A continuous hot dip galvanizing apparatus

Abstract

This utility model discloses a continuous hot-dip galvanizing device in the field of hot-dip galvanizing technology. The device includes a rectangular galvanizing storage tank filled with molten zinc. A relay structure is positioned above the storage tank for galvanizing steel materials inserted into the tank. The relay structure comprises a first frame, a first drive shaft, a first drive belt, a second frame, a second drive shaft, a second drive belt, and a connecting hook. The first frame is fixedly connected to one side of the front wall of the storage tank. The first drive shaft is positioned on the wall of the first frame, and the first drive belt is fitted onto the wall of the first drive shaft. The second frames are symmetrically fixedly connected to the front and rear walls of the storage tank. The second drive shaft is positioned between the symmetrical second frames, and the second drive belt is fitted onto the outer wall of the second drive shaft. The connecting hook is fixedly connected to the outer wall of the second drive belt, which is located directly above the storage tank.

Description

Technical Field

[0001] This utility model belongs to the field of hot-dip galvanizing, specifically, it relates to a continuous hot-dip galvanizing device. Background Technology

[0002] Hot-dip galvanizing is a metal corrosion protection process that involves immersing steel products in molten zinc to form a zinc-iron alloy protective layer on their surface.

[0003] Traditional hot-dip galvanizing processes can only galvanize the next piece of steel after the previous piece has been galvanized and removed from the hoist. This process is repeated and cannot achieve continuous galvanizing of steel, resulting in low efficiency of traditional hot-dip galvanizing equipment.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A continuous hot-dip galvanizing apparatus, comprising:

[0007] A galvanizing storage tank, which is rectangular in shape, contains molten zinc inside its cavity;

[0008] A relay structure is installed above the galvanizing storage tank for galvanizing steel materials inserted into the tank cavity. The relay structure includes: a first frame, a first drive shaft, a first drive belt, a second frame, a second drive shaft, a second drive belt, and a connecting hook. The first frame is fixedly connected to one side of the front wall of the galvanizing storage tank. The first drive shaft is located on the wall of the first frame, and the first drive belt is sleeved on the wall of the first drive shaft. The second frames are symmetrically fixedly connected to the front and rear walls of the galvanizing storage tank. The second drive shaft is located between the symmetrical second frames, and the second drive belt is sleeved on the outer wall of the second drive shaft. The connecting hook is fixedly connected to the outer wall of the second drive belt. The second drive belt is located directly above the galvanizing storage tank.

[0009] In a preferred embodiment of the present invention, the first frame is a herringbone frame, and the first frames are symmetrically arranged on one side of the galvanizing storage tank. A gantry frame is installed on the top between the symmetrical first frames, and the first drive shaft is cylindrical.

[0010] In a preferred embodiment of this utility model, the second frame is also a herringbone frame. The bottom of the symmetrical second frame is connected by a rectangular rod. The second drive shaft is symmetrically connected to the symmetrical second frame. The second drive belt is sleeved on the outer wall of the symmetrical second drive shaft. The hook is a J-shaped rod with a gradually narrowing opening. The same hooks are symmetrically arranged on the front and back of the outer wall of the second drive belt. Two sets of opposite hooks are symmetrically arranged on the outer wall of the second drive belt.

[0011] In a preferred embodiment of this utility model, the relay structure further includes a first connecting plate, a first motor, and connecting rods. The first connecting plates are fixedly connected to the opposite walls of the symmetrical first frame. The first motor is fixedly connected to the outer wall of the symmetrical first connecting plates. The first drive shafts are symmetrically rotated and connected to the opposite walls of the symmetrical first connecting plates. A first drive belt is sleeved on the outer wall of each symmetrical first drive shaft. The first motor can drive the corresponding first drive shaft to rotate. The connecting rods are fixedly connected to the outer wall of each first drive belt. The connecting rods are rectangular rods and are evenly arranged on the outer wall of the first drive belt. Each set of symmetrical hooks can pass through the outer wall of the symmetrical first drive shaft.

