A heat dissipation system installation fixture and installation method

Abstract

This invention provides a heat dissipation system installation fixture and method for installing a heat dissipation system onto the inner surface of the main bearing shaft of a wind turbine generator set. The fixture includes: a scribing fixture for marking a scribing area on the inner surface of the shaft that corresponds to the radiator of the heat dissipation system to be installed; and an auxiliary drilling fixture with a base plate suitable for embedding into the scribing area after grinding. The base plate has positioning holes, and a drill bit is adapted to pass through the positioning holes to drill holes in the shaft. First, the scribing fixture marks the inner surface of the shaft. Then, the paint layer on the inner surface of the shaft within the scribing area is ground. The base plate of the auxiliary drilling fixture is then embedded into the ground scribing area. The base plate has positioning holes, and the drill bit directly passes through the positioning holes to drill holes. The scribing fixture and the auxiliary drilling fixture work together to ensure the convenience and accuracy of grinding and drilling on the inner surface of the shaft, facilitating the rapid fixing of the heat dissipation system onto the inner surface of the shaft.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and more specifically to a heat dissipation system installation fixture and installation method. Background Technology

[0002] Wind turbine generators convert mechanical energy into electrical energy by rotating blades that drive a generator rotor. The rotation of the blades is transmitted to the generator rotor via the rotating shaft in the turbine's shaft system. The fixed shaft in this system is fixed to the turbine's base and connected to the stator to keep the stator stationary. Bearings support the rotating and fixed shafts. During operation, the continuous rotation of the rotating shaft generates significant heat in the bearings supporting both the rotating and fixed shafts, causing the shaft system temperature to rise continuously. If the shaft system remains at high temperatures for extended periods, the grease within it will age or fail more rapidly. Defective grease can have unpredictable effects on the turbine's operation; for example, grease failure can exacerbate heat generation in the shaft system, creating a vicious cycle. Therefore, continuous and efficient cooling of the shaft system, especially the bearings, is essential to prevent excessively high shaft temperatures. Summary of the Invention

[0003] Therefore, the purpose of this invention is to provide a heat dissipation system installation fixture and installation method that assist in installing the heat dissipation system on the inner surface of the moving shaft.

[0004] The first aspect of this invention provides a heat dissipation system installation fixture for installing a heat dissipation system onto the inner surface of the main bearing shaft of a wind turbine generator set, comprising:

[0005] A scribing fixture is used to scribing a radiator of the heat dissipation system to be installed on the inner surface of the moving shaft.

[0006] The auxiliary drilling fixture has a base plate suitable for embedding into the scribed area after grinding. The base plate has positioning holes, through which a drill bit is adapted to drill into the moving shaft. First, a scribed area is marked on the inner surface of the moving shaft using the scribed fixture. The paint layer on the inner surface of the moving shaft within the scribed area is then ground. The base plate of the auxiliary drilling fixture is then embedded into the ground scribed area. The base plate has positioning holes through which the drill bit directly drills. The combination of the scribed fixture and the auxiliary drilling fixture ensures the convenience and accuracy of grinding and drilling on the inner surface of the moving shaft, facilitating the rapid installation of the heat dissipation system onto the inner surface of the moving shaft.

[0007] The scribing fixture includes a first limiting rod, which is positioned based on the position of the grease hole on the inner surface of the moving shaft. Positioning based on the grease hole enables fast and accurate positioning.

[0008] The first limiting rod is located between two adjacent grease filling holes, parallel to the two grease filling holes, and equidistant from the two grease filling holes, which facilitates manual operation.

[0009] The scribing fixture also includes a scribing frame, and the area within the scribing frame is the scribing area. During scribing, lines are drawn along the edges within the scribing frame, making the operation simple and convenient.

