Large-tonnage hoisting device for rapidly hoisting heating surface of boiler by utilizing winch

Abstract

The invention provides a large-tonnage hoisting device for rapidly hoisting a boiler heating surface by utilizing a winch, and belongs to the technical field of boiler installation and construction. The problem that an existing boiler heating surface is poor in summarizing stability and safety in the hoisting process is solved. The large-tonnage hoisting device for rapidly hoisting the heating surface of the boiler through the winches comprises a plurality of winch assemblies and a plurality of hoisting tools, each winch assembly is provided with at least one hoisting tool and comprises a winding drum and a steel rope wound on the winding drum, the outer end of each steel rope is fixedly connected with at least one hoisting tool, and the hoisting tools are arranged on the winding drum. And the lifting appliance can be assembled with the heating surface of the boiler. According to the structure, the high-altitude operation risk is reduced, the construction difficulty is reduced, the labor cost is greatly saved, the segmentation frequency is reduced through large-assembly integral hoisting, the construction period is shortened, the ground welding environment is controllable, the welding seam quality is easier to guarantee, the later leakage hidden danger is reduced, heavy and large-size heating surface modules can be hoisted, and the high-altitude operation risk is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of boiler installation construction, in particular to a large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a winch. BACKGROUND

[0002] In the installation work of modern boilers, the hoisting of the boiler heating surface is a key and challenging task. The boiler heating surface is usually large in volume and heavy in weight, and the traditional hoisting method has many drawbacks. Commonly, some simple hoisting equipment cannot meet the hoisting requirements of large tonnage, and large cranes can bear the weight, but their operational flexibility is greatly reduced in the boiler room with limited space, and the rental cost is high.

[0003] Currently, some hoisting components have slow hoisting speed during operation, which cannot meet the engineering progress requirements. At the same time, it is difficult to accurately control the hoisting position and angle during hoisting, which leads to a large amount of time spent on position adjustment when the boiler heating surface is installed and connected. In addition, the stability and safety of the existing hoisting components need to be improved. Once the large-tonnage heavy object is hoisted and shakes or the structure is unstable, serious safety accidents are likely to occur. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned problems existing in the prior art, and to provide a large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a winch. The technical problem to be solved by the present application is how to solve the problem of poor stability and safety of the existing boiler heating surface during hoisting.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a winch, characterized in that it comprises a plurality of winch assemblies and a plurality of lifting devices, each winch assembly is provided with at least one lifting device, each winch assembly comprises a winding drum and a steel rope wound on the winding drum, and the outer end of each steel rope is fixedly connected with at least one lifting device, and the lifting device can be assembled with the boiler heating surface.

[0007] When hoisting the boiler heating surface, the lifting appliance is fixedly connected with the tube bank, the number and position of the lifting appliance can be set according to the size, shape and weight of the tube bank, the stable hoisting of each boiler heating surface is realized, and then the precise positioning and safe and efficient installation of the tube bank of the boiler heating surface are realized; the large-area combination of the tube bank and the rigid beam on the ground can be realized by using the optimized lifting appliance hoisting mode of multiple winches, the risk of high-altitude operation is reduced, the construction difficulty is reduced, the labor cost is greatly saved, the overall hoisting of the large assembly reduces the number of segmentation, the construction period is shortened, the welding environment on the ground is controllable, the welding quality is easier to guarantee, the leakage hidden danger in the later period is reduced, heavy and large-size heating surface modules can be hoisted, the demand of large-capacity boilers is met, most of the welding and combination can be completed on the ground, and the risk of high-altitude operation is reduced.

[0008] In the above-mentioned large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a winch, the lifting appliance comprises a bottom plate, a plurality of inclined holes are formed in the bottom plate, all the inclined holes are arranged at intervals along the length direction of the bottom plate, side plates are fixedly connected to the left and right sides of the bottom plate, a top plate is fixedly connected to the upper end of the side plate, the top plate has a mounting hole, a connecting plate is arranged in each inclined hole, the upper end of the connecting plate is located above the bottom plate, and the lower end of the connecting plate is located below the bottom plate, a connecting hole one is formed in the upper end of the connecting plate, a connecting hole two is formed in the lower end of the connecting plate, and the steel rope is fixedly connected with the top plate after passing through the mounting hole. After the lower end of the connecting plate passes through the tube bank, the lock pin passes through all the connecting holes two, and the other lock pin also passes through all the connecting holes one, the assembly of the lifting appliance and the tube bank is realized, the lifting appliance and the tube bank are connected together, and the steel rope of the winch assembly is fixedly connected with the lifting appliance through the mounting hole. The contact area of the lifting appliance and the tube bank is increased, and the lifting appliance can be adapted to hoist heating surfaces of different sizes, shapes and weights.

