Special lifting appliance for lifting air cooling island steel structure

Abstract

The invention discloses a special lifting appliance for air cooling island steel structure lifting, which comprises a lifting angle adjusting mechanism, lifting clamp control mechanisms are connected to both ends of the bottom of the lifting angle adjusting mechanism, and lifting angle buffer mechanisms are fixedly arranged at both ends of the bottoms of the two lifting clamp control mechanisms. The invention belongs to the technical field of air cooling island steel structure hoisting. The output end of the motor fixed to one side of the positioning base drives the positioning lead screw to rotate, through positioning of the positioning frame fixed to one side of the L-shaped lifting frame, the movable frame in threaded connection to one end of the outer wall of the positioning lead screw moves along the L-shaped lifting frame, and the L-shaped lifting frame rotates and deviates due to adjustment of the stress center; the L-shaped hoisting frame is rotated to an approximately vertical angle through counterweight of the counterweight block, so that the steel structure can be conveniently turned over through control of the hoisting tool, cooperation of a plurality of cranes is reduced, the hoisting efficiency of the cold air island steel structure is improved, and the hidden danger problem that the steel structure is damaged due to improper cooperation of the cranes is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of air-cooling island steel structure hoisting, and in particular relates to a special hoisting device for air-cooling island steel structure hoisting. Background Art

[0002] ‌Air-cooling island‌ is a figurative name for the air cooling device in a power plant, which is mainly used to cool high-temperature steam. It consists of 56 fans, which take away heat from the heat exchanger through the fan, and then let the surrounding air take away the heat to achieve the cooling effect. The air-cooling island uses air as the cooling medium and dissipates heat through the fan, and is usually small in size; traditional cooling towers will cause water precipitation, environmental pollution and other problems, and require a large area of ​​ground space, while the air-cooling island does not need to use water, avoiding these problems and reducing water consumption; at the same time, the air-cooling island only needs to occupy a smaller area, which can be designed and set up more flexibly, and a large number of hoisting operations are required when the air-cooling island is built.

[0003] In the prior art, a large number of steel structures are hoisted during the construction of an air-cooling island. When hoisting steel structure components assembled on the ground, they need to be turned with the help of auxiliary cranes, so that the assembled flat steel structure is transformed into a vertical direction for hoisting. This not only increases the number of cranes, but also increases the difficulty of hoisting coordination, which is easy to cause hidden dangers of collision damage to the assembled steel structure. In addition, the steel structure is easily worn due to inadequate hoisting coordination, which is not conducive to subsequent installation.

[0004] Therefore, it is necessary to invent a special lifting device for lifting the steel structure of the air-cooled island to solve the above problems. The lifting device can be adjusted to adjust the angle of the steel structure and reduce the coordination risks of multiple cranes. Summary of the invention

[0005] In view of the above problems, the present invention provides a special lifting device for lifting the steel structure of an air-cooled island to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a special hoisting device for air-cooled island steel structure, comprising a hoisting angle adjustment mechanism, both ends of the bottom of the hoisting angle adjustment mechanism are connected to a hoisting fixture control mechanism, and both ends of the bottom of the two hoisting fixture control mechanisms are fixed with a hoisting angle buffer mechanism, wherein: The lifting angle adjustment mechanism includes an L-shaped lifting frame, a positioning seat is fixedly provided at one end of the inner wall of the L-shaped lifting frame, a positioning screw is rotatably provided on one side of the positioning seat, a positioning frame is fixedly provided on one side of the L-shaped lifting frame, one end of the positioning screw is rotatably connected to one side of the positioning frame, a moving frame is threadedly provided at one end of the outer wall of the positioning screw, a control wheel is rotatably provided at one end of the bottom of the moving frame, both ends of the outer wall of the control wheel are connected to the lifting wheels through a first lifting steel rope, a motor is fixedly provided on one side of the positioning seat, the output end of the motor is fixedly connected to one end of the positioning screw, both ends of the L-shaped lifting frame are fixedly provided with lifting rings, the two lifting rings are connected to the second lifting steel rope, and a counterweight is fixedly provided at one end of the inner wall of the L-shaped lifting frame.

