A continuous hot-dip galvanizing equipment with controllable thickness of galvanized layer for hot-rolled steel strip

Abstract

The present invention provides a continuous hot-dip galvanizing device with controllable galvanized layer thickness for hot-rolled steel strips, which relates to the technical field of hot-rolled steel strip production and includes: a hot-dip galvanizing unit, a pressing unit, a driving unit, and a control unit; the pressing unit is installed on the hot-dip galvanizing bath; there are two groups of driving units in total, and the two groups of driving units are installed on the left and right sides of the hot-dip galvanizing bath; a hot-rolled steel strip is installed on the hot-dip galvanizing unit, the pressing unit, and the two groups of driving units; the control unit is installed on the front side of the hot-dip galvanizing bath; when one of the switches is in the pressed state, the buzzer works in the present invention, which can automatically prompt the staff that the length of the hot-rolled steel strip in the hot-dip galvanizing bath has changed, facilitating the staff to replace the driving accessories in time; it solves the problem that generally there is a lack of a driving detection structure. When the friction force between the driving roller and the hot-rolled steel strip is small, the staff cannot discover it in time, which is not conducive to the timely replacement of the driving roller and affects the driving effect of the hot-rolled steel strip.

Description

Technical Field

[0001] The present invention belongs to the technical field of hot-rolled steel strip production, and more specifically, particularly relates to a continuous hot-dip galvanizing device with a controllable thickness of the galvanized layer on a hot-rolled steel strip. Background Art

[0002] ‌The hot-rolled steel strip is rolled at high temperature, has good plasticity and ductility, and is suitable for manufacturing products of various shapes; when the hot-rolled steel strip is produced, hot-dip galvanizing treatment is required, and the hot-dip galvanizing treatment can significantly improve the corrosion resistance of the hot-rolled steel strip, and can also enhance the surface protection of the hot-rolled steel strip, thereby increasing the service life of the hot-rolled steel strip.

[0003] The currently used hot-dip galvanizing equipment still has the following problems:

[0004] 1. Generally, there is a lack of a driving detection structure. When the friction between the driving roller and the hot-rolled steel strip is small, the staff cannot detect it in time, which is not conducive to the timely replacement of the driving roller and affects the driving effect of the hot-rolled steel strip;

[0005] 2. When the staff approaches the hot-rolled steel strip during hot-dip galvanizing, the equipment cannot automatically stop working, and safety accidents are likely to occur during operation. Summary of the Invention

[0006] An embodiment of the present disclosure relates to a continuous hot-dip galvanizing device with a controllable thickness of the galvanized layer on a hot-rolled steel strip, which has a pressing unit, a driving unit, and a control unit; when one of the switches is in a pressed state, the buzzer works, which can automatically prompt the staff that the length of the hot-rolled steel strip in the hot-dip galvanizing bath has changed, facilitating the staff to replace the driving accessories in time; the controller controls the two linear electric cylinders and the two servo motors to stop working, avoiding safety accidents when the staff approaches the hot-rolled steel strip; solving the problems of being not conducive to the timely replacement of the driving roller and being prone to safety accidents during operation.

[0007] In a first aspect of the present disclosure, there is provided a continuous hot-dip galvanizing device with a controllable thickness of the galvanized layer on a hot-rolled steel strip, including: a hot-dip galvanizing unit, a pressing unit, a driving unit, and a control unit;

[0008] The hot-dip galvanizing unit includes: a hot-dip galvanizing bath and guiding rollers; there are two guiding rollers in total, and the two guiding rollers are rotatably installed on the hot-dip galvanizing bath; a controller is fixedly installed on the front side of the hot-dip galvanizing bath; the pressing unit is installed on the hot-dip galvanizing bath;

[0009] There are two groups of driving units in total, and the two groups of driving units are installed on the left and right sides of the hot-dip galvanizing bath; a hot-rolled steel strip is installed on the hot-dip galvanizing unit, the pressing unit, and the two groups of driving units; the control unit is installed on the front side of the hot-dip galvanizing bath.

[0010] In at least some embodiments, the pressing unit includes: a mounting flat plate, a movable detection frame, and a pressing positioning roller; the mounting flat plate is fixedly installed on the top of the hot-dip galvanizing bath by screws; the movable detection frame is slidably installed on the mounting flat plate; the pressing positioning roller is slidably installed on the hot-dip galvanizing bath, and the pressing positioning roller is also rotatably connected to the movable detection frame.

