Assembly method and assembly tool of wind driven generator driving chain

Abstract

The invention discloses an assembling method and an assembling tool for a driving chain of a wind driven generator. The assembling method for the driving chain of the wind driven generator comprises the steps that the axis of a main shaft system and the axis of a gearbox are controlled to be parallel to the horizontal plane; the first fixing assembly is used for fixing the relative positions of the first-stage gear ring and the planet carrier; the first positioning assembly is installed on the first-stage gear ring, and the second positioning assembly is installed on the planet carrier. The gearbox is controlled to move towards the spindle system in the axis direction of the spindle, the first positioning assembly is inserted into a bearing seat positioning hole of the bearing seat, and the second positioning assembly is inserted into a spindle positioning hole of the spindle; the first fixing assembly is dismounted; and fixing the main shaft system and the gear box, and dismounting the first positioning assembly and the second positioning assembly. In the assembling process, the orientation of the main shaft system and the orientation of the gear box are kept unchanged all the time, an operator can enter the main shaft to install the positioning pin when the main shaft is horizontally placed without multiple times of turning, working hours are greatly shortened, production efficiency is improved, and safety is enhanced.

Description

Technical Field

[0001] The invention relates to the field of wind power generation, and in particular to an assembly method and assembly tooling for a wind power generator drive chain. Background Art

[0002] Large-megawatt complete machines are the current demand of the wind power market. Therefore, in order to adapt to the current market trend, the wind turbine drive train (combination of the main shaft system, gearbox and generator) of major complete machine manufacturers is also developing towards larger megawatts. High-power drive trains mean greater weight and longer size, which puts higher requirements on the assembly of gearboxes, especially the assembly and docking of gearboxes and main shaft systems.

[0003] The traditional assembly and docking method of the gearbox and the spindle system is vertical installation, that is, the first-level planetary component inside the gearbox is first installed on the spindle system in a vertical state for assembly and docking, and then the spindle system is turned over to complete the docking with the other parts of the gearbox. This docking method requires turning over the spindle system, which is extremely time-consuming, affects the production progress, and has many safety hazards. In addition, vertical installation requires the cooperation of the crane's hoisting, and the crane's hoisting height is limited. If the total height of the drive chain is greater than the allowable height of the crane, it cannot be docked and installed in this way. When the spindle system and the first-level planetary component are assembled, someone needs to enter the hole in the middle of the spindle to insert the pin. Because of the high height, entering and exiting the middle hole of the spindle is dangerous and inconvenient, and the efficiency of sending the fixing pin into the middle hole is low.

[0004] In addition, some suppliers install the first-level planetary components and other parts of the gearbox into a whole and then sell them. The traditional vertical installation method requires the already installed first-level planetary components to be removed first. Once quality problems occur in the gearbox, the responsible party is unclear, which can easily lead to quality disputes with suppliers. Summary of the invention

[0005] In order to solve the technical problem that assembling a main shaft system and a gear box of a wind turbine by a vertical installation method will result in low assembly efficiency and poor safety, the present invention provides an assembly method and assembly tool for a wind turbine drive chain.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A method for assembling a drive chain of a wind turbine generator, the drive chain of the wind turbine generator comprising a main shaft system and a gear box, the main shaft system comprising a main shaft and a bearing seat, the gear box comprising a primary gear ring and a planet carrier; the method for assembling the drive chain of the wind turbine generator comprising the following steps:

[0008] Controlling the axis of the main shaft system and the axis of the gear box to be parallel to a horizontal plane;

[0009] Connecting the primary ring gear and the planet carrier, and fixing the relative positions of the primary ring gear and the planet carrier using a first fixing assembly;

[0010] Installing the first end of the first positioning assembly on the primary gear ring, and installing the first end of the second positioning assembly on the planet carrier;

[0011] Control the axis of the main shaft and the axis of the primary gear ring to be on a horizontal line;

[0012] Controlling the gear box to move along the axis direction of the main shaft toward the main shaft system, so that the second end of the first positioning assembly is inserted into the bearing seat positioning hole of the bearing seat, and the second end of the second positioning assembly is inserted into the main shaft positioning hole of the main shaft;

[0013] removing the first fixing assembly;

[0014] Fix the spindle system and the gear box, and remove the first positioning assembly and the second positioning assembly.

[0015] In this solution, the main shaft system and the gearbox are assembled by horizontal docking, which is no longer limited by the hoisting height of the crane and is more suitable for large wind turbine drive chains. During the assembly process, the orientation of the main shaft system and the gearbox remains unchanged without multiple flipping. The operator can also enter the main shaft to install the locating pins when the main shaft is placed horizontally, which greatly shortens the working hours, improves production efficiency, and enhances safety. In addition, the horizontal docking assembly method does not require the removal of the first-level planetary components of the gearbox separately. The assembled gearbox sent by the supplier can be used directly. If there is a quality problem with the gearbox, the responsible party can also be identified.

[0016] Preferably, the first fixing assembly comprises a fixing block and a first bolt, the fixing block is arranged on the outer peripheral side of the planet carrier and is installed on the primary gear ring, the fixing block is provided with a first threaded hole, the axis of the first threaded hole passes through the outer peripheral surface of the planet carrier, and the first bolt cooperates with the first threaded hole;

[0017] The step of fixing the relative positions of the primary gear ring and the planet carrier using the first fixing assembly comprises:

[0018] The first bolt is controlled to be threadedly engaged with the first threaded hole, and the first bolt is screwed so that the first bolt abuts against the outer peripheral surface of the planet carrier.

[0019] In this solution, the first bolt is used to support the planet carrier to ensure that the planet carrier does not fall under the action of gravity, effectively prevent the planet carrier from shifting, improve the subsequent alignment accuracy of the planet carrier and the main shaft, and improve assembly efficiency.

[0020] Preferably, the gear box further comprises a housing, and the housing is arranged on a side of the primary gear ring away from the main shaft system;

[0021] Before the step of installing the first end of the first positioning assembly on the primary gear ring and the step of installing the first end of the second positioning assembly on the planet carrier, the method for assembling the wind turbine drive chain further includes the following steps:

[0022] A second fixing assembly is used to fix the relative positions of the housing and the planet carrier.

[0023] In this solution, the second fixing assembly is used to further fix the position of the planet carrier in the overall gear box to prevent the planet carrier from falling due to gravity, thereby improving the subsequent alignment accuracy of the planet carrier and the main shaft and improving assembly efficiency.

[0024] Preferably, the second fixing assembly includes a second bolt and a third bolt; a second threaded hole is provided at the upper end of the planet carrier, a connecting hole is provided on the box body, and the second bolt passes through the connecting hole and cooperates with the second threaded hole; a third threaded hole is provided at the lower end of the box body, and the axis of the third threaded hole passes through the outer circumference of the planet carrier, and the third bolt passes through the second threaded hole and cooperates with the second threaded hole;

[0025] The step of fixing the relative positions of the housing and the planet carrier using the second fixing assembly comprises:

[0026] Controlling the second bolt to threadably engage with the second threaded hole, and screwing the second bolt so that the head of the second bolt abuts against the outer peripheral surface of the box body;

[0027] The third bolt is controlled to be threadedly matched with the third threaded hole, and the third bolt is screwed so that the third bolt abuts against the outer peripheral surface of the planetary carrier.

[0028] In this solution, the second bolt located at the upper end of the planetary carrier is used to tighten the planetary carrier upward, and the third bolt located at the lower end of the planetary carrier is used to push it upward, thereby preventing the planetary carrier from falling and shifting, improving the subsequent alignment accuracy of the planetary carrier and the main shaft, and improving assembly efficiency.

[0029] Preferably, the first positioning assembly includes a plurality of first positioning rods, the second positioning assembly includes a plurality of second positioning rods, and the second ends of the first positioning rods extend along the axis direction of the primary gear ring to exceed the second ends of the second positioning rods;

[0030] In the step of controlling the gear box to move toward the spindle system along the axis direction of the spindle, inserting the second end of the first positioning component into the bearing seat positioning hole of the bearing seat, and inserting the second end of the second positioning component into the spindle positioning hole of the spindle:

[0031] The second end of the first positioning component is first inserted into the bearing seat positioning hole, and the second end of the second positioning component is then inserted into the spindle positioning hole.

