A fan blade lifting device

Abstract

The present application relates to a wind turbine blade hoisting device, and relates to the technical field of wind turbine blade installation, which includes a hoisting main frame, a clamping assembly, a locking assembly, and a stabilizing assembly. The clamping assembly includes a clamping arm, a double-headed oil cylinder, a clamping support plate, and a clamping portion. The locking assembly includes a locking slider, a first slide bar, a first swing arm, and a first clamp. The stabilizing assembly includes a stabilizing portion and an adjusting portion. The stabilizing portion includes a connecting frame, a stabilizing plate, a rotating slider, and a stabilizing clamping plate. The adjusting portion includes an adjusting oil cylinder. When a single blade is hoisted at high altitude, the first clamp can be clamped into a first locking slot provided on the clamping arm under the action of the gravity of the single blade. When a single blade is installed at high altitude, the stabilizing slot provided on the stabilizing plate can limit the separation of the two stabilizing clamping plates, so that the two clamping arms and the two clamping support plates can be clamped on the single blade under mechanical locking. The present application has the effect of reducing the risk of a single blade falling when the double-headed oil cylinder and the clamping portion fail.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbine blade installation, and in particular to a wind turbine blade hoisting device. Background Art

[0002] A wind turbine mainly consists of a tower, a nacelle, a hub and three blades. The installation of the blades is a key link in the assembly of the wind turbine and also a difficult point in the assembly of the wind turbine. At present, the assembly of the blades is mainly carried out by single-blade lifting.

[0003] Existing single-blade hoists mainly use a C-shaped clamping frame in conjunction with a clamping mechanism to hoist a single blade. For example, Chinese patent publication number CN215711125U discloses a large-angle hoisting device for a single blade of a wind turbine, Chinese patent publication number CN216807782U discloses a single-blade hoist for a wind turbine, and Chinese patent publication number CN115724335A discloses a wind turbine blade hoist and control system. Although the C-shaped clamping frame cooperates with the clamping mechanism to conveniently clamp and hoist a single blade, the C-shaped clamping frame has a notch for clamping, and during high-altitude lifting and installation, the single blade is mainly fixed by the clamping force of the clamping mechanism. The single blade is easily affected by wind and shakes at high altitude. Once the clamping power of the clamping mechanism fails, the single blade will be at risk of falling. Summary of the Invention

[0004] In order to reduce the risk of a single blade falling when the clamping power of the clamping mechanism fails, the present application provides a wind turbine blade lifting device.

[0005] This application provides a wind turbine blade hoisting device that adopts the following technical solution:

[0006] A fan blade hoisting device, used for hoisting a single blade of a fan, comprising:

[0007] The main hoisting frame is used to connect with the hook of the crane;

[0008] A clamping assembly, comprising a clamping arm, a double-headed oil cylinder, a clamping support plate and a clamping portion;

[0009] A locking assembly comprising a locking slider, a first slide bar, a first swing bar and a first clamp;

[0010] The stabilizing assembly includes a stabilizing portion and an adjusting portion, wherein the stabilizing portion includes a connecting frame, a stabilizing plate, a rotating slider, and a stabilizing clamping plate;

[0011] in,

[0012] The clamping assembly is provided with more than two groups along the length direction of the single blade, and two clamping arms are symmetrically provided. The top end of the clamping arm is slidably connected to the lifting main frame, and the double-headed oil cylinder is connected to the lifting main frame. The two movable ends of the double-headed oil cylinder are respectively connected to the two clamping arms. The double-headed oil cylinder is used to drive the two clamping arms to approach each other to clamp the single blade;

[0013] There are two symmetrical clamping support plates and two clamping parts, and they correspond one to one. The clamping support plates correspond one to one with the clamping arms. The clamping parts are arranged on the clamping support plates and are used to clamp a single blade. When the two clamping arms clamp on a single blade, the two clamping support plates clamp on the single blade synchronously.

[0014] The locking assembly is provided with multiple groups, and corresponds to the clamping arms one by one. The locking slider is slidably arranged in the locking slide groove provided on the clamping arm. The locking slider is connected to the corresponding clamping support plate. The first slide bar is slidably provided on the clamping arm. One end of the first slide bar is connected to the locking slider, and the other end is slidably connected to the first swing bar. The middle part of the first swing bar is hinged on the clamping arm. The first clamp head is connected to the end of the first swing bar away from the first slide bar. When the locking slider slides under the gravity of the single blade, the first clamp head can be clamped in the first locking groove provided on the other clamping arm of the clamping assembly;

[0015] A first spring is provided between the locking slider and the clamping arm. When the locking slider is not subjected to the gravity of the single blade, the first spring can drive the locking slider to cause the first clamping head to escape from the first locking slot.

[0016] There are two groups of stabilizing components. The connecting frames of one group of stabilizing components are connected to the bottom ends of all clamping arms on one side of the hoisting main frame, and the connecting frames of the other group of stabilizing components are connected to the bottom ends of all clamping arms on the other side of the hoisting main frame.

[0017] The stabilizing plate is located below the connecting frame, and there are more than two rotating sliders, which are all connected to the connecting frame. The rotating sliders are slidably arranged in the arc-shaped rotating groove opened on the stabilizing plate. The stabilizing card is in the shape of a semicircular plate and is connected to the connecting frame. The stabilizing card is located in the middle position of the connecting frame to which it is connected, close to the other connecting frame. The stabilizing card is adapted to be clamped in the stabilizing groove opened on the stabilizing plate. After the clamping arm clamps the single blade, the two stabilizing plates are fitted together, and the two stabilizing card plates are fitted together to form a complete circular plate. The stabilizing plate can rotate around the stabilizing card plate under the guiding action of the rotating groove. The adjusting part is respectively connected to the connecting frame and the stabilizing plate, and the adjusting part is used to drive the stabilizing plate to rotate. When the two stabilizing plates rotate synchronously and in the same direction, the stabilizing groove can fix the two stabilizing card plates.