[0011] In at least some embodiments, the pressing unit further includes: a limit stop and a lithium battery; there are two limit stops in total, and the two limit stops are fixedly installed outside the movable detection frame, and the two limit stops are located on the upper and lower sides of the mounting flat plate; the lithium battery is fixedly installed on the top of the mounting flat plate.

[0012] In at least some embodiments, the pressing unit further includes: a buzzer and a switch; the buzzer is fixedly installed on the top of the mounting flat plate, and the buzzer is also electrically connected to the lithium battery; there are two switches in total, and the two switches are fixedly installed inside the two limit stops, and the two switches are also electrically connected to the lithium battery and the buzzer.

[0013] In at least some embodiments, the driving unit includes: a rectangular guide sleeve and a movable mounting frame; there are two rectangular guide sleeves in total, and the two rectangular guide sleeves are fixedly installed on the hot-dip galvanizing bath; the movable mounting frame is slidably installed on the two rectangular guide sleeves.

[0014] In at least some embodiments, the driving unit further includes: a linear electric cylinder and a friction driving roller; the linear electric cylinder is fixedly installed on the hot-dip galvanizing bath, and the output shaft of the linear electric cylinder is fixedly connected to the movable mounting frame, and the linear electric cylinder is also electrically connected to the controller; there are two friction driving rollers in total, and the two friction driving rollers are rotatably installed on the movable mounting frame, and the friction between the two friction driving rollers and the hot-rolled steel strip is greater than the gravity of the pressing unit.

[0015] In at least some embodiments, the driving unit further includes: a connecting gear and a servo motor; there are two connecting gears in total, and the two connecting gears are fixedly installed at the rear ends of the two friction driving rollers, and the two connecting gears are meshed; the servo motor is fixedly installed on the front side of the movable mounting frame by screws, and the output shaft of the servo motor is connected to the upper friction driving roller through a coupling, and the servo motor is also electrically connected to the controller.

[0016] In at least some embodiments, the control unit includes: a U-shaped connecting seat, a circular guide rod, and a movable connecting block; the U-shaped connecting seat is fixedly installed on the front side of the hot-dip galvanizing bath; there are two circular guide rods in total, and the two circular guide rods are fixedly installed on the U-shaped connecting seat; the movable connecting block is slidably installed outside the two circular guide rods.

[0017] In at least some embodiments, the control unit further includes: a control frame, a support base plate, and a return spring; the control frame is rotatably mounted on the movable connection block through a rotating shaft, and two grooves are formed on the control frame; the support base plate is fixedly mounted on the bottom of the movable connection block through screws, and the front end of the support base plate contacts the control frame; there are two return springs in total, and the two return springs are sleeved outside two circular guide rods, and the two return springs are located below the movable connection block.

[0018] In at least some embodiments, the control unit further includes: a first control button, a second control button, and a control panel; the first control button is fixedly mounted inside the movable connection block, and the first control button is also electrically connected to the controller. When the top of the movable connection block contacts the U-shaped connection seat, the first control button is in a pressed state; the second control button is fixedly mounted inside the control frame, and the second control button is also electrically connected to the controller. When the bottom of the control frame is flush with the bottom of the hot-dip galvanizing bath, the second control button is in a pressed state; the control panel is fixedly mounted on the control frame, and the control panel is also electrically connected to the controller.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The provision of the pressing positioning roller in the present invention presses the hot-rolled steel strip, ensuring that the hot-rolled steel strip can be in full contact with the liquid in the hot-dip galvanizing bath; when one of the switches is in a pressed state, the buzzer works, which can automatically prompt the staff that the length of the hot-rolled steel strip in the hot-dip galvanizing bath has changed, facilitating the staff to replace the driving accessories in a timely manner.

