CN117662389A

CN117662389A - Method for improving transmission power, transmission system assembly and wind generating set

Info

Publication number: CN117662389A
Application number: CN202211053805.3A
Authority: CN
Inventors: 岳健; 范井齐; 张凌宝
Original assignee: Beijing Goldwind Smart Energy Service Co Ltd
Current assignee: Beijing Goldwind Smart Energy Service Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2024-03-08

Abstract

The utility model relates to a method for improving transmission power, drive train assembly and wind generating set, this method is used for the transmission system, and the transmission system includes transmission shaft, gear box, torque arm and first bearing, and the transmission shaft is connected with the input shaft of gear box, and first bearing supports the transmission shaft and with transmission shaft normal running fit, torque arm cover locates the input shaft. The method includes a second bearing installation step and a vibration reduction component installation step. The second bearing mounting step is to sleeve the second bearing on the transmission shaft and to be arranged at intervals with the first bearing so as to support the transmission shaft together with the first bearing. The vibration damping member mounting step provides a vibration damping member on the torque arm, the vibration damping member being at least partially deformable in a first direction intersecting an axial direction of the drive shaft to resist vibration of the gear case in the first direction. According to the embodiment of the application, the transmission power of the transmission system can be improved, the service life and reliability of the gear box are improved, and the cost is reduced.

Description

Method for improving transmission power, transmission system assembly and wind generating set

Technical Field

The application relates to the technical field of wind power generation, in particular to a method for improving transmission power, a transmission system assembly and a wind generating set.

Background

In the existing wind generating set, the transmission system is a key component of wind power generation, and the normal operation of the transmission system is ensured to be directly related to the reliability and economy of the wind power generation complete machine.

Most of the existing transmission systems adopt a single bearing structure, so that the gear box bears most of the rotating load of the impeller, the failure rate is high, the transmission efficiency is reduced, and higher economic loss is caused.

Disclosure of Invention

The embodiment of the application provides a method for improving transmission power, a transmission system assembly and a wind generating set, which can improve the transmission power of a transmission system, prolong the service life and improve the reliability of a gear box and reduce the cost.

In one aspect, according to an embodiment of the present application, a method for increasing transmission power is provided, for a transmission system, where the transmission system includes a transmission shaft, a gear box, a torque arm, and a first bearing, the transmission shaft is connected to an input shaft of the gear box, the first bearing supports the transmission shaft and is rotationally matched with the transmission shaft, the torque arm is sleeved on the input shaft, and the method includes a second bearing installation step and a vibration reduction component installation step. A second bearing mounting step, namely sleeving the second bearing on the transmission shaft and arranging the second bearing at intervals with the first bearing so as to support the transmission shaft together with the first bearing; and a vibration reduction part mounting step, wherein a vibration reduction part is arranged on the torque arm and can be at least partially deformed in a first direction intersecting with the axial direction of the transmission shaft so as to resist the vibration of the gear box along the first direction.

According to one aspect of an embodiment of the present application, the vibration reduction component mounting step includes: a connecting component mounting step, namely enabling the connecting component to penetrate through the hole of the torque arm to be connected with the torque arm; and an energy absorption component mounting step, namely directly or indirectly connecting the energy absorption component with the torque arm, wherein at least part of the energy absorption component can deform to buffer the vibration of the gear box in the first direction.

According to one aspect of the embodiments of the present application, the connection assembly mounting step includes: providing a connecting assembly, wherein the connecting assembly comprises a cylindrical section and prismatic sections positioned on two sides of the cylindrical section in the axial direction of the connecting assembly; the connecting component is inserted into the hole of the torque arm, and the outer peripheral surface of the cylindrical section is matched with the cambered surface in the hole of the torque arm.

According to an aspect of the embodiments of the present application, after the step of plugging the connection assembly into the hole of the torque arm and making the outer circumferential surface of the cylindrical section mate with the cambered surface in the hole of the torque arm, the method further includes: a fixing member is arranged between the cylindrical section and the torque arm, and the fixing member comprises one of a bolt and a connecting key.

According to one aspect of an embodiment of the present application, the energy absorbing component mounting step includes providing a first U-shaped seat having an opening in a first direction; a first elastic piece is arranged at the bottom of the first U-shaped seat; the first U-shaped seat and the first elastic piece are integrally matched with the prismatic section, the first U-shaped seat and the prismatic section are in interference fit along the second direction, the first direction and the axial direction are mutually perpendicular, and the prismatic section is in surface contact with the first elastic piece; a second elastic piece is arranged on one side end face of the prism section along the first direction, and the second elastic piece is in surface contact with the prism section; a cover is provided on the second elastic member and is connected with the first U-shaped seat.

According to one aspect of an embodiment of the present application, the energy absorbing component mounting step includes: providing a second U-shaped seat, wherein the second U-shaped seat is provided with an opening in a first direction; a third elastic piece is arranged at the bottom of the U-shaped seat; the second U-shaped seat and the third elastic piece are integrally arranged on one side of the torque arm in the first direction, the second U-shaped seat is connected to the torque arm, and the third elastic piece is in contact with the surface of the torque arm.

According to an aspect of the embodiments of the present application, before the second bearing installation step, the method further includes a drive shaft replacement step of replacing the drive shaft of the original drive system with a drive shaft having a longer length to accommodate installation of the second bearing.

In another aspect, there is provided, in accordance with an embodiment of the present application, a drive train assembly comprising: the transmission system comprises a transmission shaft, a gear box, a torque arm and a first bearing, wherein the transmission shaft is connected with an input shaft of the gear box; the second bearing is sleeved on the transmission shaft and is arranged at intervals with the first bearing so as to support the transmission shaft together with the first bearing; and the vibration reduction part is arranged on the torque arm and can be at least partially deformed in a first direction intersecting with the axial direction of the transmission shaft so as to resist the vibration of the gear box along the first direction.

According to one aspect of the embodiments of the present application, the vibration absorbing component includes a connection assembly and an energy absorbing component, at least a portion of the connection assembly is disposed in a hole of the torque arm along an axial direction and is connected with the torque arm, the energy absorbing component is directly or indirectly connected with the torque arm, and at least a portion of the energy absorbing component is capable of being deformed to buffer vibration of the gearbox in a first direction.

According to one aspect of the embodiment of the application, the connecting component comprises a cylindrical section and prismatic sections positioned on two sides of the cylindrical section in the axial direction of the connecting component, the connecting component is inserted into the hole of the torque arm, and the outer peripheral surface of the cylindrical section is matched with the cambered surface in the hole of the torque arm; and/or the connecting component is provided with a through hole penetrating along the axial direction.

According to one aspect of an embodiment of the present application, the orthographic projection of the cylindrical section covers the orthographic projection of the prismatic section in the axial direction.

According to one aspect of an embodiment of the present application, the cylindrical section is in interference fit with the torque arm; alternatively, the vibration damping component comprises a first fastener, the cylindrical section is provided with a first connecting hole, and the first fastener is inserted into the first connecting hole to connect the cylindrical section and the torque arm; and/or the vibration damping component comprises a connecting key, the cylindrical section is provided with a first key groove, the torque arm is provided with a second key groove, and the first key groove is connected with the second key groove through the connecting key.

