Slip ring electric signal transmission device based on rotating shaft driven by robot mechanical arm motor

Abstract

The utility model discloses a slip ring electric signal transmission device based on a robot mechanical arm motor driving rotating shaft, which comprises a female plate (MH01) and a male plate (GH01) which are coaxially arranged, the opposite surfaces of the female plate (MH01) and the male plate (GH01) are respectively provided with concentric copper rings with the same number and specification, and two opposite copper rings form a group. Each group of copper rings are in contact through a metal probe (TZ01), and each group of copper rings is used for transmitting one kind of electric signals. According to the device, by optimizing the connecting structure between the mechanical arm rotating shaft and the sliding ring, efficient and stable electric signal transmission is achieved, the abnormal problem in traditional signal transmission is avoided, the signal transmission quality is improved, and accurate control over a robot system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to robot technical field, concretely relates to a motor drive pivot slip ring electric signal transmission device for robot mechanical arm. BACKGROUND

[0002] With the progress of industrial automation and robot technology, the precision and stability of power and signal transmission system are put forward higher requirements when mechanical arm executes the task. However, the traditional electric signal transmission system is difficult to provide efficient, interference-free transmission in the process of mechanical arm rotation. Although the existing slip ring technology can solve the problem of power and signal transmission between (specific angle) rotating and fixed components, there are still the following problems in joint degrees of freedom, signal quality, anti-interference ability, life and efficiency, etc.:

[0003] 1. Poor signal transmission stability: the existing slip ring electric signal transmission device in the long-term use process, long-term use leads to friction, wear and poor contact, and further affects the stability and transmission quality of signal. It seriously affects the control accuracy and system reliability of mechanical arm.

[0004] 2. Complex installation and maintenance: the existing signal transmission device usually needs complex wiring and installation structure, especially when the mechanical arm rotates greatly, the cable, slip ring and contactor are easy to be damaged, which increases the maintenance cost of the system, and is inconvenient to replace or repair.

[0005] 3. Poor adaptability: the existing electric signal transmission device cannot provide sufficient transmission stability in high load and high precision application scenarios, which limits the application of mechanical arm in high speed and high precision operation.

[0006] 4. Low signal transmission efficiency: the existing device has insufficient capability in high frequency signal transmission, and has problems such as transmission delay and distortion, which causes bottleneck in real-time control and accurate feedback of mechanical arm, and cannot meet the high performance demand.

[0007] 5. Constraint of mechanical arm joint movement: the existing joint device adopts mechanical structure to connect joint motor to realize rotary motion, and adopts wired mode to transmit electric signal. Taking a common series robot as an example, the possible angle range of a rotary joint is-180° to 180°. After the angle rotation command is finished, it must return to the original point coordinate 0°. Otherwise, the wire for transmitting power and electric signal will be in twisted and deformed state for a long time, thereby reducing the transmission rate of power and electric signal, reducing the service life, increasing the maintenance cost, etc. The existing series joint device cannot meet the requirements of 360° uninterrupted free movement and synchronous transmission of high speed electric signal.

[0008] Therefore, there is an urgent need for a new slip ring electrical signal transmission device to solve the above problems, provide an efficient, stable, long-life electrical signal transmission solution, and be particularly suitable for high-precision automation systems. SUMMARY

[0009] The utility model discloses a kind of transmission devices of slip ring electrical signal based on robot mechanical arm motor drive rotating shaft, which realizes the efficient stable transmission of power and signal by optimizing slip ring structure, material and contact design, solves the problems such as signal attenuation, signal transmission anomaly and friction wear in prior art.

[0010] The utility model discloses a technical scheme:

[0011] A kind of slip ring electrical signal transmission device based on robot mechanical arm motor drive rotating shaft, including coaxially arranged female plate MH01 and male plate GH01, it is characterized in that: the opposite surface of female plate MH01 and male plate GH01 is respectively installed with same number and same specification concentric copper ring, opposite two copper rings are a group, contact is realized between each group of copper ring by metal probe TZ01, and each group of copper ring is used to transmit one kind of electrical signal.

