Wind driven generator prosthetic beam and wind wheel turning method

Abstract

The invention relates to a wind driven generator prosthetic beam and a wind wheel turning method, and belongs to the field of wind power generation. The wind driven generator prosthetic beam comprises a beam body, a flange adapter is fixedly arranged at one end of the beam body in the length direction, a guide rod is fixedly arranged at the end of the flange adapter, and a U-shaped frame used for hoisting is arranged in the middle of the beam body; the two ends of the U-shaped frame are hinged to the two side walls, in the width direction, of the beam body respectively, one end of a hydraulic oil cylinder is further hinged to the side wall, in the width direction, of the beam body, and the other end of the hydraulic oil cylinder is hinged to the U-shaped frame. The invention has the following beneficial effects: when the blade or the wind wheel needs to be replaced, the prosthetic beam is mounted on the wind wheel, and the wind wheel is turned and the load is adjusted through the beam body, so that the blade or the wind wheel is convenient to replace, the potential safety hazard is reduced, and the problems of deflection and unbalance of the wind wheel, slippage of a blade suspension point and the like are avoided.

Description

Technical Field

[0001] The invention relates to the field of wind power generation, in particular to a prosthetic beam of a wind power generator and a wind wheel turning method. Background Art

[0002] After nearly 20 years of rapid development, the domestic wind power industry has achieved remarkable results. However, in the early stage of rapid development, due to insufficient design awareness and neglect of prognosis, early wind turbines usually did not have automatic cranking functions. When maintaining and replacing parts, the convenience and operability were far inferior to those of newly installed units in recent years.

[0003] In the existing technology, the wind rotor can only be rotated by pulling with a crane or forklift to make the damaged blade reach a position that is convenient for replacement, and then a double-machine lifting method that occupies a large area is used to remove the damaged blade and replace it with a new one. This method not only has high temporary land acquisition costs, but is also prone to artificial damage to intact blades, and is more likely to cause lifting accidents caused by wind rotor deflection imbalance and lifting point slippage during the process of pulling the blades. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a prosthetic beam and a wind wheel turning method capable of turning a wind turbine generator set without a turning function.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a prosthetic beam of a wind turbine generator, comprising a beam body, a flange adapter being fixedly provided at one end of the beam body in the length direction, a guide rod being fixedly provided at the end of the flange adapter, a U-shaped frame for lifting being provided in the middle of the beam body, two ends of the U-shaped frame being respectively hinged to two side walls in the width direction of the beam body, one end of a hydraulic cylinder being also hinged to the side wall in the width direction of the beam body, and the other end of the hydraulic cylinder being hinged to the U-shaped frame.

[0006] The beneficial effects of the present invention are as follows: when the blades or the wind wheel need to be replaced, a prosthetic beam is installed on the wind wheel, and the wind wheel is turned and the load is adjusted through the beam body, which facilitates the replacement of the blades or the wind wheel, reduces safety hazards, and avoids problems such as wind wheel deflection imbalance and blade suspension point slippage.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a hanging frame is fixedly provided in the middle of the U-shaped frame, and the hanging frame is open on one side away from the U-shaped frame. A first hydraulic push rod is fixedly provided inside the hanging frame, and the telescopic end of the first hydraulic push rod is extended to block the opening side of the hanging frame.

[0009] The beneficial effect of adopting the above further solution is that automatic hooking and automatic unhooking are completed through the extension and retraction of the first hydraulic push rod, which is easy to use.

[0010] Furthermore, a locking pin seat is hinged at one end of the U-shaped frame, and the locking pin seat is fixedly connected to the beam body. A second hydraulic push rod is rotatably provided on the locking pin seat, and the telescopic end of the second hydraulic push rod passes through the beam body and is rotatably connected to the other end of the U-shaped frame.

[0011] The beneficial effects of adopting the above further solution are: it is easy to connect the U-shaped frame and the beam body, and it is quick to disassemble and replace.

