Automatic absorption power-on device for motor testing

Abstract

The application provides an automatic absorption and power-on device for motor testing, and belongs to the technical field of motor testing. The device comprises a fixed conductive mechanism, a manual docking mechanism, an automatic docking mechanism and a linear driving mechanism for driving the automatic docking mechanism. A plurality of groups of electrode pairs are fixedly arranged on a first electrode mounting seat of the fixed conductive mechanism, each group of electrode pairs comprising a first fixed electrode and a second fixed electrode which are in conductive connection with each other. A first movable electrode for one-to-one docking with the first fixed electrode is arranged on a second electrode mounting seat of the manual docking mechanism. A second movable electrode for one-to-one docking with the second fixed electrode is arranged on a third electrode mounting seat of the automatic docking mechanism. The first movable electrode is used for one-to-one connection with an interface of a motor to be tested, and the second movable electrode is used for one-to-one connection with an interface of a motor power supply mechanism. The manual wiring operation of an operator is physically isolated from automatic power-on of a test station in structure, and the risk of mistaken power-on injury is eliminated.

Description

Technical Field

[0001] This invention belongs to the field of motor testing technology, and specifically relates to an automatic energizing device for motor testing. Background Technology

[0002] Motor testing is a crucial step in the motor manufacturing process. Before leaving the factory, motors must undergo multiple performance tests at the testing station, and only those that pass the tests can be shipped. Before starting the test, the power supply cable of the testing station must be reliably connected to the motor's interface before the motor can be powered on.

[0003] The traditional method of powering on the motor involves an operator entering the power-on station in the test area and manually connecting the power cables one by one to the motor's interfaces. After confirming the connection is complete, the operator leaves the test area. Then, the control terminal of the test station confirms that the operator has left before powering on the motor.

[0004] However, traditional power-on methods pose safety hazards to personnel. Wiring operators must enter the energized area to perform the operation, and the wiring operator and the power-on operator are usually not the same person, which poses a risk of accidental power-on due to poor communication. Summary of the Invention

[0005] This invention addresses the safety issues of wiring operations in existing technologies by providing an automatic energizing device for motor testing.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: An automatic engagement and power-on device for motor testing includes a fixed conductive mechanism, a manual docking mechanism, an automatic docking mechanism, and a linear drive mechanism for driving the automatic docking mechanism. Multiple sets of electrode pairs are fixedly arranged on the first electrode mounting base of the fixed conductive mechanism, each set of electrode pairs including a first fixed electrode and a second fixed electrode that are mutually conductive. A first movable electrode for docking with the first fixed electrode is provided on the second electrode mounting base of the manual docking mechanism. A second movable electrode for docking with the second fixed electrode is provided on the third electrode mounting base of the automatic docking mechanism. The first movable electrode is used to connect one-to-one with the interface of the motor under test via a cable, and the second movable electrode is used to connect one-to-one with the interface of the motor power supply mechanism via a cable.

[0007] Furthermore, the docking ends of the first fixed electrodes are all provided with a first truncated cone, and the docking ends of the first movable electrodes are all provided with a first conical cylinder that mates with the first truncated cone; the docking ends of the second fixed electrodes are all provided with a second truncated cone, and the docking ends of the second movable electrodes are all provided with a second conical cylinder that mates with the second truncated cone.

[0008] Furthermore, spiral ridges are provided on the conical surfaces of both the first and second truncated cones.

[0009] Furthermore, a first spring is provided between the first movable electrode and the second electrode mounting base, and a second spring is provided between the second movable electrode and the third electrode mounting base.

[0010] Furthermore, each of the second movable electrodes is provided with a conductive spring on its lower side, and the conductive spring is electrically connected to the resistance testing mechanism. The linear drive mechanism is used to provide two strokes for the automatic docking mechanism. When the first stroke ends, the conductive spring is connected to the second fixed electrode. When the resistance testing mechanism does not detect a short circuit between the conductive springs, the second stroke is executed, the conductive spring separates from the second fixed electrode, and the second movable electrode docks with the second fixed electrode.

[0011] Furthermore, a conductive spring is provided on each of the two sides below the second movable electrode, and the conductive spring next to each second movable electrode is electrically connected to the current detection circuit and voltage detection circuit of the resistance testing mechanism; the resistance testing mechanism uses the Kelvin four-wire method to detect the resistance between different second fixed electrodes.