[0032] In this solution, the first positioning rod is used to achieve the first positioning of the gearbox and the main shaft system, and to align the primary gear ring and the bearing seat; the second positioning rod is used to achieve the second positioning of the gearbox and the main shaft system, and to align the planet carrier and the main shaft. This improves the alignment accuracy of the gearbox and the main shaft system and improves the assembly efficiency of the two.

[0033] Preferably, the number of the second positioning rods is multiple, and the multiple second positioning rods include a primary positioning pin, a secondary positioning pin and a tertiary positioning pin; the second end of the primary positioning pin extends along the axis direction of the primary gear ring to exceed the second end of the secondary positioning pin, and the second end of the secondary positioning pin extends along the axis direction of the primary gear ring to exceed the second end of the tertiary positioning pin;

[0034] In the step of inserting the second end of the second positioning assembly into the spindle positioning hole of the spindle:

[0035] The primary positioning pin is inserted into the spindle positioning hole before the secondary positioning pin, and the secondary positioning pin is inserted into the spindle positioning hole before the tertiary positioning pin.

[0036] In this solution, by providing three positioning pins of different lengths, multiple and multi-position positioning of the planet carrier and the main shaft is achieved, thereby further improving the alignment accuracy of the planet carrier and the main shaft.

[0037] Preferably, the spindle positioning hole comprises a first spindle positioning hole, a second spindle positioning hole and a third spindle positioning hole, the first-level positioning pin is inserted into the first spindle positioning hole, the second-level positioning pin is inserted into the second spindle positioning hole, and the third-level positioning pin is inserted into the third spindle positioning hole;

[0038] The difference between the diameter of the first-level locating pin and the diameter of the first spindle locating hole is greater than the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole, and the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole is greater than the difference between the diameter of the tertiary locating pin and the diameter of the third spindle locating hole.

[0039] In this solution, by gradually increasing the positioning accuracy requirements of the positioning pins and the main shaft positioning holes, the positioning difficulty of the planet carrier and the main shaft is reduced and the positioning efficiency is improved.

[0040] Preferably, the step of controlling the gear box to move along the axis direction of the main shaft toward the main shaft system comprises:

[0041] Selecting a plurality of first measuring points and a second measuring point of the same number on both end surfaces of the primary gear ring and the bearing seat, respectively, and measuring the distances between a plurality of groups of the first measuring points and the corresponding second measuring points in the axial direction of the main shaft;

[0042] Compare whether the maximum difference between the multiple groups of distances is less than or equal to the preset value; if so, continue to move the gearbox, if not, adjust the position of the gearbox relative to the main shaft system so that the axis of the main shaft coincides with the axis of the primary gear ring.

[0043] In this solution, during the movement of the gearbox, the position of the gearbox is measured in time to see if there is any deviation, so as to correct the position of the gearbox in time and improve the alignment accuracy of the gearbox and the spindle system.

[0044] Preferably, in the step of comparing whether the maximum difference between the plurality of groups of distances is less than or equal to a preset value: the preset value is 2 mm.

[0045] In this solution, the preset value should not be too large to reduce the difficulty of adjusting the gearbox position.

[0046] Preferably, the step of fixing the spindle system and the gear box comprises:

[0047] A clamping assembly is used to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring.

[0048] In this solution, the clamping assembly is used to reduce the distance between the primary gear ring and the bearing seat, so as to facilitate the subsequent connection of the primary gear ring and the bearing seat through fasteners, making the structure of the wind turbine drive chain more compact and stable.

[0049] Preferably, the clamping assembly includes a hollow hydraulic jack and a nut, the hydraulic jack includes a moving part and a fixed part that can move relatively; the first positioning assembly includes a first positioning rod, the second end of the first positioning rod passes through the positioning hole of the bearing seat, and the first positioning rod is provided with an external thread; the hydraulic jack is sleeved on the first positioning rod and is located on the side of the bearing seat away from the gear box, the nut is provided on the side of the hydraulic jack away from the bearing seat and cooperates with the external thread of the first positioning rod, and the moving part is used to apply a force to the bearing seat along the axial direction of the main shaft toward the direction of the primary gear ring;

[0050] In the step of using a clamping assembly to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring: the movable part is controlled to abut against the bearing seat by pressurizing the hydraulic jack, and a force is continuously applied to the bearing seat in the direction of the primary gear ring.

[0051] In this solution, the hydraulic jack is small in size and light in weight, and is easy to install on the first positioning rod. The hydraulic jack is easy to operate, has stable transmission, and high strength, and can steadily press the primary gear ring and the bearing seat.

[0052] Preferably, before the bearing seat and the primary gear ring abut against each other: the first fixing assembly is removed;

[0053] After the step of using a clamping assembly to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring: removing the first positioning assembly and the second positioning assembly.

[0054] In this solution, the first fixing assembly is removed before the bearing seat and the first gear ring are abutted to avoid the first fixing assembly interfering with the abutment of the two. The first positioning assembly and the second positioning assembly are removed after the first gear ring and the bearing seat are pressed tightly to facilitate the connection of fasteners between the first gear ring and the bearing seat, and between the first planetary carrier and the main shaft, so as to ensure the stable connection of the gearbox and the main shaft system.

[0055] Preferably, in the step of fixing the main shaft system and the gear box and removing the first positioning assembly and the second positioning assembly: after removing the second positioning assembly, the main shaft and the planetary carrier are connected by a hollow pin.

[0056] In this solution, the hollow pin is interference-fitted with the fixing holes on the main shaft and the planetary carrier to achieve fixed connection between the main shaft and the planetary carrier. The connection efficiency of the pin fixing method is higher than that of the threaded connection.

[0057] An assembly tool for a wind turbine drive chain, the wind turbine drive chain comprising a main shaft system and a gear box, the main shaft system comprising a main shaft and a bearing seat, the gear box comprising a primary gear ring and a planet carrier; the assembly tool for the wind turbine drive chain is used in the above-mentioned wind turbine drive chain assembly method, the assembly tool for the wind turbine drive chain comprising a first fixing component, a first positioning component and a second positioning component;

[0058] The first fixing assembly is connected to the primary gear ring and the planet carrier, and is used to fix the relative position of the primary gear ring and the planet carrier;

[0059] The first end of the first positioning assembly is mounted on the primary gear ring, and the second end of the first positioning assembly is inserted into the bearing seat positioning hole of the bearing seat;

[0060] The first end of the second positioning assembly is mounted on the planet carrier, and the second end of the second positioning assembly is inserted into the main shaft positioning hole of the main shaft.

[0061] In this solution, the main shaft system and the gearbox are assembled by horizontal docking, which is no longer limited by the hoisting height of the crane and is more suitable for large wind turbine drive chains. During the assembly process, the orientation of the main shaft system and the gearbox remains unchanged without multiple flipping. The operator can also enter the main shaft to install the locating pins when the main shaft is placed horizontally, which greatly shortens the working hours, improves production efficiency, and enhances safety. In addition, the horizontal docking assembly method does not require the removal of the first-level planetary components of the gearbox separately. The assembled gearbox sent by the supplier can be used directly. If there is a quality problem with the gearbox, the responsible party can also be identified.

[0062] Preferably, the first fixing assembly includes a fixing block and a first bolt, the fixing block is arranged on the outer peripheral side of the planetary carrier and installed on the primary gear ring, the fixing block is provided with a first threaded hole, the axis of the first threaded hole passes through the outer peripheral surface of the planetary carrier, the first bolt cooperates with the first threaded hole, and the first bolt can abut against the outer peripheral surface of the planetary carrier.

[0063] In this solution, the first bolt is used to support the planet carrier to ensure that the planet carrier does not fall under the action of gravity, effectively prevent the planet carrier from shifting, improve the subsequent alignment accuracy of the planet carrier and the main shaft, and improve assembly efficiency.

