Servo torque angle measuring device

Abstract

The utility model discloses a servo torque angle measuring device, which comprises an angle measuring device body, a top support plate and a bottom support plate are respectively arranged at two ends of an installation fixing plate on the angle measuring device body, and a speed reducer and a servo motor are arranged in the center above the top support plate. A torsion bar A, a torque sensor, a torsion bar B, an angle sensor, a coupler and a connecting shaft piece are arranged between the top support plate and the bottom support plate, the coupler and a rotating shaft of the gear motor are installed in a matched mode, a bottom fixing base plate is arranged above the bottom support plate, and a product butt joint shaft is arranged below the bottom support plate. The upper servo motor of the angle measuring device drives the lower product to rotate through the upper connecting shaft and the lower connecting shaft, the rotating torque value and the angle value of the product are tested through the middle torque sensor and the angle encoder during rotation, the detection speed of the product is high, and the precision of detected data is high.

Description

Technical Field

[0001] The utility model relates to the technical field of servo torque angle measurement, and specifically relates to a servo torque angle measurement device. Background Art

[0002] At present, an electric power steering system controls the output of an assist motor according to the signals output by a steering wheel torque sensor and the vehicle speed signal. Due to advantages such as high precision, high reliability, and long service life, non-contact steering wheel torque sensors have become the development trend of electric power steering torque sensors.

[0003] Non-contact torque sensors can be further divided into electromagnetic, inductive, photoelectric, etc. The principle of a photoelectric steering wheel torque sensor is simple, but its production and manufacturing are difficult. The structure of an electromagnetic steering wheel torque sensor is relatively simple and has high sensitivity, but it requires a dedicated signal generation and processing circuit, and the signal is easily interfered with.

[0004] For the strain measurement of a rotating member of a current collecting device for torque measurement, such as a rotating shaft, the problem of signal transmission needs to be solved. The strain gauges and bridge wires pasted on the rotating member rotate with the rotating member, while measuring and recording instruments such as strain gauges are fixed.

[0005] After searching the prior art, it is found that the Chinese invention patent publication number is CN 103486965A, which discloses a device for measuring steering angle and torque. The device includes a middle shell. The feature is that an input mechanism is provided on one side of the middle shell, and the input mechanism is fixedly connected to the middle shell. An output mechanism is provided on the other side of the middle shell, and the output mechanism is fixedly connected to the middle shell. The output mechanism includes a steering angle measurement mechanism and a torque measurement mechanism. Both the steering angle measurement mechanism and the torque measurement mechanism are fixedly connected to the middle shell. The input mechanism is connected to an input shaft, and the output mechanism is connected to an output shaft. The steering angle of the vehicle is measured by the steering angle measurement mechanism, and the torque during steering is measured by the torque measurement mechanism. Compared with the prior art, the beneficial effect of the present invention is that it can be applied to an electric power steering system to detect the rotation angle of the steering wheel and the input torque. It is not only simple in structure, convenient to install, but also low in cost, and has high reliability and accuracy. However, the mechanical structure of this device is relatively complex, and moreover, the detection efficiency needs to be improved. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a servo torque angle measuring device. At both ends of the mounting fixing plate installed on the angle measuring device body, there are respectively a top support plate and a bottom support plate. In the center above the top support plate, there are a speed reducer and a servo motor. Between the top support plate and the bottom support plate, there are a torsion bar A, a torque sensor, a torsion bar B, an angle sensor, a coupling, and a shaft connecting member. The coupling is installed in cooperation with the rotating shaft of the reduction motor. Above the bottom support plate, there is a bottom fixing substrate, and below the bottom support plate, there is a product docking shaft. The upper servo motor of this angle measuring device drives the product to rotate through an upper and lower connecting shaft. When rotating, the rotating torque value of the product is tested through an intermediate torque sensor and an angle encoder. The servo torque angle measuring device has a fast detection speed for the product and high-precision detected data, so as to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present utility model provides the following technical solution: A servo torque angle measuring device, including an angle measuring device body, on which there is a mounting fixing plate. On one side of both ends of the mounting fixing plate, there are respectively a top support plate and a bottom support plate. The top support plate and the bottom support plate are both fixedly installed perpendicular to one side surface of the mounting fixing plate.

[0008] Between the top support plate and the bottom support plate, there are a coupling, a torsion bar A, a torque sensor, a torsion bar B, an angle sensor, and a shaft connecting member. The coupling, torsion bar A, torque sensor, torsion bar B, angle sensor, and shaft connecting member are sequentially installed in cooperation from top to bottom.

[0009] Preferably, triangular connecting members are provided in cooperation between the top support plate, the bottom support plate and the mounting fixing plate.

[0010] Preferably, a positioning mounting block is provided in cooperation between the outside of the torque sensor and the mounting fixing plate.

