A device for installing seamless wrapping cloth on a hot-dip galvanizing cooling tower top roller

Abstract

A kind of device for installing seamless wrapping of hot-dip galvanizing cooling tower top roller belongs to the technical field of hot-dip galvanizing cooling tower maintenance equipment, for installing the seamless wrapping of hot-dip galvanizing cooling tower top roller.The technical scheme is that the upper end of two top roller support frames is rotatably supported with the roller shaft of the top roller, one end of the connecting shaft is connected with one end of the roller shaft of the top roller, the wrapping frame is installed on the connecting shaft, the wrapping sleeve and the seamless wrapping are respectively sleeved on the wrapping frame, the wrapping sleeve is connected with one end of the seamless wrapping, the installation frame is opposite to the top roller at the other end of the top roller, the fixed lifting hook and the moving lifting hook of the hand-operated hoist are respectively connected with the installation frame and the wrapping sleeve.The present application has simple structure and is convenient to use, can replace and install the seamless wrapping of the top roller during maintenance, is convenient to operate, reduces installation time, improves work efficiency, greatly improves the installation quality of the seamless wrapping, and improves safety.

Description

Technical Field

[0001] This utility model relates to a device for installing seamless cloth wrapping on the top roller of a hot-dip galvanized cooling tower, belonging to the technical field of hot-dip galvanized cooling tower maintenance equipment. Background Technology

[0002] After being galvanized in the zinc bath, the steel strip in the galvanizing line quickly reaches the top of the cooling tower and begins cooling on the guide rollers. Because the temperature of the zinc layer on the strip surface is higher than the surface temperature of the rollers at this point, and the temperature difference is significant, the coating on the roller surface can be damaged or even peel off under the high-temperature impact. This results in pits on the roller surface, which can then be replicated on the strip surface, forming white spot defects. Therefore, to avoid this, the entire roller surface of the top roller is currently covered with a fabric to prevent these issues. The fabric is made of a high-temperature resistant, special flexible cloth material with excellent thermal stability, reducing the temperature difference between the strip and the fabric and improving the quality of the hot-dip galvanized steel strip.

[0003] Since the fabric covering is a consumable spare part, it needs to be replaced periodically during production line maintenance. Currently, there are two methods for replacing the fabric covering. One method uses a rectangular fabric covering. When replacing it, first use an overhead crane and a hand chain hoist to separate the strip steel from the roller, then remove the old fabric covering, wrap the new fabric covering the roller, and finally sew the joint with special glue. The other method uses a tubular seamless fabric covering. The installation method involves using an overhead crane, a forklift, and a hand chain hoist to install the fabric covering. First, use the overhead crane to lift the roller by one end and the middle position. Then, slip the fabric covering halfway through the unlifted end. Next, use the forklift to lift one end of the roller, then untie the lifting strap in the middle of the roller, and finally slip the entire fabric covering onto the roller.

[0004] These two methods have obvious shortcomings: While the first method is convenient for replacement, it results in uneven joints. In this case, the galvanized layer on the steel strip has not cooled, which will affect the galvanizing quality of the steel strip. The second method involves the roller being suspended throughout the process, which poses safety risks and can easily cause the fabric to become stained with oil during replacement, thus affecting the quality of the galvanized layer.

[0005] Therefore, necessary improvements are needed to the installation of cloth wrapping on the top rollers of existing hot-dip galvanized cooling towers. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a device for installing seamless cloth wrapping on the top roller of a hot-dip galvanized cooling tower. This device can be used for the installation and replacement of seamless cloth wrapping on the top roller during maintenance. It has a simple structure and is easy to operate. It not only greatly improves the installation quality of the cloth wrapping, but also improves safety.

[0007] The technical solution to the above technical problem is: A device for installing seamless fabric covering on the top roller of a hot-dip galvanized cooling tower includes a top roller support frame, a connecting shaft, a fabric covering frame, a fabric covering ring, an installation frame, and a hand-operated hoist. Two top roller support frames are placed below the top roller, with their upper ends providing rotatable support to both ends of the roller shaft. One end of the connecting shaft is connected to one end of the roller shaft. The fabric covering frame is mounted on the connecting shaft. The fabric covering ring and seamless fabric covering are respectively fitted onto the fabric covering frame, with the fabric covering ring connected to one end of the seamless fabric covering. The installation frame is located at the other end of the top roller, opposite to it. The fixed hook and movable hook of the hand-operated hoist are connected to the installation frame and the fabric covering ring, respectively.

