Transmission device and wind generating set

Abstract

The utility model relates to a transmission device and a wind generating set, and the transmission device comprises a box body which is provided with a containing cavity, and the inner wall of the box body is provided with a tooth part; the transmission system is arranged in the containing cavity and comprises a mounting frame, a center wheel and a plurality of transmission wheels, and each transmission wheel is meshed with the center wheel and the tooth part; the multiple locking structures are distributed in the circumferential direction of the center wheel at intervals, each locking structure comprises a driving part and a band-type brake assembly, each band-type brake assembly comprises an adapter part, a pressure detection part and a friction matching part, the adapter parts and the friction matching parts are distributed in the radial direction of the center wheel, the pressure detection parts are clamped between the adapter parts and the friction matching parts, and the pressure detection parts are clamped between the pressure detection parts and the friction matching parts. The friction matching piece is arranged to face the peripheral face of the mounting frame in the radial direction, and the driving piece is connected with the adapter piece and is configured to drive the adapter piece to move in the radial direction. According to the self-locking device, the self-locking requirement can be met, the safety of the wind generating set is guaranteed, and meanwhile secondary damage of the self-locking device can be reduced.

Description

Technical Field

[0001] The present application relates to the field of wind power technology, and in particular to a transmission device and a wind turbine generator set. Background Art

[0002] At present, the world has entered the stage of price war for wind turbines. For the current large-megawatt offshore units, they are basically all medium-speed permanent magnet routes. For medium-speed permanent magnet units, there are several main types of failures: such as tooth root fracture, tooth surface bonding, tooth surface wear, plastic deformation and other forms. This is mainly because the units are getting bigger and bigger, and the blades are getting heavier, which brings the blade root load to the transmission device and causes failure.

[0003] The main problem of wind turbines at present comes from overloading. The weight and length of blades have doubled. In order to ensure safety, the weight of newly developed blades is often difficult to control within the theoretical design value. Therefore, the actual blades are about 3% heavier than the theoretical ones. During the installation and operation and maintenance of the unit, the transmission device is easily damaged. After damage, the impeller needs to be locked. At this time, the wind load may encounter sudden situations, bringing sudden uncontrollable gusts that affect the safety of the wind turbine. The current conventional method is to transfer kinetic energy to the high-speed end of the transmission device through the transmission device, and set a locking structure such as a winch at the generator at the high-speed end. Although the locking requirements of the impeller can be guaranteed, the load can only be locked after it is transferred to the high-speed end of the transmission device. In this case, the load must be transferred through the transmission device, which will cause secondary damage to the transmission device. Utility Model Content

[0004] The embodiment of the present application provides a transmission device and a wind turbine generator set. The transmission device can not only meet the self-locking requirements and ensure the safety of the wind turbine generator set, but also reduce secondary damage to the transmission device itself.

[0005] On the one hand, according to an embodiment of the present application, a transmission device is proposed, including: a box body, having a accommodating cavity, the inner wall of the box body is provided with a tooth portion; a transmission system, arranged in the accommodating cavity, the transmission system includes a mounting frame, a center wheel and a plurality of transmission wheels, the plurality of transmission wheels are arranged around the center wheel and respectively rotate with the mounting frame, each transmission wheel is respectively meshed with the center wheel and the tooth portion; a locking structure, the plurality of locking structures are distributed at intervals along the circumference of the center wheel, the locking structure includes a driving member and a brake assembly, the brake assembly includes an adapter, a pressure detection member and a friction mating member, the adapter and the friction mating member are distributed radially along the center wheel, the pressure detection member is clamped between the adapter and the friction mating member, the friction mating member is arranged radially facing the outer peripheral surface of the mounting frame, the driving member is connected to the adapter and is configured to drive the adapter to move radially to adjust the pressure of the friction mating member acting on the mounting frame radially.

[0006] According to one aspect of the embodiment of the present application, the pressure detection component includes a pressure sensor, and the pressure sensor is fixedly connected to one of the adapter and the friction fitting component.

[0007] According to one aspect of an embodiment of the present application, the friction fitting part includes a locking part and a docking part distributed along the radial direction, a groove is provided on the side of the docking part facing the pressure detecting part, the pressure detecting part is located in the groove, and the adapter part extends into the groove and clamps the pressure detecting part with the docking part.