[0018] Optionally, the locking assembly further comprises a second sliding rod, a second swing rod and a second clamping head, the second sliding rod being slidably provided on the clamping arm, and one end of the second sliding rod being inserted into a first locking clamping groove provided on the clamping arm, the other end of the second sliding rod being slidably connected to the second swing rod, the middle portion of the second swing rod being hinged on the clamping arm, and the second clamping head being connected to an end of the second swing rod away from the second sliding rod;

[0019] When the second slide rod passes through the first locking slot and the first clamp head is clamped in the first locking slot, the first clamp head can drive the second slide rod to clamp the second clamp head in the second locking slot opened on the other clamping arm of the clamping assembly. A second spring is provided between the second slide rod and the clamping arm. When the first clamp head disengages from the first locking slot, the second spring can drive the second slide rod to disengage the second clamp head from the second locking slot.

[0020] Optionally, the sliding connection structure between the first sliding rod and the first rocker arm is consistent with the sliding connection structure between the second sliding rod and the second rocker arm. The first sliding rod is connected to a sliding rod, which is slidably arranged in a sliding groove opened on the first rocker arm, and the sliding direction of the sliding rod is consistent with the length direction of the first rocker arm.

[0021] Optionally, the adjusting portion includes an adjusting oil cylinder, which is rotatably connected to the connecting frame, and a movable end of the adjusting oil cylinder is rotatably connected to the stabilizing plate.

[0022] Optionally, the stabilizing assembly further includes a clamping portion, which includes a clamping plate, a first stabilizing oil cylinder, a second stabilizing oil cylinder, a clamping rod and a clamping oil cylinder. There are more than two clamping plates, all of which are arranged in a vertical direction and are parallel to the stabilizing plate. Two adjacent clamping plates are slidably connected, the topmost clamping plate is slidably connected to the stabilizing plate, and the sliding direction of the two adjacent clamping plates is parallel to the sliding direction of the clamping plate and the stabilizing plate.

[0023] The first stabilizing oil cylinder is connected to the stabilizing plate, and the movable end of the first stabilizing oil cylinder is connected to the topmost clamping plate. There is at least one second stabilizing oil cylinder, and all the second stabilizing oil cylinders are respectively arranged between two adjacent clamping plates. The second stabilizing oil cylinder is connected to the upper clamping plate, and the movable end of the second stabilizing oil cylinder is connected to the lower clamping plate.

[0024] The bottom clamping plate is provided with a clamping notch adapted to the wind turbine tower at one end close to the root of the single blade. The middle part of the clamping rod is hinged to the end of the clamping plate with the clamping notch. The clamping cylinder is hinged to the bottom clamping plate. The movable end of the clamping cylinder is hinged to the end of the clamping rod. The clamping cylinder is used to drive the clamping rod to clamp on the wind turbine tower when extended.

[0025] Optionally, the locking assembly further includes a limit plate, which is located at the notch of the locking slide and is connected to the clamping arm. The limit plate is used to limit the lowest position to which the locking slider can slide downward.

[0026] Optionally, the clamping part includes a clamping cylinder and a clamping plate. Multiple clamping cylinders are arranged along the circumference of a single blade. The clamping cylinder is connected to the clamping support plate. Multiple clamping plates are provided and are hinged one-to-one on the movable end of the clamping cylinder. The clamping cylinder is used to drive the clamping plate to press against the single blade.

[0027] Optionally, it also includes a counterweight adjustment component. Four groups of counterweight adjustment components are arranged around the lifting main frame. The counterweight adjustment component includes a counterweight arm, a counterweight cylinder and a counterweight block. One end of the counterweight arm is hinged to the lifting main frame, the counterweight cylinder is hinged to the lifting main frame, and the movable end of the counterweight cylinder is hinged to the counterweight arm. The counterweight cylinder is used to drive the counterweight arm to swing, and the counterweight block is set on the counterweight arm.

[0028] Optionally, there are multiple counterweight blocks, and the multiple counterweight blocks are slid one by one on the counterweight arm along the arm length direction of the counterweight arm. Each counterweight block is connected to a counterweight motor, and the output shaft of the counterweight motor is connected to a counterweight gear. All the counterweight gears are engaged with a counterweight rack, and the counterweight rack is connected to the counterweight arm.

[0029] Optionally, the lifting main frame includes a main hanger and a lifting platform, the main hanger is used to connect to the hook of the crane, and the lifting platform is used to connect to the clamping arm, double-head cylinder, counterweight arm and counterweight cylinder. A plurality of posture telescopic rods are arranged between the main hanger and the lifting platform, and the plurality of posture telescopic rods are arranged around. The posture telescopic rod ball is hinged on the main hanger, and the movable end ball of the posture telescopic rod is hinged on the lifting platform. A posture spring is arranged in the rod cavity of the posture telescopic rod.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The present application discloses a wind turbine blade lifting device comprising a lifting main frame, a clamping assembly, a locking assembly and a stabilizing assembly, wherein a double-headed oil cylinder can drive two symmetrical clamping arms and two symmetrical clamping support plates to clamp a single blade, and a clamping oil cylinder can drive the clamping plate to clamp and fix the single blade. When the single blade is lifted at high altitude, the single blade can drive the first clamping head to clamp into the first locking slot by its own gravity, and can drive the second clamping head to clamp into the second locking slot, so that the clamping state of the two clamping arms and the two clamping support plates can be mechanically locked. Before the high-altitude installation of a single blade, the adjusting cylinder can drive the stabilizing plate to rotate around the stabilizing clamping plate, so as to limit the movement of the two stabilizing clamping plates in the direction of moving away from each other through the stabilizing groove, so as to further strengthen the mechanical locking effect of the two clamping arms and the two clamping support plates. Therefore, no matter whether it is during the high-altitude lifting process of the single blade or during the high-altitude installation process of the single blade, the clamping state of the two clamping arms and the two clamping support plates can be in a stable mechanical locking state, so that the single blade is not prone to increase the risk of falling when the double-head cylinder and the clamping cylinder fail.

