A wind power concrete tower cylinder external steel strand lifting device

Abstract

The present application relates to the technical field of lifting device, and discloses a wind power concrete tower body outer steel strand lifting device, which comprises a fixed plate, further comprises: a locking portion, which is installed on the fixed plate; a guide portion, which is arranged on the fixed plate; a protection portion, which is installed on the fixed plate; the locking portion comprises a locking assembly, which is installed on the fixed plate; a rotating assembly, which is arranged on the fixed plate; the locking assembly comprises two connecting plates fixedly connected at the top of the fixed plate. The present application solves the problem that the existing lifting device is prone to response lag, insufficient braking force or failure of the braking mechanism when the motor suddenly fails, is powered off or transmission fails during use, the steel strand falls rapidly downward, which easily causes high-altitude falling object risk, seriously threatens the safety of construction personnel, has great safety hazards, and has poor reliability and emergency protection capability.

Description

Technical Field

[0001] This invention relates to the field of lifting device technology, specifically to a lifting device for the external steel strands of a wind power concrete tower. Background Technology

[0002] The lifting of external steel strands for wind turbine concrete towers is a key process in wind turbine tower construction. It involves vertically pulling high-strength prestressed steel strands from the bottom of the tower along pre-set channels or guide structures on the outer wall using specialized equipment to the anchoring position at the top of the tower, preparing for subsequent tensioning operations. It adopts a "pilot cable traction + mechanical lifting" mode. First, a thin steel wire rope is threaded through the strands, then connected to the steel strand bundle, and then simultaneously lifted by a top winch or hydraulic device to accurately deliver the steel strands to the designated height. The steel strand lifting device is the core equipment for realizing this process, and its main function is to safely, efficiently, and stably complete the vertical transportation of long-distance, heavy-weight steel strands.

[0003] However, in the operation of existing lifting devices, when the motor suddenly fails, loses power, or the transmission fails, the braking mechanism is prone to delayed response, insufficient braking force, or failure. The steel strand will fall rapidly downwards, which can easily cause the risk of falling objects from heights, seriously threatening the safety of construction workers and posing a significant safety hazard. Its reliability and emergency protection capabilities are also poor. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting device for the external steel strands of a wind power concrete tower. By setting a locking part, it solves the problem that in the existing lifting devices, when the motor suddenly fails, loses power, or the transmission fails, the braking mechanism is prone to response lag, insufficient braking force, or failure. The steel strands will fall rapidly downwards, which can easily cause the risk of falling objects from heights, seriously threaten the safety of construction personnel, and pose a significant safety hazard. The device also has poor reliability and emergency protection capabilities.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a lifting device for the external steel strands of a wind turbine concrete tower, comprising a fixed plate, and further comprising: a locking part mounted on the fixed plate; a guide part disposed on the fixed plate; and a protective part mounted on the fixed plate. The locking part includes a locking assembly mounted on the fixed plate; and a rotating assembly disposed on the fixed plate. The locking assembly includes two connecting plates fixedly connected to the top of the fixed plate, with a rotating shaft passing through the two connecting plates. The rotating shaft is rotatably connected to the two connecting plates and is located on the left side of the connecting plate. A fixed housing is fixedly connected to the left side of the connecting plate. The first rotating shaft extends into the fixed housing. A ratchet is fixedly connected to the outer wall of the first rotating shaft. A hinge rod is hinged to the inner wall of the fixed housing. A second rotating shaft is rotatably connected to the inner wall of the fixed housing. A cam is fixedly connected to the outer wall of the second rotating shaft. An elastic element is provided inside the fixed housing. The hinge rod is adapted to the ratchet. The cam is in contact with the hinge rod. The elastic element includes a conical spring provided inside the fixed housing. The rear side of the conical spring is fixedly connected to the fixed housing. The front side of the conical spring is fixedly connected to the hinge rod. The initial state of the conical spring is a compressed state.