[0008] According to one aspect of the embodiment of the present application, along the circumference of the center wheel, the extension dimension of the locking portion is greater than the extension dimension of the docking portion, and the dimensions of the locking portion protruding from the docking portion at both ends of the circumference are equal.

[0009] According to one aspect of the embodiment of the present application, the mounting frame has an annular outer peripheral surface coaxially arranged with the center wheel, and the side of the locking portion facing the annular outer peripheral surface is an arc-shaped surface and the shape matches the shape of the annular outer peripheral surface.

[0010] According to one aspect of an embodiment of the present application, the driving member includes a holding member and a force-applying member. The holding member partially extends into the adapter and presses against the adapter. One end of the force-applying member abuts against the holding member, and the other end of the force-applying member is radially inserted into the mounting frame and the insertion depth is adjustable.

[0011] According to one aspect of an embodiment of the present application, the housing includes a gear ring and an adapter ring distributed along the axial direction of the center wheel. The gear ring and the adapter ring are detachably connected. The gear ring is provided with a tooth portion. The adapter ring is provided with a plurality of mounting holes. Each locking structure portion is provided in the mounting hole and is connected to the adapter ring.

[0012] According to one aspect of an embodiment of the present application, the adapter ring includes a plurality of arc-shaped units, the plurality of arc-shaped units are distributed along the circumferential direction, and two adjacent arc-shaped units are detachably connected.

[0013] According to one aspect of the embodiment of the present application, the friction fitting part includes one of a nylon block or a plastic block, and a drain hole is provided on the adapter ring.

[0014] On the other hand, according to an embodiment of the present application, a wind turbine generator set is provided, comprising the above-mentioned transmission device.

[0015] According to the transmission device and wind turbine generator set provided by the embodiment of the present application, the transmission device includes a housing, a transmission system and a locking structure. The mounting frame of the transmission system is used to mount multiple transmission wheels, which can be directly or indirectly connected to the power input, such as the wheel hub, to transmit power to the multiple transmission wheels and the center wheel. The locking structure is provided in multiple ways, and the locking and mounting frame can be supported from multiple directions. Since the locking structure includes a driving member and a brake assembly, the brake assembly includes an adapter, a pressure detection member and a friction matching member, the adapter and the friction matching member are distributed along the radial direction of the center wheel, the pressure detection member is clamped between the adapter and the friction matching member, and the friction matching member is arranged radially facing the outer peripheral surface of the mounting frame. The driving member is connected to the adapter and is configured to drive the adapter to move radially, and can adjust the pressure of the friction matching member acting on the mounting frame in the radial direction to achieve the locking requirement of the mounting frame, avoid power transmission to the high-speed end of the transmission device, reduce secondary damage to the transmission device, and improve the safety of the wind turbine generator set. The setting of the pressure detection part can feedback the pressure value of the friction fitting part acting on the mounting frame in the radial direction. Under the premise of ensuring the locking requirement of the mounting frame brake, it can avoid excessive load applied by the driving part, which may cause excessive pressure on the mounting frame and cause deformation. At the same time, it can avoid excessive pressure from crushing the brake assembly as a whole. At the same time, it can also help control the pressure of each locking structure on the mounting frame to remain consistent, thereby reducing the occurrence of overload problems on the mounting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0017] Figure 1 is a structural schematic diagram of a wind turbine generator set according to an embodiment of the present application;

[0018] Figure 2 It is a partial structural schematic diagram of a wind turbine generator set according to an embodiment of the present application;

[0019] Figure 3 It is a structural schematic diagram of a main shaft system of an embodiment of the present application;

[0020] Figure 4 It is a partial structural schematic diagram of a transmission device according to an embodiment of the present application;

[0021] Figure 5 is a partial cross-sectional view of a transmission device according to an embodiment of the present application along the axial direction;

[0022] Figure 6 is a structural schematic diagram of a locking structure of an embodiment of the present application;

[0023] Figure 7 is a partial cross-sectional view of a transmission device along the axial direction of another embodiment of the present application;

[0024] Figure 8 It is a schematic diagram of the partial structure of the generator side of a wind turbine generator set according to an embodiment of the present application.

