A modular rotary transmission device and its power transmission method

Abstract

The present invention relates to a modular rotary transmission device and its power transmission method, belonging to the technical field of power supply equipment, and solves the problems in the prior art that the power transmission device can only achieve a single type of power transmission, and the assembly and maintenance of the product are complex. The modular rotary transmission device of the present invention includes: a power module, a power core shaft and an outer cover; the power core shaft is arranged inside the outer cover and can rotate relative to the outer cover; the power module is installed on the outer cover; there is one group or multiple groups of power modules; each group of power modules includes one group or multiple groups of power brush assemblies; the power brush assemblies are connected by connecting pieces, and a power ring is fixedly installed outside the power core shaft; when the power core shaft rotates relative to the outer cover, the brush wires of the power brush assemblies are in sliding contact with the power ring and can achieve electrical connection. The present invention realizes the modular adjustment and rotary transmission of the transmitted power.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply equipment, and particularly to a modular rotary transmission device and a power transmission method thereof. Background Art

[0002] At present, most power slip rings on the market use a superposition into an integral type for current transmission. Designed according to the magnitude of the transmitted current, they can only achieve power transmission in a fixed mode.

[0003] When manufacturing power supply equipment of different specifications, there are practical problems such as a large variety of required parts, a long production cycle from design to manufacturing of the power slip ring, and high production and manufacturing costs.

[0004] For high-power transmission equipment, it is generally centrally installed. Once the product needs to be repaired, the disassembly and assembly workload is large, and it also causes damage to the components themselves. Summary of the Invention

[0005] In view of the above analysis, the present invention aims to provide a modular rotary transmission device and a power transmission method thereof to solve the problems that existing power transmission equipment can only achieve a single type of power transmission and the assembly and maintenance of products are complex.

[0006] The object of the present invention is mainly achieved through the following technical solutions:

[0007] A modular rotary transmission device includes: a power module, a power core shaft, and an outer cover; the power core shaft is arranged inside the outer cover and can rotate relative to the outer cover;

[0008] The power module is installed on the outer cover; there is one group or multiple groups of the power modules; a power ring is fixedly installed outside the power core shaft; the contact member of the power module is in sliding contact with the power ring and can achieve electrical connection.

[0009] Further, the power module includes one group or multiple groups of power brush assemblies.

[0010] Further, when the power module includes multiple groups of power brush assemblies, adjacent power brush assemblies are connected by a connecting piece.

[0011] Further, there are multiple power rings, and the multiple power rings are sleeved outside the power core shaft side by side and are independent of each other; an insulating ring is arranged between adjacent power rings.

[0012] Further, an insulating strip is arranged between the power ring and the power core shaft; the power ring is electrically connected to a second cable.

[0013] Further, the contact member is a brush wire made of metal.

[0014] Furthermore, the outer cover comprises: a fixing ring and support rods; there are at least two support rods, which are fixedly installed perpendicular to the fixing ring; and the plurality of support rods are evenly distributed in the circumferential direction of the fixing ring.

[0015] Furthermore, the fixing ring is an annular structure, the power core shaft is coaxial with the fixing ring, and the power core shaft is rotatably mounted on the fixing ring via a bearing.

[0016] Furthermore, the power brush assembly includes: brush wires, a metal tube and a first cable.

[0017] Furthermore, there are multiple brush filaments, and the brush filaments are gathered in the metal tube.

[0018] Furthermore, the power brush assembly further comprises a positioning plate, and the positioning plate is fixedly mounted on the support rod;

[0019] Furthermore, the metal tube is fixedly mounted on the positioning plate, and passes through the positioning plate to be connected with the first cable or the connecting piece.

