Motor control circuit board detection device

Abstract

The utility model discloses a detection device for a motor control circuit board. The detection device is characterized by comprising a mounting seat plate, a hysteresis brake, a motor transmission assembly, a motor mounting seat and a control device. A display is arranged on the control device, and the control device controls the hysteresis brake to work. The hysteresis brake is fixedly arranged on the left portion of the installation base plate, and an output shaft of the hysteresis brake is arranged in the left-right direction and extends rightwards. The motor mounting base is detachably and fixedly mounted on the right portion of the mounting base plate, and the motor is fixedly arranged on the motor mounting base. An output shaft of the hysteresis brake is in transmission connection with a motor shaft of the motor through the motor transmission assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tool detection, in particular to a detection device used for detecting a motor control circuit board. Background Art

[0002] A power tool is a handheld or portable mechanized tool powered by an electric motor and driven by a transmission mechanism. Power tools are easy to carry, simple to operate, and versatile, making them widely used in construction, home improvement, automotive, machinery, electricity, bridge construction, gardening, and other fields. Brushless DC motors offer long lifespans and stable speed and current. Currently, an increasing number of power tools are powered by brushless DC motors, controlled by corresponding motor control circuit boards. Once a brushless DC motor stalls, the stator current increases dramatically, and the stator voltage is fully applied to the stator windings. This condition can cause burnout if left unchecked for extended periods. Therefore, a motor control circuit board must be optimally matched to the brushless DC motor to ensure it stops operating promptly when an anomaly occurs. Chinese patent document CN220040614U discloses a "DC brushless intelligent test bench," comprising a test bench with a control panel and control display lights mounted on its observation surface. Multiple test stations are mounted on its work surface. Each test station is equipped with an installation station for mounting a module to be tested, a high-current contact mechanism, and a drive mechanism. The installation station and the module to be tested on the installation station are electrically connected to the high-current contact mechanism, and the drive mechanism is retractably connected to a test rod head. This structure efficiently and automatically detects the module to be tested by plugging it into the test station, monitoring and testing it using the control panel, simulating the working conditions using the high-current contact mechanism and the drive mechanism, and controlling the switches. This improves efficiency, reduces judgment errors, and increases product yield. This structure cannot detect whether a brushless DC motor is compatible with the motor control circuit, or simulate whether the set parameters of the brushless DC motor and the motor control circuit are consistent under different loads. Utility Model Content

[0003] The utility model aims to provide a detection device which has a simple structure and is convenient for detecting whether a brushless DC motor matches a motor control circuit.

[0004] The basic technical solution for achieving the objectives of this utility model is a motor control circuit board testing device, characterized by comprising a mounting base, a hysteresis brake, a motor transmission assembly, a motor mounting base, and a control device. The control device is equipped with a display and controls the operation of the hysteresis brake. The hysteresis brake is fixed to the left portion of the mounting base, and its output shaft is arranged in a left-right direction, extending to the right.

[0005] The motor mounting seat is detachably fixedly mounted on the right portion of the mounting seat plate, and the motor is fixedly arranged on the motor mounting seat. The output shaft of the hysteresis brake is transmission-connected to the motor shaft of the motor through the motor transmission assembly.

[0006] Furthermore, to facilitate installation and removal and improve efficiency, the motor mounting base is provided with a motor mounting hole, the cross-sectional shape of which corresponds to the outer contour of the motor to be tested. This allows the corresponding motor mounting base to be selected and replaced according to the motor specifications.

[0007] Furthermore, in order to facilitate installation and disassembly and improve efficiency, the motor transmission assembly includes a transmission shaft, and a motor shaft mounting hole is provided at the right end of the transmission shaft. The motor shaft of the motor is inserted into the motor shaft mounting hole of the transmission shaft to form a transmission matching connection.