[0012] Furthermore, a mechanical locking pin is detachably installed between the locking pin seat and the U-shaped frame.

[0013] The beneficial effect of adopting the above further solution is: it is used to lock the U-shaped frame in a non-working state to prevent rotation.

[0014] Furthermore, a hydraulic station and a control cabinet are arranged on the beam body.

[0015] The beneficial effect of adopting the above further solution is that the movement of the hydraulic element can be remotely controlled with a high degree of automation.

[0016] Furthermore, a battery is arranged in the beam body, and the battery is electrically connected to the control cabinet.

[0017] The beneficial effect of adopting the above further solution is: power is supplied during hoisting to control the operation of various hydraulic components.

[0018] Furthermore, a counterweight beam is detachably mounted on one end of the beam body away from the flange adapter.

[0019] The beneficial effect of adopting the above further solution is: by increasing or reducing the number of counterweight beams, the center of gravity and weight of the beam body are changed.

[0020] A method for turning a wind wheel, using any one of the wind turbine prosthetic beams to turn the wind wheel, comprises the following steps:

[0021] S1. Remove the damaged blades from the wind wheel;

[0022] S2, the crane hook is extended into the lifting frame, and the first hydraulic push rod extends out to automatically hook;

[0023] S3, the crane hoists the beam body, and during the hoisting process, the second hydraulic push rod is extended and retracted to adjust the angle of the beam body to align with the installation position of the wind rotor blades;

[0024] S4, fixing the flange adapter to the blade mounting position of the wind wheel;

[0025] S5. The crane moves again, and the second hydraulic push rod is extended and retracted to drive the wind wheel to rotate and turn the machine.

[0026] The beneficial effects of adopting the above scheme are: facilitating the turning of the wind wheel and adjusting the load, having a high degree of automation, reducing labor intensity and improving work efficiency.

[0027] Furthermore, the length of the beam is 1 / 3 of the length of the blade.

[0028] The beneficial effects of adopting the above further solution are: reducing the volume and facilitating installation.

[0029] Furthermore, the weight of the beam is 1.5 to 2 times that of the blade.

[0030] The beneficial effect of adopting the above further solution is: the specific weight is changed by the counterweight beam to ensure the balance of the center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front view of the beam body of the present invention.

[0032] Figure 2 It is a top view of the beam body of the present invention.

[0033] Figure 3 It is a schematic diagram of a U-shaped frame of the present invention.

[0034] Figure 4 It is a schematic diagram of the hanging frame of the present invention.

[0035] Figure 5 This is a diagram of the turning gear working state of the present invention.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Beam; 2. Flange adapter; 3. Guide rod; 4. U-shaped frame; 5. Hydraulic cylinder; 6. Lifting frame; 7. First hydraulic push rod; 8. Locking pin seat; 9. Second hydraulic push rod; 10. Mechanical locking pin; 11. Hydraulic station; 12. Control cabinet; 13. Counterweight beam; 14. Wind wheel; 15. Sling; 16. Shackle; 17. Lifting ring; 18. Blade. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] Example 1

[0040] like Figures 1 to 4As shown, a prosthetic beam of a wind turbine generator includes a beam body 1, one end of the beam body 1 in the length direction is fixedly provided with a flange adapter 2, the end of the flange adapter 2 is fixedly provided with a guide rod 3, a U-shaped frame 4 for lifting is arranged in the middle of the beam body 1, both ends of the U-shaped frame 4 are respectively hinged to the two side walls in the width direction of the beam body 1, one end of a hydraulic cylinder 5 is also hinged to the side wall in the width direction of the beam body 1, and the other end of the hydraulic cylinder 5 is hinged to the U-shaped frame 4.

[0041] The beneficial effect of this embodiment is that when the blades 18 or the wind wheel 14 need to be replaced, a prosthetic beam is installed on the wind wheel 14, and the wind wheel 14 is turned and the load is adjusted through the beam body 1, which facilitates the replacement of the blades 18 or the wind wheel 14, reduces safety hazards, and avoids problems such as unbalanced deflection of the wind wheel and slippage of the blade suspension point.