[0064] Preferably, the gearbox also includes a housing, which is arranged on a side of the primary gear ring away from the main shaft system; the assembly tooling of the wind turbine drive chain also includes a second fixing component, which connects the housing and the planetary carrier, and is used to fix the relative positions of the housing and the planetary carrier.

[0065] In this solution, the second fixing assembly is used to further fix the position of the planet carrier in the overall gear box to prevent the planet carrier from falling due to gravity, thereby improving the subsequent alignment accuracy of the planet carrier and the main shaft and improving assembly efficiency.

[0066] Preferably, the second fixing assembly includes a second bolt and a third bolt;

[0067] A second threaded hole is provided at the upper end of the planet carrier, a connecting hole is provided on the box body, and the second bolt passes through the connecting hole and cooperates with the second threaded hole;

[0068] A third threaded hole is provided at the lower end of the box body, the axis of the third threaded hole passes through the outer circumference of the planet carrier, the third bolt passes through the second threaded hole and cooperates with the second threaded hole, and the third bolt can abut against the outer circumference of the planet carrier.

[0069] In this solution, the second bolt located at the upper end of the planetary carrier is used to tighten the planetary carrier upward, and the third bolt located at the lower end of the planetary carrier is used to push it upward, thereby preventing the planetary carrier from falling and shifting, improving the subsequent alignment accuracy of the planetary carrier and the main shaft, and improving assembly efficiency.

[0070] Preferably, the first positioning assembly includes a plurality of first positioning rods, the second positioning assembly includes a plurality of second positioning rods, and the second ends of the first positioning rods extend along the axial direction of the primary gear ring to exceed the second ends of the second positioning rods.

[0071] In this solution, the first positioning rod is used to achieve the first positioning of the gearbox and the main shaft system, and to align the primary gear ring and the bearing seat; the second positioning rod is used to achieve the second positioning of the gearbox and the main shaft system, and to align the planet carrier and the main shaft. This improves the alignment accuracy of the gearbox and the main shaft system and improves the assembly efficiency of the two.

[0072] Preferably, there are multiple second positioning rods, and the multiple second positioning rods include a primary positioning pin, a secondary positioning pin and a tertiary positioning pin; the second end of the primary positioning pin extends along the axial direction of the primary gear ring to exceed the second end of the secondary positioning pin, and the second end of the secondary positioning pin extends along the axial direction of the primary gear ring to exceed the second end of the tertiary positioning pin.

[0073] In this solution, by providing three positioning pins of different lengths, multiple and multi-position positioning of the planet carrier and the main shaft is achieved, thereby further improving the alignment accuracy of the planet carrier and the main shaft.

[0074] Preferably, the spindle positioning hole comprises a first spindle positioning hole, a second spindle positioning hole and a third spindle positioning hole, the first-level positioning pin is used to be inserted into the first spindle positioning hole, the second-level positioning pin is used to be inserted into the second spindle positioning hole, and the third-level positioning pin is used to be inserted into the third spindle positioning hole;

[0075] The difference between the diameter of the first-level locating pin and the diameter of the first spindle locating hole is greater than the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole, and the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole is greater than the difference between the diameter of the tertiary locating pin and the diameter of the third spindle locating hole.

[0076] In this solution, by gradually increasing the positioning accuracy requirements of the positioning pins and the main shaft positioning holes, the positioning difficulty of the planet carrier and the main shaft is reduced and the positioning efficiency is improved.

[0077] Preferably, the assembly tool of the wind turbine drive chain further comprises a clamping assembly, and the clamping assembly is used to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring.

[0078] In this solution, the clamping assembly is used to reduce the distance between the primary gear ring and the bearing seat, so as to facilitate the subsequent connection of the primary gear ring and the bearing seat through fasteners, making the structure of the wind turbine drive chain more compact and stable.

[0079] Preferably, the clamping assembly includes a hollow hydraulic jack and a nut, and the hydraulic jack includes a movable part and a fixed part that can move relative to each other; the first positioning assembly includes a first positioning rod, the second end of the first positioning rod passes through the positioning hole of the bearing seat, and the first positioning rod is provided with an external thread; the hydraulic jack is sleeved on the first positioning rod and is located on the side of the bearing seat away from the gear box, the nut is provided on the side of the hydraulic jack away from the bearing seat and cooperates with the external thread of the first positioning rod, and the movable part is used to apply a force to the bearing seat along the axial direction of the main shaft toward the direction of the primary gear ring.

[0080] In this solution, the hydraulic jack is small in size and light in weight, and is easy to install on the first positioning rod. The hydraulic jack is easy to operate, has stable transmission, and high strength, and can steadily press the primary gear ring and the bearing seat.

[0081] The positive and progressive effect of the present invention is that the main shaft system and the gear box are assembled in a horizontal docking manner, which is no longer limited by the hoisting height of the crane and is more suitable for large wind turbine drive chains. During the assembly process, the orientation of the main shaft system and the gear box remains unchanged without multiple flipping. The operator can also enter the main shaft to install the locating pins when the main shaft is placed horizontally, which greatly shortens the working hours, improves production efficiency, and enhances safety. Moreover, the horizontal docking assembly method no longer requires the first-level planetary components of the gear box to be removed separately. The assembled gear box sent by the supplier can also be used directly. If there is a quality problem with the gear box, the responsible party can also be identified. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a wind turbine drive chain according to an embodiment of the present invention.

[0083] Figure 2 It is a schematic diagram of the three-dimensional structure of a spindle system according to an embodiment of the present invention.

[0084] Figure 3 The figure is a schematic diagram of the three-dimensional structure of a gear box according to an embodiment of the present invention.

[0085] Figure 4 It is a schematic diagram of the three-dimensional structure of a first fixing component according to an embodiment of the present invention.

[0086] Figure 5 The figure is a schematic three-dimensional structure diagram of a second bolt according to an embodiment of the present invention.

[0087] Figure 6 FIG. 4 is a schematic diagram of the three-dimensional structure of a third bolt according to an embodiment of the present invention.

[0088] Figure 7 Another three-dimensional structural schematic diagram of a wind turbine drive chain according to an embodiment of the present invention.

[0089] Figure 8 It is a schematic diagram of the three-dimensional structure of a clamping assembly according to an embodiment of the present invention.

[0090] Fig. 9 The figure is a schematic flow chart of a method for assembling a drive chain of a wind turbine generator according to an embodiment of the present invention.

[0091] Description of reference numerals:

[0092] Spindle system 1

[0093] Spindle 11

[0094] Spindle positioning hole 111

[0095] Bearing seat 12

[0096] Bearing seat positioning hole 121

[0097] Gear Box 2

[0098] Primary ring gear 21

[0099] Planet carrier 22

[0100] Box 23

[0101] First fixing component 3

[0102] Fixed block 31

[0103] First bolt 32

[0104] Second fixing component 4

[0105] Second bolt 41

[0106] The third bolt 42

[0107] First gasket 43

[0108] First positioning component 5

[0109] First positioning rod 51

[0110] Second positioning component 6

[0111] Primary positioning pin 61

[0112] Secondary positioning pin 62

[0113] Three-stage positioning pin 63

[0114] Clamping assembly 7

[0115] Hydraulic jack 71

[0116] Nut 72

[0117] Second gasket 73 DETAILED DESCRIPTION

[0118] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0119] Example 1

[0120] like Figure 1-Figure 3 As shown, this embodiment discloses a wind turbine drive chain, including a main shaft system 1 and a gear box 2 .

[0121] like Figure 2 As shown, the spindle system 1 includes a spindle 11 and a bearing seat 12 . The bearing seat 12 is disposed at one end of the spindle 11 close to the gear box 2 , and the spindle 11 can rotate relative to the bearing seat 12 .

[0122] like Figure 3 As shown, the gearbox 2 includes a primary gear ring 21, a planet carrier 22, a housing 23, a sun gear and planetary gears. The primary gear ring 21 and the housing 23 are both connected to the planet carrier 22 and are fixed in position in the gearbox 2. The housing 23 is arranged on the side of the primary gear ring 21 away from the main shaft system 1. The primary gear ring 21 is fixedly connected to the bearing seat 12. The sun gear and the planetary gears are arranged on the inner circumference of the primary gear ring 21. The planetary gears are meshed between the sun gear and the primary gear ring 21. One end of the planet carrier 22 is connected to the sun gear, and the other end of the planet carrier 22 is connected to the main shaft 11. The planetary carrier 22 can rotate with the main shaft 11, thereby controlling the sun gear to drive the planetary gears to rotate.