[0012] In a preferred embodiment of this utility model, the relay structure further includes a second connecting plate, a second motor, and a limiting edge. The second connecting plate is fixedly connected to the wall surfaces of the symmetrical second frames facing each other. The second motor is fixedly connected to the outer wall surface of the front second connecting plate. The symmetrical second transmission shafts are rotatably connected between the symmetrical second connecting plates. The second motor can drive the upper second transmission shaft to rotate. The limiting edge is symmetrically fixedly connected in the cavity of the second transmission belt. The symmetrical limiting edge will always fit against the end of the second transmission shaft.

[0013] In a preferred embodiment of this utility model, the relay structure further includes a third frame, a third connecting plate, a third motor, a third drive shaft, a third drive belt, guide blocks, and an arc plate. The third frame is symmetrically fixedly connected to the side wall of the galvanized storage pool opposite to the first frame. The top of the symmetrical third frame is also equipped with the same gantry frame. The third connecting plate is fixedly connected to the wall of each third frame between the symmetrical third frames. The third motor is fixedly connected to the outer wall of each third connecting plate. The third drive shaft is symmetrically rotatably connected to the wall of each third connecting plate. The third motor can drive the corresponding third drive shaft to rotate. The third drive belt is sleeved on the outer wall of each group of symmetrical third drive shafts. The guide blocks are symmetrically fixedly connected to the outer wall of each third drive belt. The arc plate is fixedly connected to the end of each guide block.

[0014] In a preferred embodiment of this utility model, the spacing of the symmetrical third transmission belt is the same as that of the symmetrical first transmission belt, and the front and rear symmetrical hooks can also pass through the outer wall of the symmetrical third transmission belt. The guide block is a right-angled triangular block, the arc plate is an arc-shaped plate, and the opening of the arc plate and the inclined surface of the guide block face the same direction.

[0015] In a preferred embodiment of this utility model, a lifting structure is provided between the symmetrical first transmission belts. The lifting structure includes a clamping rod, a limiting ring, an alignment block, a rotating sleeve, and a lifting clamp. The clamping rod is clamped between adjacent connecting rods and is cylindrical. The limiting ring is symmetrically fixedly connected to the wall surface of the clamping rod and is circular. The alignment blocks are symmetrically fixedly connected to both ends of the clamping rod and are frustum-shaped. The inclined surfaces of the symmetrical alignment blocks face each other, and the spacing between the symmetrical alignment blocks is consistent with the spacing between the outer walls of the symmetrical first transmission belts. The rotating sleeve is fitted onto the wall surface of the clamping rod at the symmetrical limiting ring. The outer wall surface of the symmetrical limiting ring can fit closely with the spacing of the symmetrical first transmission belts. A lifting sling is installed at the bottom of the rotating sleeve, and a lifting clamp is fixedly connected to the bottom of the lifting sling.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. By setting up a relay structure, the galvanizing of each batch of steel can be achieved through the cooperation of multiple structures. Compared with the traditional galvanizing process, this solution has a higher efficiency.

[0018] 2. By setting up a hoisting structure and using symmetrical alignment blocks, the clamp rod can be automatically aligned, preventing it from slipping during movement. The rotatable swivel sleeve can automatically maintain the position of the lifting clamp, thereby improving the stability of the clamp rod during movement.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a front view of the present invention;

[0023] Figure 3 This is a disassembly diagram of the clamp and connecting rod of this utility model;

[0024] Figure 4 This is an exploded view of the wall structure of the second frame of this utility model;

[0025] Figure 5 This is a three-dimensional view of the wall structure of the third frame of this utility model.