[0007] Preferably, the lifting fixture control mechanism includes a control lifting frame and a fixed frame, both ends of the inner wall of the control lifting frame are rotatably provided with driving gears, the tooth surfaces of the two driving gears are meshed with each other, one side of the two driving gears is fixedly provided with a control frame, one end of the two control frames is rotatably provided with an adjustment frame, both sides of the two adjustment frames are fixedly provided with positioning bars, the two adjustment frames are respectively slidably connected to the two sides of the inner wall of the fixed frame through the positioning bars, the middle positions of the two sides of the two control frames are rotatably provided with rotating rods, one end of the four rotating rods is fixedly provided with positioning gears, the tooth surfaces of the four positioning gears are meshed with each other, and one side of the four positioning gears is rotatably connected to the middle positions of the two sides of the fixed frame.

[0008] Preferably, the two control hoisting frames are respectively connected to one end of two second hoisting steel ropes.

[0009] Preferably, a support frame is fixedly provided at the middle position of the bottom of the fixing frame.

[0010] Preferably, a positioning rod is fixedly provided in the middle position of the fixing frame, the two ends of the two adjustment frames are respectively connected with the two ends of the outer wall of the positioning rod, and a reset spring is inserted in the middle position of the outer wall of the positioning rod.

[0011] Preferably, an adjustment seat is fixedly provided at one end of the bottom of the two adjustment frames, and a balancing frame is fixedly provided at the bottom end of the two adjustment seats.

[0012] Preferably, the lifting angle buffer mechanism includes two clamping frames, the inner walls of the two clamping frames are fixedly provided with sliding rings, the inner walls of the two clamping frames are rotatably provided with rotating frames through sliding rings, one end of both sides of the two rotating frames are fixedly provided with positioning handles, the middle position of one side of the two clamping frames is threaded with a fixed screw rod, one end of the two fixed screw rods is fixedly provided with a fixed handle, and the other ends of the two fixed screw rods are respectively threadedly connected to one side of the outer wall of the two rotating frames.

[0013] Preferably, both ends of the bottom of the two clamping frames are rotatably provided with moving wheels, both ends of one side of one of the clamping frames are fixedly provided with limiting rods, and both ends of one side of the other clamping frame are provided with limiting grooves.

[0014] Preferably, the motor is electrically connected to the built-in power supply via an external remote control switch.

[0015] Technical effects and advantages of the present invention: The present invention drives the positioning screw to rotate through the output end of the motor fixed on one side of the positioning seat, and through the positioning of the positioning frame fixed on one side of the L-shaped hanging frame, the moving frame threadedly connected to one end of the outer wall of the positioning screw moves along the L-shaped hanging frame. The L-shaped hanging frame is rotated and offset due to the adjustment of the force center. The counterweight of the counterweight block allows the L-shaped hanging frame to rotate to a nearly vertical angle, so that the steel structure hoisted at the bottom end of the L-shaped hanging frame rotates from a horizontal direction to a nearly vertical direction. The steel structure is easy to flip through the control of the hanger, reducing the coordination of multiple cranes, improving the hoisting efficiency of the cold air island steel structure, and avoiding the hidden danger of steel structure damage caused by improper coordination of the cranes. The present invention drives two control frames to rotate respectively by controlling two driving gears meshing and rotating on the inner wall of the hoisting frame, so that the adjustment frames rotatably connected to one end of the two control frames are respectively interlaced and connected with the two ends of the fixed frame, so that the two balancing frames respectively drive the clamping frames fixed at the two ends to move, so that the clamping frames are stably contacted by the limiting rods and the limiting grooves, so that the rotating frame rotating on the inner wall of the clamping frame is stably supported on the bottom end of the single steel frame of the steel structure, and the steel structure is convenient to leave the ground for suspended hoisting through continuous hoisting by the crane, and a certain height is maintained and hoisted; The present invention contacts the ground by rotating the moving wheels connected to the bottom end of the clamping frame, so that the clamping frame can be easily maintained on the outer wall of the steel structure, avoiding the cold air island steel structure to be hoisted at a low assembly position. The support frame fixed at the bottom end of the fixed frame is easy to contact the top of the steel structure, so that the clamping frame can be easily maintained on the outer wall of the steel structure, avoiding the cold air island steel structure to be hoisted at a high assembly position, thereby improving the use efficiency of the sling and avoiding constraints caused by the size of the steel structure.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the hoisting angle adjustment mechanism of the present invention; Figure 3 It is a schematic diagram of the lifting control structure of the mobile frame of the present invention; Figure 4 It is a schematic diagram of the structure of the L-shaped hanging frame of the present invention; Figure 5 It is a schematic diagram of the distribution structure of the lifting fixture control mechanism and the lifting angle buffer mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the control mechanism of the lifting fixture of the present invention; Figure 7 It is a schematic diagram of the internal structure of the control mechanism of the lifting fixture of the present invention; Figure 8 It is a schematic diagram of the distribution structure of the lifting angle buffer mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the lifting angle buffer mechanism of the present invention.

