A large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a winch

Abstract

The utility model provides a kind of hoist quick hoisting boiler heating surface large tonnage lifting device, belong to boiler installation construction technical field.It solves the problem of poor stability and safety of existing boiler heating surface in hoisting process summary.It utilizes hoist quick hoisting boiler heating surface large tonnage lifting device, including several hoist components and several spreaders, each hoist component is configured at least one spreader, each hoist component includes reel and steel rope wound on reel, the outer end of each steel rope is fixedly connected with at least one spreader, the spreader can be assembled with boiler heating surface.The structure reduces the risk of aerial work, reduces construction difficulty, greatly saves labor cost, reduces the number of segmentation of large assembly overall hoisting, shortens construction period, ground welding environment is controllable, and weld quality is more easily guaranteed, reduces the hidden danger of later stage leakage, can hoist heavy, large size heating surface module, reduces the risk of aerial work.

Description

Technical Field

[0001] This utility model belongs to the field of boiler installation and construction technology, and in particular, it is a large-tonnage lifting device for quickly hoisting boiler heating surfaces using a winch. Background Technology

[0002] In the installation of modern boilers, the hoisting of boiler heating surfaces is a critical and challenging task. Boiler heating surfaces are typically large in size and heavy in weight, and traditional hoisting methods have many drawbacks. For example, some simple hoisting equipment cannot meet the needs of lifting large tonnages, and although large cranes can bear weight, their operational flexibility is greatly reduced in the limited space of the boiler room, and rental costs are high.

[0003] Currently, some lifting components operate slowly, failing to meet project schedule requirements. Furthermore, precise control of the lifting position and angle is difficult, resulting in significant time spent adjusting the boiler heating surfaces during installation and connection. In addition, the stability and safety of existing lifting components need improvement; any swaying or structural instability during the lifting of heavy objects could easily lead to serious safety accidents. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a large-tonnage lifting device for quickly hoisting boiler heating surfaces using a winch. The technical problem this invention aims to solve is: how to address the poor overall stability and safety of existing boiler heating surfaces during the hoisting process.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A lifting device for quickly hoisting large-tonnage boiler heating surfaces using a winch is characterized by comprising several winch assemblies and several lifting devices. Each winch assembly is equipped with at least one lifting device. Each winch assembly includes a drum and a steel rope wound on the drum. The outer end of each steel rope is fixedly connected to at least one lifting device, which can be assembled with the boiler heating surface.

[0007] When hoisting boiler heating surfaces, the lifting equipment is fixedly connected to the tube bank. The specific number and position of the lifting equipment can be set according to the size, shape, and weight of the tube bank, achieving stable hoisting of each boiler heating surface. This enables precise positioning and safe, efficient installation of the tube bank for the boiler heating surface. By using multiple winches in coordination with optimized lifting equipment, the tube bank and rigid beams can be combined on the ground over a large area, reducing the risks of working at heights, lowering construction difficulty, and greatly saving labor costs. The overall hoisting of large components reduces the number of segmentation steps, shortens the construction period, and allows for controllable welding environment on the ground, making it easier to ensure weld quality and reducing the risk of later leakage. Heavy and large-sized heating surface modules can be hoisted to meet the needs of large-capacity boilers. Most welding and assembly can be completed on the ground, reducing the risks of working at heights.

[0008] In the aforementioned lifting device for rapidly hoisting large-tonnage boiler heating surfaces using a winch, the lifting device includes a base plate with several oblique holes spaced along its length. Side plates are fixedly connected to both sides of the base plate, and a top plate is fixedly connected to the upper end of each side plate. The top plate has mounting holes, and a connecting plate passes through each oblique hole. The upper end of the connecting plate is above the base plate, and the lower end is below it. A first connecting hole is located at the upper end of the connecting plate, and a second connecting hole is located at the lower end. A steel rope passes through the mounting holes and is fixedly connected to the top plate. After the lower end of the connecting plate passes through the pipe bank, a locking pin passes through all second connecting holes, and another locking pin passes through all first connecting holes, thus assembling the lifting device with the pipe bank and connecting them together. The steel rope of the winch assembly is fixedly connected to the lifting device through the mounting holes. This structure increases the contact area between the lifting device and the pipe bank, enabling it to accommodate the hoisting of heating surfaces of different sizes, shapes, and weights.

