A hoist for maintenance of a desulfurization booster fan of a power plant

Abstract

A kind of power plant desulfurization booster fan overhaul hoist, including: hoist body, the lower end of the hoist body is connected with connecting end, and the lower end of connecting end is hinged with left one connecting rod and right one connecting rod, the lower end of the left one connecting rod is hinged with left two connecting rods, and the lower end of left two connecting rods is welded with horizontal left three connecting rods, and the inner side end of left three connecting rods is hinged with left hinged rod, the inner side end of the left hinged rod is hinged with left hook rod, and left hook rod is matched with left through hole of left two connecting rods body and is hung, the lower end of the right one connecting rod is welded with right two connecting rods, and the lower end of right two connecting rods is welded with right three connecting rods.The utility model is used for the electric hoist of power plant booster fan overhaul.

Description

Technical Field

[0001] This utility model relates to the field of hoist technology, specifically to a hoist for the maintenance of a power plant desulfurization booster fan. Background Technology

[0002] When the desulfurization booster fan in the power plant is being overhauled, two manual hoists are needed to lift the upper part of the fan rotor housing because there is no electric hoist for backing up. When lifting the fan rotor, manual hoists must be used in conjunction with the lifting or the fan can be lifted directly by a crane.

[0003] However, existing manual hoists typically have one hook at the top and one at the bottom, connected by a chain. The upper hook serves as the fixed end, while the lower hook is attached to the object being lifted. However, when the motor rotor is pulled out, a single hook can only be attached to one end of the rotor, thus failing to form a stable connection. This leads to rotor instability during lifting. Using two manual hoists requires more manual labor to achieve stable lifting, which is cumbersome, time-consuming, and labor-intensive. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a maintenance hoist for power plant desulfurization booster fans is provided to solve the problems that existing manual hoists cannot stably lift the rotor when using one, and that it is time-consuming and labor-intensive when using two to lift the rotor.

[0005] To achieve the above objectives, a hoist for maintaining a desulfurization booster fan in a power plant is provided, comprising: a hoist body, a connecting end connected to the lower end of the hoist body, and a left first connecting rod and a right first connecting rod hinged to the lower end of the connecting end; a left second connecting rod hinged to the lower end of the left first connecting rod, and a horizontal left third connecting rod welded to the lower end of the left second connecting rod; a left hinge rod hinged to the inner end of the left third connecting rod, and a left hook rod hinged to the inner end of the left hinge rod, which is matched and engaged with a left through hole opened in the body of the left second connecting rod; a right second connecting rod welded to the lower end of the right first connecting rod, and a right third connecting rod welded to the lower end of the right second connecting rod, and a right hinge rod hinged to the inner end of the right third connecting rod, which is hinged to a right hook rod, which is matched and engaged with a right through hole opened in the body of the right second connecting rod.

[0006] Furthermore, the upper end of the gourd body is provided with a hook, and the lower end of the gourd body is connected to a chain, with the lower end of the chain fixedly connected to the connecting end.

[0007] Furthermore, the left first link and the left second link are of the same length as the right first link and the right second link, respectively, and the left first link and the right first link are connected by springs.

[0008] Furthermore, hooks are provided on the inner ends of both the left and right hook rods, and the hooks are rotatably connected to the ends of the rods of the left and right hook rods.

[0009] Furthermore, each of the left and right through holes has three equidistant holes with the same inner diameter, and the left and right through holes are respectively located in the lower half of the left and right connecting rods.

[0010] Furthermore, the left three-link and the right three-link are respectively inserted into the inner side of the rotor from both ends of the fan rotor, and the left hook rod and the right hook rod are inserted into the gap in the rotor housing. Beneficial effects

[0011] 1. The left first link, left second link, right first link, and right second link facilitate adjustment of the spacing between the left and right hook links, making it suitable for different sizes of wind turbine outer rotor housings. The left third link, left hinge rod, left hook rod, and right third link, right hinge rod, and right hook rod facilitate stable attachment to both ends of the wind turbine outer rotor, forming a balanced and stable hoisting structure. This allows for easy disassembly and removal or installation of the wind turbine outer rotor during maintenance, reducing equipment downtime and labor costs, and achieving time and labor savings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a state structure according to an embodiment of the present utility model.

[0013] Figure 2 This is a schematic diagram of another state structure of an embodiment of the present utility model.

[0014] Figure 3 Figure 1 shows a schematic diagram of the structure at point A in an embodiment of this utility model.

[0015] Figure 4 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the structure at point B.

[0016] In the diagram: 1. Hoist body; 2. Connecting end; 3. Left first connecting rod; 4. Left second connecting rod; 5. Right first connecting rod; 6. Right second connecting rod; 7. Spring; 8. Left through hole; 9. Left third connecting rod; 10. Left hinge rod; 11. Left hook rod; 12. Right through hole; 13. Right third connecting rod; 14. Right hinge rod; 15. Right hook rod. Detailed Implementation

[0017] Reference Figures 1 to 4 As shown, this utility model provides a maintenance hoist for a power plant desulfurization booster fan, including: a hoist body 1, a connecting end 2, a left connecting rod 3, and a right connecting rod 5.

[0018] Specifically, the lower end of the gourd body 1 is connected to a connecting end 2, and the lower end of the connecting end 2 is hinged to a left first connecting rod 3 and a right first connecting rod 5. The lower end of the left first connecting rod 3 is hinged to a left second connecting rod 4, and the lower end of the left second connecting rod 4 is welded to a horizontal left third connecting rod 9. The inner end of the left third connecting rod 9 is hinged to a left hinge rod 10, and the inner end of the left hinge rod 10 is hinged to a left hook rod 11. The left hook rod 11 is matched and hooked with the left through hole 8 opened in the body of the left second connecting rod 4. The lower end of the right first connecting rod 5 is welded to a right second connecting rod 6, and the lower end of the right second connecting rod 6 is welded to a right third connecting rod 13. The inner end of the right third connecting rod 13 is hinged to a right hinge rod 14, and the inner end of the right hinge rod 14 is hinged to a right hook rod 15. The right hook rod 15 is matched and hooked with the right through hole 12 opened in the body of the right second connecting rod 6.