[0019] In the figure: 1. Lifting angle adjustment mechanism; 101. L-shaped lifting frame; 102. Positioning seat; 103. Positioning frame; 104. Positioning screw; 105. Motor; 106. Moving frame; 107. Control wheel; 108. First lifting rope; 109. Lifting wheel; 110. Counterweight; 111. Lifting ring; 112. Second lifting rope; 2. Lifting fixture control mechanism; 201. Control lifting frame; 202. Driving gear; 203. Control frame; 204. Adjustment Frame; 205, adjustment seat; 206, fixed frame; 207, rotating rod; 208, positioning gear; 209, supporting frame; 210, positioning bar; 211, positioning rod; 212, reset spring; 213, balancing frame; 3, lifting angle buffer mechanism; 301, clamping frame; 302, sliding ring; 303, rotating frame; 304, positioning handle; 305, fixing screw rod; 306, fixing handle; 307, limiting rod; 308, limiting groove; 309, moving wheel. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The present invention provides Figure 1-9 The shown special lifting device for lifting the air-cooling island steel structure includes a lifting angle adjustment mechanism 1, both ends of the bottom of the lifting angle adjustment mechanism 1 are connected to a lifting fixture control mechanism 2, and both ends of the bottom of the two lifting fixture control mechanisms 2 are fixed with a lifting angle buffer mechanism 3.

[0022] As a specific embodiment of the present invention, the lifting fixture control mechanism 2 includes a control lifting frame 201 and a fixed frame 206, and driving gears 202 are rotatably provided at both ends of the inner wall of the control lifting frame 201, and the tooth surfaces of the two driving gears 202 are meshed with each other. A control frame 203 is fixedly provided on one side of the two driving gears 202, and an adjustment frame 204 is rotatably provided at one end of the two control frames 203. Positioning bars 210 are fixedly provided on both sides of the two adjusting frames 204. The two adjusting frames 204 are respectively slidably connected to the two sides of the inner wall of the fixed frame 206 through the positioning bars 210. A rotating rod 207 is rotatably provided at the middle position of the two sides of the two control frames 203, and a positioning gear 208 is fixedly provided at one end of the four rotating rods 207. The tooth surfaces of the four positioning gears 208 are meshed with each other in pairs, and one side of the four positioning gears 208 is rotatably connected to the middle position of the two sides of the fixed frame 206.

[0023] The two control hoisting frames 201 are connected to one end of the two second hoisting steel ropes 112 respectively.

[0024] A support frame 209 is fixedly provided at the middle position of the bottom of the fixing frame 206 .

[0025] A positioning rod 211 is fixedly provided in the middle position of the fixing frame 206 , and two ends of the two adjustment frames 204 are respectively connected with two ends of the outer wall of the positioning rod 211 , and a return spring 212 is inserted in the middle position of the outer wall of the positioning rod 211 .