[0025] in:

[0026] 100- transmission device;

[0027] 10-box; 11-gear ring; 111-tooth portion; 12-adapter ring; 121-arc unit; 122-drain hole;

[0028] 20-transmission system; 21-mounting frame; 211-frame body; 212-connecting shaft; 21a-annular outer peripheral surface; 22-center wheel; 23-transmission wheel;

[0029] 30-locking structure;

[0030] 31-driving member; 311-holding member; 312-force applying member;

[0031] 32-brake assembly; 321-adapter; 322-pressure detection member; 323-friction fitting member; 3231-locking portion; 3231a-arc surface; 3232-joining portion; 3232a-groove;

[0032] 200-spindle system; 201-bearing seat; 202-spindle;

[0033] 300-tower; 400-generator; 500-nacelle; 600-impeller; 601-hub; 602-blade;

[0034] 700-high-speed locking structure;

[0035] X-circumferential; Y-axial; Z-radial.

[0036] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0037] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0038] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the transmission device and wind turbine generator set of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] like Figure 1 As shown, one embodiment of the present application provides a wind turbine generator set, including a wind turbine foundation, a tower 300, a nacelle 500, a generator 400, a transmission system, and an impeller 600. The tower 300 is connected to the wind turbine foundation, the nacelle 500 is arranged at the top of the tower 300, the generator 400 is arranged in the nacelle 500, and the impeller 600 includes a hub 601 and a plurality of blades 602 connected to the hub 601, and the hub 601 of the impeller 600 is connected to the rotor of the generator 400 through the transmission system. When the wind acts on the blades 602, the impeller 600 can drive the rotor of the generator 400 to rotate relative to the stator through the transmission system to convert wind energy into electrical energy, thereby meeting the power generation requirements of the wind turbine generator set.

[0040] like Figures 2 to 4 As shown, a transmission system provided by an embodiment of the present application includes a main shaft system 200 and a transmission device 100, the main shaft system 200 includes a bearing seat 201, a main shaft 202 and a main bearing, the bearing seat 201 is sleeved on the outside of the main shaft 202, and the main bearing is arranged between the bearing seat 201 and the main shaft 202. The transmission device 100 includes a transmission system 20, the transmission system 20 includes a mounting frame 21, a center wheel 22 and a plurality of transmission wheels 23, the plurality of transmission wheels 23 are arranged around the center wheel 22 and respectively rotate with the mounting frame 21, and each of the transmission wheels 23 is respectively meshed with the center wheel 22 and the tooth portion 111. The transmission system 20 of the transmission device 100 can be connected to the hub 601 through the main shaft system 200, so that the power of the hub 601 can be transmitted to the transmission system 20 of the transmission system through the main shaft system 200.

[0041] As the world has entered the stage of wind turbine price war, the current large-megawatt offshore units are basically medium-speed permanent magnet routes. For medium-speed permanent magnet units, there are several main failure forms, including tooth root fracture, tooth surface bonding, tooth surface wear, plastic deformation, etc. This is mainly because the units are getting bigger and bigger, and the blades 602 are getting heavier, which brings the blade root load to the transmission device 100.

[0042] The main problem of current wind turbine generator sets comes from overloading. The weight and length of blades 602 have doubled. In order to ensure safety, the weight of newly developed blades 602 is often difficult to control within the theoretical design value. Therefore, the actual blades 602 are about 3% heavier than the theoretical ones. During the installation and operation and maintenance of the unit, the transmission device 100 is easily damaged. After damage, the impeller 600 needs to be locked. At this time, the wind load may encounter an emergency, bringing sudden uncontrollable gusts. Due to the cost reduction of the unit, the hub 601 needs to be designed with a large structure and a high safety factor for the locking pin. Due to the cost reduction reason, the impeller 600 is not locked separately, otherwise the casting cost of the hub 601 will increase by more than 10%. Therefore, the current conventional method is to transfer kinetic energy to the high-speed end through the transmission device 100. By setting a locking component such as a winch at the high-speed end, although the locking requirement of the impeller 600 can be guaranteed, the load can only be locked after it is transferred to the high-speed end of the transmission device. Then the load must be transferred through the transmission device 100, which will cause secondary damage to the transmission device 100.