[0008] The aforementioned device for seamlessly covering the top roller of a hot-dip galvanized cooling tower comprises a top roller support frame consisting of a base plate, a support frame, a bearing seat, and a rotating bearing. The base plate is rectangular, and the support frame consists of multiple triangular frames with their planes facing each other and arranged in parallel, welded to the base plate. The bearing seat is welded to the upper end of the support frame, and two rotating bearings are installed parallel to each other at both ends of the bearing seat. The two ends of the top roller shaft are respectively placed between the top surfaces of the two rotating bearings of the two top roller support frames.

[0009] The aforementioned device for seamlessly covering the top roller of a hot-dip galvanized cooling tower has a sleeve at one end of the connecting shaft. The inner diameter of the sleeve matches the diameter of the top roller's shaft. The sleeve of the connecting shaft is fitted onto the top roller's shaft at one end. Both ends of the connecting shaft have lifting rings, and the crane hook is connected to the lifting rings of the connecting shaft.

[0010] The aforementioned device for seamlessly covering the top roller of a hot-dip galvanized cooling tower comprises a covering frame consisting of multiple horizontal rods and multiple semi-circular frames forming a semi-cylindrical frame. The multiple horizontal rods are sequentially and parallelly fixed to both sides of the connecting shaft. The two ends of the multiple semi-circular frames are connected to the two ends of the multiple horizontal rods. The connecting shaft is located on the central axis of the bottom surface of the semi-cylindrical frame of the covering frame. The radius of the semi-cylindrical frame is larger than the radius of the top roller. The seamless covering is fitted onto the outside of the covering frame.

[0011] The aforementioned device for installing the seamless cloth covering the top roller of a hot-dip galvanized cooling tower has fastening buckles at both ends of the seamless cloth covering. Multiple fastening buckles are fixed to the seamless cloth covering along the edges of both ends of the seamless cloth covering. The cloth covering loop is connected to multiple fastening buckles at one end of the seamless cloth covering by pulling a steel wire rope.

[0012] The aforementioned device for seamlessly covering the top roller of a hot-dip galvanized cooling tower comprises an installation frame consisting of a base frame, columns, crossbeams, diagonal support rods, and tie plates. The base frame is an I-shaped frame placed on the ground. Two columns are vertically fixed at the center of both ends of the base frame. The two ends of the crossbeam are fixedly connected to the upper ends of the two columns. Diagonal support rods are connected to the top of the base frame on both sides of the two columns. Tie plates are welded to the upper and lower ends of both sides of the column. The front end of the tie plate extends out of the column, and there is a round hole at the front of the tie plate. The fixed hook of the manual hoist is connected to the round hole of the tie plate.

[0013] The beneficial effects of this utility model are: The tower top roller support frame of this utility model can support both ends of the tower top roller shaft. The upper end of the tower top roller support frame has a rotating bearing to support the roller shaft, so that the roller shaft will not be damaged when the tower top roller rotates. The sleeve at one end of the connecting shaft can be fitted onto one end of the tower top roller shaft, so that the connecting shaft is connected to the roller shaft of the tower top roller. The connecting shaft supports the fabric covering frame. The radius of the fabric covering frame matches the outer diameter of the tower top roller. The seamless fabric covering is fitted onto the outside of the fabric covering frame. The fabric covering frame can open the seamless fabric covering, making it easy to fit onto the tower top roller. The fabric covering ring is fitted onto the fabric covering frame and is fastened to one end of the seamless fabric covering. The seamless fabric covering can be moved as a whole by pulling the fabric covering ring. The mounting frame is located at the other end of the tower top roller. The fixed hook and the movable hook of the hand chain hoist are respectively connected to the round hole of the pull plate on the mounting frame and the fabric covering ring. Pulling the hand chain hoist can move the seamless fabric covering and fit the seamless fabric covering onto the outside of the tower top roller.

