Brake locking device, transmission system and wind generating set

Abstract

The invention relates to a brake locking device, a transmission system and a wind generating set, the brake locking device comprises a supporting structure, the supporting structure comprises an end cover and a bearing part which are connected with each other, the end cover is arranged at the end of one side of a stator and connected with the stator, and the extension direction of the bearing part intersects with the extension direction of the end cover; the bearing part is cylindrical and is enclosed to form a connecting opening; the brake locking assembly comprises a brake structure and a locking structure, the brake structure comprises a brake base and a brake part which are detachably connected, the locking structure comprises a locking base and a locking part which are detachably connected, and the brake base and the locking base are both connected with the bearing part and are arranged at intervals in the circumferential direction of the bearing part; and the brake disc is connected with the rotor, and the brake disc can be connected and matched with the brake structure and the locking structure. According to the brake locking device, the cost can be reduced, and the structural strength and reliability can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a brake locking device, a transmission system and a wind power generator set. Background Art

[0002] In existing wind turbine generator sets, there are usually impellers, main shafts, gear boxes and generators connected in sequence. When the wind turbine generator needs to be maintained, or components need to be installed or removed, it is usually necessary to slow down the impeller and then lock it to prevent it from rotating during operation. In order to ensure sufficient support during braking and locking, the braking and locking structures are usually set at the low-speed end of the transmission system, and the mechanical structure of the low-speed end is used to bear the load when the unit is braked. However, the stress at the low-speed end is usually greater, and the required locking structure size is correspondingly larger, and the strength requirements are also higher, resulting in higher costs.

[0003] Therefore, there is an urgent need for a brake locking device that can be installed at the high-speed end and has reliable structural strength, as well as a corresponding transmission system and a wind turbine generator set. Summary of the invention

[0004] The embodiments of the present application provide a brake locking device, a transmission system and a wind turbine generator set. The brake locking device can improve strength and reduce cost.

[0005] In the first aspect, according to an embodiment of the present application, a brake locking device is proposed, which is applied to a generator. The generator includes a stator and a rotor. The brake locking device includes: a support structure, including an end cover and a bearing part that are connected to each other, the end cover is arranged at one side end of the stator and is connected to the stator, the extension direction of the bearing part intersects with the extension direction of the end cover, and the bearing part is cylindrical and encloses a connecting opening; a brake locking assembly, including a brake structure and a locking structure, the brake structure includes a detachably connected brake base and a brake member, the locking structure includes a detachably connected locking base and a locking member, the brake base and the locking base are both connected to the bearing part and arranged at intervals along the circumference of the bearing part; a brake disc, connected to the rotor, and the brake disc can be connected and cooperated with the brake structure and the locking structure.

[0006] According to one aspect of an embodiment of the present application, the brake locking assembly includes more than two locking structures, and a first reinforcement plate is connected between adjacent locking structures and / or between the locking structure and the brake structure. The first reinforcement plate is an arc-shaped plate-like member and is connected to the bearing portion.

[0007] According to one aspect of an embodiment of the present application, the brake locking assembly includes two locking structures, and the brake structure is arranged between the two locking structures.

[0008] According to one aspect of the embodiment of the present application, in the circumferential direction of the bearing portion, the distribution angle between the locking structure and the braking structure is α, and 45°≤α≤90°.

[0009] According to one aspect of the embodiment of the present application, in the circumferential direction of the bearing portion, the spacing between the locking structure and the braking structure is equal, and a first reinforcing plate is provided between the locking structure and the braking structure.

[0010] According to one aspect of the embodiment of the present application, the bearing portion is a cylinder, the plane where the first reinforcing plate is located is perpendicular to the axial direction of the bearing portion, and the radius of the edge of the first reinforcing plate away from the bearing portion is less than or equal to the radius of the bearing portion.

[0011] According to one aspect of an embodiment of the present application, at least one of the braking structure and the locking structure also includes a second reinforcement plate, which is arranged at both side ends of the braking base and / or both side ends of the locking base along the circumference of the bearing portion, and is connected between the braking base and / or the locking base and the bearing portion, and the plane where the second reinforcement plate is located extends along the radial direction of the bearing portion.

[0012] According to one aspect of the embodiment of the present application, the end cover is an annular plate-shaped member, and the orthographic projection of the end cover in the axial direction of the bearing portion is arranged around the connecting opening, and the brake locking assembly is arranged in the connecting opening.

