Hoisting device

Abstract

The utility model discloses a hoisting device, which relates to the technical field of hoisting devices, and comprises a base, a hoisting mechanism and a pressing mechanism, the hoisting mechanism comprises a hoisting belt and two lifting parts arranged on the base at intervals, the two ends of the hoisting belt are respectively connected with the traction ends of the two lifting parts, and the hoisting belt is used for placing fan blades; the pressing mechanism comprises a rotating telescopic part and a floating pressing plate, one end of the rotating telescopic part is rotationally installed on the base, the floating pressing plate is rotationally connected with the other end of the rotating telescopic part, and the floating pressing plate is used for abutting against the fan blade. By arranging the floating pressing plate, the fan blade can be positioned and fixed together with the hanging belt, it is ensured that the fan blade is located at the correct installation position in the assembling process, when the fan blade is clamped, the floating pressing plate can help control the clamping force, it is ensured that the fan blade is subjected to appropriate pressure in the clamping process, and the clamping efficiency is improved. And the condition that the fan blades are crushed due to extrusion caused by too large pressure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting devices, in particular to a hoisting device. Background Art

[0002] With the gradual development and utilization of wind energy resources, in order to obtain more wind energy, the power of wind turbines is getting bigger and bigger, and the blade length and wind turbine height are also increasing. At present, the hoisting of wind turbine blades is generally to lift the wind turbine blades with a sling, and then press the blades with a pressure plate, or directly clamp the blades with two clamps, and then transport the two clamps to the installation location; however, this method cannot control the pressure of the pressure plate on the wind turbine blades when clamping the wind turbine blades. Excessive pressure may cause the wind turbine blades to be damaged, and too little pressure will not be able to clamp the wind turbine blades, resulting in the wind turbine blades falling during the hoisting process.

[0003] Therefore, it is necessary to provide a new lifting device to solve the above-mentioned technical problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a hoisting device, aiming to improve the technical problem in the prior art that the hoisting device cannot adjust the pressure of the pressure plate on the fan blades.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a lifting device, comprising:

[0006] Pedestal;

[0007] A lifting mechanism, the lifting mechanism comprising a lifting belt and two lifting components spaced apart from each other on the base, the two ends of the lifting belt being respectively connected to the traction ends of the two lifting components, the lifting belt being used to place the fan blades;

[0008] The clamping mechanism includes a rotating telescopic component and a floating pressure plate. One end of the rotating telescopic component is rotatably mounted on the base, and the floating pressure plate is rotatably connected to the other end of the rotating telescopic component. The floating pressure plate is used to abut against the fan blade.

[0009] In one embodiment, the floating pressure plate includes a first substrate, a second substrate, an elastic member, a telescopic rod and an abutment plate, the first substrate is rotatably connected to the rotating telescopic component, the telescopic rod is installed on the first substrate, a telescopic hole is formed on the second substrate, an end of the telescopic rod away from the first substrate is telescopically installed in the telescopic hole, the abutment plate is connected to a side of the second substrate away from the first substrate, and the two ends of the elastic member are respectively connected to the first substrate and the second substrate.

[0010] In one embodiment, the floating pressure plate further includes a guide rod, the second substrate further forms a guide hole, one end of the guide rod is installed on the first substrate, the other end of the guide rod is telescopically installed in the guide hole, and the elastic member is sleeved on the guide rod.

[0011] In one embodiment, the number of the elastic members is multiple, the number of the guide rods is multiple, the number of the guide holes is multiple, the numbers of the multiple guide rods, the multiple guide holes and the multiple elastic members are equal, and they are arranged in one-to-one correspondence.

[0012] In one embodiment, the floating pressure plate further includes locking nuts, the number of the locking nuts is two, external threads are formed at both ends of the guide rod and respectively extend out of the first substrate and the second substrate, and the two locking nuts are respectively installed at both ends of the guide rod.

[0013] In one embodiment, the rotating and telescoping component includes an electro-hydraulic push rod and a telescoping sub-component, the cylinder body of the electro-hydraulic push rod is rotatably connected to the base, the extending shaft of the electro-hydraulic push rod is rotatably connected to the telescoping sub-component, and both ends of the telescoping sub-component are respectively rotatably connected to the base and the floating pressure plate.

