Rotary transmission slip ring with heat dissipation structure

Abstract

The utility model relates to a conductive slip ring structure, in particular to a rotary transmission slip ring with a heat dissipation structure, which comprises a shell, a rotor and a stator, the rotor is rotatably arranged in the shell, a plurality of conductive rings are sleeved on the outer wall of the rotor, and an insulating ring is arranged between two adjacent conductive rings; the stator is fixedly connected with the inner wall of the shell, a plurality of electric brush plates are installed on the stator and are in one-to-one sliding fit with the conducting rings, air inlet holes and air outlet holes are formed in the two opposite sides, aligned to the outer wall of the rotor, of the shell respectively, air inlet pipes are installed in the air inlet holes, and air inlet fans are installed in the air inlet pipes. Air filtering cotton is arranged at the end, outside the shell, of the air inlet pipe, an air outlet pipe is installed in the air outlet hole, and an exhaust fan is installed in the air outlet pipe. By arranging the air inlet fan and the exhaust fan, heat dissipation airflow can be formed in the shell, external cold air is conveyed into the shell through the air inlet pipe and makes contact with the surfaces of the rotor and the stator, so that the temperature of the air is increased through heat exchange, the heated hot air is exhausted through the air outlet pipe, and the whole transmission sliding ring can be kept in a low-temperature state.

Description

Technical Field

[0001] The utility model relates to a conductive slip ring structure, in particular to a rotary transmission slip ring with a heat dissipation structure. Background Technique

[0002] As a key electromechanical component, the conductive slip ring has a wide range of applications in many fields, such as aerospace, military equipment, wind power generation, industrial automation, etc. It can realize the reliable transmission of electricity, signals, etc. during the rotation of the equipment, and the quality of its performance directly affects the operation stability and reliability of the entire system.

[0003] At present, the manufacturing technology of conductive slip rings has been relatively mature. In terms of materials, commonly used brush materials include precious metal brushes, graphite brushes, etc., and ring channel materials such as copper and gold. These materials have good performance in terms of conductivity, wear resistance, etc. In terms of structural design, there are various types such as through-hole type and disc type to meet the installation and use requirements of different equipment. In the aerospace field, conductive slip rings are used in equipment such as satellites and aircraft to ensure data transmission and power supply of various sensors and control systems. In the field of industrial automation, such as in equipment like robot joints and rotary tables, conductive slip rings can achieve signal and power transmission during continuous rotation. In the wind power generation field, the blade pitch control system of large wind turbines requires conductive slip rings to ensure the reliable transmission of control signals and power.

[0004] Some existing large conductive slip rings, when used for a long time and in the case of high-power transmission, will generate heat, resulting in local temperature rise. And with the continuous operation of the conductive slip ring, in addition to the heat generated by the current passing through, the friction of the conductive slip ring itself will also generate heat, which causes the temperature of the conductive slip ring to continue to rise to a relatively high temperature. At this high temperature, it may have an adverse impact on both the transmission equipment and the conductive slip ring itself, reducing the service life of the slip ring. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a rotary transmission slip ring with a heat dissipation structure to solve the problem that in the prior art, for a conductive slip ring used for high-power transmission, it is difficult for the temperature of the conductive slip ring to drop after it rises during continuous operation.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A rotary transmission slip ring with a heat dissipation structure, comprising a housing, a rotor and a stator. The rotor is rotatably arranged in the housing. A plurality of conductive rings are sleeved on the outer wall of the rotor, and insulating rings are arranged between adjacent two conductive rings. The stator is fixedly connected to the inner wall of the housing. A plurality of brush plates are installed on the stator, and the plurality of brush plates are in sliding fit with the plurality of conductive rings one by one. Air inlet holes and air outlet holes are respectively arranged on the opposite sides of the housing opposite to the outer wall of the rotor. An air inlet pipe is installed in the air inlet hole, an air inlet fan is installed in the air inlet pipe, an air filter cotton is arranged at one end of the air inlet pipe outside the housing, an air outlet pipe is installed in the air outlet hole, and an exhaust fan is installed in the air outlet pipe.

[0008] A further technical solution is that a gas guide cavity is arranged in the stator, a plurality of air holes communicating with the gas guide cavity are arranged on one side of the stator facing the rotor, the plurality of air holes correspond to the plurality of conductive rings one by one, and the air inlet pipe is connected to the gas guide cavity through a connecting pipe.