[0011] Preferably, a speed reducer and a servo motor are provided in cooperation above the top of the mounting fixing plate. The speed reducer is fixedly installed on the top of the top support plate and is installed in cooperation with the coupling at the same time.

[0012] Preferably, a cooperating mounting rod is provided in cooperation between the outside of the angle sensor and the mounting fixing plate.

[0013] Preferably, a bottom fixing substrate is provided on the upper surface of the bottom support plate. The bottom fixing substrate is fixedly installed with the bottom support plate by screws and is installed in cooperation with the shaft connecting member. Below the bottom support plate, there is a product docking shaft, and the product docking shaft is installed in cooperation with the shaft connecting member.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] (1) A triangular connecting piece is cooperatively arranged between the top support plate, the bottom support plate and the mounting fixing plate. The triangular connecting piece is used to connect the top support plate, the bottom support plate and the mounting fixing plate, and utilizes the stability characteristics of the triangle to reinforce the support of the main body of the equipment and improve the stability of the main body support of the equipment;

[0016] (2) The speed reducer is used to control the speed of the servo motor, so that the servo motor can reduce the speed to a stable speed regardless of the speed situation, enabling the detection equipment to stably detect the servo torque angle;

[0017] (3) A cooperating mounting rod is cooperatively arranged between the outside of the angle sensor and the mounting fixing plate. The angle sensor detects the angle change occurring in the torque direction;

[0018] (4) The upper servo motor of this angle measuring device drives the product to rotate through the upper and lower connecting shafts. When rotating, the rotation torque value and angle value of the product are tested through the intermediate torque sensor and angle encoder. The detection speed of the product is fast, the detected data accuracy is high, and the structure of the detector is simple. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the angle measuring device of the present utility model;

[0020] Figure 2 It is a front view of the angle measuring device of the present utility model;

[0021] Figure 3 It is a side view of the angle measuring device of the present utility model.

[0022] In the figure: 1. Angle measuring device body; 2. Mounting fixing plate; 3. Top support plate; 4. Positioning mounting block; 5. Speed reducer; 6. Servo motor; 7. Torque rod A; 8. Torque sensor; 9. Torque rod B; 10. Angle sensor; 11. Bottom fixing substrate; 12. Bottom support plate; 13. Coupling; 14. Product docking shaft; 15. Shaft connecting piece. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-3, the present utility model provides a technical solution: a servo torque angle measuring device, including an angle measuring device body 1, on which there is an installation fixing plate 2. On one side of the two ends of the installation fixing plate 2, there are respectively a top support plate 3 and a bottom support plate 12. The top support plate 3 and the bottom support plate 12 are both fixedly installed perpendicular to one side surface of the installation fixing plate 2. A triangular connecting piece is provided between the top support plate 3, the bottom support plate 12 and the installation fixing plate 2. The triangular connecting piece is used to connect the top support plate 3, the bottom support plate 12 and the installation fixing plate 2. By utilizing the stability characteristics of a triangle, the bracket of the main body of the device is strengthened, and the stability of the main body bracket of the device is improved.

[0025] Between the top support plate 3 and the bottom support plate 12, there are a coupling 13, a torsion rod A 7, a torque sensor 8, a torsion rod B 9, an angle sensor 10, and a coupling member 15. The coupling 13, the torsion rod A 7, the torque sensor 8, the torsion rod B 9, the angle sensor 10, and the coupling member 15 are sequentially installed in cooperation from top to bottom. The torque sensor 8 obtains torque data by detecting the relative torque between the upper and lower torsion rods A 7 and the torsion rod B 9.

[0026] Between the outside of the torque sensor 8 and the installation fixing plate 2, there is a positioning installation block 4. The positioning installation block 4 is in the shape of a square column. One end of the positioning installation block 4 is fixedly installed on one side surface of the installation fixing plate 2. By restricting the rotation of the torque sensor 8 through the positioning installation block 4, the stability of the torque sensor 8 is ensured without movement.

[0027] Above the top of the installation fixing plate 2, there are a reducer 5 and a servo motor 6 in cooperation. The reducer 5 is fixedly installed on the top of the top support plate 3 and is also installed in cooperation with the coupling 13. The reducer 5 is used to control the rotation speed of the servo motor 6, so that the servo motor 6 can reduce the speed to a stable speed regardless of the speed situation, enabling the detection device to stably detect the servo torque angle. Between the outside of the angle sensor 10 and the installation fixing plate 2, there is a cooperating installation rod. The angle sensor 10 detects the angle change occurring in the torque direction.