[0012] Furthermore, the linear drive mechanism includes a fixedly mounted linear actuator and a transition plate fixedly connected to the end of the drive rod of the linear actuator; the transition plate is connected to the automatic docking mechanism.

[0013] Furthermore, the fixed top plate at the top of the automatic docking mechanism is slidably connected to the transition plate via a guide post, and a third spring is sleeved on the portion of the guide post between the transition plate and the fixed top plate.

[0014] Furthermore, the linear actuator is fixedly mounted on the fixed base; a guide shaft is vertically fixedly mounted on the transition plate, and a linear bearing that mates with the guide shaft is fixedly mounted on the fixed base.

[0015] Furthermore, it also includes a tooling base for fixing and mounting the motor to be tested and a quick-locking mechanism for locking the manual docking mechanism.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, by setting up a manual docking mechanism and a fixed conductive mechanism, allows operators to pre-connect the manual docking mechanism to the motor interface at the motor station. Afterwards, the manual docking mechanism is connected to the fixed conductive mechanism and locked before the operator can leave. The operator's wiring work requires no contact with the power supply side of the energized circuit, structurally achieving physical isolation between wiring operations and power supply, fundamentally eliminating the risk of accidental energization and injury due to communication difficulties or operational errors. This invention uses an automatic docking mechanism to automatically complete the docking with the fixed conductive mechanism, achieving automatic connection of the power supply path without manual entry into the energized area, significantly reducing the risk of personnel exposure to a live environment. Furthermore, this invention can achieve multi-station functionality. After testing a specific test item at one station, the motor, along with the manual docking mechanism, can be quickly moved to the next station for docking, enabling batch testing of motor test items and improving motor testing efficiency.

[0017] This invention employs a conical surface mating structure, with a frustum and a cone respectively, between the first fixed electrode and the first movable electrode, and between the second fixed electrode and the second movable electrode. Compared to traditional planar contact methods, conical contact provides a larger effective contact area. Furthermore, the mating of the frustum and the cone has an automatic centering function, eliminating lateral positional deviations during the docking process and ensuring consistent electrical connection quality for each docking. Additionally, the spiral grooves on the frustum's conical surface generate an axial feed scraping effect during the docking of the cone and the frustum, effectively removing oxide films and dust from the contact surface, significantly reducing contact resistance, and improving conductivity and long-term stability.

[0018] In this invention, both the first and second movable electrodes achieve independent axial floating strokes through springs. The springs provide a continuous downward preload to the movable electrodes, making the contact pressure of each electrode independently controllable. This avoids the problem of poor electrode docking due to machining errors or assembly deviations on the docking surface. At the same time, the spring structure also has a certain vibration damping and buffering capacity compared to rigid contact, which can effectively isolate the vibration generated during motor operation and transmit it upward along the electrode to the automatic docking mechanism and the linear drive mechanism, protecting the operating accuracy and service life of the drive mechanism.

[0019] This invention provides a two-stage stroke through a linear drive mechanism. In the first stage of the stroke, the conductive spring on the automatic docking mechanism first connects with the second fixed electrode of the fixed conductive mechanism. At this time, the resistance testing mechanism performs short-circuit and insulation tests on each phase of the motor. Only when it is confirmed that there is no abnormal resistance value in the motor does the linear drive mechanism execute the second stage of the stroke to formally dock and energize the second movable electrode with the second fixed electrode. This completes the safety pre-check before energizing, effectively avoiding the risk of safety accidents caused by directly connecting a motor with a short-circuit fault to the power supply.

[0020] The present invention can also provide conductive springs electrically connected to the resistance testing mechanism on both sides of each second active electrode. The resistance testing mechanism can use the Kelvin four-wire detection method to accurately measure the resistance of each phase winding of the motor. The Kelvin four-wire method eliminates the influence of the contact resistance between the test spring and the fixed electrode on the measurement results by separating the current loop and the voltage detection loop, which greatly improves the accuracy of resistance detection and provides reliable detection data support for judging whether there are faults such as inter-turn short circuits in the motor.

