Motor run-in testing device

Abstract

The application provides a motor running-in test device, which comprises a support, an axial support mechanism, a knocking mechanism and a current detection mechanism. The support is provided with a first support block, the first support block has a first support groove, the first support groove is used for supporting one end of a rotating shaft of a motor, and the side surface of the first support block is used for limiting the axial movement of the shell of the motor. The axial support mechanism comprises a mounting block and a top rod. The mounting block is mounted on the support, and the top rod is mounted on the mounting block. The top rod is coaxially arranged with the first support groove, and the end of the top rod is embedded in the other end of the rotating shaft. The knocking mechanism is used for knocking the shell. The current detection mechanism is used for current detection of the motor. In the running-in process of the motor, the axial position is stable, the current detection mechanism collects stable current data, the accuracy of current test is improved, and the reliability and efficiency of motor running-in test are improved.

Description

Technical Field

[0001] This application belongs to the field of motor assembly, and more specifically, relates to a motor running-in test device. Background Technology

[0002] After the motor is machined, some motors using solid bearings need to undergo a break-in test under impact conditions to avoid problems with smooth motor rotation caused by bearing installation inaccuracies.

[0003] Chinese patent CN119714872A discloses a motor running-in machine, including a machine base, a running-in test component, a conveyor belt, and a material transfer robot. The material transfer robot moves the motor between the running-in test component and the conveyor belt. The running-in test component includes a support, on which a motor positioning seat is laterally slidably mounted. The support also includes a striking component for striking the motor positioning seat and a reset component for resetting the motor positioning seat. The striking component strikes the motor positioning seat, and after each striking action, the motor positioning seat is reset by the elastic reset component. Simultaneously with the striking, the motor is energized via a detection connector (the wiring and current tester are not displayed), and the current passing through the motor is detected (if the current value exceeds the normal range, it indicates that the motor is not operating smoothly and the resistance is too high).

[0004] However, in existing motor running-in testing devices, the striking component strikes the motor positioning seat, which may cause the motor axis within the positioning seat to shift, resulting in inaccurate current testing. Utility Model Content

[0005] The purpose of this application is to provide a motor running-in test device to solve the problem of inaccurate current testing in related technologies.

[0006] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows: A motor running-in test device is provided, comprising: The bracket is provided with a first support block, the first support block having a first support groove, the first support groove being used to support one end of the motor shaft, and the side of the first support block being used to restrict the axial movement of the motor housing. An axial support mechanism includes a mounting block and a push rod. The mounting block is mounted on the bracket, and the push rod is mounted on the mounting block. The push rod is coaxially arranged with the first support groove, and the end of the push rod abuts against the other end of the rotating shaft. A striking mechanism for striking the casing; A current detection mechanism is used to detect the current of the motor.

[0007] In one embodiment, the bracket is provided with a second support block, the second support block having a horizontal support plane that contacts the bottom plane of the housing.

[0008] In one embodiment, the axial support mechanism includes a first sliding drive member and a slide rail. The slide rail is fixedly installed on the bracket, and the length direction of the slide rail is consistent with the length direction of the top rod. The mounting block is installed on the slide rail, and the first sliding drive member drives the mounting block to slide along the slide rail.

[0009] In one embodiment, the axial support mechanism further includes a first elastic support member, which is mounted on the bracket and located on the side of the mounting block near the first support block. The first elastic support member is used to limit the sliding distance of the mounting block toward the first support block.

[0010] In one embodiment, the axial support mechanism further includes a first rigid support member mounted on the bracket. The first rigid support member is located on the side of the mounting block closer to the first support block, and the initial position of the end of the first elastic support member is closer to the mounting block than the first rigid support member.

[0011] In one embodiment, the axial support mechanism further includes a third support block, which is mounted on the side of the mounting block near the first elastic support member. The strength of the third support block is greater than the material strength of the mounting block, and the third support block is used to abut against the end of the first elastic support member.

[0012] In one embodiment, the axial support mechanism includes a first spring, and the mounting block elastically pushes the top rod against the rotating shaft via the first spring.