[0009] A further technical solution is that one end of the connecting pipe is connected to the gas guide cavity, and the other end is provided with a socket, and one end of the air inlet pipe connected to the connecting pipe is clamped in the socket.

[0010] A further technical solution is that a first thread is arranged around the hole wall of the air inlet hole, a second thread matching the first thread is arranged on the outer wall of the air inlet pipe, and when the air inlet pipe is installed in the air inlet hole, the first thread and the second thread are threadedly connected.

[0011] A further technical solution is that the air filter cotton is installed at one end of the air inlet pipe outside the housing through an installation box. A filling cavity is arranged in the installation box, and filter holes communicating with the filling cavity are arranged at both ends of the installation box. A third thread is arranged around the outer wall of the installation box, and a fourth thread matching the third thread is arranged around the inner wall of the air inlet pipe. When the installation box is installed in the air inlet pipe, the third thread and the fourth thread are threadedly connected.

[0012] A further technical solution is that a knob ring is arranged around the outer wall of the installation box.

[0013] A further technical solution is that a wire passing hole penetrating through the inner and outer sides is further arranged on the housing, a wire collecting pipe is installed in the wire passing hole, a connecting wire is arranged in the wire collecting pipe, one end of the connecting wire is connected to the brush plate, and the other end is located outside the housing.

[0014] A further technical solution is that a plurality of fixing holes are arranged on the stator, one end of the brush plate is connected to the fixing hole, and the other end is in sliding fit with the conductive ring.

[0015] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. By arranging an intake fan and an exhaust fan, a heat dissipation air flow can be formed inside the housing, and the outside cold air is transported into the housing through the intake pipe and contacts the surfaces of the rotor and the stator. Thus, the air is heated through heat exchange, and the heated hot air is discharged through the outlet pipe, so that the whole transmission slip ring can be kept in a low-temperature state; 2. By arranging an air filter cotton, the air entering the housing can be filtered to avoid bringing too much dust into the housing during heat dissipation. On the one hand, the accumulated dust will cause the conductive ring and the brush plate to heat up faster, and at the same time, it will also affect the conductivity between the conductive ring and the brush plate. Description of the Drawings

[0016] Figure 1 Fig. is an overall schematic diagram of a rotary transmission slip ring with a heat dissipation structure according to the utility model.

[0017] Figure 2 Fig. is a schematic diagram of the inside of the housing of a rotary transmission slip ring with a heat dissipation structure according to the utility model.

[0018] Figure 3 Fig. is a side sectional view of a rotary transmission slip ring with a heat dissipation structure according to the utility model.

[0019] Figure 4 is Figure 3 a partially enlarged schematic diagram at the marked position A in

[0020] Figure 5 Fig. is a schematic diagram of the stator of a rotary transmission slip ring with a heat dissipation structure according to the utility model.

[0021] Reference numerals: 1 - housing, 2 - rotor, 3 - stator, 4 - conductive ring, 5 - insulating ring, 6 - brush plate, 7 - intake hole, 8 - outlet hole, 9 - intake pipe, 10 - intake fan, 11 - air filter cotton, 12 - outlet pipe, 13 - exhaust fan, 14 - air guide cavity, 15 - air hole, 16 - socket, 17 - mounting box, 18 - filling cavity, 19 - knob ring, 20 - wire passing hole, 21 - wire collecting pipe, 22 - fixing hole, 23 - connecting pipe. Detailed Embodiments

[0022] In order to make the objectives, technical solutions and advantages of the utility model clearer, the following further describes the utility model in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, but not to limit the utility model.

[0023] Figures 1 to 5 The following shows an embodiment of the utility model.

