A yawing slip ring

Abstract

The yaw current collecting ring comprises a rack, a rotating ring group rotatably connected to the rack, a fixed ring group arranged on the rack, the fixed ring group being sleeved on the outer circumferential surface of the rotating ring group, the fixed ring group being in sliding contact with the rotating ring group to electrically connect the rotating ring group and the fixed ring group, and a shielding structure sleeved on the outer circumferential surface of the rotating ring group and arranged on the side of the fixed ring group away from the ground. The technical scheme solves the technical problem of short service life of the existing yaw current collecting ring affected by the harsh environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a yaw current collector ring. BACKGROUND

[0002] With the continuous maturity of wind power technology and the continuous reduction of power generation cost, wind power has become one of the main sources of human consumption of electric energy. Wind power mainly relies on wind turbine generators to work under the action of wind to generate electric energy. Wind power is a kind of renewable energy which is currently more economical and easy to realize large-scale commercialization, and belongs to green and clean energy.

[0003] In the process of using wind power, when the wind direction deviates, the cable from the top of the tower to the bottom of the tower cannot be rigidly connected, and the conventional solution is to use a twisted cable connection, but the twisted cable has the defects of limited twisting angle, high cost and easy wear, and is gradually replaced by a current collector ring. The existing current collector ring can realize unlimited rotation of the wind turbine without the need to untie the cable.

[0004] However, since the current collector ring often works in a harsh open-air environment, it is easily corroded and aged due to factors such as high air humidity, strong wind and strong light, which affects its reliability and service life. SUMMARY

[0005] The main purpose of the present application is to provide a yaw current collector ring, which aims to solve the technical problem of short service life of the yaw current collector ring affected by the harsh environment.

[0006] To achieve the above purpose, the yaw current collector ring provided by the present application comprises:

[0007] a rack;

[0008] a rotating ring group rotatably connected to the rack;

[0009] a fixed ring group provided on the rack, the fixed ring group being sleeved on the outer periphery of the rotating ring group, the fixed ring group being in sliding contact with the rotating ring group to electrically connect the rotating ring group and the fixed ring group; and

[0010] a shielding structure sleeved on the outer periphery of the rotating ring group and provided on the side of the fixed ring group away from the ground.

[0011] Optionally, the rotating ring group comprises:

[0012] a central pipe rotatably connected to the rack;

[0013] a slip ring, which is an annular structure, the slip ring being sleeved on the outside of the central pipe and being spaced apart along the axial direction of the central pipe;

[0014] Each slip ring corresponds to a fixed ring group, and a shielding structure is provided between every two adjacent slip rings.

[0015] Optionally, the fixing ring assembly includes:

[0016] A brush holder is provided on the frame;

[0017] A brush is disposed on the brush holder and extends toward the slip ring to abut against the outer peripheral wall of the slip ring.

[0018] Optionally, the blocking structure includes:

[0019] The connecting part is sleeved on the central tube;

[0020] An annular portion is provided on the connecting portion and extends around the circumference of the connecting portion;

[0021] The connecting portion extends axially along the central tube and forms a clearance fit with the end face of the brush holder facing the slip ring. The outer diameter of the annular portion of each pair of adjacent shielding structures is different.

[0022] Optionally, the brush holder includes:

[0023] A sleeve is fitted onto the outside of the slip ring, and an installation hole is formed on the outer peripheral wall of the sleeve, into which the brush is embedded;

[0024] A pressure cap is detachably connected to the outer periphery of the sleeve to close or open the mounting hole;

[0025] A hanging ear is provided on the sleeve to connect the brush holder to the frame.

[0026] Optionally, a plurality of mounting holes are provided at intervals along the circumferential direction of the sleeve; and / or, a plurality of mounting holes are provided at intervals along the axial direction of the sleeve.

[0027] Optionally, the brush includes:

[0028] An elastic element is provided on the brush holder;

[0029] A brush head is disposed on the elastic member, which elastically abuts the brush head against the slip ring.

[0030] Optionally, the yaw collector ring includes a cover, which is disposed on the frame. The rotating ring assembly, the fixed ring assembly, and the shielding structure are disposed inside the cover, and the peripheral wall of the cover is provided with a plurality of heat dissipation holes.

[0031] Optionally, the rack includes:

[0032] Base plate;

[0033] A torsion bar is arranged on the base plate and extends away from the base plate;

[0034] A bearing seat is arranged at one end of the torsion bar away from the base plate, and the bearing seat is provided with a bearing hole;

[0035] The rotating ring set is rotatably connected to the bearing hole, and the fixed ring set is connected to the torsion bar.