[0012] Metal probe TZ01 is fixedly installed on the copper ring of female plate MH01, and the metal probe TZ01 includes a mounting seat, a spring and a contact point, the contact point is installed in the mounting seat by the spring, and the mounting seat is fixed on the copper ring.

[0013] The back of female plate MH01 and male plate GH01 is provided with signal leading groove, signal bus MS21 is installed in the groove, and conductive perforation is provided in the groove bottom corresponding to the position of each copper ring.

[0014] There are 4 groups of copper rings, and each group of copper ring is provided with 8 evenly distributed metal probes TZ01.

[0015] The back of female plate MH01 and male plate GH01 is provided with three signal leading grooves, and the signal leading grooves are spaced apart by 120 degrees; insulating bakelite cover plate MG20 is installed in the signal leading groove to make the surface flush.

[0016] Both sides of each copper ring are provided with insulating isolation tables.

[0017] Male plate GH01 and female plate MH01 are made of high-density bakelite material, and male plate GH01 is provided with protruding rotating shaft GI12, and female plate MH01 is provided with a central hole and is sleeved on rotating shaft GI12.

[0018] A circle of counterbores is formed on the end face of rotating shaft GI12.

[0019] A circle of fixed counterbores is formed on the back of female plate MH01.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] 1. Efficient and stable electrical signal transmission: The device optimizes the connection structure between the mechanical arm rotating shaft and the slip ring, achieving efficient and stable electrical signal transmission, avoiding abnormal problems in traditional signal transmission, improving signal transmission quality, and ensuring accurate control of the robot system.

[0022] 2. Improve the motion accuracy of the mechanical arm: Due to more stable and efficient electrical signal transmission, the motion control accuracy of the mechanical arm is significantly improved, especially in fine operations, providing more accurate feedback, thereby enhancing the application performance of the mechanical arm in complex tasks.

[0023] 3. Improve the freedom of the mechanical arm joint structure: The device realizes 360° uninterrupted free rotation of the joint between the mechanical arm and the arm, and can synchronously transmit high-speed power and electrical signals, thereby improving the flexibility, linkage freedom, and accuracy of the mechanical arm joint.

[0024] 4. Reduce failure rate and maintenance cost: The design of the device reduces the failure rate caused by poor contact or wear of traditional electrical signal transmission devices, improves the long-term operation reliability of the mechanical arm, and reduces the maintenance frequency and repair cost.

[0025] 5. Enhance the durability of the device: By optimizing the material selection and structure design of the slip ring and rotating shaft, the device exhibits stronger wear resistance and corrosion resistance in high-frequency operation and long-time work of the mechanical arm, thereby prolonging the service life.

[0026] 6. Strong adaptability, widely used: The transmission device is not only suitable for the motor drive system of the robot mechanical arm, but also can be widely used in other systems that require continuous transmission of electrical signals, such as automatic production lines, unmanned aerial vehicles, and other intelligent device drive systems.

[0027] 7. Simplify the design and manufacturing process: Compared with traditional transmission systems, the device has a more concise structure and more efficient manufacturing process, which can reduce production costs and facilitate rapid integration into existing robot systems. BRIEF DESCRIPTION OF DRAWINGS

[0028] 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 involved in the embodiment or prior art description. Obviously, the following drawings only show some embodiments of the present application, and those skilled in the art can also deduce other related drawings based on these drawings without creative labor.

[0029] Figure 1 . The mechanical arm rotating shaft signal transmission slip mother plate front view.

[0030] Figure 2 .Figure 1 Back view of the signal transmission female slip ring.

[0031] Figure 3 Front view of the signal transmission male slip ring for the mechanical arm rotating shaft.

[0032] Figure 4 Figure 3 Back view of the signal transmission male slip ring.