[0013] According to one aspect of an embodiment of the present application, the locking member includes a locking hole and a locking pin extending axially along the bearing portion. In the axial direction of the bearing portion, the locking hole and the positive projection of the locking base are staggered with each other, and the locking pin is inserted into the locking hole.

[0014] In the second aspect, a transmission system is proposed according to an embodiment of the present application, comprising: the brake locking device of any embodiment of the first aspect; a generator, comprising a stator and a rotor arranged coaxially, the end cover being connected to one end of the stator on its own axial direction, the brake disc being connected to one end of the rotor close to the end cover, and along the axial direction of the rotor, the orthographic projection of the brake disc at least partially overlaps with the orthographic projection of the locking member and the orthographic projection of the brake member; a main shaft assembly, comprising a main drive shaft, and the main drive shaft is connected to one end of the rotor facing away from the brake locking device.

[0015] In a third aspect, according to an embodiment of the present application, a wind turbine generator set is proposed, comprising the transmission system in any embodiment of the second aspect.

[0016] The brake locking device provided in the embodiment of the present application includes a supporting structure, a brake locking assembly and a brake disc, wherein the supporting structure can be arranged at the high-speed end of the transmission system and is connected and fixed to the stator of the generator, and its supporting strength is reliable. At the same time, the brake locking assembly is integrated on the supporting structure. Through the integrated structural design, it can maintain a high structural strength when the stator is in a cantilever state, and the torque at the high-speed end is small, which can provide reliable braking and locking effects and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 is a structural schematic diagram of a brake locking device provided by an embodiment of the present application;

[0019] Figure 2 is a structural schematic diagram of a support structure and a brake locking assembly provided by an embodiment of the present application;

[0020] Figure 3 is a structural schematic diagram of a support structure and a brake locking assembly provided by another embodiment of the present application;

[0021] Figure 4 is a schematic diagram of the structure of a brake disc provided by an embodiment of the present application;

[0022] Figure 5 It is a schematic diagram of the structure of a wind turbine generator set provided in one embodiment of the present application.

[0023] in:

[0024] 100-brake locking device;

[0025] 10-support structure; 20-brake locking assembly; 30-brake disc;

[0026] 11-end cover; 12-bearing part; 21-braking structure; 22-locking structure; 23-first reinforcing plate; 24-second reinforcing plate;

[0027] 121-connection opening; 211-brake base; 212-brake member; 221-locking base; 222-locking member;

[0028] 2221-locking hole; 2222-locking pin. DETAILED DESCRIPTION

[0029] 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.

[0030] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structures in the molding mold and molding method of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the meaning of "multiple" is more than two, and 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; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0031] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In an existing wind turbine generator set, an impeller, a main shaft, a gear box and a generator are usually provided, which are connected to the transmission in sequence. When the wind turbine generator needs to be maintained, or components are installed or removed, it is usually necessary to slow down the impeller and then lock the impeller to prevent it from rotating during the operation. Since the high-speed end of the transmission system, such as the rear end of the generator, is usually in a cantilever state, it is easy to have stress overrun problems. Therefore, the existing brake locking device is usually set at the low-speed end of the transmission system.

[0033] On this basis, the applicant found that when decelerating and braking at the low-speed end, the stress at the low-speed end is usually greater, and the required locking structure size is correspondingly larger, and the strength requirement is also higher, resulting in higher costs. However, due to the space size in the cabin and other conditions, the transmission ratio of the gearbox in the wind turbine is usually small, and the torque cannot be reduced to a lower level at the high-speed end. Because the high-speed end is usually in a cantilever state, it is difficult to set brakes and locks at the high-speed end.

[0034] In order to solve the above problems, an embodiment of the present application proposes a brake locking device, in which a brake structure and a locking structure are integrated, and the device has low cost and good reliability.

[0035] It can be understood that the following embodiments of the present application only illustrate the application of the brake locking device in a wind turbine generator set as an example, but the brake locking device provided in the embodiments of the present application is not limited to the following embodiments, and can also be used in other occasions that require braking and locking under large loads, and to protect them.

[0036] In order to better understand this application, Figures 1 to 5 The tower measurement tooling provided in this application is described in detail.

[0037] Please also read Figures 1 to 4 , Figure 1 is a schematic diagram of the structure of a brake locking device provided by an embodiment of the present application, Figure 2 is a structural schematic diagram of a support structure and a brake locking assembly provided by an embodiment of the present application, Figure 3 is a structural schematic diagram of a support structure and a brake locking assembly provided by another embodiment of the present application, Figure 4 It is a schematic diagram of the structure of a brake disc provided in one embodiment of the present application.