[0026] In the diagram: 20. Galvanized storage tank; 21. Clamping rod; 22. Limiting ring; 23. Alignment block; 24. Rotating sleeve; 25. Lifting clamp; 30. First frame; 31. First connecting plate; 32. First motor; 33. First drive shaft; 34. First drive belt; 35. Connecting rod; 40. Second frame; 41. Second connecting plate; 42. Second motor; 43. Second drive shaft; 44. Second drive belt; 45. Edge limiting; 46. Connecting hook; 50. Third frame; 51. Third connecting plate; 52. Third motor; 53. Third drive shaft; 54. Third drive belt; 55. Guide block; 56. Arc plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0028] like Figure 1 and Figure 2 As shown, a continuous hot-dip galvanizing device includes: a galvanizing storage tank 20, which is rectangular in shape and contains molten zinc. A gas heater for heating is installed at the bottom of the galvanizing storage tank 20. A platinum-rhodium thermocouple for temperature detection is installed inside the galvanizing storage tank 20 and is used in conjunction with PID adaptive adjustment to regulate the temperature of the molten zinc. This is existing technology and will not be described in detail here.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a relay structure is installed above the galvanizing storage tank 20 for galvanizing steel materials inserted into the tank 20. The relay structure includes: a first frame 30, a first drive shaft 33, a first drive belt 34, a second frame 40, a second drive shaft 43, a second drive belt 44, and a hook 46. The first frame 30 is fixedly connected to one side of the front wall of the galvanizing storage tank 20. The first drive shaft 33 is located on the wall of the first frame 30. The first drive belt 34 is sleeved on the wall of the first drive shaft 33. The second frames 40 are symmetrically fixedly connected to the front and rear walls of the galvanizing storage tank 20. The second drive shaft 43 is located between the symmetrical second frames 40. The second drive belt 44 is sleeved on the outer wall of the second drive shaft 43. The hook 46 is fixedly connected to the outer wall of the second drive belt 44. The second drive belt 44 is located directly above the galvanizing storage tank 20.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the first frame 30 is a herringbone frame, symmetrically arranged front and back on one side of the galvanizing storage tank 20. A gantry frame is installed at the top between the symmetrical first frames 30. The first drive shaft 33 is cylindrical. The second frame 40 is also a herringbone frame, with the bottom of the symmetrical second frames 40 connected by rectangular rods. The second drive shaft 43 is symmetrically connected vertically between the symmetrical second frames 40. The second drive belt 44 is sleeved on the outer wall of the symmetrical second drive shaft 43. The hook 46 is a J-shaped rod with a gradually narrowing opening. The same hooks 46 are symmetrically arranged front and back on the outer wall of the second drive belt 44. Two sets of opposing hooks 46 are symmetrically arranged on the outer wall of the second drive belt 44. The relay structure also includes a first connecting plate 31, a first motor 32, and a connecting rod 35. A connecting plate 31 is fixedly connected to the opposite walls of the symmetrical first frame 30. A first motor 32 is fixedly connected to the outer wall of the symmetrical first connecting plate 31. First drive shafts 33 are symmetrically rotated and connected to the opposite walls of the symmetrical first connecting plates 31. A first drive belt 34 is sleeved on the outer wall of each symmetrical first drive shaft 33. The first motor 32 can drive the corresponding first drive shaft 33 to rotate. A connecting rod 35 is fixedly connected to the outer wall of each first drive belt 34. The connecting rod 35 is rectangular and is evenly distributed on the outer wall of the first drive belt 34. Each set of symmetrical hooks 46 can pass through the outer wall of the symmetrical first drive shaft 33. The relay structure also includes a second connecting plate 41, a second motor 42, and a limiting edge 45. Two connecting plates 41 are fixedly connected to the walls of the symmetrical second frames 40 facing each other. A second motor 42 is fixedly connected to the outer wall of the front connecting plate 41. Symmetrical second drive shafts 43 are rotatably connected between the symmetrical second connecting plates 41. The second motor 42 can drive the upper second drive shaft 43 to rotate. The relay structure also includes a third frame 50, a third connecting plate 51, a third motor 52, a third drive shaft 53, a third drive belt 54, a guide block 55, and an arc plate 56. The third frame 50 is symmetrically fixedly connected to the side walls of the galvanized storage tank 20 opposite to the first frame 30. The same gantry frame is also installed on the top of the symmetrical third frame 50. The third connecting plate 51 is fixedly connected to the wall of each of the symmetrical third frames 50. The third motor 52 is fixedly connected to the outer wall of each third connecting plate 51. The third drive shaft 53 is symmetrically rotatably connected to the wall of each third connecting plate 51. The third motor 52 can drive the corresponding third drive shaft 53 to rotate. The third drive belt 54 is sleeved on the outer wall of each set of left-right symmetrical third drive shafts 53. The guide block 55 is symmetrically fixedly connected to the outer wall of each third drive belt 54. The arc plate 56 is fixedly connected to the end of each guide block 55. The spacing of the symmetrical third drive belts 54 is the same as that of the symmetrical first drive belts 34. The front and rear symmetrical hooks 46 can also pass through the outer wall of the symmetrical third drive belts 54. The guide block 55 is a right-angled triangular block, and the arc plate 56 is an arc-shaped plate. The opening of the arc plate 56 and the inclined surface of the guide block 55 face the same direction.A lifting structure is connected between the symmetrical first transmission belts 34. The lifting structure includes a clamping rod 21, a limiting ring 22, an alignment block 23, a swivel sleeve 24, and a lifting clamp 25.