[0021] 2. When the two servo motors in the present invention work, the two friction driving rollers above rotate simultaneously, ensuring that the driving speeds on both sides are the same, ensuring that the moving time of the hot-rolled steel strip in the hot-dip galvanizing bath is consistent, realizing the continuous hot-dip galvanizing of the hot-rolled steel strip, and also ensuring that the thickness of the galvanized layer is the same; when the two servo motors work, the four friction driving rollers rotate simultaneously;

[0022] In addition, when the friction force between the two left friction driving rollers and the hot-rolled steel strip is less than the gravity of the pressing unit, the length of the hot-rolled steel strip moved by the two left friction driving rollers is less than the length of the hot-rolled steel strip moved by the two right friction driving rollers, shortening the length of the hot-rolled steel strip in the hot-dip galvanizing bath; when the friction force between the two right friction driving rollers and the hot-rolled steel strip is less than the gravity of the pressing unit, the length of the hot-rolled steel strip moved by the two right friction driving rollers is less than the length of the hot-rolled steel strip moved by the two left friction driving rollers, lengthening the length of the hot-rolled steel strip in the hot-dip galvanizing bath;

[0023] In addition, when the frictional force between the two friction drive rollers on the left side and the hot-rolled steel strip is less than the gravity of the pressing unit, the staff can contract a part of the output shaft of the linear electric cylinder on the left or right side to reset the pressing positioning roller to its original position; when the frictional force between the two friction drive rollers on the right side and the hot-rolled steel strip is less than the gravity of the pressing unit, the staff can extend a part of the output shaft of the linear electric cylinder on the left or right side to reset the pressing positioning roller to its original position; to avoid changes in the length of the hot-rolled steel strip in the hot-dip galvanizing bath due to mispulling or other reasons. When the staff resets the pressing positioning roller to its original position and the length of the hot-rolled steel strip in the hot-dip galvanizing bath changes again, it indicates that the friction drive roller in the corresponding direction is severely worn, which facilitates the staff to replace the friction drive roller in time and ensures the normal driving effect of the hot-rolled steel strip.

[0024] 3. The two grooves provided in the present invention facilitate the staff to place their feet in the two grooves; when the equipment is not in use, the staff can flip the control frame so that the control frame flips above the hot-dip galvanizing bath, reducing the occupied space of the equipment and having a good effect during equipment transportation and workshop floor cleaning.

[0025] In addition, when the feet of the staff come into contact with the two grooves, under the action of the weight of the staff, it drives the control frame to move downward automatically. When the bottom of the control frame is flush with the bottom of the hot-dip galvanizing bath, the second control button is in a pressed state. At this time, the staff can control the two linear electric cylinders and the two servo motors to work through the control panel; when the feet of the staff are separated from the two grooves, the movable connection block automatically moves upward under the action of the two return springs. When the top of the movable connection block contacts the U-shaped connection seat, the first control button is in a pressed state. At this time, the controller controls the two linear electric cylinders and the two servo motors to stop working, avoiding safety accidents when the staff approaches the hot-rolled steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0027] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0028] In the drawings:

[0029] Figure 1 The three-dimensional structural schematic diagram of the present invention is shown;

[0030] Figure 2 The present invention is shown Figure 1 The structural schematic diagram of the rear bottom view of the present invention;

[0031] Figure 3 The structural schematic diagram of the hot-dip galvanizing unit and the pressing unit of the present invention is shown;

[0032] Figure 4 shows the longitudinal central sectional structural schematic diagram of the present invention Figure 1 ;

[0033] Figure 5 shows the local enlarged structural schematic diagram of area A in the present invention Figure 4 ;

[0034] Figure 6 shows the structural schematic diagram of the driving unit of the present invention

[0035] Figure 7 shows the transverse central sectional structural schematic diagram of the present invention Figure 1 ;

[0036] Figure 8 shows the local enlarged structural schematic diagram of area B in the present invention Figure 2 ;

[0037] Figure 9 shows the structural schematic diagram of the control unit of the present invention

[0038] Figure 10 shows the local enlarged structural schematic diagram of area C in the present invention Figure 4 ;

[0039] List of reference numerals:

[0040] 100, hot-dip galvanizing unit; 101, hot-dip galvanizing bath; 102, guiding roller

[0041] 200, controller

[0042] 300, pressing unit; 301, mounting flat plate; 302, movable detection frame; 303, pressing positioning roller; 304, limit stop; 305, lithium battery; 306, buzzer; 307, switch

[0043] 400, driving unit; 401, rectangular guide sleeve; 402, movable mounting frame; 403, linear electric cylinder; 404, friction driving roller; 405, connecting gear; 406, servo motor