[0123] like Figure 3-Figure 5 As shown, this embodiment also discloses an assembly tool for a wind turbine drive chain, which is used to assemble the main shaft system 1 and the gear box 2 into a whole. The assembly tool for the wind turbine drive chain includes a first fixing component 3, a second fixing component 4, a first positioning component 5, a second positioning component 6 and a pressing component 7.

[0124] like Figure 3 and Figure 4As shown, the first fixing assembly 3 connects the primary gear ring 21 and the planet carrier 22 to fix the relative position of the primary gear ring 21 and the planet carrier 22. Specifically, the first fixing assembly 3 includes a fixing block 31 and a first bolt 32. The fixing block 31 is arranged on the outer peripheral side of the planet carrier 22 and is installed on the primary gear ring 21. The fixing block 31 is provided with a first threaded hole. Both ends of the first threaded hole are through and the axis of the first threaded hole passes through the outer peripheral surface of the planet carrier 22. During the assembly process, the first bolt 32 is threadedly matched with the first threaded hole. The position of the first bolt 32 is adjusted by screwing the first bolt 32 so that the first bolt 32 can abut against the outer peripheral surface of the planet carrier 22, thereby supporting the planet carrier 22, ensuring that the planet carrier 22 will not fall under the action of gravity, effectively preventing the planet carrier 22 from shifting, improving the alignment accuracy of the subsequent planet carrier 22 and the main shaft 11, and improving the assembly efficiency. Among them, the fixing block 31 can be fixed to the primary gear ring 21 by a detachable connection method such as bolt connection to facilitate later removal.

[0125] like Figure 4 As shown, the fixing block 31 in this embodiment is fixed to an end face of the primary gear ring 21 in its axial direction toward the main shaft system 1, so as to shorten the distance between the fixing block 31 and the planetary carrier 22, shorten the screwing path of the first bolt 32, improve the fixing efficiency, and thus improve the assembly efficiency.

[0126] Furthermore, if Figure 3 As shown, in this embodiment, there are multiple first fixing assemblies 3, and the multiple first fixing assemblies 3 are arranged at intervals along the circumference of the primary gear ring 21, preferably at even intervals, to ensure that the planet carrier 22 is uniformly stressed everywhere and prevent the planet carrier 22 from deflecting. In other alternative embodiments, the number of the first fixing assembly 3 is at least one, and when the number of the first fixing assembly 3 is small, the first fixing assembly 3 is preferably arranged at the lower end area of ​​the planet carrier 22 to better support the planet carrier 22.

[0127] Furthermore, some suppliers have already installed the first-stage ring gear 21 and the planetary carrier 22 together in the gearbox 2 produced by them, and in order to prevent the gearbox 2 from falling apart during transportation, the relative positions of the first-stage ring gear 21 and the planetary carrier 22 are further fixed by fixing parts. These fixing parts will be removed later. In this embodiment, the fixing block 31 is installed at the position where the previous fixing parts were located, and the fixing holes originally provided on the first-stage ring gear 21 for matching the installation of the fixing parts are utilized, thereby saving the process of drilling matching holes for the fixing block 31 separately.

[0128] like Figure 3 , Figure 5 and Figure 6As shown, the housing 23 is disposed on the outer peripheral side of the planetary carrier 22, and the second fixing assembly 4 connects the housing 23 and the planetary carrier 22 to fix the relative positions of the housing 23 and the planetary carrier 22, and further prevents the planetary carrier 22 from falling due to gravity. Specifically, the second fixing assembly 4 includes a second bolt 41 and a third bolt 42. A second threaded hole is provided at the upper end of the planetary carrier 22, and a connecting hole corresponding to the second threaded hole is provided on the housing 23. The second bolt 41 passes through the connecting hole and is threadedly matched with the second threaded hole, thereby tightening the planetary carrier 22 upward. A third threaded hole is provided at the lower end of the box body 23, and the axis of the third threaded hole passes through the outer circumferential surface of the planetary carrier 22. During the assembly process, the third bolt 42 passes through the second threaded hole and cooperates with the second threaded hole. The position of the third bolt 42 is adjusted by screwing the third bolt 42 so that the third bolt 42 abuts against the outer circumferential surface of the planetary carrier 22, thereby lifting the planetary carrier 22 upward to prevent the planetary carrier 22 from falling and shifting, thereby improving the subsequent alignment accuracy of the planetary carrier 22 and the main shaft 11 and improving the assembly efficiency.

[0129] In other alternative embodiments, the second bolt 41 may be provided only at the upper end of the planet carrier 22, or the third bolt 42 may be provided only at the lower end of the planet carrier 22. In this embodiment, the second bolt 41 and the third bolt 42 are provided at the same time to ensure that the planet carrier 22 is uniformly stressed and prevent the planet carrier 22 from deflecting.

[0130] Furthermore, the second fixing assembly 4 further includes a first gasket 43, which is sleeved on the second bolt 41 and located on the outer peripheral side of the box body 23, and the first gasket 43 abuts against the outer peripheral surface of the box body 23. The first gasket 43 can be made of elastic materials such as rubber, and the first gasket 43 is added to the outer peripheral surface of the box body 23 to prevent the second bolt 41 from being over-tightened, which may easily cause damage to the second bolt 41 or the box body 23.

[0131] like Figure 2 , Figure 3 and Figure 7 As shown, the first end of the first positioning assembly 5 is mounted on the primary gear ring 21, and the second end of the first positioning assembly 5 is inserted into the bearing seat positioning hole 121 of the bearing seat 12. Specifically, the first positioning assembly 5 includes a plurality of first positioning rods 51, and the plurality of first positioning rods 51 are arranged at intervals along the circumference of the primary gear ring 21, preferably at even intervals, so as to further improve the positioning accuracy of the primary gear ring 21 and the bearing seat 12 while achieving multi-point positioning. The first positioning rod 51 extends along the axial direction of the primary gear ring 21, and the first end of the first positioning rod 51 is connected to the primary gear ring 21. During the assembly process, the second end of the first positioning rod 51 is gradually inserted into and passes through the bearing seat positioning hole 121 on the bearing seat 12.

[0132] In other alternative embodiments, the number of the first positioning rod 51 is at least one.

[0133] like Figure 2 and Figure 3 As shown, the first end of the second positioning assembly 6 is mounted on the planet carrier 22, and the second end of the second positioning assembly 6 is inserted into the spindle positioning hole 111 of the spindle 11. Specifically, the second positioning assembly 6 includes a plurality of second positioning rods to achieve multi-point positioning of the planet carrier 22 and the spindle 11, thereby improving the positioning accuracy of both. The second positioning rod extends along the axial direction of the primary gear ring 21, and the first end of the second positioning rod is connected to the planet carrier 22. During the assembly process, the second end of the second positioning rod is gradually inserted into and passes through the spindle positioning hole 111 on the spindle 11.

[0134] In other alternative embodiments, the number of the second positioning rod is at least one.

[0135] Furthermore, if Figure 3 As shown, the second end of the first positioning rod 51 extends along the axial direction of the primary gear ring 21 to exceed the second end of the second positioning rod, that is, during the assembly process, the first positioning rod 51 is first inserted into the bearing seat positioning hole 121 to achieve the first positioning of the gear box 2 and the spindle system 1, and to achieve the alignment of the primary gear ring 21 and the bearing seat 12. The second positioning rod is then inserted into the spindle positioning hole 111 to achieve the second positioning of the gear box 2 and the spindle system 1, and to achieve the alignment of the planet carrier 22 and the spindle 11. This improves the alignment accuracy of the gear box 2 and the spindle system 1, and improves the assembly efficiency of the two.

