Motor stator testing device

Abstract

The utility model relates to motor testing equipment technical field especially relates to motor stator testing arrangement. Including testing arrangement ontology, it still includes the wire clamping tool of installation on the testing arrangement ontology workbench, wire clamping tool includes at least one clamping station, and the clamping of all outgoing line can be completed through one action, spares the step of manual operation wire clamp one by one, can significantly shorten the clamping time, improves the test efficiency, provides the clamping force by the telescopic part, and staff only needs to place the stator and controls telescopic part, avoids the repetitive, high -strength manual wire clamping action, reduces the fatigue, the compression link and the conductive block cooperation clamping, and the clamping force is stably outputted by telescopic part, avoids the poor contact or wire damage caused by uneven artificial force, improves the test reliability, and the scheme still can reduce the direct contact of the hand and high -voltage test loop, reduces the risk of electric shock.

Description

Technical Field

[0001] This utility model relates to the field of motor testing equipment technology, and in particular to a motor stator testing device. Background Technology

[0002] In the motor manufacturing industry, after the stator windings are wound and connected, each phase winding must be tested for electrical performance such as resistance, insulation, and withstand voltage to ensure that the stator meets quality requirements. Existing technologies typically use motor stator testing devices with wire clamps (such as alligator clips or other manual clamps). For example, Chinese Patent CN202323619212.1 discloses an adjustable test frame motor stator testing device, in which wire clamps are set on the test platform. Each set of wire clamps requires manual operation to clamp multiple wires in sequence to secure the stator leads.

[0003] Since the stator usually has six or more leads, the staff needs to open, insert, and clamp the wire clamps one by one. The actions are repetitive and time-consuming, which seriously affects the testing efficiency. Moreover, long-term repetitive operations can cause staff fatigue and easily lead to uneven force application, which affects the safety of the test.

[0004] Based on this, the applicant is considering designing a motor stator testing device that can reduce labor intensity. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a motor stator testing device that can reduce labor intensity.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A motor stator testing device includes a testing device body and a wire clamping fixture mounted on the workbench of the testing device body. The wire clamping fixture includes at least one clamping station. Each clamping station includes a fixed frame, a telescopic component, and a lifting frame. The telescopic component is fixedly mounted on the fixed frame, and the lifting frame is fixedly mounted on the telescopic end of the telescopic component. Multiple conductive blocks are fixedly mounted on the fixed frame, and multiple pressure rods corresponding to the conductive blocks are mounted on the lifting frame. When the telescopic component extends or retracts, it causes the pressure rods to move closer to or away from the conductive blocks.

[0007] The working principle and advantages of the motor stator testing device in this technical solution are as follows: First, place the stator of the motor under test on the worktable of the testing device, and then place the multiple stator leads onto the corresponding conductive blocks of the fixed frame. Next, activate the telescopic mechanism, which drives the lifting frame downwards. The pressure rods on the lifting frame correspond one-to-one with the conductive blocks. During the descent, the pressure rods press the stator leads firmly against the conductive blocks, achieving multi-point clamping at one time. The conductive blocks are connected to the testing circuit inside the testing device, and the device performs electrical performance tests such as resistance, insulation, and withstand voltage. After the test, the telescopic mechanism retracts, the pressure rods leave the conductive blocks, and the stator can be quickly removed. Proceed to the next test cycle; This solution completes the clamping of all leads in a single action, eliminating the need for manual operation of each clamp, significantly shortening clamping time and improving testing efficiency; The clamping force is provided by the telescopic component, requiring only the placement of the stator and control of the telescopic component, avoiding repetitive, high-intensity manual clamping actions and reducing fatigue; The clamping rod and conductive block work together to clamp, with the clamping force stably output by the telescopic component, avoiding poor contact or wire damage caused by uneven manual force application, thus improving test reliability; This solution also reduces direct contact between human hands and the high-voltage test circuit, lowering the risk of electric shock.

