Mounting structure of a wind turbine gearbox

Abstract

The utility model relates to wind power gear box technical field, specifically disclose a kind of installation structure of wind power gear box, wherein, box is provided with second through-hole, several hollow pins are connected between gear ring and second through-hole, and first through-hole is communicated with second through-hole for installing fastener, several fasteners and several hollow pins are set one-to-one, and fastener can be set in first through-hole and be connected to gear ring.Hollow pin forms hollow sleeve type structure, so that it maintains the positioning and transmission torque function of hollow pin, and gives it new function as fastener installation channel, fastener can directly pass through the first through-hole of hollow pin, realize the integration of function and structure, it does not need to open any new connection space on gear ring flange, realize the compact design of structure, improve space utilization, provide structural basis for subsequent realization of compact temporary connection or permanent connection.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox technology, and in particular to an installation structure for a wind turbine gearbox. Background Technology

[0002] As a crucial speed-increasing transmission component in wind turbine generator sets, the core function of the gearbox is to efficiently transmit the power generated by the wind turbine under wind power to the generator, ensuring the generator reaches the required operating speed. With the increasing size of wind turbine generator sets, gearboxes with integrated front-end structures are becoming increasingly widely used. However, to meet transportation requirements, the gearbox and main shaft are often transported separately. In this process, due to the inherent constraints of the main bearing housing space, most models are designed with all studs penetrating the gearbox housing and ultimately fixed to the main bearing housing via a gear ring. Therefore, during separate transportation, additional bolts must be added to secure the connection between the gear ring and the housing to prevent the gear ring from becoming loose inside the gearbox. However, with the continuous increase in gearbox size, the number of additional bolts required for separate transportation increases significantly, directly leading to higher requirements on the space required for the connection area between the gear ring and the housing flange. Traditional additional bolt arrangements compress the space and number of pins and bolts in the main load-bearing areas, thereby reducing the safety factor during torque transmission and potentially impacting the reliability of equipment operation.

[0003] Therefore, there is an urgent need for a wind turbine gearbox mounting structure to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an installation structure for a wind turbine gearbox that can effectively improve the stability and reliability of the connection between the gear ring and the gearbox body, and improve space utilization.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides an installation structure for a wind turbine gearbox, including a gear ring, a housing, a plurality of hollow pins, and a plurality of fasteners. The housing has a second through hole, and the plurality of hollow pins are connected between the gear ring and the second through hole. Each hollow pin passes through a first through hole along its axial direction. The first through hole communicates with the second through hole for installing the fasteners. The plurality of fasteners and the plurality of hollow pins are arranged in a one-to-one correspondence, and the fasteners can pass through the first through hole and connect to the gear ring.

[0007] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the fastener includes a head and a connecting part that are fixedly connected. The connecting part passes through the first through hole and is connected to the gear ring. The head is disposed in the second through hole and abuts against the hollow pin.

[0008] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the installation structure of the wind turbine gearbox further includes a plurality of washers, wherein the plurality of washers are provided in a one-to-one correspondence with the plurality of fasteners, and the washers abut against the head and the hollow pin.

[0009] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the fastener is clearance-fitted with the inner wall of the first through hole.

[0010] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the fastener includes a head and a connecting part that are fixedly connected. The connecting part can pass through the second through hole and the first through hole in sequence and be connected to the gear ring. The head abuts against the outer wall of the gearbox.

[0011] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the installation structure of the wind turbine gearbox further includes a plurality of washers, wherein the plurality of washers are provided in a one-to-one correspondence with the plurality of fasteners, and the washers abut against the head and the outer side wall of the gearbox body.

[0012] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the fastener is clearance-fitted with the inner wall of the first through hole, and the fastener is clearance-fitted with the inner wall of the second through hole, wherein the second through hole is a stepped hole.

[0013] As a preferred technical solution for the installation structure of the above-mentioned wind turbine gearbox, the fastener is a bolt, the gear ring is provided with a threaded hole corresponding to the first through hole of the hollow pin, and the fastener is threadedly connected to the threaded hole.

[0014] And / or, the hollow pin is interference-fitted with the gear ring and the second through hole of the housing.

[0015] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the installation structure of the wind turbine gearbox further includes a main bearing housing and a plurality of cylindrical pins, wherein the plurality of cylindrical pins are connected between the main bearing housing and the gear ring.

[0016] As a preferred technical solution for the installation structure of the aforementioned wind turbine gearbox, the hollow pin is disposed on the downwind side of the gear ring, and the cylindrical pin is disposed on the upwind side of the gear ring.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model provides an installation structure for a wind turbine gearbox. The installation structure includes a gear ring, a housing, several hollow pins, and several fasteners. The housing has a second through hole. Several hollow pins are connected between the gear ring and the second through hole, and each hollow pin passes through a first through hole along its axial direction. The first and second through holes communicate for fastener installation. Several fasteners are correspondingly arranged with several hollow pins, and the fasteners can pass through the first through hole and connect to the gear ring. This arrangement, with the first through hole formed by the hollow pin, creates a hollow sleeve-like structure. While maintaining the positioning and torque transmission functions of the hollow pin, it also provides a new function as a fastener installation channel. The fasteners directly pass through the first through hole of the hollow pin, achieving integrated functionality and structure. It eliminates the need for any additional connection space on the gear ring flange, achieving a compact design, improving space utilization, and providing a structural basis for subsequent compact temporary or permanent connections. It also solves the problem of fixing the gear during separate transportation or maintenance. Attached Figure Description

[0019] Figure 1 Schematic diagram of the installation structure of the wind turbine gearbox provided by this utility model Figure 1 ;

[0020] Figure 2 Schematic diagram of the installation structure of the wind turbine gearbox provided by this utility model Figure 2 .

