Motor load test system

Abstract

A motor load test system provided by the present invention comprises a workbench, a load test assembly and a test component, the upper end of the middle position of the workbench is provided with a set of load test assembly used for carrying out a load control test on a motor, and the load test assembly comprises a shell, a torque conversion part and a power joint. A set of first inner shells used for protecting the torque conversion component are arranged at the right end of the inner side of the outer shell. Compared with the prior art, the double-motor torque conversion device has the following beneficial effects that a stable and consistent supporting foundation is provided for the double motors through symmetrical arrangement of the first side supporting frame and the second side supporting frame; an inner shell I and an inner shell II of the load test assembly are matched with a sealing rubber strip through embedded connection, so that a test cavity environment with reliable sealing is constructed, and the interference of external impurities on the test precision is effectively isolated; the torque conversion component realizes uniform shunting and confluence conversion of the torque through a matts-shaped structure of a torque division wing plate and a torque division gear and a meshing design of a torque confluence gear.

Description

Technical Field

[0001] This invention is a motor load testing system, belonging to the field of motor load testing technology. Background Technology

[0002] The existing motor-driven load torque transmission process suffers from the following problems, with significant energy loss. Due to the asymmetry of the support structure and assembly deviations, the force distribution along the torque transmission path is uneven, with some areas bearing excessive stress, leading to increased mechanical friction loss. Simultaneously, vibrations caused by the asymmetric structure further exacerbate energy dissipation, resulting in low energy utilization efficiency of the testing system. Conventional solutions involve adding reinforcements to balance the force distribution along the torque transmission path, but this increases equipment size and assembly complexity. Furthermore, the load torque transmission energy loss during motor drive is large, and radial runout is significant. The deficiencies in the support structure design and torque transmission mechanism of existing motor load testing systems have severely impacted testing accuracy, equipment usability, and operational reliability. Moreover, conventional solutions cannot fundamentally solve the problem and instead introduce new drawbacks. Therefore, a new motor load testing system is urgently needed to address these issues. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a motor load testing system, comprising: a workbench, a load testing component, and a testing component, in order to solve the problems mentioned in the background art.

[0004] The technical solution of the present invention is implemented as follows: a motor load testing system includes: a workbench, a load testing component and a testing component. The upper part of the middle position of the workbench is provided with a load testing component for load control testing of the motor. The left side of the load testing component is provided with a side support frame 1 for supporting motor 1, and the right side of the load testing component is provided with a side support frame 2 for supporting motor 2. The load testing assembly includes a housing, a torque conversion component, and a power connector. The right inner side of the housing has an inner shell for protecting the torque conversion component. The inner shell is bolted to the three test components. The inner shell is a hollow structure. A positioning bearing seat is located at the center of its right side to stabilize the output of motor two. Test slots for inserting the load testing end are located at the center of the upper, front, and rear sides of the inner shell. In actual use, motor one and motor two are first bolted to side support frame one and side support frame two respectively, ensuring stable installation. After solidification, the drive ends of the two motors are connected to inner shell two and inner shell one respectively. The power connection with the torque conversion component is achieved through coupling and power connector. Then, the load test ends of the three test components are inserted through the test slot of inner shell one. The sensor mounting base is positioned and fixed by positioning frame and embedded mounting base, so that the load test ends are aligned with the test cavity. Motor one and motor two are started. The torque conversion component realizes the torque splitting and converging conversion through structures such as torque splitting gear and torque converging gear. The sensor of the test component collects data such as motor load, speed and power in real time through the load test end to complete the motor load control test.

[0005] In a preferred embodiment, the first and second side supports are of the same specifications. The first side support is fixed to the first motor by bolts, and the second side support is fixed to the second motor by bolts. Both the first and second side supports are fixed to the workbench by bolts. The load test assembly has a set of test components for detecting the motor load speed and power on its front, upper, and rear sides. The test components include a positioning frame, an embedded mounting base, a sensor mounting base, and a load test end. The middle of the test component has a positioning frame for positioning and fitting with the embedded mounting base. The positioning frame has a concave cross-section when viewed from above. The middle of the positioning frame has an inner mounting groove for positioning and fitting with the embedded mounting base. The inner mounting groove fits into the embedded mounting base and is fixed by bolts. The left side of the embedded mounting base has a set of sensor mounting bases for mounting sensors. The sensor mounting base is fixed to the embedded mounting base by bolts. The left side of the sensor mounting base has a set of load test ends for detecting motor load data.