[0036] Optionally, the rack includes a pull rod connected to the bearing seat and the base plate; and / or the torsion bar is provided with a plurality of rings around the rotating ring set; and / or the bearing seats are arranged at intervals along the extension direction of the torsion bar.

[0037] Compared with the prior art, in the technical solution, the yaw current collecting ring includes a rack, a rotating ring set is rotatably connected to the rack, and a fixed ring set is fixedly arranged on the rack, the fixed ring set is sleeved on the outer circumferential surface of the rotating ring set and in sliding contact with the outer circumferential surface of the rotating ring set. In actual use, the rotating ring set and the fixed ring set are respectively connected to two power transmission lines, and through the sliding contact between the rotating ring set and the fixed ring set, the electric signal can be transmitted between the rotating ring set and the fixed ring set, thereby realizing the transmission of the electric signal on the two power transmission lines. In addition, the yaw current collecting ring is also provided with a shielding structure, which is sleeved on the outer circumferential surface of the rotating ring set and located on the side of the fixed ring set away from the ground. The shielding structure can cover the rotating ring set and the fixed ring set below. In actual use, the uniform and close arrangement of the carbon brushes in the fixed ring set greatly increases the effective contact area of the brush head and the conductive ring, improves the power generation efficiency, and eliminates the tedious maintenance work. On the one hand, the shielding structure can block rainwater from falling into the rotating ring set and the fixed ring set below, ensuring the dryness of the two ring sets and reducing the possibility of corrosion due to moisture. On the other hand, there is a gap between the annular parts of every two adjacent shielding structures, which facilitates the falling of carbon brush powder and prevents the accumulation of too much carbon brush dust from causing the short circuit of the current collecting ring and fire. The shielding structure can also block sunlight from directly shining on the rotating ring set and the fixed ring set, preventing the temperature rise of the two ring sets due to exposure to sunlight, thereby delaying the aging of the two ring sets and improving the use reliability and service life of the yaw current collecting ring. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0039] Figure 1 Structure diagram of yaw slip ring embodiment of the present application;

[0040] Figure 2 Structure diagram of rotating ring group in yaw slip ring embodiment of the present application;

[0041] Figure 3 Partial sectional view diagram of yaw slip ring embodiment of the present application;

[0042] Figure 4 Structure diagram of fixed ring group in yaw slip ring embodiment of the present application;

[0043] Figure 5 Structure diagram of brush in yaw slip ring embodiment of the present application;

[0044] Figure 6 Structure diagram of cover in yaw slip ring embodiment of the present application;

[0045] Figure 7 Structure diagram of rack in yaw slip ring embodiment of the present application.

[0046] Brief Description of the Drawings:

[0047] Reference Name Reference Name 100 Frame 200 Rotating ring set 300 Fixed ring set 400 Shielding structure 500 Cover body 110 Bottom plate 120 Torsion bar 130 Bearing seat 140 Pull rod 210 Center tube 220 Slip ring 310 Brush holder 320 Electric brush 311 Sleeve 312 Pressing cover 313 Hanging ear 321 Elastic member 322 Brush head

[0048] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work under the premise that the specific working conditions are changed, fall within the protection scope of the present application.

[0050] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture is changed, the directionality indications will also be changed accordingly.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In addition, if the present application has a description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0053] The application of the wind power yawing current collecting ring perfectly solves the problems of cable winding and large resistance when the traditional wind turbine faces the wind, the wind turbine can rotate without restriction, thereby greatly prolonging the service life of the wind turbine, reducing the use of twisted cable and reducing the power generation cost, and the development of the main structure technology of the wind power current collecting ring greatly promotes the application of the wind power industry.

[0054] However, due to the harsh working environment of the current collecting ring, it is easily affected by internal heating and external humid environment, resulting in reduced working reliability and affecting the service life. In order to ensure the normal work of the current collecting ring, many kinds of wind power current collecting rings have heat dissipation systems and drying systems, etc. These complex protection systems reduce the reliability of the device operation and may be accompanied by current sharing problems.

[0055] In order to solve the above technical problems, the present application provides a yawing current collecting ring, which comprises:

[0056] A rack 100;

[0057] A rotating ring group 200 rotatably connected to the rack 100;

[0058] The fixed ring set 300 is arranged on the frame 100, is sleeved on the outer circumferential surface of the rotating ring set 200, and is in sliding contact with the rotating ring set 200 to electrically connect the rotating ring set 200 and the fixed ring set 300.