[0136] Furthermore, if Figure 3 As shown, the multiple second positioning rods in this embodiment include a primary positioning pin 61, a secondary positioning pin 62 and a tertiary positioning pin 63. The first ends of the primary positioning pin 61, the secondary positioning pin 62 and the tertiary positioning pin 63 are all connected to the planet carrier 22, and the second ends of the primary positioning pin 61, the secondary positioning pin 62 and the tertiary positioning pin 63 do not exceed the second end of the first positioning rod 51. Among them, the second end of the primary positioning pin 61 extends along the axis direction of the primary gear ring 21 to exceed the second end of the secondary positioning pin 62, and the second end of the secondary positioning pin 62 extends along the axis direction of the primary gear ring 21 to exceed the second end of the tertiary positioning pin 63. That is, during the assembly process, the primary positioning pin 61 is inserted into the corresponding spindle positioning hole 111 before the secondary positioning pin 62, and the secondary positioning pin 62 is inserted into the corresponding spindle positioning hole 111 before the tertiary positioning pin 63. In this embodiment, by setting three positioning pins of different lengths, multiple and multiple positioning of the planet carrier 22 and the spindle 11 is achieved, and the alignment accuracy of the planet carrier 22 and the spindle 11 is further improved.

[0137] Further, the spindle positioning hole 111 includes a first spindle positioning hole matched with the primary positioning pin 61, a second spindle positioning hole matched with the secondary positioning pin 62, and a third spindle positioning hole matched with the tertiary positioning pin 63. The difference between the diameter of the first positioning rod 51 and the diameter of the bearing seat positioning hole 121 is greater than the difference between the diameter of the primary positioning pin 61 and the diameter of the first spindle positioning hole, the difference between the diameter of the primary positioning pin 61 and the diameter of the first spindle positioning hole is greater than the difference between the diameter of the secondary positioning pin 62 and the diameter of the second spindle positioning hole, and the difference between the diameter of the secondary positioning pin 62 and the diameter of the second spindle positioning hole is greater than the difference between the diameter of the tertiary positioning pin 63 and the diameter of the third spindle positioning hole. That is, the positioning accuracy of the first positioning rod 51 and the bearing seat positioning hole 121 is lower than the positioning accuracy of the first-level positioning pin 61 and the first spindle positioning hole, the positioning accuracy of the first-level positioning pin 61 and the first spindle positioning hole is lower than the positioning accuracy of the second-level positioning pin 62 and the second spindle positioning hole, and the positioning accuracy of the second-level positioning pin 62 and the second spindle positioning hole is lower than the positioning accuracy of the tertiary positioning pin 63 and the third spindle positioning hole.

[0138] During the assembly process, the first-stage gear ring 21 and the bearing seat 12 are first positioned by the cooperation of the first positioning rod 51 and the bearing seat positioning hole, and the spindle system 1 and the gear box 2 are initially positioned. Then, the planetary carrier 22 and the spindle 11 are roughly positioned by the cooperation of the first-stage positioning pin 61 and the first spindle positioning hole, and the planetary carrier 22 and the spindle 11 are positioned with medium precision by the cooperation of the second-stage positioning pin 62 and the second spindle positioning hole. Finally, the planetary carrier 22 and the spindle 11 are precisely positioned by the cooperation of the third-stage positioning pin 63 and the third spindle positioning hole, and the subsequent positioning of the spindle system 1 and the gear box 2 is completed. This embodiment reduces the difficulty of positioning the planetary carrier 22 and the spindle 11 by gradually increasing the positioning accuracy requirements of the positioning pins and the spindle positioning holes 111, and reduces the difficulty of positioning the spindle system 1 and the gear box 2 by gradually increasing the positioning accuracy requirements of the spindle system 1 and the gear box 2, thereby improving the positioning efficiency.

[0139] In other alternative embodiments, the second positioning rod may include only one type of positioning pin, or the second positioning rod may include two or more types of positioning pins, and the design is specifically performed according to actual needs.

[0140] like Figure 8As shown, the clamping assembly 7 is used to clamp the primary gear ring 21 and the bearing seat 12 on the axis of the main shaft 11 to reduce the distance between the primary gear ring 21 and the bearing seat 12, so as to facilitate the connection of the primary gear ring 21 and the bearing seat 12 by fasteners in the later stage, so that the structure of the wind turbine drive chain is more compact and stable. Specifically, the first positioning rod 51 in this embodiment is a toothed bar, that is, the first positioning rod 51 has an external thread. The clamping assembly 7 includes a hollow hydraulic jack 71 and a nut 72, and the hydraulic jack 71 includes a moving part and a fixed part that can move relative to each other. The hydraulic jack 71 is sleeved on the first positioning rod 51 and is located on the side of the bearing seat 12 away from the gear box 2. The nut 72 is arranged on the side of the hydraulic jack 71 away from the bearing seat 12 and cooperates with the external thread of the first positioning rod 51, so as to fix the fixed part of the hydraulic jack 71 on the first positioning rod 51. During the assembly process, the hydraulic jack 71 is pressurized to control the moving part to move toward the bearing seat 12, so as to apply a force along the axis direction of the main shaft 11 toward the primary gear ring 21 to the bearing seat 12. The hydraulic jack 71 is small in size and light in weight, and is easy to be installed on the first positioning rod 51. The hydraulic jack 71 is easy to operate, has stable transmission, and has high strength, and can steadily press the primary gear ring 21 and the bearing seat 12.

[0141] In other alternative embodiments, the hydraulic jack 71 may also be disposed on a side of the primary gear ring 21 away from the bearing seat 12 , and the primary gear ring 21 and the bearing seat 12 may be pressed together by applying a force to the primary gear ring 21 .

[0142] Furthermore, if Figure 8 As shown, the clamping assembly 7 further includes a second gasket 73, which is sleeved on the first positioning rod 51 and disposed between the nut 72 and the hydraulic jack 71, and the two ends of the second gasket 73 respectively abut against the fixing parts of the nut 72 and the hydraulic jack 71. The second gasket 73 can be made of elastic materials such as rubber.

[0143] In this embodiment, the planet carrier 22 is supported by the first fixing assembly 3 and the second fixing assembly 4, so that when the gear box 2 is placed horizontally, the planet carrier 22 will not fall due to gravity, and the relative position of the planet carrier 22 and the primary gear ring 21 is guaranteed, so that the horizontal docking assembly of the main shaft system 1 and the gear box 2 can be realized. The first positioning assembly 5 and the second positioning assembly 6 play a role in positioning and guiding the main shaft system 1 and the gear box 2 during the assembly process, reduce the difficulty of docking the main shaft system 1 and the gear box 2, and improve the feasibility and efficiency of the horizontal docking assembly of the main shaft system 1 and the gear box 2.

[0144] During the assembly process, the orientation of the spindle system 1 and the gearbox 2 remains unchanged without multiple flips. The operator can enter the spindle 11 to install the positioning pin when the spindle 11 is placed horizontally, which greatly shortens the working hours, improves production efficiency, and enhances safety. In addition, the horizontal docking assembly method does not require the first-level planetary components of the gearbox 2 to be removed separately. The assembled gearbox 2 sent by the supplier can also be used directly. If there is a quality problem with the gearbox 2, the responsible party can also be identified.

[0145] Example 2

[0146] like Fig. 9 As shown, this embodiment discloses a method for assembling a wind turbine drive chain, and uses the assembly tooling for the wind turbine drive chain in the above-mentioned embodiment 1 to realize the assembly between the main shaft system 1 and the gear box 2.

[0147] like Fig. 9 As shown, the assembly method of the wind turbine drive chain includes the steps of: controlling the axis of the main shaft system 1 and the axis of the gear box 2 to be parallel to the horizontal plane, so as to facilitate the subsequent horizontal assembly of the main shaft system 1 and the gear box 2. The axis of the main shaft system 1 is also the axis of the main shaft 11, and the axis of the gear box 2 is also the axis of the primary gear ring 21.

[0148] like Fig. 9 As shown, the assembly method of the wind turbine drive chain also includes the steps of: connecting the primary ring gear 21 and the planet carrier 22, and fixing the relative positions of the primary ring gear 21 and the planet carrier 22 using the first fixing component 3.