[0044] 500, hot-rolled steel strip

[0045] 600, control unit; 601, U-shaped connecting seat; 602, circular guide rod; 603, movable connecting block; 604, control frame; 6041, groove; 605, supporting bottom plate; 606, return spring; 607, first control button; 608, second control button; 609, control panel Detailed implementation manners

[0046] In order to make the objectives, solutions, and advantages of the technical solution of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0047] Embodiment: Please refer to Figures 1 to 10 As shown in the figure: The present invention provides a continuous hot-dip galvanizing device with a controllable thickness of the galvanized layer on a hot-rolled steel strip, including: a hot-dip galvanizing unit 100, a pressing unit 300, a driving unit 400, and a control unit 600; the hot-dip galvanizing unit 100 includes: a hot-dip galvanizing bath 101 and a guiding roller 102; there are two guiding rollers 102 in total, and the two guiding rollers 102 are rotatably installed on the hot-dip galvanizing bath 101; a controller 200 is fixedly installed on the front side of the hot-dip galvanizing bath 101; the pressing unit 300 is installed on the hot-dip galvanizing bath 101; there are two groups of driving units 400 in total, and the two groups of driving units 400 are installed on the left and right sides of the hot-dip galvanizing bath 101; a hot-rolled steel strip 500 is installed on the hot-dip galvanizing unit 100, the pressing unit 300, and the two groups of driving units 400; the control unit 600 is installed on the front side of the hot-dip galvanizing bath 101.

[0048] In the embodiments of the present disclosure, as Figures 3 to 5 shown in the figure, the pressing unit 300 includes: a mounting plate 301, a movable detection frame 302, and a pressing positioning roller 303; the mounting plate 301 is fixedly installed on the top of the hot-dip galvanizing bath 101 by screws; the movable detection frame 302 is slidably installed on the mounting plate 301; the pressing positioning roller 303 is slidably installed on the hot-dip galvanizing bath 101, and the pressing positioning roller 303 is also rotatably connected to the movable detection frame 302; the pressing unit 300 further includes: a limit stop 304 and a lithium battery 305; there are two limit stops 304 in total, and the two limit stops 304 are fixedly installed outside the movable detection frame 302, and the two limit stops 304 are located on the upper and lower sides of the mounting plate 301; the lithium battery 305 is fixedly installed on the top of the mounting plate 301; the pressing unit 300 further includes: a buzzer 306 and a switch 307; the buzzer 306 is fixedly installed on the top of the mounting plate 301, and the buzzer 306 is also electrically connected to the lithium battery 305; there are two switches 307 in total, and the two switches 307 are fixedly installed inside the two limit stops 304, and the two switches 307 are also electrically connected to the lithium battery 305 and the buzzer 306;

[0049] Its specific functions are as follows: Since the activity detection frame 302 is slidably installed on the installation flat plate 301, and the pressing positioning roller 303 is slidably installed on the hot-dip galvanizing bath 101, and the pressing positioning roller 303 is also rotatably connected to the activity detection frame 302, it plays a pressing role on the hot-rolled steel strip 500, ensuring that the hot-rolled steel strip 500 can be in full contact with the liquid in the hot-dip galvanizing bath 101; Also, since the two limit blocks 304 are fixedly installed outside the activity detection frame 302, and the two switches 307 are fixedly installed inside the two limit blocks 304, and the two switches 307 are also electrically connected to the lithium battery 305 and the buzzer 306, when one of the switches 307 is in the pressed state, the buzzer 306 works, which can automatically prompt the staff that the length of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 has changed, facilitating the staff to replace the drive accessories in a timely manner.