[0009] In the above-mentioned large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a winch, all the winch assemblies are arranged in two rows.

[0010] In the large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a hoist, the lifting appliance comprises a cylindrical lifting beam and a plurality of support plates, the upper ends of all the support plates are fixedly connected with the lifting beam, and the lower ends of each support plate are fixedly connected with the boiler heating surface. The lifting appliance of the structure is used for hoisting the front and rear ash hopper assemblies of the water cooling wall. The lifting appliance is difficult to bear the weight of the ash hopper and will also cause damage to the tube bank of the ash hopper. Generally, a hole is opened on the tube panel of the ash hopper, the lifting point is changed to a rigid beam under the tube panel, and the safety and stability are achieved. Although the equipment can be positioned, a large amount of tube panel cutting causes a large amount of damage to the water cooling wall tube, increases the welding workload of the tube bank, increases the construction cost, and also hides the hidden danger of boiler heating surface pipe burst. The optimized lifting appliance only needs to open a hole on the fin of the tube panel, reduces the welding workload, and further ensures the quality of the boiler. The rear water cooling wall is hoisted in the hoisting process and is restricted by the space of the flue bending angle. The hole is opened on the flue bending angle and the lifting appliance is hoisted. By optimizing the lifting appliance, the hole opening on the flue bending angle tube panel is avoided, the construction period is greatly shortened, and the reliability of the equipment is improved.

[0011] In the large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a hoist, the support plates are arranged in two rows, the two rows of support plates are arranged in an "eight" shape, and the two rows of support plates are located on the left and right sides of the lifting beam. This structure further increases the number of connection points of the lifting appliance and the ash hopper assembly, thereby improving the stability of the connection between the lifting appliance and the ash hopper assembly.

[0012] In the large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a hoist, the hoist assembly has a control module, which can monitor the torque of the hoist and the tension of the steel wire rope in real time. Real-time monitoring of the torque of the hoist, the tension of the steel wire rope and other parameters ensures the safety and stability of the hoisting process.

[0013] In the large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a hoist, the hoist assembly has an electromagnetic brake and a mechanical brake. The electromagnetic brake is used to achieve rapid braking when the hoist stops working, and the mechanical brake is used as a backup brake. The electromagnetic brake can quickly respond when the hoist stops working, achieving rapid braking. The mechanical brake serves as a backup braking device and can be manually activated in case of electromagnetic brake failure or emergency, ensuring the safety of the hoisting process. In addition, the speed of the hoist is adjusted in real time by the control module according to the hoisting weight, hoisting speed requirements and other parameters, ensuring the stability and efficiency of the hoisting process.

[0014] Compared with the prior art, the large-tonnage hoisting device for quickly hoisting the boiler heating surface by using the winch has the following advantages: when the boiler heating surface is hoisted, the lifting appliance is fixedly connected with the tube bank, the number and position of the lifting appliance can be set according to the size, shape and weight of the tube bank, stable hoisting of each boiler heating surface is realized, and then precise positioning and safe and efficient installation of the tube bank of the boiler heating surface are realized; the tube bank and the rigid beam can be combined on the ground in a large area by using the hoisting mode of the optimized lifting appliance cooperating with multiple winches, the risk of high-altitude operation is reduced, the construction difficulty is reduced, the labor cost is greatly saved, the whole hoisting of the large assembly reduces the number of segmentation, the construction period is shortened, the welding environment on the ground is controllable, the welding quality is more easily guaranteed, the leakage hidden danger in the later period is reduced, heavy and large-size heating surface modules can be hoisted, the demand of large-capacity boilers is met, most of the welding and combination can be completed on the ground, and the risk of high-altitude operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the present application.

[0016] Figure 2 is a three-dimensional structural schematic diagram of the winch assembly of the present application.

