Supporting equipment for integral hoisting maintenance of fan blade

Abstract

The supporting equipment for integral hoisting maintenance of the fan blade comprises a base, the top of the base is fixedly connected with a heavy hydraulic oil cylinder, and the telescopic end of the heavy hydraulic oil cylinder is fixedly connected with a fan blade placing plate. According to the utility model, the force for driving the bidirectional reciprocating screw rod to rotate by the motor is matched with the limiting guide rod, the displacement sliding block, the rotating rod and other components in the adjusting device, so that when the fan blade needs to be maintained, the motor is reversely driven to enable the bidirectional reciprocating screw rod to reversely rotate; the fan blade placing plate can drive the fan blade to move downwards, the effect of adjusting the height of the fan blade is achieved, maintenance is convenient, the fan blade can be accurately positioned in the hoisting or maintaining process, errors possibly caused by manual adjustment are avoided, maintenance personnel can rapidly position and adjust the position of the blade, and the maintenance efficiency is improved. And waiting and preparation time is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine blade technology, and in particular relates to a support device for the overall hoisting and maintenance of wind turbine blades. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. A wind turbine typically consists of components such as wind turbine blades, a generator (including the generator assembly), a steering deflector (tail fin), a tower, a speed-limiting safety mechanism, and an energy storage device.

[0003] A wind turbine blade consists of an outer casing, a web, a beam cap, a rain guard, and a manhole cover. The outer casing comprises two halves of the blade and typically has a complex aerodynamic design. The web, also called the internal beam, primarily supports the blade outer casing and bears the bending loads on the blade. The web often uses an I-beam structure to reduce weight. The beam cap connects the web and the blade outer casing. The rain guard is installed at the blade root to prevent rainwater from entering the wind turbine. The manhole cover connects the blade to the wind turbine's main shaft.

[0004] However, current on-site investigations have revealed that wind turbine blades, being constantly exposed to the elements, are prone to rusting due to rain and snow. Rust on the blades weakens their load-bearing capacity, directly impacting the lifespan of the wind turbine. Therefore, rusted blades are typically ground and derusted during major overhauls.

[0005] Because the fan blades are relatively large and heavy, it is difficult to adjust their height manually, and it is also difficult to quickly locate and adjust their position. This makes maintenance, grinding, and rust removal difficult, and therefore needs to be improved. Utility Model Content

[0006] A support device for the overall hoisting and maintenance of wind turbine blades is provided. The force of the bidirectional reciprocating screw driven by the motor cooperates with the limit guide rod, displacement slider and rotating rod in the adjustment device. When the wind turbine blade needs maintenance, the reverse drive motor makes the bidirectional reciprocating screw rotate in the opposite direction, and the wind turbine blade placement plate can drive the wind turbine blade to move downward. This solves the existing problems.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model is a support device for the overall hoisting and maintenance of wind turbine blades, including a base, a heavy-duty hydraulic cylinder fixedly connected to the top of the base, a wind turbine blade placement plate fixedly connected to the telescopic end of the heavy-duty hydraulic cylinder, wind turbine blades set on the top of the wind turbine blade placement plate, a hoisting robotic arm set on the top of the wind turbine blade placement plate, and a guardrail fixedly connected to the top of the wind turbine blade placement plate.

[0009] An adjustment device is provided on the top of the base. The adjustment device includes a motor fixing plate, which is fixedly connected to the top of the base. A motor is fixedly connected to the side of the motor fixing plate. A bidirectional reciprocating lead screw is fixedly connected to the output shaft of the motor. A displacement slider is threaded to the circumferential surface of the bidirectional reciprocating lead screw. A rotating rod is rotatably connected to the side of the displacement slider. A hinged support block is rotatably connected to the end of the rotating rod away from the displacement slider.

[0010] Furthermore, the top of the hinged support block is fixedly connected to the bottom of the fan blade placement plate, and a limit guide rod runs through the side of the displacement slider. One end of the limit guide rod is fixedly connected to the side of the motor mounting plate. The limit guide rod is used to restrict the displacement slider, preventing accidents caused by excessive movement or mechanical failure, making the operation process safer.

[0011] Furthermore, a mounting plate is fixedly connected to the bottom of the wind turbine blade placement plate, a support plate is fixedly connected to the top of the base, a hydraulic cylinder is fixedly connected to the side of the support plate, a force-bearing rod is slidably connected to one end of the hydraulic cylinder via a piston, a hydraulic rod is slidably connected to the other end of the hydraulic cylinder via a piston, a positioning block is fixedly connected to one end of the hydraulic rod, a rectangular plate is fixedly connected to the top of the base, a protective shell is fixedly connected to the side of the rectangular plate, a support rod runs through the side of the protective shell, a mounting block is fixedly connected to one end of the support rod, and a disc is fixedly connected to the other end of the support rod.