[0038] In the first aspect, according to an embodiment of the present application, a brake locking device 100 is proposed, which is applied to a generator. The generator includes a stator and a rotor. The brake locking device 100 includes a support structure 10, a brake locking assembly 20 and a brake disc 30, wherein the support structure 10 includes an end cover 11 and a bearing portion 12 that are connected to each other, the end cover 11 is arranged at one side end of the stator and is connected to the stator, the extension direction of the bearing portion 12 intersects with the extension direction of the end cover 11, the bearing portion 12 is cylindrical and encloses a connecting opening 121; the brake locking assembly 20 includes a brake structure 21 and a locking structure 22, the brake structure 21 includes a detachably connected brake base 211 and a brake member 212, the locking structure 22 includes a detachably connected locking base 221 and a locking member 222, the brake base 211 and the locking base 221 are both connected to the bearing portion 12 and are arranged at intervals along the circumference of the bearing portion 12; the brake disc 30 is connected to the rotor, and the brake disc 30 can be connected and cooperated with the brake structure 21 and the locking structure 22.

[0039] The embodiment of the present application provides a brake locking device 100, which includes a support structure 10 connected to the stator of the generator and used to provide connection and support, a brake locking assembly 20 for performing braking and locking kinetic energy, and a brake disc 30 connected to the rotor.

[0040] Specifically, the support structure 10 includes an end cover 11 and a bearing portion 12 connected to each other, and the two can be welded, integrally formed, or detachably connected using fasteners such as bolts, and the present application does not make any specific restrictions on this. The end cover 11 can be a cover body located at one end of the generator in its own axial direction, and the cover body can be connected to the stator bracket and at least partially close the end of the generator. In order to be combined with the rotor, the stator bracket is usually a cantilever structure.

[0041] Furthermore, the bearing part 12 is a cylindrical structure, and the extension direction of the bearing part 12, that is, its own axial direction, can intersect with the plane where the end cover 11 is located, so that the axial direction of the bearing part 12 coincides with the axis of the generator, so as to cooperate with the rotating structure in the generator. The cylindrical bearing part 12 encloses a connecting opening 121, and according to the different positions of the rotor and the brake disc 30, the brake locking assembly 20 can be arranged on one side surface of the bearing part 12 facing the connecting opening 121, or on the other side (that is, the outer side) opposite thereto.

[0042] The brake lock assembly 20 includes a brake structure 21 and a lock structure 22 which are integrated and arranged on the aforementioned bearing part 12. These two structures are used to decelerate and position lock the brake disc 30 and the rotor of the generator, respectively. Specifically, the brake structure 21 includes a detachably connected brake base 211 and a brake member 212, wherein the brake base 211 is connected to the bearing part 12 and supported and fixed by the bearing part 12, and the brake member 212 can be provided with a friction deceleration structure to cooperate with the brake disc 30 and reduce its rotation speed by friction or the like, that is, at least part of the structure of the brake member 212 should be able to adapt to the brake disc 30.

[0043] Similar to the brake structure 21, the locking structure 22 includes a locking base 221 and a locking member 222 that are detachably connected to each other, wherein the locking base 221 is also supported and fixed by the bearing portion 12, and the locking member 222 extends from the locking base 221 and cooperates with the brake disc 30 to lock the relative position between the brake disc 30 and the supporting structure 10, thereby fixing the relative position between the rotor and the stator in the generator, so as to facilitate maintenance and other operations. The brake structure 21 and the locking structure 22 are arranged at intervals in the circumferential direction of the bearing portion 12 so that they can be connected and cooperated with different positions on the brake disc 30, and are convenient for bearing the force caused by the rotation of the rotor, thereby improving the reliability of the supporting structure 10.

[0044] The brake disc 30 is connected to the rotor of the generator. The brake disc 30 can be a circular plate-shaped member, and its edge is provided with a structure corresponding to the position of the brake member 212 and the locking member 222 and capable of cooperating with each other, such as a friction deceleration structure or a fixing hole.

[0045] The brake locking device 100 in the embodiment of the present application integrates the braking and locking functions in the same device, and can be arranged at the high-speed end where the torque to be borne is small, so it has high reliability and can reduce costs.