[0031] In practical use, firstly, place the clamp 21 between adjacent connecting rods 35 at the top of the symmetrical first transmission belt 34. At this time, the symmetrical limiting ring 22 will be located between the symmetrical first transmission belts 34, and the symmetrical alignment block 23 will be located outside the symmetrical first transmission belts 34. At this time, the lifting clamp 25 will be located between the symmetrical first transmission belts 34. Then, the required galvanized steel is fixedly clamped on the lifting clamp 25. Then, the power is turned on, and the symmetrical first motor 32 is synchronously controlled by outputting the same source command through the PLC / PAC. The first motor 32 will drive the corresponding first transmission shaft 33 to rotate. When the first transmission shaft 33 rotates, it will drive the first transmission belt 34 on its wall to move along the outer wall of the symmetrical first transmission shaft 33. As the first transmission belt 34 moves, The connecting rod 35 can move synchronously, and the moving connecting rod 35 can drive the locking rod 21 to move towards the second transmission belt 44. The second connecting plate 41 will drive the second transmission shaft 43 to rotate. When the second transmission shaft 43 rotates, it will drive the second transmission belt 44 to transmit power on the outer wall of the symmetrical second transmission shaft 43. The second transmission belt 44 will drive the hook 46 to transmit power synchronously. When the symmetrical hook 46 is displaced to be flush with the top of the first transmission belt 34, it will stop moving. At this time, another set of symmetrical hooks 46 will be located in the opposite position on the other side. As the connecting rod 35 drives the locking rod 21 to move, when the connecting rod 35 is about to move downward, the locking rod 21 will be displaced to the hook 46 that is stopped on the side wall of the first transmission belt 34, and will move into the hook 46 from the opening of the hook 46. Inside the opening of 6, the second motor 42 will restart the second drive shaft 43 to rotate. As the second drive shaft 43 drives the second drive belt 44 and the hook 46, the steel suspended from the wall of the lifting clamp 25 will enter the molten zinc in the galvanizing tank 20. After galvanizing, the second drive shaft 43 will continue to drive the second drive belt 44. At this time, the lever 21 will be driven upward by the hook 46. The symmetrical third motor 52 achieves synchronous control through the same control method as the symmetrical first motor 32. When the hook 46 drives the lever 21 to move to be flush with the top of the third drive belt 54, the third motor 52 will drive the third drive shaft 53 to rotate. The third drive shaft 53 will drive the third drive belt 54 to rotate on its wall. The guide block 55 and arc plate 56 on the lower wall of 54 will move towards the second frame 40. At this time, the inclined surface of the guide block 55 will first contact the bottom of the clamping rod 21. As the inclined surface of the guide block 55 gradually contacts the lower arc surface of the clamping rod 21, it will push the clamping rod 21 towards the opening of the hook 46. When the clamping rod 21 moves out of the opening of the hook 46, the clamping rod 21 will be located in the cavity of the arc plate 56. Simultaneously, the second transmission shaft 43 is controlled to rotate, so that the hook 46 continues to move upward, thereby separating the clamping rod 21 from the wall of the hook 46. At this time, the clamping rod 21 will be displaced onto the symmetrical third transmission belt 54. At this time, the galvanized steel can be removed from the wall of the clamping clamp 25. When the guide block 55 and arc plate 56 separate the clamping rod 21 from the cavity of the hook 46,The next latch 21 will simultaneously enter the connecting hook 46 cavity on the other side. In this scheme, all the connection points of the conveyor belt structure are limited and connected by teeth and grooves. The individual control of the first motor 32, the second motor 42 and the third motor 52 mentioned above is implemented by PLC.