[0006] Furthermore, the guide portion includes a reciprocating assembly mounted on a fixed plate; and a drive assembly disposed on the reciprocating assembly.

[0007] Furthermore, the protective unit includes a falling assembly disposed on a fixed plate; and a conveying assembly mounted on the fixed plate.

[0008] Furthermore, the rotating assembly includes a take-up roller fixedly connected to the outer wall of the rotating shaft, the outer wall of the take-up roller being wound with a steel wire rope, a power component being provided on the connecting plate on the right side, the take-up roller being located between the two connecting plates, the power component including a motor bracket fixedly connected to the right side of the connecting plate on the right side, a motor fixedly connected to the inner wall of the motor bracket, the output shaft of the motor fixedly connected to the rotating shaft on the right side via a coupling, and the motor fixedly connected to the connecting plate on the right side via the motor bracket.

[0009] Furthermore, the reciprocating assembly includes two connecting rods fixedly connected to two connecting plates on opposite sides of each other. A reciprocating lead screw is rotatably connected to the two connecting rods. The reciprocating lead screw passes through the connecting rod located on the right side. An adapter wheel is slidably connected to the outer wall of the reciprocating lead screw, and the adapter wheel is adapted to the wire rope.

[0010] Furthermore, the drive assembly includes a second motor bracket fixedly connected to the connecting rod on the right side. The inner wall of the second motor bracket is fixedly connected to the second motor. The output shaft of the second motor is fixedly connected to the reciprocating lead screw through a coupling. The second motor is fixed to the connecting rod on the right side through the second motor bracket.

[0011] Furthermore, the falling assembly includes a lifting frame fixedly connected to the top of the fixed plate, two rotating shafts three are rotatably connected to the lifting frame, the right sides of the two rotating shafts three extend outside the lifting frame, the inner walls of the two rotating shafts three are fixedly connected to auxiliary rollers one, the outer walls of the two rotating shafts three are fixedly connected to gears, the two gears mesh with each other, and a steel wire rope extends between the two auxiliary rollers one.

[0012] Furthermore, the conveying assembly includes several fixed frames fixedly connected to the top of the lifting frame, a rotating shaft four is rotatably connected between two corresponding fixed frames, auxiliary rollers two are fixedly connected to the outer walls of the two rotating shafts four, several guide rings are fixedly connected to the top of the lifting frame, four fixed frames are provided, and they are arranged in pairs, with one rotating shaft four and one auxiliary roller two on each pair, and five guide rings are provided and distributed in a linear array, with a steel wire rope in contact with two auxiliary rollers two and the steel wire rope passing through the five guide rings.

[0013] The present invention has the following beneficial effects: 1. This invention, by incorporating a locking mechanism, allows for the following operation: First, the steel strand is fixed to the end of the wire rope. Then, motors one and two are started simultaneously. Motor one drives shaft one and the take-up roller to rotate, winding the wire rope and lifting the steel strand. Shaft one drives a ratchet to rotate synchronously. When the ratchet rotates forward, it presses against the hinge rod, causing it to deflect and compress the cone spring, allowing for smooth passage. If motor one suddenly fails, the weight of the steel strand causes the wire rope, take-up roller, and shaft one to reverse. The ratchet then rotates in the opposite direction and is locked by the hinge rod, preventing the take-up roller from continuing to reverse. After the steel strand is lifted and fixed in place, shaft two is rotated counterclockwise. The cam, under eccentric action, pushes the hinge rod away from the ratchet, and then motor one is controlled to rotate in the opposite direction, allowing the wire rope to be lowered, preparing for the next lifting operation. In the event of a motor one failure, the take-up roller can be quickly locked, effectively preventing the steel strand from falling rapidly due to its own weight, significantly improving the safety of high-altitude operations.