[0032] 2. The present application provides a wind turbine blade lifting device which also includes a counterweight adjustment component and a posture telescopic rod, wherein the counterweight arm can be driven to swing relative to the lifting platform through the counterweight cylinder, and the counterweight block can be driven to slide relative to the counterweight arm through the counterweight motor. On the one hand, it can make the counterweight of the overall lifting of a single blade easier to adjust accurately, and on the other hand, in conjunction with the posture telescopic rod and the posture spring, it can realize the posture adjustment of a single blade during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of a single-blade fan installed at high altitude in an embodiment of the present application;

[0034] Figure 2 is a schematic diagram of the structure of the clamping assembly;

[0035] Figure 3 yes Figure 2 Magnified view at point A in the middle;

[0036] Figure 4 It is a schematic diagram of the structure of the stable component;

[0037] Figure 5 yes Figure 4 Magnified view at point B in the middle;

[0038] Figure 6 This is an exploded view of the slide bar and slide slot;

[0039] Figure 7 yes Figure 2 Enlarged view at center C;

[0040] Figure 8 yes Figure 2Enlarged view at point D in the middle;

[0041] Figure 9 yes Figure 2 Magnified view at E in the middle.

[0042] Description of reference numerals:

[0043] 1. Main hoisting frame; 11. Clamping chute; 12. Main hanger; 13. Hoisting platform; 2. Clamping assembly; 21. Clamping arm; 211. Locking chute; 212. First locking slot; 213. Second locking slot; 214. Clamping slide; 22. Double-headed oil cylinder; 23. Clamping support plate; 24. Clamping part; 241. Clamping oil cylinder; 242. Clamping plate; 243. Flexible cushion; 3. Locking assembly; 31. Locking slide; 311. First spring; 312. Connecting block; 32. First sliding rod; 321. Sliding rod; 33. First swing arm; 331. Sliding slot; 34. First clamp; 35. Second sliding rod; 351. Second spring; 36. Second swing arm; 37. Second clamp; 38. Limit plate; 4. Stabilizing assembly; 41. Stabilizing part; 411. Connecting frame; 412. Stabilizing plate; 4121. Rotating slide; 4122. Stabilizing groove; 4123. Clamping slide; 413. Rotating slider; 414. Stabilizing clamping plate; 42. Adjusting part; 421. Adjusting cylinder; 43. Clamping part; 431. Clamping plate; 4311. Clamping notch; 4312. Clamping slide; 4313. Giving way; 432. First stabilizing cylinder; 433. Second stabilizing cylinder; 434. Clamping rod; 435. Clamping cylinder; 5. Counterweight adjustment assembly; 51. Counterweight arm; 52. Counterweight cylinder; 53. Counterweight block; 54. Counterweight motor; 55. Counterweight gear; 56. Counterweight rack; 6. Posture telescopic rod; 61. Posture spring. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-9 This application is described in further detail.

[0045] The embodiment of the present application discloses a wind turbine blade hoisting device. Figure 1 A wind turbine blade lifting device is used to lift a single blade of a wind turbine, and includes a lifting main frame 1, a clamping component 2, a locking component 3 and a stabilizing component 4.

[0046] Reference Figure 1 The hoisting main frame 1 is used to connect with the hook of the crane.

[0047] Reference Figure 2 The clamping assembly 2 includes a clamping arm 21 , a double-headed cylinder 22 , a clamping support plate 23 and a clamping portion 24 .

[0048] The clamping assembly 2 is provided with two groups along the length direction of the single blade, and two clamping arms 21 are symmetrically provided. The clamping arms 21 are L-shaped rods and are arranged vertically. The clamping arms 21 include a vertical portion and a horizontal portion. The top end of the vertical portion of the clamping arm 21 is slidably connected to the lifting main frame 1. The double-headed oil cylinder 22 is fixedly connected to the lifting main frame 1 and is located between the two clamping arms 21. The two movable ends of the double-headed oil cylinder 22 are respectively fixedly connected to the vertical portions of the two clamping arms 21. The double-headed oil cylinder 22 is used to drive the two clamping arms 21 to approach each other so as to clamp the single blade. When the two clamping arms 21 clamp the single blade, the horizontal portions of the two clamping arms 21 abut against each other.

[0049] Among them, a clamping slider 214 is fixedly connected to the top of the vertical part of the clamping arm 21, and the clamping slider 214 is slidably set in the clamping groove 11 opened on the lifting main frame 1. The clamping slider 214 and the clamping groove 11 form a sliding connection structure between the clamping arm 21 and the lifting main frame 1.

[0050] There are two symmetrical clamping support plates 23 and two clamping parts 24, and they correspond one to one. The clamping support plates 23 correspond one to one with the clamping arms 21. The clamping support plates 23 are semicircular in shape. The clamping parts 24 are arranged on the clamping support plates 23 and are used to clamp a single blade. When the two clamping arms 21 clamp on a single blade, the two clamping support plates 23 clamp on the single blade synchronously. Therefore, when the horizontal parts of the two clamping arms 21 are locked, the two clamping support plates 23 are also locked synchronously. Through the clamping arms 21, the clamping support plates 23 and the clamping parts 24, not only can the clamping and fixing of the single blade be achieved, but also the mechanical clamping of the single blade is achieved. When the two clamping arms 21 and the two clamping support plates 23 cannot be separated, even if the power of the double-headed oil cylinder 22 and the clamping part 24 fails, the risk of the single blade falling is unlikely to increase.

[0051] Reference Figure 2 and Figure 3 The locking assembly 3 includes a locking slider 31 , a first slide bar 32 , a first rocker bar 33 and a first clamp 34 .

[0052] The locking assembly 3 comprises four groups, one corresponding to each clamping arm 21. The locking sliders 31 slide vertically within locking slots 211 defined in the vertical portion of the clamping arm 21 and are fixedly connected to the corresponding clamping support plate 23. A first slide bar 32 slides vertically through the vertical portion of the clamping arm 21. Its top end is fixedly connected to the locking slider 31, and its bottom end is slidably connected to a first rocker arm 33. The middle portion of the first rocker arm 33 is hinged to the bottom surface of the horizontal portion of the clamping arm 21. A first latch 34 is fixedly connected to the end of the first rocker arm 33 that is distal from the first slide bar 32. When the locking sliders 31 slide under the weight of a single blade, the first latch 34 engages within a first locking slot 212 defined in the bottom surface of the horizontal portion of the other clamping arm 21 of the clamping assembly 2. This prevents the two symmetrical clamping arms 21 from separating due to the weight of the blade when the blade is hoisted high above the ground.