[0033] Figure 5

[0034] Figures 1 to 4 The reference signs in the drawings are as follows: MT01-MT04: copper ring; MG06-MG10 / GD05-GD09: high-density bakelite insulating plate; MT10-MT13: metal probe with elastic design, a total of 8 groups and 32 probes; MC15 / GC11: fixed perforation; MS16-MS19 / GS14-GS17: wire perforation; MG20 / GG18: insulating bakelite cover plate; MS21 / GD13: signal transmission bus; GD10: rotating shaft; GD12: positioning point. Note: the letter M represents the female slip ring, G represents the male slip ring, D refers to the contact positioning between the male slip ring and the female slip ring, T represents the copper wire, C is a counterbore, S is a data bus, and I is an insulating isolation platform. DETAILED DESCRIPTION

[0035] Structural design:

[0036] Male and female slip ring structure: the male and female slip ring structure of the utility model is designed in a one-to-one manner, and the two are connected through metal probes to ensure stable signal transmission. Both the male and female slip rings use high-density bakelite materials, which have excellent electrical insulation and mechanical strength and can withstand long-term working load.

[0037] Metal probe design: in order to ensure stable transmission, the metal probe design adopts the elastic principle, a total of 8 groups and 32 probes, which ensures stable contact at each connection point and avoids signal transmission abnormalities caused by signal interruption due to poor contact of individual probes during the rotation of the mechanical arm.

[0038] Signal transmission structure:

[0039] Copper ring design of the male and female slip rings: four copper rings are installed in the male and female slip rings, and the copper ring of the female slip ring is connected with the male slip ring through the welded metal probe. In actual work, the elastic design of the metal probe can provide a certain pressure, ensuring that the copper rings always maintain good contact during the rotation of the rotating shaft of the mechanical arm, and ensuring stable signal transmission.

[0040] ​​Optimization of contact structure: Four small holes are opened on the back of the female plate for motor signal contact with the copper ring. The male plate also has corresponding small holes, so that the female plate can accurately transmit signals to the copper ring of the male plate, and then the data signals are exported through the four small holes on the back of the male plate and transmitted to the next level control system. Through precise structure design and hole opening cooperation, the signal transmission between the male plate and the female plate is more accurate, effectively avoiding signal loss and interference caused by poor contact in traditional slip rings.

[0041] Positioning design:

[0042] Male plate center protrusion design: In order to ensure the accurate docking between the male plate and the female plate, the utility model designs the protruding structure of the center part of the male plate. The protruding design plays a positioning role in the assembly process, ensuring the docking accuracy of the male plate and the female plate, so as to ensure that there is no deviation or misconnection in the signal transmission process.

[0043] Signal stability and efficient transmission:

[0044] Advantages of elastic probe: The elastic design of the metal probe ensures that the contact point remains stable even in a high-frequency vibration or long-term rotation working environment. In this way, the signal transmission is not disturbed during the rotation of the mechanical arm, ensuring the continuity and stability of the signal.

[0045] Accurate signal transmission: Through the precise design of the copper ring and the small hole, the signal is accurately transmitted from the motor signal end of the female plate to the copper ring of the male plate, and then to the next level signal connection, effectively avoiding signal transmission abnormalities.

[0046] Embodiment:

[0047] A slip ring electrical signal transmission device based on a robot mechanical arm motor-driven rotating shaft, the device body includes a female plate MH01 and a male plate GH01, wherein the female plate and the male plate are connected by a metal probe TZ01.

[0048] The female plate MH01 is provided with a metal probe TZ01, a copper ring MT01, an insulating bakelite cover plate MG20, a fixed counterbore MC15, a signal bus MS21 and a conductive perforation MS16-M19.

[0049] The male plate GH01 includes a copper ring GT01, a fixed counterbore GC11, a contact positioning counterbore GD12, an isolation layer GI05, a signal bus GS13 and an insulating bakelite cover plate GG18.

