A kind of anti-interference detection tool of stepping motor

Abstract

The utility model discloses a kind of anti-interference detection tool of stepping motor, including detection mechanism, hoisting mechanism and centering mechanism, the detection mechanism includes support frame, three power frequency interference generator connected with the support frame, hoisting mechanism, the hoisting mechanism includes the disc rack of being located in support frame front side, and the hollow net column is connected with the top of disc rack.The utility model in, chain is connected with external hoisting equipment, then when disc rack is pasted in table frame top, place the stepping motor to be detected on disc rack, then hoisting equipment is lifted by chain, hollow net column, disc rack and is lifted to the front side of multiple power frequency interference generator to stepping motor, then rotate hollow net column, can when multiple power frequency interference transmitter detect the outer surface of stepping motor comprehensively, detection result is transferred to external PLC, and external PLC obtains motor anti-interference ability according to self algorithm, both can be netted arbitrary size stepping motor, and also ensure the accuracy of detection result.

Description

Technical Field

[0001] This utility model relates to the field of immunity testing technology, specifically a stepper motor immunity testing fixture. Background Technology

[0002] Stepper motors, as actuators, are one of the key products in mechatronics and are widely used in various automated control systems. With the development of microelectronics and computer technology, the demand for stepper motors is increasing daily, and they are used in various sectors of the national economy.

[0003] Application number CN202120087819.1 discloses a radiated immunity testing device for a drive motor system in electric vehicles, including a U-shaped plate and other structures. This invention has a simple structure; the motor is clamped by a clamping assembly, which can accommodate motors of different sizes and provides good clamping effect. The drive assembly then rotates a rotating assembly, allowing for omnidirectional testing of the motor, resulting in better testing performance and ease of use. However, in practical application, while this application can clamp motors of any size, its structural design is relatively complex, leading to increased device cost. Furthermore, the large area covered by the motor's outer wall makes the detection signal easily obstructed. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A stepper motor immunity testing fixture includes a testing mechanism, a lifting mechanism, and a centering mechanism. The testing mechanism includes a support frame and three power frequency interference generators connected to the support frame. The lifting mechanism includes a plate frame located on the front side of the support frame, a hollow mesh column connected to the top of the plate frame, and two chains connected to the top of the hollow mesh column. The centering mechanism includes a pull ring connected to the bottom of the plate frame, an elastic rope connected to the bottom of the pull ring, and a rope loop connected to the bottom end of the elastic rope at the bottom of the inner cavity.

[0007] By adopting the above technical solution, the chain is connected to the external lifting equipment. Then, when the tray is attached to the top of the table frame, the stepper motor to be tested is placed on the tray. The lifting equipment then lifts the stepper motor to the front of multiple power frequency interference generators through the chain, hollow mesh column, and tray. Then, the hollow mesh column is rotated, allowing multiple power frequency interference transmitters to comprehensively detect the outer surface of the stepper motor. The detection results are transmitted to the external PLC. The external PLC calculates the motor's anti-interference capability based on its own algorithm. This method can both capture stepper motors of any size and ensure the accuracy of the detection results.

[0008] In a preferred embodiment, this utility model can be further configured such that three power frequency interference generators are located near the top, middle, and bottom of the support frame, respectively, and all three power frequency interference generators are electrically connected to an external PLC.

[0009] In a preferred embodiment, the present invention can be further configured such that the inner diameter of the hollow mesh post is larger than the diameter of the tray frame, and the mesh holes on the hollow mesh post are set to 8x8cm.

[0010] In a preferred embodiment, this invention can be further configured such that: two chains are vertically symmetrical about the vertical center plane of the hollow mesh post, and the bottom ends of the chains are fastened to the mesh holes.

[0011] In a preferred embodiment, the present invention can be further configured such that: the rope loop is suitable for storing the elastic rope, and the rope loop, the elastic rope, and the disc frame are vertically coaxial.

[0012] In a preferred embodiment, the present invention can be further configured such that: a table frame is fixedly connected to the bottom end of the support frame, and a circular opening is provided on the table frame, the diameter of which is larger than the diameter of the pull ring and smaller than the diameter of the tray frame.