[0042] In this embodiment, the damaged blade 18 is first disassembled by conventional means, but the installation position of the side blade faces the sky, which is not convenient for docking with a new blade 18;

[0043] Connect the crane hook to the U-shaped frame 4 for lifting, extend and retract the hydraulic cylinder 5, change the gravity center angle of the beam body 1, so that the flange adapter 2 of the beam body 1 can be docked to the blade installation position, and align the holes with the guide rod 3. After installation, the wind wheel 14 is restored to balance;

[0044] At this time, the hydraulic cylinder 5 is extended and retracted, and in coordination with the movement of the crane hook and the weight of the beam body 1 itself, the wind wheel 14 can be driven to rotate and turn, so as to replace other blades 18 or replace the wind wheel 14.

[0045] Example 2

[0046] like Figure 3 to Figure 4 As shown, preferably, on the basis of Example 1, a hanging frame 6 is fixedly provided in the middle of the U-shaped frame 4, and the hanging frame 6 is opened on one side away from the U-shaped frame 4, and a first hydraulic push rod 7 is fixedly provided inside the hanging frame 6, and the telescopic end of the first hydraulic push rod 7 is used to block the open side of the hanging frame 6 after being extended.

[0047] The beneficial effect of adopting the preferred solution in the above embodiment is that automatic hooking and automatic unhooking are completed by telescoping the first hydraulic push rod 7, which is convenient to use.

[0048] In this embodiment, in the initial state, the first hydraulic push rod 7 is retracted, the top of the lifting belt 15 is connected to the crane, the lower part of the lifting belt 15 is connected to the shackle 16, the shackle 16 is connected to the lifting ring 17, the lifting ring 17 is extended into the lifting frame 6, and then the first hydraulic push rod 7 is extended and stuck in the lifting ring 17, the lifting frame 6 and the first hydraulic push rod 7 form a structure similar to a U-shaped lock, and the automatic hook is completed;

[0049] When unhooking is required, the first hydraulic push rod 7 is retracted again, and the lifting ring 17 can be detached automatically.

[0050] Example 3

[0051] like Figure 3 to Figure 4 As shown, preferably, on the basis of Embodiment 1-2, a locking pin seat 8 is hinged at one end of the U-shaped frame 4, and the locking pin seat 8 is fixedly connected to the beam body 1, and a second hydraulic push rod 9 is rotatably provided on the locking pin seat 8, and the telescopic end of the second hydraulic push rod 9 passes through the beam body 1 and is rotatably connected to the other end of the U-shaped frame 4.

[0052] Preferably, a mechanical locking pin 10 is detachably installed between the locking pin seat 8 and the U-shaped frame 4 .

[0053] The beneficial effects of adopting the preferred solution in the above embodiment are: it is easy to connect the U-shaped frame 4 and the beam body 1, and it is quick to disassemble and replace.

[0054] In this embodiment, both ends of the U-shaped frame 4 are clamped on the beam body 1, and the second hydraulic push rod 9 is installed at one end of the U-shaped frame 4. When the second hydraulic push rod 9 is extended, the end of the second hydraulic push rod 9 passes through the beam body 1 and is connected to the other end of the U-shaped frame 4. The rod portion of the second hydraulic push rod 9 serves as a pin column for rotating the U-shaped frame 4 and the beam body 1.

[0055] When the second hydraulic push rod 9 is retracted, the U-shaped frame 4 and the beam body 1 lose their restraint, and the U-shaped frame 4 can be removed from the beam body 1 .

[0056] In addition, the mechanical locking pin 10 is used to lock the U-shaped frame 4 in a non-working state to prevent rotation.

[0057] Example 4

[0058] like Figure 2 As shown, preferably, on the basis of embodiments 1-3, a hydraulic station 11 and a control cabinet 12 are provided on the beam body 1.

[0059] Preferably, a battery is provided in the beam body 1 , and the battery is electrically connected to the control cabinet 12 .