[0010] The marking frame includes a bottom edge and two first long sides connected to both ends of the bottom edge and perpendicular to the bottom edge; the first limiting rod is connected between the two first long sides and parallel to the bottom edge. The first limiting rod, the bottom plate, and the two first long sides form a marking area. The first limiting rod can be used for positioning and also forms the marking frame. The structure is simple and convenient for manual operation.

[0011] The two first long sides are of equal length, suitable for simultaneously pressing against the brake disc. When using this scribing fixture for scribing, one hand holds the fixture so that the two first long sides press against the brake disc simultaneously, while the other hand can mark the scribing area within the scribing frame. This avoids the scribing fixture from wobbling back and forth and facilitates manual operation.

[0012] The auxiliary drilling fixture also includes a second limiting rod, which is positioned based on the location of the grease hole on the inner surface of the moving shaft. This facilitates the positioning of the auxiliary drilling fixture and helps ensure the accuracy of the drilling position.

[0013] The second limiting rod is located between two adjacent grease filling holes, parallel to and equidistant from them. In use, simply ensuring that the second limiting rod is parallel or collinear with the line connecting the two grease filling holes, and that both ends of the second limiting rod are equidistant from the grease filling holes, is sufficient to determine the position of the drilling auxiliary tooling. The operation is simple and convenient.

[0014] The area of ​​the base plate is approximately equal to the area of ​​the scribed region, making it suitable for embedding into the scribed region; the position of the second limiting rod corresponds to the position of the first limiting rod. By embedding the base plate into the scribed region, the positioning accuracy of the auxiliary drilling fixture can be further ensured.

[0015] The auxiliary drilling fixture also includes a first support portion and a second support portion extending from both ends of the base plate. The first support portion is adapted to abut against the connection surface between the bearing and the fan hub, and the second support portion is adapted to abut against the brake disc. When in use, the first support portion abuts against the connection surface between the bearing and the fan hub, and the second support portion abuts against the brake disc, providing stability and preventing the auxiliary drilling fixture from wobbling back and forth. Operators do not need to hold the auxiliary drilling fixture; they can directly use drilling tools to drill holes, making operation convenient.

[0016] The first support includes at least one support rod fixed to the base plate. The support rod is provided with an upper groove. The stepped surface of the upper groove is used to avoid interference with the connecting bolts of the fan shaft system and the fan hub.

[0017] The support rod is also provided with a lower groove, the stepped surface of which is used to mate with the boss on the inner surface of the moving shaft. During use, the stepped surface of the lower groove and the boss on the inner surface of the moving shaft are securely engaged, making the auxiliary drilling fixture relatively stable and less prone to shaking.

[0018] The second support includes at least one adjusting screw, the length of which is adjusted so that the screw abuts against the brake disc. Because the brake disc may have low machining precision during processing, its dimensions at different locations may be inconsistent. By using the adjusting screw, the second support can be stably supported on the brake disc.

[0019] The base plate also includes a weight-reducing hole, and a bushing is provided in the positioning hole. The weight-reducing hole can reduce the weight of the auxiliary drilling fixture, making it easier to transport. By providing a bushing in the positioning hole, it is possible to avoid affecting the assembly of the radiator due to excessively large hole diameter drilled on the inner surface of the moving shaft.

[0020] A second aspect of the present invention provides a heat dissipation system installation fixture for installing a heat dissipation system on the inner surface of the main bearing shaft of a wind turbine generator set, including an auxiliary drilling fixture, the auxiliary drilling fixture comprising:

[0021] The positioning part is used to position the auxiliary drilling tool in the axial and circumferential directions.

[0022] The scribing section is used to define a scribing area on the inner surface of the moving shaft that corresponds to the radiator of the heat dissipation system to be installed during scribing; and

[0023] The drilling part is used to embed the scribing part into the scribing area after grinding during drilling, and to drill holes in the moving shaft through the drilling part provided on the scribing part.

[0024] When using this auxiliary drilling tool, first mark the outer edge of the base plate to define the marked area, grind the area, and then use the tool again to drill. This tool has multiple uses, reducing the types and number of tools.