[0008] Furthermore, to detect the actual motor speed, a speed measuring device is also included. The speed measuring device includes a speed measuring plate, a Hall effect sensor, and a Hall effect detection probe. The speed measuring plate is coaxially fixed to the right end of the transmission shaft, the Hall effect sensor is fixed to the speed measuring plate, and the Hall effect detection probe is fixed to the mounting base plate and cooperates with the Hall effect sensor.

[0009] The present invention has the following beneficial effects: (1) The motor control circuit board detection device of the present invention has a simple structure. By applying a load to the motor to be detected through a hysteresis brake, it can accurately reflect the actual working condition of the motor, detect parameters such as motor speed, overcurrent, and low voltage protection value, and thus determine whether the motor matches the motor control circuit. (2) The motor mounting seat of the motor control circuit board detection device of the present invention is detachably fixed on the mounting seat plate and can be replaced according to different motors to be detected, greatly improving the scope of application. The motor mounting seat is provided with a motor mounting hole. When the motor is inserted into the motor mounting hole, the motor is limited and fixed in the circumferential direction. The installation is quick and efficient, which is conducive to improving the detection efficiency. (3) The motor control circuit board detection device of the present invention is provided with a speed measuring device, which can accurately reflect the actual speed of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram of the motor control circuit board detection device of the present utility model.

[0011] Figure 2 for Figure 1 Schematic top view of .

[0012] Figure 3 for Figure 1 Schematic diagram of the right side.

[0013] Figure 4 for Figure 1 Schematic diagram after removing the motor to be tested.

[0014] Figure 5 For Figure 1 Schematic diagram when viewed from the upper right front.

[0015] Figure 6 For Figure 1 Schematic diagram after removing the motor to be tested when observing from the upper right front of the device.

[0016] Figure 7 For Figure 1 Schematic diagram after removing the motor to be tested when observing from the upper left front of the device.

[0017] The reference numerals in the accompanying drawings are:

[0018] Install the seat plate 1,

[0019] Hysteresis brake 2,

[0020] Motor transmission assembly 3, transmission shaft 3-1, motor shaft mounting hole 3-11, transmission shaft seat 3-2, coupling 3-3,

[0021] Motor mounting seat 4, motor mounting hole 4-1,

[0022] Speed ​​measuring device 5, speed measuring plate 5-1, Hall sensor 5-2,

[0023] Motor 10, motor shaft 10-1. DETAILED DESCRIPTION

[0024] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings. Figure 1 The direction shown is carried out, that is, Figure 1 The up, down, left, and right directions shown are the up, down, left, and right directions described. Figure 1 The direction is forward, away from Figure 1 The rear side is the opposite side. In the description of this utility model, the terms "first" and "second" are used solely for distinction and should not be construed as indicating or implying relative importance. Terms such as "upper," "lower," "inner," and "outer" indicate directions or positional relationships based on the positional relationships depicted in the accompanying drawings and are intended solely to facilitate or simplify the description of this utility model. They do not necessarily indicate a specific orientation.

[0025] (Example 1)