[0050] The metal probe TZ01 is 8 groups of 4, a total of 32 probes, located above the copper ring MT01 on the motherboard, through the probe on the motherboard and the copper ring GT01 on the male plate to connect the electrical signal, the metal probe TZ01 ensures stable contact of each connection point through elastic design, ensures that the signal is not disturbed or interrupted during the rotation of the shaft, thereby ensuring the stability and efficiency of signal transmission. The copper ring is made of high-conductivity copper alloy material to ensure efficient signal transmission and reduce resistance loss. Precise welding is carried out in the copper ring to ensure the firm connection and stability of the metal probe.

[0051] The fixed counterbore MC15 / GC11 is used in combination with a fixing device such as a screw, nut or snap spring, so that the components on the motherboard MH01 can be firmly fixed in the predetermined position, thereby avoiding changes in the position of the components due to external vibration or load.

[0052] The metal probe is made of a low-resistance metal material with elasticity and can automatically adjust the pressure according to the rotation of the shaft during use to ensure the stability of the contact point. The metal probe includes a mounting seat, a spring and a contact point, the contact point is installed in the mounting seat through the spring, and the mounting seat is fixed on the copper ring.

[0053] The motherboard MH01 and the male plate GH01 are respectively provided with small holes MS16-M19 and GS14-GS19 to ensure that the motor signal is contacted through the copper ring and the signal is accurately transmitted.

[0054] The male plate GH01 and the motherboard MH01 are made of high-density bakelite material, which has good electrical insulation and mechanical strength, can effectively isolate current and ensure that the signal is not disturbed, has good electrical insulation and mechanical strength, the male plate is designed with a protruding part as the shaft GI12, and the motherboard MH01 is designed with a recess, which ensures accurate docking during rotation and prevents deviation during signal transmission. The motherboard MH01 can rotate at any angle relative to the male plate GH01.

[0055] The insulating bakelite cover plate MG20 is located on the back plate of the motherboard MH01 and the male plate GH01 and covers the top of the signal bus, which plays a role in electrical insulation and protection, preventing external current or signal interference from affecting internal signal transmission.

[0056] The metal probe TZ01 is welded in the motherboard copper ring MT01, which provides pressure through elastic design to ensure that the copper ring contact point always maintains good contact, thereby ensuring the stability of signal transmission.

[0057] The device optimizes signal transmission structure through multiple contact holes and copper rings, ensuring that signal transmission quality is not affected in high-load and high-speed rotation environments. The device can maintain low wear and failure rates during long-term operation, reducing maintenance costs and downtime. The device can operate stably under vibration testing and long-term load testing, adapting to high-speed and high-load motion conditions of robotic arms. The device has a modular design, making it easy to disassemble, replace, or repair, reducing maintenance costs. The device can work in extreme environments such as high temperature, low temperature, and high humidity, ensuring stable signal transmission in various environments. The device can be widely used in robotic arms, power tools, automated production lines, and other intelligent devices, especially in systems that require signal transmission through rotating shafts.

[0058] Installing male and female boards: First, install the male and female boards on the rotating shaft part of the robotic arm through the fixing device. The male and female boards are connected through the set protruding positioning part (rotating shaft), ensuring that they always maintain relative positioning during rotation. After installation, the signal output port of the female board is connected to the signal end of the motor of the robotic arm, and the signal output port of the male board is connected to the robot control system. In this way, when the motor rotates, the signal can be stably transmitted from the motor to the control system through the slip ring.

[0059] Static test: In the absence of rotation, test the stability of signal transmission to ensure that the signal can be accurately transmitted from the motor to the control system without signal loss or interference.

[0060] Dynamic test: Start the motor of the robotic arm and perform rotating shaft rotation test to check the stability of signal transmission of the slip ring under high-speed rotation. By monitoring signal strength and accuracy, verify that the signal transmission process is normal.

[0061] Vibration test: To simulate the working environment of the robotic arm, perform vibration test to verify whether the slip ring can still maintain stable signal transmission under vibration.

[0062] Finally, perform long-term operation test on the slip ring system to simulate the working state of the robotic arm under different loads and frequent movements, check whether the metal probe and copper ring contact is stable, and whether the probe has wear or looseness phenomenon, to ensure the reliability and durability of the slip ring system.

