Novel non-contact transmission testing mechanism

Abstract

The utility model discloses a novel non-contact transmission test mechanism, a servo motor is rotatably connected with an inner magnet of a coupling, the inner magnet of the coupling is in magnetic coupling connection with an outer magnet of the coupling, the outer magnet of the coupling is arranged on a motor rotating shaft and is rotatably connected with the motor rotating shaft, and the motor rotating shaft is electrically connected with a PCB (printed circuit board) of the motor. The magnetic coupling is simple in structure, the coupling is divided into the inner magnet and the outer magnet, the inner magnet and the outer magnet can be installed at the connecting shaft end and the connected shaft end respectively before being integrally assembled and then are installed and drawn close together, installation can be achieved even in a narrow space, and the inner magnet and the outer magnet of the coupling transmit power through magnetic coupling. The problem that loading and unloading are difficult due to narrow space in a test system is solved, power loss in the rotating process is reduced, and the problem of power transmission in part of special test environments is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of transmission testing, and in particular to a novel non-contact transmission testing mechanism. Background Technology

[0002] Currently, contact couplings are the most widely used power transmission mechanisms in various equipment. Depending on the requirements, they are designed as various rigid and flexible couplings. However, the drawbacks of this type of coupling include:

[0003] 1. The connecting shaft and the shaft being connected must be installed and removed simultaneously in the same position. If the space is small, installation and removal will be difficult.

[0004] 2. It requires high precision in alignment, is difficult to process, has high frictional resistance during rotation, and also results in high power loss.

[0005] 3. The connecting shaft and the connected shaft are in contact with each other and cannot be completely isolated.

[0006] Non-contact magnetic couplings are a good solution to overcome the above-mentioned drawbacks, especially in testing equipment that requires higher testing accuracy. Utility Model Content

[0007] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0008] In view of the problems existing in the above-mentioned power transmission mechanism, this utility model is proposed.

[0009] Therefore, the purpose of this utility model is to provide a novel non-contact transmission testing mechanism to solve the problems of existing power transmission mechanisms that require the connecting shaft and the connected shaft to be loaded and unloaded at the same position simultaneously, have high alignment requirements, are difficult to process, have high frictional resistance and power loss during rotation, and have a contact connection between the connecting shaft and the connected shaft that cannot be completely isolated.

[0010] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel non-contact transmission testing mechanism, comprising a servo motor, an inner magnet of a coupling, an outer magnet of a coupling, a motor shaft, a PCB board of the motor, and a test docking probe; the servo motor is rotatably connected to the inner magnet of the coupling, the inner magnet of the coupling is magnetically coupled to the outer magnet of the coupling, the outer magnet of the coupling is disposed on the motor shaft and rotatably connected to the motor shaft, and the motor shaft is electrically connected to the PCB board of the motor.

[0011] As a preferred embodiment of the novel non-contact transmission testing mechanism described in this utility model, the test docking probe is brought into contact with the PCB board interface of the motor before product testing.

[0012] As a preferred embodiment of the novel non-contact transmission testing mechanism described in this utility model, it further includes a set of encoders, which are mounted on the motor shaft and connected to the motor shaft for measuring the rotational speed and displacement of the motor shaft.

[0013] As a preferred embodiment of the novel non-contact transmission testing mechanism described in this utility model, the encoders are arranged in descending order of measurement accuracy requirements, including two encoders, one encoder, and no encoder.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a novel non-contact transmission testing mechanism with a simple structure. The coupling is divided into two parts: an inner magnet and an outer magnet. These parts can be installed separately on the connecting shaft and the shaft being connected before overall assembly, and then brought together. It can be installed even in a narrow space. The inner and outer magnets of the coupling transmit power through magnetic coupling, which solves the difficulty of loading and unloading caused by the narrow space in the testing system, reduces power loss during rotation, and solves the power transmission problem in some special testing environments. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 A schematic diagram of the overall structure of the novel non-contact transmission testing mechanism provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] In the diagram:

[0019] 1-Servo motor, 2-Inner magnet of coupling, 3-Outer magnet of coupling, 4-Encoder, 5-Motor shaft, 6-Motor PCB board, 7-Test docking probe. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0023] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0024] Example

[0025] Currently, contact couplings are the most widely used power transmission mechanisms in various equipment. Depending on the requirements, they are designed as various rigid and flexible couplings. However, the drawbacks of this type of coupling include:

[0026] 1. The connecting shaft and the shaft being connected must be installed and removed simultaneously in the same position. If the space is small, installation and removal will be difficult.

[0027] 2. It requires high precision in alignment, is difficult to process, has high frictional resistance during rotation, and also results in high power loss.

[0028] 3. The connecting shaft and the connected shaft are in contact with each other and cannot be completely isolated.

[0029] Therefore, refer to Figure 1 This utility model provides a novel non-contact transmission testing mechanism, including a servo motor 1, an inner magnet 2 of a coupling, an outer magnet 3 of a coupling, a motor shaft 5, a motor PCB board 6, and a test docking probe 7; the servo motor 1 is rotatably connected to the inner magnet 2 of the coupling, the inner magnet 2 of the coupling is magnetically coupled to the outer magnet 3 of the coupling, the outer magnet 3 of the coupling is disposed on the motor shaft 5 and is rotatably connected to the motor shaft 5, and the motor shaft 5 is electrically connected to the motor PCB board 6.