[0032] In summary, by setting up a relay structure and coordinating multiple structures, it is possible to hoist and move each batch of steel for galvanizing one by one. Compared with the traditional galvanizing process, this solution has a higher efficiency.

[0033] like Figure 5 As shown, the spacing of the symmetrical third transmission belt 54 is the same as that of the symmetrical first transmission belt 34. The front and rear symmetrical hooks 46 can also pass through the outer wall of the symmetrical third transmission belt 54. The guide block 55 is a right-angled triangular block, and the arc plate 56 is an arc-shaped plate. The opening of the arc plate 56 and the inclined surface of the guide block 55 face the same direction. The locking rod 21 is locked between the adjacent connecting rods 35. The locking rod 21 is cylindrical. The limiting ring 22 is symmetrically fixed to the wall surface of the locking rod 21. The limiting ring 22 is circular. The alignment blocks 23 are symmetrically fixedly connected to both ends of the clamping rod 21. The alignment blocks 23 are in the shape of a frustum. The inclined surfaces of the symmetrical alignment blocks 23 face each other. The spacing between the symmetrical alignment blocks 23 is consistent with the spacing between the outer walls of the symmetrical first transmission belt 34. The rotating sleeve 24 is fitted onto the wall of the clamping rod 21 at the symmetrical limiting ring 22. The outer wall of the symmetrical limiting ring 22 can fit closely with the spacing of the symmetrical first transmission belt 34. A sling is installed at the bottom of the rotating sleeve 24, and a lifting clamp 25 is fixedly connected to the bottom of the sling.

[0034] In practical use, when the spacing between the symmetrical alignment blocks 23 and the symmetrical hooks 46 are offset, the inclined surfaces of the alignment blocks 23 will automatically align. When the lifting clamp 25 lifts the steel, the rotating sleeve 24 will always drive the lifting clamp 25 to keep the lifting clamp 25 in a state below the rotating sleeve 24.

[0035] In summary, by setting up a hoisting structure and using symmetrical alignment blocks 23, the clamp rod 21 can be automatically aligned, preventing it from slipping during movement. The rotatable rotating sleeve 24 can automatically maintain the position of the lifting clamp 25, thereby improving the stability of the clamp rod 21 during movement.