[0053] Among them, reference Figure 2 A connecting block 312 is fixedly connected to the locking slider 31 , and one end of the connecting block 312 away from the locking slider 31 is fixedly connected to the clamping support plate 23 , and the connecting block 312 forms a fixed connection structure between the locking slider 31 and the clamping support plate 23 .

[0054] When the locking slider 31 is not subjected to the gravity of the single blade, the first spring 311 can drive the locking slider 31 to make the first clamping head 34 disengage from the first locking slot 212. As a result, after the single blade is unloaded, the first spring 311 can automatically make the first clamping head 34 disengage from the first locking slot 212 to automatically release the locking state between the two clamping arms 21.

[0055] Reference Figure 4 and Figure 5 The stabilizing component 4 includes a stabilizing portion 41 and an adjusting portion 42 . The stabilizing portion 41 includes a connecting frame 411 , a stabilizing plate 412 , a rotating slider 413 and a stabilizing clamping plate 414 .

[0056] Reference Figure 2 There are two groups of stabilizing components 4. The connecting frames 411 of one group of stabilizing components 4 are fixedly connected to the bottom ends of the horizontal parts of all the clamping arms 21 on one side of the lifting main frame 1, so that all the clamping arms 21 on one side of the lifting main frame 1 are fixedly connected. The connecting frames 411 of the other group of stabilizing components 4 are fixedly connected to the bottom ends of the horizontal parts of all the clamping arms 21 on the other side of the lifting main frame 1, so that all the clamping arms 21 on the other side of the lifting main frame 1 are fixedly connected.

[0057] Reference Figure 4 and Figure 5The stabilizing plate 412 is located below the connecting frame 411. Two rotating sliders 413 are provided and are both fixedly connected to the connecting frame 411. The rotating sliders 413 slide in the arc-shaped rotating groove 4121 provided on the stabilizing plate 412. The stabilizing clamping plate 414 is semicircular and fixedly connected to the connecting frame 411. The stabilizing clamping plate 414 is located in the middle of the connecting frame 411 on the side close to the other connecting frame 411. The stabilizing clamping plate 414 is adapted to be clamped into the stabilizing groove 4122 provided on the stabilizing plate 412.

[0058] Reference Figure 2 and Figure 4 After the clamping arm 21 clamps a single blade, the two stabilizing plates 412 fit together, and the two stabilizing clamping plates 414 fit together to form a complete circular plate. The stabilizing plates 412 can rotate around the stabilizing clamping plates 414 under the guidance of the rotating chute 4121. The adjustment portion 42 is connected to the connecting frame 411 and the stabilizing plates 412 respectively, and is used to drive the stabilizing plates 412 to rotate. When the two stabilizing plates 412 rotate synchronously and in the same direction, the stabilizing groove 4122 can fix the two stabilizing clamping plates 414, making it difficult for the two symmetrical clamping arms 21 to separate when installing a single blade at high altitude.

[0059] When in use, the double-headed cylinder 22 drives the two symmetrical clamping arms 21 closer to each other until the horizontal parts of the two clamping arms 21 abut against each other, so that the clamping arms 21 and the clamping support plate 23 can clamp on the single blade, and the clamping part 24 can apply clamping force to the single blade to fix the single blade on the clamping support plate 23. At this time, the lifting and installation of the single blade is completed, and the crane can lift the single blade.

[0060] When the cam 33 is in the unlock state, the first spring 312 is engaged with the first spring 314 and the first spring 316 is engaged with the first spring 317. When the cam 33 is in the unlock state, the first spring 312 is engaged with the first spring 317 and the first spring 316 is engaged with the first spring 317.

[0061] When a single blade is installed at high altitude, the gravity of the single blade will gradually be transferred to the fan hub, and the gravity of the single blade on the locking slider 31 will gradually decrease, so that the locking slider 31 will slide up under the elastic force of the first spring 311, so that the clamping effect of the first clamp head 34 in the first locking slot 212 is in an unstable state. Therefore, when installing a single blade at high altitude, it is necessary to strengthen the locking effect of the two clamping arms 21.

[0062] Before a single blade is installed at high altitude, the adjusting part 42 drives the stabilizing plate 412 to move. Under the guiding action of the rotating slide groove 4121 on the rotating slider 413, the stabilizing plate 412 can rotate around the stabilizing clamping plate 414, so that the groove wall of the stabilizing groove 4122 can fit on the two stabilizing clamping plates 414 at the same time. In this state, the two stabilizing clamping plates 414 are difficult to break free from the restriction of the groove wall of the stabilizing groove 4122 and move away from each other. Therefore, when a single blade is installed at high altitude, the locking state of the two symmetrical clamping arms 21 and the two clamping support plates 23 is strengthened, so that the two clamping arms 21 and the two clamping support plates 23 can also have a stable locking state when a single blade is installed.

[0063] Based on the above analysis, during the high-altitude lifting and high-altitude installation of a single blade, the two clamping arms 21 and the two clamping support plates 23 can be in a stable locking state. Since the two clamping arms 21 and the two clamping support plates 23 can stably mechanically clamp the single blade, even if the double-headed cylinder 22 and the clamping part 24 lose power, and the single blade is shaken by the wind at high altitude, the single blade is not prone to increasing the risk of falling.

[0064] Further, refer to Figure 3 In order to enhance the locking effect of the two symmetrical clamping arms 21 , the locking assembly 3 further includes a second slide bar 35 , a second rocker bar 36 and a second clamping head 37 .

[0065] A second slide bar 35 is slidably mounted on the horizontal portion of the clamping arm 21, with one end inserted into a first locking slot 212 provided in the horizontal portion of the clamping arm 21. The other end of the second slide bar 35 is slidably connected to a second rocker bar 36. The middle portion of the second rocker bar 36 is hinged to the top end of the horizontal portion of the clamping arm 21. A second clamping head 37 is fixedly attached to the end of the second rocker bar 36 that is away from the second slide bar 35.