[0025] The positioning part includes the second limiting rod, the first support part, and the second support part.

[0026] The marking section includes the base plate.

[0027] The drilled section includes the positioning hole.

[0028] A third aspect of the present invention provides a method for installing a heat dissipation system, using the aforementioned heat dissipation system installation fixture, comprising:

[0029] Position the scribing tool or the auxiliary drilling tool to scribing a scribing area on the inner surface of the wind turbine shaft.

[0030] The marked area is then polished.

[0031] The auxiliary drilling tool is embedded into the marked area and its positioning is adjusted for drilling.

[0032] The heat sink of the cooling system is installed on the inner surface of the moving shaft.

[0033] This heat dissipation system installation method allows for quick and accurate installation of the radiator onto the inner surface of the moving shaft. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the scribing fixture for a heat dissipation system installation fixture provided in Embodiment 1 of the present invention;

[0036] Figure 2 This is a schematic diagram of the auxiliary drilling fixture for a heat dissipation system installation fixture provided in Embodiment 1 of the present invention;

[0037] Figure 3 for Figure 1 A schematic diagram of the scribing tool on the inner surface of the moving shaft;

[0038] Figure 4 for Figure 2 A schematic diagram of the auxiliary drilling tool on the inner surface of the moving shaft;

[0039] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0040] Explanation of reference numerals in the attached figures:

[0041] 1 - First limiting rod; 2 - Bottom edge; 3 - First long side; 4 - Base plate; 5 - Positioning hole; 6 - Second limiting rod; 7 - First support part; 8 - Upper groove part; 9 - Lower groove part; 10 - Second support part; 11 - Adjusting screw; 12 - Weight reduction hole; 13 - Flat plate; 14 - Grease filling hole; 15 - Brake disc; 16 - Boss; 17 - Fan hub; 18 - Connecting hole. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] This invention provides a specific embodiment of a heat dissipation system installation fixture, which is used to install the heat dissipation system onto the inner surface of the main bearing shaft of a wind turbine generator set. The main bearing includes an inner ring and an outer ring, with rolling components disposed between them, allowing the inner and outer rings to rotate relative to each other. Taking the inner ring as the driving shaft, this invention provides a grease hole 14 on the inner surface of the driving shaft for lubrication of the bearing components. In this invention, a radiator is used as an example of a heat dissipation system for the main bearing of a wind turbine generator set. Since the inner surface of the main bearing has no additional positioning devices besides the grease hole 14, and the driving shaft operates in a rotating state, any imbalance in the radiator's circumferential or axial installation position will increase the eccentric load on the main bearing, affecting its safe operating life. Therefore, this invention provides an installation fixture that can conveniently and quickly and accurately position and install the radiator onto the inner surface of the bearing. Figure 1 and Figure 2 As shown, it includes marking fixtures and auxiliary drilling fixtures.

[0047] The scribing fixture is used to mark a scribing area on the inner surface of the moving shaft that is compatible with the radiator of the heat dissipation system to be installed. The scribing fixture includes a first limiting rod 1, which is positioned based on the position of the grease hole 14 on the inner surface of the moving shaft. Positioning based on the grease hole 14 enables fast and accurate positioning.

[0048] When using, such as Figure 3 As shown, the first limiting rod 1 is located between two adjacent grease filling holes 14, parallel to the two grease filling holes 14, and equidistant from the two grease filling holes 14, which facilitates positioning and manual operation.

[0049] The scribing fixture in this embodiment also includes a scribing frame, and the area within the scribing frame is the scribing area. During scribing, lines are drawn along the edges within the scribing frame, making the operation simple and convenient.