[0059] The shielding structure 400 is sleeved on the outer circumferential surface of the rotating ring set 200 and is arranged on the side of the fixed ring set 300 away from the ground.

[0060] Compared with the prior art, in the technical solution, the yaw current collecting ring comprises the frame 100, the rotating ring set 200 is rotatably connected to the frame 100, and the fixed ring set 300 is fixedly arranged on the frame 100 and sleeved on the outer circumferential surface of the rotating ring set 200. In actual use, the rotating ring set 200 and the fixed ring set 300 are respectively connected to two power transmission lines, and the electrical signal can be transmitted between the rotating ring set 200 and the fixed ring set 300 through the sliding contact between the rotating ring set 200 and the fixed ring set 300, so that the transmission of the electrical signal on the two power transmission lines is realized. In addition, the yaw current collecting ring is provided with the shielding structure 400, which is sleeved on the outer circumferential surface of the rotating ring set 200 and located on the side of the fixed ring set 300 away from the ground. The shielding structure 400 can cover the rotating ring set 200 and the fixed ring set 300 below. In actual use, the carbon brushes in the fixed ring set 300 are uniformly and closely arranged, which greatly increases the effective contact area of the brush head and the conductive ring, improves the power generation efficiency, and eliminates the tedious maintenance work. On the one hand, the shielding structure 400 can block rainwater from falling into the rotating ring set 200 and the fixed ring set 300 below, ensuring the dryness of the two ring sets and reducing the possibility of corrosion due to dampness. On the other hand, there is a gap between the annular parts of every two adjacent shielding structures 400, which facilitates the falling of carbon brush powder and prevents the accumulation of too much carbon brush dust from causing short circuit and fire of the current collecting ring. The shielding structure 400 can also block sunlight from directly shining on the rotating ring set 200 and the fixed ring set 300, preventing the temperature rise of the two ring sets due to exposure to the sun, thereby delaying the aging of the two ring sets and improving the use reliability and service life of the yaw current collecting ring.

[0061] Specifically, as Figures 1-7The yaw current collecting ring comprises a rack 100, which is fixed to a fan structure in actual application to carry other functional components; the rack 100 is provided with a rotating ring set 200 and a fixed ring set 300; the rotating ring set 200 is rotatably connected to the rack 100, which is arranged in a vertical direction and rotates along a rotation axis perpendicular to the ground in the embodiment; the fixed ring set 300 is fixedly connected to the rack 100 and is sleeved on the outer circumferential surface of the rotating ring set 200, and the fixed ring set 300 is in sliding contact with the outer circumferential surface of the rotating ring set 200; the structure of the sliding contact between the fixed ring set 300 and the rotating ring set 200 can be a conductive material such as copper or graphite to realize the electrical connection between the rotating ring set 200 and the fixed ring set 300; in actual use, the rotating ring set 200 and the fixed ring set 300 can be respectively connected to two cables, and the electrical connection between the two cables can be realized through the rotating ring set 200 and the fixed ring set 300 due to the electrical connection between the rotating ring set 200 and the fixed ring set 300; in addition, the stability of the electrical connection between the two cables can be ensured during the rotation of the rotating ring set 200 due to the contact between the rotating ring set 200 and the fixed ring set 300, and the rotation of the other cable will not be affected when one of the cables is twisted, so that the rotation of the two cables at any angle can be realized. In addition, in order to reduce the influence of the environment on the yaw current collecting ring, the yaw current collecting ring is also provided with a shielding structure 400, such as Figure 1 and Figure 3 the shielding structure 400 is sleeved on the outer circumferential surface of the rotating ring set 200 and is located on the side of the fixed ring set 300 away from the ground; in the embodiment, the shielding structure 400 can be an annular structure, such as Figure 3 the outer edge of the shielding structure 400 can be larger than the outer diameter of the fixed ring set 300, so that the connection area of the rotating ring set 200 and the fixed ring set 300 can be covered by the shielding structure 400. In actual application, when the yaw current collecting ring encounters rainy weather, the fixed ring set 300 is shielded by the shielding structure 400, and rainwater will drip to the top of the shielding structure 400, and the fixed ring set 300 and the rotating ring set 200 will not be wetted by rainwater, which ensures the dryness of the surfaces of the two ring sets, thereby delaying the corrosion of the rotating ring set 200 and the fixed ring set 300 caused by the humid environment, and prolonging the service life of the yaw current collecting ring; in addition, when the yaw current collecting ring encounters high-temperature exposure weather, the shielding structure 400 can block the direct sunlight on the rotating ring set 200 and the fixed ring set 300, which is conducive to reducing the surface temperature of the two ring sets, thereby improving the use reliability of the yaw current collecting ring.