[0021] This invention achieves an elastic connection between the fixed top plate of the automatic docking mechanism and the transition plate of the linear drive mechanism through a guide post and a third spring. The guide post passes through the transition plate and is limited by a snap ring. The third spring is sleeved on the guide post and located between the fixed top plate and the transition plate. This structure enables the automatic docking mechanism and the linear drive mechanism to buffer impact forces and achieve elastic compensation, effectively protecting the electrode docking surfaces from impact damage. At the same time, the continuous downward pressure provided by the spring after docking further enhances the contact reliability between the electrodes. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] Figure 1 : A schematic diagram of the usage state of the present invention; Figure 2 : A schematic diagram of the structure of the present invention; Figure 3 : A cross-sectional view of the fixed conductive mechanism of the present invention; Figure 4 : A cross-sectional view of the manual docking mechanism of the present invention; Figure 5 : A cross-sectional view of the automatic docking mechanism of the present invention; Figure 6 : A schematic diagram of the automatic docking mechanism and linear drive mechanism of the present invention; Figure 7 One of the docking state diagrams of the present invention; Figure 8 : The second schematic diagram of the docking state of the present invention; Figure 9 : Electrical connection diagram of the present invention; The components are: 1-tooling base, 2-fixed conductive mechanism, 21-first electrode mounting base, 22-first fixed electrode, 23-second fixed electrode, 24-conductive column, 25-fixed electrical limit seat, 26-spring piece receiving groove, 27-first cone, 28-second cone, 29-spiral convex texture, 3-manual docking mechanism, 31-first movable electrode, 32-second electrode mounting base, 33-first spring, 34-hand plate, 35-first cone, 4-automatic docking mechanism, 41-second movable electrode, 42-third electrode mounting base, 43-second spring, 44-second cone, 45-conductive spring piece, 46-protective cover, 47-fixed top plate, 48-guide column, 5-linear drive mechanism, 51-linear actuator, 52-fixed base, 53-guide shaft, 54-linear bearing, 55-transition plate, 56-third spring, 6-quick lock mechanism. Detailed Implementation

[0024] To better understand the present invention, the content of the invention is further clearly illustrated below with reference to embodiments and accompanying drawings. However, the scope of protection of the present invention is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details.

[0025] In the description of this application, the terms "upper and lower", "top and bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific way, and therefore should not be construed as a limitation of this application.

[0026] Example 1: See Figures 1-9 The purpose of this embodiment is to provide an automatic engagement and power-on device for motor testing, including a tooling base 1, a fixed conductive mechanism 2, a manual docking mechanism 3, an automatic docking mechanism 4, a linear drive mechanism 5, and a quick-lock mechanism 6.

[0027] Tooling base 1 is fixedly installed on the inspection station, such as Figure 1 As shown, the fixture base 1 is used to fix and install the motor to be tested.

[0028] The fixed conductive mechanism 2 is fixedly installed next to the tooling base 1, or as follows: Figure 1 , Figure 2 It is also fixedly mounted on the tooling base 1. Figure 2 , Figure 3As shown, the fixed conductive mechanism 2 includes a first electrode mounting base 21 and n sets of electrode pairs (n not less than the minimum number of interfaces required by the motor under test) fixedly disposed on the first electrode mounting base 21. The n sets of electrode pairs are evenly distributed along the length direction of the first electrode mounting base 21. Each electrode pair includes a conductive post 24 fixedly disposed inside the first electrode mounting base 21, and a first fixed electrode 22 and a second fixed electrode 23 respectively fixedly connected to both ends of the conductive post 24. The axial direction of the conductive post 24 is consistent with the width direction of the first electrode mounting base 21; both the first fixed electrode 22 and the second fixed electrode 23 extend upward. A fixed electrical limit seat 25 for providing a limit for the second fixed electrode 23 is also fixedly disposed on the upper side of the first electrode mounting base 21. The second fixed electrode 23 passes through the fixed electrical limit seat 25 and extends above the fixed electrical limit seat 25.