[0006] In a preferred embodiment, the first positioning bearing housing is internally equipped with a sealed bearing for stable rotation with the drive end of the second motor. Inside the sealed bearing is a coupling for power connection with the drive end of the second motor. To the left of the coupling is a power connector for power connection with the right side of the torque conversion component. To the left of the second inner shell is a set of inner shells for their combined connection. The right side of the first inner shell and the left side of the second inner shell are interlocked and fixed by bolts. A sealing strip is provided at the connection between the first and second inner shells to maintain internal sealing. A second positioning bearing housing for stable rotation of the drive end of the first motor is located in the middle of the left side of the second inner shell. The first and second positioning bearing housings have the same structure. The first and second inner shells are joined left and right, with a sealing strip at the connection, together forming the test chamber. A torque conversion component for torque conversion testing between the first and second motors is located in the middle of the test chamber. The torque conversion component has a set of mounting plates at its lower end for fixed connection. The mounting plates are fixed to the bottom of the outer shell by bolts. The test components adopt a modular assembly method of positioning frame, embedded mounting seat and sensor mounting seat. The fitting design of concave positioning frame and inner mounting groove improves positioning accuracy. Bolt connection facilitates disassembly and maintenance. The multi-directional arrangement of test components can comprehensively collect relevant data of motor load. The fitting connection of inner shell one and inner shell two, together with sealing strip, effectively ensures the sealing of the test chamber and avoids external impurities from entering and affecting test accuracy. The symmetrical structure of positioning bearing seats one and two and the internal sealed bearing ensure stable rotation of the motor drive end and reduce friction loss and deviation during transmission. The torque conversion component is fixed to the bottom of the outer shell by the mounting plate, with accurate and stable positioning, providing a reliable structural foundation for motor torque conversion testing. The overall assembly process is simple and efficient, and the connection of each component is tight, taking into account assembly efficiency and the stability and accuracy of equipment operation.

[0007] In a preferred embodiment, the torque conversion component includes a sealing shell and an inner torque cavity. Inside the sealing shell is a set of fixed-torque bearings for stable rotation with the torque transmission shaft. The outer side of the fixed-torque bearings is fixedly connected to the center of the sealing shell, and the inner side of the fixed-torque bearings is fixedly fitted to the outer side of the torque transmission shaft. The fixed-torque bearings adopt a high-precision rolling bearing structure with a precision grade of P5. Their outer side is fixedly connected to the inner wall of the center of the sealing shell through an interference fit, ensuring no looseness or gap after assembly and guaranteeing the stability of the bearing installation. The inner side is fixedly connected to the outer side of the torque transmission shaft through a positioning fit, and the fitting surface is precision ground to ensure no radial runout of the torque transmission shaft during rotation, achieving stable transmission.

[0008] In a preferred embodiment, a set of torque-distributing blades is provided on the right side of the torque transmission shaft. The torque-distributing blades are integral with the torque transmission shaft. Each set of blades has four sets of blades arranged radially and symmetrically around the axis of the torque transmission shaft. The included angle between adjacent sets of blades is 90 degrees to ensure uniform torque distribution. Each set of blades has a set of positioning clips inside. The positioning clips are stepped holes penetrating the thickness direction of the blades, and their hole diameter precisely matches the outer diameter of the inner support shaft. This is used to position and fix the inner support shaft. Each set of positioning clips also has a set of tools for positioning the torque-distributing gears. The inner support shaft is connected and fixed to each set of inner support shafts by a set of positioning clips. Each set of inner support shafts passes through the center of a set of winglets. The inner support shafts are made of bearing steel and the surface is hardened. Each set of inner support shafts has an inner meshing seat on the outer side of the middle position for positioning and meshing with the pitch gear. The inner support shafts are axially positioned by the stepped hole structure of the positioning clips. Both ends of the inner support shafts extend to both sides of the winglets and are firmly connected to the pitch gear winglets by the positioning clips. After connection, the inner support shafts do not move axially. Each set of inner support shafts passes through the center of the corresponding winglet to ensure the symmetry and stability of the support point.