[0024] Embodiment:

[0025] A rotary transmission slip ring with a heat dissipation structure, comprising a housing 1, a rotor 2 and a stator 3. The rotor 2 is rotatably arranged in the housing 1. A plurality of conductive rings 4 are sleeved on the outer wall of the rotor 2, and an insulating ring 5 is arranged between two adjacent conductive rings 4. The stator 3 is fixedly connected to the inner wall of the housing 1. A plurality of brush plates 6 are installed on the stator 3, and the plurality of brush plates 6 are in sliding fit with the plurality of conductive rings 4 one by one. Air inlet holes 7 and air outlet holes 8 are respectively arranged on the opposite sides of the housing 1 opposite to the outer wall of the rotor 2. An air inlet pipe 9 is installed in the air inlet hole 7, an air inlet fan 10 is installed in the air inlet pipe 9, and an air filter cotton 11 is arranged at one end of the air inlet pipe 9 outside the housing 1. An air outlet pipe 12 is installed in the air outlet hole 8, and an exhaust fan 13 is installed in the air outlet pipe 12. By arranging the air inlet fan 10 and the exhaust fan 13, a heat dissipation air flow can be formed inside the housing 1, and the outside cold air can be conveyed into the housing 1 through the air inlet pipe 9 and contact the surfaces of the rotor 2 and the stator 3, so that the air is heated through heat exchange, and the heated hot air is discharged through the air outlet pipe 12, so that the whole transmission slip ring can be kept in a low temperature state. By arranging the air filter cotton 11, the air entering the housing 1 can be filtered to avoid too much dust being brought into the housing 1 during heat dissipation. On the one hand, the accumulated dust will cause the conductive rings 4 and the brush plates 6 to heat up faster, and at the same time, it will also affect the conductivity between the conductive rings 4 and the brush plates 6. When working, the rotor 2 rotates together with the rotating assembly.

[0026] An air guide cavity 14 is arranged in the stator 3. A plurality of air holes 15 communicating with the air guide cavity 14 are arranged on one side of the stator 3 facing the rotor 2. The plurality of air holes 15 correspond to the plurality of conductive rings 4 one by one, and the air inlet pipe 9 is connected to the air guide cavity 14 through a connecting pipe 23. By arranging the cooperation of the air guide cavity 14 and the air holes 15, the cold air entering the housing 1 can be evenly distributed, so that the cold air can directly blow against each conductive ring 4 evenly, so that all the conductive rings 4 can be efficiently cooled and local uneven cooling can be avoided.

[0027] One end of the connecting pipe 23 is connected to the air guide cavity 14, and the other end is provided with a socket 16. One end of the air inlet pipe 9 connected to the connecting pipe 23 is clamped in the socket 16. By arranging the connecting pipe 23, it is convenient to connect the air inlet pipe 9 to the air guide cavity 14, and in the form of the socket 16 connection, the quick installation and quick disassembly between the connecting pipe 23 and the air inlet pipe 9 can be realized.

[0028] The inner wall of the hole surrounding the air inlet hole 7 is provided with a first thread, and the outer wall of the air inlet pipe 9 is provided with a second thread matching the first thread. When the air inlet pipe 9 is installed in the air inlet hole 7, the first thread and the second thread are threadedly connected. When it is necessary to repair the air inlet fan 10 or the air filter cotton 11, the air inlet pipe 9 is rotated to connect or separate the first thread and the second thread, so as to realize the installation or disassembly of the air inlet pipe 9.

[0029] The air filter cotton 11 is installed at one end of the intake pipe 9 outside the housing 1 through the installation box 17. A filling cavity 18 is arranged in the installation box 17, and filter holes communicating with the filling cavity 18 are arranged at both ends of the installation box 17. A third thread is arranged around the outer wall of the installation box 17, and a fourth thread matching the third thread is arranged around the inner wall of the intake pipe 9. When the installation box 17 is installed in the intake pipe 9, the third thread and the fourth thread are threadedly connected. By providing the installation box 17, it is convenient to stably install the air filter cotton 11 into the intake pipe 9, block the intake pipe 9, and fix the shape of the air filter cotton 11 by means of the filling cavity 18 to achieve effective air filtration. Using the third thread and the fourth thread for connection is convenient for the installation and disassembly of the installation box 17.

[0030] A knob ring 19 is arranged around the outer wall of the installation box 17. By providing the knob ring 19, it is convenient to drive the installation box 17 to rotate when installing and disassembling the installation box 17.

[0031] A wire passing hole 20 penetrating through the inner and outer sides is also arranged on the housing 1. A wire collecting pipe 21 is installed in the wire passing hole 20, and connecting wires are arranged in the wire collecting pipe 21. One end of the connecting wire is connected to the brush plate 6, and the other end is outside the housing 1. By providing the wire passing hole 20 and the wire collecting pipe 21, it is convenient to organize all the connecting wires so that the connecting wires can be concentrated together, facilitating the operator to connect to the external circuit.