[0149] Specifically, Figure 3 and Figure 4 As shown, the first bolt 32 is controlled to be threadedly engaged with the first threaded hole, the first bolt 32 is screwed, and the position of the first bolt 32 is adjusted to move the first bolt 32 toward the planetary carrier 22 until the first bolt 32 abuts against the outer peripheral surface of the planetary carrier 22 to support the planetary carrier 22, ensure that the planetary carrier 22 does not fall under the action of gravity, effectively prevent the planetary carrier 22 from shifting, improve the subsequent alignment accuracy of the planetary carrier 22 and the main shaft 11, and improve the assembly efficiency.

[0150] like Fig. 9 As shown, the method for assembling the wind turbine drive chain further includes the step of: using the second fixing assembly 4 to fix the relative positions of the housing 23 and the planet carrier 22 .

[0151] Specifically, after controlling the second bolt 41 to pass through the connecting hole on the casing 23, it is threadedly engaged with the second threaded hole, and the second bolt 41 is screwed, and the position of the second bolt 41 is adjusted, so that the second bolt 41 moves toward the planetary carrier 22 until the head of the second bolt 41 abuts against the outer peripheral surface of the casing 23, thereby relying on the casing 23 to bear the gravity of the planetary carrier 22, tightening the planetary carrier 22 upward, improving the subsequent alignment accuracy of the planetary carrier 22 and the main shaft 11, and improving the assembly efficiency.

[0152] Furthermore, the third bolt 42 is controlled to engage with the third threaded hole, the third bolt 42 is screwed, and the position of the third bolt 42 is adjusted to move the third bolt 42 toward the planetary carrier 22 until the third bolt 42 abuts against the outer peripheral surface of the planetary carrier 22, thereby lifting the planetary carrier 22 upward to prevent the planetary carrier 22 from falling and shifting, thereby improving the subsequent alignment accuracy of the planetary carrier 22 and the main shaft 11 and improving the assembly efficiency.

[0153] In this embodiment, the second fixing assembly 4 further fixes the position of the planet carrier 22 in the gear box 2 to prevent the planet carrier 22 from falling due to gravity, thereby improving the subsequent alignment accuracy between the planet carrier 22 and the main shaft 11 and improving the assembly efficiency.

[0154] like Fig. 9 As shown, the assembly method of the wind turbine drive chain also includes the steps of: installing the first end of the first positioning assembly 5 on the primary gear ring 21 , and installing the first end of the second positioning assembly 6 on the planet carrier 22 .

[0155] Specifically, the installation of the first fixing component 3 and the second fixing component 4 are both completed before performing this step.

[0156] like Fig. 9 As shown, the method for assembling the drive chain of a wind turbine generator further includes the step of controlling the axis of the main shaft 11 and the axis of the primary gear ring 21 to be on a horizontal line.

[0157] Specifically, the gearbox 2 is hoisted by a crane, a hand winch is provided on the crane to fix the gearbox 2, and the height and horizontal position of the gearbox 2 are adjusted by moving the crane and adjusting the hand winch, so that the axis of the main shaft 11 can coincide with the axis of the primary gear ring 21.

[0158] like Figure 7 and Fig. 9 As shown, the assembly method of the wind turbine drive chain also includes the steps of: controlling the gear box 2 to move toward the main shaft system 1 along the axial direction of the main shaft 11, so that the second end of the first positioning component 5 is inserted into the bearing seat positioning hole 121 of the bearing seat 12, and the second end of the second positioning component 6 is inserted into the main shaft positioning hole 111 of the main shaft 11.

[0159] After the axes of the main shaft 11 and the first-stage gear ring 21 are aligned, the crane is controlled to drive the gear box 2 to move in the direction of the main shaft system 1. During the movement, the distance between the first-stage gear ring 21 and the bearing seat 12 at different positions is measured to determine whether the gear box 2 is offset. Specifically, multiple and equal numbers of first measuring points and second measuring points are selected on the two opposite end faces of the first-stage gear ring 21 and the bearing seat 12, and the distances between multiple groups of first measuring points on the first-stage gear ring 21 and the corresponding second measuring points on the bearing seat 12 in the axial direction of the main shaft 11 are measured. Then compare whether the maximum difference between the multiple groups of distances is less than or equal to the preset value; if so, continue to move the gear box 2, if not, adjust the position of the gear box 2 relative to the main shaft system 1 so that the axis of the main shaft 11 coincides with the axis of the first-stage gear ring 21.

[0160] Furthermore, during the movement of the gear box 2, the above-mentioned measurement and comparison steps can be performed multiple times to timely measure whether the position of the gear box 2 is offset, so as to timely correct the position of the gear box 2 and improve the alignment accuracy of the gear box 2 and the spindle system 1. The positions of the first measurement point and the second measurement point selected in different measurement steps can be the same or different, and the operator can select according to the actual situation.

[0161] The preset value in this embodiment is set to 2 mm. The preset value should not be too small, otherwise it will increase the number of measurements and reduce assembly efficiency. The preset value should not be too large to reduce the difficulty of adjusting the position of the gear box 2. In other alternative embodiments, the specific value of the preset value can be designed to be other according to actual conditions.

[0162] Furthermore, since the second end of the first positioning rod 51 exceeds the second end of the second positioning rod, during the assembly process, the second end of the first positioning assembly 5 is first inserted into the bearing seat positioning hole 121, and the second end of the second positioning assembly 6 is then inserted into the spindle positioning hole 111. The first positioning rod 51 is used to achieve the first positioning of the gearbox 2 and the spindle system 1, and to align the primary gear ring 21 and the bearing seat 12; the second positioning rod is used to achieve the second positioning of the gearbox 2 and the spindle system 1, and to align the planet carrier 22 and the spindle 11. This improves the alignment accuracy of the gearbox 2 and the spindle system 1, and improves the assembly efficiency of the two.

[0163] Furthermore, the positioning accuracy of the first positioning rod 51 and the bearing seat positioning hole 121 is lower than the positioning accuracy of the second positioning rod and the spindle positioning hole 111. This embodiment gradually increases the positioning accuracy requirements of the spindle system 1 and the gear box 2, thereby reducing the positioning difficulty of the spindle system 1 and the gear box 2 and improving the positioning efficiency.

[0164] Furthermore, since the plurality of second positioning rods are divided into a primary positioning pin 61, a secondary positioning pin 62 and a tertiary positioning pin 63, during the assembly process, the primary positioning pin 61 is inserted into the spindle positioning hole 111 before the secondary positioning pin 62, and the secondary positioning pin 62 is inserted into the spindle positioning hole 111 before the tertiary positioning pin 63. This embodiment realizes multiple and multiple positioning of the planet carrier 22 and the spindle 11 by providing three positioning pins of different lengths, further improving the alignment accuracy of the planet carrier 22 and the spindle 11.

[0165] Among them, the first-level positioning pin 61 and the first spindle positioning hole belong to rough positioning, the second-level positioning pin 62 and the second spindle positioning hole belong to medium-precision positioning, and the third-level positioning pin 63 and the third spindle positioning hole belong to fine positioning. This embodiment reduces the positioning difficulty of the planet carrier 22 and the spindle 11 and improves the positioning efficiency by gradually increasing the positioning accuracy requirements of the positioning pins and the spindle positioning holes 111.

[0166] During the assembly process, if the second positioning rod cannot be inserted into the corresponding spindle positioning hole 111 , the spindle 11 can be rotated to adjust the position between the spindle positioning hole 111 and the second positioning rod to facilitate the insertion of the second positioning rod into the spindle positioning hole 111 .

[0167] like Fig. 9 As shown, the method for assembling the wind turbine drive chain further includes the step of: removing the first fixing assembly 3 .

[0168] Specifically, when there is still a certain distance between the main shaft system 1 and the gear box 2 but the distance is very close, the first fixing component 3 is removed to prevent the first fixing component 3 from interfering with the abutment between the bearing seat 12 and the primary gear ring 21. The specific distance between the main shaft system 1 and the gear box 2 required to remove the first fixing component 3 can be determined by the operator according to his / her experience.