[0013] In one embodiment, the axial support mechanism includes an axial support frame, a first adapter shaft, and a first guide rod. One end of the first adapter shaft is sleeved with the top rod, and the other end of the first adapter shaft is connected to the axial support frame. The axial support frame is located on the side of the mounting block away from the first support block. The first guide rod is fixedly installed on the axial support frame. The end of the first guide rod is movably inserted into the mounting block and located on the side of the mounting block closer to the first support block. The length direction of the first guide rod is consistent with the length direction of the top rod. One end of the first spring abuts against the end of the first guide rod, and the other end of the first spring abuts against the mounting block.

[0014] In one embodiment, the axial support mechanism includes a first bushing that is sleeved on the first adapter shaft and slidably fitted inside the mounting block. The first bushing is provided with a first flange that abuts against the side of the mounting block near the axial support frame.

[0015] In one embodiment, the axial support mechanism includes a second bushing, which is fixedly mounted on the mounting block, slidably sleeved on the first guide rod, and fixedly sleeved on the other end of the first spring.

[0016] In one embodiment, the axial support mechanism includes a displacement sensor mounted on the axial support frame, the displacement sensor being used to detect the movement distance of the mounting block relative to the axial support frame.

[0017] In one embodiment, the current detection mechanism includes a current testing unit, a terminal block, and a second sliding drive. The current testing unit is sleeved on the motor and electrically connected to the motor. The current testing unit has a wiring socket. The second sliding drive drives the terminal block to slide into the wiring socket. The terminal block is used to connect to an external power source.

[0018] The motor running-in test device provided in this application embodiment has at least the following beneficial effects: one end of the motor shaft is accommodated in the first support groove, which restricts the radial movement of the end of the shaft; the side of the first support block restricts the movement of the motor housing toward the first support groove; and the other end of the shaft abuts against the top rod, restricting the motor from moving away from the first support block. This achieves axial positioning of the motor at both ends, avoiding uneven friction between the rotor and stator caused by axial movement during the running-in process. The striking mechanism applies periodic vibration to the housing, simulating the vibration conditions of the motor during actual operation. Since the axial position of the motor is stable during the running-in process, the current detection mechanism collects stable current data, improving the accuracy of the current test and enhancing the reliability and efficiency of the motor running-in test. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the operation of the motor running-in test device provided in the embodiments of this application; Figure 2This is another schematic diagram of the motor running-in test device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the motor running-in test device provided in the embodiment after the mounting block has been removed. Figure 4 This is a schematic diagram of the structure of the motor, current detection mechanism and fixing sleeve in the embodiment.

[0021] The main markings in the attached figures are as follows: X, first direction; 10. Motor; 11. Shaft; 12. Housing; 110. Bracket; 120. First support block; 121. First support groove; 130. Second support block; 131. Horizontal support plane; 200. Axial support mechanism; 210. Mounting block; 220. Top rod; 231. First sliding drive component; 232. Slide rail; 241. First elastic support component; 242. First rigid support component; 243. Third support block; 244. Fourth support block; 251. First spring; 252. First guide rod; 253. Second bushing; 260. Axial support frame; 271. First adapter shaft; 272. First bushing; 273. First flange; 274. Displacement sensor; 275. Sensing block; 300. Knocking mechanism; 400. Current detection mechanism; 410. Current testing unit; 411. Wiring socket; 420. Wiring terminal; 430. Second sliding drive component; 510. Fixing sleeve; 511. Connecting post; 520. Elastic sheet; 530. Second spring. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly specified. "Several" means one or more, unless otherwise expressly specified.

[0025] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrase "in one embodiment" or "in some embodiments" appears in various places throughout the specification, and not all references are to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0028] Please see Figure 1 , Figure 2 and Figure 3The motor running-in testing device provided in this application embodiment will now be described. This motor running-in testing device includes a bracket 110, an axial support mechanism 200, a striking mechanism 300, and a current detection mechanism 400. The bracket 110 is provided with a first support block 120, which has a first support groove 121. The first support groove 121 is used to support one end of the rotating shaft 11 of the motor 10, and the side of the first support block 120 is used to restrict the axial movement of the motor housing 12. In this embodiment, the first direction X represents the axial direction of the rotating shaft 11. The first support block 120 prevents the motor 10 from continuing to move in the positive direction of the first direction X, thus achieving unidirectional movement in the first direction X.