[0008] Furthermore, the bottom end of the pressure rod facing the conductive block is a clamping head that extends out of the bottom side of the lifting frame, and the top of the conductive block is provided with a clamping groove for the clamping head to extend into.

[0009] Furthermore, the pressure rod is elastically mounted on the lifting frame, which has a mounting cavity. A spring sleeved on the outer wall of the pressure rod is installed in the mounting cavity, and the top end of the pressure rod extends out of the top side of the lifting frame and is threadedly connected to a limiting nut.

[0010] Furthermore, the lifting frame includes a detachably connected upper cover plate and a lower cover plate.

[0011] Furthermore, the fixing frame includes a base plate, a column, and a top plate. The bottom end of the column is detachably connected to the base plate, and the top end is detachably connected to the top plate. The telescopic component is detachably connected to the top plate, and the base plate has multiple mounting slots for installing the conductive block.

[0012] Furthermore, a guide column is fixedly connected to the fixed frame, and a guide groove that cooperates with the guide column is provided on the lifting frame.

[0013] Furthermore, it includes two clamping stations, both of which are detachably connected to the mounting base.

[0014] Furthermore, the bottom side of the mounting base is a mounting slope.

[0015] Furthermore, the workbench is provided with a mounting frame that is detachably connected to the mounting base.

[0016] Furthermore, slots are provided on both opposite outer sidewalls of the mounting base; the mounting frame is concave, forming an installation space therein, and slot strips that cooperate with the slots are fixedly connected to both opposite inner sidewalls of the installation space; the mounting frame includes two limiting ends, and a locking mechanism is provided on the limiting ends; the locking mechanism includes a limiting head that can extend into or out of the installation space, and when the limiting head extends into the installation space, it prevents the mounting base from coming out along the direction of the slot strips. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the motor stator testing device according to an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the testing device body according to an embodiment of the present utility model; Figure 3 This is a three-dimensional structural diagram of the wire clamping fixture according to an embodiment of the present invention. Figure 1 ; Figure 4 This is a three-dimensional structural diagram of the wire clamping fixture according to an embodiment of the present invention. Figure 2 ; Figure 5 This is a schematic cross-sectional view of the wire clamping fixture according to an embodiment of the present invention. Figure 1 ; Figure 6 This is a schematic cross-sectional view of the wire clamping fixture according to an embodiment of the present invention. Figure 1 ; Figure 7 This is a three-dimensional structural diagram of the pressure rod, spring, and limiting nut in an embodiment of this utility model; Figure 8 This is a three-dimensional structural diagram of the conductive block according to an embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the mounting frame according to an embodiment of the present utility model; Figure 10 This is a cross-sectional structural diagram of the mounting frame in an embodiment of the present utility model; In the above attached figures: 100. Test device body; 101. Sliding cover; 110. Worktable; 120. Mounting column; 130. Mounting frame; 131. Locking strip; 132. Limiting end; 133. Through hole; 134. Limiting head; 135. Telescopic screw; 136. Knob; 200. Wire clamping fixture; 210. Mounting base; 211. Slot; 212. Mounting ramp; 213. Wiring channel; 220. Fixing frame; 221. Base plate; 2211. Mounting groove; 222. Column; 223. Top plate; 224. Guide column; 230. Telescopic component; 240. Lifting frame; 241. Upper cover plate; 242. Lower cover plate; 243. Mounting cavity; 244. Guide groove; 250. Pressure rod; 251. Restricting nut; 252. Spring; 253. Wire clamp; 260. Conductive block; 261. Wire clamping groove. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Refer to together Figures 1 to 8 This embodiment provides a motor stator testing device, including a testing device body 100, which also includes a wire clamping fixture 200 installed on the workbench 110 of the testing device body 100. The wire clamping fixture 200 includes at least one clamping station. Each clamping station includes a fixed frame 220, a telescopic member 230, and a lifting frame 240. The telescopic member 230 is fixedly installed on the fixed frame 220, and the lifting frame 240 is fixedly installed on the telescopic end of the telescopic member 230. A plurality of conductive blocks 260 are fixedly installed on the fixed frame 220, and a plurality of pressure rods 250 corresponding one-to-one with the conductive blocks 260 are installed on the lifting frame 240. When the telescopic member 230 extends or retracts, it drives the pressure rods 250 to move closer to or away from the conductive blocks 260.