[0013] In a preferred embodiment, the present invention can be further configured such that: a rubber pad is installed on the top of the tray frame, and the rubber pad is vertically coaxial with the center of the tray frame.

[0014] In a preferred embodiment, the present invention can be further configured such that: a stabilizing frame is sleeved at the bottom of the rope loop, and the top of the stabilizing frame is fixedly connected to the bottom of the disc frame.

[0015] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0016] 1. In this utility model, a chain is connected to an external lifting device. Then, when the tray is attached to the top of the table frame, the stepper motor to be tested is placed on the tray. The lifting device then lifts the stepper motor to the front of multiple power frequency interference generators via the chain, hollow mesh column, and tray. Then, the hollow mesh column is rotated, allowing multiple power frequency interference transmitters to comprehensively detect the outer surface of the stepper motor. The detection results are transmitted to an external PLC. The external PLC calculates the motor's anti-interference capability based on its own algorithm, which can both capture stepper motors of any size and ensure the accuracy of the detection results.

[0017] 2. In this utility model, when the tray is lifted, the elastic rope is vertically straightened. Under the tension of the elastic rope, the tray rises straight up, effectively preventing the tray from swaying left and right, and improving the safety and stability of the testing operation. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the testing mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the lifting mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the centering mechanism of this utility model.

[0022] Figure label:

[0023] 100. Testing agency; 110. Support frame; 120. Power frequency interference generator;

[0024] 200. Lifting mechanism; 210. Frame; 220. Hollow mesh column; 230. Chain;

[0025] 300. Centering mechanism; 310. Pull ring; 320. Elastic rope; 330. Rope loop;

[0026] 400. Table frame;

[0027] 500, rubber pad;

[0028] 600. Stable frame. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0030] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0031] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, a stepper motor disturbance immunity testing fixture.

[0032] Example 1:

[0033] Combination Figure 1-4 As shown, the present invention provides a stepper motor immunity testing fixture, including a testing mechanism 100, a lifting mechanism 200 and a centering mechanism 300. The testing mechanism 100 includes a support frame 110 and three power frequency interference generators 120 connected to the support frame 110.

[0034] The lifting mechanism 200 includes a plate frame 210 located in front of the support frame 110, a hollow mesh column 220 connected to the top of the plate frame 210, and two chains 230 connected to the top of the hollow mesh column 220.

[0035] The centering mechanism 300 includes a pull ring 310 connected to the bottom of the disc frame 210, an elastic rope 320 connected to the bottom of the pull ring 310, and a rope loop 330 connected to the bottom of the inner cavity and the bottom end of the elastic rope 320.

[0036] Furthermore, three power frequency interference generators 120 are located near the top, middle, and bottom of the support frame 110, respectively. All three power frequency interference generators 120 are electrically connected to an external PLC. The layout design of the power frequency interference generators 120 can detect the top, bottom, and middle of the stepper motor, improving the accuracy of the detection structure.

[0037] Furthermore, the inner diameter of the hollow mesh post 220 is larger than the diameter of the disk frame 210, and the mesh holes on the hollow mesh post 220 are set to 8x8cm. The size design of the hollow mesh post 220 can capture stepper motors of any size, thus improving the applicability of this device.

[0038] Furthermore, the two chains 230 are vertically symmetrical about the vertical center plane of the hollow net post 220. The bottom end of the chains 230 is fastened to the net hole. The layout design of the chains 230 can straighten the hollow net post 220, ensuring the stability of the lifting operation.

[0039] Furthermore, the rope loop 330 is suitable for storing the elastic rope 320. The rope loop 330, the elastic rope 320, and the center of the disc frame 210 are vertically coaxial. This layout design provides conditions for self-centering lifting.

[0040] Furthermore, a table frame 400 is fixedly connected to the bottom end of the support frame 110. The table frame 400 has a round opening with a diameter larger than that of the pull ring 310 and smaller than that of the tray frame 210. The round opening allows the tray frame 210 to be completely attached to the top of the table frame 400, making it convenient to place the stepper motor to be tested on the tray frame 210.