[0014] 2. This invention, by setting a guide part, allows the wire rope to be engaged on the adapter wheel during the winding process. The second motor drives the reciprocating screw to rotate, and the reciprocating screw drives the adapter wheel to make reciprocating linear motion along the axial direction. This allows the wire rope to be orderly guided and arranged laterally by the adapter wheel while being wound by the take-up roller, achieving uniform layer-by-layer arrangement of the wire rope on the take-up roller. This ensures that the wire rope is neatly and orderly wound on the take-up roller, avoiding problems such as wire rope stacking, tangled rope, and mutual pressing and entanglement. It guarantees smooth and stable winding, prevents increased winding resistance, wire rope wear or jamming due to winding disorder, extends the service life of the wire rope, and improves the continuity and reliability of the steel strand lifting process.

[0015] 3. By incorporating a protective section, the wire rope passes through two opposing auxiliary rollers during winding. Friction drives the auxiliary rollers and the rotating shaft to rotate synchronously. The two auxiliary rollers operate synchronously in opposite directions through meshing gears. Simultaneously, the wire rope rests against the surface of the auxiliary roller and passes through a guide ring, which provides support and guidance. The guide ring limits and constrains the wire rope, providing stable clamping and guidance, effectively reducing swaying and deviation during winding, ensuring a smooth lifting process. Combined with the support of the auxiliary roller, direct contact and friction between the wire rope and rigid structures are avoided, reducing wear and the risk of wire breakage. The guide ring prevents the wire rope from deviating or loosening during movement, further improving the continuity and safety of winding and lifting operations.

[0016] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the locking part of the present invention; Figure 3 This is a partial cross-sectional view of the locking component of the present invention; Figure 4 This is a partial cross-sectional view of the guide portion of the present invention; Figure 5 This is a partial cross-sectional view of the protective part of the present invention; Figure 6 This is a partial cross-sectional view of the fourth rotating shaft of the present invention; Figure 7 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 8 For the present invention Figure 4 A magnified structural diagram of B in the diagram.

[0019] The attached diagram lists the components represented by each number as follows: In the diagram: 111, Fixed plate; 2, Locking part; 21, Locking assembly; 211, Connecting plate; 212, Rotating shaft one; 213, Fixed housing; 214, Ratchet; 215, Hinge rod; 216, Rotating shaft two; 217, Cam; 218, Cone spring; 22, Rotating assembly; 221, Take-up roller; 222, Wire rope; 223, Motor bracket one; 224, Motor one; 3, Guide part; 31, Reciprocating... Components; 311, Connecting rod; 312, Reciprocating screw; 313, Adaptor wheel; 32, Drive assembly; 321, Motor bracket two; 322, Motor two; 4, Protective part; 41, Drop assembly; 411, Lifting frame; 412, Rotating shaft three; 413, Auxiliary roller one; 414, Gear; 42, Conveying assembly; 421, Fixing frame; 422, Rotating shaft four; 423, Auxiliary roller two; 424, Guide ring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8 As shown, the present invention is a lifting device for the external steel strand of a wind power concrete tower, including a fixing plate 111, and further including: a locking part 2, which is installed on the fixing plate 111; a guide part 3, which is disposed on the fixing plate 111; and a protective part 4, which is installed on the fixing plate 111. The locking part 2 includes a locking assembly 21, which is mounted on the fixed plate 111; and a rotating assembly 22, which is also mounted on the fixed plate 111. The locking assembly 21 includes two connecting plates 211 fixedly connected to the top of the fixed plate 111. A rotating shaft 212 passes through the two connecting plates 211 and is rotatably connected to the two connecting plates 211. A fixed housing 213 is fixedly connected to the left side of the left connecting plate 211. 2. Extending into the fixed housing 213, a ratchet 214 is fixedly connected to the outer wall of the first rotating shaft 212. A hinge rod 215 is hinged to the inner wall of the fixed housing 213. A second rotating shaft 216 is rotatably connected to the inner wall of the fixed housing 213. A cam 217 is fixedly connected to the outer wall of the second rotating shaft 216. An elastic element is provided inside the fixed housing 213. The hinge rod 215 is adapted to the ratchet 214, and the cam 217 contacts the hinge rod 215. The elastic element includes components disposed within the fixed housing 213. A conical spring 218 is fixedly connected to the rear side of a fixed housing 213 and to the front side of a hinge rod 215. The initial state of the conical spring 218 is a compressed state. The rotating assembly 22 includes a take-up roller 221 fixedly connected to the outer wall of the rotating shaft 212. A steel wire rope 222 is wound around the outer wall of the take-up roller 221. A power component is provided on the right connecting plate 211. The take-up roller 221 is located between the two connecting plates 211. The power component includes a motor bracket 223 fixedly connected to the right side of the right connecting plate 211. A motor 224 is fixedly connected to the inner wall of the motor bracket 223. The output shaft of the motor 224 is fixedly connected to the rotating shaft 212 via a coupling. The motor 224 is fixedly connected to the right connecting plate 211 via the motor bracket 223. By setting a locking part 2, the steel strand 222 is effectively prevented from falling rapidly due to its own weight, greatly improving the safety of high-altitude operations.