[0029] The axial support mechanism 200 includes a mounting block 210 and a push rod 220. The mounting block 210 is mounted on the bracket 110, and the push rod 220 is mounted on the mounting block 210. The push rod 220 is coaxially arranged with the first support groove 121, and the end of the push rod 220 abuts against the other end of the rotating shaft 11. In other words, the push rod 220 prevents the motor 10 from continuing to move in the negative direction of the first direction X, realizing unidirectional movement in the first direction X; combined with the first support block 120 and the push rod 220, the motor 10 is unidirectionally limited, thus realizing the limitation of the motor 10 in the first direction X.

[0030] The striking mechanism 300 is used to strike the housing 12. The current detection mechanism 400 is used to detect the current of the motor 10.

[0031] In this embodiment, one end of the shaft 11 of the motor 10 is accommodated in the first support groove 121, which restricts the radial movement of the end of the shaft 11. The side of the first support block 120 restricts the movement of the housing 12 of the motor 10 toward the first support groove 121. The other end of the shaft 11 abuts against the top rod 220, restricting the motor 10 from moving away from the first support block 120. This achieves axial positioning of the motor 10 at both ends, preventing uneven friction between the rotor and stator caused by axial movement during the running-in process. The striking mechanism 300 applies periodic vibration to the housing 12 to simulate the vibration conditions of the motor 10 during actual operation. Since the axial position of the motor 10 is stable during the running-in process, the current detection mechanism 400 collects stable current data, improving the accuracy of the current test and enhancing the reliability and efficiency of the running-in test of the motor 10.

[0032] In this embodiment, the top of the first support groove 121 is open, which facilitates the placement and removal of the motor 10.

[0033] In one embodiment, see Figure 1As a specific embodiment of the motor running-in test device provided in this application, the bracket 110 is provided with a second support block 130, which has a horizontal support plane 131 that contacts the bottom plane of the housing 12. The large contact area of ​​the plane provides good support and restricts the motor 10 from continuing to move downwards, thereby improving the stability of the motor 10.

[0034] In addition, the horizontal support plane 131 of the second support block 130 only restricts the vertical movement of the motor 10, while the axial (first direction X) movement is still achieved by the top rod 220 and the first support block 120 through axial limiting, which will not hinder the adjustment of the top rod 220, ensuring that the axial degree of freedom of the motor 10 is not affected, which meets the simulation requirements of the axial movement of the motor 10 in the running-in test.

[0035] Optionally, the second support block 130 is located between the first support block 120 and the top rod 220. The second support block 130 is positioned between the two axial ends of the rotating shaft 11, allowing the weight of the motor 10 to be evenly transferred to the bracket 110 via the horizontal support plane 131. This forms a stable three-point axial support structure with the first support block 120, the second support block 130, and the top rod 220, preventing the motor 10 from tilting or swaying due to center of gravity shift. Especially when the striking mechanism 300 applies vibration, it reduces the radial displacement of the housing 12, ensuring the reliability of the motor 10's position during testing. During the motor 10's running-in test, the consistency of vibration conditions directly affects the accuracy of the current data. The central position of the second support block 130 ensures that the motor 10 maintains stable bottom support throughout the axial movement simulation process, making the contact between the top rod 220 and the rotating shaft 11 more precise, reducing vibration interference caused by unstable support, and allowing the motor 10 to maintain a stable posture during dynamic testing, improving the repeatability and reliability of the current test.

[0036] Specifically, the second support block 130 and the striking mechanism 300 are arranged vertically at intervals. Optionally, the horizontal support plane 131 and the output end of the striking mechanism 300 overlap in the vertical direction, and the vibration energy can be directly returned to the vicinity of the center of gravity of the housing 12 through the horizontal support plane 131, reducing the attenuation of energy in the transmission path.