[0009] In a preferred embodiment, the inner meshing seat and the inner support shaft are integrally formed. The inner side of the pitch gear has teeth that mesh with the inner meshing seat. There are four sets of pitch gears arranged in a crisscross pattern. A set of inner torque cavities for engaging with the converging pitch gears is located in the middle of the inner sides of the four sets of pitch gears. The cross-sectional diameter of the inner torque cavity is the same as that of the converging pitch gears. A set of converging pitch gears is located inside the inner torque cavity, and these converging pitch gears simultaneously mesh with all four sets of pitch gears. A transmission mechanism for connecting to a motor is located in the middle of the converging pitch gears. The drive spindle and the torque-collecting gear are integrated into one structure. The drive spindle passes through the center of the outer connecting plate, and the axis of the drive spindle coincides with the axis of the torque-collecting gear, ensuring coaxiality of torque transmission and avoiding component wear caused by eccentric force. Through the grid structure design of the torque-distributing wing plate and the torque-distributing gear, uniform torque distribution and efficient transmission are achieved, reducing energy loss. The sealing structure of sealing shell one and sealing shell two effectively prevents the intrusion of external impurities and extends the service life of components. The precise fit between the fixed torque bearing one and the inner support shaft ensures rotational stability and reduces vibration and noise. The overall structure is compact, has high transmission efficiency, and is suitable for high-precision torque transmission scenarios.

[0010] In a preferred embodiment, the transmission spindle passes through the center of the outer connecting plate. The outer connecting plate serves as a right-side support and positioning component. Its right-side cross-sectional shape is identical to that of the pitch-split wing plate, and it also features four symmetrically distributed winglets to ensure structural symmetry and adaptability. A set of pitch-split inner shafts is fixedly mounted at the middle left side of each of the four sets of winglets on the outer connecting plate. The axis of each pitch-split inner shaft coincides with the axis of the corresponding inner support shaft. A fitting hole adapted to the inner support shaft is provided on its left side. The right end of the inner support shaft can be precisely inserted into the fitting hole of the pitch-split inner shaft, achieving coaxial docking and positioning support. A set of limiting bushings is fitted onto the outer side of each set of pitch-split inner shafts. The limiting bushings are made of wear-resistant polymer material, and their inner diameter precisely matches the outer diameter of the pitch-split inner shaft. The outer diameter is slightly larger than the inner diameter of the pitch-split gear, effectively limiting the axial displacement of the pitch-split gear and preventing axial movement during meshing transmission, ensuring meshing accuracy and transmission stability.

[0011] In a preferred embodiment, a set of torque side shafts for connecting the power of motor 2 is provided on the right side of the middle position of the outer connecting plate. The torque side shafts are fitted and fixed to the power connector. A set of annular toothed walls for restricting the circumferential rotation of the four sets of pitch gears is provided on the outer side. The annular toothed walls are opened on the inner side of the left end of the sealing shell 2. A set of fixed torque bearing 2 is installed inside the right side of the sealing shell 2, which is integrally formed with the sealing shell 2. Its tooth profile parameters are precisely matched with the outer teeth of the pitch gears. The outer sides of the four sets of pitch gears are all meshed with the annular toothed walls. Through the limiting effect of the annular toothed walls, the rotation trajectory of the pitch gears is restricted, ensuring that the pitch gears always rotate circumferentially around the axis of the inner support shaft, avoiding deviation or interference. An inner sealing gasket is provided at the connection between the left side of the sealing shell 2 and the sealing shell 1. The sealing shell 1 and the sealing shell 2 are connected and fixed by several sets of internal fixing bolts. An outer torque cavity for converting the torque of motor 1 and motor 2 is provided inside the sealing shell 2. A lower support platform for supporting the bottom of the sealing shell 2 is provided at the lower end of the sealing shell 2.