[0036] Working principle: First, place the clamp 21 between adjacent connecting rods 35 at the top of the symmetrical first transmission belt 34. At this time, the symmetrical limiting ring 22 will be located between the symmetrical first transmission belts 34, and the symmetrical alignment block 23 will be located outside the symmetrical first transmission belts 34. At this time, the lifting clamp 25 will be located between the symmetrical first transmission belts 34. Then, the steel to be galvanized is fixedly clamped on the lifting clamp 25. Then, the power is turned on, and the symmetrical first motor 32 is synchronously controlled by outputting the same source command through the PLC / PAC. The first motor 32 will drive the corresponding first transmission shaft 33 to rotate. When the first transmission shaft 33 rotates, it will drive the first transmission belt 34 on its wall to move along the outer wall of the symmetrical first transmission shaft 33. As the first transmission belt 34 rotates, the first transmission belt 34 will move along the outer wall of the symmetrical first transmission shaft 33. The transmission of 4 can drive the connecting rod 35 to move synchronously. The moving connecting rod 35 can drive the locking rod 21 to move towards the second transmission belt 44. The second connecting plate 41 will drive the second transmission shaft 43 to rotate. When the second transmission shaft 43 rotates, it will drive the second transmission belt 44 to transmit on the outer wall of the symmetrical second transmission shaft 43. The second transmission belt 44 will drive the hook 46 to transmit synchronously. When the symmetrical hook 46 is displaced to be flush with the top of the first transmission belt 34, it will stop moving. At this time, another set of symmetrical hooks 46 will be located in the opposite position on the other side. As the connecting rod 35 drives the locking rod 21 to move, when the connecting rod 35 is about to move downward, the locking rod 21 will be displaced to the hook 46 that is stopped on the side wall of the first transmission belt 34, and then move from the connecting rod 35 to the hook 46. As the hook 46 moves into the opening of the connecting hook 46, the second motor 42 will restart the second drive shaft 43 to rotate. The second drive shaft 43 drives the second drive belt 44 and the connecting hook 46, causing the steel suspended from the wall of the lifting clamp 25 to enter the molten zinc in the galvanizing tank 20. After galvanizing, the second drive shaft 43 will continue to drive the second drive belt 44. At this time, the clamp 21 will be pulled upwards by the connecting hook 46. The symmetrical third motor 52 achieves synchronous control through the same control method as the symmetrical first motor 32. When the connecting hook 46 moves the clamp 21 to be flush with the top of the third drive belt 54, the third motor 52 will drive the third drive shaft 53 to rotate. The third drive shaft 53 will then drive the third... The transmission belt 54 drives the transmission along its wall surface, while the guide block 55 and arc plate 56 on the lower wall of the third transmission belt 54 move toward the second frame 40. At this time, the inclined surface of the guide block 55 first contacts the bottom of the clamping rod 21. As the inclined surface of the guide block 55 gradually contacts the lower arc surface of the clamping rod 21, it will push the clamping rod 21 toward the opening of the hook 46. When the clamping rod 21 moves out of the opening of the hook 46, it will be located in the cavity of the arc plate 56. Simultaneously, the second transmission shaft 43 is controlled to rotate, so that the hook 46 continues to move upward, thereby separating the clamping rod 21 from the wall of the hook 46. At this time, the clamping rod 21 will be displaced onto the symmetrical third transmission belt 54. At this time, the galvanized steel can be removed from the wall of the clamping clamp 25.

[0037] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A continuous hot-dip galvanizing apparatus, characterized in that, include: The zinc plating storage tank (20) is rectangular and contains molten zinc. The relay structure is set above the galvanizing storage tank (20) for galvanizing steel materials inserted into the cavity of the galvanizing storage tank (20). The relay structure includes: a first frame (30), a first drive shaft (33), a first drive belt (34), a second frame (40), a second drive shaft (43), a second drive belt (44), and a connecting hook (46). The first frame (30) is fixedly connected to one side of the front wall of the galvanizing storage tank (20), and the first drive shaft (33) is set on the first frame. The first transmission belt (34) is sleeved on the wall of the first transmission shaft (33), the second frame (40) is symmetrically fixedly connected to the front and rear walls of the galvanized storage tank (20), the second transmission shaft (43) is set between the symmetrical second frames (40), the second transmission belt (44) is sleeved on the outer wall of the second transmission shaft (43), the hook (46) is fixedly connected to the outer wall of the second transmission belt (44), and the second transmission belt (44) is located directly above the galvanized storage tank (20).

2. The continuous hot-dip galvanizing apparatus according to claim 1, characterized in that, The first frame (30) is a herringbone frame. The first frame (30) is symmetrically arranged on one side of the galvanized storage tank (20). A gantry frame is installed on the top between the symmetrical first frames (30). The first drive shaft (33) is cylindrical.

3. The continuous hot-dip galvanizing apparatus according to claim 1, characterized in that, The second frame (40) is also a herringbone frame. The bottom of the symmetrical second frame (40) is connected by a rectangular rod. The second drive shaft (43) rotates symmetrically between the symmetrical second frames (40). The second drive belt (44) is sleeved on the outer wall of the symmetrical second drive shaft (43). The hook (46) is a J-shaped rod. The opening of the hook (46) gradually narrows. The same hook (46) is symmetrically arranged on the front and back of the outer wall of the second drive belt (44). Two sets of opposite hooks (46) are symmetrically arranged on the outer wall of the second drive belt (44).