[0020] In this embodiment, the stator of the motor under test is first placed on the workbench 110 of the test device body 100, and the multiple stator leads are respectively placed on the conductive blocks 260 of the fixed frame 220. Then, the telescopic component 230 is activated, and the lifting frame 240 moves downward through its telescopic end. The pressure rods 250 on the lifting frame 240 correspond one-to-one with the conductive blocks 260. During the downward movement, the pressure rods 250 press the stator leads against the conductive blocks 260, achieving multi-point clamping at one time. The conductive blocks 260 are connected to the test circuit inside the test device body 100, and the test device body 100 completes electrical performance tests such as resistance, insulation, and withstand voltage. After the test, the telescopic component 230 retracts, pressing... Once rod 250 disengages from conductive block 260, the stator can be quickly removed, allowing for the next test cycle. This solution completes the clamping of all leads in a single action, eliminating the need for manual operation of each clamp, significantly reducing clamping time and improving testing efficiency. The clamping force is provided by telescopic component 230, requiring only the placement of the stator and control of the telescopic component 230, avoiding repetitive, high-intensity manual clamping actions and reducing fatigue. The clamping rod 250 and conductive block 260 work together to clamp, with the clamping force stably output by the telescopic component 230, preventing poor contact or wire damage caused by uneven manual force application, thus improving test reliability. This solution also reduces direct contact between human hands and the high-voltage test circuit, lowering the risk of electric shock.

[0021] Preferably, such as Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the bottom end of the pressure rod 250 facing the conductive block 260 is a wire clamping head 253 extending out of the bottom side of the lifting frame 240. The top of the conductive block 260 is provided with a wire clamping groove 261 for the wire clamping head 253 to extend into. The wire clamping groove 261 facilitates the insertion of the stator lead wire, and the top of the wire clamping groove 261 is an open design, with the wire clamping head 253 and the wire clamping groove 261 forming a concave-convex fit.

[0022] Preferably, such as Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, the pressure rod 250 is elastically mounted on the lifting frame 240. The lifting frame 240 is provided with a mounting cavity 243. A spring 252 is installed in the mounting cavity 243 and sleeved on the outer wall of the pressure rod 250. The top of the pressure rod 250 extends out of the top side of the lifting frame 240 and is threadedly connected to the limiting nut 251. The spring 252 enables the pressure rod 250 to adaptively and finely adjust the clamping distance according to the different wire diameters, wire insulation thicknesses, and other dimensions of the stator lead wires after contacting the conductor, ensuring that each stator lead wire can obtain a balanced and stable clamping force, and minimizing the occurrence of poor contact or excessive pressure damage. Rotating the limiting nut 251 on the pressure rod 250 can adjust the pre-compression of the spring 252 to adapt to different specifications of stator lead wires or testing requirements, while also facilitating the quick replacement of the pressure rod 250.

[0023] Preferably, such as Figures 3 to 6 As shown, the lifting frame 240 includes a detachably connected upper cover plate 241 and a lower cover plate 242. The upper cover plate 241 and the lower cover plate 242 are detachably connected by bolts. After the upper cover plate 241 and the lower cover plate 242 are removed, the mounting cavity 243 is exposed, which facilitates the installation of the pressure rod 250 and the spring 252 without having to remove the entire lifting frame 240 from the telescopic member 230. Specifically, the lower cover plate 242 has multiple clearance slots on the front side for the pressure rod 250 clamping wire head 253 to pass through, which facilitates the disassembly and installation of the lower cover plate 242.

