding groove (321) for sliding cooperation with the limiting block (41). The limiting block (41) can abut against the side wall of the push block (32) near the second return spring (33). A third return spring (42) is fixedly connected to the limiting block (41). The end of the third return spring (42) away from the limiting block (41) is in the fourth sliding groove (411). The sidewall is fixedly connected, and the push block (32) is provided with a receiving groove (43) for the limit block (41) to pass through. The support base (13) is slidably provided with a control rod (44). The control rod (44) is inserted into the fourth sliding groove (411). The control rod (44) abuts against the limit block (41). The sidewalls of the control rod (44) and the limit block (41) that are close to each other are provided with inclined surfaces. A fourth return spring (45) is fixedly connected to the control rod (44). The end of the fourth return spring (45) away from the control rod (44) is fixedly connected to the support base (13). The control rod (44) can abut against the trigger plate (35).

7. The roller changing device for the cleaning section of a hot-dip galvanizing unit according to claim 1, characterized in that: The support frame (1) is provided with a buffer plate (55) to restrict the movement of the maintenance submerged roller. The buffer plate (55) is slidably connected to the inner wall of the storage trough (14). A sixth return spring (56) is fixedly connected to the buffer plate (55). A barrier plate (57) is fixedly connected to the end of the sixth return spring (56) away from the buffer plate (55). The barrier plate (57) is slidably connected to the support frame (1).

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