[0012] Furthermore, a spring is fixedly connected to the side of the hydraulic cylinder. The end of the spring away from the hydraulic cylinder is fixedly connected to the circumferential surface of the force-bearing rod. The initial state of the spring is a relaxed state. The design of the spring helps the force-bearing rod to automatically reset, reducing manual intervention.

[0013] Furthermore, a return spring is fixedly connected to the side of the protective shell. The end of the return spring away from the protective shell is fixedly connected to the circumferential surface of the support rod. The initial state of the return spring is a relaxed state. The design of the return spring allows the mounting block to automatically reset. The positioning block will be inserted into the interior of the mounting block to lock the position between the mounting plate and the fan blade placement plate, preventing the fan blade placement plate from continuing to move upward.

[0014] Furthermore, the side of the positioning block is set as an inclined plane, the side of the mounting block is set as an inclined plane, and the mounting block is located on the motion estimation of the positioning block. The above design enables the positioning block to lock the mounting block in the appropriate position, avoiding frequent manual adjustment.

[0015] Furthermore, the number of rotating rods is set to several, in pairs, and symmetrical to each other along the vertical central axis of the bidirectional reciprocating screw. The height of the wind turbine blades can be precisely controlled through the interaction of the displacement slider and the rotating rods.

[0016] This utility model has the following beneficial effects:

[0017] This invention utilizes the force of a motor-driven bidirectional reciprocating screw to rotate in conjunction with components such as a limit guide rod, displacement slider, and rotating rod in the adjustment device. When the wind turbine blades require maintenance, the reverse drive motor causes the bidirectional reciprocating screw to rotate in the opposite direction, which in turn moves the wind turbine blade placement plate downwards, thus adjusting the height of the wind turbine blades. This facilitates maintenance and allows for precise positioning of the wind turbine blades during hoisting or maintenance, avoiding errors that may occur with manual adjustments. Maintenance personnel can quickly locate and adjust the blade positions, reducing waiting and preparation time.

[0018] This invention utilizes the inward displacement of the force rod to compress the piston inside the hydraulic cylinder, in conjunction with components such as the rectangular plate, mounting plate, and mounting block in the adjustment device. When the positioning block moves into the interior of the mounting block, the mounting block is reset by the elastic force of the return spring, and the positioning block is locked inside the mounting block. At this time, the hydraulic rod is locked in the groove on the side of the mounting plate, thus fixing the mounting plate and the wind turbine blade placement plate. This prevents instability caused by the wind turbine blade placement plate being too high, increasing the stability of the device and ensuring the safety and stability of the equipment during wind turbine blade hoisting and maintenance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional top view of the structure of this utility model;

[0020] Figure 2 This is a three-dimensional bottom view schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the top structure of the base 101 of this utility model;

[0022] Figure 4 This is a schematic diagram of the surrounding structure of the bidirectional reciprocating lead screw 203 of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the adjusting device 2 of this utility model;

[0024] Figure 6 This is a three-dimensional bottom view structural diagram of Embodiment 2 of this utility model;

[0025] Figure 7 This is a schematic diagram of the top structure of the base 101 in Embodiment 2 of this utility model;

[0026] Figure 8 This is a schematic diagram of the structure surrounding the hydraulic cylinder 209 in Embodiment 2 of this utility model;

[0027] Figure 9 This is a schematic diagram of the surrounding structure of the positioning block 213 in Embodiment 2 of this utility model.

[0028] Attached Figures: 101 Base; 102 Fan blade mounting plate; 103 Fan blade; 104 Lifting robotic arm; 105 Heavy-duty hydraulic cylinder; 106 Guardrail; 2 Adjustment device; 201 Motor mounting plate; 202 Motor; 203 Bidirectional reciprocating screw; 204 Displacement slider; 205 Rotating rod; 206 Hinge support block; 207 Limiting guide rod; 208 Support plate; 209 Hydraulic cylinder; 210 Force-bearing rod; 211 Spring; 212 Hydraulic rod; 213 Positioning block; 214 Mounting plate; 215 Rectangular plate; 216 Protective shell; 217 Support rod; 218 Mounting block; 219 Return spring; 220 Disc. Detailed Implementation Example 1

[0029] A support device for the overall hoisting and maintenance of wind turbine blades includes a base 101, a heavy-duty hydraulic cylinder 105 fixedly connected to the top of the base 101, a wind turbine blade placement plate 102 fixedly connected to the telescopic end of the heavy-duty hydraulic cylinder 105, a wind turbine blade 103 disposed on the top of the wind turbine blade placement plate 102, a hoisting robotic arm 104 disposed on the top of the wind turbine blade placement plate 102, and a guardrail 106 fixedly connected to the top of the wind turbine blade placement plate 102.