[0014] In one embodiment, the telescoping sub-component includes a bushing and an extending rod, the extending rod is telescopically installed in the bushing, one end of the extending rod away from the bushing is rotatably connected to the floating pressure plate, and one end of the bushing away from the extending rod is rotatably connected to the base.

[0015] In one embodiment, the bushing forms a first mounting hole, the extending rod forms a second mounting hole, the numbers of the first mounting hole and the second mounting hole are both multiple, the telescoping sub-component further includes a fastener, and the fastener passes through one of the first mounting holes and is installed in one of the second mounting holes.

[0016] In one embodiment, the hoisting device further includes an electric control cabinet, a battery pack is arranged in the electric control cabinet, and the battery pack is electrically connected to the electro-hydraulic push rod.

[0017] In one embodiment, the hoisting device further includes a pressure sensor and a control device, the pressure sensor is arranged on one side of the floating pressure plate for abutting against the wind turbine blade, and both the pressure sensor and the electro-hydraulic push rod are in signal connection with the control device.

[0018] In the above solution, the hoisting device includes a base, a hoisting mechanism, and a pressing mechanism. The hoisting mechanism includes a sling and two lifting components spaced apart on the base. The two ends of the sling are respectively connected to the traction ends of the two lifting components, and the sling is used to place the wind turbine blade. The pressing mechanism includes a rotating telescopic component and a floating pressing plate. One end of the rotating telescopic component is rotatably installed on the base, and the floating pressing plate is rotatably connected to the other end of the rotating telescopic component. The floating pressing plate is used to abut against the wind turbine blade. When hoisting the wind turbine blade is required, the two ends of the sling are respectively connected to the two lifting components, and the wind turbine blade is placed on the sling. When the floating pressing plate does not abut against the wind turbine blade, there is no external pressure, and the floating pressing plate is in its natural position. Rotate the rotating telescopic component and adjust its length. After the floating pressing plate abuts against the wind turbine blade, continuously adjust the length and angle of the rotating telescopic component. The wind turbine blade will exert an external pressure on the floating pressing plate, and the floating pressing plate will start to float. When adjusting the length and angle of the rotating telescopic component so that the pressure of the wind turbine blade on the floating pressing plate reaches the required level, the floating pressing plate will stop floating and remain stable. In this way, the wind turbine blade is stabilized, and then the two lifting components are started to lift the wind turbine blade to the installation position, and the operator installs the wind turbine blade. In this way, the installation of the wind turbine blade is completed. Then, rotate the rotating telescopic component again and adjust its length so that the floating pressing plate moves away from the wind turbine blade. In this way, the external pressure on the floating pressing plate is reduced, and the floating pressing plate floats back to its original state. By setting the floating pressing plate, it is used for the positioning and fixing of the wind turbine blade to ensure the correct position of the wind turbine blade during the assembly process. And when clamping the wind turbine blade, the floating pressing plate can help control the clamping force to ensure that the wind turbine blade is subjected to an appropriate pressure during the clamping process, and avoid the situation that the wind turbine blade is damaged due to excessive extrusion pressure. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0020] Figure 1 Schematic diagram of the overall structure of an embodiment of the hoisting device provided by the present invention;

[0021] Figure 2 Schematic diagram of the overall structure of another perspective of an embodiment of the hoisting device provided by the present invention;

[0022] Figure 3 Schematic diagram of the structure of an embodiment of the floating pressing plate provided by the present invention.

[0023] Description of the attached reference numerals:

[0024] 100, lifting device; 1, base; 2, lifting mechanism; 3, pressing mechanism; 21, lifting component; 31, rotating and telescopic component; 32, floating pressing plate; 321, first substrate; 322, second substrate; 323, elastic member; 324, telescopic rod; 325, abutting plate; 322a, telescopic hole; 326, guide rod; 327, locking nut; 311, electro-hydraulic push rod; 312, telescopic sub-component; 312a, bushing; 312b, extending rod; 4, electric control cabinet.