According to one aspect of embodiments of the present application, the energy absorbing component includes mount pad and elastic component, and the mount pad sets up in the both sides of torque arm along the axial, and the mount pad includes that there is open-ended accommodation chamber in the axial, and prismatic section and elastic component set up in accommodation chamber.

According to an aspect of the embodiments of the present application, the mount pad includes closing cap, bottom plate and the curb plate of connecting closing cap and bottom plate that sets up relatively, and closing cap, bottom plate and curb plate enclose and form and hold the chamber, hold the chamber and be rectangular structure, prism section butt in the curb plate and have the clearance with closing cap and bottom plate, and elastic component sets up in the clearance.

According to an aspect of the embodiments of the present application, the elastic component includes a first elastic member and a second elastic member, where the first elastic member and the second elastic member are disposed between the mounting base and the connection component along a first direction.

According to one aspect of an embodiment of the present application, the vibration reduction member includes a positioning member, the prismatic section has a second connection hole, and the positioning member is inserted into the second connection hole to limit displacement of the elastic assembly in the axial direction.

According to one aspect of embodiments of the present application, the vibration reduction component further includes a second fastener passing through the cover, the side panel, and the bottom panel in a first direction to connect the cover, the side panel, and the bottom panel to form a mount.

According to one aspect of the embodiments of the present application, the energy absorbing component includes a support base and a third elastic member, and the energy absorbing component is disposed on one side of the torque arm in the first direction and is directly connected to the torque arm.

In yet another aspect, a wind turbine generator set is provided according to an embodiment of the present application, comprising a drive train assembly as described above.

The method for improving transmission power, the transmission system assembly and the wind generating set are provided, wherein the method is used for a transmission system, the transmission system comprises a transmission shaft, a gear box, a torque arm and a first bearing, and the method comprises a second bearing installation step and a vibration reduction component installation step, namely a second bearing and a vibration reduction component are added. The second bearing is sleeved on the transmission shaft and is arranged at intervals with the first bearing so as to support the transmission shaft together with the first bearing, and the second bearing is arranged to absorb partial load born by the gear box, so that the loading condition of the gear box is reduced, the service life of the gear box is prolonged, the transmission efficiency of the transmission system is improved, and the cost is reduced. Through set up the damping part on the torque arm, the damping part can be deformed at least partially in the first direction that intersects with the axial of transmission shaft to resist the vibration of gear box along first direction, do benefit to the statically indeterminate power that leads to the gear box to produce because of setting up duplex bearing structure, further improve the reliability of gear box, improve transmission system's transmission efficiency.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a wind turbine generator system according to an embodiment of the present disclosure;

FIG. 2 is a flow chart of a method of increasing transmission power according to one embodiment of the present disclosure;

FIG. 3 is a schematic view of a partial structure of a wind turbine generator system according to an embodiment of the present application;

FIG. 4 is a flow chart of the vibration reduction component mounting steps in the method of one embodiment of the present application;

FIG. 5 is a schematic view of a partial structure of a wind turbine generator system according to another embodiment of the present application;

FIG. 6 is a flow chart of a connection assembly installation step in a method according to one embodiment of the present application;

FIG. 7 is a schematic view of a connection assembly in a wind turbine according to one embodiment of the present disclosure;

FIG. 8 is a flow chart of a connection assembly installation step in a method according to another embodiment of the present application;

FIG. 9 is a flow chart of an energy absorber component mounting step in a method according to one embodiment of the present application;

fig. 10 is an enlarged schematic view of the structure at P in fig. 5;

FIG. 11 is a flow chart illustrating an energy absorber component mounting step in a method according to another embodiment of the present application;

FIG. 12 is a schematic view of a partial structure of a wind turbine generator system according to yet another embodiment of the present application;

Fig. 13 is a flowchart of a method for increasing transmission power according to another embodiment of the present application.

Wherein:

1-a drive train assembly;

10-a transmission shaft; 20-a gear box; 21-an input shaft; 30-torque arm; 40-a first bearing;

50-a second bearing;

60-vibration damping parts; 61-a connection assembly; 61 a-a through hole; 611-a cylindrical section; 611 a-a first connection hole; 611 b-a first keyway; 612-prismatic segments; 612 a-a second connection hole;

62-an energy absorbing component; 621-mounting seats; 621 a-a first U-shaped seat; 6211-capping; 6212-a bottom plate; 6213-side plates; 622-elastic component; 6221-a first elastic member; 6222-a second elastic member; 623-a support; 623 a-a second U-shaped seat; 624-a third elastic member; 63-a second fastener;

2-tower; 3-nacelle; a 4-generator; 5-impeller; 501-a hub; 502-leaf;

x-axis direction; y-a first direction; z-second direction.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The directional terms appearing in the following description are all directions shown in the drawings and are not intended to limit the method of increasing transmission power, the drive train assembly and the wind turbine generator set of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

For a better understanding of the present application, a method of increasing transmission power, a drive train assembly and a wind turbine generator set according to embodiments of the application are described in detail below in connection with fig. 1-13.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present application, and the embodiment of the present application provides a wind turbine generator system, which includes a drive train assembly 1, a tower 2, a nacelle 3, a generator 4, and an impeller 5. The tower 2 is connected to a wind turbine foundation, the nacelle 3 is arranged on top of the tower 2, the generator 4 is arranged on the nacelle 3, in some examples the generator 4 may be located outside the nacelle 3, of course in some examples the generator 4 may also be located inside the nacelle 3. The impeller 5 includes blades 502 and a hub 501, and a plurality of blades 502 are connected to the hub 501, and when wind acts on the blades 502, the wind drives the whole impeller 5 and the rotating shaft of the generator 4 to rotate, so as to convert wind energy into electric energy.

Specifically, referring to fig. 1 and 3, in the operation process of the wind generating set, the blades 502 start to rotate under the action of wind load, the blades 502 drive the hub 501 to rotate, the hub 501 drives the transmission shaft 10 of the drive train assembly 1 to rotate, the transmission shaft 10 drives the input shaft 21 of the gearbox 20 to rotate, so as to drive the rotation shaft of the generator 4 to rotate, so that the generator 4 rotates to generate electricity, and the whole transmission process realizes conversion of wind energy into electric energy.

However, the drive train assembly in the existing wind turbine generator system generally only comprises one bearing, and the gearbox adopting the single bearing structure type bears most of load caused by rotation of the impeller, so that the failure rate of the existing gearbox is higher, the cost of disassembling or replacing the gearbox is increased, the transmission efficiency of the drive train and the operation efficiency of the drive train assembly are reduced, the operation efficiency of the wind turbine generator system is further reduced, and the economic loss problem is caused.