[0066] When the second slide rod 35 penetrates into the first locking slot 212 and engages the first clamping head 34, the first clamping head 34 can drive the second slide rod 35 to enable the second clamping head 37 to engage with the second locking slot 213 opened on the top surface of the horizontal part of the other clamping arm 21 of the clamping assembly 2.

[0067] A second spring 351 is provided between the second slide bar 35 and the clamping arm 21, one end of the second spring 351 is fixedly connected to the second slide bar 35, and the other end is fixedly connected to the top surface of the horizontal part of the clamping arm 21. When the first clamping head 34 disengages from the first locking slot 212, the second spring 351 can drive the second slide bar 35 to make the second clamping head 37 disengage from the second locking slot 213. When the first clamping head 34 disengages from the first locking slot 212, the second spring 351 can automatically make the second clamping head 37 disengage from the second locking slot 213, thereby automatically releasing the locking state between the two clamping arms 21.

[0068] When the first clamp head 34 is clamped in the first locking slot 212 to lock the two symmetrical clamping arms 21, the first clamp head 34 can push the second slide bar 35 to slide up, and the second slide bar 35 drives the second rocker bar 36 to swing around the hinge point. During the swinging process, the second rocker bar 36 causes the second clamp head 37 to be clamped in the second locking slot 213, thereby enhancing the locking effect of the two symmetrical clamping arms 21 through the second slide bar 35, the second rocker bar 36 and the second clamp head 37.

[0069] Furthermore, refer to Figure 2 、 Figure 3 and Figure 6 The sliding connection structure between the first sliding rod 32 and the first rocker arm 33 is consistent with the sliding connection structure between the second sliding rod 35 and the second rocker arm 36. A sliding rod 321 is fixedly connected to the first sliding rod 32. The sliding rod 321 is slidably arranged in a sliding groove 331 opened on the first rocker arm 33. The sliding direction of the sliding rod 321 is consistent with the length direction of the first rocker arm 33. Through the sliding of the sliding rod 321 in the sliding groove 331, the first sliding rod 32 can drive the first rocker arm 33 to swing through the sliding rod 321 when it slides down vertically.

[0070] Specifically, refer to Figure 4 The adjusting part 42 includes an adjusting cylinder 421, which is rotatably connected to the connecting frame 411, and the movable end of the adjusting cylinder 421 is rotatably connected to the stabilizing plate 412. When the stabilizing plate 412 needs to be rotated around the stabilizing clamping plate 414, the adjusting cylinder 421 is extended, and the adjusting cylinder 421 can push the stabilizing plate 412 to rotate with the connecting frame 411 as the support point. At the same time, the adjusting cylinder 421 will deflect along with the rotation of the stabilizing plate 412, so that the stabilizing plate 412 can rotate around the stabilizing clamping plate 414.

[0071] Reference Figure 4 In order to reduce the amplitude of wind shaking of a single blade during installation, the stabilizing assembly 4 also includes a clamping part 43, which includes a clamping plate 431, a first stabilizing cylinder 432, a second stabilizing cylinder 433, a clamping rod 434 and a clamping cylinder 435.

[0072] There are more than two clamping plates 431, all of which are arranged in the vertical direction and are parallel to the stabilizing plate 412. Two adjacent clamping plates 431 are slidably connected, the top clamping plate 431 is slidably connected to the stabilizing plate 412, and the sliding direction of two adjacent clamping plates 431 is parallel to the sliding direction of the clamping plate 431 and the stabilizing plate 412. All of the clamping plates 431 form a telescopic structure.

[0073] Among them, the sliding connection structure between the top-layer clamping plate 431 and the stabilizing plate 412 is consistent with the sliding connection structure between the two adjacent clamping plates 431. A clamping slide 4312 is fixedly connected to the top-layer clamping plate 431, and the clamping slide 4312 is slidably set in the clamping slide groove 4123 opened on the stabilizing plate 412. The clamping slide 4312 and the clamping slide groove 4123 form the sliding connection structure between the top-layer clamping plate 431 and the stabilizing plate 412.

[0074] The first stabilizing cylinder 432 is fixedly connected to the stabilizing plate 412. The movable end of the first stabilizing cylinder 432 is fixedly connected to the topmost clamping plate 431. The first stabilizing cylinder 432 is used to drive the topmost clamping plate 431 to extend. At least one second stabilizing cylinder 433 is provided, and all second stabilizing cylinders 433 are respectively arranged between two adjacent clamping plates 431. The second stabilizing cylinder 433 is fixedly connected to the upper clamping plate 431, and the movable end of the second stabilizing cylinder 433 is fixedly connected to the lower clamping plate 431. The second stabilizing cylinder 433 is used to drive the lower clamping plate 431 to extend.

[0075] A clamping notch 4311 adapted to the wind turbine tower is provided at one end of the bottom clamping plate 431 close to the root of the single blade. The clamping notch 4311 is used to fit on the wind turbine tower to apply a clamping force to the tower. The clamping rod 434 is located at one end of the clamping notch 4311 opened on the clamping plate 431 on the bottom layer, and the middle part of the clamping rod 434 is located in the give way groove 4313 opened on the clamping plate 431. The middle part of the clamping rod 434 is hinged to the groove wall of the give way groove 4313. The clamping cylinder 435 is located in the give way groove 4313 and is hinged to the groove bottom of the give way groove 4313. The movable end of the clamping cylinder 435 is hinged to the end of the clamping rod 434. The clamping cylinder 435 is used to drive the clamping rod 434 to clamp on the tower of the wind turbine when extended. The clamping plate 431 and the wind turbine tower can be connected through the clamping notch 4311 and the clamping rod 434.