[0025] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] Currently, the hoisting of wind turbine blades generally involves lifting the wind turbine blades with a sling, then pressing the blades tightly with a pressing plate, or directly clamping the blades with two clamping plates, and then transporting the two clamping plates to the installation position. However, in this method, when clamping the wind turbine blades, the pressure of the pressing plate on the wind turbine blades cannot be controlled. If the pressure is too high, the wind turbine blades may be damaged; if the pressure is too low, the wind turbine blades cannot be clamped tightly, resulting in the wind turbine blades falling during hoisting.

[0030] Please refer to Figures 1 to 3 , the present utility model provides a hoisting device 100, which includes a base 1, a hoisting mechanism 2 and a pressing mechanism 3. The hoisting mechanism 2 includes a sling and two lifting components 21 spaced apart on the base 1. The two ends of the sling are respectively connected to the traction ends of the two lifting components 21, and the sling is used to place the wind turbine blades. The pressing mechanism 3 includes a rotating and telescoping component 31 and a floating pressing plate 32. One end of the rotating and telescoping component 31 is rotatably installed on the base 1, and the floating pressing plate 32 is rotatably connected to the other end of the rotating and telescoping component 31. The floating pressing plate 32 is used to abut against the wind turbine blades. When hoisting the wind turbine blades is required, then connect the two ends of the sling to the two lifting components 21 respectively, place the wind turbine blades on the sling. When the floating pressing plate 32 does not abut against the wind turbine blades, there is no external pressure, and the floating pressing plate 32 is in its natural position. Rotate the rotating and telescoping component 31 and adjust the length of the rotating and telescoping component 31 so that after the floating pressing plate 32 abuts against the wind turbine blades, continuously adjust the length and angle of the rotating and telescoping component 31. The wind turbine blades will apply an external pressure to the floating pressing plate 32, and the floating pressing plate 32 will start to float. When adjusting the length and angle of the rotating and telescoping component 31 so that the pressure of the wind turbine blades on the floating pressing plate 32 reaches the required level, the floating pressing plate 32 will no longer float and remain stable. In this way, it cooperates with the sling to fix the wind turbine blades, and then start the two lifting components to lift the wind turbine blades to the installation position, and the operator installs the wind turbine blades. In this way, the installation of the wind turbine blades is completed. Then rotate the rotating and telescoping component 31 again and adjust the length of the rotating and telescoping component 31 so that the floating pressing plate 32 moves away from the wind turbine blades. In this way, the external pressure received by the floating pressing plate 32 is reduced, and the floating pressing plate 32 floats back to its original state. By setting the floating pressing plate 32, it can cooperate with the sling to position and fix the wind turbine blades together, ensure that the wind turbine blades are in the correct installation position during the assembly process, and when clamping the wind turbine blades, the floating pressing plate 32 can help control the clamping force, ensure that the wind turbine blades receive appropriate pressure during the clamping process, and avoid the situation of the wind turbine blades being crushed due to excessive pressure.

[0031] Further, the lifting component 21 can be an electric hoist, a manual hoist, or other lifting equipment.

[0032] Furthermore, the number of the hoisting mechanisms 2 and the pressing mechanisms 3 can be multiple. The multiple hoisting mechanisms 2 are arranged at intervals along the direction perpendicular to the connecting line between the two lifting components 21 in one hoisting mechanism 2. The multiple hoisting mechanisms 2 correspond to the multiple pressing mechanisms 3 one by one, so that multiple fan blades can be hoisted simultaneously to achieve rapid installation of the fan blades; alternatively, a larger fan blade can be placed on multiple slings, and then the pressing mechanisms 3 corresponding to the hoisting mechanisms 2 one by one are operated to press each position of the fan blade, so that the hoisting of the larger fan blade can be achieved.