[0014] This utility model has a simple structure and is easy to use. It can replace and install the seamless wrapping cloth on the tower top roller during maintenance. The operation process is convenient, reduces installation time, improves work efficiency, greatly improves the installation quality of the seamless wrapping cloth, and also improves safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the tower top roller support frame; Figure 3 yes Figure 2 Side view; Figure 4 yes Figure 2 Top view; Figure 5 This is a front view of the connecting shaft and the fabric support frame; Figure 6 yes Figure 5 Side view; Figure 7 yes Figure 5 Top view; Figure 8This is a front view of the mounting frame; Figure 9 yes Figure 8 Side view; Figure 10 yes Figure 8 Top view; Figure 11 This is a schematic diagram of the connection between the connecting shaft and the roller at the top of the tower; Figure 12 This is a schematic diagram of a set including a fabric-covering ring, seamless fabric covering, and a fabric-covering frame; Figure 13 This is a schematic diagram of the fabric wrapping installation on the tower top roller.

[0016] The markings in the diagram are as follows: 1. Tower top roller; 2. Tower top roller support frame; 3. Connecting shaft; 4. Fabric wrapping frame; 5. Fabric wrapping ring; 6. Installation frame; 7. Seamless fabric wrapping; 8. Base plate; 9. Support frame; 10. Bearing seat; 11. Rotary bearing; 12. Sleeve; 13. Lifting ring; 14. Horizontal bar; 15. Semi-circular frame; 16. Fastening buckle; 17. Base frame; 18. Column; 19. Horizontal beam; 20. Diagonal support rod; 21. Pull plate; 22. Round hole; 23. Hand chain hoist; 24. Overhead crane hook; 25. Lifting wire rope; 26. Pulling wire rope. Detailed Implementation

[0017] This utility model consists of a tower top roller support frame 2, a connecting shaft 3, a cloth wrapping frame 4, a cloth wrapping ring 5, and an installation frame 6.

[0018] Figure 1 , 2 As shown in Figures 3 and 4, during the process of changing the covering cloth, the two tower top roller support frames 2 support the roller shaft of the tower top roller 1 and the connecting shaft 3 at both ends of the tower top roller 1 and one end of the connecting shaft 3, respectively.

[0019] The tower top roller support frame 2 consists of a base plate 8, a support frame 9, a bearing seat 10, and a rotating bearing 11. The base plate 8 is a rectangular plate. The support frame 9 is composed of multiple triangular frames, with their planes facing each other and arranged in parallel, welded to the base plate 8. The bearing seat 10 is welded to the upper end of the support frame 9. Two rotating bearings 11 are installed parallel to each other at both ends of the bearing seat 10. The two ends of the tower top roller 1's shaft are respectively placed between the top surfaces of the two rotating bearings 11 of the two tower top roller support frames 2. The rotating bearings 11 support the shaft of the tower top roller 1, preventing damage to the shaft during rotation.

[0020] Figure 1 , 5 As shown in Figures 6 and 7, one end of the connecting shaft 3 is connected to one end of the roller shaft of the tower top roller 1. The connecting structure is that one end of the connecting shaft 3 has a sleeve 12, the inner diameter of the sleeve 12 matches the roller shaft diameter of the tower top roller 1, the sleeve 12 of the connecting shaft 3 is fitted and connected to the roller shaft at one end of the tower top roller 1, and there are lifting rings 13 at both ends of the shaft body of the connecting shaft 3 for hoisting.

[0021] Figure 1 , 5 As shown in Figures 6 and 7, the fabric wrapping frame 4 is installed on the connecting shaft 3. The fabric wrapping frame 4 consists of a semi-cylindrical frame composed of multiple horizontal rods 14 and multiple semi-circular frames 15. The multiple horizontal rods 14 are sequentially and parallelly fixed to both sides of the shaft of the connecting shaft 3. The two ends of the multiple semi-circular frames 15 are respectively connected to the two ends of the multiple horizontal rods 14. The connecting shaft 3 is located on the central axis of the bottom surface of the semi-cylindrical frame of the fabric wrapping frame 4. The radius of the semi-cylindrical frame is larger than the radius of the tower top roller 1. The seamless fabric 7 is fitted onto the outside of the fabric wrapping frame 4.

[0022] Figure 12 , 13 As shown, the fabric loop 5 and the seamless fabric 7 are respectively fitted onto the fabric frame 4, with the fabric loop 5 connected to one end of the seamless fabric 7. The seamless fabric 7 has fastening buckles 16 at both ends, and multiple fastening buckles 16 are fixed to the seamless fabric 7 along its edges. The fabric loop 5 is connected to the multiple fastening buckles 16 at one end of the seamless fabric 7 by pulling the steel wire rope 26.

