Pitch motor removal tool

Abstract

The utility model relates to the technical field of separation generators, and discloses a pitch motor disassembly tool, including a hanger and a hoisting device; the hanger includes a rigid connector and at least three rigid hangers fixedly connected to the lower end of the rigid connector, and the lower parts of the plurality of rigid hangers can be spaced and fitted outside the pitch motor, and can be detachably connected to the pitch motor; the hoisting device is connected to the upper end of the rigid connector, and is used to vertically lift the hanger. The solution of the utility model can be applied to the limited space in the wind turbine hub, and can make the process of removing the pitch motor from the pitch reducer faster and more labor-saving, significantly improving the operating efficiency and convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine generators, in particular to a disassembly tool for a variable pitch motor. Background Art

[0002] In the wind turbine pitch system, the pitch reducer is located below the pitch motor. Since the pitch motor and the reducer are connected by a transmission shaft with a length of 10-15 cm through a transmission sleeve, when disassembling the motor, it is usually necessary to manually use a jacking screw to push out a certain height from one side of the reducer to ensure that the motor is lifted vertically, and then the pitch motor and the reducer can be separated smoothly.

[0003] When disassembling the variable pitch motor of the CRRC 2.5MW wind turbine, the traditional method of lifting it with screws takes a long time due to the large installation location limitations. In addition, due to the large weight of the variable pitch motor itself, this lifting method is also quite laborious and poses a safety hazard. Therefore, in order to solve this problem, it is particularly important to design a special variable pitch motor removal tool. Summary of the invention

[0004] In view of this, the present application proposes a new type of pitch motor disassembly tool, which uses a lifting method to separate the pitch motor and the reducer. This tool does not need to use a push screw to push out the pitch motor from one side of the pitch reducer, but directly lifts it vertically from the top of the pitch motor. Through this innovative design, it aims to simplify the disassembly process, improve efficiency, reduce labor intensity, and achieve safe and fast separation of the pitch motor and the reducer.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A variable pitch motor disassembly tool comprises a hanger and a lifting device; the hanger comprises a rigid connector and at least three rigid hangers fixedly connected to the lower end of the rigid connector, the lower portions of the plurality of rigid hangers can be spaced apart and fittedly arranged on the outside of the variable pitch motor, and can be detachably connected to the variable pitch motor; the lifting device is connected to the upper end of the rigid connector, and is used for vertically lifting the hanger.

[0007] Optionally, the hanger includes four rigid hangers, and two of the four rigid hangers are symmetrically arranged.

[0008] Optionally, the lifting device includes a support frame and a lifter, one end of the support frame can be connected to a fixed support plate in the fan hub through a fastener, and the other end is connected to the upper end of the lifter, and the lower end of the lifter is connected to the upper end of the rigid connector.

[0009] Optionally, the support frame includes a fixed part and an adjustable part, the fixed part can be connected to the fixed support plate by a fastener, one end of the adjustable part is movably connected to the fixed part so as to adjust the relative position of the other end of the adjustable part and the fixed part, and the other end of the adjustable part is connected to the upper end of the lifter.

[0010] Optionally, the fixed part includes a connecting plate and a first arm, and the adjustable part includes a second arm and a third arm. The connecting plate can be connected to the fixed support plate by a fastener, one end of the first arm is fixedly connected to the connecting plate, the other end of the first arm is hingedly connected to one end of the second arm, the other end of the second arm is connected to the upper end of the lifter, one end of the third arm is hinged to the first arm, and the other end is hinged to the second arm. The third arm is configured as a telescopic rod to adjust the angle between the second arm and the first arm.

[0011] Optionally, the third support arm includes an inner rod and an outer rod, the outer rod is a hollow rod, and at least a portion of the outer rod is sleeved on the outside of the inner rod, the side wall of the inner rod is provided with an inner connecting hole passing through the inner rod, and the side wall of the outer rod is provided with a plurality of outer connecting holes spaced apart along the length direction of the outer rod, and the outer rod is fixedly connected to the inner rod by a fastener that passes through the inner connecting hole and one of the outer connecting holes at the same time.

[0012] Optionally, the third support arm includes an inner rod and an outer rod, both of which are hollow rods, and at least a portion of the outer rod is sleeved on the outside of the inner rod, and the side wall of the inner rod is provided with an inner connecting seam extending along the length direction of the inner rod, and a nut is fixedly connected to the side wall of the outer rod, and an external connecting hole coaxial with the nut is also provided on the side wall of the outer rod, a bolt is threaded in the nut, and the bolt passes through the external connecting hole and the inner connecting seam to press the inner rod into the outer rod.