[0019] As a preferred implementation, the left first link 3 and the left second link 4 are hinged, and the right first link 5 and the right second link 6 are hinged, which facilitates the adjustment of the hanging width and thus adapts to different outer rotor sizes.

[0020] The upper end of the gourd body 1 is provided with a hook, and the lower end of the gourd body 1 is connected to a chain, and the lower end of the chain is fixedly connected to the connecting end 2.

[0021] As a preferred implementation method, the internal structure of the hoist body 1 facilitates the lifting and lowering movement of the connecting end 2.

[0022] The left first link 3 and the left second link 4 are of the same length as the right first link 5 and the right second link 6, respectively, and the left first link 3 and the right first link 5 are connected by a spring 7.

[0023] As a preferred implementation, the spring 7 facilitates the inward pulling force of the hook rods at both ends after being engaged with the rotor, thereby making the engagement more stable.

[0024] Hooks are provided on the inner ends of both the left hook rod 11 and the right hook rod 15, and the hooks are rotatably connected to the ends of the rods of the left hook rod 11 and the right hook rod 15.

[0025] As a preferred implementation, the hook is rotatably connected to the rod, which facilitates the adjustment of the hook's hanging angle and direction, thereby making it easy to quickly hook onto the through hole.

[0026] The left through hole 8 and the right through hole 12 each have three equidistant holes with the same inner diameter, and the left through hole 8 and the right through hole 12 are respectively located in the lower half of the rod body of the left connecting rod 4 and the right connecting rod 6.

[0027] As a preferred implementation, by setting through holes at different positions, the length of the attachment can be easily adjusted, thus making it suitable for different sizes of the outer rotor's housing.

[0028] The left three-link rod 9 and the right three-link rod 13 are inserted into the inside of the rotor from both ends of the fan rotor, and the left hook rod 11 and the right hook rod 15 are inserted into the gap in the rotor housing.

[0029] As a preferred implementation, the left hook rod 11 and right hook rod 15 facilitate the use of a single manual hoist to lift the rotor, reducing the installation and use of the equipment and the use of manpower, thus saving time and effort.

[0030] In use, the left first link, left second link, right first link, and right second link facilitate adjustment of the spacing between the left and right hook rods, making it suitable for different sizes of wind turbine outer rotor housings. The left third link, left hinge rod, left hook rod, and right third link, right hinge rod, and right hook rod facilitate stable attachment to both ends of the wind turbine outer rotor, forming a balanced and stable hoisting structure. This allows for easy disassembly and removal or installation of the wind turbine outer rotor during maintenance, reducing equipment downtime and labor costs, and achieving time and labor savings.

[0031] This utility model of a power plant desulfurization booster fan maintenance hoist effectively solves the problems of existing manual hoists, which cannot stably lift the rotor when using one hoist and are time-consuming and labor-intensive when using two hoists. It achieves the effect of stably lifting the rotor with a single manual hoist, thus saving time and effort and being easy to operate.

Claims

1. A maintenance hoist for a power plant desulfurization booster fan, comprising: The gourd body (1) is characterized in that: the lower end of the gourd body (1) is connected to a connecting end (2), and the lower end of the connecting end (2) is hinged to a left first connecting rod (3) and a right first connecting rod (5), the lower end of the left first connecting rod (3) is hinged to a left second connecting rod (4), and the lower end of the left second connecting rod (4) is welded to a horizontal left third connecting rod (9), and the inner end of the left third connecting rod (9) is hinged to a left hinge rod (10), and the inner end of the left hinge rod (10) is hinged to a left hook rod (11). The left hook rod (11) is matched and hooked with the left through hole (8) of the left second connecting rod (4). The lower end of the right first connecting rod (5) is welded with the right second connecting rod (6), and the lower end of the right second connecting rod (6) is welded with the right third connecting rod (13). The inner end of the right third connecting rod (13) is hinged with the right hinge rod (14), and the inner end of the right hinge rod (14) is hinged with the right hook rod (15). The right hook rod (15) is matched and hooked with the right through hole (12) of the right second connecting rod (6).

2. The kind of power plant desulfurization booster fan overhauls hoist according to claim 1, its characterized in that, The upper end of the gourd body (1) is provided with a hook, and the lower end of the gourd body (1) is connected with a chain, and the lower end of the chain is fixedly connected to the connecting end (2); the left first connecting rod (3) and the left second connecting rod (4) are of the same length as the right first connecting rod (5) and the right second connecting rod (6), and the left first connecting rod (3) and the right first connecting rod (5) are connected with springs (7).

3. The kind of power plant desulfurization booster fan overhauls hoist according to claim 1, its characterized in that, The inner ends of the left hook rod (11) and the right hook rod (15) are both provided with hooks, and the hooks are rotatably connected to the ends of the rods of the left hook rod (11) and the right hook rod (15); the left through hole (8) and the right through hole (12) are each provided with three equidistant holes with the same inner diameter, and the left through hole (8) and the right through hole (12) are respectively located in the lower half of the rods of the left connecting rod (4) and the right connecting rod (6).

4. The kind of a power plant desulfurization booster fan overhauls hoist according to claim 1 or 2 or 3, its characterized in that, The left three-link (9) and right three-link (13) are inserted into the inner side of the rotor from both ends of the fan rotor, and the left hook rod (11) and right hook rod (15) are inserted into the gap in the rotor housing.

Images