[0021] in:

[0022] 1. Gear ring;

[0023] 2. Box body; 201. Second through hole;

[0024] 3. Hollow pin;

[0025] 4. Fasteners; 41. Head; 42. Connecting parts;

[0026] 5. Washer; 6. Main bearing housing; 7. Cylindrical pin. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0029] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 2As shown, this embodiment provides an installation structure for a wind turbine gearbox. The installation structure includes a gear ring 1, a housing 2, a plurality of hollow pins 3, and a plurality of fasteners 4. The housing 2 has a second through hole 201. The plurality of hollow pins 3 are connected between the gear ring 1 and the second through hole 201. The hollow pins 3 are provided with a first through hole along their axial direction. The first through hole and the second through hole 201 are connected for installing the fasteners 4. The plurality of fasteners 4 and the plurality of hollow pins 3 are arranged in a one-to-one correspondence. The fasteners 4 can pass through the first through hole and be connected to the gear ring 1. With this configuration, the hollow pin 3 forms a hollow sleeve structure by opening the first through hole. While maintaining the positioning and torque transmission functions of the hollow pin 3, it also gives it a new function as an installation channel for the fastener 4. The fastener 4 can pass directly through the first through hole of the hollow pin 3, realizing the integration of function and structure. It does not require any additional connection space to be opened on the flange of the toothed ring 1, realizing a compact design of structure, improving space utilization, providing a structural basis for subsequent compact temporary or permanent connection, and solving the fixing problem during separate transportation or maintenance.

[0033] In this embodiment, please refer to Figure 1 As shown, the fastener 4 includes a head 41 and a connecting part 42 for fixed connection. The connecting part 42 passes through the first through hole and is connected to the toothed ring 1. The head 41 is located in the second through hole 201 and abuts against the hollow pin 3. The head 41 of the fastener 4 is sunk into the second through hole 201 of the housing 2, realizing a completely "embedded" design for the connection, avoiding any external protrusion, freeing up space for the installation and maintenance of other components outside the housing 2, avoiding interference, and optimizing the spatial layout and safety.

[0034] Optionally, in order to further improve the stability of the fastener 4 installation connection, the wind turbine gearbox installation structure also includes a number of washers 5, which are set one-to-one with a number of fasteners 4, and the washers 5 abut against the head 41 and the hollow pin 3.

[0035] Optionally, the fastener 4 is clearance-fitted with the inner wall of the first through hole. This clearance design makes the installation of the fastener 4 easier and avoids assembly difficulties caused by machining or alignment errors; at the same time, it also clarifies that the main torque transmission function is undertaken by the hollow pin 3, and the fastener 4 mainly bears the axial preload.

[0036] As an alternative embodiment, please refer to Figure 2As shown, the fastener 4 includes a head 41 and a connecting part 42 for fixed connection. The connecting part 42 can pass through the second through hole 201 and the first through hole in sequence and connect to the toothed ring 1. The head 41 abuts against the outer wall of the housing 2. With this configuration, the head 41 of the fastener 4 is exposed, and it can be tightened or loosened directly from the outside using standard tools, without the need for complex operations inside the housing 2, which greatly facilitates on-site installation, disassembly (such as removing the transport fixation) or subsequent maintenance. It should be noted that in actual applications, selective configuration can be made according to requirements, and no further limitations are made here.

[0037] Optionally, the installation structure of the wind turbine gearbox also includes a number of washers 5, which are provided one-to-one with a number of fasteners 4, and the washers 5 abut against the outer wall of the head 41 and the housing 2.

[0038] Furthermore, in order to facilitate the installation and positioning of fastener 4 and hollow pin 3, fastener 4 is fitted with the inner wall of the first through hole with clearance, and fastener 4 is fitted with the inner wall of the second through hole 201 with clearance, the second through hole 201 being a stepped hole.

[0039] In this embodiment, in order to achieve precise positioning and effectively transmit shear force (torque), prevent loosening between the gear ring 1 and the housing 2, and ensure the stability of the connection and transmission accuracy, the fastener 4 is a bolt, the gear ring 1 is provided with a threaded hole corresponding to the first through hole of the hollow pin 3, and the fastener 4 is threadedly connected to the threaded hole; and / or, the hollow pin 3 is interference-fitted with the gear ring 1 and the second through hole 201 of the housing 2.