Based on the above drawbacks, the embodiments of the present application provide a method for improving transmission power, which is used for a transmission system, and can improve the transmission power of the transmission system, improve the service life and reliability of a gearbox 20, and reduce the cost, thereby improving the operation efficiency of a transmission assembly 1 and a wind generating set.

Referring to fig. 2 and 3, an embodiment of the present application provides a method for improving transmission power, which is used in a transmission system, the transmission system includes a transmission shaft 10, a gear box 20, a torque arm 30, and a first bearing 40, the transmission shaft 10 is connected with an input shaft 21 of the gear box 20, the first bearing 40 supports the transmission shaft 10 and is in running fit with the transmission shaft 10, the torque arm 30 is sleeved on the input shaft 21, and the method includes the following steps:

s100, a second bearing 50 is installed, wherein the second bearing 50 is sleeved on the transmission shaft 10 and is arranged at intervals with the first bearing 40 so as to support the transmission shaft 10 together with the first bearing 40;

and S200, a vibration reduction part 60 mounting step, wherein the vibration reduction part 60 is arranged on the torque arm 30, and the vibration reduction part 60 can be at least partially deformed in a first direction Y intersecting with the axial direction X of the transmission shaft 10 so as to resist the vibration of the gear box 20 along the first direction Y.

The method for improving transmission power provided by the embodiment of the application adopts a double-bearing structure, wherein the second bearing 50 can absorb most of load to reduce the loading condition of the gear box 20, thereby being beneficial to improving the service life of the gear box 20, reducing the cost and improving the transmission power of a transmission system. In addition, the vibration absorbing component 60 is further arranged to resist the vibration of the gear box 20 along the first direction Y, so that the hyperstatic force on the gear box 20 caused by the arrangement of the double bearing structure can be reduced, the service life and reliability of the gear box 20 are further improved, the maintenance and replacement cost is reduced, and the transmission power of the transmission system is improved.

Specifically, in step S100, the second bearing 50 is disposed close to the gear case 20, and the first bearing 40 is disposed away from the gear case 20, i.e., the second bearing 50 is disposed between the first bearing 40 and the gear case 20. When the impeller 5 rotates, the first bearing 40 and the second bearing 50 jointly support the transmission shaft 10 to rotate, wherein the second bearing 50 can absorb most of the load so as to reduce the load born by the gear box 20, thereby reducing the loading condition of the gear box 20 and prolonging the service life of the gear box 20.

In step S200, by providing the vibration damping member 60 and being at least partially deformable to resist vibrations of the gearbox 20 in the first direction Y, the hyperstatic force to which the gearbox 20 is subjected due to the provision of the second bearing 50 is reduced, the carrying capacity of the gearbox 20 is increased, and thus the reliability of the gearbox 20 is improved.

Alternatively, the vibration damping member 60 may include one, two, or, of course, a plurality. Illustratively, the damping members 60 are provided in two and on either side of the torque arm 30, respectively, to facilitate more uniform and stable resistance to vibrations of the gearbox 20 in the first direction Y.

Alternatively, the first direction Y may extend in a direction perpendicular to the axial direction X, i.e. the first direction Y may be approximately perpendicular to the axial direction X. It will be appreciated that when the drive shaft 10 rotates the input shaft 21, the gearbox 20 will produce vibrations in a first direction Y intersecting the axial direction X.

Referring to fig. 4 and 5, as an alternative embodiment, the mounting step S200 of the vibration reducing part 60 includes:

s210, a connecting component 61 installing step, wherein the connecting component 61 passes through the hole of the torque arm 30 to be connected with the torque arm 30;

s220, an energy absorption component 62 is installed, wherein the energy absorption component 62 is directly or indirectly connected with the torque arm 30, and at least part of the energy absorption component 62 can deform to buffer the vibration of the gear box 20 in the first direction Y.

By means of the arrangement, the load borne by the gear box 20 can be transmitted to the connecting assembly 61 through the torque arm 30, so that the gear box 20 and the connecting assembly 61 vibrate together in the first direction Y, the energy absorbing component 62 can be directly or indirectly connected with the torque arm 30, and the energy absorbing component 62 can buffer the vibration of the connecting assembly 61 in the first direction Y through at least partial deformation of the energy absorbing component 62, so that the vibration of the gear box 20 in the first direction Y is buffered, the service life and reliability of the gear box 20 are improved, the maintenance or replacement cost is reduced, and the transmission efficiency of a transmission system is improved.

In step S210, the connection assembly 61 is connected to the hole of the torque arm 30, and the connection assembly 61 may be disposed entirely in the hole of the torque arm 30 along the axial direction X and connected to the torque arm 30, and of course, the connection assembly 61 may also be disposed at least partially in the hole of the torque arm 30 along the axial direction X and connected to the torque arm 30.

Alternatively, the hole of the torque arm 30 may be a through hole penetrating in the axial direction X.

Alternatively, the connection assembly 61 may be configured to mate with the hole of the torque arm 30 to better cooperate with the gearbox 20.

In step S220, energy absorbing member 62 may be directly coupled to torque arm 30, although it may be indirectly coupled to torque arm 30 through other members.

Referring to fig. 5 to 7, as an alternative embodiment, the step S210 of installing the connection assembly 61 includes:

s211, providing a connection assembly 61, wherein the connection assembly 61 comprises a cylindrical section 611 and prismatic sections 612 positioned on two sides of the cylindrical section 611 in the axial direction X thereof;

s212, the connecting assembly 61 is inserted into the hole of the torque arm 30, and the outer circumferential surface of the cylindrical section 611 is matched with the cambered surface in the hole of the torque arm 30.

By this arrangement, it is advantageous to ensure that the cylindrical section 611 receives vibration in the first direction Y together with the gear case 20 through the torque arm 30, and to ensure that the energy absorbing member 62 deforms at least partially by itself to buffer vibration of the connection assembly 61 in the first direction Y, thereby buffering vibration of the gear case 20 in the first direction Y, improving the service life of the gear case 20, reducing maintenance or replacement costs, and improving transmission efficiency of the transmission system.

In step S211, the connection assembly 61 includes a combination of the cylindrical section 611 and the prismatic section 612, and optionally, the connection assembly 61 may be an integrally formed structure, which is beneficial to improving the processing efficiency. Of course, the connection assembly 61 may also be provided separately, and the cylindrical section 611 and the prismatic section 612 may be manufactured in advance, and then the prismatic section 612 is connected to two sides of the cylindrical section 611 along the axial direction thereof, so as to reduce the processing difficulty and improve the use flexibility.

In step S212, the cylindrical section 611 of the connection assembly 61 is matched with the cambered surface in the hole of the torque arm 30, alternatively, the cylindrical section 611 and the hole of the torque arm 30 may be in interference fit, so as to facilitate improving the connection effectiveness of the connection assembly 61 and the torque arm 30.

Alternatively, the connection assembly 61 may be directly inserted into the hole of the torque arm 30 along the axial direction X and the cylindrical section 611 is matched with the cambered surface in the hole of the torque arm 30, however, the cylindrical section 611 may be inserted into the hole of the torque arm 30 along the axial direction X and matched with the cambered surface of the torque arm 30, and then the prismatic sections 612 are respectively connected and disposed on two sides of the cylindrical section 611 along the axial direction X of the cylindrical section 611.