[0046] It can be understood that the brake locking device 100 in the embodiment of the present application is applied to the generator to slow down and lock the rotor, and the brake locking assembly 20 is arranged on the bearing part 12. Therefore, the bearing part 12 should be arranged relative to the rotor on the generator, that is, the position of the bearing part 12 is adjusted according to the position of the rotor. The generator can be a structure of an outer rotor and an inner stator, or a structure of an outer stator and an inner rotor. The present application does not make specific limitations on this. It is only necessary to adjust the shape and position of the bearing part 12 so that the brake locking assembly 20 arranged thereon can match the position and size of the rotor and the brake disc 30.

[0047] In some optional embodiments, the brake lock assembly 20 includes more than two locking structures 22, and a first reinforcement plate 23 is connected between adjacent locking structures 22 and / or between the locking structure 22 and the brake structure 21. The first reinforcement plate 23 is an arc-shaped plate-like member and is connected to the bearing portion 12.

[0048] The brake lock assembly 20 in the embodiment of the present application includes a brake structure 21 and a locking structure 22 arranged at intervals in the circumferential direction of the bearing portion 12. Furthermore, a plurality of locking structures 22 may be arranged at the same time to further improve the reliability of locking. Similarly, the brake lock assembly 20 may include one or more brake structures 21, and these brake structures 21 and locking structures 22 may be arranged alternately in the circumferential direction, or the same type of structures may be arranged adjacent to each other, and the present application does not make any specific limitation on this.

[0049] It is inevitable that there will be certain processing errors in the processing of existing mechanical structural components. Based on this, in an embodiment in which multiple locking structures 22 are provided in the brake locking device 100, due to errors in the connection and cooperation between the locking member 222 and the brake disc 30, the locking torque cannot usually be borne by multiple locking structures 22 at the same time. Instead, the locking torque will be applied entirely to the position of a locking member 222 that first forms abutment, causing problems such as overload of the locking structure and stress exceeding the load threshold.

[0050] On this basis, in order to improve the overall structural strength of the brake locking device 100, a first reinforcement plate 23 can be connected and arranged between adjacent locking structures 22 and / or the locking structure 22 and the brake structure 21. The first reinforcement plate 23 can be an arc-shaped plate-like member that is perpendicular to the axial direction of the load-bearing part 12, and the outer arc portion of its edge can be connected to the load-bearing part 12. At the same time, the two ends in the circumferential direction of the load-bearing part 12 can be respectively connected to the brake base 211 and the locking base 221 on both sides to form a reinforced support between the above-mentioned two bases to improve the structural strength.

[0051] like Figure 2As shown, in the embodiment where the brake lock assembly 20 includes multiple locking structures 22 at the same time, taking the clockwise rotation of the brake disc 30 as an example, the locking member 222 in a main locking structure 22 that is relatively forward in the rotation direction will first bear the locking torque. At this time, since the first reinforcing plate 23 connected to the locking structure 22 is squeezed in the rotation direction, the reinforcing plate will deform and compress and deform radially outward along the bearing portion 12, thereby enabling the auxiliary locking structure 22 located at the rear to approach the position of the main locking structure 22 through the deformation, so that the auxiliary locking structure 22 starts to bear the locking torque faster, so that the brake load caused by the rotation of the rotor is evenly released to the bearing portion 12, avoiding the problem of eccentric load or excessive local stress, and improving the overall structural strength and reliability of the brake lock device 100.

[0052] In some optional embodiments, the brake lock assembly 20 includes two locking structures 22 , and the brake structure 21 is disposed between the two locking structures 22 .

[0053] For example, the brake lock assembly 20 in the embodiment of the present application may include two locking structures 22 and a brake structure 21, and the orthographic projections of the three structures in the circumferential direction of the bearing portion 12 may overlap each other, so as to more reliably bear the applied force. At the same time, the two locking structures 22 may be symmetrically arranged on both sides of the brake structure 21, and supported by the brake structure 21 in the middle. On the basis of the locking structures 22 on both sides bearing torque at the same time through deformation as described above, the bearing strength can be further improved, thereby improving the overall structural strength of the brake lock device 100.

[0054] In some optional embodiments, in the circumferential direction of the bearing portion 12 , the distribution angle between the locking structure 22 and the braking structure 21 is α, and 45°≤α≤90°.