[0062] Further, the rotating ring set 200 comprises:

[0063] a central pipe 210 rotatably connected to the rack 100;

[0064] The slip ring 220 is a ring structure component. The slip ring 220 is sleeved on the outside of the central tube 210, and multiple slip rings are arranged at intervals along the axial direction of the central tube 210.

[0065] Each slip ring 220 corresponds to a fixed ring group 300, and a shielding structure 400 is provided between every two adjacent slip rings 220.

[0066] Specifically, such as Figure 1 and Figure 2 In order to achieve synchronous transmission of multiple electrical signals, in this embodiment, the rotating ring assembly 200 includes a central tube 210, which can extend vertically and is rotatably connected to the frame 100. A slip ring 220 structure is provided on the central tube 210. The slip ring 220 is an annular structure and is sleeved on the central tube 210. Multiple slip rings 220 are spaced apart along the axial direction of the central tube 210. In order to achieve the transmission of electrical signals, the slip ring 220 can be made of conductive metals such as copper. By connecting multiple sets of cables to multiple slip rings 220 one by one, the synchronous transmission of multiple sets of electrical signals is achieved, and the transmission efficiency is improved. In addition, to facilitate the transmission of electrical signals, the rotating ring assembly 200 may be provided with conductive rods. The conductive rods may be located inside the slip ring 220 and extend upward in the vertical direction. Multiple conductive rods may be arranged at intervals along the circumference of the slip ring 220, with each conductive rod corresponding to each slip ring 220. The top of the conductive rod may be connected to a cable through a conductive terminal, so that the electrical signal of the cable may be transmitted to the slip ring 220 through the conductive rod. To improve the insulation performance between the slip rings 220 and ensure the stability of power transmission between them, the central tube 210 can be made of insulating material. In this embodiment, the central tube 210 is made of epoxy resin, and the central tube 210, the conductive rod, and the slip rings 220 can be integrally molded by injection molding. The conductive rod can be encased in the central tube 210, and the inner wall and side wall of the slip rings 220 can also be embedded in the outside of the central tube 210. This improves the insulation performance between the conductive rods and the insulation capability between the conductive rings, thereby ensuring the relative independence of the rotating ring assembly 200 for multi-channel electrical signal transmission and improving the reliability of the yaw collector ring. In addition, to facilitate the rotation of the rotating ring assembly 200, in this embodiment, the top of the rotating ring assembly 200 is also provided with a fork and a rocker arm. The fork can be a long strip structure that can be embedded in the top of the central tube 210 and extends horizontally. The rocker arm can be a U-shaped rod with its two ends connected to the two ends of the fork. The middle area of ​​the rocker arm can be connected to the drive mechanism through a buckle or the like. In this way, when the drive mechanism rotates, it can drive the fork to move through the rocker arm, and the fork can drive the central tube 210 to move, thereby realizing the rotation of the entire rotating ring assembly 200.

[0067] Furthermore, the fixed ring assembly 300 includes:

[0068] brush holder 310 is arranged on the frame 100;

[0069] the brush 320 is arranged on the brush holder 310 and extends towards the slip ring 220 to abut the outer circumferential wall of the slip ring 220.

[0070] Specifically, as Figure 3 and Figure 4 In order to ensure the stability of the connection between the fixed ring set 300 and the rotating ring set 200, in the embodiment, the fixed ring set 300 comprises a brush holder 310, which can be a ring-shaped structure, the brush holder 310 is fixedly connected to the frame 100 and is sleeved on the center tube 210 and is arranged opposite to the slip ring 220. The brush 320 is arranged on the brush holder 310, the brush 320 is arranged on the inner wall of the brush holder 310 facing the slip ring 220 and extends towards the slip ring 220 and abuts the outer circumferential wall of the slip ring 220. The brush 320 is made of conductive material such as copper or graphite, so that the power transmission between the rotating ring set 200 and the fixed ring set 300 can be realized through the connection between the brush 320 and the slip ring 220. In order to realize multi-path power transmission, a plurality of brush holders 310 can be sleeved on the center tube 210, and each brush holder 310 corresponds to each slip ring 220, and the multi-path power transmission is realized through the connection between the brush 320 on each brush holder 310 and each slip ring 220.