[0043] Based on this, an embodiment of the present application provides a new transmission device 100, which can not only ensure the self-locking requirements and the safety of the wind turbine generator set, but also reduce its own secondary damage.

[0044] like Figures 3 to 6 As shown, a transmission device 100 provided by an embodiment of the present application includes a housing 10, a transmission system 20 and a locking structure 30. The housing 10 has a accommodating cavity. The inner wall of the housing 10 is provided with a tooth portion 111. The transmission system 20 is arranged in the accommodating cavity. The transmission system 20 includes a mounting frame 21, a center wheel 22 and a plurality of transmission wheels 23. The plurality of transmission wheels 23 are arranged around the center wheel 22 and are respectively rotatably matched with the mounting frame 21. Each transmission wheel 23 is respectively meshed with the center wheel 22 and the tooth portion 111. Multiple locking structures 30 are distributed at intervals along the circumferential direction X of the center wheel 22. The locking structure 30 includes a driving member 31 and a brake assembly 32. The brake assembly 32 includes an adapter 321, a pressure detection member 322 and a friction fitting member 323. The adapter 321 and the friction fitting member 323 are distributed along the radial direction Z of the center wheel 22. The pressure detection member 322 is clamped between the adapter 321 and the friction fitting member 323. The friction fitting member 323 is arranged along the radial direction Z facing the outer peripheral surface of the mounting frame 21. The driving member 31 is connected to the adapter 321 and is configured to drive the adapter 321 to move along the radial direction Z to adjust the pressure of the friction fitting member 323 acting on the mounting frame 21 along the radial direction Z.

[0045] The transmission device 100 may include a single-stage transmission system 20 or a multi-stage transmission system 20. When a multi-stage transmission system 20 is included, the multi-stage transmission systems 20 may be sequentially connected in transmission. For example, the center wheel 22 of one of two adjacent transmission systems 20 may be connected to the mounting frame 21 of the next transmission system 20.

[0046] A rotating bearing can be provided between the mounting frame 21 of the transmission system 20 and the housing 10, or the mounting frame 21 and the main shaft system 200 can share a bearing, and the housing 10 and the mounting frame 21 can be supported by the bearing in the main shaft system 200.

[0047] The number of transmission wheels 23 included in the transmission system 20 may be three, four or more. The plurality of transmission wheels 23 may be distributed at intervals around the circumference X of the center wheel 22 and mesh with the center wheel 22 and the toothed portion 111 of the housing 10 respectively.

[0048] The number of the locking structures 30 may be three, four or more. The multiple locking structures 30 are distributed at intervals in the circumferential direction X of the center wheel 22. Alternatively, the locking structures 30 may be distributed at intervals and evenly.

[0049] The adapter 321 and the friction fitting member 323 can be movably matched with each other in the radial direction Z of the center wheel 22, or can be transitioned through the pressure detection member 322. The pressure detection member 322 can be connected to the adapter 321 and the friction fitting member 323, or the pressure detection member 322 can be clamped and abutted between the adapter 321 and the friction fitting member 323.

[0050] The driving member 31 can drive the adapter 321 to move along the radial direction Z to change the pressure applied to the friction fitting member 323 .

[0051] In a transmission device 100 provided by one embodiment of the present application, the mounting frame 21 of the transmission system 20 can be directly connected to the power input, for example, the wheel hub 601, or can be indirectly connected to the wheel hub 601 through the main shaft system 200 to transmit power to multiple transmission wheels 23 and the center wheel 22. The locking structure 30 is set to be multiple, and can support the locking mounting frame 21 from multiple directions. Since the locking structure 30 includes a driving member 31 and a brake assembly 32, the brake assembly 32 includes an adapter 321, a pressure detection member 322 and a friction fitting member 323. The adapter 321 and the friction fitting member 323 are distributed along the radial Z direction of the center wheel 22. The pressure detection member 322 is clamped between the adapter 321 and the friction fitting member 323. The friction fitting member 323 is arranged along the radial Z direction facing the outer peripheral surface of the mounting frame 21. The driving member 31 is connected to the adapter 321 and is configured to drive the adapter 321 to move along the radial Z direction. The pressure of the friction fitting member 323 acting on the mounting frame 21 along the radial Z direction can be adjusted to achieve the locking requirement of the mounting frame 21, avoid power transmission to the high-speed end of the transmission device 100, and reduce secondary damage to the transmission device 100. In addition, the setting of the pressure detection member 322 can provide feedback on the pressure value of the friction fitting member 323 acting on the mounting frame 21 along the radial direction Z. Under the requirement of ensuring the brake locking of the mounting frame 21, it can avoid that the load applied by the driving member 31 is too large, resulting in excessive pressure on the mounting frame 21 causing deformation, and avoid that the brake assembly 32 is crushed as a whole due to excessive pressure. At the same time, it can also help control the pressure of each locking structure 30 on the mounting frame 21 to remain consistent, reduce the occurrence of overload problems on the mounting frame 21, and improve the overall safety and reliability of the transmission device 100.