[0022] The guide section 3 includes a reciprocating assembly 31, which is mounted on a fixed plate 111; and a drive assembly 32, which is disposed on the reciprocating assembly 31. The reciprocating assembly 31 includes two connecting rods 311, which are respectively fixedly connected to two connecting plates 211 on opposite sides. A reciprocating lead screw 312 is rotatably connected to the two connecting rods 311. The reciprocating lead screw 312 passes through the connecting rod 311 located on the right side. An adapter wheel 313 is slidably connected to the outer wall of the reciprocating lead screw 312. The adapter wheel 313 is adapted to the wire rope 222. The drive assembly 32 includes... The system includes a motor bracket 321 fixedly connected to the connecting rod 311 on the right side. A motor 322 is fixedly connected to the inner wall of the motor bracket 321. The output shaft of the motor 322 is fixedly connected to the reciprocating screw 312 via a coupling. The motor 322 is fixed to the connecting rod 311 on the right side via the motor bracket 321. By setting the guide part 3, the system prevents the increase of winding resistance, wear or jamming of the wire rope 222 caused by winding disorder, extends the service life of the wire rope 222, and improves the continuity and reliability of the steel strand 222 lifting process.

[0023] The protective unit 4 includes a falling assembly 41, which is mounted on a fixed plate 111; and a conveying assembly 42, which is also mounted on the fixed plate 111. The falling assembly 41 includes a lifting frame 411 fixedly connected to the top of the fixed plate 111. Two rotating shafts 412 are rotatably connected to the lifting frame 411. The right sides of both rotating shafts 412 extend outside the lifting frame 411. Auxiliary rollers 413 are fixedly connected to the inner walls of both rotating shafts 412, and gears 414 are fixedly connected to the outer walls of both rotating shafts 412. The two gears 414 mesh with each other. A wire rope 222 extends between the two auxiliary rollers 413. The conveying assembly 42 includes several fixed frames 421 fixedly connected to the top of the lifting frame 411, with two corresponding fixed frames... A rotating shaft 422 is rotatably connected between the two shafts 422. An auxiliary roller 423 is fixedly connected to the outer wall of the two shafts 422. Several guide rings 424 are fixedly connected to the top of the lifting frame 411. Four fixed frames 421 are provided, arranged in pairs. Each pair is provided with one rotating shaft 422 and one auxiliary roller 423. Five guide rings 424 are provided and distributed in a linear array. The wire rope 222 is in contact with the two auxiliary rollers 423. The wire rope 222 passes through the five guide rings 424. By setting the protective part 4, the wire rope 222 is prevented from directly contacting and rubbing against the rigid structure, reducing wear and the risk of wire breakage. The guide rings can prevent the wire rope 222 from deviating or loosening during movement, further improving the continuity and safety of winding and lifting operations.