[0012] After adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. The symmetrical arrangement of side support frame one and side support frame two provides a stable and consistent support foundation for the dual motors. The inner shell one and inner shell two of the load test component are connected by a fitting and sealing strip to construct a sealed and reliable test chamber environment, effectively isolating external impurities from interfering with the test accuracy. The torque conversion component realizes uniform torque distribution and conversion through the grid structure of the torque distribution wing plate and the torque distribution gear and the meshing design of the torque collection gear. With the sealed bearings and high-precision fixed torque bearings inside the positioning bearing seats one and two, the friction loss and radial runout during the transmission process are greatly reduced, ensuring stable rotation of the motor drive end. It provides accurate and reliable structural support for load testing. The overall structure is compact and the positioning is accurate, taking into account both operational stability and transmission efficiency. 2. By simultaneously collecting data from three sets of test components on the front, top, and rear sides of the workbench, key parameters such as motor load, speed, and power can be comprehensively captured, avoiding data deviation caused by a single test angle. The fitting design of the concave positioning frame and inner mounting groove of the test component improves the positioning accuracy of the sensor mounting base, enabling the load test end to be accurately aligned with the test cavity, ensuring the accuracy of data acquisition. The precision transmission structure of the torque conversion component reduces energy loss and deviation during torque transmission, allowing the test data to more accurately reflect the actual load state of the motor. At the same time, the sealed test environment avoids interference from external factors on sensor detection, further ensuring the reliability and accuracy of the test results. 3. The connection between the side support frame and the worktable and motor, the combination of inner shell one and inner shell two, and the assembly of the sensor mounting base and the embedded mounting base all facilitate quick disassembly and installation, reducing the complexity of equipment assembly and improving assembly efficiency. The test components adopt a modular assembly method of positioning frame, embedded mounting base, and sensor mounting base, which not only simplifies the assembly process but also facilitates the later inspection, replacement, and calibration of sensors. The torque conversion component is fixed to the bottom of the outer shell by the mounting plate, which is stable and easy to disassemble, facilitating the maintenance of core components such as internal gears and bearings. The overall structural design takes into account both the high efficiency of assembly and the convenience of maintenance, reducing downtime for maintenance during equipment use and improving the overall efficiency of equipment use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a motor load testing system according to the present invention; Figure 2 This is a top view of the load testing component in a motor load testing system according to the present invention, taken from the right oblique front side. Figure 3 This is an exploded view of the load testing component in a motor load testing system of the present invention, taken from the left oblique front side. Figure 4 This is an exploded view of the left oblique front side of the torque conversion component in a motor load testing system of the present invention. Figure 5 This is a schematic diagram of the right oblique rear view of the four sets of torque gears in a motor load testing system of the present invention; Figure 6 for Figure 3 Enlarged structural diagram at point