[0050] Specifically, the scribing frame includes a bottom edge 2 and two first long sides 3 connected to both ends of the bottom edge 2 and perpendicular to the bottom edge 2; the two first long sides 3 extend along the axial direction of the moving shaft, providing axial scribing positioning; a first limiting rod 1 is connected between the two first long sides 3 and parallel to the bottom edge 2, and the bottom edge 2 and the first limiting rod 1 provide circumferential scribing positioning. The first limiting rod 1, the base plate 4, and the two first long sides 3 enclose a scribing area. The first limiting rod 1 can be used for positioning and also forms the scribing frame, with a simple structure and convenient manual operation. Since the area where the radiator needs to be installed in this embodiment is a rectangular area, the scribing area within the scribing frame is rectangular, and the size of the scribing frame is adapted to the size of the radiator's installation area. Of course, in other alternative embodiments, when the area where the radiator needs to be installed has a different shape or the scribing area is changed, the shape of the scribing frame can be adjusted accordingly. Furthermore, the size of the scribing frame can be adjusted by changing the length of the bottom edge 2 and the connection position between the first limiting rod 1 and the first long side 3. The length of the first long side 3 can be adjusted to adapt to the axial length of various types of main bearings. Therefore, the scribing fixture provided by this invention has a simple structure, precise positioning, easy adjustment, and strong versatility.

[0051] As an optional implementation, the two first long sides 3 are of equal length, suitable for simultaneously abutting against the protruding structure at the axial end. When using this scribing fixture for scribing, first, the position of the limiting rod is determined according to the position of the grease hole 14. One hand holds the scribing fixture to position the two first long sides 3 axially, while the other hand can scribing the scribing area within the scribing frame. This avoids the scribing fixture from wobbling back and forth, facilitating manual operation. Of course, in other alternative implementations, the length of the two first long sides 3 can be shortened, and they do not abut against the brake disc 15. After positioning the scribing fixture, the operator presses down on the scribing fixture and scribing within the scribing frame.

[0052] Once the scribing area on the inner surface of the moving shaft is determined, the scribing area is ground. Before installing the radiator, holes need to be drilled on the inner surface of the moving shaft to install the radiator. Therefore, this invention also provides an auxiliary drilling fixture, which is similar in positioning principle to the scribing fixture. Since it is necessary to determine the precise drilling position, a positioning fixture with adjustable and secure positioning at both ends of the axial direction is added to the scribing fixture, and a suitable drilling area is defined. Of course, since the auxiliary drilling fixture provided by this invention also has a base plate adapted to the scribing area, the functions of both the scribing fixture and the drilling fixture can be achieved by using only the auxiliary drilling fixture. The principle and structure of the auxiliary drilling fixture provided by this invention will be described in detail below.

[0053] The auxiliary drilling tooling provided by this invention is Figure 2For example, the device includes a base plate 4 suitable for embedding within a scribing area marked by a scribing fixture after grinding. The shape of the base plate 4 adapts to the shape of the scribing area (e.g., it can be slightly smaller than the area of ​​the scribing area) to embed within the scribing area. In some embodiments, the edges of both plates substantially coincide to provide precise drilling positions. The base plate 4 is provided with positioning holes 5, the positions of which are pre-calculated and set for the mounting screw holes of the heat sink. During drilling, a drill bit is passed through the positioning holes 5 to drill into the moving shaft.

[0054] The auxiliary drilling fixture also includes a second limiting rod 6. The positioning method of the second limiting rod 6 is basically the same as that of the first limiting rod 1, that is, it is positioned based on the position of the grease hole 14 on the inner surface of the moving shaft. This facilitates the positioning of the auxiliary drilling fixture and helps to ensure the accuracy of the drilling position.

[0055] In specific usage, such as Figure 4 As shown, the second limiting rod 6 is located between two adjacent grease filling holes 14, parallel to and equidistant from the two grease filling holes 14. That is, by keeping the line connecting the second limiting rod 6 and the two grease filling holes 14 parallel or collinear, and by ensuring that both ends of the second limiting rod 6 are equidistant from the grease filling holes 14, the axial position of the positioning hole 5 of the drilling auxiliary tooling can be determined, making the operation simple and convenient.