[0013] Optionally, the second arm is also provided with a telescopic rod.

[0014] Optionally, the lifter is a hand chain hoist.

[0015] Optionally, a reinforcing rod is further connected between the connecting plate and the first supporting arm.

[0016] In the variable pitch motor disassembly tool provided by the embodiment of the utility model, since the hanger is equipped with at least three rigid hangers, and the lower parts of the multiple rigid hangers can be spaced apart and fitted on the outside of the variable pitch motor, the variable pitch motor can be confined in the cage-shaped cover formed by the hanger, so that the variable pitch motor is not easy to tilt when it is lifted by the hanger. Through the cooperation of the hanger and the lifting device, it can basically ensure that the variable pitch motor is pulled out vertically from the reducer, so that the variable pitch motor can be safely and smoothly separated from the variable pitch reducer, and there is no need to use a top screw to push the variable pitch motor out from one side of the variable pitch reducer. This design can not only be suitable for the limited space in the wind turbine hub, but also make the disassembly process faster and more labor-saving, significantly improving the operating efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a pitch motor disassembly tool in use provided in a specific embodiment of the utility model;

[0019] Figure 2 A structural schematic diagram of a hanger provided in a specific implementation manner of the utility model;

[0020] Figure 3 This is one of the structural schematic diagrams of a lifting device provided in a specific implementation mode of the utility model;

[0021] Figure 4 The second structural schematic diagram of the lifting device provided by a specific implementation method of the utility model;

[0022] Figure 5 A schematic diagram of the structure of the connection between the inner rod and the outer rod provided in a specific implementation manner of the utility model;

[0023] Figure 6 for Figure 5 AA cross-sectional structure schematic diagram.

[0024] The following are marked in the accompanying drawings:

[0025] 100, support frame; 101, connecting plate; 1011, connecting hole; 102, first arm; 103, second arm; 104, third arm; 105, third lifting ring; 106, reinforcing rod; 1, inner rod; 12, inner connecting seam; 2, outer rod; 21, outer connecting hole; 3, fastener; 4, nut; 5, bolt;

[0026] 200, hanger; 201, rigid connector; 202, rigid hanger; 203, first lifting ring; 204, second lifting ring;

[0027] 300, pitch motor;

[0028] 400, lifter;

[0029] 500.Fix the support plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Please refer to Figures 1 to 6 , Figure 1 A schematic diagram of the structure of a pitch motor disassembly tool in use provided in a specific embodiment of the utility model; Figure 2 A structural schematic diagram of a hanger provided in a specific implementation manner of the utility model; Figure 3 This is one of the structural schematic diagrams of a lifting device provided in a specific implementation mode of the utility model; Figure 4 The second structural schematic diagram of the lifting device provided by a specific implementation method of the utility model; Figure 5 A schematic diagram of the structure of the connection between the inner rod and the outer rod provided in a specific implementation manner of the utility model; Figure 6 for Figure 5 AA cross-sectional structure schematic diagram.

[0032] In a specific embodiment, the pitch motor disassembly tool provided in the embodiment of the utility model includes a hanger 200 and a lifting device. The hanger 200 includes a rigid connector 201 and at least three rigid hangers 202 fixedly connected to the lower end of the rigid connector 201, and the lower portions of the plurality of rigid hangers 202 can be spaced apart and fitted on the outside of the pitch motor 300. Preferably, the lower portions of the plurality of rigid hangers 202 can be spaced apart and fitted on the outside of the pitch motor 300 as evenly as possible. A first lifting ring 203 cooperating with the lifting device is provided at the upper end of the rigid connector 201, and a second lifting ring 204 detachably connected to a hook on the pitch motor 300 is provided at the lower end of the rigid hanger 202. The lifting device is connected to the first lifting ring 203 at the upper end of the rigid connector 201, and is used to vertically lift the hanger 200.

[0033] In the variable pitch motor disassembly tool provided by the embodiment of the utility model, since the hanger 200 is equipped with at least three rigid hangers 202, and the lower parts of the multiple rigid hangers 202 can be spaced apart and fitted on the outside of the variable pitch motor 300, the variable pitch motor 300 can be confined in the cage-shaped cover formed by the hanger 200, so that the variable pitch motor 300 is not easy to tilt when being lifted by the hanger 200. Through the cooperation of the hanger 200 and the lifting device, it can basically ensure that the variable pitch motor 300 is pulled out vertically from the reducer, so that the variable pitch motor 300 can be safely and smoothly separated from the variable pitch reducer, and there is no need to use a top screw to push the variable pitch motor out from one side of the variable pitch reducer. This design can not only be suitable for the limited space in the wind turbine hub, but also make the disassembly process faster and more labor-saving, significantly improving the operating efficiency and convenience.