[0050] In the embodiment of the present disclosure, as Figures 6 to 8 shown, the drive unit 400 includes: a rectangular guide sleeve 401 and a movable mounting frame 402; There are two rectangular guide sleeves 401 in total, and the two rectangular guide sleeves 401 are fixedly installed on the hot-dip galvanizing bath 101; The movable mounting frame 402 is slidably installed on the two rectangular guide sleeves 401; The drive unit 400 further includes: a linear electric cylinder 403 and a friction drive roller 404; The linear electric cylinder 403 is fixedly installed on the hot-dip galvanizing bath 101, and the output shaft of the linear electric cylinder 403 is fixedly connected to the movable mounting frame 402, and the linear electric cylinder 403 is also electrically connected to the controller 200; There are two friction drive rollers 404 in total, and the two friction drive rollers 404 are rotatably installed on the movable mounting frame 402, and the friction between the two friction drive rollers 404 and the hot-rolled steel strip 500 is greater than the gravity of the pressing unit 300; The drive unit 400 further includes: connecting gears 405 and a servo motor 406; There are two connecting gears 405 in total, and the two connecting gears 405 are fixedly installed at the rear ends of the two friction drive rollers 404, and the two connecting gears 405 are meshed and connected; The servo motor 406 is fixedly installed on the front side of the movable mounting frame 402 by screws, and the output shaft of the servo motor 406 is connected to the upper friction drive roller 404 through a coupling, and the servo motor 406 is also electrically connected to the controller 200;

[0051] Its specific functions are as follows: Since the four friction drive rollers 404 are rotatably installed on the two movable mounting brackets 402, and the frictional force between the two friction drive rollers 404 and the hot-rolled steel strip 500 is greater than the gravity of the pressing unit 300, and the output shafts of the two servo motors 406 are connected to the two upper friction drive rollers 404 through couplings. When the two servo motors 406 work, the two upper friction drive rollers 404 rotate simultaneously, ensuring the same driving speed on both sides, ensuring that the moving time of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 is the same, realizing the continuous hot-dip galvanizing of the hot-rolled steel strip 500, and also ensuring the same thickness of the galvanized layer. Also, since the four connecting gears 405 are fixedly installed at the rear ends of the four friction drive rollers 404, and the two connecting gears 405 on the left are meshed and connected, and the two connecting gears 405 on the right are meshed and connected. When the two servo motors 406 work, the four friction drive rollers 404 rotate simultaneously;

[0052] In addition, when the frictional force between the two left friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the length of the hot-rolled steel strip 500 moved by the two left friction drive rollers 404 is less than the length of the hot-rolled steel strip 500 moved by the two right friction drive rollers 404, making the length of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 shorter; when the frictional force between the two right friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the length of the hot-rolled steel strip 500 moved by the two right friction drive rollers 404 is less than the length of the hot-rolled steel strip 500 moved by the two left friction drive rollers 404, making the length of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 longer;

[0053] In addition, since the two linear electric cylinders 403 are fixedly installed on the hot-dip galvanizing bath 101, and the output shafts of the two linear electric cylinders 403 are fixedly connected to the two movable mounting brackets 402. When the frictional force between the two left friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the staff can retract a part of the output shaft of the left or right linear electric cylinder 403 to reset the pressing positioning roller 303 to its original position; when the frictional force between the two right friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the staff can extend a part of the output shaft of the left or right linear electric cylinder 403 to reset the pressing positioning roller 303 to its original position; avoiding the change in the length of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 due to mispulling or other reasons. When the staff resets the pressing positioning roller 303 to its original position and the length of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 changes again, it indicates that the friction drive roller 404 in the corresponding direction is severely worn, facilitating the staff to replace the friction drive roller 404 in time and ensuring the normal driving effect of the hot-rolled steel strip 500.

[0054] Among them, the staff can install cleaning equipment between the hot-dip galvanizing bath 101 and the two friction drive rollers 404 on the left side to facilitate the pre-removal of grease and dirt on the surface of the hot-rolled steel strip 500; they can also install cooling equipment between the hot-dip galvanizing bath 101 and the two friction drive rollers 404 on the right side to facilitate the cooling of the hot-rolled steel strip 500 after hot-dip galvanizing.