[0071] Further, the shielding structure 400 comprises:

[0072] a connecting portion, which is sleeved on the center tube 210,

[0073] a ring-shaped portion, which is arranged on the connecting portion and extends along the circumferential direction of the connecting portion;

[0074] The connecting portion extends along the axial direction of the center tube 210 and forms a gap fit with the end surface of the brush holder 310 facing the slip ring 220, and the outer diameters of the ring-shaped portions of every two adjacent shielding structures 400 are different. Specifically, as Figure 2In order to further improve the electrical insulation performance between the various transmission, in the embodiment, the shielding structure 400 comprises a connecting portion and a ring portion, wherein the connecting portion can be a cylindrical structure, the connecting portion is sleeved on the central pipe 210, the ring portion is an annular structure, the ring portion is arranged on the outer circumferential surface of the connecting portion and surrounds the circumference of the connecting portion, the connecting portion and the ring portion jointly form an umbrella-shaped structure, and a plurality of shielding structures 400 are arranged on the central pipe 210 in a spaced manner, and the plurality of shielding structures 400 and the plurality of slip rings 220 can be arranged in an alternating manner along the axial direction of the central pipe 210, so that each slip ring 220 can be shielded by the shielding structure 400 arranged above, thereby ensuring the protection effect of the shielding structure 400 on the slip ring 220 and the fixed ring set 300. On the other hand, the shielding structure 400 can further block the two adjacent slip rings 220, thereby increasing the creepage distance between the two adjacent slip rings 220, thereby improving the insulation performance. In addition, as shown in Figure 3 In the embodiment, the connecting portion can extend along the axial direction of the central pipe 210, and one end extends upward to a position close to the upper slip ring 220, at this time, the outer wall of the connecting portion and the inner wall of the brush holder 310 on the side facing the slip ring 220 form a gap fit, when the rotating ring set 200 rotates, due to the friction between the slip ring 220 and the brush 320, the surface of the slip ring 220 or the brush 320 will be worn and fall off conductive debris, the falling debris can be received by the outer wall of the connecting portion and guided to the outside away from the brush holder 310 through the ring portion and then discharged, that is, through the gap fit, the discharge of the conductive debris can be conveniently realized, thereby preventing the slip ring 220 between the slip ring 220 of the yaw current collector from being short-circuited, and improving the use reliability of the yaw current collector. In order to further improve the working reliability of the yaw current collector, the ring portions of adjacent shielding structures 400 can be provided with different outer diameters, in the embodiment, the ring portions of the shielding structures 400 have two outer diameter specifications, one large and one small, and the two types of shielding structures 400 are arranged in an alternating manner. In this way, the shielding structure 400 with a small size on the lower side can be shielded by the shielding structure 400 with a large size on the upper side, thereby reducing the amount of dirt attached to the surface, thereby reducing the occurrence of pollution flashover, in addition, in this way, the creepage distance between the two adjacent shielding structures 400 can be increased, thereby improving the insulation performance of the shielding structure 400.

[0075] Further, the brush holder 310 comprises:

[0076] The sleeve 311 is sleeved outside the slip ring 220, and the outer circumferential wall of the sleeve 311 is provided with a mounting hole, and the brush 320 is embedded in the mounting hole;

[0077] The gland 312 is detachably connected to the outer circumference of the sleeve 311 to close or open the mounting hole;

[0078] The hanging ear 313 is arranged on the sleeve 311 to connect the brush holder 310 and the frame 100.