[0033] Please refer to Figures 1 to 3, in one embodiment, the floating pressure plate 32 includes a first substrate 321, a second substrate 322, an elastic member 323, a telescopic rod 324 and a contact plate 325. The first substrate 321 is rotatably connected to the rotating and telescopic member 31. The telescopic rod 324 is installed on the first substrate 321. The second substrate 322 is formed with a telescopic hole 322a. One end of the telescopic rod 324 away from the first substrate 321 is telescopically installed in the telescopic hole 322a. The contact plate 325 is connected to the side of the second substrate 322 facing away from the first substrate 321. Two ends of the elastic member 323 are respectively connected to the first substrate 321 and the second substrate 322. Specifically, when it is necessary to hoist the wind turbine blade, the two ends of the sling are respectively connected to the two lifting members 21, and the wind turbine blade is placed on the sling. When the floating pressure plate 32 is not in contact with the wind turbine blade, there is no external pressure, and the floating pressure plate 32 is in its natural position. Rotate the rotating and telescopic member 31 and adjust the length of the rotating and telescopic member 31 so that the contact plate 325 in the floating pressure plate 32 is in contact with the wind turbine blade. Then continuously adjust the length and angle of the rotating and telescopic member 31. The wind turbine blade will apply an external pressure to the floating pressure plate 32. Since the contact plate 325 is connected to the second substrate 322, it will push the second substrate 322 to move towards the first substrate 321, and the telescopic rod 324 will extend out of the telescopic hole 322a. Since the distance between the first substrate 321 and the second substrate 322 decreases, the elastic member 323 will be compressed, and the elastic member 323 will apply an elastic force to the wind turbine blade. When adjusting the length and angle of the rotating and telescopic member 31 so that the pressure of the wind turbine blade on the floating pressure plate 32 reaches the required level, the elastic force of the elastic member 323 and the external pressure reach an equilibrium state, and the contact plate 325 will be stabilized at a certain position and maintain the pressure, thereby stabilizing the wind turbine blade. Then start the two lifting members 21 to hoist the wind turbine blade to the installation position, and the operator installs the wind turbine blade, thus completing the installation of the wind turbine blade. Then rotate the rotating and telescopic member 31 again and adjust the length of the rotating and telescopic member 31 so that the contact plate 325 is away from the wind turbine blade. In this way, the external pressure received by the contact plate 325 decreases, and the elastic member 323 will drive the second substrate 322 and the contact plate 325 to move away from the first substrate 321, and the telescopic rod 324 will retract into the telescopic hole 322a until the elastic member 323 returns to its original state, so that the wind turbine blade can be separated from the hoisting device 100; through the elastic member 323, automatic pressure adjustment can be achieved and automatic pressure relief can be realized. Just by making the contact plate 325 away from the wind turbine blade, automatic pressure relief of the floating pressure plate 32 can be realized, ensuring that the floating pressure plate 32 will not be damaged due to long-term pressure, and there is no need for the operator to manually relieve the pressure.

[0034] Please refer to Figures 1 to 3, in one embodiment, the floating pressure plate 32 further includes a guide rod 326, the second substrate 322 is further formed with a guide hole, one end of the guide rod 326 is installed on the first substrate 321, the other end of the guide rod 326 is telescopically installed in the guide hole, and the elastic member 323 is sleeved on the guide rod 326. When it is necessary to hoist the wind turbine blade, the operator starts the two lifting components 21, moves the two lifting components 21 to a suitable distance, then connects the two ends of the sling to the two lifting components 21 respectively, places the wind turbine blade on the sling. When the floating pressure plate 32 is not in contact with the wind turbine blade, there is no external pressure, and the floating pressure plate 32 is in its natural position. Rotate the telescopic component 31 and adjust the length of the telescopic component 31. After the abutting plate 325 in the floating pressure plate 32 abuts against the wind turbine blade, continuously adjust the length and angle of the telescopic component 31, and the wind turbine blade will apply an external pressure to the floating pressure plate 32. Since the abutting plate 325 is connected to the second substrate 322, the second substrate 322 will be pushed towards the first substrate 321, and the telescopic rod 324 will extend out of the telescopic hole 322a. Since the distance between the first substrate 321 and the second substrate 322 decreases, the guide rod 326 extends out of the guide hole, and the elastic member 323 is compressed. The elastic member 323 will apply an elastic force to the wind turbine blade. When adjusting the length and angle of the telescopic component 31 so that the pressure of the wind turbine blade on the floating pressure plate 32 reaches the required level, the elastic force of the elastic member 323 and the external pressure reach an equilibrium state, and the abutting plate 325 will be stabilized at a certain position and maintain the pressure, thereby stabilizing the wind turbine blade; by setting the guide rod 326, during the compression process of the elastic member 323, it is ensured that the elastic member 323 will not shift, thus avoiding the failure of the elastic member 323, and ensuring that the second substrate 322 can move along the length direction of the guide rod 326 without shifting.