[0020] A power transmission method of a modular rotary transmission device comprises the following steps:

[0021] Step S1: determining the current carrying base of the power ring; determining the power supply current of the modular rotary transmission device;

[0022] Step S2: determining the number of power rings according to the current-carrying base of the power rings and the power supply current of the modular rotary transmission device; determining the number of power modules and the number of groups of power brush assemblies included in each group of power modules;

[0023] Step S3: After the modular rotary transmission device is assembled, after power is turned on, the power ring rotates relative to the power brush assembly; the brush filaments slide on the surface of the power ring to achieve rotary transmission.

[0024] The technical solution of the present invention can achieve at least one of the following effects:

[0025] 1. The modular rotary transmission device of the present invention is easy to install, low in cost, and can be modularly assembled and installed. It can combine different transmission requirements according to different usage requirements, and can achieve a combination of multiple different powers and different carrying currents, and can meet different power supply requirements of the market. The power brush module is easy to assemble and quick to install.

[0026] 2. The modular rotary transmission device of the present invention has a power modular design that effectively reduces design costs and improves design efficiency; the product is modular, interchangeable, and easy to maintain; power modularization is conducive to improving product standardization, improving product quality and reliability; the power brush bundle has a simple structure and is easy to assemble.

[0027] 3. The modular rotary transmission device of the present invention adopts a modular combined installation method. Only by increasing or decreasing the number of power rings and power brush assemblies can the adjustment of the carrying power be achieved. And by setting connecting pieces to combine multiple groups of power brush assemblies, the maximum carrying current of the rotary transmission device can be adjusted. The power brush module is convenient to assemble and install quickly, effectively reducing the damage degree of components during disassembly, assembly and maintenance, and greatly extending the product life.

[0028] 4. For the modular rotary transmission device of the present invention, on the premise that the number of power rings and power brush assemblies and the carrying current are determined, by adjusting the connecting pieces to combine different numbers of power brush assemblies, different types of power modules can be obtained, and then the adjustment of the maximum carrying current of the power module can be realized. The adjustment process does not require the overall disassembly and assembly of the transmission device. Only by changing the type of the connecting piece and the connection method of the connecting piece, that is, the number of connecting pieces combining the power brush assemblies, can the adjustment of the carrying current be realized.

[0029] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent description. And some advantages can be made obvious from the description, or understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the content specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are only for the purpose of showing specific embodiments, and are not considered as a limitation to the present invention. Throughout the drawings, the same reference signs represent the same components.

[0031] Figure 1 is a schematic structural diagram of the modular rotary transmission device of the present invention;

[0032] Figure 2 is a semi-sectional view of the modular rotary transmission device of the present invention;

[0033] Figure 3 is a transverse sectional view of the modular rotary transmission device of the present invention;

[0034] Figure 4 is a schematic structural diagram of the power brush assembly of the modular rotary transmission device of the present invention;

[0035] Figure 5 is a schematic structural diagram of the connecting piece unit;

[0036] Figure 6 is a connecting piece capable of connecting two groups of power brush assemblies;

[0037] Figure 7A connecting piece capable of connecting three groups of power brush components.

[0038] Reference numerals:

[0039] 1 - fixing ring; 2 - bearing; 3 - power retaining ring; 4 - connecting piece; 5 - power brush component; 6 - power ring; 7 - insulating ring; 8 - insulating strip; 9 - power mandrel; 10 - support rod

[0040] 41 - connecting piece unit; 401 - threaded post; 402 - connecting screw hole; 403 - flat plate part; 404 - tin storage hole

[0041] 51 - positioning plate; 52 - brush wire; 53 - metal tube; 531 - tin adding hole; 54 - first cable Detailed implementation mode

[0042] The preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. The accompanying drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0043] Embodiment 1

[0044] A specific embodiment of the present invention discloses a modular rotary transmission device, as Figure 1-4 shown, including: a power module, a power mandrel 9 and an outer cover; the power mandrel 9 is arranged inside the outer cover and can rotate relative to the outer cover;

[0045] The power module is installed on the outer cover; there is one or more groups of the power modules; each group of the power modules includes one or more groups of power brush components 5;

[0046] A power ring 6 is fixedly installed outside the power mandrel 9; the contact member of the power brush component 5 is in sliding contact with the power ring 6 and can realize electrical connection.