[0009] In the aforementioned hoisting device for quickly lifting large-tonnage boiler heating surfaces using winches, all winch components are arranged in two rows.

[0010] In the above-mentioned lifting device for quickly hoisting the boiler heating surface using a winch, the lifting device includes a cylindrical lifting beam and several support plates. The upper end of all support plates is fixedly connected to the lifting beam, and the lower end of each support plate is fixedly connected to the boiler heating surface. The lifting device in this structure is used to lift the front and rear cold ash hopper assemblies of the water-cooled wall. However, the lifting device cannot support the weight of the cold ash hopper and may damage the cold ash hopper tubes. Usually, holes are drilled in the cold ash hopper tube screen, and the lifting point is changed to a rigid beam under the tube screen to achieve safety and stability. Although this can achieve equipment placement, a large number of tube screen cuts cause damage to a large number of water-cooled wall tubes, resulting in increased tube welding workload, increased construction costs, and potential risks of tube rupture on the boiler heating surface. The optimized lifting device only requires drilling holes in the tube screen fins, reducing welding workload and further ensuring boiler quality. During the lifting and installation of the rear water-cooled wall, the space of the flame deflector angle is restricted, requiring holes to be drilled in the flame deflector angle to pass through the locking device for lifting. However, the optimized lifting device avoids drilling holes in the flame deflector angle tube screen, greatly shortens the construction period, and improves equipment reliability.

[0011] In the aforementioned lifting device for rapidly hoisting large-tonnage boiler heating surfaces using a winch, the support plates are arranged in two rows in a figure-eight shape, with the two rows located on the left and right sides of the lifting beam. This structure further increases the number of connection points between the lifting device and the cold ash hopper assembly, thereby improving the stability of the connection between the lifting device and the cold ash hopper assembly.

[0012] In the aforementioned lifting device for rapidly hoisting large-tonnage boiler heating surfaces using a winch, the winch assembly includes a control module. This control module can monitor the winch's torque and wire rope tension in real time. Real-time monitoring of parameters such as the winch's torque and wire rope tension ensures a safe and stable lifting process.

[0013] In the aforementioned lifting device for rapidly hoisting large-tonnage boiler heating surfaces using a winch, the winch assembly includes an electromagnetic brake and a mechanical brake. The electromagnetic brake is used for rapid braking when the winch stops working, while the mechanical brake serves as a backup brake. The electromagnetic brake responds quickly when the winch stops, achieving rapid braking; the mechanical brake, as a backup braking device, can be manually activated in case of electromagnetic brake failure or emergency, ensuring the safety of the lifting process. Furthermore, the winch's rotational speed is adjusted in real-time by the control module based on parameters such as the lifting weight and lifting speed requirements, ensuring a smooth and efficient lifting process.

[0014] Compared with existing technologies, the large-tonnage lifting device for quickly hoisting boiler heating surfaces using winches of this utility model has the following advantages: When hoisting boiler heating surfaces, this structure fixes the lifting tools to the pipe bank. The specific number and position of the lifting tools can be set according to the size, shape, and weight of the pipe bank, achieving stable hoisting of each boiler heating surface, thereby achieving precise positioning and safe and efficient installation of the pipe bank for the boiler heating surface; by using multiple winches in coordination and an optimized lifting tool hoisting method, the pipe bank and rigid beam can be combined on the ground over a large area, reducing the risk of high-altitude operations, reducing construction difficulty, and greatly saving labor costs. The overall hoisting of large components reduces the number of segmentation steps, shortens the construction period, and allows for controllable ground welding environment, making it easier to ensure weld quality and reducing the risk of later leakage. It can hoist heavy and large-size heating surface modules to meet the needs of large-capacity boilers. Most of the welding and assembly can be completed on the ground, reducing the risk of high-altitude operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the winch assembly of this utility model.