[0023] Figure 1 , 8 As shown in Figures 9 and 10, the mounting frame 6 is located opposite the top roller 1 at the other end. The mounting frame 6 consists of a base frame 17, columns 18, crossbeams 19, diagonal support rods 20, and tie plates 21. The base frame 17 is an I-shaped frame, placed on the ground. Two columns 18 are vertically fixed at the center of both ends of the base frame 17. The two ends of the crossbeam 19 are fixedly connected to the upper ends of the two columns 18 respectively. Diagonal support rods 20 are connected to the top of the base frame 17 on both sides of the two columns 18. Tie plates 21 are welded to the upper and lower ends of both sides of the column 18. The front end of the tie plate 21 extends out of the column 18. The front part of the tie plate 21 has a round hole 22, and the fixed hook of the manual hoist 23 is connected to the round hole 22 of the tie plate 21.

[0024] The process of replacing the covering cloth 7 using this utility model is as follows: Figure 11 The display shows that the mounting frame 6 and the two tower top roller support frames 2 are arranged in a straight line. The two ends of the roller shaft of the tower top roller 1 are placed on the upper end of the rotating bearing 11 of the two tower top roller support frames 2 respectively. The distance between the mounting frame 6 and the tower top roller support frame 2 is within the maximum stroke range of the moving end hook of the hand chain hoist 23. After placing the tower top roller 1 on the upper end of the two tower top roller support frames 2, use the crane hook 24 to lift the connecting shaft 3 and connect the sleeve 12 of the connecting shaft 3 to one end of the tower top roller 1. Figure 12The diagram shows that after connecting the sleeve of the connecting shaft 3 to the roller shaft of the tower top roller 1, the crane hook 24 is released. At this time, the connecting shaft 3 is suspended in the air. The fabric wrapping ring 5 and the seamless fabric wrapping 7 are then put into the connecting shaft 3 in sequence. The tail end of the connecting shaft 3 is lifted by the crane hook 24, which also slightly lifts the operating side of the tower top roller 1. Then, the tower top roller support frame 2 near one end of the connecting shaft 3 is moved and placed at the tail end of the connecting shaft 3. The crane hook 24 is released so that the tower top roller support frame 2 supports the tail end of the connecting shaft 3. Figure 13 The diagram shows that the fixed end hooks of the four chain hoists 23 are connected to the round holes 2 of the pull plate 21 of the mounting frame 6, and the moving end hooks of the chain hoists 23 are connected to the cloth wrapping rings 5. The cloth wrapping rings 5 ​​are connected to the fastening buckles 16 of the seamless cloth wrapping 7 by pulling the wire rope 26. Then, the four chain hoists 23 are pulled slowly at the same time, so that the cloth wrapping rings 5 ​​are kept perpendicular to the center of the roller shaft of the tower top roller 1 and slowly move towards the mounting frame 6. Finally, the seamless cloth wrapping 7 completely wraps the tower top roller 1 and exposes the fastening buckles 16 at both ends. Finally, the fastening buckles 6 are fastened symmetrically with the wire rope.

[0025] An embodiment of this utility model is as follows: The length of the base plate 8 of the tower top roller support frame 2 is 710mm and the width is 600mm. The length of the support frame 9 is 710mm, the width is 300mm and the height is 400mm. The length of the bearing seat 10 is 710mm, the width is 130mm and the height is 350mm. The model of the rotating bearing 11 is NU328M. The diameter of the connecting shaft 3 is 265mm and the length is 2540mm. The inner diameter of the sleeve 12 is 170mm and the length is 265mm. The horizontal bar 14 of the fabric frame 4 has a diameter of 20mm and a length of 2500mm, and the radius of the semi-circular frame 15 is 752.5mm. The diameter of the fabric loop 5 is 1560mm; The base frame 17 of the mounting frame 6 has a length of 1610mm and a width of 800mm. The column 18 has a length of 100mm, a width of 96mm, and a height of 1510mm. The crossbeam 19 has a length of 1410mm, a width of 96mm, and a height of 100mm. The diagonal support rod 20 has a length of 865.8mm and a width of 100mm. The tie plate 21 has a length of 150mm and a width of 90mm. The diameter of the round hole 22 is 50mm.