[0063] By using elastic design metal probes and precision machined copper rings, the slip ring system can maintain good contact during the rotation of the robotic arm, ensuring stable signal transmission. Regardless of the rotation of the robotic arm, the signal between the motor and the control system can always be accurately transmitted.

[0064] The public plate and the mother plate are accurately connected through a precise positioning structure, preventing signal loss due to misalignment. In addition, the elastic design of the metal probe effectively prolongs the service life of the contact point, reduces wear and tear, and improves the long-term stability of the slip ring system.

[0065] The slip ring system has passed vibration tests and long-term load tests, and can adapt to high load and high frequency motion conditions of the mechanical arm without signal attenuation, loss or interference, ensuring accurate control of the robot in complex operations.

[0066] Through the design of the slip ring in this embodiment, the control system of the mechanical arm can stably receive control signals from the motor, improving the operation accuracy and response speed of the mechanical arm, and enabling more efficient automated operations in complex industrial applications.

[0067] Although this embodiment mainly targets rotating mechanical arms in robots, the slip ring system is also applicable to other types of robots, such as cobots, drones, etc., especially in scenarios where signals need to be transmitted through rotating shafts, and has broad application prospects.

[0068] The design of this slip ring system can adjust the number and configuration of metal probes and copper rings according to specific application requirements, adapting to different types of electrical signal transmission requirements, such as analog signals, digital signals, and high-frequency signals, etc.

[0069] Although embodiments of the present application have been shown and described, those skilled in the art will understand that various modifications, changes, substitutions or variations can be made to these embodiments without departing from the principles and spirit of the present application.

Claims

1. A slip ring electrical signal transmission device based on the motor-driven rotating shaft of a robot manipulator, comprising a female plate (MH01) and a male plate (GH01) arranged coaxially, characterized in that: The opposite surfaces of the female board (MH01) and the male board (GH01) are respectively provided with the same number and specifications of concentric copper rings, and the two copper rings of each group are in contact through the metal probe (TZ01), and each group of copper rings is used to transmit an electrical signal.

2. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of the robot manipulator according to claim 1, characterized in that: The metal probe (TZ01) is fixedly installed on the copper ring of the female board (MH01), and the metal probe (TZ01) comprises a mounting seat, a spring and a contact, the contact is installed in the mounting seat through the spring, and the mounting seat is fixed on the copper ring.

3. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of the robot manipulator according to claim 1, characterized in that: The back surfaces of the female board (MH01) and the male board (GH01) are provided with signal leading grooves, and the signal bus (MS21) is installed in the grooves, and the bottom of the groove is provided with a conductive perforation corresponding to the position of each copper ring.

4. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of the robot manipulator according to claim 1, characterized in that: There are four groups of copper rings, and each group of copper rings is provided with eight metal probes (TZ01) uniformly distributed.

5. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of the robot mechanical arm according to claim 3, characterized in that: The back surfaces of the female board (MH01) and the male board (GH01) are provided with three signal leading grooves, and the signal leading grooves are spaced apart by 120°. The surface is flush by installing the insulating bakelite cover plate (MG20) in the signal leading groove.

6. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of a robot manipulator according to claim 1, characterized in that: Each copper ring has an insulating isolation table on both sides.

7. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of the robot mechanical arm according to any one of claims 1-6, characterized in that: The male board (GH01) and the female board (MH01) are made of high-density bakelite, the male board (GH01) has a convex shaft (GI12), and the female board (MH01) has a central hole and is sleeved on the shaft (GI12).

8. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of the robot mechanical arm according to claim 7, characterized in that: The end surface of the shaft (GI12) is provided with a circle of counterbores.

9. The slip ring electrical signal transmission device based on the motor-driven rotating shaft of the robot manipulator according to any one of claims 1-6, characterized in that: The back surface of the female board (MH01) is provided with a circle of fixed counterbores.

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