[0028] On the upper surface of the bottom support plate 12, there is a bottom fixing substrate 11. The bottom fixing substrate 11 is fixedly installed with the bottom support plate 12 by screws. The bottom fixing substrate 11 is installed in cooperation with the coupling member 15. Below the bottom support plate 12, there is a product docking shaft 14. The product docking shaft 14 is installed in cooperation with the coupling member 15. The product docking shaft 14 is connected to an external product to be detected.

[0029] Detection process: The product to be detected is connected in a mating manner with the product docking shaft 14 at the bottom of the angle measuring device body 1. While the servo motor 6 is driving, the speed reducer 5 adjusts the speed of the servo motor 6 to make the speed of the servo motor 6 stable at a stable speed frequency. Driven by the rotating shaft of the speed reducer 5, the torsion bar A 7 and the torsion bar B 9 rotate. The servo motor 6 ultimately indirectly drives the product docking shaft 14 to rotate, and the product docking shaft 14 drives the connected product to twist. At the same time, the torque sensor 8 detects the magnitude of the torque data of the torsion bar B 9. On the angle measuring device body 1, the servo motor 6 drives the lower product connected below the product docking shaft 14 to rotate through the lower torsion bar A 7 and the torsion bar B 9. When rotating, the rotational torque value and the angle value of the product are tested through the intermediate torque sensor 8 and the angle sensor 10. The detection speed of the product is fast, the detected data accuracy is high, and the structure of the detector is simple.

[0030] Embodiment 1,

[0031] The product to be detected is connected in a mating manner with the product docking shaft 14 at the bottom of the angle measuring device body 1. While the servo motor 6 is driving, the speed reducer 5 adjusts the speed of the servo motor 6 to make the speed of the servo motor 6 stable at a stable speed frequency. Driven by the rotating shaft of the speed reducer 5, the torsion bar A 7 and the torsion bar B 9 rotate. The servo motor 6 ultimately indirectly drives the product docking shaft 14 to rotate, and the product docking shaft 14 drives the connected product to twist. At the same time, the torque sensor 8 detects the magnitude of the torque data of the torsion bar B 9. On the angle measuring device body 1, the servo motor 6 drives the lower product connected below the product docking shaft 14 to rotate through the lower torsion bar A 7 and the torsion bar B 9. When rotating, the rotational torque value and the angle value of the product are tested through the intermediate torque sensor 8 and the angle sensor 10. The upper servo motor 6 applies different torsion magnitudes to the product connected in a mating manner below the product docking shaft 14 by rotating different angles. Each time the upper servo motor 6 changes the torsion magnitude, the value of the current torsion magnitude is read.

[0032] The upper servo motor of this angle measuring device drives the lower product to rotate through the upper and lower connecting shafts. When rotating, the rotational torque value and the angle value of the product are tested through the intermediate torque sensor and the angle encoder. The detection speed of the product is fast, and the detected data accuracy is high.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A servo torque angle measuring device, comprising an angle measuring device body (1), characterized in that: An installation fixed plate (2) is provided on the angle measuring device body (1). On one side of the two ends of the installation fixed plate (2), a top support plate (3) and a bottom support plate (12) are respectively provided. The top support plate (3) and the bottom support plate (12) are fixedly installed perpendicular to one side surface of the installation fixed plate (2). A coupling (13), a torsion bar A (7), a torque sensor (8), a torsion bar B (9), an angle sensor (10), and a coupling member (15) are provided between the top support plate (3) and the bottom support plate (12). The coupling (13), the torsion bar A (7), the torque sensor (8), the torsion bar B (9), the angle sensor (10), and the coupling member (15) are sequentially and cooperatively installed from top to bottom.

2. The servo torque angle measuring device according to claim 1, wherein: Triangular connecting members are cooperatively provided between the top support plate (3), the bottom support plate (12) and the installation fixed plate (2).

3. A servo torque angle measuring device according to claim 1, characterized in that: A positioning installation block (4) is cooperatively provided between the outside of the torque sensor (8) and the installation fixed plate (2).

4. A servo torque angle measuring device according to claim 1, wherein: A speed reducer (5) and a servo motor (6) are cooperatively provided above the top of the installation fixed plate (2). The speed reducer (5) is fixedly installed on the top of the top support plate (3) and is cooperatively installed with the coupling (13) at the same time.

5. A servo torque angle measuring device according to claim 1, characterized in that: A cooperating installation rod is cooperatively provided between the outside of the angle sensor (10) and the installation fixed plate (2).

6. The servo torque angle measuring device according to claim 1, wherein: A bottom fixed substrate (11) is provided on the upper surface of the bottom support plate (12). The bottom fixed substrate (11) is fixedly installed with the bottom support plate (12) by screws. The bottom fixed substrate (11) is cooperatively installed with the coupling member (15). A product docking shaft (14) is provided below the bottom support plate (12). The product docking shaft (14) is cooperatively installed with the coupling member (15).

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