[0029] The manual docking mechanism 3 is electrically connected to the motor under test and is used for quick docking with the fixed conductive mechanism 2. For example... Figure 2 , Figure 4 As shown, the manual docking mechanism 3 includes a second electrode mounting base 32, a handheld plate 34 fixedly connected to the second electrode mounting base 32 for handheld operation, and n first movable electrodes 31 evenly spaced along the length of the second electrode mounting base 32. Each first movable electrode 31 vertically penetrates the second electrode mounting base 32, with its lower end for one-to-one docking with a first fixed electrode 22, and its upper end for one-to-one fixed connection with one end of a first cable (not shown in the structural diagram). The other end of the first cable is used to connect to the motor's power supply interface and sensor interface. Taking a common three-phase industrial motor as an example, the first cable connects to several power supply interfaces of the motor (such as the three power interfaces of the main drive and the three power interfaces of the cooling fan), the grounding terminal, and the sensor interface (such as three temperature-measuring resistance wires). The connection between the first movable electrode 31 and the first cable can be achieved using the sleeve structure shown in the attached diagram and cold pressing, or by soldering; alternatively, an external thread can be provided on the upper end of the first movable electrode 31, and the first cable end (cable lug) can be tightened with double nuts.

[0030] The automatic docking mechanism 4 is electrically connected to the motor power supply mechanism and is used to dock with the fixed conductive mechanism 2. For example... Figure 2 , Figure 5 , Figure 6As shown, the automatic docking mechanism 4 is positioned directly above the fixed conductive mechanism 2, and includes a third electrode mounting base 42 and n second movable electrodes 41 evenly spaced along the length of the third electrode mounting base 42. Each second movable electrode 41 vertically penetrates the third electrode mounting base 42, with its lower end used for one-to-one docking with the second fixed electrode 23, and its upper end fixedly connected to one end of a second cable (not shown in the structural diagram). The other end of the second cable is used to connect to the power supply interface corresponding to the motor power supply mechanism. A fixed top plate 47 is fixedly mounted on the upper side of the third electrode mounting base 42 via a column, and a protective cover 46 is also provided between the fixed top plate 47 and the third electrode mounting base 42. The connection between the second movable electrode 41 and the second cable can be achieved using the sleeve structure shown in the attached diagram and cold pressing, or by soldering; alternatively, an external thread can be provided on the upper end of the second movable electrode 41, and the second cable end (lug) can be tightened with double nuts.

[0031] The linear drive mechanism 5 is used to drive the automatic docking mechanism 4 to move up and down. For example... Figure 2 , Figure 6 As shown, the linear drive mechanism 5 includes a fixed base 52 fixedly mounted on a crossbeam (not shown), a linear actuator 51 mounted on the fixed base 52 with its drive rod pointing vertically downwards, a transition plate 55 fixedly connected to the lower end of the drive rod of the linear actuator 51, and a guide shaft 53 vertically fixedly connected to the transition plate 55 and slidably connected to the fixed base 52. A linear bearing 54 cooperating with the guide shaft 53 is fixedly mounted on the fixed base 52. Multiple guide posts 48 are fixedly mounted on the fixed top plate 47. The upper ends of the guide posts 48 all penetrate the transition plate 55 and are limited by snap rings. Simultaneously, a third spring 56 is sleeved on the portion of the guide post 48 between the transition plate 55 and the fixed top plate 47. The third spring 56 and the guide post 48 cooperate to provide elastic compensation for the fixed top plate 47 and the transition plate 55, which can both buffer the impact force during downward docking and provide pre-tightening force for docking with the fixed conductive mechanism 2. The linear actuator 51 can be an electric push rod, a linear motor, a cylinder, a hydraulic cylinder, or other linear drive device.

[0032] The quick-lock mechanism 6 is used to quickly lock the manual docking mechanism 3, which is already docked with the fixed conductive mechanism 2. The quick-lock mechanism 6 can be a cam-locking handle as shown in the attached figure, or it can be other quick-locking components, such as a thumb-type locker.

[0033] In operation, the above scheme first fixes the motor on the tooling base 1, connects the manual docking mechanism 3 to the corresponding interface of the motor via the first cable, and then docks the manual docking mechanism 3 with the fixed conductive mechanism 2, so that the first movable electrode 31 is connected one-to-one with the fixed conductive mechanism 2. The quick-locking mechanism 6 is then used to lock the manual docking mechanism 3 onto the fixed conductive mechanism 2. Subsequently, the operator leaves the testing station, and the linear drive mechanism 5 is remotely operated to drive the automatic docking mechanism 4 to move downwards and dock with the fixed conductive mechanism 2, so that the second movable electrode 41 is connected one-to-one with the second fixed electrode 23, achieving the purpose of automatic power-on.