[0060] The beneficial effect of adopting the preferred solution in the above embodiment is that the movement of the hydraulic element can be remotely controlled with a high degree of automation.

[0061] In this embodiment, the hydraulic station 11 is connected to the hydraulic cylinder 5, the first hydraulic push rod 7 and the second hydraulic push rod 9, and the control cabinet 12 controls the start and stop of each component.

[0062] A storage battery is arranged inside the beam body 1, which can supply power to the control cabinet 12 normally even at high altitudes to ensure normal operation.

[0063] Example 5

[0064] like Figure 1 As shown, preferably, on the basis of embodiments 1-4, a counterweight beam 13 is detachably mounted on one end of the beam body 1 away from the flange adapter 2 .

[0065] The beneficial effect of adopting the preferred solution in the above embodiment is: by increasing or decreasing the number of counterweight beams 13, the center of gravity and weight of the beam body 1 are changed.

[0066] Example 6

[0067] like Figure 5 As shown, preferably, based on embodiments 1-5, a method for turning a wind wheel, using any of the wind turbine prosthetic beams described above for turning, comprises the following steps:

[0068] S1, dismantling the damaged blades on the wind wheel 14;

[0069] S2, the crane hook is inserted into the lifting frame 6, and the first hydraulic push rod 7 is extended to automatically hook;

[0070] S3, the crane hoists the beam body 1, and during the hoisting process, the second hydraulic push rod 9 is extended and retracted to adjust the angle of the beam body 1 to align with the blade installation position of the wind wheel 14;

[0071] S4, fixing the flange adapter 2 to the blade mounting position of the wind wheel 14;

[0072] S5, the crane moves again, and the wind wheel 14 is driven to rotate and turn in coordination with the extension and retraction of the second hydraulic push rod 9.

[0073] The beneficial effects of adopting the preferred solution in the above embodiment are: facilitating the turning of the wind wheel 14 and adjusting the load, having a high degree of automation, reducing labor intensity, and improving work efficiency.

[0074] Specifically, turning means that when the motor is not working, external force is used to rotate the wind wheel 14 for several turns to confirm whether the load of the wind wheel 14 is balanced. This technical solution is mainly used for wind turbines without automatic turning function. When any blade 18 is damaged, under the influence of gravity, the wind wheel 14 will naturally stop in a state where the broken side of the blade 18 faces the sky and the other two blades 18 are in an "eight" shape. At this time, the center of mass of the wind wheel 14 will be eccentrically loaded, making it inconvenient to replace the blade 18, and it is impossible to replace the wind wheel 14.

[0075] In the present embodiment, in the above situation, the damaged blade 18 is firstly removed by other means (for example, after the wind wheel 14 rotates, the wind wheel 14 is fixed at an angle suitable for removal by the wind wheel locking pin). After the blade 18 is removed, the other intact blades 18 fall down due to gravity. At this time, the installation position of the blade faces the sky due to gravity, while the conventional blade 18 needs to be hoisted horizontally. During installation, the flange surface of the blade installation position also needs to be perpendicular to the ground, and it is impossible to dock at all.

[0076] When the beam body 1 of the present solution is used, the second hydraulic push rod 9 can be extended and retracted to adjust the angle of the beam body 1 in the air, so that the flange adapter 2 of the beam body 1 can be more easily docked to the blade installation position. After the installation is completed, the wind wheel 14 is restored to balance;

[0077] While keeping the beam body 1 hoisted by the hook, the second hydraulic push rod 9 is retracted and extended to cooperate with the deadweight of the beam body 1, which can drive the wind wheel 14 to rotate and adjust the installation positions of other blades to an angle suitable for installing blades 18, so as to facilitate the replacement of other blades 18. The wind wheel 14 becomes balanced at this time, which is also convenient for the subsequent disassembly of the wind wheel 14.