[0055] In the embodiment in which the two locking structures 22 are arranged on both sides of the braking structure 21, the distribution angles between the locking structure 22 and the braking structure 21 in the circumferential direction can be between 45° and 90°, that is, the three are simultaneously arranged within the range of 180°. The distribution angle refers to the angle between the radii corresponding to the two structures. Specifically, a first reference line is made through the center of the locking structure 22 and perpendicular to the axis of the bearing part 12, and a second reference line is made through the center of the braking structure 21 and perpendicular to the axis of the bearing part 12. Along the axial direction of the bearing part 12, the angle between the orthographic projection of the first reference line and the orthographic projection of the second reference line is recorded as α, and the size of the angle α is the distribution angle between the two structures.

[0056] Limiting α to 45° to 90° enables the brake base 211 and the locking base 221 to better bear the torque applied to them by the brake disc 30. If the angle α is too small, the two locking structures 22 will move in the same direction due to squeezing after the main locking structure 22 is locked, exacerbating the problems of eccentric load and stress overload; if the angle is too large, the locking member 222 in the auxiliary locking structure 22 cannot start bearing the torque in advance, resulting in the inability to release the load in time. Based on this, the size of the distribution angle α can be limited to 45° to 90° to ensure the strength after bearing and a good stress release effect.

[0057] In some optional embodiments, in the circumferential direction of the bearing portion 12 , the spacing between the locking structure 22 and the braking structure 21 is equal, and a first reinforcing plate 23 is disposed between the locking structure 22 and the braking structure 21 .

[0058] As mentioned above, the braking structure 21 and the locking structure 22 can be arranged in correspondence and alternatingly in the circumferential direction of the bearing portion 12, that is, the locking structure 22 sandwiches the braking structure 21 therebetween. At this time, the spacing between the locking structures 22 and the braking structures 21 on both sides can be equal, forming a structure that is symmetrical along the aforementioned second reference line, and a first reinforcing plate 23 with the same shape and size is simultaneously arranged on both sides of the braking structure 21, so that the overall force of the brake locking assembly 20 is uniform, ensuring that the locking structures 22 on both sides can simultaneously bear torque and release stress uniformly to the bearing portion 12.

[0059] In some optional embodiments, the bearing portion 12 is a cylinder, the plane where the first reinforcing plate 23 is located is perpendicular to the axial direction of the bearing portion 12 , and the radius of the edge of the first reinforcing plate 23 away from the bearing portion 12 is less than or equal to the radius of the bearing portion 12 .

[0060] The bearing part 12 in the embodiment of the present application may be a cylinder, so that it is easier to match the locking structure 22, the braking structure 21 and the rotating brake disc 30. In this case, the first reinforcing plate 23 may be an arc-shaped plate-like member extending along a plane. In order for the first reinforcing plate 23 to better provide support and increase the structural strength, the plane where the first reinforcing plate 23 is located may be perpendicular to the axial direction of the bearing part 12. In this case, the first reinforcing plate 23 can provide good support for the tangential load brought by the brake disc 30, thereby further improving the structural strength of the brake locking device 100 during the locking process.

[0061] In some optional embodiments, at least one of the braking structure 21 and the locking structure 22 further includes a second reinforcing plate 24. The second reinforcing plate 24 is arranged at both side ends of the braking base 211 and / or both side ends of the locking base 221 along the circumference of the bearing portion 12, and is connected between the braking base 211 and / or the locking base 221 and the bearing portion 12. The plane where the second reinforcing plate 24 is located extends along the radial direction of the bearing portion 12.

[0062] In order to further improve the structural strength of the brake structure 21 and the locking structure 22, another set of plate-shaped reinforcements, namely, a second reinforcement plate 24, can be provided in the brake lock assembly 20. The second reinforcement plate 24 can be provided at both ends of the brake base 211 and the locking base 221 in the circumferential direction of the bearing portion 12. The second reinforcement plate 24 can be a triangle or a trapezoid, etc., one side edge of which is connected to the bearing portion 12, and the other side edge which is perpendicular to the second side edge can be connected to the aforementioned end. In the embodiment in which the first reinforcement plate 23 is provided in the brake lock assembly 20, the plane where the second reinforcement plate 24 is located can be perpendicular to the plane where the first reinforcement plate 23 is located, so that the brake base 211 and the locking base 221 can be well supported in the circumferential direction and in the radial direction, thereby better bearing the load applied by the brake disc 30.