[0035] Please refer to Figures 1 to 3 , in one embodiment, the number of the elastic members 323 is multiple, the number of the guide rods 326 is multiple, and the number of the guide holes is multiple. The number of the multiple guide rods 326, the number of the multiple guide holes, and the number of the multiple elastic members 323 are equal and are arranged in one-to-one correspondence. By setting multiple elastic members 323, the adjustable pressure range of the entire floating pressure plate 32 can be improved, and by setting multiple guide rods 326, it can be ensured that each elastic member 323 will not shift during the compression process, and further ensure that the second substrate 322 can move along the length direction of the guide rod 326.

[0036] Please refer to Figures 1 to 3, in one embodiment, the floating pressure plate 32 further includes two lock nuts 327. External threads are formed at both ends of the guide rod 326, which respectively extend out of the first substrate 321 and the second substrate 322, and the two lock nuts 327 are respectively installed at both ends of the guide rod 326. The two ends of the guide rod 326 respectively extend out of the first substrate 321 and the second substrate 322. Then, one of the lock nuts 327 is tightened at the end of the guide rod 326 extending out of the first substrate 321, and the lock nut 327 abuts against the first substrate 321. Then, the other lock nut 327 is tightened at the end of the guide rod 326 extending out of the second substrate 322, and this lock nut 327 abuts against the second substrate 322. In this way, when the second substrate 322 is in its normal state, the second substrate 322 will be supported by the lock nut 327, so that the second substrate 322 will not fall off. And through such a setting, the operator can realize the quick disassembly and installation of the guide rod 326 and the second substrate 322.

[0037] Please refer to Figures 1 to 3 , in one embodiment, the rotating and telescoping member 31 includes an electro-hydraulic push rod 311 and a telescoping sub-member 312. The cylinder block of the electro-hydraulic push rod 311 is rotatably connected to the base 1, the extending shaft of the electro-hydraulic push rod 311 is rotatably connected to the telescoping sub-member 312, and both ends of the telescoping sub-member 312 are respectively rotatably connected to the base 1 and the floating pressure plate 32. Specifically, when the floating pressure plate 32 is not in contact with the wind turbine blade, there is no external pressure, and the floating pressure plate 32 is in its natural position. When the electro-hydraulic push rod 311 is started, the extending shaft of the electro-hydraulic push rod 311 will extend, thereby driving the cylinder block and the extending shaft of the electro-hydraulic push rod 311 to rotate, which will push the telescoping sub-member 312 to move, making the floating pressure plate 32 approach the wind turbine blade until the floating pressure plate 32 is in contact with the wind turbine blade. The wind turbine blade will apply an external pressure to the floating pressure plate 32. If the extending shaft of the electro-hydraulic push rod 311 continues to extend, the floating pressure plate 32 will start to float. When the length of the extending shaft of the electro-hydraulic push rod 311 makes the pressure of the wind turbine blade on the floating pressure plate 32 reach the required level, the floating pressure plate 32 will stop floating and remain stable, so as to cooperate with the sling to fix the wind turbine blade; by setting the electro-hydraulic push rod 311, the position of the floating pressure plate 32 can be automatically adjusted. And the integrated electro-hydraulic push rod has a simple structure, strong expandability and low use cost.