[0034] In some embodiments, Figure 2 As shown, the hanger 200 includes four rigid hangers 202, and two rigid hangers 202 separated from each other are symmetrically arranged among the four rigid hangers 202, so that the hanger 200 can be kept balanced as a whole during lifting, and the two rigid hangers 202 separated from each other can also be conveniently made by bending the same steel bar. Specifically, a part of the upper part of the rigid hanger 202 is vertically bent toward the rigid connector 201 located in the center, so that the rigid hanger 202 is L-shaped, which is convenient for manufacturing.

[0035] Preferably, two adjacent rigid hangers 202 among the four rigid hangers 202 are 90° apart, that is, the lower parts of the four rigid hangers 202 are evenly distributed and fitted on the outside of the pitch motor 300, which can further ensure the overall balance of the hanger 200 during lifting.

[0036] In some embodiments, Figure 3 or Figure 4 As shown, the hoisting device includes a support frame 100 and a lifter 400. One end of the support frame 100 can be connected to the fixed support plate 500 in the wind turbine hub through a fastener, and the other end is connected to the upper end of the lifter 400. The lower end of the lifter 400 is connected to the upper end of the rigid connector 201. Thus, a simple and reliable hoisting device can be formed by the support frame 100 and the lifter 400 fixedly connected in the wind turbine hub, which can facilitate the hoisting of the hanger 200 and the pitch motor 300 in the wind turbine hub.

[0037] Based on the above embodiments, Figure 3 or Figure 4As shown, the support frame 100 includes a fixed portion and an adjustable portion, the fixed portion can be connected to the fixed support plate 500 by a fastener, one end of the adjustable portion is movably connected to the fixed portion, so as to adjust the relative position of the other end of the adjustable portion and the fixed portion, and the other end of the adjustable portion is connected to the upper end of the lifter 400. Thus, the connection position between the upper end of the hanger 200 and the lifter 400 is adjustable, which facilitates the vertical lifting of the hanger 200 at different positions after adjustment, so that the adaptability of the pitch motor disassembly tool provided by the embodiment of the utility model is better.

[0038] Based on the above embodiments, specifically, Figure 3 or Figure 4 As shown, the fixed part includes a connecting plate 101 and a first arm 102, and the adjustable part includes a second arm 103 and a third arm 104. The connecting plate 101 is provided with a connecting hole 1011, and a fastener can be passed through the connecting hole 1011 to connect with the fixed support plate 500. One end of the first arm 102 is fixedly connected to the connecting plate 101, and the other end of the first arm 102 is hingedly connected to one end of the second arm 103. The other end of the second arm 103 is connected to a third lifting ring 105, and the third lifting ring 105 is connected to the upper end of the lifter 400. One end of the third arm 104 is hinged to the first arm 102, and the other end is hinged to the second arm 103. The third arm 104 is configured as a telescopic rod to adjust the angle between the second arm 103 and the first arm 102. By adjusting the length of the third arm 104, the position of the end of the second arm 103 connected to the lifter 400 can be changed. When the end of the second arm 103 connected to the lifter 400 is adjusted to directly above the hanger 200, the extension and retraction of the third arm 104 is restricted.

[0039] like Figure 3 As shown, a feasible implementation of the third arm 104 is: the third arm 104 includes an inner rod 1 and an outer rod 2, the outer rod 2 is a hollow rod, and at least a portion of the outer rod 2 is sleeved on the outside of the inner rod 1, the side wall of the inner rod 1 is provided with an inner connecting hole penetrating the inner rod, and the side wall of the outer rod 2 is provided with a plurality of outer connecting holes 21 spaced apart along the length direction of the outer rod, and the outer rod 2 is fixedly connected to the inner rod 1 by a fastener 3 that passes through the inner connecting hole and a certain outer connecting hole 21 at the same time.

[0040] like Figure 5 and Figure 6As shown, another feasible implementation manner of the third arm 104 is: the third arm 104 includes an inner rod 1 and an outer rod 2, the inner rod 1 and the outer rod 2 are both hollow rods, the cross-sectional shapes of the inner rod 1 and the outer rod 2 can generally be circular or square, and at least a portion of the outer rod 2 is sleeved on the outside of the inner rod 1, and an inner connecting seam 12 extending along the length direction of the inner rod 1 is provided on the side wall of the inner rod 1, a nut 4 is fixedly connected to the side wall of the outer rod 2, and an outer connecting hole 21 coaxial with the nut is also provided on the side wall of the outer rod 2, a bolt 5 is threaded in the nut 4, and the bolt 5 passes through the outer connecting hole 21 and the inner connecting seam 12 to press the inner rod 1 into the outer rod 2.

