Bevel gear non-contact dynamic torque sensor

Abstract

The utility model discloses a bevel gear non-contact type dynamic torque sensor, which comprises a casing, and a bevel gear shaft, a spiral bevel gear, an input shaft, an output shaft and a signal receiving ring are arranged in the casing. One end of the bevel gear shaft is connected with the input shaft; one end of the output shaft is provided with a strain gauge, and the other end is provided with a signal transmitting coil. The strain gauge is arranged on the output shaft of the spiral bevel gear, the output shaft on the spiral bevel gear is used for manufacturing the torque sensor, the signal transmitting ring and the signal receiving ring are used for achieving two-way transmission of digital signals and a power source, and the torque sensor has the advantages of being simple in structure, convenient to achieve, low in cost and small and exquisite in structure. Meanwhile, the built-in microprocessor processes the electric signals generated by the strain gauge in real time in a high-frequency and high-resolution mode, the signals of the torque sensor are output outwards in a wireless digital transmission mode, and compared with a traditional detection mode, the resolution is higher, and the frequency response is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of torque sensors, and more specifically, to a bevel gear non-contact dynamic torque sensor. Background Art

[0002] Bevel gears and bevel gear shafts are commonly used in transmission components on the market. When the torque at the output end (load end) of the bevel gear is required, the output torque of the bevel gear shaft is usually detected. However, the torque transmission efficiency is poor, resulting in low detection accuracy and slow response speed, and also increases the difficulty and cost of structural design. Utility Model Content

[0003] The present invention provides a bevel gear non-contact dynamic torque sensor to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bevel gear non-contact dynamic torque sensor, comprising a housing, wherein a bevel gear shaft, a spiral bevel gear, an input shaft, an output shaft and a signal receiving ring are arranged in the housing; one end of the bevel gear shaft is connected to the input shaft, and the other end is meshed with the spiral bevel gear; the spiral bevel gear is in transmission connection with the output shaft; one end of the output shaft is provided with a strain gauge, and the other end is provided with a signal transmitting ring, and the signal transmitting ring is arranged in coordination with the signal receiving ring; the strain gauge and the signal transmitting ring are connected by a wire, and the signal transmitting ring and the signal receiving ring are wirelessly connected; the signal transmitting ring and the signal receiving ring transmit power and data signals wirelessly.

[0004] Preferably, the signal receiving coil includes a power supply coil and a first communication coil, and the signal transmitting coil includes a power receiving coil and a second communication coil. The power supply coil and the power receiving coil are arranged in coordination with each other, and the first communication coil and the second communication coil are arranged in coordination with each other. The signal receiving coil and the signal transmitting coil are close to each other, and wireless transmission of electrical energy and data signals is achieved through magnetic field coupling.

[0005] Preferably, the signal transmitting ring is arranged around the surface of the output shaft; the cross section of the signal transmitting ring is a C-shaped structure, and both ends of the C-shaped structure are respectively arranged toward the signal transmitting ring.

[0006] Preferably, a microprocessor is further provided on the output shaft, and the microprocessor is connected to the strain gauge and the signal transmitting coil respectively; the microprocessor is used to process the electrical signal generated by the strain gauge and output the torque sensor signal through the signal transmitting coil.

[0007] Preferably, a signal processing module connected to the microprocessor is further included, the signal processing module including a compensation amplifier and an amplitude stabilization filter, the compensation amplifier is connected to the strain gauge and is used to enhance the electrical signal of the strain gauge; the amplitude stabilization filter performs amplitude stabilization and noise reduction on the enhanced electrical signal, and transmits the processed signal to the microprocessor.

[0008] Preferably, the microprocessor is an STM32 single-chip microcomputer.

[0009] Preferably, a wireless communication module is further provided in the housing, and the wireless communication module is electrically connected to the signal receiving coil.

[0010] Preferably, the wireless communication module is any one of a Bluetooth module, a ZigBee module, a WiFi module or a mobile communication module.

[0011] Compared with the existing technology, the present invention has the following advantages: by placing a strain gauge on the output shaft of a spiral bevel gear, the output shaft of the spiral bevel gear is used to create a torque sensor, and a signal transmitting coil and a signal receiving coil are used to achieve bidirectional transmission of digital signals and power. This has the advantages of simple structure, easy implementation, low cost, and compact structure. At the same time, the built-in microprocessor processes the electrical signal generated by the strain gauge in real time, at high frequency and high resolution, and outputs the torque sensor signal to the outside through wireless digital transmission. Compared with traditional detection methods, the resolution and frequency response are higher. The present invention has a reasonable design and simple structure. If the sensor fails, maintenance and replacement are more convenient and timely. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a bevel gear non-contact dynamic torque sensor according to an embodiment of the present utility model;

