Automatic control multi-angle heating device for wind power blade maintenance

Abstract

The invention relates to the technical field of heating devices, and provides an automatic control multi-angle heating device for maintenance of a wind power blade, which can be matched with the maintenance of the wind power blade to realize the heating operation of the downward leeside of the wind power blade, and the heating operation area can be correspondingly adjusted according to the maintenance area of the wind power blade, so that the heating device is more practical. The electric heating pipe protection device is good in operation convenience and wider in posture adjusting range and comprises an electric heating pipe protection cover and further comprises a movable frame, a height telescopic adjusting rod is installed on the movable frame, an angle adjusting shaft is installed at the top end of the height telescopic adjusting rod, and the electric heating pipe protection cover comprises a connecting sleeve, two diagonal inner frames and two diagonal outer frames. The connecting sleeve is installed on the angle adjusting shaft, the connecting sleeve is connected with two telescopic bent plates in a sliding mode, the two telescopic bent plates are both fixedly connected with connecting frames, the two diagonal inner frames are connected with the two connecting frames in a sliding mode respectively, and the two diagonal outer frames are each provided with a first connecting notch and a second connecting notch.

Description

Technical Field

[0001] The invention relates to the technical field of heating devices, and in particular to an automatic control multi-angle heating device for repairing wind turbine blades. Background Art

[0002] In the production process of repairing defects of wind turbine blades, production personnel usually re-grind the parts of the blade surface that need repair and then perform hand-layup or pouring. Since the repair position requires the resin of the cloth layer used for repair to be cured before the blade can be circulated, in order to improve the curing efficiency of the resin layer, we propose an automatically controlled multi-angle heating device for wind turbine blade repair.

[0003] Under the existing production model, production personnel will hand-paste or pour the areas on the blade surface that need repair, and generally use an electric heating blanket to heat them. However, this method of heating with an electric heating blanket requires that after the blade repair is completed, the production personnel use transparent tape to stick the electric heating blanket to the corresponding skin of the blade, turn on the electric heating of the electric heating blanket, and then cure it. There are problems with this: when the windward side of the blade faces upward, the electric heating blanket fits well with the skin, and the curing efficiency meets the requirements. However, when the leeward side of the blade faces downward, the electric heating blanket cannot fit well with the skin, forming a "cavity" between the electric heating blanket and the skin, resulting in low heating efficiency. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an automatically controlled multi-angle heating device for wind turbine blade maintenance, which can be used in conjunction with wind turbine blade maintenance to achieve heating operations on the downward leeward side of the wind turbine blade, and the heating operation area can be adjusted accordingly according to the maintenance area of ​​the wind turbine blade. The device is more practical, has better operation convenience, and has a wider range of posture adjustment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatically controlled multi-angle heating device for wind turbine blade maintenance, comprising an electric heating tube protective cover and a movable frame, wherein a height telescopic adjustment rod is installed on the movable frame, and an angle adjustment shaft is installed on the top of the height telescopic adjustment rod, and the electric heating tube protective cover comprises a connecting sleeve, two diagonal inner frames and two diagonal outer frames, wherein the connecting sleeve is installed on the angle adjustment shaft, and the connecting sleeve is slidably connected to two telescopic bent plates, and the two telescopic bent plates are fixedly connected to connecting frames, and the two diagonal inner frames are respectively slidably connected to the two connecting frames, and the two diagonal outer frames are provided with a first connecting notch and a second connecting notch, and the two diagonal inner frames are provided with a first connecting notch and a second connecting notch. The frames are respectively slidably connected to the two first connecting grooves, and the two diagonal inner frames are respectively slidably connected to the two second connecting grooves. A plurality of upper outer infrared emitting electric heating tubes are installed in one diagonal outer frame, and a plurality of lower outer infrared emitting electric heating tubes are installed in the other diagonal outer frame. A plurality of upper inner infrared emitting electric heating tubes are installed in one diagonal inner frame, and a plurality of lower inner infrared emitting electric heating tubes are installed in the other diagonal inner frame. The lower outer infrared emitting electric heating tubes, the lower inner infrared emitting electric heating tubes, the upper inner infrared emitting electric heating tubes and the upper outer infrared emitting electric heating tubes are arranged in a staggered state with a gradually increasing height. An adjustment drive assembly is installed on the connecting sleeve, and the adjustment drive assembly is used for driving and adjusting the two diagonal inner frames.