[0047] In a specific implementation manner of the present invention, the power module includes: a connecting piece 4, a power ring 6 and a power brush component 5.

[0048] Specifically, each group of power modules includes one or more power units. Each power unit includes: a power ring 6 and a group of power brush components 5. Adjacent power units are connected by a connecting piece 4 to achieve superposition of the carried current, as Figure 1 shown.

[0049] Exemplarily, when the power module includes 3 power units: there are 3 power rings 6, and the 3 power rings are longitudinally sleeved on the power mandrel 9; there are three groups of power brush components 5, and each group of power brush components 5 corresponds to a power ring 6. The power brush components 5 are arranged on the periphery of the power ring 6 and are in contact through the contact members.

[0050] Further, there are multiple power rings 6, and the multiple power rings 6 are sleeved outside the power mandrel 9 in parallel and are independent of each other; an insulating ring 7 is arranged between adjacent power rings 6. An insulating strip 8 is arranged between the power ring 6 and the power mandrel 9; as Figure 2 shown. By arranging the insulating ring 7 and the insulating strip 8, the isolation of different power rings 6 is realized, ensuring that each power ring 6 can be independently transported.

[0051] Further, as Figure 3 shown, each group of power brush assemblies 5 corresponds to one power ring 6.

[0052] In a specific embodiment of the present invention, as Figure 3 shown, four power brush assemblies 5 are in a group.

[0053] Specifically, four power brush assemblies 5 are correspondingly arranged for each power ring 6. Or rather, four power brush assemblies 5 are in surface contact with the same power ring 6. When the power ring 6 rotates, the brush wires 52 of the power brush assemblies 5 are in sliding contact with the power ring 6, realizing the rotational transmission of electricity.

[0054] Exemplarily, as Figure 2 shown, the selected transmission device has 5 power rings 6, and there are two groups of power modules. Among them, the first group of power modules includes two groups of power brush assemblies 5, and the two groups of power brush assemblies 5 correspond to the upper two power rings 6; the second group of power modules includes three groups of power brush assemblies 5, and the three groups of power brush assemblies 5 correspond to the lower three power rings 6.

[0055] Further, when the power module includes multiple groups of power brush assemblies 5, adjacent power brush assemblies 5 are connected by a connecting piece 4. Specifically, adjacent power brush assemblies 5 are connected by a connecting piece 4 to realize the superposition of transmitted currents, and finally soldered, which can increase the current-carrying capacity of the transmission channel.

[0056] In a specific embodiment of the present invention, the outer cover includes: a fixing ring 1 and a support rod 10; there are at least two support rods 10, and they are fixedly installed perpendicular to the fixing ring 1; multiple support rods 10 are evenly distributed in the circumferential direction of the fixing ring 1. Further, the fixing ring 1 is of an annular structure, the power mandrel 9 is coaxial with the fixing ring 1, and the power mandrel 9 is rotatably installed on the fixing ring 1 through a bearing 2. When the power mandrel 9 rotates relative to the support rod 10, the power brush assembly 5 rotates relative to the power ring 6, and the contact member slides and rotates relative to the power ring 6.

[0057] In a specific embodiment of the present invention, the power brush assembly 5 includes: a positioning plate 51, brush wires 52, a metal tube 53, and a first cable 54.

[0058] The positioning plate 51 is fixedly mounted on the support rod 10 ; there are a plurality of brush filaments 52 , and the brush filaments 52 are gathered in the metal tube 53 .

[0059] Specifically, the positioning plate 51 is fixedly connected to the support rod 10 by bolts. Figure 3 shown.

[0060] Specifically, the metal tube 53 passes through the positioning plate 51 and is fixedly connected to the positioning plate 51; preferably, the positioning plates 51 are arranged on both sides of the power ring 6 and are parallel to the tangent direction of the power ring 6, and the metal tube 53 is perpendicular to the tangent direction of the power ring 6. Preferably, the positioning plate 51 is made of insulating material; the material of the metal tube 53 is copper.