[0013] Figure 2 A cross-sectional view of a bevel gear contactless dynamic torque sensor according to an embodiment of the present invention;

[0014] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 A partial perspective view of a bevel gear non-contact dynamic torque sensor according to an embodiment of the present invention;

[0016] exist Figures 1 to 4 , the corresponding relationship between the names of the components and the accompanying drawing numbers is as follows:

[0017] 1--Casing, 2--Bevel gear shaft, 3--Spiral bevel gear, 4--Input shaft, 5--Output shaft, 6--Signal receiving coil, 7--Strain gauge, 8--Signal transmitting coil, 9--Wire. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are further described in detail with reference to the accompanying drawings and examples. The accompanying drawings are for reference only and are not intended to limit the scope of the present invention. The following examples are intended to illustrate the present invention but are not intended to limit the scope of the present invention.

[0019] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] Please refer to Figures 1 to 4 The utility model provides a bevel gear non-contact dynamic torque sensor, comprising a housing 1, in which a bevel gear shaft 2, a spiral bevel gear 3, an input shaft 4, an output shaft 5 and a signal receiving ring 6 are arranged; one end of the bevel gear shaft 2 is connected to the input shaft 4, and the other end is meshed with the spiral bevel gear 3; the spiral bevel gear 3 is transmission-connected to the output shaft 5; a strain gauge 7 is provided on one end of the output shaft 5, and a signal transmitting ring 8 is provided on the other end, and the signal transmitting ring 8 is matched with the signal receiving ring 6; the strain gauge 7 and the signal transmitting ring 8 are connected by a wire 9, and the signal transmitting ring 8 and the signal receiving ring 6 are wirelessly connected; the signal transmitting ring 8 and the signal receiving ring 6 transmit electrical energy and data signals wirelessly.

[0022] In this embodiment of the present invention, the signal transmitting coil serves as the signal transmitting end of the non-contact dynamic torque sensor. It is connected to the strain gauge 7 via a wire 9 and transmits the electrical signal generated by the strain gauge 7. The signal receiving coil serves as the signal receiving end of the non-contact dynamic torque sensor. It is connected to the mains or other power supply module via a cable and simultaneously transmits the collected signal via a communication cable. Magnetic field coupling between the signal transmitting coil 8 and the signal receiving coil 6 enables wireless transmission of power and data signals.

[0023] The working principle of the bevel gear non-contact dynamic torque sensor is as follows: the strain gauge 7 is installed on the output shaft 5 of the spiral bevel gear 3 and connected to the signal transmitting coil through a wired connection. The signal transmitting coil and the signal receiving coil transmit power wirelessly. At the same time, the signal transmitting coil transmits the torque sensor data through the wireless connection to the signal receiving coil.

[0024] The application scenarios of the bevel gear non-contact dynamic torque sensor are as follows: when it is necessary to detect the load torque at the output end of the bevel gear, the motor is loaded at the input shaft 4 and the load is loaded at the output shaft 5. Through the transmission between the bevel gear shaft 2 and the spiral bevel gear 3, the torque at the output end of the bevel gear can be detected using the strain gauge 7.

[0025] Preferably, the signal receiving coil 6 includes a power supply coil and a first communication coil, and the signal transmitting coil 8 includes a power receiving coil and a second communication coil. The power supply coil and the power receiving coil are arranged in coordination with each other, and the first communication coil and the second communication coil are arranged in coordination with each other. The signal receiving coil 6 and the signal transmitting coil 8 are close to each other, and wireless transmission of electrical energy and data signals is realized through magnetic field coupling.

[0026] Preferably, the signal transmitting coil 8 is disposed around the surface of the output shaft 5; the cross-section of the signal transmitting coil 8 is C-shaped, with both ends of the C-shaped structure facing the signal transmitting coil 8. With this structural arrangement, the signal transmitting coil 8 and the bevel gear shaft 2 are located at the top and bottom of the output shaft 5, respectively, creating a more rational layout, effectively reducing the overall sensor size and avoiding compromising gear transmission efficiency.

[0027] Preferably, the output shaft 5 is further provided with a microprocessor, which is connected to the strain gauge 7 and the signal transmitting coil 8, respectively. The microprocessor is configured to process the electrical signal generated by the strain gauge 7 and output the torque sensor signal via the signal transmitting coil 8. In this embodiment, the electrical signal generated by the strain gauge 7 is first digitized by the internal electronic microprocessor before being wirelessly transmitted via the signal transmitting coil 8. The signal transmitting coil 8 and the signal receiving coil 6 enable bidirectional transmission of digital signals and power.