4. The continuous hot-dip galvanizing apparatus according to claim 1, characterized in that, The relay structure also includes a first connecting plate (31), a first motor (32), and a connecting rod (35). The first connecting plate (31) is fixedly connected to the opposite walls of the symmetrical first frame (30). The first motor (32) is fixedly connected to the outer wall of the symmetrical first connecting plate (31). The first drive shaft (33) is symmetrically rotated and connected to the opposite walls of the symmetrical first connecting plate (31). A first drive belt (34) is sleeved on the outer wall of each symmetrical first drive shaft (33). The first motor (32) can drive the corresponding first drive shaft (33) to rotate. The connecting rod (35) is fixedly connected to the outer wall of each first drive belt (34). The connecting rod (35) is rectangular. The connecting rod (35) is evenly arranged on the outer wall of the first drive belt (34). Each set of front and rear symmetrical hooks (46) can pass through the outer wall of the symmetrical first drive shaft (33).

5. A continuous hot-dip galvanizing apparatus according to claim 4, characterized in that, The relay structure also includes a second connecting plate (41), a second motor (42), and a limiting edge (45). The second connecting plate (41) is fixedly connected to the wall of the symmetrical second frame (40) facing each other. The second motor (42) is fixedly connected to the outer wall of the front second connecting plate (41). The symmetrical second transmission shaft (43) is rotatably connected between the symmetrical second connecting plates (41). The second motor (42) can drive the upper second transmission shaft (43) to rotate. The limiting edge (45) is symmetrically fixedly connected in the cavity of the second transmission belt (44). The symmetrical limiting edge (45) will always fit against the end of the second transmission shaft (43).

6. A continuous hot-dip galvanizing apparatus according to claim 5, characterized in that, The relay structure also includes a third frame (50), a third connecting plate (51), a third motor (52), a third drive shaft (53), a third drive belt (54), a guide block (55), and an arc plate (56). The third frame (50) is symmetrically fixedly connected to the side wall of the galvanized storage tank (20) opposite to the first frame (30). The same gantry frame is also installed on the top of the symmetrical third frame (50). The third connecting plate (51) is fixedly connected to the wall of each third frame (50) between the symmetrical third frames (50). Above, the third motor (52) is fixedly connected to the outer wall of each third connecting plate (51), the third transmission shaft (53) is symmetrically rotated and connected to the wall of each third connecting plate (51), the third motor (52) can drive the corresponding third transmission shaft (53) to rotate, the third transmission belt (54) is sleeved on the outer wall of each group of left and right symmetrical third transmission shafts (53), the guide block (55) is symmetrically fixedly connected to the outer wall of each third transmission belt (54), and the arc plate (56) is fixedly connected to the end of each guide block (55).

7. A continuous hot-dip galvanizing apparatus according to claim 6, characterized in that, The spacing of the symmetrical third transmission belt (54) is the same as that of the symmetrical first transmission belt (34). The front and rear symmetrical hooks (46) can also pass through the outer wall of the symmetrical third transmission belt (54). The guide block (55) is a right-angled triangular block, and the arc plate (56) is an arc-shaped plate. The opening of the arc plate (56) and the inclined surface of the guide block (55) face the same direction.

8. A continuous hot-dip galvanizing apparatus according to claim 1, characterized in that, A lifting structure is connected between the symmetrical first transmission belts (34). The lifting structure includes a clamping rod (21), a limiting ring (22), an alignment block (23), a rotating sleeve (24), and a lifting clamp (25). The clamping rod (21) is clamped between adjacent connecting rods (35). The clamping rod (21) is cylindrical. The limiting ring (22) is symmetrically fixed to the wall surface of the clamping rod (21). The limiting ring (22) is annular. The alignment block (23) is symmetrically fixed to both ends of the clamping rod (21). The aligning block (23) is shaped like a frustum. The inclined surfaces of the symmetrical aligning blocks (23) face each other. The spacing between the symmetrical aligning blocks (23) is the same as the spacing between the outer walls of the symmetrical first transmission belt (34). The rotating sleeve (24) is fitted onto the wall of the clamp (21) at the symmetrical limiting ring (22). The outer wall of the symmetrical limiting ring (22) can fit with the spacing of the symmetrical first transmission belt (34). A sling is installed at the bottom of the rotating sleeve (24), and a lifting clamp (25) is fixedly connected to the bottom of the sling.

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