[0076] When the first and second stabilizing cylinders 432 and 433 are extended, all the clamping plates 431 are extended one by one under the drive of the first and second stabilizing cylinders 432 and 433, so that the end of the clamping notch 4311 of the bottom clamping plate 431 can be close to the tower of the wind turbine, so that the clamping notch 4311 can fit on the tower of the wind turbine, and then the clamping cylinder 435 is extended, and the clamping cylinder 435 drives the clamping rod 434 to swing, so that the clamping rod 434 is clamped on the tower of the wind turbine, so that the clamping plate 431 and the tower of the wind turbine can establish a connection relationship, so that the clamping arm 21 can be connected to the tower of the wind turbine when the single blade is installed, reducing the influence of wind force on the installation of the single blade.

[0077] Reference Figure 2 When the cam 31 is in the unlock state, the locking member 31 is locked and the locking member 31 is locked.

[0078] Specifically, refer to Figure 2 and Figure 7 The clamping part 24 includes a clamping cylinder 241 and a clamping plate 242. A plurality of clamping cylinders 241 are arranged along the circumference of a single blade. The clamping cylinder 241 is fixedly connected to the clamping support plate 23. A plurality of clamping plates 242 are arranged, and the earth is hinged to the movable end of the clamping cylinder 241 in a one-to-one correspondence. The clamping cylinder 241 is used to drive the clamping plate 242 to press against the single blade.

[0079] Among them, reference Figure 7 In order to prevent the clamping plate 242 from damaging the single blade, a flexible pad 243 is fixed on the side of the clamping plate 242 away from the clamping cylinder 241.

[0080] After the symmetrical clamping support plate 23 clamps the single blade, the clamping cylinder 241 is extended, and the clamping cylinder 241 drives the clamping plate 242 close to the single blade, so that the flexible pad 243 on the clamping plate 242 can be stably pressed on the single blade, thereby achieving clamping and fixing of the single blade.

[0081] Reference Figure 2In order to facilitate the adjustment of the counterweight of a single blade during high-altitude lifting, the present application provides a wind turbine blade lifting device that also includes a counterweight adjustment component 5. Four groups of counterweight adjustment components 5 are arranged around the lifting main frame 1. The counterweight adjustment component 5 includes a counterweight arm 51, a counterweight cylinder 52 and a counterweight block 53. One end of the counterweight arm 51 is hinged to the lifting main frame 1, and the counterweight cylinder 52 is hinged to the lifting main frame 1. The movable end of the counterweight cylinder 52 is hinged to the counterweight arm 51. The counterweight cylinder 52 is used to drive the counterweight arm 51 to swing, and the counterweight block 53 is set on the counterweight arm 51.

[0082] After lifting a single blade, in order to balance the overall lifting of the single blade, the counterweight cylinder 52 is extended and retracted to drive the counterweight arm 51 to swing. By swinging the counterweight arm 51, the position of the counterweight block 53 relative to the lifting main frame 1 can be adjusted, so that the overall lifting of the single blade can be balanced.

[0083] Further, refer to Figure 2 and Figure 8 In order to make the counterweight of the single-blade overall lifting easier to adjust accurately, a plurality of counterweight blocks 53 are provided, and the plurality of counterweight blocks 53 are slid one by one on the counterweight arm 51 along the arm length direction of the counterweight arm 51. Each counterweight block 53 is fixedly connected to a counterweight motor 54, and the output shaft of the counterweight motor 54 is fixedly connected to a counterweight gear 55. All the counterweight gears 55 are engaged with a counterweight rack 56, and the counterweight rack 56 is fixedly connected to the counterweight arm 51.

[0084] When adjusting the counterweight, start the counterweight motor 54, which drives the counterweight gear 55 to rotate. Since the counterweight rack 56 is engaged with the counterweight gear 55, the counterweight gear 55 can drive the counterweight motor 54 to move when it rotates. The counterweight motor 54 can drive the counterweight block 53 to slide to adjust the position of each counterweight block 53 on the counterweight arm 51, so that the counterweight of the single-blade overall lifting is easy to be accurately adjusted.

[0085] Furthermore, refer to Figure 1 and Figure 2 In order to facilitate the adjustment of the posture of a single blade during installation, so as to facilitate the insertion of the root of the single blade into the hub of the wind turbine, the main hoisting frame 1 includes a main hanger 12 and a hoisting platform 13. The main hanger 12 is used to connect with the hook of the crane, and the hoisting platform 13 is used to connect with the clamping arm 21, the double-head cylinder 22, the counterweight arm 51 and the counterweight cylinder 52.

[0086] Reference Figure 2 and Figure 9Four posture telescopic rods 6 are arranged between the main hanger 12 and the lifting platform 13. The four posture telescopic rods 6 are arranged in a surrounding manner. The posture telescopic rod 6 is ball-hinged on the main hanger 12, and the movable end of the posture telescopic rod 6 is ball-hinged on the lifting platform 13. A posture spring 61 is arranged in the rod cavity of the posture telescopic rod 6. One end of the posture spring 61 is fixedly connected to the fixed end of the posture telescopic rod 6, and the other end is fixedly connected to the movable end of the posture telescopic rod 6. The posture spring 61 is in a compressed state.

[0087] When the posture of a single blade needs to be adjusted, for example, the root end of the single blade needs to be raised, and the tip end of the single blade needs to be lowered, the counterweight arm 51 is first driven by the counterweight cylinder 52 to swing to a position parallel to the single blade, and then the position of the counterweight block 53 on the counterweight arm 51 is adjusted by the counterweight motor 54, so that the counterweight block 53 close to the root of the single blade slides to the end of the counterweight arm 51 close to the lifting platform 13, so as to reduce the gravity balancing effect of the lifting platform 13 close to the root end of the single blade, and at the same time reduce the gravity balancing effect of the lifting platform 13 close to the root end of the single blade. The pressure on the posture spring 61 in the posture telescopic rod 6 at the root of the blade causes the counterweight blocks 53 away from the root of the single blade to slide to the end of the counterweight arm 51 away from the lifting platform 13, so as to increase the gravity balancing effect of the lifting platform 13 away from the root end of the single leaf, and at the same time increase the pressure on the posture spring 61 in the posture telescopic rod 6 away from the root of the single blade, so that the lifting platform 13 can be deflected relative to the main hanger 12, so that the root end of the single blade can be raised and the tip of the single blade can be lowered.