A in the middle; In the diagram: 1-Workbench, 2-Motor 1, 3-Side support 1, 4-Load test assembly, 5-Positioning frame, 6-Embedded mounting base, 7-Sensor mounting base, 8-Load test end, 9-Motor 2, 10-Side support 2, 11-Test component; 41-Inner shell one, 42-Positioning bearing seat one, 43-Coupling, 44-Positioning bearing seat two, 45-Inner shell two, 46-Torque conversion component, 47-Mounting plate, 48-Test chamber, 49-Power connector; 46a-Sealing shell 1, 46b-Torque bearing 1, 46c-Torque transmission shaft, 46d-Torque dividing wing plate, 46e-Positioning clip, 46f-Torque dividing gear, 46g-Internal meshing seat, 46h-Torque collecting gear, 46i-Transmission spindle, 46j-Outer connecting plate, 46k-Torque dividing inner shaft, 46l-Limiting bushing, 46m-Torque side shaft, 46n-Sealing shell 2, 46o-Inner fixing bolt, 46p-Annular tooth wall, 46q-Outer torque cavity, 46r-Torque bearing 2, 46s-Lower support platform, 46t-Inner support shaft, 46u-Inner torque cavity. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figures 1-6As a first embodiment of the present invention, a motor load testing system includes: a workbench 1, a load testing component 4 and a testing component 11. The upper part of the middle position of the workbench 1 is provided with a load testing component 4 for load control testing of the motor. The left side of the load testing component 4 is provided with a side support frame 3 for supporting motor 2, and the right side of the load testing component 4 is provided with a side support frame 10 for supporting motor 9. The load test assembly 4 includes an outer shell, an inner shell 41, a torque conversion component 46, and a power connector 49. The inner shell 41 is provided on the right side of the inner side of the outer shell to protect the torque conversion component 46. The inner shell 41 is fixed to the three test components 11 by bolts. The inner shell 41 is a hollow structure. The middle right side of the inner shell 41 is provided with a positioning bearing seat 42 to keep the output end of the motor 9 stable. The upper, front, and rear center of the inner shell 41 are all provided with a test slot for the load test end 8 to be inserted. In practical use, motor 1 (2) and motor 2 (9) are first fixed to side support frame 1 (3) and side support frame 2 (10) respectively with bolts. Motor 1 (2) is used as the test end, and motor 2 (9) is used as the load end. Motor 2 (9) is equipped with a load motor rectifier board, and outputs DC power during reverse drive, thus functioning as a generator. After installation and stabilization, the drive ends of the two motors are connected to the positioning bearing seats 2 (44) and 1 (42) of inner shell 2 (45) and inner shell 1 (41) respectively. Power connection with torque conversion component 46 is achieved through coupling 43 and power connector 49. Then, the load test ends 8 of the three sets of test components 11 are inserted through the test slots of inner shell 1 (41). The sensors of test components 11 are adjusted according to the actual detection data. As required, the speed sensor, eddy current sensor, and motor temperature sensor are replaced. The sensor mounting base 7 is positioned and fixed by the positioning bracket 5 and the embedded mounting base 6, so that the load test end 8 is aligned with the test cavity 48. Motor 1 2 and Motor 2 9 are started. The torque conversion component 46 realizes the torque splitting and converging conversion through the torque splitting gear 46f, torque converging gear 46h and other structures. The sensor of the test component 11 can collect data such as load, speed and power inside the torque conversion component 46 in real time through the load test end 8 during the test of Motor 1 2. At the same time, the load test is completed by using Motor 2 9 as the load end to generate electricity, thereby achieving maximum current control from rectified input to low-cost electronic load and reducing hardware usage costs.