[0030] An adjustment device 2 is provided on the top of the base 101. The adjustment device 2 includes a motor fixing plate 201, which is fixedly connected to the top of the base 101. A motor 202 is fixedly connected to the side of the motor fixing plate 201. A bidirectional reciprocating lead screw 203 is fixedly connected to the output shaft of the motor 202. A displacement slider 204 is threadedly connected to the circumferential surface of the bidirectional reciprocating lead screw 203. A rotating rod 205 is rotatably connected to the side of the displacement slider 204. A hinged support block 206 is rotatably connected to the end of the rotating rod 205 away from the displacement slider 204.

[0031] Furthermore, the top of the hinged support block 206 is fixedly connected to the bottom of the fan blade placement plate 102, and the side of the displacement slider 204 is penetrated by a limit guide rod 207. One end of the limit guide rod 207 is fixedly connected to the side of the motor fixing plate 201. The limit guide rod 207 is used to restrict the displacement slider 204, preventing accidents caused by excessive movement or mechanical failure, making the operation process safer.

[0032] Furthermore, the number of rotating rods 205 is set to several, in pairs, and symmetrical to each other along the vertical central axis of the bidirectional reciprocating screw 203. The height of the fan blade 103 can be precisely controlled by the interaction between the displacement slider 204 and the rotating rods 205.

[0033] One specific application of this embodiment is:

[0034] This application uses a hoisting robotic arm 104 to disassemble the fan blades 103. During this process, the drive motor 202 drives the bidirectional reciprocating screw 203 to rotate. The rotation of the bidirectional reciprocating screw 203 then drives two displacement sliders 204 to move in opposite directions. The displacement of the displacement sliders 204 drives the rotating rod 205 to rotate. The displacement slider 204 is limited by the limiting guide rod 207 on its side. The rotation of the rotating rod 205 then drives the hinged support block 206 to move upwards. The displacement of the hinged support block 206 drives the fan blade placement plate 102 to move upwards. The upward movement of the fan blade placement plate 102 then drives the fan blades 103 to move upwards. When the fan blades 103 require maintenance, the reverse drive motor 202 causes the bidirectional reciprocating screw 203 to rotate in the opposite direction. This allows the fan blade placement plate 102 to move the fan blades 103 downwards, enabling fine adjustment of the height of the fan blades 103 and facilitating maintenance by personnel. Example 2

[0035] A support device for the overall hoisting and maintenance of wind turbine blades, based on Embodiment 1, has an installation plate 214 fixedly connected to the bottom of the wind turbine blade placement plate 102, a support plate 208 fixedly connected to the top of the base 101, a hydraulic cylinder 209 fixedly connected to the side of the support plate 208, a force-bearing rod 210 slidably connected to one end of the hydraulic cylinder 209 via a piston, a hydraulic rod 212 slidably connected to the other end of the hydraulic cylinder 209 via a piston, a positioning block 213 fixedly connected to one end of the hydraulic rod 212, a rectangular plate 215 fixedly connected to the top of the base 101, a protective shell 216 fixedly connected to the side of the rectangular plate 215, a support rod 217 penetrating through the side of the protective shell 216, an installation block 218 fixedly connected to one end of the support rod 217, and a disc 220 fixedly connected to the other end of the support rod 217.

[0036] Furthermore, a spring 211 is fixedly connected to the side of the hydraulic cylinder 209. The end of the spring 211 away from the hydraulic cylinder 209 is fixedly connected to the circumferential surface of the force-bearing rod 210. The initial state of the spring 211 is a relaxed state. The design of the spring 211 is conducive to the automatic reset of the force-bearing rod 210, reducing manual intervention.

[0037] Furthermore, a return spring 219 is fixedly connected to the side of the protective shell 216. The end of the return spring 219 away from the protective shell 216 is fixedly connected to the circumferential surface of the support rod 217. The initial state of the return spring 219 is a relaxed state. The design of the return spring 219 causes the mounting block 218 to automatically reset. The positioning block 213 will be inserted into the interior of the mounting block 218 to lock the position between the mounting plate 214 and the fan blade placement plate 102, preventing the fan blade placement plate 102 from continuing to move upward.

[0038] Furthermore, the side of the positioning block 213 is set as an inclined surface, and the side of the mounting block 218 is set as an inclined surface. The mounting block 218 is located on the motion estimate of the positioning block 213. The above design enables the positioning block 213 to lock the mounting block 218 in a suitable position, avoiding frequent manual adjustment.