[0040] Furthermore, the bolt can also serve as a permanent mounting component, working together with the hollow pin 3 to transmit torque between the gear ring 1 and the housing 2. This provides another application method, upgrading the temporary connection to a permanent connection, allowing the composite connection formed by the bolt and the hollow pin 3 to transmit torque together, thus improving the overall strength and reliability of the connection structure, and is especially suitable for high torque conditions.

[0041] Optionally, the mounting structure of the wind turbine gearbox also includes a main bearing housing 6 and several cylindrical pins 7, all of which are connected between the main bearing housing 6 and the gear ring 1.

[0042] It should be noted that the hollow pin 3 has the same torque transmission function as the cylindrical pin 7 on the downwind side of the conventional gear ring 1. Both transmit core torque by bearing shear force, thus enabling direct replacement in their original positions. Furthermore, after docking with the main bearing housing 6, if any hollow pin 3 needs to be inspected or replaced, only the single bolt at that specific location needs to be removed for direct operation. No other surrounding connecting bolts need to be loosened or removed, and the remaining bolts remain tightened. This ensures that the alignment and preload of the overall connection interface are not affected, achieving efficient and precise local maintenance. This not only significantly simplifies the installation and subsequent maintenance process, significantly reduces downtime and workload, but also avoids the risk of alignment failure and preload reduction that may result from large-scale bolt removal, greatly improving the reliability and maintenance economy of the entire transmission connection system.

[0043] Optionally, the hollow pin 3 is located on the leeward side of the gear ring 1, and the cylindrical pin 7 is located on the upwind side of the gear ring 1. This arrangement forms a differentiated layout of "upwind cylindrical pin 7 (solid pin) and leeward hollow pin 3". This layout matches the main force direction and comprehensively considers the force characteristics and functional requirements of different positions, ensuring the transmission and positioning of the main load.

[0044] In this embodiment, the hollow pin 3 and the cylindrical pin 7 are arranged symmetrically with respect to the center of the gear ring 1. The symmetrical arrangement makes the torque transmission and support force distribution more balanced and optimizes the stress distribution, avoids stress concentration, and improves the stability and life of the entire transmission chain.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An installation structure for a wind turbine gearbox, characterized in that, The device includes a gear ring (1), a housing (2), a plurality of hollow pins (3) and a plurality of fasteners (4). The housing (2) has a second through hole (201). The plurality of hollow pins (3) are connected between the gear ring (1) and the second through hole (201). The hollow pins (3) are provided with a first through hole along their axial direction. The first through hole and the second through hole (201) are connected to each other for installing the fasteners (4). The plurality of fasteners (4) are provided in a one-to-one correspondence with the plurality of hollow pins (3). The fasteners (4) can pass through the first through hole and be connected to the gear ring (1).

2. The installation structure of the wind turbine gearbox according to claim 1, characterized in that, The fastener (4) includes a head (41) and a connecting part (42) that are fixedly connected. The connecting part (42) passes through the first through hole and is connected to the toothed ring (1). The head (41) is disposed in the second through hole (201) and abuts against the hollow pin (3).

3. The installation structure of the wind turbine gearbox according to claim 2, characterized in that, The installation structure of the wind turbine gearbox also includes several washers (5), and the several washers (5) are arranged one-to-one with the several fasteners (4), and the washers (5) abut against the head (41) and the hollow pin (3).

4. The installation structure of the wind turbine gearbox according to claim 2, characterized in that, The fastener (4) is clearance-fitted with the inner wall of the first through hole.

5. The installation structure of the wind turbine gearbox according to claim 1, characterized in that, The fastener (4) includes a head (41) and a connecting part (42) that are fixedly connected. The connecting part (42) can pass through the second through hole (201) and the first through hole in sequence and be connected to the toothed ring (1). The head (41) abuts against the outer wall of the housing (2).

6. The installation structure of the wind turbine gearbox according to claim 5, characterized in that, The installation structure of the wind turbine gearbox also includes several washers (5), which are arranged one-to-one with several fasteners (4), and the washers (5) abut against the head (41) and the outer wall of the box body (2).

7. The installation structure of the wind turbine gearbox according to claim 5, characterized in that, The fastener (4) is clearance-fitted with the inner wall of the first through hole, and the fastener (4) is clearance-fitted with the inner wall of the second through hole (201), wherein the second through hole (201) is a stepped hole.

8. The installation structure of the wind turbine gearbox according to claim 1, characterized in that, The fastener (4) is a bolt, and the toothed ring (1) is provided with a threaded hole corresponding to the first through hole of the hollow pin (3). The fastener (4) is threadedly connected to the threaded hole. And / or, the hollow pin (3) is interference-fitted with the gear ring (1) and the second through hole (201) of the housing (2).

9. The mounting structure of the wind turbine gearbox according to any one of claims 1-8, characterized in that, The mounting structure of the wind turbine gearbox also includes a main bearing housing (6) and a number of cylindrical pins (7), and the number of cylindrical pins (7) are connected between the main bearing housing (6) and the gear ring (1).

10. The installation structure of the wind turbine gearbox according to claim 9, characterized in that, The hollow pin (3) is located on the downwind side of the gear ring (1), and the cylindrical pin (7) is located on the upwind side of the gear ring (1).

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