[0061] Furthermore, the contact member is a brush 52 made of metal. The brush 52 is in close contact with the outer surface of the power ring 6, and the power ring 6 still maintains sliding contact with the brush 52 when rotating; the brush 52 is made of hard metal, such as steel wire or iron wire.

[0062] Furthermore, the metal tube 53 passes through the positioning plate 51, and the two ends are respectively connected to the brush wire 52 and the first cable 54. Specifically, the brush wire 52 and the first cable 54 are respectively crimped on the two ends of the metal tube 53; the brush wire 52 is electrically connected to the first cable 54 through the metal tube 53, and the power ring 6 is electrically connected to the second cable to realize the rotation transmission of electric power.

[0063] In a specific embodiment of the present invention, Figure 3 As shown, a tinning hole 531 is provided on the metal tube 53 , and metal tin is filled in the tinning hole 531 . The metal tube 53 and the first cable 54 are reinforced by adding solder through the tinning hole 531 .

[0064] In a specific embodiment of the present invention, the positioning plate 51 is mounted on the support rod 10 and can be installed as needed. The lateral installation reduces damage to the surface of the power ring 6. At the same time, the installation of modules can be reduced to achieve low-power transmission. It has strong versatility and a high degree of interchangeability, realizes modular combination and deployment, effectively integrates resources, and reduces costs.

[0065] In a specific embodiment of the present invention, the support rod 10 has a threaded hole inside, and the power brush assembly 5 can be installed through the threaded hole on the support rod 10. The threaded hole is fixed to the slot in the positioning plate 51 by screws. The support rod 10 is made of stainless steel, aluminum alloy, polymer material and the like under the condition of meeting the strength requirement, and the length of the support rod 10 can be determined according to the number of superimposed power rings 6.

[0066] Further, a plurality of parallel mounting holes are provided on the positioning plate 51, and screws are installed in the mounting holes of the positioning plate 51 to be fixedly connected to the support rod 10. By adjusting the cooperation between different mounting holes and the threaded holes on the support rod 10, the relative position of the positioning plate 51 and the support rod 10 in the horizontal direction (radial direction of the power ring 6) can be adjusted, so that the positioning plate 51 can be horizontally displaced relative to the support rod 10, and further the brush wire 52 can be moved relative to the radial direction of the power ring 6, thereby adjusting the contact pressure between the brush wire 52 and the power ring 6, improving the contact reliability between the brush wire 52 and the power ring 6, and ensuring that the transmission device has a good transmission effect.

[0067] Further, each power unit can set different current-carrying bases for the power ring 6 according to the wall thickness and width of the power ring 6.

[0068] Exemplarily, one power ring 6 can be set to carry currents of nA, where n = 10A, 50A, 100A..., etc.

[0069] Further, by increasing the ring channels of the power ring 6, that is, the current load can be increased. That is to say, by stacking the number of power rings 6, the current load of the power module can be increased.

[0070] Exemplarily, with the current-carrying capacity of each power ring 6 being 100A, the rotary transmission device can arrange N power rings 6 according to the usage needs, where N = 5, 10, 20, 30,..., and each power module serves as a transmission channel. The rotary transmission device can correspondingly arrange a variety of combination methods according to the number and types of transmission channels.

[0071] Such as Figure 1 、 Figure 2 As shown, taking the number of power rings 6, N = 5, as an example, according to different stacking methods, up to M transmission channels can be combined, where M ≤ N. Or rather, when the number of power rings 6 is N, the number of power modules is M groups, where M ≤ N; each group of power modules has a number of power rings 6 greater than or equal to 1, and 7 combination methods can be combined.

[0072] For example, when five power rings 6 are stacked together, they can transmit a power of ≤500A, and when each power ring 6 is independent, each transmission channel can transmit a current of ≤100A.