[0006] Preferably, the adjustment drive assembly includes a rotating seat and two rotating blocks, the rotating seat is rotatably connected to the top end of the connecting sleeve, and the connecting sleeve is threadedly connected with a locking bolt, and the locking bolt is used for locking and limiting the rotating seat relative to the connecting sleeve, the two rotating blocks are respectively rotatably connected to the bottom ends of the two diagonal inner frames, the rotating seat is rotatably connected with a threaded rod, two threaded sections are arranged on the threaded rod, and the threaded directions of the two threaded sections are opposite, and threaded holes are opened on the two rotating blocks, and the two threaded holes are respectively threadedly connected to the two threaded sections.

[0007] Preferably, the height telescopic adjustment rod includes a telescopic sleeve and a telescopic rod, the bottom end of the telescopic rod is fixedly connected to a connecting plate, the connecting plate is fixedly connected to the mobile frame, the telescopic sleeve is connected to the telescopic rod, and the telescopic sleeve is fixedly connected to a covering limit member for auxiliary limiting the telescopic rod after adjustment relative to the telescopic sleeve, and the top end of the telescopic sleeve is connected to the angle adjustment shaft.

[0008] Preferably, the covering limit member includes a fixing ring, which is fixedly connected to the bottom end of the telescopic sleeve, and a plurality of guide tubes are fixedly connected inside the fixing ring, and a clamping rod and a pushing rod are arranged inside the plurality of guide tubes, and ends of the plurality of clamping rods away from the telescopic rod are fixedly connected to elastic springs, and ends of the plurality of elastic springs away from the telescopic rod are respectively fixedly connected to the plurality of pushing rods, a synchronous ring is rotatably connected inside the fixing ring, and the synchronous ring is fixedly connected to a plurality of linkage rods, and oblique bar holes are opened on the plurality of pushing rods, and the plurality of linkage rods are respectively connected to the plurality of oblique bar holes.

[0009] Preferably, the telescopic sleeve is fixedly connected to a fixed shaft, the fixed shaft is rotatably connected to a swivel block, the swivel block is fixedly connected to a limit spring, the bottom end of the limit spring is fixedly connected to a push block, the push block is connected to an operating rod, and the operating rod is fixedly connected to the synchronous ring.

[0010] Preferably, a spherical segment is fixedly connected to the operating rod, a spherical sleeve is externally connected to the spherical segment, the spherical sleeve is fixedly connected to the pushing block, and one end of the spherical segment away from the operating rod is fixedly connected to a T-shaped handheld frame.

[0011] Preferably, the angle adjustment shaft includes an articulated seat, which is fixedly connected to the bottom end of the connecting sleeve. A hinged rod is arranged in the articulated seat, which is fixedly connected to the top end of the telescopic sleeve. A connecting hole is provided on the articulated rod, and a hinge is connected in the connecting hole, and the hinge is connected to the articulated seat.

[0012] Preferably, the hinged part includes a shaft sleeve, which is fixedly connected in the connecting hole, and a transfer hole and an auxiliary hole are provided on the hinge seat. The shaft sleeve is rotatably connected in the transfer hole, and a threaded pressure rod is threadedly connected to the shaft sleeve. A limiting cylinder is provided on the threaded pressure rod, and the limiting cylinder is fixedly connected to the limiting rod. The limiting rod is slidably fitted in the auxiliary hole, and the length of the limiting rod is longer than the depth of the auxiliary hole. The threaded pressure rod is provided with a step cap for pressing and pushing the limiting cylinder, and a pressing surface matching the limiting rod is provided on the hinged rod.

[0013] Preferably, a temperature sensor and a distance sensor are installed on the top of the rotating seat, which are used to monitor the heating temperature change and distance change of the maintenance area in real time respectively.

[0014] Preferably, two universal wheels and two rotating wheels are installed at the bottom end of the movable frame.

[0015] Compared with the prior art, the present invention provides an automatic control multi-angle heating device for wind turbine blade maintenance, which has the following beneficial effects:

[0016] (1) In the present invention, a component with corresponding heating function is formed by the cooperation of the electric heating tube protective cover and the lower outer infrared emitting electric heating tube, the lower inner infrared emitting electric heating tube, the upper inner infrared emitting electric heating tube and the upper outer infrared emitting electric heating tube installed therein, and the component can be matched with the wind turbine blade to be repaired to realize the heating operation of the downward leeward side of the wind turbine blade.