[0024] It should be noted that the control of motor 224 and motor 322 in this application can both be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0025] In use, first fix the steel strand to the end of the wire rope 222, then start motor 1 224 and motor 2 322 simultaneously. After motor 1 224 starts, it will continuously rotate shaft 1 212 and take-up roller 221. During rotation, take-up roller 221 will take up the wire rope 222 and pull up the steel strand together. When shaft 1 212 rotates, it will also rotate ratchet 214. When ratchet 214 rotates, it will press the hinge rod 215. At this time, the hinge rod 215 will change angle on the fixed shell 213. When the hinge rod 215 moves, it will press the cone spring 218. After pressing, ratchet 214 will pass through hinge rod 215. If motor 1 224 fails, the weight of the steel strand will cause the wire rope 222 to move downwards. At this time, take-up roller 221 The rotating shaft 212 will rotate in reverse. When the rotating shaft 212 rotates in reverse, it will cause the ratchet 214 to move along with it. When the ratchet 214 rotates in reverse, it will directly lock onto the hinge rod 215. At this time, the hinge rod 215 will restrict the movement of the ratchet 214, the rotating shaft 212 and the take-up roller 221. This can prevent the steel strand from falling rapidly due to the failure of the motor 224. After the steel strand is pulled up and fixed, the steel strand is removed from the wire rope 222. Then the rotating shaft 216 is rotated counterclockwise. When rotating, due to the eccentricity, the hinge rod 215 will be pushed backward through the cam 217. As the hinge rod 215 is pushed, it will disengage from the ratchet 214. At this time, the motor 224 will rotate in reverse, so that the wire rope 222 can be lowered again for the next lifting of the steel strand. When the wire rope 222 is wound up, it will be locked onto the adapter wheel 313. At the same time, the motor 322 will drive the reciprocating screw 312 to rotate. The rotation of the reciprocating screw 312 will drive the adapter wheel 313 to move back and forth. With this movement, the wire rope 222 can be evenly distributed on the take-up roller 221, thereby achieving the effect of even distribution of the wire rope 222 and preventing the wire rope 222 from getting tangled together, which would result in poor winding effect or tangling. When the wire rope 222 is retracted, it passes through two auxiliary rollers 413. At this time, the auxiliary rollers 413 are rotated by friction. When the auxiliary rollers 413 rotate, the corresponding shaft 412 and gear 414 will move accordingly. The rotation of one side of the gear 414 will drive the other side of the gear 414, auxiliary roller 413 and shaft 412 to rotate, thereby ensuring the stability of the wire rope 222 when it is retracted. At the same time, the wire rope 222 will be on the auxiliary roller 423. The support and assistance of the auxiliary roller 423 for the wire rope 222 can prevent the wire rope 222 from being worn. The guide ring 424 can prevent the wire rope 222 from falling off the guide ring 424.

[0026] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A lifting device for the external steel strands of a wind turbine concrete tower, comprising a fixing plate (111), characterized in that, Also includes: Locking part (2), said locking part (2) is mounted on fixed plate (111); Guide part (3), the guide part (3) is disposed on the fixed plate (111); Protective part (4), said protective part (4) is mounted on fixed plate (111); The locking part (2) includes a locking component (21) which is mounted on the fixing plate (111); as well as A rotating assembly (22) is mounted on a fixed plate (111); The locking assembly (21) includes two connecting plates (211) fixedly connected to the top of the fixed plate (111). A first rotating shaft (212) passes through the two connecting plates (211). The first rotating shaft (212) is rotatably connected to the two connecting plates (211). A fixed shell (213) is fixedly connected to the left side of the left connecting plate (211). The first rotating shaft (212) extends into the fixed shell (213). A ratchet (214) is fixedly connected to the outer wall of the first rotating shaft (212). A hinge rod (215) is hinged to the inner wall of the fixed shell (213). A second rotating shaft (216) is rotatably connected to the inner wall of the fixed shell (213). A cam (217) is fixedly connected to the outer wall of the second rotating shaft (216). An elastic element is provided inside the fixed shell (213). The hinge rod (215) is adapted to the ratchet (214), and the cam (217) is in contact with the hinge rod (215).