[0030] Furthermore, the test docking probe 7 is brought into contact with the interface of the motor's PCB board 6 in advance.

[0031] Furthermore, it also includes a set of encoders 4, which are mounted on the motor shaft 5 and connected to the motor shaft 5 for measuring the speed and displacement of the motor shaft 5.

[0032] Furthermore, the encoder 4 is configured according to the measurement accuracy requirements, ranging from two encoders 4, one encoder 4, to no encoder 4.

[0033] It should be noted that:

[0034] The inner magnet of the magnetic coupling is connected to one end of the drive shaft, and the outer magnet is connected to the other end of the drive shaft. The two parts are connected by magnetic coupling for transmission. Even with large radial and angular displacement deviations, there is no frictional resistance loss, enabling highly efficient and precise transmission.

[0035] Even if the load resistance increases, the prime mover motor will not be burned out due to non-contact slippage. In addition, an encoder can be set at the load end for more accurate measurement of displacement and speed.

[0036] Torque transmission is achieved through non-contact connection between inner and outer magnets, isolating the inner and outer magnets. Even if the inner magnet is encased in a special test environment where it is not suitable for human contact, transmission tests can still be performed.

[0037] Because the inner and outer magnets are connected in a non-contact manner for power transmission, the inner and outer magnets of the magnetic coupling can be installed in advance, so power can be transmitted even in small spaces where it is difficult for people to access them.

[0038] During use, the servo motor (1) is powered on and rotates, driving the inner magnet (2) of the coupling to rotate. The outer magnet (3) of the magnetic coupling also rotates synchronously. Since the outer magnet (3) of the coupling is mounted on the shaft (5) of the motor under test, the shaft (5) of the motor under test also rotates synchronously. The PCB board (6) of the motor starts to work. Since the test docking probe (7) has made contact with the interface of the PCB board (6) of the motor in advance, the product test begins. In order to measure the speed and displacement of the motor under test more accurately, an encoder (4) is set on the shaft (5) of the motor under test. If the test requirements are not high, the encoder (4) can be removed.

[0039] It should be noted that an encoder is a rotary sensor that converts rotary displacement into a series of digital pulse signals. The number of pulses indicates the magnitude of the displacement. An encoder is a type of sensor and is currently a relatively mature product. Different accuracy levels of sensors can be selected according to the testing requirements. An encoder is set here because the magnetic coupling is disconnected in the middle to avoid overload slippage that could affect the measurement results such as rotational speed.

[0040] An encoder is a device that converts rotary or linear displacement into electrical signals. Its working process is generally as follows:

[0041] 1. Physical quantity input: The encoder receives physical quantities such as displacement and angle generated by mechanical motion.

[0042] 2. Detection and Conversion: Through internal detection elements, such as photoelectric sensors and magnetic sensors, changes in physical quantities are converted into changes in electrical signals.

[0043] 3. Encoding output: The detected electrical signal is encoded according to specific encoding rules. Common encoding methods include absolute encoding and incremental encoding.

[0044] Absolute encoder: Each position corresponds to a unique code, which can directly determine the current absolute position.

[0045] Incremental encoder: The output is a pulse signal of relative displacement, and the displacement is determined by counting the pulses.

[0046] 4. Signal transmission: The encoded electrical signal is transmitted to subsequent processing equipment, such as controllers and computers.

[0047] 5. Data processing: The receiving end processes and interprets the signals transmitted from the encoder to obtain accurate information such as position and speed, which is then used for the operation and decision-making of the control system.

[0048] This utility model provides a novel non-contact transmission testing mechanism with a simple structure. The coupling consists of two parts: an inner magnet and an outer magnet. These parts can be installed separately on the connecting shaft and the shaft being connected before overall assembly, and then brought together. This allows for installation even in confined spaces. The inner and outer magnets of the coupling transmit power through magnetic coupling, solving the difficulties in loading and unloading caused by limited space in the testing system, reducing power loss during rotation, and solving power transmission problems in some special testing environments.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A novel non-contact transmission testing mechanism, characterized in that: The system includes a servo motor (1), an inner magnet (2) of a coupling, an outer magnet (3) of a coupling, a motor shaft (5), a PCB board (6) of the motor, and a test docking probe (7). The servo motor (1) is rotatably connected to the inner magnet (2) of the coupling, and the inner magnet (2) of the coupling is magnetically coupled to the outer magnet (3) of the coupling. The outer magnet (3) of the coupling is mounted on the motor shaft (5) and is rotatably connected to the motor shaft (5). The motor shaft (5) is electrically connected to the PCB board (6) of the motor.

2. The novel non-contact transmission testing mechanism as described in claim 1, characterized in that: Before product testing, the test docking probe (7) is brought into contact with the interface of the PCB board (6) of the motor.

3. The novel non-contact transmission testing mechanism as described in claim 2, characterized in that: It also includes a set of encoders (4), which are set on the motor shaft (5) and connected to the motor shaft (5) for measuring the rotational speed and displacement of the motor shaft (5).

4. The novel non-contact transmission testing mechanism as described in claim 3, characterized in that: The encoders (4) are arranged in order of decreasing measurement accuracy, with 2 encoders (4), 1 encoder (4), and no encoder (4).

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