[0028] Preferably, a signal processing module connected to the microprocessor is also included, and the signal processing module includes a compensation amplifier and an amplitude stabilization filter. The compensation amplifier is connected to the strain gauge 7 and is used to enhance the electrical signal of the strain gauge 7; the amplitude stabilization filter performs amplitude stabilization and noise reduction on the enhanced electrical signal, and transmits the processed signal to the microprocessor. In this embodiment, in order to improve the detection accuracy, the electrical signal detected by the strain gauge 7 is sent to the signal processing module for processing. The compensation amplifier is used to enhance the detection signal of the strain gauge 7, and then the amplitude stabilization filter performs amplitude stabilization and noise reduction on the detection signal, and finally the processed detection signal is sent to the microprocessor for further processing. The microprocessor digitizes the electrical signal and then sends it out wirelessly.

[0029] Preferably, the microprocessor is an STM32 single-chip microcomputer.

[0030] Preferably, a wireless communication module is further provided in the housing 1, and the wireless communication module is electrically connected to the signal receiving coil 6. In this embodiment, by providing the wireless communication module, communication with a host computer, smart terminal, or server can be achieved, and the detection status and information of the torque sensor can be remotely displayed, making the sensor wiring more streamlined.

[0031] Preferably, the wireless communication module is any one of a Bluetooth module, a ZigBee module, a WiFi module or a mobile communication module.

[0032] Compared with the existing technology, the present invention has the following advantages: by placing a strain gauge on the output shaft of a spiral bevel gear, the output shaft of the spiral bevel gear is used to create a torque sensor, and a signal transmitting coil and a signal receiving coil are used to achieve bidirectional transmission of digital signals and power. This has the advantages of simple structure, easy implementation, low cost, and compact structure. At the same time, the built-in microprocessor processes the electrical signal generated by the strain gauge in real time, at high frequency and high resolution, and outputs the torque sensor signal to the outside through wireless digital transmission. Compared with traditional detection methods, the resolution and frequency response are higher. The present invention has a reasonable design and simple structure. If the sensor fails, maintenance and replacement are more convenient and timely.

[0033] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A bevel gear non-contact dynamic torque sensor, characterized in that: The invention comprises a housing (1), wherein a bevel gear shaft (2), a spiral bevel gear (3), an input shaft (4), an output shaft (5) and a signal receiving ring (6) are arranged in the housing; one end of the bevel gear shaft is connected to the input shaft, and the other end is meshed with the spiral bevel gear; the spiral bevel gear is in driving connection with the output shaft; one end of the output shaft is provided with a strain gauge (7), and the other end is provided with a signal transmitting ring (8), and the signal transmitting ring is arranged in coordination with the signal receiving ring; the strain gauge and the signal transmitting ring are connected via a wire (9), and the signal transmitting ring and the signal receiving ring are wirelessly connected; the signal transmitting ring and the signal receiving ring transmit electric energy and data signals wirelessly.

2. The bevel gear non-contact dynamic torque sensor according to claim 1, characterized in that: The signal receiving coil includes a power supply coil and a first communication coil, and the signal transmitting coil includes a power receiving coil and a second communication coil. The power supply coil and the power receiving coil are arranged in coordination with each other, and the first communication coil and the second communication coil are arranged in coordination with each other. The signal receiving coil and the signal transmitting coil are close to each other, and wireless transmission of electrical energy and data signals is achieved through magnetic field coupling.

3. The bevel gear non-contact dynamic torque sensor according to claim 2, characterized in that: The signal transmitting ring is arranged around the surface of the output shaft; the cross section of the signal transmitting ring is a C-shaped structure, and the two ends of the C-shaped structure are respectively arranged toward the signal transmitting ring.

4. The bevel gear non-contact dynamic torque sensor according to claim 1, characterized in that: A microprocessor is also provided on the output shaft, and the microprocessor is connected to the strain gauge and the signal transmitting coil respectively; the microprocessor is used to process the electrical signal generated by the strain gauge and output the torque sensor signal through the signal transmitting coil.

5. The bevel gear non-contact dynamic torque sensor according to claim 4, characterized in that: The system further includes a signal processing module connected to the microprocessor, the signal processing module including a compensation amplifier and an amplitude stabilization filter. The compensation amplifier is connected to the strain gauge and is used to enhance the electrical signal of the strain gauge; the amplitude stabilization filter stabilizes the amplitude and reduces noise of the enhanced electrical signal, and transmits the processed signal to the microprocessor.

6. The bevel gear non-contact dynamic torque sensor according to claim 4, characterized in that: The microprocessor is an STM32 single chip microcomputer.

7. The bevel gear non-contact dynamic torque sensor according to any one of claims 1 to 6, characterized in that: A wireless communication module is also provided in the housing and is electrically connected to the signal receiving coil.

8. The bevel gear non-contact dynamic torque sensor according to claim 7, characterized in that: The wireless communication module is any one of a Bluetooth module, a ZigBee module, a WiFi module or a mobile communication module.

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