[0026] An adjustment seat 205 is fixedly disposed at one end of the bottom of the two adjustment frames 204 , and a balance frame 213 is fixedly disposed at the bottom end of the two adjustment seats 205 .

[0027] As a specific embodiment of the present invention, the lifting angle buffer mechanism 3 includes two clamping frames 301, the inner walls of the two clamping frames 301 are fixedly provided with sliding rings 302, the inner walls of the two clamping frames 301 are rotatably provided with rotating frames 303 through the sliding rings 302, one end of both sides of the two rotating frames 303 are fixedly provided with positioning handles 304, the middle position of one side of the two clamping frames 301 is threaded with a fixed screw rod 305, one end of the two fixed screw rods 305 is fixedly provided with a fixed handle 306, and the other ends of the two fixed screw rods 305 are respectively threadedly connected to one side of the outer wall of the two rotating frames 303.

[0028] Both ends of the bottom of the two clamping frames 301 are rotatably provided with moving wheels 309, both ends of one side of one clamping frame 301 are fixed with limiting rods 307, and both ends of one side of the other clamping frame 301 are provided with limiting grooves 308; When it is necessary to use a special lifting device for lifting the air-cooled island steel structure, the lifting angle adjustment mechanism 1 is installed at the lifting position of the crane through the control wheel 107, the first lifting steel rope 108 and the lifting wheel 109, and the four lifting angle buffer mechanisms 3 are respectively placed at the two ends of both sides of the steel structure to be lifted, so that the outer wall of the steel structure distributed by multiple clamping frames 301 is lifted upward to a certain position, and the two driving gears 202 that mesh and rotate through the inner wall of the control lifting frame 201 respectively drive the two control frames 203 to rotate, so that the adjustment frames 204 that are connected to one end of the two control frames 203 are respectively connected to the two ends of the fixed frame 206. The two adjusting frames 204 are connected in an interlaced manner, and the rotating rods 207 on both sides of the control frame 203 are linked, and the positioning gears 208 fixed at one end of the rotating rods 207 are meshed with each other, so that the two adjusting frames 204 respectively drive the balancing frames 213 fixed at the bottom ends to stably move toward each other through the adjusting seats 205, so that the two balancing frames 213 respectively drive the clamping frames 301 fixed at both ends to move, so that the clamping frames 301 are stably contacted through the limiting rods 307 and the limiting grooves 308, so that the rotating frame 303 rotating on the inner wall of the clamping frame 301 is stably supported at the bottom end of the single steel frame of the steel structure, and the steel structure is conveniently lifted off the ground for suspended lifting through the continuous lifting of the crane, and a certain height is maintained for stable observation; Rotate the fixed handle 306 so that the fixed handle 306 drives the fixed screw rod 305 to rotate in a threaded manner, so that one end of the fixed screw rod 305 is separated from one side of the rotating frame 303, so that the rotating frame 303 can automatically adjust its direction according to the weight of the steel structure, thereby reducing the potential damage caused by friction between the sling and the steel structure.