[0017] (2) In the present invention, by adjusting the design of the driving component, the matching electric heating tube protective cover forms the adjustment of the heating area formed by the lower outer infrared emitting electric heating tube, the lower inner infrared emitting electric heating tube, the upper inner infrared emitting electric heating tube and the upper outer infrared emitting electric heating tube. The heating operation area can be adjusted accordingly according to the maintenance area of ​​the wind turbine blade, which is more practical and convenient to operate.

[0018] (3) In the present invention, a bracket installation structure corresponding to the electric heating tube protective cover is formed by the cooperation of the movable frame, the height telescopic adjustment rod and the angle adjustment shaft, so that the bracket posture of the electric heating tube protective cover can be adjusted while the installation of the electric heating tube protective cover is achieved, and the posture adjustment range is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0021] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0022] Figure 4 For the present invention Figure 1 A schematic diagram of the local enlarged structure at C in the middle;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the threaded pressure rod and the stepped cap of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting frame of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing ring and the guide tube of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the synchronization ring, linkage rod and spherical segment of the present invention;

[0027] Fig. 9 It is a schematic diagram of the overall three-dimensional structure of the present invention when viewed from above;

[0028] Fig.10 For the present invention Fig. 9 A schematic diagram of the local enlarged structure at D in the middle;

[0029] Fig.11 It is a schematic diagram of the exploded three-dimensional structure of the fixing ring, the guide tube and the abutting rod of the present invention;

[0030] Fig.12 It is a schematic diagram of the three-dimensional structure of the push block and the spherical sleeve of the present invention;

[0031] Fig.13 It is a schematic diagram of the three-dimensional structure of the cooperation of the abutting rod, the pushing rod and the elastic spring of the present invention;

[0032] Fig.14 It is a schematic diagram of the exploded three-dimensional structure of the connection sleeve, the hinge seat and the hinge rod of the present invention;

[0033] Fig.15 It is a schematic diagram of the three-dimensional structure of the cooperation between the limiting rod and the limiting cylinder of the present invention;

[0034] Fig.16 It is a three-dimensional structural schematic diagram of the cooperation between the limiting rod and the limiting cylinder of the present invention from another angle;

[0035] Fig.17 It is a three-dimensional structural schematic diagram of the shaft sleeve of the present invention;

[0036] Fig.18 It is a schematic diagram of the three-dimensional structure of the fixing ring and the guide tube cooperating with each other in the present invention;

[0037] Fig.19 It is a bottom-up three-dimensional structural schematic diagram of the relative cooperation of the pressing rod, the pushing rod and the elastic spring of the present invention;

[0038] Fig. 20 It is a schematic diagram of the overall use status of the present invention relative to wind turbine blade maintenance.

[0039] In the figure: 1, moving frame; 2, connecting sleeve; 3, diagonal inner frame; 4, diagonal outer frame; 5, telescopic bent plate; 6, connecting frame; 7, first connecting notch; 8, second connecting notch; 9, upper outer infrared emitting electric heating tube; 10, lower outer infrared emitting electric heating tube; 11, upper inner infrared emitting electric heating tube; 12, lower inner infrared emitting electric heating tube; 13, rotating seat; 14, rotating block; 15, threaded rod; 16, threaded section; 17, telescopic sleeve; 18, telescopic rod; 19, connecting plate; 20, fixing ring; 21, guide tube; 22, tightening rod; 2 3. Push rod; 24. Elastic spring; 25. Synchronous ring; 26. Linkage rod; 27. Oblique bar hole; 28. Fixed shaft; 29. ​​Swivel block; 30. Limit spring; 31. Push block; 32. Operating rod; 33. Spherical segment; 34. Spherical sleeve; 35. T-shaped hand-held frame; 36. Articulated seat; 37. Articulated rod; 38. Connecting hole; 39. Shaft sleeve; 40. Transfer hole; 41. Auxiliary hole; 42. Limit cylinder; 43. Threaded pressure rod; 44. Step cap; 45. Temperature sensor; 46. Distance sensor; 47. Universal wheel; 48. Rotating wheel. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example