[0056] The positioning principle of the auxiliary drilling fixture provided by this invention is similar to that of the scribing fixture, and their shapes are also roughly similar. That is, the area of ​​the base plate 4 is basically equal to the area of ​​the scribing region, making it suitable for embedding into the scribing region; the position of the second limiting rod 6 corresponds to the position of the first limiting rod 1. By embedding the base plate 4 into the scribing region, the positioning accuracy of the auxiliary drilling fixture can be further ensured.

[0057] The axial positioning of the auxiliary drilling fixture is achieved through the following structure: it also includes a first support portion 7 and a second support portion 10 extending axially from both ends of the base plate 4. The first support portion 7 is adapted to abut against the connection surface between the bearing and the fan hub 17, and the second support portion 10 is adapted to abut against the brake disc 15. When in use, the first support portion 7 abuts against the connection surface between the bearing and the fan hub 17, and the second support portion 10 abuts against the brake disc 15, providing stability and preventing the auxiliary drilling fixture from wobbling back and forth. Operators do not need to hold the auxiliary drilling fixture; they can directly use drilling tools to drill, making operation convenient.

[0058] As an optional implementation, the first support part 7 and the base plate 4 are detachably connected by bolts, which facilitates the separate assembly and transportation of the first support part 7 and the base plate 4.

[0059] The first support part 7 includes at least one support rod fixed to the base plate 4. The support rod can be a three-dimensional block structure extending integrally in the axial direction. One end of the support rod is fixed to the base plate 4, and the other end is snapped into the hub connection surface of the fan. Specifically, depending on the form of the fan hub 17 connection surface, the snapping end of the support rod is provided with an upper groove 8 and a lower groove 9. The upper groove 8 can be formed by chamfering the two edges of the block structure of the support rod, or a certain structure can be cut off according to the structure of the actual snapping space to avoid interference with the connecting bolts of the fan shaft system and the fan impeller. Figure 5 The connecting bolts are not shown; only the connecting holes 18 for mounting the connecting bolts are shown. The lower groove 9 is a stepped portion cut out in the radial thickness direction of the block structure of the support rod, extending a certain length along the axial direction of the support rod. The stepped surface formed is used to mate with the boss 16 on the inner surface of the moving shaft. In use, the stepped surface of the lower groove 9 and the boss 16 are stably engaged, making the auxiliary drilling fixture relatively stable and not prone to shaking, thus achieving the positioning of the auxiliary drilling fixture at one axial end. The number of support rods in the first support part 7 can be one or more, depending on the circumferential width of the fixture.

[0060] In this embodiment, the second support portion 10 extends and is positioned at the other axial end of the base plate 4. Optionally, the second support portion 10 extends to the other axial end in the form of a flat plate 13, and at the end, a radially extending protrusion is formed for positioning and engaging with the other end. Optionally, the width of the extended flat plate 13 can be smaller than the width of the base plate 4, which is beneficial for weight reduction and transportation. Specifically, the second support portion 10 includes a flat plate 13 extending from the base plate 4 at one end, a protrusion extending radially along the other end of the flat plate 13, and at least one adjusting screw 11 disposed on the protrusion. The width of the flat plate 13 is smaller than the width of the base plate 4. The protrusion is provided with a plurality of axially extending threaded holes. The adjusting screw 11 is installed in the threaded holes, and the screw passes through the threaded holes and abuts against the brake disc 15 or other structures at the other axial end of the drive shaft. The nut ends of these adjusting screws 11 are adjusted so that the length of the screw extending axially out of the protrusion is adjustable. During positioning, the screw is adjusted to abut against the brake disc 15. Because the brake disc 15 may have low machining precision during processing, its dimensions may be inconsistent at different locations. By setting the adjusting screw 11, it can be ensured that the second support part 10 can be stably supported on the brake disc 15. Of course, there can be one or more adjusting screws 11.