[0034] Furthermore, to improve the reliability of the electrical connections between the first movable electrode 31 and the fixed conductive mechanism 2, and between the second movable electrode 41 and the second fixed electrode 23, on the one hand, the mating end (top) of the first fixed electrode 22 is provided with a first frustum 27, and the mating end (bottom) of the first movable electrode 31 is provided with a first conical cylinder 35 that mates with the first frustum 27 (both have the same taper); on the other hand, the mating end (top) of the second fixed electrode 23 is provided with a second frustum 28, and the mating end (bottom) of the second movable electrode 41 is provided with a second conical cylinder 44 that mates with the second frustum 28 (both have the same taper). Compared with conventional planar contact, conical contact has a larger contact area, and the mating of the frustum and the conical cylinder can automatically align, eliminating lateral deviation during the docking process.

[0035] Preferably, both the first cone 27 and the second cone 28 are provided with spiral ridges 29 on their conical surfaces. The cross-section of the spiral ridges 29 is arc-shaped, and the ridge height is 0.1-0.3 mm. When the cone and the cone 28 are connected, the spiral ridges 29 will generate axial feed scraping, which will remove the oxide film and dust on the surface of the cone (first cone 35 and second cone 44) and reduce the contact resistance.

[0036] On the other hand, a first spring 33 is provided between the first movable electrode 31 and the second electrode mounting base 32, and a second spring 43 is provided between the second movable electrode 41 and the third electrode mounting base 42. Since the movable electrodes are independently loaded by the springs, the springs can provide a downward elastic force to the movable electrodes, so that the contact between the movable electrodes and the fixed electrodes has a continuous preload; the springs enable each movable electrode to have an independent axial stroke compensation capability, avoiding poor docking due to uneven docking surfaces; compared with rigid contact, the springs can provide a certain vibration damping capability, preventing the vibration of the motor operation from being transmitted along the second movable electrode 41 to the automatic docking mechanism 4 and the linear drive mechanism 5.

[0037] Furthermore, to prevent safety accidents caused by directly connecting the motor power supply mechanism when the motor has a short circuit fault, the linear actuator 51 operates in stages, providing two strokes for the automatic docking mechanism 4. During the first stroke, basic resistance detection is performed on the motor. After the detection is passed, the second stroke is executed to dock the second movable electrode 41 with the second fixed electrode 23.

[0038] Specifically, such as Figure 6 , Figure 7 As shown, conductive springs 45 are provided on the lower side of the second movable electrode 41. The conductive springs 45 are electrically connected to the resistance testing mechanism via a third cable (not shown in the structural diagram). When the first segment of the linear drive mechanism 5 ends ( Figure 6 The conductive spring 45 first connects to the second fixed electrode 23 (the second movable electrode 41 is still separated from the second fixed electrode 23), at which point the relevant circuits of the motor are connected to the resistance testing mechanism. Figure 6 The disengaged state of the manual docking mechanism 3 is only an example. In actual operation, the manual docking mechanism 3 is docked with the fixed conductive mechanism 2. The resistance testing mechanism determines whether there is a short circuit (resistance value lower than the preset threshold) between different conductive spring pieces 45. If none of them exist, a signal is sent to the linear drive mechanism 5 to execute the second stroke. In the second stroke, as the conductive spring piece 45 continues to descend with the automatic docking mechanism 4, its warped end slides along the guide slope of the spring piece receiving groove 26, elastically bending and retracting to both sides, thereby disengaging from the second fixed electrode 23. Finally, the second movable electrode 41 docks and conducts with the second fixed electrode 23.

[0039] The two-step action of the linear drive mechanism 5 (corresponding to the two strokes of the automatic docking mechanism 4) adopts a preset fixed stroke, or a limit switch is set next to the fixed conductive mechanism 2 to provide a positioning signal. The connection between the conductive spring 45 and the third cable can be achieved by soldering or by tightening the end of the third cable with bolts.