[0052] In some optional embodiments, in a transmission device 100 provided by an embodiment of the present application, the pressure detection component 322 includes a pressure sensor, and the pressure sensor is fixedly connected to one of the adapter 321 and the friction fitting component 323 .

[0053] The pressure sensor may include one of a piezoresistive pressure sensor, a ceramic pressure sensor, and a piezoelectric pressure sensor.

[0054] The pressure sensor can be fixedly connected to the adapter 321 by bonding, embedding, etc. and contact the friction fitting member 323. Of course, the pressure sensor can also be fixedly connected to the friction fitting member 323 by bonding, embedding, etc.

[0055] The electrical signal detected by the pressure sensor can be transmitted via cable transmission or wireless transmission.

[0056] In a transmission device 100 provided by an embodiment of the present application, the pressure detection component 322 includes a pressure sensor, and has high pressure detection accuracy, a small size, and a small occupied area, which is conducive to installation between the adapter 321 and the friction fitting component 323.

[0057] It is understandable that the pressure detection component 322 including a pressure sensor is only an optional implementation. In some embodiments, the pressure detection component 322 can also include a micro pressure gauge, an integrated small multifunctional high-precision push-pull force testing instrument, which can also ensure the detection of pressure data.

[0058] In some optional embodiments, in a transmission device 100 provided by an embodiment of the present application, the friction fitting part 323 includes a locking part 3231 and a docking part 3232 distributed along the radial direction Z, and a groove 3232a is provided on the side of the docking part 3232 facing the pressure detecting part 322, the pressure detecting part 322 is located in the groove 3232a, and the adapter 321 partially extends into the groove 3232a and clamps the pressure detecting part 322 with the docking part 3232.

[0059] The groove 3232a provided on the docking portion 3232 can be formed by being recessed along the radial direction Z starting from one end of the docking portion 3232 away from the locking portion 3231. The shape of the groove 3232a can match the shape of the pressure detection member 322. For example, the projection shape of the groove 3232a in the radial direction Z can be circular or polygonal. The depth of the groove 3232a in the radial direction Z is greater than the thickness of the pressure detection member 322. The shape of one end of the adapter 321 facing the friction fitting member 323 in the radial direction Z can match the shape of the groove 3232a. The adapter 321 can be inserted into the groove 3232a and movably matched with the docking portion 3232.

[0060] The transmission device 100 provided in one embodiment of the present application, by providing a groove 3232a on the docking part 3232, and making the pressure detection part 322 located in the groove 3232a and the adapter part extending into the groove 3232a, can limit the pressure detection part 322 by the wall of the groove 3232a formed by the docking part 3232 and the adapter 321, so as to prevent the pressure detection part 322 from being separated from the docking area between the adapter 321 and the friction fitting part 323, ensure the stability of pressure detection, and facilitate the positioning of the pressure detection part 322 during installation. In addition, the shape of one end of the adapter 321 facing the friction fitting part 323 in the radial direction Z can match the shape of the groove 3232a, so that when the driving part 31 drives the adapter 321 to move along the radial direction Z, the groove 3232a can provide a guiding effect for the movement of the driving part 31, ensure the centering and pressing requirements when pressing the friction fitting part 323 again, and then ensure the reliability of locking the mounting frame 21.

[0061] In some optional embodiments, in a transmission device 100 provided by an embodiment of the present application, an extension dimension of the locking portion 3231 along the circumferential direction X of the center wheel 22 is greater than an extension dimension of the docking portion 3232, and the dimensions of the locking portion 3231 protruding from the docking portion 3232 at both ends of the circumferential direction X are equal.