[0063] Optionally, the first reinforcing plate 23 and the second reinforcing plate 24 may have the same thickness and be made of the same material to reduce processing costs. At the same time, both reinforcing plates may be welded or integrally provided with the bearing portion 12 to ensure their supporting strength.

[0064] In some optional embodiments, the end cover 11 is an annular plate-shaped member, and the orthographic projection of the end cover 11 in the axial direction of the bearing portion 12 is arranged around the connecting opening 121 , and the brake locking assembly 20 is arranged in the connecting opening 121 .

[0065] As mentioned above, the brake locking device 100 in the embodiment of the present application can be applicable to a generator with an outer rotor and an inner stator or a generator with an outer stator and an inner rotor. In order to facilitate the connection and coordination between the rotor and components such as the gear box in the main shaft system, the generator in the unit can usually adopt an outer stator and inner rotor structure. In this case, the end cover 11 can be an annular plate-like member with a center hole formed at the center position. The bearing portion 12 is connected to one side surface of the end cover 11 in the axial direction, and can be connected vertically to each other.

[0066] Furthermore, at this time, the orthographic projection of the bearing portion 12 on the end cover 11 can enclose the aforementioned center hole, that is, the orthographic projection of the end cover 11 in the axial direction of the bearing portion 12 should at least partially surround the aforementioned connecting opening 121, and the brake locking assembly 20 can also be correspondingly arranged in the connecting opening 121, thereby facilitating the brake locking assembly 20 to decelerate or brake the rotor while the end cover 11 and the stator of the generator are interconnected.

[0067] In some optional embodiments, the locking member 222 includes a locking hole 2221 and a locking pin 2222 extending axially along the load-bearing portion 12. In the axial direction of the load-bearing portion 12, the locking hole 2221 and the positive projection of the locking base 221 are staggered with each other, and the locking pin 2222 is inserted into the locking hole 2221.

[0068] The locking structure 22 in the embodiment of the present application is used to form a locking connection between the bearing portion 12 and the brake disc 30, that is, to lock the relative position between the brake disc 30 and the supporting structure 10. On this basis, the locking member 222 can achieve the locking function in the form of a hole-pin fit.

[0069] Specifically, the locking member 222 may include a locking hole 2221 and a locking pin 2222 that cooperate with each other. Along the axial direction of the bearing portion 12, the orthographic projection of the locking hole 2221 should be staggered with the orthographic projection of the locking base 221, but overlap with the orthographic projection of the brake disc 30, and the brake disc 30 should be provided with a fixing hole corresponding to the overlapping position of the projection. When the locking structure 22 is used, when the speed of the brake disc 30 drops to a certain threshold, the locking pin 2222 can be inserted into the locking hole 2221 when it is directly opposite to the aforementioned fixing hole, so that it passes through the aforementioned two holes at the same time, so as to achieve the purpose of locking in the circumferential direction.

[0070] It can be understood that the dimensional parameters such as the diameter and length of the locking hole 2221 and the locking pin 2222 can be designed according to parameters such as the structural strength required for locking. For example, the locking pin 2222 can be a cylindrical pin, a conical pin, etc., and the present application does not make any specific limitations on this.

[0071] In the second aspect, according to an embodiment of the present application, a transmission system is proposed, comprising the brake locking device 100 in any embodiment of the first aspect and a generator, wherein the generator comprises a stator and a rotor arranged coaxially, the end cover 11 is connected to one end of the stator in its own axial direction, the brake disc 30 is connected to one end of the rotor close to the end cover 11, and along the axial direction of the rotor, the orthographic projection of the brake disc 30 at least partially overlaps with the orthographic projection of the locking member 222 and the orthographic projection of the brake member 212; a main shaft assembly comprises a main drive shaft, and the main drive shaft is connected to the end of the rotor facing away from the brake locking device.

[0072] As mentioned above, the brake locking device 100 in the embodiment of the present application is arranged at the high-speed end of the main shaft transmission system of the wind turbine generator set, that is, the end of the generator away from the main shaft system, wherein the end cover 11 can be used as the end cover of the generator stator, the brake locking assembly 20 is arranged thereon, and the brake disc 30 is connected to the generator rotor, and the brake locking assembly 20 applies force to the brake disc 30 to brake and lock the transmission system as a whole. In order to ensure strength and facilitate maintenance, the brake disc 30 and the rotor can be detachably connected by a connector composed of bolts and nuts.