2. The wind turbine concrete tower external steel strand lifting device according to claim 1, characterized in that, The guide portion (3) includes a reciprocating assembly (31) mounted on a fixed plate (111); and A drive component (32) is disposed on a reciprocating component (31).

3. The external steel strand lifting device for a wind power concrete tower according to claim 1, characterized in that, The protective part (4) includes a drop assembly (41) disposed on a fixed plate (111); and A conveying assembly (42) is mounted on a fixed plate (111).

4. The external steel strand lifting device for a wind power concrete tower according to claim 1, characterized in that, The rotating assembly (22) includes a take-up roller (221) fixedly connected to the outer wall of the rotating shaft (212). The outer wall of the take-up roller (221) is wound with a steel wire rope (222). A power component is provided on the connecting plate (211) on the right side. The take-up roller (221) is located between the two connecting plates (211).

5. The wind turbine concrete tower external steel strand lifting device according to claim 2, characterized in that, The reciprocating assembly (31) includes two connecting rods (311) fixedly connected to two connecting plates (211) on opposite sides. A reciprocating screw (312) is rotatably connected to the two connecting rods (311). The reciprocating screw (312) passes through the connecting rod (311) on the right side. An adapter wheel (313) is slidably connected to the outer wall of the reciprocating screw (312). Among them, the adapter wheel (313) is compatible with the wire rope (222).

6. The external steel strand lifting device for a wind power concrete tower according to claim 2, characterized in that, The drive assembly (32) includes a motor bracket (321) fixedly connected to the right connecting rod (311), a motor (322) fixedly connected to the inner wall of the motor bracket (321), and the output shaft of the motor (322) fixedly connected to the reciprocating lead screw (312) through a coupling. Among them, motor two (322) is fixed on the connecting rod (311) located on the right side by motor bracket two (321).

7. The wind turbine concrete tower external steel strand lifting device according to claim 3, characterized in that, The falling assembly (41) includes a lifting frame (411) fixedly connected to the top of the fixed plate (111). Two rotating shafts (412) are rotatably connected to the lifting frame (411). The right sides of the two rotating shafts (412) extend outside the lifting frame (411). An auxiliary roller (413) is fixedly connected to the inner wall of each of the two rotating shafts (412). A gear (414) is fixedly connected to the outer wall of each of the two rotating shafts (412). The two gears (414) mesh with each other. The wire rope (222) extends between the two auxiliary rollers (413).

8. The external steel strand lifting device for a wind power concrete tower according to claim 3, characterized in that, The conveying assembly (42) includes several fixed frames (421) fixedly connected to the top of the lifting frame (411), a rotating shaft four (422) rotatably connected between two corresponding fixed frames (421), an auxiliary roller two (423) fixedly connected to the outer wall of the two rotating shaft four (422), and several guide rings (424) fixedly connected to the top of the lifting frame (411). Among them, there are four fixed frames (421), which are arranged in pairs. Each pair is equipped with a rotating shaft (422) and an auxiliary roller (423). There are five guide rings (424) arranged in a linear array. The wire rope (222) is in contact with the two auxiliary rollers (423) and the wire rope (222) passes through the five guide rings (424).

9. A wind power concrete tower external steel strand lifting device according to claim 1, characterized in that, The elastic element includes a cone spring (218) disposed in a fixed shell (213), the rear side of the cone spring (218) being fixedly connected to the fixed shell (213), and the front side of the cone spring (218) being fixedly connected to the hinge rod (215). The initial state of the cone spring (218) is that it is compressed.

10. A wind power concrete tower external steel strand lifting device according to claim 4, characterized in that, The power component includes a motor bracket (223) fixedly connected to the right side of the right connecting plate (211). A motor (224) is fixedly connected to the inner wall of the motor bracket (223). The output shaft of the motor (224) is fixedly connected to the rotating shaft (212) through a coupling. Among them, motor one (224) is fixedly connected to the connecting plate (211) located on the right side through motor bracket one (223).

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