Referring to fig. 5 to 8, as an alternative embodiment, after step S212 of inserting the connection assembly 61 into the hole of the torque arm 30 and making the outer circumferential surface of the cylindrical section 611 match with the cambered surface in the hole of the torque arm 30, the method further includes:

S213, a fixing member is disposed between the cylindrical section 611 and the torque arm 30, and the fixing member includes one of a bolt and a connection key.

In this embodiment of the present application, the cylindrical section 611 and the torque arm 30 may be connected by setting a fixing member to connect, which is favorable to improving the manufacturing flexibility of the connection assembly 61, favorable to disassembly, and capable of reducing the requirement of processing precision and improving the processing efficiency.

Alternatively, the cylindrical section 611 may be provided with a first connection hole 611a in advance, and a bolt is inserted into the first connection hole 611a at the time of assembly to connect the cylindrical section 611 with the torque arm 30. Alternatively, the torque arm 30 may be provided with a connection hole accordingly.

Alternatively, the number of the first connection holes 611a may be one, two, or, of course, may be provided in plural.

Alternatively, the cylindrical section 611 may be provided with a first key groove 611b in advance, and a connecting key is inserted into the first key groove 611b at the time of assembly to connect the cylindrical section 611 with the torque arm 30. Optionally, the torque arm 30 may be provided with a second keyway accordingly.

Referring to fig. 4 to 10, as an alternative embodiment, the energy absorbing member 62 mounting step S220 includes:

s221, providing a first U-shaped seat 621a, wherein the first U-shaped seat 621a is provided with an opening in a first direction Y;

S2211, a first elastic piece 6221 is arranged at the bottom of the first U-shaped seat 621 a;

s2212, the first U-shaped seat 621a and the first elastic piece 6221 are integrally matched with the prismatic section 612, the first U-shaped seat 621a and the prismatic section 612 are in interference fit along the second direction Z, the first direction Y and the axial direction X are perpendicular to each other, and the prismatic section 612 is in surface contact with the first elastic piece 6221;

s2213, a second elastic member 6222 is disposed on one side end surface of the prism section 612 along the first direction Y, and the second elastic member 6222 is in surface contact with the prism section 612;

s2214, a cover 6211 is provided on the second elastic member 6222 and the cover 6211 is connected to the first U-shaped seat 621 a.

Through this mode setting, set up energy-absorbing part 62 in prismatic section 612 in order to be connected with torque arm 30 indirectly, the load that gear box 20 received can transmit to coupling assembling 61 through torque arm 30 for gear box 20 and coupling assembling 61 take place the vibration together in first direction Y, and energy-absorbing part 62 can cushion coupling assembling 61's vibration in first direction Y through self at least part deformation, thereby cushion gear box 20's vibration in first direction Y, improve gear box 20's life and reliability, reduce maintenance or replacement cost, improve transmission system's transmission efficiency.

Wherein the first elastic member 6221 and the second elastic member 6222 are capable of being deformed, alternatively, the first elastic member 6221 and the second elastic member 6222 may be configured as one of a spring, a rubber, and a memory material.

In step S221, the first U-shaped seat 621a may be an integrally formed structure, which is beneficial to improving the processing efficiency, but may also be configured to be assembled by the bottom plate 6212 and the side plate 6213, which is beneficial to reducing the manufacturing difficulty and facilitating the disassembly to replace the internal components thereof.

In step S2211, the first elastic member 6221 is placed at the bottom of the first U-shaped seat 621a by the opening of the first U-shaped seat 621a in the first direction Y so as to be disposed in the first U-shaped seat 621a in an abutting manner.

In step S2212, the first U-shaped seat 621a and the first elastic member 6221 are integrally sleeved outside the prism section 612 along the axial direction X or the first direction Y, one end of the prism section 612 in the first direction Y abuts against the first elastic member 6221, and the first elastic member 6221 is pressed to be clamped between the first U-shaped seat 621a and the prism section 612.

Wherein, along the second direction Z, the first U-shaped seat 621a is in interference fit with the prism section 612 to ensure that the prism section 612 has only a degree of freedom in the first direction Y, such that the prism section 612 can vibrate only in the first direction Y.

In step S2213, the other end of the prism section 612 in the first direction Y abuts against the second elastic member 6222, that is, the first elastic member 6221 and the second elastic member 6222 are disposed at intervals in the first direction Y and are respectively disposed on the prism section 612 for surface contact, so as to deform to buffer the vibration of the prism section 612 in the first direction Y, thereby buffering the vibration of the gear case 20 in the first direction Y.

Alternatively, the first elastic member 6221 and the second elastic member 6222 may be made of the same material, and of course, the first elastic member 6221 and the second elastic member 6222 may be made of different materials.

In step S2214, the cover 6211 is disposed on the second elastic member 6222 away from the first elastic member 6221 and the cover 6211 is connected to the first U-shaped seat 621a, so as to provide deformation of the first elastic member 6221 and the second elastic member 6222 for positioning and supporting.

Optionally, a positioning member may be disposed on the prism section 612 and extends along the first direction Y, so as to prevent the first elastic member 6221 and the second elastic member 6222 from being displaced along the axial direction X, thereby improving reliability.

In some embodiments, the first elastic member 6221 and the second elastic member 6222 are respectively provided in a laminated plate structure, and exemplary, the first elastic member 6221 and the second elastic member 6222 may respectively include a laminated structure of a rigid plate and a deformable plate, and the deformable plate includes one of a spring, a rubber, and a memory material.

Optionally, the portion of the first elastic member 6221 contacting the surface of the first U-shaped seat 621a and the prism section 612 is a rigid plate, and the portion of the second elastic member 6222 contacting the surface of the cover 6211 and the prism section 612 is a rigid plate, so as to facilitate the service life of the first elastic member 6221 and the second elastic member 6222, thereby ensuring the effectiveness of deformation of the first elastic member 6221 and the second elastic member 6222.

Referring to fig. 4, 11 and 12, as an alternative embodiment, the energy absorbing component 62 mounting step S220 includes:

s222, providing a second U-shaped seat 623a, wherein the second U-shaped seat 623a is provided with an opening in a first direction Y;

s2221, a third elastic piece 624 is arranged at the bottom of the second U-shaped seat 623 a;

s2222, integrally disposing the second U-shaped seat 623a and the third elastic member 624 on one side of the torque arm 30 in the first direction Y, where the second U-shaped seat 623a is connected to the torque arm 30, and the third elastic member 624 is in surface contact with the torque arm 30.

Through the arrangement, the energy absorbing component 62 is directly connected with the torque arm 30, load borne by the gear box 20 can be transmitted to the torque arm 30, and the energy absorbing component 62 can buffer the vibration of the torque arm 30 in the first direction Y through at least partial deformation of the energy absorbing component 62, so that the vibration of the gear box 20 in the first direction Y is buffered, the service life and reliability of the gear box 20 are improved, the maintenance or replacement cost is reduced, and the transmission efficiency of a transmission system is improved.