[0029] As a specific embodiment of the present invention, the lifting angle adjustment mechanism 1 includes an L-shaped lifting frame 101, a positioning seat 102 is fixedly provided at one end of the inner wall of the L-shaped lifting frame 101, a positioning screw 104 is rotatably provided on one side of the positioning seat 102, a positioning frame 103 is fixedly provided on one side of the L-shaped lifting frame 101, one end of the positioning screw 104 is rotatably connected to one side of the positioning frame 103, one end of the outer wall of the positioning screw 104 is threadedly provided with a moving frame 106, and the bottom of the moving frame 106 A control wheel 107 is rotatably provided at one end, and both ends of the outer wall of the control wheel 107 are connected to a hoisting wheel 109 through a first hoisting steel rope 108. A motor 105 is fixedly provided on one side of the positioning seat 102, and the output end of the motor 105 is fixedly connected to one end of the positioning screw rod 104. Both ends of the L-shaped hanging frame 101 are fixedly provided with a hoisting ring 111, and the two hoisting rings 111 are connected to a second hoisting steel rope 112. A counterweight block 110 is fixedly provided at one end of the inner wall of the L-shaped hanging frame 101; The motor 105 is electrically connected to the built-in power supply via an external remote control switch; The output end of the motor 105 fixed on one side of the positioning seat 102 drives the positioning screw 104 to rotate, and the positioning frame 103 fixed on one side of the L-shaped hanging frame 101 is positioned, so that the moving frame 106 threadedly connected to one end of the outer wall of the positioning screw 104 moves along the L-shaped hanging frame 101. Due to the displacement of the control wheel 107 rotating on one side of the moving frame 106, the L-shaped hanging frame 101 rotates and deviates due to the adjustment of the force center. When the moving frame 106 moves to the end, the counterweight block 1 The counterweight of 10 just makes the L-shaped hoisting frame 101 rotate to a nearly vertical angle, so that the steel structure hoisted at the bottom of the L-shaped hoisting frame 101 rotates from a horizontal direction to a nearly vertical direction. Due to the protruding protection at one end of the L-shaped hoisting frame 101, the steel structure and the hoisting angle buffer mechanism 3 will not be blocked by the hoisting frame, so that the steel structure can be easily turned over by the control of the hoisting device, reducing the coordination of multiple cranes, improving the hoisting efficiency of the cold air island steel structure, and avoiding the hidden danger of steel structure damage caused by improper coordination of the cranes; When the lifting is completed and the steel structure needs to be lowered, the lifting clamp control mechanism 2 and the lifting angle buffer mechanism 3 located at the bottom side of the steel structure first contact the place to be installed, and contact and support are performed by rotating the moving wheel 309 at the bottom end of the clamping frame 301. When the clamping frame 301 and the balance frame 213 obtain the supporting force, the tension of the second lifting steel rope 112 is reduced due to the continuous descent of the lifting, and the elastic reset of the reset spring 212 inserted in the outer wall of the positioning rod 211 makes the adjustment frame 204 inserted in the outer wall of the positioning rod 211 at both ends drive the clamping frame 301 to separate through the adjustment seat 205 and the balance frame 213, so that the clamping frame 301 is separated from the bottom end of the steel structure, and the lifting clamp control mechanism 2 and the lifting angle buffer mechanism 3 are controlled to move outward, so that the steel structure can be vertically stabilized at the place to be installed through the control of the crane, thereby increasing the convenience of lifting; When the lifting device is removed, the angle of the rotating frame 303 is adjusted by controlling the positioning handle 304, and the fixing handle 306 is turned so that the fixing screw rod 305 is threaded into one side of the rotating frame 303, so that the rotating frame 303 is easy to position and convenient for the next recycling; When the cold air island steel structure is assembled on the ground, if the whole wood used is low, the moving wheel 309 connected to the bottom end of the clamping frame 301 is rotated to contact the ground, so that the clamping frame 301 is easy to maintain on the outer wall of the steel structure. When the whole wood is high, the support frame 209 fixed at the bottom end of the fixed frame 206 is easy to contact the top of the steel structure, so that the clamping frame 301 is easy to maintain on the outer wall of the steel structure, increasing the use efficiency of the sling and avoiding constraints caused by the size of the steel structure.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special hoisting device for hoisting an air-cooling island steel structure, comprising a hoisting angle adjustment mechanism (1), characterized in that: Both ends of the bottom of the lifting angle adjustment mechanism (1) are connected to a lifting fixture control mechanism (2), and both ends of the bottom of the two lifting fixture control mechanisms (2) are fixedly provided with a lifting angle buffer mechanism (3), wherein: The hoisting angle adjustment mechanism (1) comprises an L-shaped hoisting frame (101), a positioning seat (102) is fixedly provided at one end of the inner wall of the L-shaped hoisting frame (101), a positioning screw rod (104) is rotatably provided at one side of the positioning seat (102), a positioning frame (103) is fixedly provided at one side of the L-shaped hoisting frame (101), one end of the positioning screw rod (104) is rotatably connected to one side of the positioning frame (103), one end of the outer wall of the positioning screw rod (104) is threadedly provided with a moving frame (106), and one end of the bottom of the moving frame (106) is rotatably provided with a control A control wheel (107), both ends of the outer wall of the control wheel (107) are connected to a hoisting wheel (109) via a first hoisting steel rope (108), a motor (105) is fixedly provided on one side of the positioning seat (102), an output end of the motor (105) is fixedly connected to one end of a positioning screw rod (104), both ends of the L-shaped hoisting frame (101) are fixedly provided with hoisting rings (111), both of the two hoisting rings (111) are connected to a second hoisting steel rope (112), and a counterweight (110) is fixedly provided on one end of the inner wall of the L-shaped hoisting frame (101).