[0032] A plurality of fixing holes 22 are arranged on the stator 3. One end of the brush plate 6 is connected to the fixing holes 22, and the other end is in sliding fit with the conductive ring 4. By providing the fixing holes 22, the brush plate 6 can be stably installed on the stator 3.

[0033] Although the present invention has been described herein with reference to multiple illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope of the principles and spirit disclosed in this application. More specifically, within the scope of the disclosure, the drawings, and the claims of this application, various variations and improvements can be made to the components and / or the layout of the subject combination layout. In addition to the variations and improvements to the components and / or the layout, other uses will also be obvious to those skilled in the art.

Claims

1. A rotating transmission slip ring with a heat dissipation structure, comprising a housing (1), a rotor (2) and a stator (3). The rotor (2) is rotatably arranged in the housing (1). A plurality of conductive rings (4) are sleeved on the outer wall of the rotor (2), and an insulating ring (5) is arranged between two adjacent conductive rings (4). The stator (3) is fixedly connected to the inner wall of the housing (1), and a plurality of brush plates (6) are installed on the stator (3). The plurality of brush plates (6) are in sliding fit with the plurality of conductive rings (4) one by one. It is characterized in that, On opposite sides of the housing (1), intake holes (7) and exhaust holes (8) are respectively arranged opposite to the outer wall of the rotor (2). An intake pipe (9) is installed in the intake hole (7), and an intake fan (10) is installed in the intake pipe (9). One end of the intake pipe (9) located outside the housing (1) is provided with an air filter cotton (11). An exhaust pipe (12) is installed in the exhaust hole (8), and an exhaust fan (13) is installed in the exhaust pipe (12).

2. The rotating transmission slip ring with a heat dissipation structure according to claim 1, characterized in that: A gas guide cavity (14) is arranged inside the stator (3). On one side of the stator (3) facing the rotor (2), a plurality of air holes (15) communicating with the gas guide cavity (14) are arranged. The plurality of air holes (15) correspond to the plurality of conductive rings (4) one by one. The intake pipe (9) is connected to the gas guide cavity (14) through a connecting pipe (23).

3. The rotary transmission slip ring with a heat dissipation structure according to claim 2, wherein: One end of the connecting pipe (23) is connected to the gas guide cavity (14), and the other end is provided with a socket (16). One end of the intake pipe (9) connected to the connecting pipe (23) is clamped in the socket (16).

4. The rotary transmission slip ring with a heat dissipation structure according to claim 1, wherein: A first thread is arranged around the hole wall of the intake hole (7), and a second thread matching the first thread is arranged on the outer wall of the intake pipe (9). When the intake pipe (9) is installed in the intake hole (7), the first thread and the second thread are threadedly connected.

5. The rotating transmission slip ring with a heat dissipation structure according to claim 1, characterized in that: The air filter cotton (11) is installed at one end of the intake pipe (9) located outside the housing (1) through an installation box (17). A filling cavity (18) is arranged inside the installation box (17). Filter holes communicating with the filling cavity (18) are arranged at both ends of the installation box (17). A third thread is arranged around the outer wall of the installation box (17), and a fourth thread matching the third thread is arranged around the inner wall of the intake pipe (9). When the installation box (17) is installed in the intake pipe (9), the third thread and the fourth thread are threadedly connected.

6. The rotary transmission slip ring with a heat dissipation structure according to claim 5, characterized in that: A knob ring (19) is arranged around the outer wall of the installation box (17).

7. The rotating transmission slip ring with a heat dissipation structure according to claim 1, characterized in that: A wire passing hole (20) penetrating through the inner and outer sides is further arranged on the housing (1). A wire collecting pipe (21) is installed in the wire passing hole (20). A connecting wire is arranged inside the wire collecting pipe (21). One end of the connecting wire is connected to the brush plate (6), and the other end is located outside the housing (1).

8. The rotary transmission slip ring with a heat dissipation structure according to claim 1, characterized in that: A plurality of fixing holes (22) are arranged on the stator (3). One end of the brush plate (6) is connected to the fixing holes (22), and the other end is in sliding fit with the conductive ring (4).

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