[0038] Further, a driving motor can also be used. The cylinder block of the driving motor is rotatably connected to the base 1, the extending shaft of the driving motor is rotatably connected to the telescoping sub-member 312, and both ends of the telescoping sub-member 312 are respectively rotatably connected to the base 1 and the floating pressure plate 32; the electric push rod has no risk of oil leakage, is more environmentally friendly; and has higher energy efficiency and is more economical for long-term use.

[0039] Please refer to Figures 1 to 3, in one embodiment, the telescopic sub-component 312 includes a bushing 312a and a protruding rod 312b. The protruding rod 312b is telescopically installed in the bushing 312a. One end of the protruding rod 312b away from the bushing 312a is rotatably connected to the floating pressure plate 32, and one end of the bushing 312a away from the protruding rod 312b is rotatably connected to the base 1. Specifically, when the protruding shaft of the electro-hydraulic push rod 311 cannot make the pressure of the fan blade on the floating pressure plate 32 reach the required level, the operator extends the protruding rod 312b in the bushing 312a. In this way, the distance between the floating pressure plate 32 and the fan blade is smaller. Then, when the protruding shaft of the electro-hydraulic push rod 311 extends, it drives the cylinder body and the protruding shaft of the electro-hydraulic push rod 311 to rotate, which will push the telescopic sub-component 312 to move, making the floating pressure plate 32 approach the fan blade until the floating pressure plate 32 abuts against the fan blade. The fan blade will apply an external pressure to the floating pressure plate 32. Continuing to extend the protruding shaft of the electro-hydraulic push rod 311, the floating pressure plate 32 starts to float, making the pressure of the fan blade on the floating pressure plate 32 reach the required level. In this way, it cooperates with the sling to fix the fan blade; through such a setting, it can quickly adjust the distance between the floating pressure plate 32 and the fan blade, so that the hoisting device 100 can adapt to fan blades of various sizes.

[0040] Please refer to Figures 1 to 3 , in one embodiment, the bushing 312a is formed with a first mounting hole, and the protruding rod 312b is formed with a second mounting hole. The number of both the first mounting hole and the second mounting hole is multiple. The telescopic sub-component 312 further includes a fastener, and the fastener is installed in one of the second mounting holes through one of the first mounting holes. When the extended length of the protruding rod 312b meets the use requirements, there is a situation where the positions of the first mounting hole and the second mounting hole correspond. The operator passes the fastener through the first mounting hole and locks it in the second mounting hole, thus completing the fixation between the bushing 312a and the protruding rod 312b. When it is necessary to adjust the extended length of the protruding rod 312b, only the fastener needs to be disassembled. The operator can push the protruding rod 312b to extend or retract, then select a suitable length, and then pass the fastener through the first mounting hole and lock it in the second mounting hole to fix the protruding rod 312b and the bushing 312a; through such a setting, it can achieve the quick installation and disassembly between the bushing 312a and the protruding rod 312b, and can quickly realize the extension or retraction of the protruding rod 312b.

[0041] Please refer to Figures 1 to 3 , in one embodiment, the hoisting device 100 further includes an electric control cabinet 4. A battery pack is arranged in the electric control cabinet 4, and the battery pack is electrically connected to the electro-hydraulic push rod 311. Powered by the battery pack, the electro-hydraulic push rod 311 is driven to start. When the power is insufficient, the battery pack can be charged or directly replaced, which greatly reduces the maintenance cost and the use cost.

[0042] Please refer toFigures 1 to 3 In one embodiment, the hoisting device 100 further includes a pressure sensor and a control device. The pressure sensor is disposed on one side of the floating pressing plate 32 for abutting against the wind turbine blade. Both the pressure sensor and the electro-hydraulic push rod 311 are in signal connection with the control device. After the floating pressing plate 32 abuts against the wind turbine blade, the pressure sensor measures the pressure generated by the wind turbine blade on the floating pressing plate 32 and feeds it back to the control system, and then drives the electro-hydraulic push rod 311 to operate until the pressure received by the floating pressing plate 32 reaches equilibrium with the internal pressure; in this way, dynamic perception of the pressure can be achieved.