[0024] Preferably, such as Figures 3 to 6 As shown, the fixed frame 220 includes a base plate 221, a column 222, and a top plate 223. The bottom end of the column 222 is detachably connected to the base plate 221, and the top end is detachably connected to the top plate 223. The telescopic component 230 is detachably connected to the top plate 223. The base plate 221 has multiple mounting slots 2211 for installing conductive blocks 260. The base plate 221, column 222, and top plate 223 are detachably connected by bolts, which can be quickly assembled or disassembled on the production line, facilitating production, transportation, and maintenance.

[0025] Preferably, such as Figures 3 to 6 As shown, a guide column 224 is fixedly connected to the fixed frame 220, and a guide groove 244 that cooperates with the guide column 224 is provided on the lifting frame 240; the guide column 224 and the guide groove 244 form a stable sliding pair to ensure that the lifting frame 240 always maintains verticality and parallelism during the up and down movement, thereby ensuring that the pressure rod 250 and the conductive block 260 cooperate to clamp.

[0026] Preferably, such as Figures 3 to 6As shown, the device includes two clamping stations, both of which are detachably connected to the mounting base 210. When one station is in the testing phase, the other station can be loaded and unloaded simultaneously, achieving assembly line operation and improving testing efficiency. The testing device body 100 starts testing through the sliding cover 101 on it. When the sliding cover 101 slides to block a clamping station, the testing of that clamping station is started. Specifically, the base plate 221 of the clamping station is detachably connected to the mounting base 210 by bolts. The mounting base 210 has two wiring channels 213 corresponding to the two clamping stations respectively. The test lines connected to the conductive block 260 and the control lines connected to the telescopic component 230 on the two clamping stations are connected to the testing device body 100 through the wiring channels 213, resulting in neat wiring and easier troubleshooting.

[0027] Preferably, such as Figure 1 , Figure 3 and Figure 4 As shown, the bottom side of the mounting base 210 is a mounting slope 212. After the mounting base 210 is installed, the mounting slope 212 tilts the clamping station on it backward, and the conductive block 260 tilts backward and faces the operator. The placement and observation angle is more in line with the human standing posture, reducing bending or arm raising movements and reducing the fatigue of workers during long-term operation. After the conductive block 260 is tilted, the center of gravity of the stator lead end placed in the clamping groove 261 is shifted backward, preventing the stator lead end from slipping forward into the clamping groove 261, improving the convenience and safety of operation. Moreover, when inspected by camera or by manual visual inspection, the tilt angle makes the cooperation state between the stator lead end and the conductive block 260 clear at a glance, making it easy to detect clamping abnormalities in a timely manner.

[0028] Preferably, such as Figure 1 , Figure 2 , Figure 9 and Figure 10 As shown, the workbench 110 is provided with a mounting frame 130 that is detachably connected to the mounting base 210; the mounting base 210 and its clamping station can be fixedly mounted on the workbench 110 through the mounting frame 130, which facilitates the clamping fixture 200 for the entire wire. Specifically, the mounting frame 130 can be fixedly connected to the workbench 110 by bolts or welding.

[0029] Preferably, such as Figure 1 , Figure 2 , Figure 9 and Figure 10As shown, the mounting base 210 has slots 211 on its two opposite outer side walls; the mounting frame 130 is concave, forming an installation space. The two opposite inner side walls of the installation space are fixedly connected with locking strips 131 that mate with the slots 211. The mounting frame 130 includes two limiting ends 132, each with a locking mechanism. The locking mechanism includes a limiting head 134 that can extend into or out of the installation space. When the limiting head 134 extends into the installation space, it prevents the mounting base 210 from dislodging along the locking strips 131. The locking strips 131 and slots 211 form a reliable limiting structure, allowing the mounting base 210 to be pushed in or pulled out like a drawer during installation. The mounting base 210 is pushed into the mounting space within the mounting frame 130, and then the limiting head 134 is extended into the mounting space to prevent the mounting base 210 from leaving the mounting space. Specifically, a through hole 133 is provided on the limiting end 132, and a threaded section that is threadedly connected to the telescopic screw 135 is provided in the through hole 133. One end of the telescopic screw 135 is fixedly connected to the limiting head 134, and the other end is fixedly connected to the knob 136. When the telescopic screw 135 is rotated by the knob 136, the limiting head 134 can be extended or retracted into the through hole 133, and the tapered end of the limiting head 134 is away from the telescopic screw 135.