[0042] See also Figure 1-Figure 20, an automatic control multi-angle heating device for wind turbine blade maintenance, comprising an electric heating tube protective cover, and also comprising a mobile frame 1, a height telescopic adjustment rod is installed on the mobile frame 1, and an angle adjustment shaft is installed on the top of the height telescopic adjustment rod. The electric heating tube protective cover comprises a connecting sleeve 2, two diagonal inner frames 3 and two diagonal outer frames 4, the connecting sleeve 2 is installed on the angle adjustment shaft, the connecting sleeve 2 is slidably connected to two telescopic bent plates 5, and the two telescopic bent plates 5 are fixedly connected to a connecting frame 6, the two diagonal inner frames 3 are respectively slidably connected to the two connecting frames 6, and the two diagonal outer frames 4 are respectively provided with a first connecting notch 7 and a second connecting notch 8, the two diagonal inner frames 3 are respectively slidably connected to the two first connecting notches 7, and the two diagonal inner frames 3 are respectively slidably connected to the two second connecting notches 8, a plurality of upper outer infrared emitting electric heating tubes 9 are installed in one diagonal outer frame 4, a plurality of lower outer infrared emitting electric heating tubes 10 are installed in another diagonal outer frame 4, a plurality of upper inner infrared emitting electric heating tubes 11 are installed in one diagonal inner frame 3, and the other A plurality of lower inner infrared emitting electric heating tubes 12 are installed in the inner corner frame 3, and the lower outer infrared emitting electric heating tubes 10, the lower inner infrared emitting electric heating tubes 12, the upper inner infrared emitting electric heating tubes 11 and the upper outer infrared emitting electric heating tubes 9 are arranged in a staggered state of gradually increasing heights. The corresponding heating functions are formed by the cooperation of the electric heating tube protective cover and the lower outer infrared emitting electric heating tubes 10, the lower inner infrared emitting electric heating tubes 12, the upper inner infrared emitting electric heating tubes 11 and the upper outer infrared emitting electric heating tubes 9 installed therein. The component can be used with the wind turbine blades to be maintained to realize the heating operation of the leeward side of the wind turbine blades facing downward. The height telescopic adjustment rod includes a telescopic sleeve 17 and a telescopic rod 18. The bottom end of the telescopic rod 18 is fixedly connected with a connecting plate 19. The connecting plate 19 is fixedly connected to the mobile frame 1. The telescopic sleeve 17 is connected to the telescopic rod 18, and the telescopic sleeve 17 is fixedly connected with a covering limiter for auxiliary limiting of the telescopic rod 18 after adjustment relative to the telescopic sleeve 17. The top end of the telescopic sleeve 17 is connected to the angle adjustment shaft.

[0043] It should be further explained that the covering limit member includes a fixed ring 20, which is fixedly connected to the bottom end of the telescopic sleeve 17, and a plurality of guide tubes 21 are fixedly connected inside the fixed ring 20, and a plurality of guide tubes 21 are each provided with a clamping rod 22 and a pushing rod 23, and the ends of the plurality of clamping rods 22 away from the telescopic rod 18 are fixedly connected with elastic springs 24, and the ends of the plurality of elastic springs 24 away from the telescopic rod 18 are respectively fixedly connected with the plurality of pushing rods 23, a synchronous ring 25 is rotatably connected inside the fixed ring 20, and the synchronous ring 25 is fixedly connected with a plurality of linkage rods 26, and oblique bar holes 27 are provided on the plurality of pushing rods 23, and the plurality of linkage rods 26 are respectively connected in the plurality of oblique bar holes 27, a fixed shaft 28 is fixedly connected to the telescopic sleeve 17, and a swivel block 29 is rotatably connected to the fixed shaft 28, and the swivel block 29 is fixedly connected to a limiting spring 30, and a pushing block 31 is fixedly connected to the bottom end of the limiting spring 30, and an operating rod is connected to the pushing block 31 The spherical sleeve 34 is fixedly connected to the push block 31, and the end of the spherical section 33 away from the operating rod 32 is fixedly connected to the T-shaped hand-held frame 35, which is convenient for the rotation drive of the synchronous ring 25. The angle adjustment shaft includes an articulated seat 36, which is fixedly connected to the bottom end of the connecting sleeve 2, and an articulated rod 37 is arranged in the articulated seat 36. The articulated rod 37 is fixedly connected to the top end of the telescopic sleeve 17. A connecting hole 38 is provided on the articulated rod 37, and a hinge is connected in the connecting hole 38. The hinge is connected to the articulated seat 36. Through the cooperation of the mobile frame 1, the height telescopic adjustment rod and the angle adjustment shaft, a bracket installation structure corresponding to the electric heating tube protective cover is formed, so that the installation of the electric heating tube protective cover can be achieved while adjusting the bracket posture of the electric heating tube protective cover, and the posture adjustment range is wider.