[0017] Figure 3 is one of the three-dimensional structural schematic diagrams of one of the lifting appliances of the present application.

[0018] Figure 4 is the second three-dimensional structural schematic diagram of one of the lifting appliances of the present application.

[0019] Figure 5 is one of the partial three-dimensional structural schematic diagrams of one of the lifting appliances of the present application.

[0020] Figure 6 is the second partial three-dimensional structural schematic diagram of one of the lifting appliances of the present application.

[0021] Figure 7 is a three-dimensional structural schematic diagram of another lifting appliance of the present application. DETAILED DESCRIPTION

[0022] The following is a further description of the technical solutions of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0023] As Figures 1-5As shown, the present application utilizes a hoist to quickly hoist the large-tonnage hoisting device of the boiler heating surface, which comprises a plurality of hoist assemblies 1 and a plurality of lifting devices 2. All hoist assemblies 1 are arranged in two rows, and each hoist assembly 1 is provided with at least one lifting device 2. Each hoist assembly 1 comprises a winding drum 3 and a steel rope 4 wound on the winding drum 3. The outer end of each steel rope 4 is fixedly connected with at least one lifting device 2, and the lifting device 2 can be assembled with the boiler heating surface. The lifting device 2 comprises a bottom plate 20, a plurality of inclined holes 21 are formed in the bottom plate 20, all the inclined holes 21 are arranged at intervals along the length direction of the bottom plate 20, and the left and right sides of the bottom plate 20 are fixedly connected with side plates 22. The upper end of the side plate 22 is fixedly connected with a top plate 23, and the top plate 23 has a mounting hole 230. A connecting plate 24 is arranged in each inclined hole 21, the upper end of the connecting plate 24 is located above the bottom plate 20, the lower end of the connecting plate 24 is located below the bottom plate 20, the upper end of the connecting plate 24 is provided with a connecting hole one 240, and the lower end of the connecting plate 24 is provided with a connecting hole two 241. The steel rope 4 is fixedly connected with the top plate 23 after passing through the mounting hole 230.

[0024] When hoisting the boiler heating surface, the lower end of the connecting plate 24 passes through the tube bank, the locking pin passes through all the connecting hole two 241, and the other locking pin also passes through all the connecting hole one 240, realizing the assembly of the lifting device 2 and the tube bank, so that the lifting device 2 is connected with the tube bank. The steel rope 4 of the hoist assembly 2 is fixedly connected with the lifting device 2 through the mounting hole 230. The contact area of the lifting device 2 of the present structure with the tube bank is increased, which can adapt to the hoisting of heating surfaces of different sizes, shapes and weights. The 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, realizing stable hoisting of each boiler heating surface, and then realizing accurate positioning and safe and efficient installation of the tube bank of the boiler heating surface; the hoisting method of the lifting device with multiple hoists and optimization can combine the tube bank and the rigid beam on the ground in a large area, reduce the risk of high-altitude operation, reduce the construction difficulty, greatly save the labor cost, reduce the number of segmented hoisting of large components, shorten the construction period, the ground welding environment is controllable, the welding quality is easier to guarantee, the leakage hidden danger in the later period is reduced, heavy and large-size heating surface modules can be hoisted, the demand of large-capacity boiler is met, most of the welding and combination can be completed on the ground, and the risk of high-altitude operation is reduced.

[0025] As Figure 7As shown, the lifting tool 2 comprises a cylindrical lifting beam 25 and a plurality of support plates 26, the steel rope 4 is fixedly connected with the lifting beam 25, the upper ends of all the support plates 26 are fixedly connected with the lifting beam 25, and the lower ends of each support plate 26 are fixedly connected with the boiler heating surface. The support plates 26 are arranged in two rows, the two rows of support plates 26 are arranged in an "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 tool 2 of the structure is used for lifting the front and rear ash hopper assemblies of the water cooling wall, and the lifting tool 2 is difficult to bear the weight of the ash hopper, and will also cause damage to the ash hopper tube row. Generally, holes are opened on the ash hopper tube panel, the lifting point is changed to a rigid beam under the tube panel, so as to achieve safety and stability; although the equipment can be positioned, a large amount of tube panel cutting causes a large amount of water cooling wall tube damage, which increases the welding workload of the tube row, increases the construction cost, and also hides the hidden danger of boiler heating surface pipe burst; the optimized lifting tool 2 only needs to open holes on the tube panel fins, which reduces the welding workload, and further ensures the quality of the boiler; the rear water cooling wall is hoisted during the hoisting process, and is restricted by the space of the flue bending angle. Holes are opened on the flue bending angle to pass through the lock tool for hoisting, and by optimizing the lifting tool, the opening of the flue bending angle tube panel is avoided, and the construction period is greatly shortened, and the reliability of the equipment is improved.