[0055] In the embodiment of the present disclosure, as Figure 9 and Figure 10 shown, the control unit 600 includes: a U-shaped connecting seat 601, a circular guide rod 602, and a movable connecting block 603; the U-shaped connecting seat 601 is fixedly installed on the front side of the hot-dip galvanizing bath 101; there are two circular guide rods 602 in total, and the two circular guide rods 602 are fixedly installed on the U-shaped connecting seat 601; the movable connecting block 603 is slidably installed outside the two circular guide rods 602; the control unit 600 further includes: a control frame 604, a support bottom plate 605, and a return spring 606; the control frame 604 is rotatably installed on the movable connecting block 603 through a rotating shaft, and two grooves 6041 are formed on the control frame 604; the support bottom plate 605 is fixedly installed on the bottom of the movable connecting block 603 through screws, and the front end of the support bottom plate 605 is in contact with the control frame 604; there are two return springs 606 in total, and the two return springs 606 are sleeved outside the two circular guide rods 602, and the two return springs 606 are located below the movable connecting block 603; the control unit 600 further includes: a first control button 607, a second control button 608, and a control panel 609; the first control button 607 is fixedly installed inside the movable connecting block 603, and the first control button 607 is also electrically connected to the controller 200. When the top of the movable connecting block 603 contacts the U-shaped connecting seat 601, the first control button 607 is in a pressed state; the second control button 608 is fixedly installed inside the control frame 604, and the second control button 608 is also electrically connected to the controller 200. When the bottom of the control frame 604 is flush with the bottom of the hot-dip galvanizing bath 101, the second control button 608 is in a pressed state; the control panel 609 is fixedly installed on the control frame 604, and the control panel 609 is also electrically connected to the controller 200;

[0056] Its specific function is: because two grooves 6041 are formed on the control frame 604, it is convenient for the staff's feet to be placed in the two grooves 6041; and because the control frame 604 is rotatably installed on the movable connecting block 603 through a rotating shaft, and the support bottom plate 605 is fixedly installed on the bottom of the movable connecting block 603 through screws, and the front end of the support bottom plate 605 is in contact with the control frame 604, when the equipment is not in use, the staff can flip the control frame 604 so that the control frame 604 is flipped above the hot-dip galvanizing bath 101, reducing the occupied space of the equipment, which has a good effect during equipment transportation and workshop floor cleaning;

[0057] In addition, since the second control button 608 is fixedly installed inside the control frame 604 and is also electrically connected to the controller 200, when the feet of the staff come into contact with the two grooves 6041, under the action of the weight of the staff, the control frame 604 is driven to move downward automatically. When the bottom of the control frame 604 is flush with the bottom of the hot-dip galvanizing tank 101, the second control button 608 is in a pressed state. At this time, the staff can control the two linear electric cylinders 403 and the two servo motors 406 to work through the control panel 609; also, since the movable connection block 603 is slidably installed outside the two circular guide rods 602, and the two return springs 606 are sleeved outside the two circular guide rods 602, and the two return springs 606 are located below the movable connection block 603. When the feet of the staff are separated from the two grooves 6041, the movable connection block 603 automatically moves upward under the action of the two return springs 606. When the top of the movable connection block 603 contacts the U-shaped connection seat 601, the first control button 607 is in a pressed state. At this time, the controller 200 controls the two linear electric cylinders 403 and the two servo motors 406 to stop working, avoiding safety accidents when the staff approaches the hot-rolled steel strip 500.

[0058] The specific usage mode and function of this embodiment:

[0059] When the present invention is in use, first, the staff installs the hot-dip galvanizing tank 101 at a suitable position in the workshop through bolts. Then, the hot-rolled steel strip 500 is installed between the four friction drive rollers 404, and it is also necessary to ensure that the hot-rolled steel strip 500 is in contact with the two guiding rollers 102 and the pressing and positioning roller 303. Then, the staff places the feet in the two grooves 6041. When the feet of the staff come into contact with the two grooves 6041, under the action of the weight of the staff, the control frame 604 is driven to move downward automatically. When the bottom of the control frame 604 is flush with the bottom of the hot-dip galvanizing tank 101, the second control button 608 is in a pressed state. At this time, the staff can control the two linear electric cylinders 403 and the two servo motors 406 to work through the control panel 609. When the two servo motors 406 work, the two upper friction drive rollers 404 rotate simultaneously, ensuring that the driving speeds on both sides are the same, ensuring that the moving time of the hot-rolled steel strip 500 in the hot-dip galvanizing tank 101 is consistent, realizing the continuous hot-dip galvanizing of the hot-rolled steel strip 500 and also ensuring that the thickness of the galvanized layer is the same. When the two servo motors 406 work, the four friction drive rollers 404 rotate simultaneously under the action of the four connecting gears 405. When one of the switches 307 is in a pressed state, the buzzer 306 works, which can automatically prompt the staff that the length of the hot-rolled steel strip 500 in the hot-dip galvanizing tank 101 has changed, facilitating the staff to replace the drive accessories in a timely manner. When the frictional force between the two left friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the length of the hot-rolled steel strip 500 moved by the two left friction drive rollers 404 is less than the length of the hot-rolled steel strip 500 moved by the two right friction drive rollers 404, making the length of the hot-rolled steel strip 500 in the hot-dip galvanizing tank 101 shorter. When the frictional force between the two right friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the length of the hot-rolled steel strip 500 moved by the two right friction drive rollers 404 is less than the length of the hot-rolled steel strip 500 moved by the two left friction drive rollers 404, making the length of the hot-rolled steel strip 500 in the hot-dip galvanizing tank 101 longer. When the frictional force between the two left friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the staff can contract a part of the output shaft of the left or right linear electric cylinder 403 to reset the pressing and positioning roller 303 to the original position. When the frictional force between the two right friction drive rollers 404 and the hot-rolled steel strip 500 is less than the gravity of the pressing unit 300, the staff can extend a part of the output shaft of the left or right linear electric cylinder 403 to reset the pressing and positioning roller 303 to the original position.To avoid changes in the length of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 due to mispulling or other reasons, when the staff resets the pressing positioning roller 303 to its original position and the length of the hot-rolled steel strip 500 in the hot-dip galvanizing bath 101 changes again, it indicates that the friction drive roller 404 in the corresponding direction is severely worn, facilitating the staff to replace the friction drive roller 404 in a timely manner and ensuring the normal driving effect of the hot-rolled steel strip 500; when the staff's feet are separated from the two grooves 6041, the movable connecting block 603 automatically moves upward under the action of the two return springs 606. When the top of the movable connecting block 603 contacts the U-shaped connecting seat 601, the first control button 607 is in a pressed state. At this time, the controller 200 controls the two linear electric cylinders 403 and the two servo motors 406 to stop working, avoiding safety accidents when the staff approaches the hot-rolled steel strip 500; when the equipment is not in use, the staff can flip the control frame 604 so that the control frame 604 is flipped above the hot-dip galvanizing bath 101, reducing the occupied space of the equipment and having a good effect during equipment transportation and workshop floor cleaning.

[0060] In this article, the following points need to be noted:

[0061] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure. Other structures can refer to the general design.

[0062] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0063] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A continuous hot-dip galvanizing equipment with controllable galvanized layer thickness of hot-rolled steel strip, comprising: A hot-dip galvanizing unit (100), a pressing unit (300), a driving unit (400) and a control unit (600); The hot-dip galvanizing unit (100) comprises: a hot-dip galvanizing pool (101) and a guide roller (102); two guide rollers (102) are provided, and the two guide rollers (102) are rotatably mounted on the hot-dip galvanizing pool (101); a controller (200) is fixedly mounted on the front side of the hot-dip galvanizing pool (101); the pressing unit (300) is mounted on the hot-dip galvanizing pool (101); The driving units (400) are provided with two groups in total, and the two groups of driving units (400) are installed on the left and right sides of the hot-dip galvanizing pool (101); hot-rolled steel strips (500) are installed on the hot-dip galvanizing units (100), the pressing units (300) and the two groups of driving units (400); the control unit (600) is installed on the front side of the hot-dip galvanizing pool (101); The pressing unit (300) comprises: a mounting plate (301), a movable detection frame (302) and a pressing positioning roller (303); the mounting plate (301) is fixedly mounted on the top of the hot-dip galvanizing pool (101) by means of screws; the movable detection frame (302) is slidably mounted on the mounting plate (301); the pressing positioning roller (303) is slidably mounted on the hot-dip galvanizing pool (101), and the pressing positioning roller (303) is also rotatably connected to the movable detection frame (302); the pressing unit (300) further comprises: a limit stopper (304) and a lithium battery (305); a total of two limit stops (304) are provided, and the two limit stops (304) are fixedly mounted on the outside of the movable detection frame (302), and the two limit stops (304) are located on the upper and lower sides of the mounting plate (301); The lithium battery (305) is fixedly mounted on the top of the mounting plate (301); the pressing unit (300) further comprises: a buzzer (306) and a switch (307); the buzzer (306) is fixedly mounted on the top of the mounting plate (301), and the buzzer (306) is also electrically connected to the lithium battery (305); there are two switches (307) in total, and the two switches (307) are fixedly mounted inside the two limit blocks (304), and the two switches (307) are also electrically connected to the lithium battery (305) and the buzzer (306); when one of the switches (307) is in a pressed state, the buzzer (306) works, and can automatically remind a worker that the length of the hot-rolled steel strip (500) in the hot-dip galvanizing pool (101) has changed, so that the worker can replace the driving accessories in time.