[0039] One specific application of this embodiment is:

[0040] When the fan blade mounting plate 102 is displaced too high, it will press against the force rod 210, causing it to move inward and press against the piston inside the hydraulic cylinder 209. The piston inside the hydraulic cylinder 209 pushes the liquid inside, which in turn pushes another piston to move. This piston then pushes the hydraulic rod 212 to move, which in turn pushes the positioning block 213 to move. When the positioning block 213 moves to the side of the mounting block 218, its inclined surface will press against the inclined surface of the mounting block 218. When the positioning block 213 is displaced by compression, the return spring 219 on the side of the mounting block 218 is compressed. When the positioning block 213 is displaced into the interior of the mounting block 218, the mounting block 218 is reset by the elastic force of the return spring 219, and the positioning block 213 can be locked inside the mounting block 218. At this time, the hydraulic rod 212 is locked in the groove on the side of the mounting plate 214, which can fix the mounting plate 214 and the fan blade placement plate 102. The fan blade placement plate 102 cannot continue to move upward, which prevents the fan blade placement plate 102 from being too high and causing the device to be unstable, thus increasing the stability of the device.

Claims

1. A support device for the overall hoisting and maintenance of wind turbine blades, comprising a base (101), characterized in that: A heavy-duty hydraulic cylinder (105) is fixedly connected to the top of the base (101). A fan blade placement plate (102) is fixedly connected to the telescopic end of the heavy-duty hydraulic cylinder (105). A fan blade (103) is provided on the top of the fan blade placement plate (102). A hoisting robotic arm (104) is provided on the top of the fan blade placement plate (102). A guardrail (106) is fixedly connected to the top of the fan blade placement plate (102). An adjustment device (2) is provided on the top of the base (101). The adjustment device (2) includes a motor. The fixed plate (201) is fixedly connected to the top of the base (101). The motor (202) is fixedly connected to the side of the motor (201). The output shaft of the motor (202) is fixedly connected to a bidirectional reciprocating screw (203). The circumferential surface of the bidirectional reciprocating screw (203) is threaded with a displacement slider (204). The side of the displacement slider (204) is rotatably connected to a rotating rod (205). The end of the rotating rod (205) away from the displacement slider (204) is rotatably connected to a hinged support block (206).

2. The support equipment for the overall hoisting and maintenance of wind turbine blades according to claim 1, characterized in that, The top of the hinged support block (206) is fixedly connected to the bottom of the fan blade placement plate (102), and the side of the displacement slider (204) is penetrated by a limit guide rod (207). One end of the limit guide rod (207) is fixedly connected to the side of the motor fixing plate (201).

3. The support equipment for the overall hoisting and maintenance of wind turbine blades according to claim 1, characterized in that, The number of rotating rods (205) is set to several, in pairs, and they are symmetrical to each other along the vertical central axis of the bidirectional reciprocating screw (203).

4. The support equipment for the overall hoisting and maintenance of wind turbine blades according to claim 1, characterized in that, A mounting plate (214) is fixedly connected to the bottom of the fan blade placement plate (102). A support plate (208) is fixedly connected to the top of the base (101). A hydraulic cylinder (209) is fixedly connected to the side of the support plate (208). A force rod (210) is slidably connected to one end of the hydraulic cylinder (209) via a piston. A hydraulic rod (212) is slidably connected to the other end of the hydraulic cylinder (209) via a piston. A positioning block (213) is fixedly connected to one end of the hydraulic rod (212). A rectangular plate (215) is fixedly connected to the top of the base (101). A protective shell (216) is fixedly connected to the side of the rectangular plate (215). A support rod (217) passes through the side of the protective shell (216). A mounting block (218) is fixedly connected to one end of the support rod (217). A disc (220) is fixedly connected to the other end of the support rod (217).

5. A support device for the overall hoisting and maintenance of wind turbine blades according to claim 4, characterized in that, A spring (211) is fixedly connected to the side of the hydraulic cylinder (209). The end of the spring (211) away from the hydraulic cylinder (209) is fixedly connected to the circumferential surface of the force rod (210). The initial state of the spring (211) is a relaxed state.

6. A support device for the overall hoisting and maintenance of wind turbine blades according to claim 4, characterized in that, A return spring (219) is fixedly connected to the side of the protective shell (216). The end of the return spring (219) away from the protective shell (216) is fixedly connected to the circumferential surface of the support rod (217). The initial state of the return spring (219) is a relaxed state.

7. A support device for the overall hoisting and maintenance of wind turbine blades according to claim 4, characterized in that, The side of the positioning block (213) is set as an inclined surface, the side of the mounting block (218) is set as an inclined surface, and the mounting block (218) is located on the motion estimate of the positioning block (213).

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