[0073] Further, the structure of the rotary transmission device of the present invention adopts a symmetrical structure. The fixing rings 1 at the upper and lower ends are the same kind of parts, with strong interchangeability. The power brush assembly 5 is modularly designed, and the arrangement method of the power brush assembly 5 can be arbitrarily changed according to needs, thereby realizing the adjustment of the transmission power.

[0074] The outer surface of the power mandrel 9 is circumferentially provided with a plurality of insulating grooves, the insulating grooves extend along the axial direction of the power mandrel 9, and insulating strips 8 are installed in the insulating grooves.

[0075] Furthermore, a power retaining ring 3 is sleeved on the uppermost part of the power mandrel 9, and the power retaining ring 3 is used to press a plurality of power rings 6 and insulating rings 7.

[0076] Furthermore, in order to facilitate the combination of multiple groups of power brush assemblies 5, the connecting piece 4 is set as a modular structure.

[0077] In a specific embodiment of the present invention, the connecting piece 4 is modularly assembled by a plurality of connecting piece units 41.

[0078] Specifically, as Figure 5 shown, the connecting piece unit 41 includes: a threaded post 401, a connecting screw hole 402 and a flat plate portion 403. Among them, the threaded post 401 and the connecting screw hole 402 are respectively arranged at both ends of the connecting piece unit 41, and the threaded post 401 of one connecting piece unit 41 can be screwed into the connecting screw hole 402 of another connecting piece unit 41 to realize the connection of multiple connecting piece units 41.

[0079] Furthermore, the flat plate portion 403 is used to connect with the positioning plate 51 of the power brush assembly 5.

[0080] Furthermore, a plurality of tin storage holes 404 are arranged on the flat plate portion 403, metal tin is used to be injected into the tin storage holes 404, the plurality of tin storage holes 404 correspond to the metal tubes 53 on the power brush assembly 5, and the flat plate portion 403 and the metal tube 53 are connected by soldering.

[0081] Preferably, the tin storage holes 404 are tapered holes. Metal tin is put in from the large end of the tapered hole. During soldering, the metal tin melts and flows out from the small end of the tapered hole to adhere to the metal tube 53, and the flat plate portion 403 and the metal tube 53 are soldered and connected to realize circuit connection.

[0082] As Figure 6 shown, when it is necessary to connect two groups of power brush assemblies 5 with the connecting piece 4, the two connecting piece units 41 are connected through the threaded post 401 and the connecting screw hole 402, and the flat plate portions 403 of the two connecting piece units 41 are located on the same plane.

[0083] As Figure 7 shown, when it is necessary to connect three (multiple) groups of power brush assemblies 5 with the connecting piece 4, three (multiple) connecting piece units 41 are connected through the threaded post 401 and the connecting screw hole 402, and the flat plate portions 403 of the three (multiple) connecting piece units 41 are located on the same plane. The parallel connection of multiple groups of power brush assemblies 5 for power transmission is realized.

[0084] The connecting piece 4 of the present invention can adjust the functions of the connecting piece units 41 at any time as needed through the combination of multiple connecting piece units 41, connect multiple groups of power brush assemblies 5, and can adapt to the connection requirements of different numbers of power brush assemblies 5 without reprocessing and manufacturing the connecting piece 4. Moreover, adjacent connecting piece units 41 are connected by threaded posts 401 and connecting screw holes 402. By adjusting the screwing depth of the threaded posts 401, the length of the connecting piece 4 and the spacing between adjacent connecting piece units 41 can be adjusted to adapt to the spacing between different power brush assemblies 5.

[0085] As Figure 4 shown, when the power brush assembly 5 is independent, the metal tube 53 is directly connected to the first cable 54; as Figure 1 , Figure 2 shown, when multiple groups of power brush assemblies 5 are combined and connected through the connecting piece 4, the power brush assembly 5 is connected to the first cable 54 through the connecting piece 4.