[0026] See Figures 1 to 7The motor control circuit board detection device of the present invention includes a mounting base plate 1, a hysteresis brake 2, a motor transmission assembly 3, a motor mounting base 4, a speed measuring device 5 and a control device. The control device is a prior art, and a display is provided on the control device. The control device provides the power required for the motor 10 to work, controls the operation of the hysteresis brake 2, and displays the corresponding current, voltage, speed and other information when the motor 10 to be tested is working. The hysteresis brake 2 is fixedly set on the left part of the mounting base plate 1, and its output shaft is set in the left and right directions and extends to the right. The motor transmission assembly 3 includes a transmission shaft 3-1, a transmission shaft seat 3-2 and a coupling 3-3. The transmission shaft seat 3-2 is fixedly set on the middle part of the mounting base plate 1, and the transmission shaft 3-1 is rotatably set on the transmission shaft seat 3-2. The transmission shaft 3-1 is connected to the output shaft of the hysteresis brake 2 through the coupling 3-3. The right end of the transmission shaft 3-1 is provided with a motor shaft mounting hole 3-11. The motor mounting base 4 is detachably fixed on the right side of the mounting base plate 1. The motor mounting base 4 is provided with a motor mounting hole 4-1. The cross-sectional shape of the motor mounting hole 4-1 corresponds to the outer contour of the motor 10 to be tested, so that when the motor 10 is inserted into the motor mounting hole 4-1, the motor 10 is circumferentially limited and fixed. The speed measuring device 5 includes a speed measuring plate 5-1, a Hall sensor 5-2, and a Hall detection probe. The speed measuring plate 5-1 is coaxially fixed on the right end of the transmission shaft 3-1. The Hall sensor 5-2 is fixed on the speed measuring plate 5-1. The Hall detection probe (not shown in the figure) is fixed on the mounting base plate 1 and cooperates with the Hall sensor 5-2 to obtain the rotational speed of the speed measuring plate 5-1, that is, it is used to detect the rotational speed of the transmission shaft 3-1 and obtain the rotational speed of the motor 10. The Hall detection probe is electrically connected to the control device.

[0027] When the motor control circuit board detection device of the present invention is used, the motor mounting base 4 of the corresponding motor 10 is fixed to the right part of the mounting base plate 1, the motor 10 is inserted into the motor mounting hole 4-1 of the motor mounting base 4, and the motor shaft 10-1 of the motor 10 is inserted into the motor shaft mounting hole 3-11 of the transmission shaft 3-1 to form a transmission connection with the transmission shaft 3-1. Then, the control device is electrically connected to the motor control circuit to be detected to control the motor 10 to operate. At the same time, the control device controls the operation of the hysteresis brake 2. The direction of operation of the hysteresis brake 2 is opposite to the direction of operation of the motor shaft of the motor 10, thereby generating corresponding resistance. Therefore, the corresponding current, voltage and speed of the motor 10 during operation can be displayed by the control device, so as to judge whether the parameters of the current motor 10 and the motor control circuit to be detected match and meet the design requirements.

[0028] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor control circuit board detection device, characterized in that: The invention comprises a mounting base plate (1), a hysteresis brake (2), a motor transmission assembly (3), a motor mounting base (4) and a control device; the control device is provided with a display, and the operation of the hysteresis brake (2) is controlled by the control device; the hysteresis brake (2) is fixedly arranged on the left part of the mounting base plate (1), and its output shaft is arranged in the left-right direction and extends to the right; The motor mounting seat (4) is detachably fixedly mounted on the right portion of the mounting seat plate (1), and the motor (10) is fixedly arranged on the motor mounting seat (4); the output shaft of the hysteresis brake (2) is transmission-connected to the motor shaft (10-1) of the motor (10) through the motor transmission assembly (3).

2. The motor control circuit board detection device according to claim 1, characterized in that: A motor mounting hole (4-1) is provided on the motor mounting seat (4), and the cross-sectional shape of the motor mounting hole (4-1) corresponds to the outer contour of the motor (10) to be tested.

3. The motor control circuit board detection device according to claim 1, characterized in that: The motor transmission assembly (3) comprises a transmission shaft (3-1), and a motor shaft mounting hole (3-11) is provided at the right end of the transmission shaft (3-1); the motor shaft (10-1) of the motor (10) is inserted into the motor shaft mounting hole (3-11) of the transmission shaft (3-1) to form a transmission matching connection.

4. The motor control circuit board detection device according to claim 3, characterized in that: The invention also includes a speed measuring device (5), which includes a speed measuring plate (5-1), a Hall sensor (5-2) and a Hall detection probe; the speed measuring plate (5-1) is coaxially fixed on the right end of the transmission shaft (3-1), the Hall sensor (5-2) is fixed on the speed measuring plate (5-1), and the Hall detection probe is fixed on the mounting base plate (1) and cooperates with the Hall sensor (5-2).

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