[0078] In addition, when the wind wheel 14 and the blades 18 are completely disassembled and need to be reinstalled, the wind wheel 14 and the beam 1 can be installed first, and the crane drives the beam 1 to move, and cooperates with the extension and retraction of the second hydraulic push rod 9 to drive the wind wheel 14 to rotate, and adjust the installation positions of other blades to an angle suitable for installing the blades 18.

[0079] Example 7

[0080] like Figure 5 As shown, preferably, based on embodiments 1-6, the length of the beam body 1 is 1 / 3 of the blade 18.

[0081] Preferably, the weight of the beam body 1 is 1.5 to 2 times that of the blade 18 .

[0082] In this embodiment, the volume is reduced to facilitate installation, and the specific weight is changed by the counterweight beam 13 to ensure the balance of the center of gravity.

[0083] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0084] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0085] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0088] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A prosthetic beam for a wind turbine generator, characterized in that: The invention comprises a beam body (1), wherein a flange adapter (2) is fixedly provided at one end of the beam body (1) in the length direction, a guide rod (3) is fixedly provided at the end of the flange adapter (2), a U-shaped frame (4) for hoisting is arranged in the middle of the beam body (1), the two ends of the U-shaped frame (4) are respectively hinged to the two side walls in the width direction of the beam body (1), one end of a hydraulic cylinder (5) is also hinged to the side wall in the width direction of the beam body (1), and the other end of the hydraulic cylinder (5) is hinged to the U-shaped frame (4).

2. A wind turbine prosthetic beam according to claim 1, characterized in that: A hanging frame (6) is fixedly provided in the middle of the U-shaped frame (4), and one side of the hanging frame (6) is open away from the U-shaped frame (4). A first hydraulic push rod (7) is fixedly provided inside the hanging frame (6), and the telescopic end of the first hydraulic push rod (7) is used to block the open side of the hanging frame (6) after being extended.

3. A wind turbine prosthetic beam according to claim 1, characterized in that: One end of the U-shaped frame (4) is hinged with a locking pin seat (8), and the locking pin seat (8) is fixedly connected to the beam body (1). A second hydraulic push rod (9) is rotatably arranged on the locking pin seat (8), and the telescopic end of the second hydraulic push rod (9) passes through the beam body (1) and is rotatably connected to the other end of the U-shaped frame (4).

4. A prosthetic beam for a wind turbine generator according to claim 3, characterized in that: A mechanical locking pin (10) is detachably mounted between the locking pin seat (8) and the U-shaped frame (4).

5. A prosthetic beam for a wind turbine generator according to claim 1, characterized in that: A hydraulic station (11) and a control cabinet (12) are arranged on the beam body (1).

6. A prosthetic beam for a wind turbine generator according to claim 5, characterized in that: A storage battery is arranged in the beam body (1), and the storage battery is electrically connected to the control cabinet (12).

7. A prosthetic beam for a wind turbine generator according to claim 1, characterized in that: A counterweight beam (13) is detachably mounted on one end of the beam body (1) away from the flange adapter (2).

8. A wind wheel turning method, characterized in that: Using the wind turbine prosthetic beam as claimed in any one of claims 1 to 7 to perform turning includes the following steps: S1, removing the damaged blades on the wind wheel (14); S2, the crane hook is inserted into the lifting frame (6), and the first hydraulic push rod (7) is extended to automatically hook the hook; S3, using a crane to hoist the beam body (1), and during the hoisting process, the second hydraulic push rod (9) is extended and retracted to adjust the angle of the beam body (1) to align with the installation position of the blades of the wind wheel (14); S4, fixing the flange adapter (2) to the blade mounting position of the wind wheel (14); S5, the crane moves again, and the wind wheel (14) is driven to rotate and turn in coordination with the extension and retraction of the second hydraulic push rod (9).

9. A wind wheel turning method according to claim 8, characterized in that: The length of the beam body (1) is 1 / 3 of the length of the blade.

10. A wind wheel turning method according to claim 9, characterized in that: The weight of the beam body (1) is 1.5 to 2 times that of the blade.

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