[0037] In one embodiment, see Figure 1 and Figure 2 As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 includes a first sliding drive member 231 and a slide rail 232. The slide rail 232 is fixedly installed on the bracket 110. The length direction of the slide rail 232 is consistent with the length direction of the top rod 220. The mounting block 210 is installed on the slide rail 232. The first sliding drive member 231 drives the mounting block 210 to slide along the slide rail 232.

[0038] In the illustrated embodiment, both the slide rail 232 and the push rod 220 extend along the first direction X. The first sliding drive member 231 moves the push rod 220 toward the rotating shaft 11, thereby ensuring that the push rod 220 and the rotating shaft 11 maintain a contact relationship, while adapting to rotating shafts 11 of different lengths through sliding. The length direction of the slide rail 232 is strictly consistent with the rod length direction of the push rod 220, and the sliding of the mounting block 210 on the slide rail 232 is restricted to axial sliding to prevent the push rod 220 from radially deflecting during movement.

[0039] In one embodiment, see Figure 1 and Figure 2 As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 further includes a first elastic support member 241. The first elastic support member 241 is mounted on the bracket 110 and is located on the side of the mounting block 210 near the first support block 120. The first elastic support member 241 is used to limit the sliding distance of the mounting block 210 toward the first support block 120. During the running-in test of the motor 10, the striking mechanism 300 may apply vibration or the push rod 220 may slide and adjust, which may generate instantaneous impact force to avoid direct rigid collision between the motor 10 and the first support block 120, or between the push rod 220 and the rotating shaft 11.

[0040] When the striking mechanism 300 is working, vibration may be transmitted to the axial support mechanism 200 through the bracket 110, causing fluctuations in the contact position between the push rod 220 and the rotating shaft 11. The first elastic support 241 absorbs vibration energy, reduces the axial movement of the mounting block 210, ensures that the push rod 220 and the rotating shaft 11 are always in close contact, avoids contact failure due to vibration, and thus ensures the consistency of the axial movement simulation of the motor 10 during the running-in test.

[0041] In addition, the stiffness and compression of the first elastic support 241 can be pre-designed. When the mounting block 210 slides along the slide rail 232 toward the first support block 120, the first elastic support 241 is gradually compressed and generates reverse resistance, which ultimately limits the maximum sliding distance of the mounting block 210, prevents the top rod 220 from being over-adjusted and excessively abutting, and ensures that the top rod 220 always maintains a non-tight abutting relationship with the rotating shaft 11 in the axial direction.

[0042] Optionally, the first elastic support 241 is a buffer.

[0043] In one embodiment, see Figure 1 and Figure 2As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 further includes a third support block 243. The third support block 243 is installed on the side of the mounting block 210 close to the first elastic support member 241. The strength of the third support block 243 is greater than the material strength of the mounting block 210. The third support block 243 is used to abut the end of the first elastic support member 241.

[0044] If the mounting block 210 directly abuts against the first elastic support 241, long-term stress may cause local wear, deformation, or even breakage of the mounting block 210. The third support block 243 is made of high-strength material (such as alloy steel), which can effectively withstand the force of the first elastic support 241 and protect the mounting block 210 from damage.

[0045] Optionally, the third support block 243 is detachably mounted on the mounting block 210 to facilitate the replacement of the third support block 243.

[0046] Optionally, on the axial projection of the rotating shaft 11, the projected area of ​​the first elastic support 241 is located within the projected area of ​​the third support block 243, ensuring that the third support block 243 can withstand the impact of the first elastic support 241. Furthermore, the projected area of ​​the first elastic support 241 is 30% to 80% of the projected area of ​​the third support block 243, avoiding an excessively large structure for the third support block 243 and saving its volume.

[0047] In one embodiment, see Figure 1 and Figure 2 As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 further includes a first rigid support member 242. The first rigid support member 242 is installed on the bracket 110. The first rigid support member 242 is located on the side of the mounting block 210 close to the first support block 120. The initial position of the end of the first elastic support member 241 is closer to the mounting block 210 than the first rigid support member 242.