[0169] like Fig. 9 As shown, the method for assembling the wind turbine drive chain further includes the steps of: fixing the main shaft system 1 and the gear box 2 , and removing the first positioning assembly 5 and the second positioning assembly 6 .

[0170] Specifically, when the primary gear ring 21 and the bearing seat 12 are roughly abutted, the clamping assembly 7 is used to further clamp the primary gear ring 21 and the bearing seat 12 on the axis of the main shaft 11 to reduce the distance between the primary gear ring 21 and the bearing seat 12, so as to facilitate the subsequent connection of the primary gear ring 21 and the bearing seat 12 through fasteners, thereby making the structure of the wind turbine drive chain more compact and stable.

[0171] Specifically, the hydraulic jack 71 and the nut 72 are sleeved on the first positioning rod 51, and the hydraulic jack 71 is fixed on the first positioning rod 51 by tightening the nut 72. The hydraulic jack 71 is pressurized so that the moving part of the hydraulic jack 71 moves toward the bearing seat 12 and abuts against the bearing seat 12. After the two abut, the moving part continuously applies a force toward the primary gear ring 21 to the bearing seat 12, so as to press the primary gear ring 21 and the bearing seat 12.

[0172] In other alternative embodiments, other methods may be used to achieve the compression of the primary gear ring 21 and the bearing seat 12. The present embodiment uses a hydraulic jack as the compression assembly 7 because the hydraulic jack 71 is small in size and light in weight, and is easy to install on the first positioning rod 51. The hydraulic jack 71 is easy to operate, has stable transmission, and has high strength, and can smoothly compress the primary gear ring 21 and the bearing seat 12.

[0173] like Fig. 9 As shown, the assembly method of the wind turbine drive chain also includes the following steps: after using the clamping assembly 7 to clamp the primary ring gear 21 and the bearing seat 12 on the axis of the main shaft 11: removing the first positioning assembly 5 and the second positioning assembly 6 to facilitate connecting fasteners between the primary ring gear 21 and the bearing seat 12, and between the primary planetary carrier 22 and the main shaft 11, to ensure stable connection between the gear box 2 and the main shaft system 1.

[0174] Specifically, after the first-stage gear ring 21 and the bearing seat 12 are tightened, the relative positions of the first-stage gear ring 21 and the bearing seat 12 can be locked by fasteners such as bolts, and then the hydraulic jack 71 on the first positioning rod 51 is removed, and then the first positioning rod 51 is removed, and then the remaining positions of the first-stage gear ring 21 and the bearing seat 12 are locked. At this time, the second fixing assembly 4 can also be removed.

[0175] After the first gear ring 21 and the bearing seat 12 are completely locked, the first positioning pin 61, the second positioning pin 62 and the third positioning pin 63 can be removed. After the positioning pins are removed, the hollow pin is inserted into the main shaft positioning hole 111 to connect the main shaft 11 and the planetary carrier 22. The hollow pin is interference-fitted with the fixing holes on the main shaft 11 and the planetary carrier 22 to achieve a fixed connection between the main shaft 11 and the planetary carrier 22.

[0176] Furthermore, the hollow pin can be directly driven into the main shaft positioning hole 111 through a structure such as a hydraulic jack. Compared with the traditional threaded connection, this connection method is more efficient and improves assembly efficiency.

[0177] Furthermore, in addition to being connected by hollow pins, the main shaft 11 and the planet carrier 22 may also be further fixed by fasteners such as bolts.

[0178] In this embodiment, the main shaft system 1 and the gear box 2 are assembled in a horizontal docking manner, which is no longer limited by the hoisting height of the crane and is more suitable for large wind turbine drive chains. During the assembly process, the orientation of the main shaft system 1 and the gear box 2 remains unchanged without multiple flipping. The operator can also enter the main shaft 11 to install the positioning pins when the main shaft 11 is placed horizontally, which greatly shortens the working hours, improves production efficiency, and enhances safety. In addition, the horizontal docking assembly method does not require the first-level planetary components of the gear box 2 to be removed separately. The assembled gear box 2 sent by the supplier can also be used directly. If there is a quality problem with the gear box 2, the responsible party can also be identified.

[0179] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships of the product in normal use, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention, unless otherwise specified herein.

[0180] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for assembling a drive chain of a wind turbine generator, wherein the drive chain of the wind turbine generator comprises a main shaft system and a gear box, wherein the main shaft system comprises a main shaft and a bearing seat, and the gear box comprises a primary gear ring and a planet carrier; characterized in that: The assembly method of the wind turbine drive chain comprises the following steps: Controlling the axis of the main shaft system and the axis of the gear box to be parallel to a horizontal plane; Connecting the primary ring gear and the planet carrier, and fixing the relative positions of the primary ring gear and the planet carrier using a first fixing assembly; Installing the first end of the first positioning assembly on the primary gear ring, and installing the first end of the second positioning assembly on the planet carrier; Control the axis of the main shaft and the axis of the primary gear ring to be on a horizontal line; Controlling the gear box to move along the axis direction of the main shaft toward the main shaft system, so that the second end of the first positioning assembly is inserted into the bearing seat positioning hole of the bearing seat, and the second end of the second positioning assembly is inserted into the main shaft positioning hole of the main shaft; removing the first fixing assembly; Fix the spindle system and the gear box, and remove the first positioning assembly and the second positioning assembly.

2. The method for assembling a wind turbine drive chain according to claim 1, characterized in that: The first fixing assembly includes a fixing block and a first bolt, wherein the fixing block is arranged on the outer peripheral side of the planet carrier and is installed on the primary gear ring, the fixing block is provided with a first threaded hole, the axis of the first threaded hole passes through the outer peripheral surface of the planet carrier, and the first bolt cooperates with the first threaded hole; The step of fixing the relative positions of the primary gear ring and the planet carrier using the first fixing assembly comprises: The first bolt is controlled to be threadedly engaged with the first threaded hole, and the first bolt is screwed so that the first bolt abuts against the outer peripheral surface of the planet carrier.

3. The method for assembling a wind turbine drive chain according to claim 2, characterized in that: The gear box further comprises a box body, and the box body is arranged on a side of the primary gear ring away from the main shaft system; Before the step of installing the first end of the first positioning assembly on the primary gear ring and the step of installing the first end of the second positioning assembly on the planet carrier, the method for assembling the wind turbine drive chain further includes the following steps: A second fixing assembly is used to fix the relative positions of the housing and the planet carrier.

4. The method for assembling a wind turbine drive chain according to claim 3, characterized in that: The second fixing assembly includes a second bolt and a third bolt; a second threaded hole is provided at the upper end of the planet carrier, a connecting hole is provided on the box body, and the second bolt passes through the connecting hole and cooperates with the second threaded hole; a third threaded hole is provided at the lower end of the box body, and the axis of the third threaded hole passes through the outer circumferential surface of the planet carrier, and the third bolt passes through the second threaded hole and cooperates with the second threaded hole; The step of fixing the relative positions of the housing and the planet carrier using the second fixing assembly comprises: Controlling the second bolt to threadably engage with the second threaded hole, and screwing the second bolt so that the head of the second bolt abuts against the outer peripheral surface of the box body; The third bolt is controlled to be threadedly engaged with the third threaded hole, and the third bolt is screwed so that the third bolt abuts against the outer peripheral surface of the planet carrier.

5. The method for assembling a wind turbine drive chain according to claim 1, characterized in that: The first positioning assembly includes a plurality of first positioning rods, the second positioning assembly includes a plurality of second positioning rods, and the second ends of the first positioning rods extend along the axis direction of the primary gear ring to exceed the second ends of the second positioning rods; In the step of controlling the gear box to move toward the spindle system along the axis direction of the spindle, inserting the second end of the first positioning component into the bearing seat positioning hole of the bearing seat, and inserting the second end of the second positioning component into the spindle positioning hole of the spindle: The second end of the first positioning component is first inserted into the bearing seat positioning hole, and the second end of the second positioning component is then inserted into the spindle positioning hole.