2. The continuous hot-dip galvanizing equipment with controllable galvanized layer thickness of hot-rolled steel strip according to claim 1, characterized in that: The driving unit (400) comprises: a rectangular guide sleeve (401) and a movable mounting frame (402); two rectangular guide sleeves (401) are provided, and the two rectangular guide sleeves (401) are fixedly mounted on the hot-dip galvanizing pool (101); and the movable mounting frame (402) is slidably mounted on the two rectangular guide sleeves (401).

3. The continuous hot-dip galvanizing equipment with controllable galvanized layer thickness of hot-rolled steel strip according to claim 2, characterized in that: The driving unit (400) further comprises: a linear electric cylinder (403) and a friction drive roller (404); the linear electric cylinder (403) is fixedly mounted on the hot-dip galvanizing pool (101), and the output shaft of the linear electric cylinder (403) is fixedly connected to the movable mounting frame (402), and the linear electric cylinder (403) is also electrically connected to the controller (200); there are two friction drive rollers (404) in total, and the two friction drive rollers (404) are rotatably mounted on the movable mounting frame (402), and the friction force between the two friction drive rollers (404) and the hot-rolled steel strip (500) is greater than the gravity of the pressing unit (300).

4. The continuous hot-dip galvanizing equipment with controllable galvanized layer thickness of hot-rolled steel strip according to claim 3, characterized in that: The driving unit (400) further comprises: a connecting gear (405) and a servo motor (406); there are two connecting gears (405) in total, and the two connecting gears (405) are fixedly mounted on the rear ends of the two friction drive rollers (404), and the two connecting gears (405) are meshingly connected; the servo motor (406) is fixedly mounted on the front side of the movable mounting frame (402) by means of screws, and the output shaft of the servo motor (406) is connected to the upper friction drive roller (404) by means of a coupling, and the servo motor (406) is also electrically connected to the controller (200).

5. The continuous hot-dip galvanizing equipment with controllable galvanized layer thickness of hot-rolled steel strip according to claim 1, characterized in that: The control unit (600) comprises: A U-shaped connection seat (601), a circular guide rod (602) and a movable connection block (603); the U-shaped connection seat (601) is fixedly mounted on the front side of the hot-dip galvanizing pool (101); two circular guide rods (602) are provided, and the two circular guide rods (602) are fixedly mounted on the U-shaped connection seat (601); and the movable connection block (603) is slidably mounted on the outside of the two circular guide rods (602).

6. The continuous hot-dip galvanizing equipment with controllable galvanized layer thickness of hot-rolled steel strip according to claim 5, characterized in that: The control unit (600) further comprises: a control frame (604), a support base plate (605) and a return spring (606); the control frame (604) is rotatably mounted on the movable connection block (603) via a rotating shaft, and two grooves (6041) are provided on the control frame (604); the support base plate (605) is fixedly mounted on the bottom of the movable connection block (603) via screws, and the front end of the support base plate (605) is in contact with the control frame (604); two return springs (606) are provided, and the two return springs (606) are sleeved on the outside of the two circular guide rods (602), and the two return springs (606) are located below the movable connection block (603).

7. The continuous hot-dip galvanizing equipment with controllable galvanized layer thickness of hot-rolled steel strip according to claim 6, characterized in that: The control unit (600) further comprises: a first control button (607), a second control button (608) and a control panel (609); the first control button (607) is fixedly mounted inside the movable connection block (603), and the first control button (607) is also electrically connected to the controller (200), and when the top of the movable connection block (603) contacts the U-shaped connection seat (601), the first control button (607) is in a pressed state; the second control button (608) is fixedly mounted inside the control frame (604), and the second control button (608) is also electrically connected to the controller (200), and when the bottom of the control frame (604) is flush with the bottom of the hot-dip galvanizing pool (101), the second control button (608) is in a pressed state; the control panel (609) is fixedly mounted on the control frame (604), and the control panel (609) is also electrically connected to the controller (200).

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