[0048] In the initial state, the first elastic support 241, being closer to the mounting block 210, will first contact the mounting block 210 and generate elastic force. The first elastic support 241 first absorbs impact energy through compression deformation, avoiding structural damage caused by rigid collision. When the mounting block 210 slides to the point where the first elastic support 241 is compressed to its limit position, the mounting block 210 contacts the first rigid support 242. At this time, the first rigid support 242, through rigid limiting, assists the first elastic support 241 in preventing the mounting block 210 from continuing to move, avoiding failure of the first elastic support 241 due to excessive compression, and simultaneously preventing the push rod 220 from excessively pressing the shaft end of the rotating shaft 11.

[0049] The presence of the first rigid support 242 sets a physical limit for the axial sliding of the mounting block 210, ensuring that the contact distance between the push rod 220 and the rotating shaft 11 does not exceed the design range. The first rigid support 242 also provides safety redundancy for extreme working conditions.

[0050] In one embodiment, see Figure 1 and Figure 3 The axial support mechanism 200 also includes a fourth support block 244, which is mounted on the side of the mounting block 210 near the first rigid support member 242. The strength of the fourth support block 244 is greater than the material strength of the mounting block 210, and the fourth support block 244 is used to abut against the end of the first rigid support member 242. If the mounting block 210 directly abuts against the first rigid support 242, long-term stress may cause local wear, deformation, or even breakage of the mounting block 210. The fourth support block 244 is made of high-strength material (such as alloy steel) and can effectively withstand the force of the first rigid support 242, protecting the mounting block 210 from damage.

[0051] Optionally, the fourth support block 244 is detachably mounted on the mounting block 210 to facilitate the replacement of the fourth support block 244.

[0052] Optionally, on the axial projection of the rotating shaft 11, the projected area of ​​the first rigid support member 242 is located within the projected area of ​​the fourth support block 244, ensuring that the fourth support block 244 can withstand the impact of the first rigid support member 242. Furthermore, the projected area of ​​the first rigid support member 242 is 30% to 80% of the projected area of ​​the fourth support block 244, avoiding an excessively large structure for the fourth support block 244 and saving its volume.

[0053] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 includes a first spring 251, and the mounting block 210 elastically pushes the push rod 220 against the rotating shaft 11 through the first spring 251. During the running-in test of the motor 10, the elastic preload provided by the first spring 251 can keep the push rod 220 in continuous contact with the end face of the rotating shaft 11, eliminating the gap caused by vibration or the movement of the motor 10.

[0054] In one embodiment, see Figure 2 and Figure 3As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 includes an axial support frame 260, a first adapter shaft 271, and a first guide rod 252. One end of the first adapter shaft 271 is sleeved with a top rod 220, and the other end of the first adapter shaft 271 is connected to the axial support frame 260. The axial support frame 260 is located on the side of the mounting block 210 away from the first support block 120. The first guide rod 252 is fixedly installed on the axial support frame 260. The end of the first guide rod 252 is movably inserted into the mounting block 210 and is located on the side of the mounting block 210 close to the first support block 120. The length direction of the first guide rod 252 is consistent with the rod length direction of the top rod 220. One end of the first spring 251 abuts against the end of the first guide rod 252, and the other end of the first spring 251 abuts against the mounting block 210.

[0055] Based on this, the first sliding drive member 231 drives the mounting block 210 to slide toward the first support block 120. The mounting block 210 slides relative to the first adapter shaft 271 and compresses the first spring 251. The first spring 251 pushes the first guide rod 252 and the axial support frame 260 connected to the first guide rod 252 to slide. The axial support member slides toward the first support block 120, causing the first adapter shaft 271 to abut against the top rod 220 and the rotating shaft 11. In this way, the mounting block 210 indirectly drives the first adapter shaft 271 to slide, which can buffer the direct rigid contact between the top rod 220 and the mounting block 210, reduce vibration transmission, and is especially suitable for testing the rotating shaft 11 in high-speed rotation or vibration environments.

[0056] Specifically, the length direction of the first guide rod 252 is consistent with the length direction of the top rod 220, forming a rigid guide structure. This restricts the movement trajectory of the mounting block 210 to slide only along the axial direction, avoiding radial sway and ensuring that the top rod 220 always abuts against the axis of the rotating shaft 11, thereby improving the support accuracy.