[0041] In some embodiments, Figure 4 As shown, the second arm 103 is also provided with a telescopic rod. Of course, the telescopic mode of the second arm 103 can be the same as the telescopic mode of the third arm 104.

[0042] In some embodiments, the lifter 400 is a hand winch so as to achieve manual and labor-saving lifting of the hanger without taking up too much space.

[0043] In some embodiments, a reinforcing rod 106 is further connected between the connecting plate 101 and the first supporting arm 102 to increase the connection strength between the connecting plate 101 and the first supporting arm 102 .

[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0045] The above is a detailed introduction to the variable pitch motor disassembly tool provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pitch motor disassembly tool, characterized in that: include: A hanger (200), the hanger (200) comprising a rigid connector (201) and at least three rigid hangers (202) fixedly connected to the lower end of the rigid connector (201), the lower parts of the plurality of rigid hangers (202) being spaced apart and fitted on the outside of the pitch motor (300), and being detachably connected to the pitch motor (300); and A lifting device is connected to the upper end of the rigid connecting member (201) and is used for vertically lifting the hanger (200).

2. The pitch motor disassembly tool according to claim 1, characterized in that: The hanger (200) comprises four rigid hangers (202), and two of the rigid hangers (202) separated from each other among the four rigid hangers (202) are symmetrically arranged.

3. The pitch motor disassembly tool according to claim 1, characterized in that: The lifting device comprises a support frame (100) and a lifter (400); one end of the support frame (100) can be connected to a fixed support plate (500) in a fan hub via a fastener, and the other end is connected to an upper end of the lifter (400); and the lower end of the lifter (400) is connected to an upper end of the rigid connector (201).

4. The pitch motor disassembly tool according to claim 3, characterized in that: The support frame (100) comprises a fixed part and an adjustable part, wherein the fixed part can be connected to the fixed support plate (500) via a fastener, and one end of the adjustable part is movably connected to the fixed part so as to adjust the relative position of the other end of the adjustable part and the fixed part, and the other end of the adjustable part is connected to the upper end of the lifter (400).

5. The pitch motor disassembly tool according to claim 4, characterized in that: The fixed part comprises a connecting plate (101) and a first support arm (102); the adjustable part comprises a second support arm (103) and a third support arm (104); the connecting plate (101) can be connected to the fixed support plate (500) by a fastener; one end of the first support arm (102) is fixedly connected to the connecting plate (101); the other end of the first support arm (102) is hingedly connected to one end of the second support arm (103); the other end of the second support arm (103) is connected to the upper end of the lifter (400); one end of the third support arm (104) is hingedly connected to the first support arm (102); the other end is hingedly connected to the second support arm (103); the third support arm (104) is configured as a telescopic rod to adjust the angle between the second support arm (103) and the first support arm (102).

6. The pitch motor disassembly tool according to claim 5, characterized in that: The third support arm (104) comprises an inner rod (1) and an outer rod (2); the outer rod (2) is a hollow rod, and at least a portion of the outer rod (2) is sleeved on the outside of the inner rod (1); an inner connecting hole penetrating the inner rod is provided on the side wall of the inner rod (1); a plurality of outer connecting holes (21) are spaced apart on the side wall of the outer rod (2) along the length direction of the outer rod; the outer rod (2) is fixedly connected to the inner rod (1) by a fastener (3) passing through both the inner connecting hole and one of the outer connecting holes (21).

7. The pitch motor disassembly tool according to claim 5, characterized in that: The third support arm (104) comprises an inner rod (1) and an outer rod (2), wherein the inner rod (1) and the outer rod (2) are both hollow rods, and at least a portion of the outer rod (2) is sleeved on the outside of the inner rod (1); an inner connecting seam (12) extending along the length direction of the inner rod (1) is provided on the side wall of the inner rod (1); a nut (4) is fixedly connected to the side wall of the outer rod (2); an outer connecting hole (21) coaxial with the nut is also provided on the side wall of the outer rod (2); a bolt (5) is threadedly connected to the nut (4); the bolt (5) passes through the outer connecting hole (21) and the inner connecting seam (12) to press the inner rod (1) into the outer rod (2).

8. The pitch motor disassembly tool according to claim 5, characterized in that: The second supporting arm (103) is also provided with a telescopic rod.

9. The pitch motor disassembly tool according to claim 5, characterized in that: The lifter (400) is a hand chain hoist.

10. The pitch motor disassembly tool according to claim 5, characterized in that: A reinforcing rod (106) is also connected between the connecting plate (101) and the first supporting arm (102).

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