[0073] On this basis, it should be ensured that the brake member 212 and the locking member 222 in the brake lock assembly 20 can form a connection and cooperation with the brake disc 30, that is, along the axial direction of the generator, the orthographic projections of the brake member 212 and the locking member 222 should at least partially overlap with the orthographic projections of the brake disc 30, so as to form a connection and cooperation in the area corresponding to the overlapping part. Specifically, the brake member 212 can be a structure that decelerates the brake disc 30 through friction, and the locking member 222 can be a bolt, a stud, a fixing pin, etc., and this application does not make any specific limitation on this.

[0074] See also Figure 5 , Figure 5 The third aspect is a wind turbine generator set 200 provided in accordance with an embodiment of the present application, comprising a transmission system in any embodiment of the second aspect.

[0075] The transmission system and wind turbine generator set 200 provided in the embodiment of the present application have all the beneficial effects of the brake locking device 100 provided in the embodiment of the present application. For details, please refer to the specific description of the brake locking device 100 in the above embodiments, which will not be repeated in this embodiment.

[0076] 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 brake locking device, applied to a generator, the generator comprising a stator and a rotor, characterized in that: The brake locking device comprises: A supporting structure, comprising an end cover and a bearing portion connected to each other, wherein the end cover is disposed at one end of the stator and connected to the stator, an extension direction of the bearing portion intersects with an extension direction of the end cover, and the bearing portion is cylindrical and encloses a connection opening; A brake locking assembly, comprising a brake structure and a locking structure, wherein the brake structure comprises a detachably connected brake base and a brake member, and the locking structure comprises a detachably connected locking base and a locking member, wherein the brake base and the locking base are both connected to the bearing portion and arranged at intervals along the circumference of the bearing portion; A brake disc is connected to the rotor, and the brake disc can be connected and matched with the braking structure and the locking structure.

2. The brake locking device according to claim 1, characterized in that: The brake lock assembly includes more than two locking structures, and a first reinforcement plate is connected between adjacent locking structures and / or between the locking structure and the brake structure. The first reinforcement plate is an arc-shaped plate-like member and is connected to the bearing part.

3. The brake locking device according to claim 2, characterized in that: The brake lock assembly comprises two locking structures, and the brake structure is arranged between the two locking structures.

4. The brake locking device according to claim 3, characterized in that: In the circumferential direction of the bearing portion, a distribution angle between the locking structure and the braking structure is α, and 45°≤α≤90°.

5. The brake locking device according to claim 3, characterized in that: In the circumferential direction of the bearing portion, the spacing between the locking structure and the braking structure is equal, and a first reinforcing plate is disposed between the locking structure and the braking structure.

6. The brake locking device according to claim 5, characterized in that: The bearing portion is a cylinder, the plane where the first reinforcing plate is located is perpendicular to the axial direction of the bearing portion, and the radius of an edge of the first reinforcing plate away from the bearing portion is less than or equal to the radius of the bearing portion.

7. The brake locking device according to claim 1, characterized in that: At least one of the braking structure and the locking structure also includes a second reinforcement plate, which is arranged on both side ends of the braking base and / or both side ends of the locking base along the circumference of the bearing portion, and is connected between the braking base and / or the locking base and the bearing portion, and the plane where the second reinforcement plate is located extends along the radial direction of the bearing portion.

8. The brake locking device according to claim 1, characterized in that: The end cover is an annular plate-shaped member, and the orthographic projection of the end cover in the axial direction of the bearing portion is arranged around the connecting opening, and the brake locking assembly is arranged in the connecting opening.

9. The brake locking device according to claim 1, characterized in that: The locking member comprises a locking hole and a locking pin extending along the axial direction of the bearing portion. In the axial direction of the bearing portion, the locking hole and the positive projection of the locking base are staggered with each other, and the locking pin is inserted into the locking hole.

10. A transmission system, characterized in that: include: The brake locking device according to any one of claims 1 to 9; The generator comprises a coaxially arranged stator and rotor, the end cover is connected to one end of the stator in its own axial direction, the brake disc is connected to one end of the rotor close to the end cover, and along the axial direction of the rotor, the orthographic projection of the brake disc at least partially overlaps with the orthographic projection of the locking member and the orthographic projection of the brake member; The main shaft assembly comprises a main transmission shaft, wherein the main transmission shaft is connected to an end of the rotor away from the brake locking device.

11. A wind turbine generator set, characterized in that: Comprising the transmission system as claimed in claim 10.

Images