[0086] During implementation:

[0087] An insulating strip 8 is installed on the power mandrel 9. The inner diameter of the power ring 6 is matched with the insulating strip 8. Adjacent power rings 6 are separated by insulating rings 7. The power ring 6 and the insulating ring 7 are sequentially sleeved on the power mandrel 9. After the power ring 6 and the insulating ring 7 are installed, they are fixed by power retaining rings 3 with screws, so that the power ring 6 is relatively fixed to the power mandrel 9. The power mandrel 9 and the power retaining ring 3 are respectively matched with the inner rings of two bearings 2. The fixing ring 1 is in interference fit with the outer rings of the bearings 2. The support rod 10 is fixed between the two fixing rings 1, so that the power ring 6 rotates relative to the power brush assembly 5 on the support rod 10, realizing the rotational transmission of the current between the power ring 6 and the brush wire 52.

[0088] Embodiment 2

[0089] A specific embodiment of the present invention provides a power transmission method for the modular rotational transmission device in Embodiment 1, including the following steps:

[0090] Step S1: Determine the current-carrying base number of the power ring 6; determine the supply current of the modular rotational transmission device;

[0091] Step S2: Determine the number of power rings 6 according to the current-carrying base number of the power ring 6 and the supply current of the modular rotational transmission device; determine the number of power modules and the number of groups of the power brush assemblies 5 included in each power module;

[0092] Step S3: Assemble the modular rotational transmission device. After power-on, the power ring 6 rotates relative to the power brush assembly 5; the brush wire 52 slides on the surface of the power ring 6 to achieve rotational transmission.

[0093] Further, in the step S1, the power supply current and power of the modular rotary transmission device are determined according to the power consumption requirements of the electrical equipment.

[0094] Further, in the step S2, each power module includes one or more groups of power brush assemblies 5; the maximum carrying current of the rotary transmission device is determined for the power module with the largest number of power brush assemblies 5. When the carrying current of the power ring 6 is nA and the power module includes m groups of power brush assemblies 5, the carrying current of this power module is n×m.

[0095] In a specific embodiment of the present invention, taking the upper limit of the current carried by each power ring 6 = 100A and the number of power rings 6, N = 5 as an example, exemplarily: when five power rings 6 are stacked together and the five groups of power brush assemblies 5 are connected by connecting pieces 4, a power of ≤500A can be transmitted. When each power ring 6 is independent, each transmission channel can transmit a current of ≤100A.

[0096] According to the power transmission channel combination mode table (Table 1), when the number of power rings 6 is 5, a maximum of 5 transmission channels can be combined, and there are 7 combination modes in total, and the transmission current range is ≤500A. When the upper limit of the current carried by each power ring 6 = 100A and the number of power rings N = 5, the power transmission channel combination mode is as follows in the table

[0097] Table 1 - Power transmission channel combination mode

[0098] Transmission channel / M 1 2 3 4 5 Combination mode 5 1+4 / 2+3 1+1+3 / 1+2+2 1+1+1+2 1+1+1+1+1 Maximum current carrying capacity / A 500 400 300 200 100

[0099] Further, by combining multiple groups of power brush assemblies 5 with connecting pieces 4, the maximum current carrying capacity of the transmission device is adjusted. The more the number of power brush assemblies 5 combined by the connecting piece 4, the greater the maximum current carrying capacity of the transmission device.

[0100] As shown in Table 1:

[0101] When there is one group of power modules: The connecting piece 4 combines the five groups of power brush assemblies 5, and the maximum current carrying capacity of the transmission device is 500A.

[0102] When there are two groups of power modules: The number of groups of power brush assemblies 5 in the first group of power modules is 1, and the number of groups of power brush assemblies 5 in the second group of power modules is 4. The connecting piece 4 combines the four groups of power brush assemblies 5, and the maximum current carrying capacity of the transmission device is 400A.