[0026] The winch assembly 1 has a control module capable of monitoring the torque of the winch and the tension of the steel wire rope in real time. The torque of the winch and the tension of the steel wire rope and other parameters are monitored in real time to ensure the safety and stability of the lifting process. 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 as a backup brake. The electromagnetic brake can quickly respond when the winch stops working, achieving rapid braking. The mechanical brake serves as a backup brake device and can be manually activated in case of electromagnetic brake failure or emergency, ensuring the safety of the lifting process. In addition, the speed of the winch is adjusted in real time by the control module according to the lifting weight, lifting speed requirements and other parameters to ensure smooth and efficient lifting.

[0027] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without departing from the spirit of the present application or exceeding the scope defined by the appended claims.

Claims

1. A large-tonnage hoisting device for quickly hoisting a boiler heating surface by a hoist, characterized in that, The application relates to a boiler heating surface assembling device, which comprises a plurality of hoist assemblies (1) and a plurality of hangers (2), each hoist assembly (1) is provided with at least one hanger (2), each hoist assembly (1) comprises a winding drum (3) and a steel rope (4) wound on the winding drum (3), and the outer end of each steel rope (4) is fixedly connected with at least one hanger (2), and the hanger (2) can be assembled with the boiler heating surface.

2. The large-tonnage hoisting device for quickly hoisting a boiler heating surface by using a hoist according to claim 1, characterized in that, The hanger (2) comprises a bottom plate (20), a plurality of inclined holes (21) are formed in the bottom plate (20), all the inclined holes (21) are arranged at intervals along the length direction of the bottom plate (20), left and right sides of the bottom plate (20) are fixedly connected with side plates (22), upper ends of the side plates (22) are fixedly connected with a top plate (23), the top plate (23) is provided with mounting holes (230), each inclined hole (21) is provided with a connecting plate (24), the upper end of the connecting plate (24) is located above the bottom plate (20), the lower end of the connecting plate (24) is located below the bottom plate (20), the upper end of the connecting plate (24) is provided with a connecting hole I (240), the lower end of the connecting plate (24) is provided with a connecting hole II (241), and the steel rope (4) is fixedly connected with the top plate (23) after passing through the mounting hole (230).

3. The large-tonnage hoisting device for quickly hoisting a boiler heating surface with a hoist according to claim 2, characterized in that, All the hoist assemblies (1) are arranged in two rows.

4. The large-tonnage hoisting device for quickly hoisting a boiler heating surface with a hoist according to claim 1, characterized in that, The hanger (2) comprises a cylindrical hanger beam (25) and a plurality of supporting plates (26), the steel rope (4) is fixedly connected with the hanger beam (25), upper ends of all the supporting plates (26) are fixedly connected with the hanger beam (25), and lower ends of each supporting plate (26) are fixedly connected with the boiler heating surface.

5. The large-tonnage hoisting device for quickly hoisting a boiler heating surface with a hoist according to claim 4, characterized in that, The supporting plates (26) are arranged in two rows, the two rows of supporting plates (26) are arranged in an "eight" shape, and the two rows of supporting plates (26) are located on the left and right sides of the hanger beam (25).

6. The large-tonnage hoisting device for quickly hoisting a boiler heating surface with a hoist according to claim 1, characterized in that, The hoist assembly (1) is provided with a control module, the control module can monitor the torque and the tension of the steel wire rope in real time when the hoist works.

7. The large-tonnage hoisting device for quickly hoisting a boiler heating surface with a hoist according to claim 1, characterized in that, The hoist assembly (1) is provided with an electromagnetic brake and a mechanical brake, the electromagnetic brake is used for rapid braking when the hoist stops working, and the mechanical brake is used for standby braking.

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