[0061] The base plate 4 or the extended plate 13 can be respectively provided with weight-reducing holes 12, and a bushing is provided in the positioning hole 5. Providing weight-reducing holes 12 can reduce the weight of the auxiliary drilling fixture, facilitating transportation. By providing a bushing in the positioning hole 5, it is possible to avoid affecting the assembly of the radiator due to excessively large hole diameter drilled on the inner surface of the moving shaft. Specifically, the weight-reducing hole 12 is a square hole; however, in other alternative embodiments, the weight-reducing hole 12 can be a hole of any shape.

[0062] When this heat dissipation system installation fixture is in use, if only one auxiliary drilling fixture is set, the aforementioned second limiting rod 6, first support 7, and second support 10 form a positioning part for axial and circumferential positioning of the auxiliary drilling fixture. The aforementioned base plate 4 forms a scribing part, which is used to mark a scribing area on the inner surface of the moving shaft that is compatible with the radiator of the heat dissipation system to be installed during scribing. The aforementioned positioning hole 5 serves as a drilling part, which is used to embed the base plate 4, which serves as the scribing part, into the scribing area after grinding during drilling, and to drill the moving shaft through the drilling part provided on the scribing part. In use, scribing is first performed through the outer edge of the base plate 4 of the auxiliary drilling fixture to mark the scribing area, the area is ground, and the fixture is used again for drilling; thus, this fixture has multiple uses, reducing the types and number of fixtures. When a simple scribing fixture and a more complex auxiliary drilling fixture are set up, the scribing fixture first marks the scribing area on the inner surface of the moving shaft. The paint layer on the inner surface of the moving shaft within the scribing area is then polished. The base plate 4 of the auxiliary drilling fixture is then embedded into the polished scribing area. The base plate 4 has positioning holes 5, and the drill bit passes directly through the positioning holes 5 to make holes. The scribing fixture and the auxiliary drilling fixture work together to ensure the convenience and accuracy of polishing and drilling on the inner surface of the moving shaft, which is conducive to quickly fixing the heat dissipation system on the inner surface of the moving shaft. Since the positioning principle and structure of the scribing fixture and the drilling fixture are similar, the simultaneous operation of scribing and drilling in different areas requires less manual labor, improves the uniformity of the operation, and improves the efficiency of the operation.

[0063] The present invention also provides a method for installing a heat dissipation system, using the heat dissipation system installation fixture in the above embodiments, including the following steps:

[0064] Position the scribing tool or auxiliary drilling tool and scribing the scribing area on the inner surface of the wind turbine shaft;

[0065] Grinding and polishing the marked areas;

[0066] Insert the auxiliary drilling tool into the marked area and adjust its positioning to perform drilling;

[0067] The radiator of the cooling system is installed on the inner surface of the moving shaft, specifically by bolting the radiator onto the inner surface of the moving shaft.

[0068] This heat dissipation system installation method allows for quick and accurate installation of the radiator onto the inner surface of the moving shaft using bolts.

[0069] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A heat dissipation system installation fixture, characterized in that, For mounting a cooling system on the inner surface of the main bearing shaft of a wind turbine generator set, including: A scribing fixture is used to scribing a radiator of the heat dissipation system to be installed on the inner surface of the moving shaft. The auxiliary drilling fixture has a base plate (4) suitable for embedding into the scribing area after grinding. The base plate (4) is provided with a positioning hole (5). The drill bit is suitable for drilling the moving shaft through the positioning hole (5). The scribing fixture includes a first limiting rod (1). The first limiting rod (1) is positioned based on the position of the grease hole (14) on the inner surface of the moving shaft. The scribing fixture also includes a scribing frame. The area inside the scribing frame is the scribing area. The scribing frame includes a bottom edge (2) and two first long sides (3) connected to the two ends of the bottom edge (2) and perpendicular to the bottom edge (2). The first limiting rod (1) is connected between the two first long sides (3) and parallel to the bottom edge (2). The two first long sides (3) are of equal length and are suitable for simultaneously abutting against the brake disc (15).