[0043] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A lifting device, characterized in that: include: Base (1); A lifting mechanism (2), the lifting mechanism (2) comprising a lifting belt and two lifting components (21) arranged at intervals on the base (1), the two ends of the lifting belt being respectively connected to the traction ends of the two lifting components (21), and the lifting belt being used for placing the fan blades; A clamping mechanism (3), the clamping mechanism (3) comprising a rotating telescopic component (31) and a floating pressure plate (32), one end of the rotating telescopic component (31) being rotatably mounted on the base (1), the floating pressure plate (32) being rotatably connected to the other end of the rotating telescopic component (31), and the floating pressure plate (32) being used to abut against the fan blades.

2. The lifting device according to claim 1, characterized in that: The floating pressure plate (32) comprises a first substrate (321), a second substrate (322), an elastic member (323), a telescopic rod (324) and an abutment plate (325); the first substrate (321) is rotatably connected to the rotating telescopic component (31); the telescopic rod (324) is mounted on the first substrate (321); a telescopic hole (322a) is formed on the second substrate (322); one end of the telescopic rod (324) away from the first substrate (321) is telescopically mounted in the telescopic hole (322a); the abutment plate (325) is connected to a side of the second substrate (322) away from the first substrate (321); and two ends of the elastic member (323) are respectively connected to the first substrate (321) and the second substrate (322).

3. The lifting device according to claim 2, characterized in that: The floating pressure plate (32) further comprises a guide rod (326), the second base plate (322) further forms a guide hole, one end of the guide rod (326) is mounted on the first base plate (321), the other end of the guide rod (326) is telescopically mounted on the guide hole, and the elastic member (323) is sleeved on the guide rod (326).

4. The lifting device according to claim 3, characterized in that: The number of the elastic members (323) is multiple, the number of the guide rods (326) is multiple, and the number of the guide holes is multiple. The number of the guide rods (326), the guide holes, and the elastic members (323) are equal and are arranged in one-to-one correspondence.

5. The lifting device according to claim 3, characterized in that: The floating pressure plate (32) further comprises a locking nut (327), the number of the locking nuts (327) being two, both ends of the guide rod (326) being formed with external threads and respectively extending out of the first substrate (321) and the second substrate (322), and the two locking nuts (327) being respectively mounted on the two ends of the guide rod (326).

6. The lifting device according to claim 1, characterized in that: The rotating telescopic component (31) comprises an electro-hydraulic push rod (311) and a telescopic sub-component (312); the cylinder body of the electro-hydraulic push rod (311) is rotatably connected to the base (1); the extension shaft of the electro-hydraulic push rod (311) is rotatably connected to the telescopic sub-component (312); and the two ends of the telescopic sub-component (312) are rotatably connected to the base (1) and the floating pressure plate (32), respectively.

7. The lifting device according to claim 6, characterized in that: The telescopic subcomponent (312) comprises a shaft sleeve (312a) and an extension rod (312b), wherein the extension rod (312b) is telescopically mounted on the shaft sleeve (312a), wherein one end of the extension rod (312b) away from the shaft sleeve (312a) is rotatably connected to the floating pressure plate (32), and one end of the shaft sleeve (312a) away from the extension rod (312b) is rotatably connected to the base (1).

8. The lifting device according to claim 7, characterized in that: The shaft sleeve (312a) is formed with a first mounting hole, and the extension rod (312b) is formed with a second mounting hole. The first mounting hole and the second mounting hole are both multiple in number. The telescopic subcomponent (312) also includes a fastener, and the fastener passes through one of the first mounting holes and is installed in one of the second mounting holes.

9. The lifting device according to any one of claims 6 to 8, characterized in that: The hoisting device further comprises an electric control cabinet (4), wherein a battery pack is arranged in the electric control cabinet (4), and the battery pack is electrically connected to the electro-hydraulic push rod (311).

10. The lifting device according to any one of claims 6 to 8, characterized in that: The hoisting device also includes a pressure sensor and a control device. The pressure sensor is arranged on a side of the floating pressure plate (32) for contacting the fan blades. The pressure sensor and the electro-hydraulic push rod (311) are both connected to the control device by signal.

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