In step S222, the second U-shaped seat 623a may have the same structure and the same manufacturing method as the first U-shaped seat 621a, which will not be described herein.

In step S2221, the third elastic member 624 can be deformed, and the third elastic member 624 can be made of the same material as the first elastic member 6221 and the second elastic member 6222, which will not be described herein.

In step S2222, the third elastic member 624 is disposed between the second U-shaped seat 623a and the torque arm 30 to deform to buffer the torque arm 30 from vibrating in the first direction Y, thereby buffering the gear case 20 from vibrating in the first direction Y.

It will be appreciated that in this embodiment, whether or not the connection assembly 61 is provided may be selected based on the load bearing capacity of the torque arm 30, and if the load bearing capacity of the torque arm 30 is too small, the connection assembly 61 needs to be provided in the hole of the torque arm 30 to cooperate, and the connection assembly 61 may only include the cylindrical section 611, and the third elastic member 624 is deformed to buffer the torque arm 30 and the connection assembly 61 from vibrating in the first direction Y, so as to buffer the gear case 20 from vibrating in the first direction Y.

Of course, the connection assembly 31 may not be provided if the torque arm 30 has sufficient load carrying capacity.

Optionally, a positioning member may be disposed on the second U-shaped seat 623a, where the positioning member extends along the first direction Y, so as to prevent the third elastic member 624 from being displaced along the axial direction X, thereby improving reliability.

Referring to fig. 3 and 13, as an alternative embodiment, before the second bearing 50 is installed in step S100, the method further includes:

s100', a step of replacing the transmission shaft 10, namely replacing the transmission shaft of the original transmission system with the transmission shaft 10 with a longer length so as to adapt to the installation of the second bearing 50.

The method for improving transmission power provided in the embodiment of the present application further includes a step of replacing the transmission shaft 10 before the step of installing the second bearing 50, by which the transmission shaft of the original transmission system is replaced with a transmission shaft 10 having a longer length, so as to adapt to the installation of the second bearing 50.

The method for improving transmission power provided by the embodiment of the application can provide a new transmission system according to the method, and of course, the second bearing 50 and the vibration reduction component 60 can be added on the basis of the original transmission system so as to reform the old traditional system, thereby improving the transmission efficiency, improving the generated energy and reducing the cost.

Optionally, before the original transmission system is modified, the original transmission shaft may be subjected to simulation calculation, and if the original transmission shaft can be suitable for setting the second bearing 50 to form a dual-bearing structure with the first bearing 40, the original transmission shaft 10 is not required to be replaced, and the second bearing 50 is directly added on the basis of the transmission shaft 10. If the original drive shaft is not suitable for providing the second bearing 50 to form a double bearing structure with the first bearing 40, the original drive shaft is replaced with a form suitable for providing a double shaft layer structure, and then the second bearing 50 is added on the basis of a new drive shaft 10.

Through this mode setting, can improve current transmission system, do benefit to reduce cost, improve the commonality.

With continued reference to fig. 3, an embodiment of the present application also provides a drive train assembly 1 including a drive train, a second bearing 50, and a damping member 60. The transmission system comprises a transmission shaft 10, a gear box 20, a torque arm 30 and a first bearing 40, wherein the transmission shaft 10 is connected with an input shaft 21 of the gear box 20, the first bearing 40 supports the transmission shaft 10 and is in running fit with the transmission shaft 10, and the torque arm 30 is sleeved on the input shaft 21. The second bearing 50 is sleeved on the transmission shaft 10 and is spaced from the first bearing 40, so as to support the transmission shaft 10 together with the first bearing 40. The vibration damping member 60 is provided on the torque arm 30, and the vibration damping member 60 is at least partially deformable in a first direction Y intersecting the axial direction X of the drive shaft 10 to resist vibration of the gear case 20 in the first direction Y.

The drive train assembly 1 provided by the embodiment of the application is used in cooperation with a drive system by arranging the second bearing 50 and the vibration reduction part 60, and the second bearing 50 can absorb most of load to reduce the loading condition of the gear box 20, so that the service life of the gear box 20 is prolonged, the maintenance or replacement cost is reduced, and the operation efficiency of the drive train assembly 1 is improved. And, through setting up the vibration damper 60 and resisting the vibration in the first direction Y of gear box 20, in order to eliminate the hyperstatic force that receives owing to adopting duplex bearing structure's gear box 20, further improve gear box 20's life, reduce cost improves the operating efficiency of drive train assembly 1.

Specifically, the transmission shaft 10 is connected with the input shaft 21 of the gear box 20, the torque arm 30 is sleeved on the input shaft 21, the transmission shaft 10 drives the input shaft 21 to rotate, when the impeller 5 rotates, the impeller 5 drives the transmission shaft 10 to rotate, so that the first bearing 40 and the second bearing 50 rotate, the first bearing 40 and the second bearing 50 work together to absorb most of the load, and the second bearing 50 is arranged to facilitate reducing the load borne by the gear box 20, so that the load bearing condition of the gear box 20 is reduced, and the service life of the gear box 20 is prolonged. By adopting the double bearing structure, the system is in a statically indeterminate structure, so that the vibration reduction component 60 is arranged on the torque arm 30 and can resist the vibration of the gear box 20 along the first direction Y, thereby eliminating the statically indeterminate force generated by the gear box 20, and only enabling the gear box 20 to bear smaller load, thereby prolonging the service life and improving the reliability of the gear box 20.

The second bearing 50 is sleeved on the transmission shaft 10 and is arranged at a distance from the first bearing 40 so as to support the transmission shaft 10 together with the first bearing 40 and be in rotational connection with the transmission shaft 10, and the second bearing 50 is illustratively arranged close to the gear box 20, and the first bearing 40 is arranged far away from the gear box 20, i.e. the second bearing 50 is arranged between the first bearing 40 and the gear box 20.

Alternatively, the vibration damping member 60 may include one, two, or, of course, a plurality.

It will be appreciated that the drive train assembly 1 according to the embodiments of the present application may be produced and sold as a separate component or the like, and of course may be used in the embodiments described above and as an integral part of a wind turbine.

Moreover, the transmission system, the second bearing 50 and the vibration reduction component 60 included in the transmission system assembly 1 according to the embodiment of the present application may be assembled from newly machined components, and of course, the transmission system included in the transmission system assembly 1 may also be an old transmission system, that is, the transmission shaft 10, the gearbox 20, the torque arm 30 and the first bearing 40 included in the old transmission system are all old components, and the new second bearing 50 and the vibration reduction component 60 are used in cooperation with the old transmission system to form the transmission system assembly 1 according to the embodiment of the present application.