[0079] Specifically, as Figure 4 In order to improve the connection strength between the brush holder 310 and the brush 320, in the embodiment, the brush holder 310 comprises a sleeve 311 which can be sleeved on the outside of the slip ring 220. The outer peripheral wall of the sleeve 311 is provided with a mounting hole. The brush 320 can be embedded in the mounting hole and extend to the outside of the inner wall of the sleeve 311 and abut against the slip ring 220. Thus, when the slip ring 220 rotates, the brush 320 is subjected to the circumferential friction force provided by the slip ring 220. At this time, the hole wall of the mounting hole can support the side wall of the brush 320, thereby improving the connection reliability between the brush holder 310 and the brush 320. In addition, the sleeve 311 is further provided with a gland 312 which can be arranged on the outer peripheral wall of the sleeve 311. The mounting hole can be closed by the gland 312, thereby preventing the brush 320 from falling out of the mounting hole. In addition, the gland 312 can also provide support to the brush 320 in the direction of the slip ring 220, thereby ensuring the stability of the connection between the brush 320 and the slip ring 220. In order to facilitate maintenance, the gland 312 and the sleeve 311 can be detachably connected. In the embodiment, the gland 312 is connected with the sleeve 311 by means of bolt connection. Thus, when maintenance is needed, the brush 320 can be conveniently taken out of the mounting hole after the gland 312 is removed, thereby improving the convenience of maintenance. In addition, in order to facilitate the connection between the brush holder 310 and the frame 100, the brush holder 310 further comprises a hanging ear 313 which can be arranged at the bottom of the sleeve 311 to provide support for the sleeve 311 from bottom to top. The hanging ear 313 extends away from the sleeve 311 and can be connected to the frame 100 by means of bolt connection, clamping or the like, thereby achieving the installation of the sleeve 311 on the frame 100. In addition, a plurality of hanging ears 313 can be arranged at intervals along the periphery of the sleeve 311, thereby enhancing the connection strength between the brush holder 310 and the frame 100.

[0080] Further, a plurality of mounting holes are arranged at intervals along the circumferential direction of the sleeve 311; and / or a plurality of mounting holes are arranged at intervals along the axial direction of the sleeve 311. In order to prolong the service life of the yaw collector ring, as Figure 4Multiple mounting holes can be spaced out along the circumference or axial direction of the sleeve 311. In this embodiment, multiple mounting holes are equally spaced along the circumference of the sleeve 311, and multiple layers are staggered along the axial direction of the sleeve 311. Each mounting hole corresponds to the installation of one brush 320. This arrangement increases the conductive area between the rotating ring assembly 200 and the fixed ring assembly 300. The current on the slip ring 220 can be distributed and transmitted through multiple brushes 320, thereby reducing the overcurrent of a single brush 320 and effectively reducing the heat generated by a single brush 320. This improves transmission performance and reduces the impact of heat on the lifespan of the brush 320, thus improving its operational reliability. In addition, since the brushes 320 are spaced apart, the heat inside the brushes 320 can also be dissipated through the gaps, which is beneficial for heat dissipation.

[0081] Furthermore, the brush 320 includes:

[0082] Elastic element 321 is provided on brush holder 310;

[0083] The brush head 322 is located on the elastic element 321, which elastically abuts the brush head 322 against the slip ring 220.

[0084] Specifically, to ensure the stability of the connection between the brush 320 and the slip ring 220, the brush 320 includes an elastic element 321 and a brush head 322. The elastic element 321 can be a common cylindrical compression spring, and the brush head 322 can be a cylindrical body made of conductive materials such as graphite. One end of the elastic element 321 can be connected to the brush holder 310, and the other end can be connected to the brush head 322, elastically abutting the brush head 322 against the slip ring 220. The elastic element 321 can buffer the brush head 322 when it is impacted, preventing damage and improving its reliability. Furthermore, when the brush head 322 wears, the elastic element 321 can restore its deformation to ensure constant contact between the brush head 322 and the slip ring 220, thereby improving the reliability of the connection between the brush head 322 and the slip ring 220, and also improving the operational reliability of the yaw collector ring.

[0085] Furthermore, the yaw collector ring includes a housing 500, which is mounted on the frame 100. A rotating ring assembly 200, a fixed ring assembly 300, and a shielding structure 400 are disposed within the housing 500. The housing 500 has several heat dissipation holes on its peripheral wall. Specifically, to further improve the operational reliability of the yaw collector ring, the yaw collector ring is further provided with a housing 500, such as... Figure 6The cover body 500 can be a box body matching the overall shape of other components of the yaw current collector ring. The cover body 500 can be arranged on the rack 100, and the rotating ring set 200, the fixed ring set 300 and the shielding structure 400 can be accommodated in the cover body 500. In this way, by arranging the cover body 500, the other components of the yaw current collector ring are isolated from the external environment, thereby improving the protection effect of the rotating ring set 200, the fixed ring set 300 and the shielding structure 400, and ensuring the working reliability of the yaw current collector ring. In addition, in order to improve the heat dissipation effect of the cover body 500, a plurality of heat dissipation holes can be arranged on the peripheral wall of the cover body 500. In this way, the heat generated by the internal components of the cover body 500 can be dissipated through the heat dissipation holes, thereby preventing the occurrence of temperature rise problems.