[0030] Specifically, such as Figure 8 As shown, the aforementioned conductor block is L-shaped and has screw holes, allowing the conductive block 260 to be connected to the test line via bolts.

[0031] Specifically, the aforementioned pressure rod 250 can be made of insulating or conductive material as needed, while the aforementioned mounting base 210, fixing frame 220 and lifting frame 240 are all made of insulating material.

[0032] Specifically, the aforementioned workbench 110 is fixedly installed with a stator assembly column 120 for stator assembly.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of this utility model without departing from the spirit and scope of the technical solutions 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 motor stator testing device, comprising a testing device body, characterized in that, It also includes a wire clamping fixture installed on the workbench of the test device body. The wire clamping fixture includes at least one clamping station. Each clamping station includes a fixed frame, a telescopic component, and a lifting frame. The telescopic component is fixedly installed on the fixed frame. The lifting frame is fixedly installed on the telescopic end of the telescopic component. Multiple conductive blocks are fixedly installed on the fixed frame. Multiple pressure rods corresponding to the conductive blocks are installed on the lifting frame. When the telescopic component extends or retracts, it drives the pressure rods to move closer to or away from the conductive blocks.

2. The motor stator testing device as described in claim 1, characterized in that, The bottom end of the pressure rod facing the conductive block is a clamping head that extends out of the bottom side of the lifting frame, and the top of the conductive block is provided with a clamping groove for the clamping head to extend into.

3. The motor stator testing device as described in claim 1, characterized in that, The pressure rod is elastically mounted on the lifting frame, which has a mounting cavity. A spring is installed in the mounting cavity and sleeved on the outer wall of the pressure rod. The top of the pressure rod extends out of the top side of the lifting frame and is threadedly connected to a limiting nut.

4. The motor stator testing device as described in claim 2, characterized in that, The lifting frame includes a detachably connected upper cover plate and a lower cover plate.

5. The motor stator testing device as described in claim 1, characterized in that, The fixing frame includes a base plate, a column, and a top plate. The bottom end of the column is detachably connected to the base plate, and the top end is detachably connected to the top plate. The telescopic component is detachably connected to the top plate, and the base plate has multiple mounting slots for installing the conductive block.

6. The motor stator testing device as described in claim 1, characterized in that, The fixed frame is fixedly connected to a guide column, and the lifting frame is provided with a guide groove that cooperates with the guide column.

7. The motor stator testing device as described in claim 1, characterized in that, It includes two clamping stations, both of which can be detachably connected to the mounting base.

8. The motor stator testing device as described in claim 7, characterized in that, The bottom side of the mounting base is an inclined surface.

9. The motor stator testing device as described in claim 7, characterized in that, The workbench is equipped with a mounting frame that can be detachably connected to the mounting base.

10. The motor stator testing device as described in claim 9, characterized in that, The mounting base has slots on its two opposite outer side walls; the mounting frame is concave, forming an installation space, and the two opposite inner side walls of the installation space are fixedly connected with locking strips that cooperate with the slots. The mounting frame includes two limiting ends, and the limiting ends are provided with locking mechanisms. The locking mechanisms include limiting heads that can extend into or out of the installation space. When the limiting heads extend into the installation space, they prevent the mounting base from coming out along the locking strip direction.

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