[0017] Figure 3 This is one of the three-dimensional structural schematic diagrams of one type of lifting device of this utility model.

[0018] Figure 4 This is the second three-dimensional structural schematic diagram of one of the lifting devices of this utility model.

[0019] Figure 5 This is one of the partial three-dimensional structural schematic diagrams of one of the lifting devices of this utility model.

[0020] Figure 6 This is the second partial three-dimensional structural schematic diagram of one of the lifting devices of this utility model.

[0021] Figure 7 This is a three-dimensional structural diagram of another type of lifting device according to this utility model. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figures 1-5As shown, this large-tonnage lifting device for quickly hoisting boiler heating surfaces using winches includes several winch assemblies 1 and several lifting devices 2. All winch assemblies 1 are arranged in two rows. Each winch assembly 1 is equipped with at least one lifting device 2. Each winch assembly 1 includes a drum 3 and a steel rope 4 wound on the drum 3. The outer end of each steel rope 4 is fixedly connected to at least one lifting device 2. The lifting device 2 can be assembled with the boiler heating surface. The lifting device 2 includes a base plate 20, on which a number of inclined holes 21 are provided. All inclined holes 21 are spaced apart along the length of the base plate 20. Side plates 22 are fixedly connected to the left and right sides of the base plate 20. A top plate 23 is fixedly connected to the upper end of the side plates 22. The top plate 23 has mounting holes 230. A connecting plate 24 passes through each inclined hole 21. The upper end of the connecting plate 24 is located above the base plate 20, and the lower end is located below the base plate 20. A first connecting hole 240 is provided at the upper end of the connecting plate 24, and a second connecting hole 241 is provided at the lower end of the connecting plate 24. The steel rope 4 passes through the mounting hole 230 and is fixedly connected to the top plate 23.

[0024] When hoisting the boiler heating surface, after the lower end of the connecting plate 24 passes through the tube bank, the locking pin passes through all the second connecting holes 241, and another locking pin also passes through all the first connecting holes 240, realizing the assembly of the lifting device 2 with the tube bank, so that the lifting device 2 and the tube bank are connected together. The steel rope 4 of the winch assembly 2 is fixedly connected to the lifting device 2 through the mounting hole 230. The contact area between the lifting device 2 and the tube bank in this structure is increased, which can adapt to the hoisting of heating surfaces of different sizes, shapes and weights. The specific number of lifting devices and the position of the lifting device 2 can be set according to the size, shape and weight of the tube bank to realize the hoisting of heating surfaces of different boilers. Stable hoisting of the hot surface enables precise positioning and safe, efficient installation of the boiler's heating surface tube bank. Utilizing multiple winches and optimized hoisting equipment, the tube bank and rigid beams can be assembled over a large area on the ground, reducing the risks of working at heights, lowering construction difficulty, and significantly saving labor costs. The overall hoisting of large components reduces the number of segmentation steps, shortens the construction period, and allows for a controllable ground welding environment, making it easier to ensure weld quality and reducing potential leaks. Heavy-duty, large-size heating surface modules can be hoisted to meet the needs of large-capacity boilers. Most welding and assembly can be completed on the ground, reducing the risks of working at heights.

[0025] like Figure 7As shown, the lifting device 2 includes a cylindrical lifting beam 25 and several support plates 26. The steel rope 4 is fixedly connected to the lifting beam 25. The upper ends of all support plates 26 are fixedly connected to the lifting beam 25, and the lower ends of each support plate 26 are fixedly connected to the boiler heating surface. The support plates 26 are arranged in two rows in a figure-eight shape, and the two rows of support plates 26 are located on the left and right sides of the lifting beam 25. The lifting device 2 in this structure is used to lift the front and rear cold ash hopper assemblies of the water-cooled wall. However, lifting device 2 cannot support the weight of the cold ash hopper and may damage the cold ash hopper tubes. Usually, holes are drilled in the cold ash hopper tube screen, and the lifting point is changed to a rigid beam under the tube screen to achieve its safety and stability. Although this can achieve the equipment placement, a large number of tube screen cuts cause damage to a large number of water-cooled wall tubes, resulting in an increased workload of tube welding, increasing construction costs, and also creating a hidden danger of tube rupture on the boiler heating surface. The optimized lifting device 2 only requires drilling holes in the tube screen fins, reducing the amount of welding work and further ensuring the quality of the boiler. During the lifting and installation of the rear water-cooled wall, the space of the flame deflector angle is restricted, and it is necessary to drill holes in the flame deflector angle and pass through the locking device for lifting. However, by optimizing the lifting device, drilling holes in the flame deflector angle tube screen is avoided, which also greatly shortens the construction period and improves the reliability of the equipment.