[0086] Further, the rack 100 comprises:

[0087] a bottom plate 110;

[0088] a torsion rod 120 arranged on the bottom plate 110 and extending away from the bottom plate 110;

[0089] a bearing seat 130 arranged at one end of the torsion rod 120 away from the bottom plate 110, the bearing seat 130 being provided with a bearing hole;

[0090] wherein the rotating ring set 200 is rotationally connected to the bearing hole, and the fixed ring set 300 is connected to the torsion rod 120.

[0091] Specifically, as Figure 7 In the embodiment, the rack 100 comprises a bottom plate 110, which can be a plate-shaped structural member. The torsion rod 120 is arranged on the bottom plate 110. The torsion rod 120 can be made of insulating material to ensure insulation effect. The torsion rod 120 can vertically extend upward in a direction perpendicular to the bottom plate 110. The fixed ring set 300 can be connected to the torsion rod 120 to be integrated with the rack 100. In addition, the bearing seat 130 is arranged at one end of the torsion rod 120 away from the bottom plate 110. The bearing seat 130 can extend in a horizontal direction. The bearing seat 130 is provided with a bearing hole extending in a vertical direction. The rotating ring set 200 can be arranged in the bearing hole and rotate in the bearing hole. In the technical solution, the rotating ring set 200 and the fixed ring set 300 are connected by the torsion rod 120, which can ensure the relative stability of the positions between the rotating ring set 200 and the fixed ring set 300, thereby improving the working reliability of the yaw current collector ring.

[0092] Further, the rack 100 comprises a pull rod 140 connecting the bearing seat 130 and the bottom plate 110; and / or the torsion rod 120 is provided with a plurality of the rotating ring set 200; and / or the bearing seat 130 is arranged in a plurality of intervals along the extension direction of the torsion rod 120.

[0093] Specifically, asFigure 7 In order to improve the supporting capacity of the frame 100, the frame 100 is further provided with pull rods 140, one end of each of which is connected to the bottom plate 110 and the other end of each of which is connected to the bearing seat 130. In the embodiment, two pull rods 140 are provided, both of which are connected to the area of the bearing seat 130 where the torsion bar 120 is connected, and the other ends of the two pull rods 140 are separately arranged on opposite sides of the torsion bar 120. In this way, through the oblique pulling of the two pull rods 140, the bearing seat 130 can be tightly abutted against the end of the torsion bar 120, so as to improve the connecting strength between the bearing seat 130 and the torsion bar 120. In addition, in order to reduce the stress of the torsion bar 120, the torsion bar 120 can be provided with multiple ones around the rotating ring set 200. In the embodiment, three torsion bars 120 are provided and are arranged at equal intervals along the circumferential direction of the rotating ring set 200. The three torsion bars 120 can be respectively connected to three areas of the bearing seat 130. Through the support of multiple positions of the bearing seat 130, on the one hand, the supporting effect on the rotating ring set 200 is improved, and on the other hand, the stress of a single torsion bar 120 is reduced, and the reliability thereof is improved. It can be conceived that, like the torsion bar 120, the fixed ring set 300 can also be arranged at the corresponding connecting portions of the three torsion bars 120 and be respectively connected to the three torsion bars 120, so as to also improve the connecting strength between the fixed ring set 300 and the torsion bar 120. In addition, in order to reduce the stress of the bearing seat 130, the bearing seat 130 can be arranged in multiple ones along the axial direction of the rotating ring set 200. The multiple bearing seats 130 can be matched with multiple areas in the axial direction of the rotating ring set 200, so as to improve the connecting strength between the rotating ring set 200 and the frame 100, reduce the local stress thereof, and ensure the reliability of the yaw current collector ring. Figure 4 In order to improve the supporting capacity of the frame 100, the frame 100 is further provided with pull rods 140, one end of each of which is connected to the bottom plate 110 and the other end of each of which is connected to the bearing seat 130. In the embodiment, two pull rods 140 are provided, both of which are connected to the area of the bearing seat 130 where the torsion bar 120 is connected, and the other ends of the two pull rods 140 are separately arranged on opposite sides of the torsion bar 120. In this way, through the oblique pulling of the two pull rods 140, the bearing seat 130 can be tightly abutted against the end of the torsion bar 120, so as to improve the connecting strength between the bearing seat 130 and the torsion bar 120. In addition, in order to reduce the stress of the torsion bar 120, the torsion bar 120 can be provided with multiple ones around the rotating ring set 200. In the embodiment, three torsion bars 120 are provided and are arranged at equal intervals along the circumferential direction of the rotating ring set 200. The three torsion bars 120 can be respectively connected to three areas of the bearing seat 130. Through the support of multiple positions of the bearing seat 130, on the one hand, the supporting effect on the rotating ring set 200 is improved, and on the other hand, the stress of a single torsion bar 120 is reduced, and the reliability thereof is improved. It can be conceived that, like the torsion bar 120, the fixed ring set 300 can also be arranged at the corresponding connecting portions of the three torsion bars 120 and be respectively connected to the three torsion bars 120, so as to also improve the connecting strength between the fixed ring set 300 and the torsion bar 120. In addition, in order to reduce the stress of the bearing seat 130, the bearing seat 130 can be arranged in multiple ones along the axial direction of the rotating ring set 200. The multiple bearing seats 130 can be matched with multiple areas in the axial direction of the rotating ring set 200, so as to improve the connecting strength between the rotating ring set 200 and the frame 100, reduce the local stress thereof, and ensure the reliability of the yaw current collector ring.