2. The heat dissipation system installation fixture according to claim 1, characterized in that, The first limiting rod (1) is located between two adjacent grease filling holes (14), parallel to the two grease filling holes (14), and equidistant from the two grease filling holes (14).

3. The heat dissipation system installation fixture according to claim 1, characterized in that, The auxiliary drilling tool also includes a second limiting rod (6), which is positioned based on the position of the grease hole (14) on the inner surface of the moving shaft.

4. The heat dissipation system installation fixture according to claim 3, characterized in that, The second limiting rod (6) is located between two adjacent grease holes (14), parallel to the two grease holes (14), and equidistant from the two grease holes (14).

5. The heat dissipation system installation fixture according to claim 3, characterized in that, The area of ​​the base plate (4) is equal to the area of ​​the marked area, and is suitable for embedding into the marked area; the position of the second limiting rod (6) corresponds to the position of the first limiting rod (1).

6. The heat dissipation system installation fixture according to claim 3, characterized in that, The auxiliary drilling fixture also includes a first support part (7) and a second support part (10) extending from both ends of the base plate (4). The first support part (7) is adapted to abut against the connection surface between the bearing and the fan hub (17), and the second support part (10) is adapted to abut against the brake disc (15).

7. The heat dissipation system installation fixture according to claim 6, characterized in that, The first support part (7) includes at least one support rod fixed to the base plate (4). The support rod is provided with an upper groove (8). The stepped surface of the upper groove (8) is used to avoid interference with the connecting bolts of the fan shaft system and the fan hub (17).

8. The heat dissipation system installation fixture according to claim 7, characterized in that, The support rod is also provided with a lower groove (9), the stepped surface of which is used to cooperate with the boss (16) on the inner surface of the moving shaft.

9. The heat dissipation system installation fixture according to claim 6, characterized in that, The second support (10) includes at least one adjusting screw (11), the length of which is adjusted so that the screw abuts against the brake disc (15).

10. The heat dissipation system installation fixture according to claim 1, characterized in that, The base plate (4) also includes a weight reduction hole (12), and a bushing is provided in the positioning hole (5).

11. A heat dissipation system installation fixture, characterized in that, A tool for mounting a cooling system onto the inner surface of the main bearing shaft of a wind turbine generator set includes an auxiliary drilling fixture, the auxiliary drilling fixture comprising: The positioning part is used to position the auxiliary drilling tool in the axial and circumferential directions. The scribing section is used to define a scribing area on the inner surface of the moving shaft that corresponds to the radiator of the heat dissipation system to be installed during scribing; and The drilling part is used to embed the scribing part into the scribing area after grinding during drilling, and to drill the moving shaft through the drilling part provided on the scribing part; the positioning part includes a second limiting rod (6), which is positioned based on the position of the grease hole (14) on the inner surface of the moving shaft, and the second limiting rod (6) is parallel or collinear with the line connecting the two grease holes (14); the scribing part includes a base plate (4), which is provided with a positioning hole (5), and the drilling part includes the positioning hole (5).

12. The heat dissipation system installation fixture according to claim 11, characterized in that, The positioning part includes a first support part (7) and a second support part (10) of the heat dissipation system installation fixture as described in any one of claims 6-9.

13. A method for installing a heat dissipation system, characterized in that, The heat dissipation system mounting fixture according to any one of claims 1-12 includes: Position the scribing tool or the auxiliary drilling tool to scribing a scribing area on the inner surface of the wind turbine shaft. The marked area is then polished. The auxiliary drilling tool is embedded into the marked area and its positioning is adjusted for drilling. The heat sink of the cooling system is installed on the inner surface of the moving shaft.

Images