Claims

1. A device for installing a seamless cloth-wrapped top roller of a hot-dip galvanized cooling tower, characterized in that: It includes a tower top roller support frame (2), a connecting shaft (3), a cloth wrapping frame (4), a cloth wrapping ring (5), an installation frame (6), and a hand-operated hoist (23). There are two tower top roller support frames (2), which are placed below the tower top roller (1). The upper ends of the two tower top roller support frames (2) are rotated to the two ends of the roller shaft of the tower top roller (1). One end of the connecting shaft (3) is connected to one end of the roller shaft of the tower top roller (1). The cloth wrapping frame (4) is welded and installed on the connecting shaft (3). The cloth wrapping ring (5) and the seamless cloth wrapping (7) are respectively fitted on the cloth wrapping frame (4). The cloth wrapping ring (5) is connected to one end of the seamless cloth wrapping (7). The installation frame (6) is opposite to the tower top roller (1) at the other end. The fixed hook and the movable hook of the hand-operated hoist (23) are respectively connected to the installation frame (6) and the cloth wrapping ring (5).

2. The device for installing the seamless cloth-wrapped top roller of a hot-dip galvanized cooling tower according to claim 1, characterized in that: The tower top roller support frame (2) consists of a base plate (8), a support frame (9), a bearing seat (10), and a rotating bearing (11). The base plate (8) is a rectangular plate. The support frame (9) consists of multiple triangular frames with their planes facing each other and arranged in parallel, welded to the base plate (8). The bearing seat (10) is welded to the upper end of the support frame (9). Two rotating bearings (11) are installed in parallel at both ends of the bearing seat (10). The two ends of the roller shaft of the tower top roller (1) are respectively placed between the top surfaces of the two rotating bearings (11) of the two tower top roller support frames (2).

3. The device for installing the seamless cloth-wrapped top roller of a hot-dip galvanized cooling tower according to claim 1, characterized in that: One end of the connecting shaft (3) has a sleeve (12), the inner diameter of the sleeve (12) matches the diameter of the roller shaft of the tower top roller (1) and is clearance-fitted, the sleeve (12) of the connecting shaft (3) is fitted and connected to the roller shaft at one end of the tower top roller (1), and there are lifting rings (13) at both ends of the shaft of the connecting shaft (3), and the crane hook (24) is connected to the lifting rings (13) of the connecting shaft (3).

4. The device for installing the seamless cloth-wrapped top roller of a hot-dip galvanized cooling tower according to claim 1, characterized in that: The fabric wrapping frame (4) consists of a semi-cylindrical frame composed of multiple horizontal rods (14) and multiple semi-circular frames (15). The multiple horizontal rods (14) are sequentially and parallelly fixed to both sides of the shaft of the connecting shaft (3). The two ends of the multiple semi-circular frames (15) are respectively connected to the two ends of the multiple horizontal rods (14). The connecting shaft (3) is located on the center axis of the bottom surface of the semi-cylindrical frame of the fabric wrapping frame (4). The radius of the semi-cylindrical frame (15) is larger than the radius of the tower top roller (1). The seamless fabric (7) is fitted on the outside of the fabric wrapping frame (4).

5. The device for installing the seamless cloth-wrapped top roller of a hot-dip galvanized cooling tower according to claim 1, characterized in that: The seamless fabric (7) has fastening buckles (16) at both ends. Multiple fastening buckles (16) are fixed to the seamless fabric (7) along the edges of both ends. The fabric loop (5) is connected to multiple fastening buckles (16) at one end of the seamless fabric (7) by pulling the steel wire rope (26).

6. The device for installing the seamless cloth-wrapped top roller of a hot-dip galvanized cooling tower according to claim 1, characterized in that: The installation frame (6) consists of a base frame (17), columns (18), crossbeams (19), diagonal support rods (20), and pull plates (21). The base frame (17) is an I-shaped frame. The base frame (17) is placed on the ground. Two columns (18) are vertically fixed at the center of both ends of the base frame (17). The two ends of the crossbeam (19) are fixedly connected to the upper ends of the two columns (18). The two sides of the two columns (18) are respectively connected to the top of the base frame (17) by diagonal support rods (20). Pull plates (21) are welded to the upper and lower ends of the columns (18). The front end of the pull plate (21) extends out of the column (18). The front part of the pull plate (21) has a round hole (22). The fixed hook of the manual hoist (23) is connected to the round hole (22) of the pull plate (21).

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