[0041] Example 2:

[0042] Combination Figure 3 As shown, based on Embodiment 1, a rubber pad 500 is installed on the top of the disk frame 210. The rubber pad 500 is vertically coaxial with the disk center of the disk frame 210. After the stepper motor output shaft passes through the disk frame 210, the rubber pad 500 plays the role of protecting the bottom of the stepper motor.

[0043] Example 3:

[0044] Combination Figure 1 and Figure 4 As shown, in the above embodiment, a stabilizing frame 600 is sleeved at the bottom of the rope loop 330, and the top of the stabilizing frame 600 is fixedly connected to the bottom of the disc frame 210. The stabilizing frame 600 can strengthen the rope loop 330 so that the rope loop 330 can firmly pull the elastic rope 320.

[0045] The working principle and usage process of this utility model are as follows: Before using this device, the chain 230 is connected to the external lifting equipment. When the lifting equipment controls the plate 210 to be attached to the top of the table frame 400 through the chain 230, the hollow mesh column 220 is spread out on the top of the table frame 400. Then, the operator places the stepper motor to be tested on the top of the plate 210. Then, the lifting equipment lifts the hollow mesh column 220, which nets the stepper motor and then suspends it in front of the three power frequency interference generators 120. During this process, the elastic rope 320 is stretched, so that the plate 210 does not sway from side to side when it rises, thus improving the stability of the testing operation. Then, the operator rotates the hollow mesh column 220, which makes the stepper motor rotate, so that the outer wall of the motor is detected by multiple power frequency interference generators 120 at the same time. The detection information is transmitted to the external PLC, and the external PLC calculates the anti-interference capability of the motor according to its own algorithm.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stepper motor immunity testing fixture, characterized in that, include: The testing mechanism (100) includes a support frame (110) and three power frequency interference generators (120) connected to the support frame (110). The lifting mechanism (200) includes a plate frame (210) located in front of the support frame (110), a hollow mesh column (220) connected to the top of the plate frame (210), and two chains (230) connected to the top of the hollow mesh column (220). Centering mechanism (300), the centering mechanism (300) includes a pull ring (310) connected to the bottom of the plate frame (210), an elastic rope (320) connected to the bottom of the pull ring (310), and a rope loop (330) connected to the bottom of the inner cavity and the bottom end of the elastic rope (320).

2. The stepper motor immunity testing fixture according to claim 1, characterized in that, Three power frequency interference generators (120) are located near the top, middle and bottom of the support frame (110) respectively, and all three power frequency interference generators (120) are electrically connected to an external PLC.

3. The stepper motor immunity testing fixture according to claim 1, characterized in that, The inner diameter of the hollow mesh post (220) is larger than the diameter of the plate frame (210), and the mesh holes on the hollow mesh post (220) are set to 8x8cm.

4. The stepper motor immunity testing fixture according to claim 3, characterized in that, Two chains (230) are vertically symmetrical about the vertical center plane of the hollow net post (220), and the bottom end of the chains (230) is fastened to the net hole.

5. The stepper motor immunity testing fixture according to claim 1, characterized in that, The rope sleeve (330) is suitable for storing the elastic rope (320), and the rope sleeve (330), elastic rope (320), and disc frame (210) are vertically coaxial.

6. The stepper motor immunity testing fixture according to claim 1, characterized in that, The bottom end of the support frame (110) is fixed to a table frame (400). The table frame (400) has a round opening with a diameter larger than that of the pull ring (310) and smaller than that of the tray frame (210).

7. The stepper motor immunity testing fixture according to claim 1, characterized in that, A rubber pad (500) is installed on the top of the tray frame (210), and the rubber pad (500) is vertically coaxial with the center of the tray frame (210).

8. The stepper motor immunity testing fixture according to claim 1, characterized in that, The bottom end of the rope loop (330) is fitted with a stabilizing frame (600), and the top of the stabilizing frame (600) is fixedly connected to the bottom of the disc frame (210).

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