[0088] The posture adjustment process for other angles is consistent with the above. By adjusting the positions of the counterweight arm 51 and the counterweight block 53, the posture adjustment of a single blade can be achieved to facilitate the installation of a single blade.

[0089] The implementation principle of the wind turbine blade lifting device of the embodiment of the present application is as follows: when in use, the double-headed oil cylinder 22 drives the symmetrical clamping arms 21 and the symmetrical clamping support plates 23 to clamp the single blade synchronously, and the clamping oil cylinder 241 drives the clamping plate 242 to clamp and fix the single blade. After the single blade is lifted, under the action of the gravity of the single blade, the locking slider 31 can drive the first clamping head 34 to be clamped in the first locking groove 212 through the first sliding rod 32 and the first swing rod 33. At the same time, the first clamping head 34 can drive the second clamping head 34 through the second sliding rod 35 and the second swing rod 36. 7 is clamped in the second locking slot 213. When a single blade is hoisted at high altitude, the two clamping arms 21 and the two clamping support plates 23 are not easy to separate. Before installing a single blade, the adjusting cylinder 421 can drive the stabilizing plate 412 to rotate around the stabilizing clamping plate 414 to limit the two stabilizing clamping plates 414 from moving away from each other through the stabilizing slot 4122. When a single blade is installed, the two clamping arms 21 and the two clamping support plates 23 are also not easy to separate. Therefore, when the double-head cylinder 22 and the clamping cylinder 241 fail, the single blade is not prone to increase the risk of falling.

[0090] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A fan blade hoisting device for hoisting a single blade of a fan, characterized in that: include: A main hoisting frame (1) is used for connecting with a hook of a crane; A clamping assembly (2) comprising a clamping arm (21), a double-headed oil cylinder (22), a clamping support plate (23) and a clamping portion (24); A locking assembly (3) comprising a locking slider (31), a first slide bar (32), a first swing bar (33) and a first clamp (34); The stabilizing assembly (4) includes a stabilizing portion (41) and an adjusting portion (42), wherein the stabilizing portion (41) includes a connecting frame (411), a stabilizing plate (412), a rotating slider (413) and a stabilizing clamping plate (414); in, The clamping assembly (2) is provided with two or more groups along the length direction of the single blade, and two clamping arms (21) are symmetrically provided. The top end of the clamping arm (21) is slidably connected to the hoisting main frame (1), and the double-headed oil cylinder (22) is connected to the hoisting main frame (1). The two movable ends of the double-headed oil cylinder (22) are respectively connected to the two clamping arms (21). The double-headed oil cylinder (22) is used to drive the two clamping arms (21) to approach each other so as to clamp the single blade. The clamping support plates (23) and the clamping parts (24) are symmetrically arranged in two and correspond to each other. The clamping support plates (23) correspond to the clamping arms (21) in one-to-one correspondence. The clamping parts (24) are arranged on the clamping support plates (23) and are used to clamp a single blade. When the two clamping arms (21) clamp on the single blade, the two clamping support plates (23) are clamped on the single blade synchronously. The locking assembly (3) is provided with multiple groups, and corresponds to the clamping arm (21) one by one. The locking slider (31) is slidably arranged in the locking slide groove (211) provided on the clamping arm (21). The locking slider (31) is connected to the corresponding clamping support plate (23). The first slide bar (32) is slidably penetrated on the clamping arm (21). One end of the first slide bar (32) is connected to the locking slider (31), and the other end is slidably connected to the first swing bar (33). The middle part of the first swing bar (33) is hinged on the clamping arm (21). The first clamp head (34) is connected to the end of the first swing bar (33) away from the first slide bar (32). When the locking slider (31) slides under the action of the gravity of the single blade, the first clamp head (34) can be clamped in the first locking slot (212) provided on the other clamping arm (21) of the clamping assembly (2); A first spring (311) is provided between the locking slider (31) and the clamping arm (21). When the locking slider (31) is not subjected to the gravity of the single blade, the first spring (311) can drive the locking slider (31) to cause the first clamping head (34) to escape from the first locking slot (212). Two groups of stabilizing components (4) are provided, wherein the connecting frame (411) of one group of stabilizing components (4) is connected to the bottom ends of all the clamping arms (21) on one side of the hoisting main frame (1), and the connecting frame (411) of the other group of stabilizing components (4) is connected to the bottom ends of all the clamping arms (21) on the other side of the hoisting main frame (1); The stabilizing plate (412) is located below the connecting frame (411), and more than two rotating sliders (413) are provided and are all connected to the connecting frame (411). The rotating sliders (413) are slidably arranged in the arc-shaped rotating groove (4121) opened on the stabilizing plate (412). The stabilizing card (414) is in the shape of a semicircular plate and is connected to the connecting frame (411). The stabilizing card (414) is located in the middle position of the connecting frame (411) connected to itself, close to the other connecting frame (411). The stabilizing card (414) is adapted to be clamped in the stabilizing groove opened on the stabilizing plate (412). In (4122), after the clamping arm (21) clamps the single blade, the two stabilizing plates (412) are fitted together, and the two stabilizing clamping plates (414) are fitted together to form a complete circular plate. The stabilizing plate (412) can rotate around the stabilizing clamping plate (414) under the guidance of the rotating slide groove (4121). The adjusting part (42) is connected to the connecting frame (411) and the stabilizing plate (412) respectively. The adjusting part (42) is used to drive the stabilizing plate (412) to rotate. When the two stabilizing plates (412) rotate synchronously and in the same direction, the stabilizing groove (4122) can fix the two stabilizing clamping plates (414).