[0057] Optionally, a first protrusion is provided at the end of the first guide rod 252 to restrict the first spring 251 from disengaging from the first guide rod 252.

[0058] Optionally, there are two first guide rods 252 and two first springs 251, with the two first springs 251 located on opposite sides of the first adapter shaft 271.

[0059] In one embodiment, see Figure 2 and Figure 3 As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 includes a first bushing 272, which is sleeved on a first adapter shaft 271. The first bushing 272 is slidably sleeved in the mounting block 210. The first bushing 272 is provided with a first flange 273, which abuts against the side of the mounting block 210 near the axial support frame 260.

[0060] Based on this, under the drive of the first sliding drive member 231, the mounting block 210 slides away from the first support block 120 until the mounting block 210 abuts against the first flange 273 and pushes the first bushing 272, the first adapter shaft 271, and the axial support frame 260 to slide.

[0061] The first bushing 272 provides a rigid guide channel for the first adapter shaft 271, which ensures that the first adapter shaft 271 moves only along the axial direction and avoids radial swaying, thereby ensuring that the axis of the push rod 220 and the axis of the rotating shaft 11 are always aligned and improving the support accuracy.

[0062] In one embodiment, see Figure 2 and Figure 3 As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 includes a second bushing 253, which is fixedly installed on the mounting block 210. The second bushing 253 is slidably sleeved on the first guide rod 252, and the second bushing 253 is fixedly sleeved on the other end of the first spring 251. That is, the second bushing 253 and the other end of the first spring 251 are linked together, and the first spring 251 can be compressed and stretched with the mounting block 210 to ensure a stable contact relationship between the first spring 251 and the mounting block 210.

[0063] In one embodiment, see Figure 2 As a specific embodiment of the motor running-in test device provided in this application, the axial support mechanism 200 includes a displacement sensor 274, which is mounted on the axial support frame 260. The displacement sensor 274 is used to detect the moving distance of the mounting block 210 relative to the axial support frame 260.

[0064] During the running-in process of motor 10, the shaft 11 may experience axial movement due to electromagnetic force, bearing clearance, or temperature changes. Displacement sensor 274 indirectly obtains the amount of axial movement of shaft 11 by detecting the movement distance of mounting block 210, providing quantitative data for evaluating the bearing performance and rotor dynamic balance of motor 10.

[0065] Optionally, a sensing block 275 is provided on the side of the mounting block 210. The sensing block 275 and the displacement sensor 274 are axially aligned, which facilitates the displacement sensor 274 in detecting the moving distance of the mounting block 210 relative to the axial support frame 260.

[0066] In one embodiment, see Figure 1 and Figure 4As a specific embodiment of the motor running-in test device provided in this application, the current detection mechanism 400 includes a current testing unit 410, a terminal block 420, and a second sliding drive member 430. The current testing unit 410 is sleeved on the motor 10 and electrically connected to the motor 10. The current testing unit 410 has a wiring socket 411. The second sliding drive member 430 drives the terminal block 420 to slide into the wiring socket 411. The terminal block 420 is used to connect to an external power source.

[0067] During the tapping process, the terminal 420 separates from the connector 411 to prevent damage to the terminal 420 due to vibration. After the tapping is complete, the second sliding drive 430 automatically drives the terminal 420 to insert into the connector 411 of the current testing unit 410 to achieve current detection.

[0068] Optionally, the second sliding drive 430 drives the terminal 420 to slide along the axial direction of the rotating shaft 11, i.e., in the first direction X.

[0069] In one embodiment, see Figure 1 and Figure 4 As a specific embodiment of the motor running-in test device provided in this application, the motor running-in test device further includes a fixed sleeve 510 and an elastic sheet 520. The fixed sleeve 510 is fixedly installed on the bracket 110 and is movably sleeved on the rotating shaft 11. The elastic sheet 520 is movably sleeved on the rotating shaft 11. One side of the elastic sheet 520 abuts against the fixed sleeve 510 and the other side abuts against the current testing unit 410 to ensure that the current testing unit 410 is stably electrically in contact with the motor 10.

[0070] Optionally, the fixing sleeve 510 is provided with connecting posts 511, which are fixedly installed on the bracket 110. There are multiple connecting posts 511, and connecting posts 511 are distributed on both opposite sides of the rotating shaft 11.