[0040] Furthermore, to improve the accuracy of the resistance value detected by the resistance testing mechanism, conductive springs 45 electrically connected to the resistance testing mechanism are provided on both the left and right sides below the second movable electrode 41. At the end of the first stroke of the linear drive mechanism 5, the conductive springs 45 next to each second movable electrode 41 form a group and are in contact with the second fixed electrode 23, allowing the resistance testing mechanism to perform accurate resistance measurement using the Kelvin four-wire detection method. After the resistance test is passed, the linear drive mechanism 5 executes the second stroke, and the conductive springs 45 disengage from the second fixed electrode 23. Figure 9As shown, the conductive springs 45 arranged next to each second active electrode 41 are divided into current testing springs and voltage testing springs. The current testing springs are connected to the current detection circuit of the resistance testing mechanism, and the voltage testing springs are connected to the voltage detection circuit of the resistance testing mechanism. At the same time, the resistance testing mechanism uses a built-in multiplexer to turn on different conductive springs 45 in turn, and performs resistance tests between different conductive springs 45 (i.e. between the second fixed electrodes 23) in turn.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. An automatic energizing device for motor testing, characterized in that, It includes a fixed conductive mechanism, a manual docking mechanism, an automatic docking mechanism, and a linear drive mechanism for driving the automatic docking mechanism; The first electrode mounting base of the fixed conductive mechanism is fixedly provided with multiple sets of electrode pairs, each set of electrode pairs including a first fixed electrode and a second fixed electrode that are mutually conductive; the second electrode mounting base of the manual docking mechanism is provided with a first movable electrode for docking with the first fixed electrode one-to-one; the third electrode mounting base of the automatic docking mechanism is provided with a second movable electrode for docking with the second fixed electrode one-to-one. The first active electrode is used to connect one-to-one with the interface of the motor under test via a cable, and the second active electrode is used to connect one-to-one with the interface of the motor power supply mechanism via a cable.

2. The automatic energizing device for motor testing according to claim 1, characterized in that, The first fixed electrode has a first truncated cone at its docking end, and the first movable electrode has a first conical cylinder at its docking end that mates with the first truncated cone; the second fixed electrode has a second truncated cone at its docking end, and the second movable electrode has a second conical cylinder at its docking end that mates with the second truncated cone.

3. The automatic energizing device for motor testing according to claim 2, characterized in that, Both the first and second truncated cones have spiral patterns on their conical surfaces.

4. The automatic energizing device for motor testing according to claim 1, characterized in that, A first spring is provided between the first movable electrode and the second electrode mounting base, and a second spring is provided between the second movable electrode and the third electrode mounting base.

5. The automatic energizing device for motor testing according to claim 1, characterized in that, Each of the second active electrodes is provided with a conductive spring on its lower side, and the conductive spring is electrically connected to the resistance testing mechanism. The linear drive mechanism provides two strokes for the automatic docking mechanism. When the first stroke ends, the conductive spring is connected to the second fixed electrode. When the resistance testing mechanism does not detect a short circuit between the conductive springs, the second stroke is executed, the conductive spring is separated from the second fixed electrode, and the second movable electrode docks with the second fixed electrode.

6. The automatic energizing device for motor testing according to claim 5, characterized in that, A conductive spring is provided on each of the two sides below the second movable electrode. Each conductive spring next to the second movable electrode is electrically connected to the current detection circuit and voltage detection circuit of the resistance testing mechanism. The resistance testing mechanism uses the Kelvin four-wire method to detect the resistance between different second fixed electrodes.

7. The automatic energizing device for motor testing according to claim 1, characterized in that, The linear drive mechanism includes a fixedly mounted linear actuator and a transition plate fixedly connected to the end of the drive rod of the linear actuator; the transition plate is connected to the automatic docking mechanism.

8. The automatic energizing device for motor testing according to claim 7, characterized in that, The fixed top plate at the top of the automatic docking mechanism is slidably connected to the transition plate via a guide post, and a third spring is sleeved on the portion of the guide post between the transition plate and the fixed top plate.

9. The automatic energizing device for motor testing according to claim 7, characterized in that, The linear actuator is fixedly mounted on the fixed base; a guide shaft is vertically fixedly mounted on the transition plate, and a linear bearing that cooperates with the guide shaft is fixedly mounted on the fixed base.

10. The automatic energizing device for motor testing according to claim 1, characterized in that, It also includes a tooling base for fixing the motor to be tested and a quick-locking mechanism for locking the manual docking mechanism.

Images