Alternatively, when the second bearing 50 and the vibration reduction member 60 are used in the old transmission system to modify the same, the original transmission shaft may be subjected to simulation calculation, and if the original transmission shaft is suitable for setting the second bearing 50 to form a double bearing structure with the first bearing 40, the second bearing 50 is directly added on the basis of the transmission shaft 10 without replacing the original transmission shaft 10. If the original drive shaft is not suitable for providing the second bearing 50 to form a double bearing structure with the first bearing 40, the original drive shaft is replaced with a structure suitable for providing a double-shaft layer structure, and then the second bearing 50 is added to the new drive shaft 10.

With continued reference to fig. 3 and 5, as an alternative embodiment, the vibration absorbing member 60 includes a connection assembly 61 and an energy absorbing member 62, at least a portion of the connection assembly 61 is disposed within a bore of the torque arm 30 along the axial direction X and is connected to the torque arm 30, the energy absorbing member 62 is directly or indirectly connected to the torque arm 30, and at least a portion of the energy absorbing member 62 is deformable to absorb vibrations of the gearbox 20 in the first direction Y.

Through this mode setting, the load that gear box 20 received can transmit to coupling assembling 61 through torque arm 30 for coupling assembling 61 takes place to vibrate in first direction Y, and energy-absorbing part 62 is through self at least partial deformation in order to cushion coupling assembling 61 vibration in first direction Y, thereby cushion gear box 20 vibration in first direction Y, improves gear box 20's life, reduces maintenance or replacement cost, improves drive train assembly 1's operating efficiency.

Alternatively, the connection assembly 61 may be disposed entirely within the bore of the torque arm 30 along the axial direction X and connected to the torque arm 30, and of course, the connection assembly 61 may be disposed at least partially within the bore of the torque arm 30 along the axial direction X and connected to the torque arm 30.

Illustratively, the coupling assembly 61 may be shaped to mate with the aperture of the torque arm 30 such that the coupling assembly 61 is at least partially disposed within the aperture of the torque arm 30.

Alternatively, energy absorbing member 62 may be directly coupled to torque arm 30, although other members may be indirectly coupled to torque arm 30.

With continued reference to fig. 5 and 7, as an alternative embodiment, the connection assembly 61 includes a cylindrical section 611 and prismatic sections 612 located on both sides of the cylindrical section 611 in the axial direction X thereof, and the connection assembly 61 is inserted into the hole of the torque arm 30 such that the outer circumferential surface of the cylindrical section 611 is matched with the cambered surface in the hole of the torque arm 30.

In this way, it is advantageous to ensure the effectiveness of the connection assembly 61 with the torque arm 30, thereby ensuring that vibrations of the gearbox 20 in the first direction Y can be converted into vibrations of the connection assembly 61 in the first direction Y.

In some alternative embodiments, the connection assembly 61 has a through hole 61a extending therethrough in the axial direction X.

By arranging the through holes 61a, the influence of the connection strength of the connecting assembly 61 and the torque arm 30 is reduced, and the safety and the reliability are ensured.

Alternatively, the connection assembly 61 may include only the cylindrical section 611, such that all of the connection assembly 61 can be disposed within the bore of the torque arm 30 along the axial direction X and connected to the torque arm 30.

Alternatively, the connection assembly 61 may include a cylindrical section 611 and prismatic sections 612 located on two sides of the cylindrical section 611 in the axial direction X, where after the connection assembly 61 is inserted into the hole of the torque arm 30, the cylindrical section 611 is connected to the hole of the torque arm 30 in the axial direction X, and the prismatic sections 612 are disposed on two sides outside the hole.

Optionally, the through hole 61a is disposed sequentially through the prism section 612, the cylindrical section 611 and the prism section 612.

As an alternative embodiment, the orthographic projection of the cylindrical section 611 covers the orthographic projection of the prismatic section 612 along the axial direction X.

This arrangement advantageously ensures the effectiveness of the connection assembly 61 through the aperture of the torque arm 30.

As an alternative embodiment, cylindrical section 611 is an interference fit with torque arm 30.

By this arrangement, the cylindrical section 611 is in interference connection with the hole of the torque arm 30, so that the effectiveness of direct or indirect connection of the energy absorbing component 62 with the torque arm 30 is ensured, and the energy absorbing component 62 is at least partially deformable to buffer the vibration of the gearbox 20 in the first direction Y.

In some alternative embodiments, vibration reduction member 60 includes a first fastener, cylindrical section 611 has a first connection hole 611a, and the first fastener is inserted into first connection hole 611a to connect cylindrical section 611 with torque arm 30.

The coupling assembling 61 and torque arm 30 that this application embodiment provided can also be connected through adopting the mode that first fastener connected, do benefit to the dismantlement, and can reduce the requirement of machining precision, improve machining efficiency.

Alternatively, the first fastener may comprise one of a bolt, a screw, or a connecting pin.

In some alternative embodiments, the damping member 60 includes a connecting key, the cylindrical section 611 has a first keyway 611b, and the torque arm 30 has a second keyway, the first keyway 611b being connected to the second keyway by the connecting key.

The coupling assembling 61 and torque arm 30 that this application embodiment provided can also be connected through adopting the mode that connecting key and keyway are connected, do benefit to the dismantlement, and can reduce the requirement of machining precision, improve machining efficiency.

Alternatively, the number of the first key groove 611b and the second key groove may be one or two, but may be plural.

Illustratively, the first keyway 611b extends in a first direction Y with the second keyway.

With continued reference to fig. 5 and 10, as an alternative embodiment, the energy absorbing component 62 includes a mounting seat 621 and an elastic component 622, the mounting seat 621 is disposed on two sides of the torque arm 30 along the axial direction X, the mounting seat 621 includes a receiving cavity having an opening in the axial direction X, and the prism section 612 and the elastic component 622 are disposed in the receiving cavity.

Through this way, the energy absorbing component 62 is indirectly connected with the torque arm 30 through the connecting component 61, so that the energy absorbing component 62 is ensured to be at least partially deformed to buffer the vibration of the connecting component 61 in the first direction Y, thereby buffering the vibration of the gear box 20 in the first direction Y, prolonging the service life and reliability of the gear box 20, and improving the operation efficiency of the transmission assembly 1.

Alternatively, the elastic component 622 includes one of a spring, rubber, and a memory material.

Illustratively, the resilient member 622 is a laminated spring structure, which may include a laminated structure of a layer of rigid sheet material and a layer of deformable sheet material, including one of springs, rubber, and memory materials.

Alternatively, the elastic member 622 may be provided as a single layer or as a laminate structure of two or more layers, each of which may or may not have the same material thickness.

Alternatively, the accommodating cavity may be provided with an opening on one side along the axial direction X, and this opening may be provided on the side of the connection base close to the torque arm 30, i.e. the side of the connection base away from the torque arm 30 is provided in a closed manner, which is advantageous for accommodating the prism section 612 of the connection assembly 61, and for blocking the connection assembly 61, the elastic assembly 622 from the outside, and for protecting the connection assembly 61 and the elastic assembly 622.

Of course, the accommodating cavity can also be provided with openings along two sides in the axial direction X, which is beneficial to reducing raw materials for manufacturing the connecting seat, thereby reducing cost.