[0103] Or, the first group of power modules has 2 groups of power brush assemblies 5, and the second group of power modules has 3 groups of power brush assemblies 5. The connecting piece 4 combines a maximum of 3 groups of power brush assemblies 5, and the maximum current carrying capacity of the transmission device is 300A. As Figure 1As shown, the number of power rings 6 is 5, and there are two groups of power modules. Among them, the first group of power modules includes two groups of power brush assemblies 5, and the second group of power modules includes three groups of power brush assemblies 5.

[0104] When there are three groups of power modules: the number of power brush assemblies 5 in the first group of power modules and the second group of power modules is 1 each, and the number of power brush assemblies 5 in the third group of power modules is 3. The connecting piece 4 combines at most 3 groups of power brush assemblies 5, and the maximum current-carrying capacity of the transmission device is 300A. Or, the number of power brush assemblies 5 in the first group of power modules is 1, and the number of power brush assemblies 5 in the second group of power modules and the third group of power modules is 2 each. The connecting piece 4 combines at most 2 groups of power brush assemblies 5, and the maximum current-carrying capacity of the transmission device is 200A.

[0105] When there are four groups of power modules: three groups of power brush assemblies 5 are independent, the connecting piece 4 combines at most 2 groups of power brush assemblies 5, and the maximum current-carrying capacity of the transmission device is 200A.

[0106] When there are five groups of power modules: the five groups of power brush assemblies 5 are all independent, and the maximum current-carrying capacity of the transmission device is 100A.

[0107] Furthermore, in step S3, the assembly method of the modular rotary transmission device of the present invention is as follows:

[0108] Step S31: Install the insulating strip 8 in the insulating groove of the power mandrel 9, and successively sleeved the power ring 6 and the insulating ring 7 on the power mandrel 9. The inner diameter of the power ring 6 is matched with the insulating strip 8, and adjacent power rings 6 are separated by the insulating ring 7;

[0109] Step S32: Rotationally install two fixing rings 1 at both ends of the power mandrel 9 through bearings 2; four support rods 10 are fixedly installed between the two fixing rings 1;

[0110] Step S33: Install the power brush assembly 5 on the support rod 10 through screws; when the power mandrel 9 rotates relative to the fixing ring 1, the power ring 6 rotates relative to the power brush assembly 5 on the support rod 10, and the brush wire 52 is in sliding contact with the power ring 6, and current can be rotationally transmitted between the power ring 6 and the brush wire 52.

[0111] Furthermore, in step S33, by aligning different mounting holes on the positioning plate 51 of the power brush assembly 5 with the threaded holes on the support rod 10, the relative position between the brush wire 52 and the power ring 6 can be adjusted, and the pressing force between the brush wire 52 and the power ring 6 can be changed.

[0112] Compared with the prior art, the technical solution provided by this embodiment has at least one of the following beneficial effects:

[0113] 1. The modular rotary transmission device of the present invention aims to provide a power rotary transmission device that is convenient to install and has a low cost, can be modularly combined and installed, and can combine different transmission requirements according to different usage requirements, can achieve combinations of various different powers and different carrier currents, and can meet different power supply demands in the market. The power brush module is convenient to assemble and install quickly.

[0114] 2. For the modular rotary transmission device of the present invention, the power modular design effectively reduces the design cost and improves the design efficiency; the product is modular with good interchangeability and is convenient for maintenance;. The power modularity is beneficial to improving the standardization degree of the product, enhancing the product quality and reliability; the power brush filament bundle has a simple structure and is convenient for assembly.

[0115] 3. The modular rotary transmission device of the present invention adopts a modular combined installation method, improves the product design and assembly efficiency through optimization, reduces the production cost, the power brush module is convenient to assemble and install quickly, effectively reduces the damage degree of parts during disassembly, installation and maintenance, and greatly extends the product life.

[0116] 4. For the modular rotary transmission device of the present invention, the types of parts of the power ring and the insulating ring are unique and will not be confused during installation, with high efficiency, and the power brush filament bundle has a simple structure and is convenient for assembly.