[0071] Optionally, the motor running-in test device also includes a second spring 530, a fixing sleeve 510 of the second spring 530 connected to the rotating shaft 11, the fixing sleeve 510 having a notch, the second spring 530 being located in the notch, the two ends of the notch being used to abut against the second spring 530, limiting the axial movement distance of the rotating shaft 11.

[0072] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0073] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A motor running-in test device, characterized in that, include: The bracket is provided with a first support block, the first support block having a first support groove, the first support groove being used to support one end of the motor shaft, and the side of the first support block being used to restrict the axial movement of the motor housing. An axial support mechanism includes a mounting block and a push rod. The mounting block is mounted on the bracket, and the push rod is mounted on the mounting block. The push rod is coaxially arranged with the first support groove, and the end of the push rod abuts against the other end of the rotating shaft. A striking mechanism for striking the housing; A current detection mechanism is used to detect the current of the motor.

2. The motor running-in test device as described in claim 1, characterized in that: The bracket is provided with a second support block, which has a horizontal support plane that contacts the bottom plane of the housing.

3. The motor running-in test device as described in claim 1, characterized in that: The axial support mechanism includes a first sliding drive and a slide rail. The slide rail is fixedly installed on the bracket. The length direction of the slide rail is consistent with the length direction of the top rod. The mounting block is installed on the slide rail. The first sliding drive drives the mounting block to slide along the slide rail.

4. The motor running-in test device as described in claim 3, characterized in that: The axial support mechanism further includes a first elastic support member, which is mounted on the bracket and located on the side of the mounting block closer to the first support block. The first elastic support member is used to limit the sliding distance of the mounting block toward the first support block.

5. The motor running-in test device as described in claim 4, characterized in that: The axial support mechanism further includes a first rigid support member, which is mounted on the bracket. The first rigid support member is located on the side of the mounting block closer to the first support block, and the initial position of the end of the first elastic support member is closer to the mounting block than the first rigid support member. And / or, the axial support mechanism further includes a third support block, which is installed on the side of the mounting block near the first elastic support member. The strength of the third support block is greater than the material strength of the mounting block, and the third support block is used to abut against the end of the first elastic support member.

6. The motor running-in test device as described in claim 3, characterized in that: The axial support mechanism includes a first spring, and the mounting block elastically pushes the top rod against the rotating shaft through the first spring.

7. The motor running-in test device as described in claim 6, characterized in that: The axial support mechanism includes an axial support frame, a first adapter shaft, and a first guide rod. One end of the first adapter shaft is sleeved with the top rod, and the other end of the first adapter shaft is connected to the axial support frame. The axial support frame is located on the side of the mounting block away from the first support block. The first guide rod is fixedly installed on the axial support frame. The end of the first guide rod is movably inserted into the mounting block and is located on the side of the mounting block closer to the first support block. The length direction of the first guide rod is consistent with the length direction of the top rod. One end of the first spring abuts against the end of the first guide rod, and the other end of the first spring abuts against the mounting block.

8. The motor running-in test device as described in claim 7, characterized in that: The axial support mechanism includes a first bushing, which is sleeved on the first adapter shaft. The first bushing is slidably sleeved in the mounting block. The first bushing is provided with a first flange, which abuts against the side of the mounting block near the axial support frame. And / or, the axial support mechanism includes a second bushing, which is fixedly installed on the mounting block, slidably sleeved on the first guide rod, and fixedly sleeved on the other end of the first spring.

9. The motor running-in test device as described in claim 7, characterized in that: The axial support mechanism includes a displacement sensor mounted on the axial support frame. The displacement sensor is used to detect the movement distance of the mounting block relative to the axial support frame.

10. The motor running-in test device as described in any one of claims 1 to 9, characterized in that: The current detection mechanism includes a current testing unit, a terminal block, and a second sliding drive component. The current testing unit is sleeved on the motor and electrically connected to the motor. The current testing unit has a wiring socket. The second sliding drive component drives the terminal block to slide into the wiring socket. The terminal block is used to connect to an external power source.

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