[0062] The width of the locking portion 3231 in the circumferential direction X is greater than the width of the docking portion 3232. The equal protrusions of the two ends of the locking portion 3231 in the circumferential direction X from the docking portion 3232 can be understood as follows: along the circumferential direction X, the locking portion 3231 is symmetrically distributed relative to the docking portion 3232.

[0063] A transmission device 100 provided in an embodiment of the present application makes the extension dimension of the locking portion 3231 larger than the extension dimension of the docking portion 3232 along the circumferential direction X of the center wheel 22, thereby ensuring the support requirement of the docking portion 3232 for the locking portion 3231 and increasing the matching area between the locking portion 3231 and the mounting frame 21, thereby increasing the friction braking ability of the locking portion 3231 on the mounting frame 21 and improving the stability of the locking portion 3231.

[0064] In some optional embodiments, in a transmission device 100 provided by an embodiment of the present application, the mounting frame 21 has an annular outer peripheral surface 21a coaxially arranged with the center wheel 22, and the locking portion 3231 has an arcuate surface 3231a on the side facing the annular outer peripheral surface 21a and the shape matches the shape of the annular outer peripheral surface 21a.

[0065] The side of the locking portion 3231 facing the outer peripheral surface of the replacement is an arcuate surface 3231a, and the arcuate surface 3231a can be recessed in the radial direction Z away from the side of the mounting frame 21.

[0066] A transmission device 100 provided in an embodiment of the present application has a locking portion 3231 with a curved surface 3231a on the side facing the annular outer peripheral surface 21a, so that during the locking process of the mounting frame 21, the contact area between the locking portion 3231 and the annular outer peripheral surface of the mounting frame can be increased, and the friction force can be increased. At the same time, the design of the curved surface 3231a can provide a certain resistance in the rotation direction of the mounting frame 21, which is beneficial to the deceleration locking of the mounting frame 21.

[0067] In some optional embodiments, the locking portion 3231 may be an arc-shaped sheet structure, and the docking portion 3232 may be a columnar structure, which may be cylindrical, or of course, prism-shaped, such as a quadrangular prism, a pentagonal prism, etc. The locking portion 3231 adopts the above form, which has a simple structure and is convenient for installation and locking of the mounting frame 21.

[0068] In some optional embodiments, in the transmission device 100 provided in one embodiment of the present application, the locking portion 3231 and the docking portion 3232 of each friction fitting 323 may be an integrated structure, which is convenient for molding and has high compressive strength.

[0069] In some optional embodiments, a transmission device 100 provided in one embodiment of the present application, the mounting frame 21 includes a connecting shaft 212 and a frame body 211, and the connecting shaft 212 can be a solid shaft or a hollow shaft, and can be a hollow shaft. The outer periphery of the connecting shaft 212 forms the annular outer peripheral surface 21a mentioned above. The radial dimension of the frame body can be larger than the radial dimension of the connecting shaft, and it can be disc-shaped, and the two ends of the transmission wheel 23 in the axial direction Y can be respectively connected to the frame body and rotated together. A plurality of locking structures 30 can be arranged at intervals around the outer periphery of the connecting shaft.

[0070] In some optional embodiments, a transmission device 100 is provided in one embodiment of the present application, wherein the driving member 31 includes a pressing member 311 and a force-applying member 312, wherein the pressing member 311 partially extends into the adapter 321 and presses against the adapter 321, wherein one end of the force-applying member 312 abuts against the pressing member 311, and the other end of the force-applying member 312 is inserted into the box body 10 along the radial direction Z, and the insertion depth is adjustable.

[0071] The number of the force applying members 312 may be two, three or more. A plurality of force applying members 312 may be arranged around the brake assembly 32 , and each force applying member 312 cooperates with the pressing member 311 respectively.

[0072] The force-applying member 312 can be plugged into the holding member 311 and the box body 10 simultaneously, and the force-applying member 312 can have a protrusion to abut against the holding member 311. The force-applying member 312 and the box body 10 can be plugged together, and after being plugged in place, the relative position between the force-applying member 312 and the box body 10 can be locked by pin locking or thread self-locking. The thread self-locking method can be optionally adopted, that is, the force-applying member 312 can be in the form of a bolt or a screw, and the insertion depth on the box body 10 can be adjusted by screwing the force-applying member 312.