[0044] It should be further explained that the hinged member includes a shaft sleeve 39, which is fixedly connected in the connecting hole 38, and a transfer hole 40 and an auxiliary hole 41 are provided on the hinge seat 36. The shaft sleeve 39 is rotatably connected in the transfer hole 40, and a threaded pressure rod 43 is connected to the shaft sleeve 39 through a thread. A limit cylinder 42 is provided on the threaded pressure rod 43, and the limit cylinder 42 is fixedly connected to the limit rod. The limit rod is slidably fitted in the auxiliary hole 41, and the length of the limit rod is longer than the depth of the auxiliary hole 41. The threaded pressure rod 43 is provided with a threaded pressure rod 43 for rotation. The step cap 44 pushed by the limiting cylinder 42 is pressed, and a pressing surface matching the limiting rod is provided on the hinged rod 37 to realize the limit after the rotation adjustment between the hinged seat 36 and the hinged rod 37. An adjustment drive assembly is installed on the connecting sleeve 2. The adjustment drive assembly is used for driving and adjusting the two diagonal inner frames 3. The adjustment drive assembly includes a rotating seat 13 and two rotating blocks 14. The rotating seat 13 is rotatably connected to the top of the connecting sleeve 2, and a tightening bolt is threadedly connected on the connecting sleeve 2. The tightening bolt is used to rotate the seat 13 relative to the connecting sleeve 2. The sleeve 2 is tightened and limited, and the two rotating blocks 14 are respectively rotatably connected to the bottom ends of the two diagonal inner frames 3. The rotating seat 13 is rotatably connected with a threaded rod 15, and two threaded sections 16 are arranged on the threaded rod 15. The threaded directions of the two threaded sections 16 are opposite. Threaded holes are opened on the two rotating blocks 14, and the two threaded holes are respectively threadedly connected with the two threaded sections 16. By adjusting the design of the driving component, the matching electric heating tube protective cover forms the adjustment of the heating area formed by the lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9. The heating operation area can be adjusted accordingly according to the maintenance area of ​​the wind turbine blade, which is more practical and convenient to operate. A temperature sensor 45 and a distance measuring sensor 46 are installed on the top of the rotating seat 13, which are respectively used to monitor the heating temperature change and distance change of the maintenance area in real time. Two universal wheels 47 and two rotating wheels 48 are installed at the bottom of the mobile frame 1 to facilitate the movement and steering of the mobile frame 1.

[0045] The lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9 in this embodiment are all conventional equipment purchased on the market and well known to those skilled in the art. In the present invention, we only use them and do not improve their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged and operated according to the requirements of their instruction manual, and will not be described in detail here.

[0046] In summary, the working process of the automatic control multi-angle heating device for wind turbine blade maintenance is as follows: when in use, the automatic control multi-angle heating device for wind turbine blade maintenance is first adjusted relative to the wind turbine blade that needs to be operated. During the adjustment process, the size and length-to-width ratio of the area enclosed by the two diagonal inner frames 3 and the two diagonal outer frames 4 are adjusted according to the area of ​​the wind turbine blade that needs to be heated. The size of the area enclosed by the two diagonal inner frames 3 and the two diagonal outer frames 4 is achieved by rotating the threaded rod 15 to adjust the relative distance of the two rotating blocks 14. The length-to-width ratio of the area enclosed by the two diagonal inner frames 3 and the two diagonal outer frames 4 is adjusted by rotating the rotating seat 13 relative to the connecting sleeve 2. Before the rotating seat 13 is rotated and adjusted, it is necessary to first rotate the tightening bolt to invalidate the tightening effect between the tightening bolt and the rotating seat 13. After the rotating seat 13 is rotated and adjusted, the tightening bolt is tightened again relative to the rotating seat 13, and then the loosening bolt is rotated relative to the shaft sleeve 39. The pattern pressure rod 43 makes the pressing effect of the limit rod on the pressing surface invalid, so that the relative rotation limiting effect between the hinge seat 36 and the hinge rod 37 is invalid. After the relative rotation adjustment between the hinge seat 36 and the hinge rod 37 is completed, the relative rotation limiting effect between the hinge seat 36 and the hinge rod 37 is enabled again to achieve the adjustment of the overall inclination angle of the lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9. Finally, by rotating the synchronous ring 25, the pushing effects of the multiple linkage rods 26 relative to the multiple pushing rods 23 are invalidated. In this state, the pressing and limiting effects of the multiple clamping rods 22 relative to the telescopic rod 18 are invalidated. The height and rotation angle of the telescopic sleeve 17 are adjusted relative to the telescopic rod 18 to achieve the adjustment of the overall height and inclination direction of the lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9.