6. The method for assembling a wind turbine drive chain according to claim 5, characterized in that: There are multiple second positioning rods, and the multiple second positioning rods include a primary positioning pin, a secondary positioning pin and a tertiary positioning pin; the second end of the primary positioning pin extends along the axis direction of the primary gear ring to exceed the second end of the secondary positioning pin, and the second end of the secondary positioning pin extends along the axis direction of the primary gear ring to exceed the second end of the tertiary positioning pin; In the step of inserting the second end of the second positioning assembly into the spindle positioning hole of the spindle: The primary positioning pin is inserted into the spindle positioning hole before the secondary positioning pin, and the secondary positioning pin is inserted into the spindle positioning hole before the tertiary positioning pin.

7. The method for assembling a wind turbine drive chain according to claim 6, characterized in that: The spindle positioning holes include a first spindle positioning hole, a second spindle positioning hole and a third spindle positioning hole, the first-level positioning pin is inserted into the first spindle positioning hole, the second-level positioning pin is inserted into the second spindle positioning hole, and the third-level positioning pin is inserted into the third spindle positioning hole; The difference between the diameter of the first-level locating pin and the diameter of the first spindle locating hole is greater than the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole, and the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole is greater than the difference between the diameter of the tertiary locating pin and the diameter of the third spindle locating hole.

8. The method for assembling a wind turbine drive chain according to any one of claims 5 to 7, characterized in that: The step of controlling the gear box to move along the main shaft toward the main shaft system comprises: Selecting a plurality of first measuring points and a second measuring point of the same number on both end surfaces of the primary gear ring and the bearing seat, respectively, and measuring the distances between a plurality of groups of the first measuring points and the corresponding second measuring points in the axial direction of the main shaft; Compare whether the maximum difference between the multiple groups of distances is less than or equal to the preset value; if so, continue to move the gearbox, if not, adjust the position of the gearbox relative to the main shaft system so that the axis of the main shaft coincides with the axis of the primary gear ring.

9. The method for assembling a wind turbine drive chain according to claim 8, characterized in that: In the step of comparing whether the maximum difference between the multiple groups of distances is less than or equal to a preset value: the preset value is 2 mm.

10. The method for assembling a wind turbine drive chain according to claim 1, characterized in that: The steps of fixing the spindle system and the gear box include: A clamping assembly is used to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring.

11. The method for assembling a wind turbine drive chain according to claim 10, characterized in that: The clamping assembly includes a hollow hydraulic jack and a nut, and the hydraulic jack includes a moving part and a fixed part that can move relative to each other; the first positioning assembly includes a first positioning rod, the second end of the first positioning rod passes through the positioning hole of the bearing seat, and the first positioning rod is provided with an external thread; the hydraulic jack is sleeved on the first positioning rod and is located on the side of the bearing seat away from the gear box, the nut is provided on the side of the hydraulic jack away from the bearing seat and cooperates with the external thread of the first positioning rod, and the moving part is used to apply a force to the bearing seat along the axial direction of the main shaft toward the direction of the primary gear ring; In the step of using a clamping assembly to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring: the movable part is controlled to abut against the bearing seat by pressurizing the hydraulic jack, and a force is continuously applied to the bearing seat in the direction of the primary gear ring.

12. The method for assembling a wind turbine drive chain according to claim 11, characterized in that: Before the bearing seat and the primary gear ring abut against each other: removing the first fixing assembly; After the step of using a clamping assembly to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring: removing the first positioning assembly and the second positioning assembly.

13. The method for assembling a wind turbine drive chain according to claim 1, characterized in that: In the step of fixing the main shaft system and the gear box and removing the first positioning assembly and the second positioning assembly: after removing the second positioning assembly, the main shaft and the planet carrier are connected by a hollow pin.

14. An assembly tool for a wind turbine drive chain, the wind turbine drive chain comprising a main shaft system and a gear box, the main shaft system comprising a main shaft and a bearing seat, the gear box comprising a primary gear ring and a planet carrier; characterized in that: The assembly tool of the wind turbine drive chain is used in the assembly method of the wind turbine drive chain according to any one of claims 1 to 13, and the assembly tool of the wind turbine drive chain includes a first fixing component, a first positioning component and a second positioning component; The first fixing assembly is connected to the primary gear ring and the planet carrier, and is used to fix the relative position of the primary gear ring and the planet carrier; The first end of the first positioning assembly is mounted on the primary gear ring, and the second end of the first positioning assembly is inserted into the bearing seat positioning hole of the bearing seat; The first end of the second positioning assembly is mounted on the planet carrier, and the second end of the second positioning assembly is inserted into the main shaft positioning hole of the main shaft.

15. The assembly tool for the wind turbine drive chain according to claim 14, characterized in that: The first fixing assembly includes a fixing block and a first bolt. The fixing block is arranged on the outer peripheral side of the planetary carrier and is installed on the primary gear ring. The fixing block is provided with a first threaded hole. The axis of the first threaded hole passes through the outer peripheral surface of the planetary carrier. The first bolt cooperates with the first threaded hole, and the first bolt can abut against the outer peripheral surface of the planetary carrier.

16. The assembly tool for the wind turbine drive chain according to claim 14, characterized in that: The gearbox also includes a housing, which is arranged on a side of the primary gear ring away from the main shaft system; the assembly tooling of the wind turbine drive chain also includes a second fixing component, which connects the housing and the planetary carrier, and is used to fix the relative positions of the housing and the planetary carrier.

17. The assembly tool for the wind turbine drive chain according to claim 16, characterized in that: The second fixing assembly includes a second bolt and a third bolt; A second threaded hole is provided at the upper end of the planet carrier, a connecting hole is provided on the box body, and the second bolt passes through the connecting hole and cooperates with the second threaded hole; A third threaded hole is provided at the lower end of the box body, the axis of the third threaded hole passes through the outer circumference of the planet carrier, the third bolt passes through the second threaded hole and cooperates with the second threaded hole, and the third bolt can abut against the outer circumference of the planet carrier.

18. The assembly tool for the wind turbine drive chain according to claim 14, characterized in that: The first positioning assembly includes a plurality of first positioning rods, the second positioning assembly includes a plurality of second positioning rods, and the second ends of the first positioning rods extend along the axial direction of the primary gear ring to exceed the second ends of the second positioning rods.

19. The assembly tool for the wind turbine drive chain according to claim 18, characterized in that: There are multiple second positioning rods, including a primary positioning pin, a secondary positioning pin and a tertiary positioning pin; the second end of the primary positioning pin extends along the axial direction of the primary gear ring to exceed the second end of the secondary positioning pin, and the second end of the secondary positioning pin extends along the axial direction of the primary gear ring to exceed the second end of the tertiary positioning pin.

20. The assembly tool for the wind turbine drive chain according to claim 19, characterized in that: The spindle positioning holes include a first spindle positioning hole, a second spindle positioning hole and a third spindle positioning hole, the first-level positioning pin is used to be inserted into the first spindle positioning hole, the second-level positioning pin is used to be inserted into the second spindle positioning hole, and the third-level positioning pin is used to be inserted into the third spindle positioning hole; The difference between the diameter of the first-level locating pin and the diameter of the first spindle locating hole is greater than the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole, and the difference between the diameter of the second-level locating pin and the diameter of the second spindle locating hole is greater than the difference between the diameter of the tertiary locating pin and the diameter of the third spindle locating hole.

21. The assembly tool for the wind turbine drive chain according to claim 14, characterized in that: The assembly tool of the wind turbine drive chain also includes a clamping assembly, which is used to clamp the primary gear ring and the bearing seat on the axis of the primary gear ring.

22. The assembly tool for the wind turbine drive chain according to claim 21, characterized in that: The clamping assembly includes a hollow hydraulic jack and a nut, and the hydraulic jack includes a movable part and a fixed part that can move relative to each other; the first positioning assembly includes a first positioning rod, the second end of the first positioning rod passes through the positioning hole of the bearing seat, and the first positioning rod is provided with an external thread; the hydraulic jack is sleeved on the first positioning rod and is located on the side of the bearing seat away from the gear box, the nut is provided on the side of the hydraulic jack away from the bearing seat and cooperates with the external thread of the first positioning rod, and the movable part is used to apply a force to the bearing seat along the axial direction of the main shaft toward the direction of the primary gear ring.

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