[0073] A structure such as a card slot may be provided on the adapter 321 , and the holding member 311 is partially extended into the card slot to define a relative position with the adapter 321 .

[0074] In a transmission device 100 provided by an embodiment of the present application, the driving member 31 adopts the above-mentioned structural form, and the force acting on the holding member 311 can be adjusted by adjusting the depth of the force-applying member 312 inserted into the box body 10. The force acting on the holding member 311 is transmitted to the adapter 321, and then transmitted to the friction fitting member 323 by the adapter 321 through the pressure detection member 322, so that the pressure of the friction fitting member 323 on the mounting frame 21 can be adjusted. The brake requirement for the mounting frame 21 is guaranteed.

[0075] It is understandable that the above-mentioned form of the driving member 31 is only an optional method. In some embodiments, the driving member 31 can also use a linear motor and a telescopic cylinder structure to drive the adapter 321 to move along the radial direction Z to ensure the pressure adjustment requirements of the mounting frame 21.

[0076] In some optional embodiments, a transmission device 100 is provided in one embodiment of the present application, wherein the housing 10 includes a ring gear 11 and an adapter ring 12 distributed along the axial direction Y of the center wheel 22, the ring gear 11 and the adapter ring 12 are detachably connected, the ring gear 11 is provided with a tooth portion 111, and the adapter ring 12 is provided with a plurality of mounting holes, and each locking structure 30 is partially disposed in the mounting hole and connected to the adapter ring 12.

[0077] The gear ring 11 and the adapter ring 12 are separately arranged and detachably connected. Optionally, they can be detachably connected to each other using connecting pieces, which include but are not limited to bolts, screws, rivets, etc.

[0078] The multiple mounting holes provided on the adapter ring 12 can be arranged one-to-one with the locking structure 30. Optionally, the mounting holes of the docking portion 3232 of the locking structure 30 can be arranged so that the adapter ring 12 protrudes in a direction away from the mounting frame 21, and the drive member 31 can be connected to the adapter ring 12 and the insertion depth on the adapter ring 12 is adjustable.

[0079] The transmission device 100 provided in one embodiment of the present application, by making the housing 10 include the gear ring 11 and the adapter ring 12 and making the two detachably connected, can select adapter rings 12 of different radial sizes to dock with the main shaft system 200 as needed, that is, different adapter rings 12 are used to achieve universal interfaces of different units, thereby improving the versatility of the transmission device 100. At the same time, the mounting holes provided on the adapter ring 12 allow the locking structure 30 to be partially located inside the adapter ring 12 and partially located outside the adapter ring 12. When the space between the adapter ring 12 and the mounting frame 21 is insufficient, it is convenient to install the locking structure 30 in a limited space and realize the locking function.

[0080] like Figure 7 As shown, in some optional embodiments, a transmission device 100 provided by an embodiment of the present application, the adapter ring 12 includes a plurality of arc units 121, the plurality of arc units 121 are distributed along the circumferential direction X, and two adjacent arc units 121 are detachably connected.

[0081] The number of the arc-shaped units 121 may be two, three or more, and two adjacent arc-shaped units 121 may be detachably connected via a connecting member such as a magnetic attraction or a bolt.

[0082] A transmission device 100 provided in an embodiment of the present application enables the adapter ring 12 to include a plurality of detachably connected arc-shaped units 121, so that the transmission device 100 can be designed to check grease, bearings, lubrication and other structures according to operation and maintenance needs through a split design, and can also be designed to achieve modular combination through a segmented design, leaving room for subsequent increases in unit capacity and volume.

[0083] In some optional embodiments, in a transmission device 100 provided in one embodiment of the present application, the friction fitting 323 includes one of a nylon block and a plastic block, and a drain hole 122 is provided on the adapter ring 12. The number of the drain hole 122 can be one or more than two. When there are more than two, the more than two drain holes 122 are spaced and evenly arranged.