[0117] 5. The modular rotary transmission device of the present invention is conducive to improving the standardization degree of the product, enhancing the product quality and reliability through power modular installation and combination; effectively reduces the design and production cost, improves the standardization and generalization of the product, shortens the product cycle, is conducive to realizing the high-quality and large-volume rapid ex-factory of the product, and improves the production efficiency.

[0118] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A power transmission method of a modular rotary transmission device, characterized in that: The modular rotary transmission device comprises: a power module, a power core shaft (9) and an outer cover; the power core shaft (9) is arranged inside the outer cover and can rotate relative to the outer cover; The power module is mounted on the outer cover; there are multiple groups of the power modules; a power ring (6) is fixedly mounted outside the power core shaft (9); a contact piece of the power module is in sliding contact with the power ring (6) and can achieve electrical connection; Each group of power modules includes one or more power units; the power units include: a power ring (6) and a group of power brush assemblies (5); adjacent power units are connected via connecting pieces (4) to achieve superposition of carrying currents; the connecting pieces (4) are modularly assembled from a plurality of connecting piece units (41); the connecting pieces (4) can meet the connection requirements of different numbers of power brush assemblies (5) through the combination of a plurality of connecting piece units (41); The outer cover comprises: a fixing ring (1) and a support rod (10); the power brush assembly (5) comprises: a positioning plate (51), brush wires (52), a metal tube (53) and a first cable (54); there are a plurality of brush wires (52), and the brush wires (52) are gathered in the metal tube (53); The brush wire (52) is in close contact with the outer surface of the power ring (6); a plurality of parallel mounting holes are arranged on the positioning plate (51), and mounting screws in the mounting holes of the positioning plate (51) are fixedly connected to the support rod (10); by changing the alignment of different mounting holes on the positioning plate (51) of the power brush assembly (5) with the threaded holes on the support rod (10), the relative position of the brush wire (52) and the power ring (6) can be adjusted, and the pressing force between the brush wire (52) and the power ring (6) can be changed; The power transmission method comprises the following steps: Step S1: determining the current carrying base of the power ring (6); determining the power supply current of the modular rotary transmission device; Step S2: determining the number of power rings (6) according to the current-carrying base of the power rings (6) and the power supply current of the modular rotary transmission device; determining the number of power modules and the number of groups of power brush assemblies (5) included in each group of power modules; Step S3: After the modular rotary transmission device is assembled, after power is supplied, the power ring (6) rotates relative to the power brush assembly (5); the brush wires (52) slide on the surface of the power ring (6) to achieve rotary transmission.

2. The power transmission method of the modular rotary transmission device according to claim 1, characterized in that The power module comprises one or more groups of power brush assemblies (5).

3. The power transmission method of the modular rotary transmission device according to claim 2, characterized in that, There are a plurality of power rings (6), which are sleeved in parallel on the outside of the power core shaft (9) and are independent of each other; an insulating ring (7) is provided between adjacent power rings (6).

4. The power transmission method of the modular rotary transmission device according to claim 3, characterized in that An insulating strip (8) is provided between the power ring (6) and the power core shaft (9); and the power ring (6) is electrically connected to a second cable.

5. The power transmission method of the modular rotary transmission device according to claim 4, characterized in that, The contact piece is a brush wire (52) made of metal.

6. The power transmission method of the modular rotary transmission device according to claim 5, characterized in that There are at least two support rods (10) which are perpendicular to the fixing ring (1); the support rods (10) are evenly distributed in the circumferential direction of the fixing ring (1).

7. The power transmission method of the modular rotary transmission device according to claim 6, characterized in that, The fixing ring (1) is an annular structure, the power core shaft (9) is coaxial with the fixing ring (1), and the power core shaft (9) is rotatably mounted on the fixing ring (1) via a bearing (2).

8. The power transmission method of the modular rotary transmission device according to claim 7, characterized in that The brush filaments (52) are multiple, and the brush filaments (52) are gathered in the metal tube (53).

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