[0094] The above description is only optional embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the inventive concept of the present application and the contents of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. A yaw slip ring, characterized in that The yaw current collector comprises: a frame; a rotating ring set rotatably connected to the frame; a fixed ring set arranged on the frame, the fixed ring set being sleeved on the outer circumferential surface of the rotating ring set, the fixed ring set being in sliding contact with the rotating ring set to electrically connect the rotating ring set and the fixed ring set; and a shielding structure sleeved on the outer circumferential surface of the rotating ring set and arranged on the side of the fixed ring set away from the ground. The rotating ring set comprises a central pipe rotatably connected to the frame and a plurality of slip rings in the form of annular structures, the slip rings being sleeved on the outside of the central pipe and being arranged at intervals along the axial direction of the central pipe, wherein each slip ring corresponds to one fixed ring set, and one shielding structure is arranged between every two adjacent slip rings. The fixed ring set comprises a brush holder arranged on the frame, and the shielding structure comprises a connecting portion sleeved on the central pipe and an annular portion arranged on the connecting portion and extending in the circumferential direction of the connecting portion, wherein the connecting portion extends along the axial direction of the central pipe and is in clearance fit with the end surface of the brush holder facing the slip ring, and the outer diameters of the annular portions of every two adjacent shielding structures are different. The plurality of annular portions have first and second outer diameters, the first outer diameter being larger than the second outer diameter, and the annular portions with the first outer diameter and the annular portions with the second outer diameter being arranged alternately. The fixed ring set comprises:

2. The yawing slip ring of claim 1, wherein, an electric brush arranged on the brush holder and extending towards the slip ring to abut against the outer circumferential wall of the slip ring. The brush holder comprises:

3. The yawing slip ring of claim 2, wherein, a sleeve sleeved on the outside of the slip ring, the outer circumferential wall of the sleeve being provided with mounting holes, and the electric brush being embedded in the mounting holes; a gland detachably connected to the outer circumferential wall of the sleeve to close or open the mounting holes; and an ear arranged on the sleeve to connect the brush holder and the frame. The mounting holes are arranged at intervals in the circumferential direction of the sleeve and / or are arranged at intervals in the axial direction of the sleeve.

4. The yawing slip ring of claim 3, wherein, The electric brush comprises:

5. The yawing slip ring of claim 2, wherein, a resilient member arranged on the brush holder; and a brush head arranged on the resilient member, the resilient member elastically abutting the brush head against the slip ring. The yaw current collector comprises a cover arranged on the frame, the rotating ring set, the fixed ring set and the shielding structure being arranged in the cover, and the cover being provided with a plurality of heat dissipation holes in the peripheral wall.

6. The yawing slip ring of claim 1, wherein, The frame comprises:

7. The yawing slip ring of claim 1, wherein, a bottom plate; a torsion bar arranged on the bottom plate and extending away from the bottom plate; a bearing seat arranged on the end of the torsion bar away from the bottom plate, the bearing seat being provided with a bearing hole; wherein the rotating ring set is rotatably connected to the bearing hole, and the fixed ring set is connected to the torsion bar. The frame comprises a pull rod connecting the bearing seat and the bottom plate, and / or the torsion bar is provided with a plurality of torsion bars around the rotating ring set, and / or the bearing seats are arranged at intervals along the extension direction of the torsion bar.

8. The yawing slip ring of claim 7, wherein, ​

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