With continued reference to fig. 5 and 10, as an alternative embodiment, the mounting base 621 includes a cover 6211, a base 6212, and a side plate 6213 connecting the cover 6211 and the base 6212, where the cover 6211, the base 6212, and the side plate 6213 enclose a receiving cavity, the receiving cavity has a rectangular structure, the prism section 612 abuts against the side plate 6213 and has a gap with the cover 6211 and the base 6212, and the elastic component 622 is disposed in the gap.

By providing the mounting block 621 as being composed of the cover 6211, the bottom plate 6212 and the side plate 6213, the mounting block 621 facilitates disassembly to replace the elastic component 622 or the mounting block 621 itself failure component, and improves assembly and disassembly efficiency, in addition to providing space for positioning and supporting the elastic component 622, thereby improving transmission efficiency.

Optionally, the accommodating cavity has a rectangular structure, which is beneficial to accommodating the prism section 612 and enabling the prism section 612 to abut against the side plate 6213, and enabling the prism section 612 to have a gap with the cover 6211 and the bottom plate 6212, so that the prism section 612 only has a degree of freedom along the first direction Y in the accommodating cavity.

Further, an elastic component 622 is disposed in the gap, and the elastic component 622 is capable of deforming in the first direction Y to buffer vibration of the gear box 20 transmitted to the prism section 612 along the first direction Y, so as to improve service life and reliability of the gear box 20, reduce cost, and further improve operation efficiency of the drive train assembly 1.

As an alternative embodiment, the elastic component 622 includes a first elastic member 6221 and a second elastic member 6222, where the first elastic member 6221 and the second elastic member 6222 are disposed between the mounting seat 621 and the connection component 61 along the first direction Y.

Alternatively, the first elastic member 6221 and the second elastic member 6222 may be made of the same material, but may be made of different materials.

Alternatively, it may be obtained according to the simulation calculation result, which side of the prism section 612 of the connection component 61 along the first direction Y vibrates more frequently and is stressed more, and the elastic component 622 capable of absorbing more vibration is disposed in the gap with more vibration, so as to reduce the cost. Alternatively, the first elastic member 6221 and the second elastic member 6222 are provided as the same material, which is advantageous in improving the assembly efficiency.

With continued reference to fig. 7 and 10, as an alternative embodiment, the vibration reduction member 60 includes a positioning member, the prism section 612 has a second connecting hole 612a, and the positioning member is inserted into the second connecting hole 612a to limit the displacement of the elastic component 622 in the axial direction X.

By this mode setting, it is favorable to installing the location to the elastic component 622 and prevent that it from taking place displacement problem easily in the deformation process, guarantees that the elastic component 622 remains the validity between prismatic section 612 and mount pad 621 all the time to guarantee that the elastic component 622 can deform in order to cushion the reliability of the vibration of gear box 20 in first direction Y.

Alternatively, both end surfaces of the prism section 612 in the first direction Y may be provided with second connection holes 612a, respectively, to connect the positioning pieces.

As an alternative embodiment, the vibration reduction member 60 further includes a second fastener 63, the second fastener 63 passing through the cover 6211, the side plate 6213, and the bottom plate 6212 in the first direction Y to connect the cover 6211, the side plate 6213, and the bottom plate 6212 to form the mounting seat 621.

By providing the second fastener 63 to connect the cover 6211, the side plate 6213, and the bottom plate 6212, connection and disassembly of the mounting seat 621 are facilitated, thereby facilitating assembly and disassembly of the elastic assembly 622 and improving assembly and disassembly efficiency.

Alternatively, the second fastener 63 may comprise one of a bolt, a screw, or a connecting pin.

With continued reference to fig. 3 and 12, as an alternative embodiment, the energy absorbing component 62 includes a support seat 623 and a third elastic member 624, where the energy absorbing component 62 is disposed on one side of the torque arm 30 in the first direction Y and is directly connected to the torque arm 30.

According to the transmission system assembly 1 provided by the embodiment of the application, the energy absorbing component 62 can be directly connected with the torque arm 30, the load borne by the gear box 20 can be transmitted to the torque arm 30, and the energy absorbing component 62 can buffer the vibration of the torque arm 30 in the first direction Y through at least partial deformation of the energy absorbing component 62, so that the vibration of the gear box 20 in the first direction Y is buffered, the service life and the reliability of the gear box 20 are improved, the maintenance or replacement cost is reduced, and the operation efficiency of the transmission system assembly 1 is improved.

Alternatively, the third elastic member 624 may be formed of the same material as the first elastic member 6221 or the second elastic member 6222, and will not be described herein.

Alternatively, the supporting seat 623 may be formed by connecting the bottom plate 6212 and the side plate 6213, and in addition to the space for positioning and supporting the third elastic member 624, the disassembly is facilitated to replace the failed parts of the third elastic member 624 or the mounting seat 621, so as to improve the assembly and disassembly efficiency, thereby improving the transmission efficiency.

Alternatively, the bottom plate 6212, the side plate 6213 and the torque arm 30 may be integrally connected by a third fastener 64, alternatively, the third fastener 64 may comprise one of a bolt, a screw, or a connecting pin.

The embodiment of the application also provides a wind generating set, which comprises the drive train assembly 1.

Because the drive train assembly 1 provided by the embodiment of the application can improve the service life and reliability of the gear box 20, the cost is reduced, and the operation efficiency is improved, the service life and reliability of the whole wind generating set can be improved, the cost is reduced, and the operation efficiency is improved.

While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A method of increasing transmission power for a transmission system comprising a drive shaft (10), a gearbox (20), a torque arm (30) and a first bearing (40), the drive shaft (10) being connected to an input shaft (21) of the gearbox (20), the first bearing (40) supporting the drive shaft (10) and being in rotational engagement with the drive shaft (10), the torque arm (30) being journalled to the input shaft (21), characterized in that the method comprises:

a second bearing (50) installation step, wherein the second bearing (50) is sleeved on the transmission shaft (10) and is arranged at intervals with the first bearing (40) so as to support the transmission shaft (10) together with the first bearing (40);

-a damping member (60) mounting step, wherein the damping member (60) is arranged on the torque arm (30), the damping member (60) being at least partially deformable in a first direction (Y) intersecting an axial direction (X) of the transmission shaft (10) to resist vibrations of the gearbox (20) in the first direction (Y).

2. A method of increasing transmission power according to claim 1, wherein the damping member (60) mounting step comprises:

a connection assembly (61) mounting step of passing the connection assembly (61) through a hole of the torque arm (30) to connect with the torque arm (30);

And an energy absorbing component (62) mounting step of directly or indirectly connecting the energy absorbing component (62) with the torque arm (30), wherein the energy absorbing component (62) can be at least partially deformed to buffer the vibration of the gear box (20) in the first direction (Y).