[0084] The friction fitting member 323 can be made of nylon or plastic as a whole, or the part of the friction fitting member 323 facing the mounting frame 21, such as the locking portion 3231, can be made of nylon or plastic. The locking portion 3231 and the docking portion 3232 can be connected as a whole by bonding or injection molding.

[0085] The transmission device 100 provided in one embodiment of the present application makes the friction fitting member 323 include a nylon block or a plastic block, so that the friction fitting member 323 and the mounting frame 21 can achieve a soft-hard fit, thereby protecting the mounting frame 21 from damage. When the friction fitting member 323 is worn to a certain extent, the transmission device 100 can be used for a long time by replacing the locking member, thereby increasing the service life. The correspondingly arranged discharge hole 122 can discharge the wear debris generated by friction immediately, thereby reducing the impact on the power transmission of the transmission device 100.

[0086] In some optional embodiments, such as Figure 8 As shown, a wind turbine generator set provided by an embodiment of the present application may also be provided with a high-speed locking structure 700 on the generator 400 side to achieve high-speed end locking of the transmission device 100 and improve the safety of the wind turbine generator set.

[0087] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A transmission device, characterized in that: include: The box body has a containing cavity, and the inner wall of the box body is provided with a tooth portion; A transmission system is arranged in the accommodating cavity, the transmission system comprises a mounting frame, a center wheel and a plurality of transmission wheels, the plurality of transmission wheels are arranged around the center wheel and respectively rotatably cooperate with the mounting frame, and each of the transmission wheels is respectively meshed with the center wheel and the toothed portion; A locking structure, wherein a plurality of the locking structures are spaced apart along the circumference of the center wheel, the locking structure comprises a driving member and a brake assembly, the brake assembly comprises an adapter, a pressure detecting member and a friction fitting member, the adapter and the friction fitting member are distributed along the radial direction of the center wheel, the pressure detecting member is clamped between the adapter and the friction fitting member, the friction fitting member is arranged facing the outer peripheral surface of the mounting frame along the radial direction, the driving member is connected to the adapter and is configured to drive the adapter to move along the radial direction to adjust the pressure of the friction fitting member acting on the mounting frame along the radial direction.

2. The transmission device according to claim 1, characterized in that: The pressure detection component includes a pressure sensor, and the pressure sensor is fixedly connected to one of the adapter and the friction fitting component.

3. The transmission device according to claim 1, characterized in that: The friction fitting part includes a locking part and a docking part distributed along the radial direction, the docking part is provided with a groove on the side facing the pressure detection part, the pressure detection part is located in the groove, the adapter part extends into the groove and clamps the pressure detection part with the docking part.

4. The transmission device according to claim 3, characterized in that: Along the circumferential direction of the center wheel, the extension dimension of the locking portion is greater than the extension dimension of the docking portion, and the locking portion protrudes from the docking portion by the same dimensions at both ends of the circumferential direction.

5. The transmission device according to claim 3, characterized in that: The mounting frame has an annular outer peripheral surface coaxially arranged with the center wheel, and the locking portion has an arc-shaped surface on one side facing the annular outer peripheral surface and its shape matches the shape of the annular outer peripheral surface.

6. The transmission device according to claim 1, characterized in that: The driving member includes a holding member and a force member, wherein the holding member partially extends into the adapter and presses against the adapter, one end of the force member abuts against the holding member, and the other end of the force member is inserted into the box body along the radial direction and the insertion depth is adjustable.

7. The transmission device according to any one of claims 1 to 6, characterized in that: The housing includes a gear ring and an adapter ring distributed along the axial direction of the center wheel. The gear ring is detachably connected to the adapter ring. The gear ring is provided with the tooth portion. The adapter ring is provided with a plurality of mounting holes. Each of the locking structure parts is arranged in the mounting hole and connected to the adapter ring.

8. The transmission device according to claim 7, characterized in that: The adapter ring includes a plurality of arc-shaped units, the plurality of arc-shaped units are distributed along the circumferential direction, and two adjacent arc-shaped units are detachably connected.

9. The transmission device according to claim 7, characterized in that: The friction fitting part includes one of a nylon block and a plastic block, and a drain hole is arranged on the adapter ring.

10. A wind turbine generator set, characterized in that: Comprising a transmission device as claimed in any one of claims 1 to 9.

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