2. A wind turbine blade hoisting device according to claim 1, characterized in that: The locking assembly (3) further comprises a second slide bar (35), a second swing bar (36) and a second clamping head (37). The second slide bar (35) is slidably arranged on the clamping arm (21), and one end thereof is inserted into a first locking clamping groove (212) provided on the clamping arm (21). The other end of the second slide bar (35) is slidably connected to the second swing bar (36). The middle part of the second swing bar (36) is hinged on the clamping arm (21). The second clamping head (37) is connected to one end of the second swing bar (36) away from the second slide bar (35). When the second slide bar (35) penetrates into the first locking slot (212) and is clamped with the first clamping head (34), the first clamping head (34) can drive the second slide bar (35) to clamp the second clamping head (37) into the second locking slot (213) provided on the other clamping arm (21) of the clamping assembly (2). A second spring (351) is provided between the second slide bar (35) and the clamping arm (21). When the first clamping head (34) is disengaged from the first locking slot (212), the second spring (351) can drive the second slide bar (35) to disengage the second clamping head (37) from the second locking slot (213).

3. The wind turbine blade hoisting device according to claim 2, characterized in that: The sliding connection structure between the first slide bar (32) and the first swing bar (33) is consistent with the sliding connection structure between the second slide bar (35) and the second swing bar (36). The first slide bar (32) is connected to a sliding bar (321). The sliding bar (321) is slidably arranged in a sliding groove (331) provided on the first swing bar (33). The sliding direction of the sliding bar (321) is consistent with the length direction of the first swing bar (33).

4. The wind turbine blade hoisting device according to claim 1, characterized in that: The adjusting portion (42) comprises an adjusting oil cylinder (421), the adjusting oil cylinder (421) is rotatably connected to the connecting frame (411), and the movable end of the adjusting oil cylinder (421) is rotatably connected to the stabilizing plate (412).

5. The wind turbine blade hoisting device according to claim 1, characterized in that: The stabilizing assembly (4) further comprises a clamping portion (43), the clamping portion (43) comprising a clamping plate (431), a first stabilizing oil cylinder (432), a second stabilizing oil cylinder (433), a clamping rod (434) and a clamping oil cylinder (435), more than two clamping plates (431) are provided, all the clamping plates (431) are arranged in a vertical direction and are parallel to the stabilizing plate (412), two adjacent clamping plates (431) are slidably connected, the topmost clamping plate (431) is slidably connected to the stabilizing plate (412), and the sliding direction of the two adjacent clamping plates (431) is parallel to the sliding direction of the clamping plate (431) and the stabilizing plate (412); The first stabilizing oil cylinder (432) is connected to the stabilizing plate (412), and the movable end of the first stabilizing oil cylinder (432) is connected to the topmost clamping plate (431). At least one second stabilizing oil cylinder (433) is provided, and all the second stabilizing oil cylinders (433) are respectively provided between two adjacent clamping plates (431). The second stabilizing oil cylinder (433) is connected to the upper clamping plate (431), and the movable end of the second stabilizing oil cylinder (433) is connected to the lower clamping plate (431). A clamping notch (4311) adapted to the wind turbine tower is provided at one end of the bottom clamping plate (431) near the root of the single blade. The middle portion of the clamping rod (434) is hinged to one end of the clamping plate (431) with the clamping notch (4311). A clamping oil cylinder (435) is hinged to the bottom clamping plate (431). The movable end of the clamping oil cylinder (435) is hinged to the end of the clamping rod (434). The clamping oil cylinder (435) is used to drive the clamping rod (434) to clamp onto the wind turbine tower when extended.

6. The wind turbine blade hoisting device according to claim 1, characterized in that: The locking assembly (3) further comprises a limit plate (38), the limit plate (38) being located at the notch of the locking slide groove (211) and being connected to the clamping arm (21), the limit plate (38) being used to limit the lowest position to which the locking slider (31) can slide downward.

7. The wind turbine blade hoisting device according to claim 1, characterized in that: The clamping portion (24) includes a clamping oil cylinder (241) and a clamping plate (242). A plurality of clamping oil cylinders (241) are provided along the circumference of the single blade. The clamping oil cylinder (241) is connected to the clamping support plate (23). A plurality of clamping plates (242) are provided and are hinged to the movable end of the clamping oil cylinder (241) in a one-to-one correspondence. The clamping oil cylinder (241) is used to drive the clamping plates (242) to press against the single blade.

8. The wind turbine blade hoisting device according to claim 1, characterized in that: The invention also includes a counterweight adjustment assembly (5), wherein four groups of the counterweight adjustment assembly (5) are arranged around the hoisting main frame (1), and the counterweight adjustment assembly (5) includes a counterweight arm (51), a counterweight oil cylinder (52) and a counterweight block (53). One end of the counterweight arm (51) is hinged to the hoisting main frame (1), the counterweight oil cylinder (52) is hinged to the hoisting main frame (1), and the movable end of the counterweight oil cylinder (52) is hinged to the counterweight arm (51). The counterweight oil cylinder (52) is used to drive the counterweight arm (51) to swing, and the counterweight block (53) is arranged on the counterweight arm (51).

9. The wind turbine blade hoisting device according to claim 8, characterized in that: The counterweight blocks (53) are provided in plurality, and the plurality of counterweight blocks (53) are slidably arranged one by one on the counterweight arm (51) along the arm length direction of the counterweight arm (51), and each counterweight block (53) is connected to a counterweight motor (54), and the output shaft of the counterweight motor (54) is connected to a counterweight gear (55), and all the counterweight gears (55) are engaged with a counterweight rack (56), and the counterweight rack (56) is connected to the counterweight arm (51).

10. The wind turbine blade hoisting device according to claim 9, characterized in that: The main hoisting frame (1) comprises a main hanger (12) and a hoisting platform (13), wherein the main hanger (12) is used to be connected to a hook of a crane, and the hoisting platform (13) is used to be connected to a clamping arm (21), a double-head oil cylinder (22), a counterweight arm (51) and a counterweight oil cylinder (52). A plurality of posture telescopic rods (6) are arranged between the main hanger (12) and the hoisting platform (13), wherein the plurality of posture telescopic rods (6) are arranged in a surrounding manner, wherein the posture telescopic rods (6) are ball-hinged on the main hanger (12), and the movable end ball of the posture telescopic rod (6) is ball-hinged on the hoisting platform (13), and a posture spring (61) is arranged in the rod cavity of the posture telescopic rod (6).

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