3. A method of increasing transmission power according to claim 2, wherein the step of mounting the connection assembly (61) comprises:

-providing the connection assembly (61), the connection assembly (61) comprising a cylindrical section (611) and prismatic sections (612) located on both sides of the cylindrical section (611) in the axial direction thereof;

the connecting assembly (61) is inserted into the hole of the torque arm (30) and the outer circumferential surface of the cylindrical section (611) is matched with the cambered surface in the hole of the torque arm (30).

4. A method of increasing transmission power according to claim 3, characterized in that after said step of plugging said connection assembly (61) into said hole of said torque arm (30) and engaging the peripheral surface of said cylindrical section (611) with the cambered surface in said hole of said torque arm (30), it further comprises:

a securing element is arranged between the cylindrical section (611) and the torque arm (30), said securing element comprising one of a screw and a connecting key.

5. A method of increasing transmission power according to claim 3, wherein said energy absorbing member (62) mounting step comprises,

providing a first U-shaped seat (621 a), the first U-shaped seat (621 a) having an opening in the first direction (Y);

a first elastic piece (6221) is arranged at the bottom of the first U-shaped seat (621 a);

-co-operating the first U-shaped seat (621 a) with the first elastic element (6221) integrally with the prismatic section (612), the first U-shaped seat (621 a) being in interference fit with the prismatic section (612) along a second direction (Z), the first direction (Y) and the axial direction (X) being perpendicular to each other, the prismatic section (612) being in surface contact with the first elastic element (6221);

-providing a second elastic member (6222) at one side end face of the prismatic section (612) along the first direction (Y), the second elastic member (6222) being in surface contact with the prismatic section (612);

a cover (6211) is provided on the second elastic member (6222) and the cover (6211) is connected to the first U-shaped seat (621 a).

6. The method of increasing transmission power of claim 2, wherein the energy absorbing component (62) mounting step includes:

-providing a second U-shaped seat (623 a), said second U-shaped seat (623 a) having an opening in said first direction (Y);

A third elastic piece (624) is arranged at the bottom of the second U-shaped seat (623 a);

the second U-shaped seat (623 a) and the third elastic piece (624) are integrally arranged on one side of the torque arm (30) in the first direction (Y), the second U-shaped seat (623 a) is connected with the torque arm (30), and the third elastic piece (624) is in surface contact with the torque arm (30).

7. The method of increasing transmission power according to claim 1, wherein prior to the second bearing (50) mounting step, the method further comprises,

and a step of replacing the transmission shaft (10), namely replacing the transmission shaft of the original transmission system with the transmission shaft (10) with a longer length so as to adapt to the installation of the second bearing (50).

8. A drive train assembly (1), comprising:

the transmission system comprises a transmission shaft (10), a gear box (20), a torque arm (30) and a first bearing (40), wherein the transmission shaft (10) is connected with an input shaft (21) of the gear box (20), the first bearing (40) supports the transmission shaft (10) and is in rotary fit with the transmission shaft (10), and the torque arm (30) is sleeved on the input shaft (21);

the second bearing (50) is sleeved on the transmission shaft (10) and is arranged at intervals with the first bearing (40) so as to support the transmission shaft (10) together with the first bearing (40);

And a vibration damping member (60) provided on the torque arm (30), the vibration damping member (60) being at least partially deformable in a first direction (Y) intersecting an axial direction (X) of the transmission shaft (10) so as to resist vibration of the gear case (20) in the first direction (Y).

9. The drive train assembly (1) according to claim 8, wherein the vibration absorbing member (60) comprises a connection component (61) and an energy absorbing member (62), at least part of the connection component (61) being arranged in a hole of the torque arm (30) in the axial direction (X) and being connected to the torque arm (30), the energy absorbing member (62) being directly or indirectly connected to the torque arm (30), the energy absorbing member (62) being at least partially deformable for damping vibrations of the gearbox (20) in the first direction (Y).

10. The drive train assembly (1) according to claim 9, wherein the connection component (61) comprises a cylindrical section (611) and prismatic sections (612) located on both sides of the cylindrical section (611) in the axial direction thereof, the connection component (61) being inserted into the hole of the torque arm (30) such that the outer peripheral surface of the cylindrical section (611) is mated with the cambered surface in the hole of the torque arm (30);

and/or the connection assembly (61) has a through hole (61 a) penetrating along the axial direction (X).

11. The drive train assembly (1) according to claim 10, characterized in that an orthographic projection of the cylindrical section (611) covers an orthographic projection of the prismatic section (612) along the axial direction (X).

12. The drive train assembly (1) according to claim 10, wherein the cylindrical section (611) is interference fit with the torque arm (30);

alternatively, the vibration reduction member (60) includes a first fastener, the cylindrical section (611) having a first connection hole (611 a), the first fastener being inserted into the first connection hole (611 a) to connect the cylindrical section (611) with the torque arm (30);

and/or the vibration damping component (60) comprises a connecting key, the cylindrical section (611) is provided with a first key groove (611 b), the torque arm (30) is provided with a second key groove, and the first key groove (611 b) and the second key groove are connected through the connecting key.

13. The drive train assembly (1) according to claim 10, wherein the energy absorbing component (62) comprises a mounting seat (621) and an elastic component (622), the mounting seat (621) being arranged on both sides of the torque arm (30) in the axial direction (X), the mounting seat (621) comprising a receiving cavity having an opening in the axial direction (X), the prismatic section (612) and the elastic component (622) being arranged in the receiving cavity.

14. The drive train assembly (1) according to claim 13, wherein the mounting base (621) comprises a cover (6211), a bottom plate (6212) and a side plate (6213) connecting the cover (6211) and the bottom plate (6212) which are oppositely arranged, the cover (6211), the bottom plate (6212) and the side plate (6213) enclose to form the accommodating cavity, the accommodating cavity is of a rectangular structure, the prism section (612) is abutted to the side plate (6213) and has a gap with the cover (6211) and the bottom plate (6212), and the elastic component (622) is arranged in the gap.

15. The drive train assembly (1) according to claim 14, wherein the elastic component (622) comprises a first elastic member (6221) and a second elastic member (6222), the first elastic member (6221) and the second elastic member (6222) being arranged between the mounting seat (621) and the connection component (61) along the first direction (Y).

16. The drive train assembly (1) according to claim 14, wherein the vibration reduction component (60) comprises a positioning member, the prismatic section (612) having a second connection hole (612 a), the positioning member being inserted into the second connection hole (612 a) to limit the displacement of the elastic member (622) in the axial direction (X).

17. The drive train assembly (1) according to claim 14, wherein the vibration reduction component (60) further comprises a second fastener (63), the second fastener (63) passing through the cover (6211), the side plate (6213) and the bottom plate (6212) in the first direction (Y) to connect the cover (6211), the side plate (6213) and the bottom plate (6212) to form the mount (621).

18. The drive train assembly (1) according to claim 9, wherein the energy absorbing component (62) comprises a support seat (623) and a third elastic member (624), the energy absorbing component (62) being arranged on one side of the torque arm (30) in the first direction (Y) and being directly connected to the torque arm (30).

19. A wind power plant comprising a drive train assembly (1) according to any of claims 8 to 18.