[0047] Furthermore, after the adjustment is completed, the synchronizer ring 25 is rotated in the opposite direction relative to the direction of the aforementioned rotation of the synchronizer ring 25, so that the pushing effect of the linkage rod 26 on the pushing rod 23 takes effect. Under the linkage effect of the elastic spring 24 and the clamping rod 22, the pushing rod 23 will push and tighten the clamping rod 22 relative to the telescopic rod 18, so as to realize the limit position of the telescopic rod 18 after adjustment relative to the telescopic sleeve 17. After the adjustment is completed, the mobile frame 1 is moved relative to the maintenance of the wind turbine blade to realize the overall position adjustment of the lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9 relative to the wind turbine blade, so that the lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9 as a whole are relative to the wind turbine blade The blade has a suitable heating distance. During the adjustment process, the temperature sensor 45 and the distance sensor 46 form corresponding data detection to facilitate the adjustment. During the rotation of the synchronous ring 25, the limit spring 30 realizes the limit of the synchronous ring 25 after rotation in two directions, so as to achieve the stable maintenance of the relative free state and the relative limit state between the telescopic sleeve 17 and the telescopic rod 18 without human interference. Finally, the power of the lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9 is turned on, so that the lower outer infrared emitting electric heating tube 10, the lower inner infrared emitting electric heating tube 12, the upper inner infrared emitting electric heating tube 11 and the upper outer infrared emitting electric heating tube 9 are energized to generate heat, thereby realizing the heating operation of the maintenance area on the leeward side of the wind turbine blade.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic control multi-angle heating device for wind turbine blade maintenance, comprising an electric heating tube protective cover, characterized in that: The electric heating tube protective cover also comprises a movable frame (1), wherein a height telescopic adjustment rod is installed on the movable frame (1), and an angle adjustment shaft is installed at the top end of the height telescopic adjustment rod. The electric heating tube protective cover comprises a connecting sleeve (2), two diagonal inner frames (3) and two diagonal outer frames (4), wherein the connecting sleeve (2) is installed on the angle adjustment shaft, and the connecting sleeve (2) is slidably connected to two telescopic bent plates (5), and the two telescopic bent plates (5) are fixedly connected to a connecting frame (6), and the two diagonal inner frames (3) are respectively slidably connected to the two connecting frames (6), and the two diagonal outer frames (4) are respectively provided with a first connecting notch (7) and a second connecting notch (8), and the two diagonal inner frames (3) are respectively slidably connected to the two first connecting notches (7), and the two diagonal inner frames (3) are respectively slidably connected to the two first connecting notches (7), and the two diagonal inner frames (3) are respectively slidably connected to the two first connecting notches (7). They are respectively slidably connected to the two second connection slots (8); a plurality of upper outer infrared emitting electric heating tubes (9) are installed in one diagonal outer frame (4); a plurality of lower outer infrared emitting electric heating tubes (10) are installed in the other diagonal outer frame (4); a plurality of upper inner infrared emitting electric heating tubes (11) are installed in one diagonal inner frame (3); a plurality of lower inner infrared emitting electric heating tubes (12) are installed in the other diagonal inner frame (3); the lower outer infrared emitting electric heating tubes (10), the lower inner infrared emitting electric heating tubes (12), the upper inner infrared emitting electric heating tubes (11) and the upper outer infrared emitting electric heating tubes (9) are arranged in a staggered state with their heights gradually increasing; an adjustment drive assembly is installed on the connection sleeve (2); the adjustment drive assembly is used for driving and adjusting the two diagonal inner frames (3).

2. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 1 is characterized in that: The adjustment drive assembly comprises a rotating seat (13) and two rotating blocks (14); the rotating seat (13) is rotatably connected to the top end of the connecting sleeve (2); and a locking bolt is threadedly connected to the connecting sleeve (2); the locking bolt is used for locking and limiting the rotating seat (13) relative to the connecting sleeve (2); the two rotating blocks (14) are respectively rotatably connected to the bottom ends of the two diagonal inner frames (3); the rotating seat (13) is rotatably connected to a threaded rod (15); two threaded sections (16) are arranged on the threaded rod (15); the threaded directions of the two threaded sections (16) are opposite; threaded holes are provided on the two rotating blocks (14); the two threaded holes are respectively threadedly connected to the two threaded sections (16).

3. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 2 is characterized in that: The height telescopic adjustment rod comprises a telescopic sleeve (17) and a telescopic rod (18); the bottom end of the telescopic rod (18) is fixedly connected to a connecting plate (19); the connecting plate (19) is fixedly connected to the moving frame (1); the telescopic sleeve (17) is connected to the telescopic rod (18); and the telescopic sleeve (17) is fixedly connected to a covering limiting member for auxiliary limiting of the telescopic rod (18) after adjustment relative to the telescopic sleeve (17); and the top end of the telescopic sleeve (17) is connected to the angle adjustment shaft.

4. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 3 is characterized in that: The covering limit member comprises a fixing ring (20), wherein the fixing ring (20) is fixedly connected to the bottom end of the telescopic sleeve (17), a plurality of guide tubes (21) are fixedly connected inside the fixing ring (20), a plurality of guide tubes (21) are each provided with a clamping rod (22) and a pushing rod (23), a plurality of ends of the clamping rods (22) away from the telescopic rod (18) are each fixedly connected to an elastic spring (24), a plurality of ends of the elastic springs (24) away from the telescopic rod (18) are respectively fixedly connected to the plurality of pushing rods (23), a synchronizing ring (25) is rotatably connected inside the fixing ring (20), the synchronizing ring (25) is fixedly connected to a plurality of linkage rods (26), a plurality of pushing rods (23) are each provided with an oblique bar hole (27), and a plurality of linkage rods (26) are respectively connected to the plurality of oblique bar holes (27).

5. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 4 is characterized in that: The telescopic sleeve (17) is fixedly connected to a fixed shaft (28), the fixed shaft (28) is rotatably connected to a swivel block (29), the swivel block (29) is fixedly connected to a limit spring (30), the bottom end of the limit spring (30) is fixedly connected to a push block (31), the push block (31) is connected to an operating rod (32), and the operating rod (32) is fixedly connected to the synchronizer ring (25).

6. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 5 is characterized in that: A spherical section (33) is fixedly connected to the operating rod (32), a spherical sleeve (34) is externally connected to the spherical section (33), the spherical sleeve (34) is fixedly connected to the pushing block (31), and a T-shaped hand-held frame (35) is fixedly connected to one end of the spherical section (33) away from the operating rod (32).

7. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 6 is characterized in that: The angle adjustment shaft comprises an articulated seat (36), wherein the articulated seat (36) is fixedly connected to the bottom end of the connecting sleeve (2), an articulated rod (37) is arranged inside the articulated seat (36), and the articulated rod (37) is fixedly connected to the top end of the telescopic sleeve (17), and a connecting hole (38) is provided on the articulated rod (37), and an articulated component is connected inside the connecting hole (38), and the articulated component is connected to the articulated seat (36).

8. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 7 is characterized in that: The hinged part comprises a shaft sleeve (39), the shaft sleeve (39) is fixedly connected in the connecting hole (38), the hinge seat (36) is provided with a transfer hole (40) and an auxiliary hole (41), the shaft sleeve (39) is rotatably connected in the transfer hole (40), the shaft sleeve (39) is internally threadedly connected with a threaded pressure rod (43), a limiting cylinder (42) is arranged on the threaded pressure rod (43), the limiting cylinder (42) is fixedly connected with the limiting rod, the limiting rod is slidably fitted in the auxiliary hole (41), and the length of the limiting rod is longer than the depth of the auxiliary hole (41), the threaded pressure rod (43) is provided with a stepped cap (44) for pressing and pushing the limiting cylinder (42), and the hinged rod (37) is provided with a pressing surface matching the limiting rod.

9. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 8, characterized in that: A temperature sensor (45) and a distance sensor (46) are installed on the top of the rotating seat (13), which are used to monitor the heating temperature change and distance change of the maintenance area in real time respectively.

10. The automatic control multi-angle heating device for wind turbine blade maintenance according to claim 9, characterized in that: Two universal wheels (47) and two rotating wheels (48) are installed at the bottom end of the movable frame (1).

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