[0026] The winch assembly 1 includes a control module that monitors the winch's torque and wire rope tension in real time. This real-time monitoring ensures a safe and stable lifting process. The winch assembly 1 features both an electromagnetic brake and a mechanical brake. The electromagnetic brake provides rapid braking when the winch stops, while the mechanical brake serves as a backup. The electromagnetic brake responds quickly to stop the winch, while the mechanical brake, as a backup, can be manually activated in case of electromagnetic brake failure or emergency situations, ensuring the safety of the lifting process. Furthermore, the winch's rotational speed is adjusted in real time by the control module based on parameters such as the lifting weight and required lifting speed, ensuring a smooth and efficient lifting process.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A hoisting device for rapidly lifting large-tonnage boiler heating surfaces using a winch, characterized in that, It includes several winch assemblies (1) and several lifting devices (2). Each winch assembly (1) is equipped with at least one lifting device (2). Each winch assembly (1) includes a drum (3) and a steel rope (4) wound on the drum (3). The outer end of each steel rope (4) is fixedly connected to at least one lifting device (2). The lifting device (2) can be assembled with the boiler heating surface.

2. The lifting device for rapidly hoisting large-tonnage boiler heating surfaces using a winch as described in claim 1, characterized in that, The lifting device (2) includes a base plate (20), on which a plurality of oblique holes (21) are provided. All oblique holes (21) are spaced apart along the length of the base plate (20). Side plates (22) are fixedly connected to the left and right sides of the base plate (20). A top plate (23) is fixedly connected to the upper end of the side plate (22). The top plate (23) has mounting holes (230). A connecting plate (24) is inserted into each oblique hole (21). The upper end of the connecting plate (24) is located above the base plate (20), and the lower end is located below the base plate (20). A first connecting hole (240) is provided at the upper end of the connecting plate (24), and a second connecting hole (241) is provided at the lower end of the connecting plate (24). The steel rope (4) passes through the mounting hole (230) and is fixedly connected to the top plate (23).

3. The lifting device for rapidly hoisting large-tonnage boiler heating surfaces using a winch according to claim 2, characterized in that, All winch components (1) are arranged in two rows.

4. The lifting device for rapidly hoisting large-tonnage boiler heating surfaces using a winch according to claim 1, characterized in that, The lifting device (2) includes a cylindrical lifting beam (25) and several support plates (26). The steel rope (4) is fixedly connected to the lifting beam (25). The upper ends of all the support plates (26) are fixedly connected to the lifting beam (25), and the lower ends of each support plate (26) are fixedly connected to the boiler heating surface.

5. A hoisting device for rapidly lifting large-tonnage boiler heating surfaces using a winch, as described in claim 4, is characterized in that... The support plate (26) is arranged in two rows, and the two rows of support plates (26) are arranged in a figure-eight shape, and the two rows of support plates (26) are located on the left and right sides of the hanging beam (25).

6. A hoisting device for rapidly lifting large-tonnage boiler heating surfaces using a winch, as described in claim 1, is characterized in that... The winch assembly (1) has a control module that can monitor the torque and wire rope tension of the winch in real time.

7. A large-tonnage lifting device for rapidly hoisting boiler heating surfaces using a winch, as described in claim 1, is characterized in that... The winch assembly (1) has an electromagnetic brake and a mechanical brake. The electromagnetic brake is used to achieve rapid braking when the winch stops working, and the mechanical brake is used for backup braking.

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