2. The special lifting device for lifting the air-cooling island steel structure according to claim 1 is characterized by: The hoisting fixture control mechanism (2) comprises a control hoisting frame (201) and a fixed frame (206), drive gears (202) are rotatably provided at both ends of the inner wall of the control hoisting frame (201), the tooth surfaces of the two drive gears (202) mesh with each other, a control frame (203) is fixedly provided on one side of the two drive gears (202), an adjustment frame (204) is rotatably provided on one end of the two control frames (203), and positioning bars (204) are fixedly provided on both sides of the two adjustment frames (204). 10), the two adjustment frames (204) are slidably connected to the inner walls of the fixed frame (206) on both sides through positioning bars (210), the middle positions on both sides of the two control frames (203) are rotatably provided with rotating rods (207), one end of the four rotating rods (207) is fixedly provided with positioning gears (208), the tooth surfaces of the four positioning gears (208) are meshed with each other in pairs, and one side of the four positioning gears (208) is rotatably connected to the middle positions on both sides of the fixed frame (206).

3. The special lifting device for lifting the air-cooling island steel structure according to claim 2 is characterized by: The two control hoisting frames (201) are respectively connected to one end of two second hoisting steel ropes (112).

4. The special lifting device for lifting the air-cooling island steel structure according to claim 2 is characterized by: A support frame (209) is fixedly provided at the middle position of the bottom of the fixing frame (206).

5. The special lifting device for lifting the steel structure of the air-cooling island according to claim 2 is characterized by: A positioning rod (211) is fixedly provided in the middle position of the fixing frame (206), the two ends of the two adjustment frames (204) are respectively connected to the two ends of the outer wall of the positioning rod (211), and a return spring (212) is inserted in the middle position of the outer wall of the positioning rod (211).

6. The special lifting device for lifting the steel structure of the air-cooling island according to claim 2 is characterized by: An adjustment seat (205) is fixedly provided at one end of the bottom of the two adjustment seats (204), and a balance frame (213) is fixedly provided at the bottom end of the two adjustment seats (205).

7. The special lifting device for lifting the air-cooling island steel structure according to claim 1 is characterized by: The lifting angle buffer mechanism (3) comprises two clamping frames (301), the inner walls of the two clamping frames (301) are fixedly provided with sliding rings (302), the inner walls of the two clamping frames (301) are rotatably provided with rotating frames (303) through the sliding rings (302), positioning handles (304) are fixedly provided at one end of both sides of the two rotating frames (303), a fixing screw (305) is threadedly provided at the middle position of one side of the two clamping frames (301), a fixing handle (306) is fixedly provided at one end of the two fixing screws (305), and the other ends of the two fixing screws (305) are respectively threadedly connected to one side of the outer wall of the two rotating frames (303).

8. The special lifting device for lifting the steel structure of the air-cooling island according to claim 7 is characterized by: Both ends of the bottom of the two clamping frames (301) are rotatably provided with moving wheels (309), both ends of one side of one of the clamping frames (301) are fixedly provided with limiting rods (307), and both ends of one side of the other clamping frame (301) are provided with limiting grooves (308).

9. The special lifting device for lifting the steel structure of the air-cooling island according to claim 1 is characterized by: The motor (105) is electrically connected to the built-in power supply via an external remote control switch.

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