[0017] Please see Figures 1-3As a second embodiment of the present invention: Based on the description in the first embodiment, side support frame 3 and side support frame 10 have the same specifications. Side support frame 3 is fixed to motor 2 by bolts, and side support frame 10 is fixed to motor 9 by bolts. Both side support frame 3 and side support frame 10 are fixed to workbench 1 by bolts. The load test assembly 4 is provided with a set of test components 11 for detecting the load speed and power of the motor on its front, upper, and rear sides. The test component 11 includes a positioning frame 5, an embedded mounting base 6, a sensor mounting base 7, and a load test end 8. A positioning frame 5 is provided in the middle of the part for positioning and fitting with the embedded mounting base 6. The positioning frame 5 has a concave cross-section when viewed from above. The positioning frame 5 has an inner mounting groove in the middle of the interior for positioning and fitting with the embedded mounting base 6. The inner mounting groove fits into the embedded mounting base 6 and is fixed by bolts. A sensor mounting base 7 is provided on the left side of the embedded mounting base 6 for mounting sensors. The sensor mounting base 7 is connected to the embedded mounting base 6 by bolts. A load test terminal 8 for detecting motor load data is provided inside the left side of the sensor mounting base 7.

[0018] The positioning bearing housing 42 houses a sealed bearing for stable rotation with the drive end of the second motor 9. Inside the sealed bearing is a coupling 43 for power connection to the drive end of the second motor 9. To the left of the coupling 43 is a power connector 49 for power connection to the right side of the torque conversion component 46. To the left of the second inner shell 45 is a set of inner shells 41 for their combined connection. The right side of inner shell 41 and the left side of inner shell 45 are interlocked and fixed by bolts. A sealant is provided at the connection point between inner shell 41 and inner shell 45 to maintain internal sealing. A set of positioning bearing seats 44 for stabilizing the rotation of the drive end of motor 2 is provided at the middle position on the left side of inner shell 2 45. Positioning bearing seat 1 42 and positioning bearing seat 2 44 have the same structure. Inner shell 1 41 and inner shell 2 45 are connected left and right, and a sealing strip is provided at the connection point. Together they form test chamber 48. A set of torque conversion component 46 for torque conversion test between motor 2 and motor 2 9 is provided at the middle position of test chamber 48. A set of mounting plate 47 for fixed connection is provided at the lower end of torque conversion component 46. Mounting plate 47 is fixed to the bottom of outer shell by bolts. The test component 11 adopts a modular assembly method consisting of a positioning frame 5, an embedded mounting base 6, and a sensor mounting base 7. The fitting design of the concave positioning frame 5 and the inner mounting groove improves the positioning accuracy. The bolt connection facilitates disassembly and maintenance. The multi-directionally arranged test component 11 can comprehensively collect relevant data on motor load. The fitting connection between inner shell 1 41 and inner shell 2 45, together with the sealing strip, effectively ensures the sealing of the test chamber 48 and prevents external impurities from entering and affecting the test accuracy. The symmetrical structure of positioning bearing seats 1 42 and 2 and the internal sealed bearing ensure the stable rotation of the motor drive end and reduce friction loss and deviation during transmission. The torque conversion component 46 is fixed to the bottom of the outer shell by the mounting plate 47, which is accurate and stable, providing a reliable structural foundation for motor torque conversion testing. The overall assembly process is simple and efficient, and the connections of each component are tight, taking into account both assembly efficiency and the stability and accuracy of equipment operation.

[0019] Please see Figures 1-5 As a third embodiment of the present invention: Based on the description in the first embodiment, the torque conversion component 46 includes a sealing shell 46a and an inner torque cavity 46u. Inside the sealing shell 46a is a set of fixed-torque bearings 46b for stable rotation with the torque transmission shaft 46c. The outer side of the fixed-torque bearings 46b is fixedly connected to the center of the sealing shell 46a, and the inner side of the fixed-torque bearings 46b is fixedly positioned and fitted to the outer side of the torque transmission shaft 46c. The fixed-torque bearings 46b adopt a high-precision rolling bearing structure with a precision grade of P5. Their outer side is fixedly connected to the inner wall of the center of the sealing shell 46a through an interference fit, ensuring no loosening gap after assembly and guaranteeing the stability of the bearing installation. The inner side is fixedly connected to the outer side of the torque transmission shaft 46c through a positioning and fitting method. The fitting surface is precision ground to ensure that the torque transmission shaft 46c has no radial runout during rotation, achieving stable transmission.

[0020] A set of moment-shaping vanes 46d is provided on the right side of the torque transmission shaft 46c. The moment-shaping vanes 46d and the torque transmission shaft 46c are integrally structured. The moment-shaping vanes 46d have four sets of vanes, which are arranged radially and symmetrically with the axis of the torque transmission shaft 46c as the center. The included angle between two adjacent sets of vanes is 90 degrees to ensure the uniformity of torque distribution. Each set of vanes has a set of positioning clips 46e inside. The positioning clips 46e are stepped holes that penetrate the thickness direction of the vane. The hole diameter is precisely matched with the outer diameter of the inner support shaft 46t, which is used to position and fix the inner support shaft 46t. Each set of positioning clips 46e has a set of inner support shafts 46t for positioning the moment-shaping gear 46f. Each set of inner support shafts 46t is connected and fixed to it by a set of positioning clips 46e. Each set of inner support shafts 46t passes through the center position of a set of vanes. The inner support shafts 46t are made of bearing steel and the surface is hardened. Each set of inner support shafts 46t has an inner meshing seat 46g on the outer side of the middle position for positioning and meshing with the pitch gear 46f. The inner support shafts 46t are axially positioned by the stepped hole structure of the positioning clips 46e. Its two ends extend to both sides of the vane and are firmly connected to the pitch vane plate 46d by the positioning clips 46e. After connection, the inner support shafts 46t have no axial movement. Each set of inner support shafts 46t passes through the center position of the corresponding vane to ensure the symmetry and stability of the support point.

[0021] The inner meshing seat 46g and the inner support shaft 46t are an integral structure. The inner side of the pitch gear 46f has teeth that mesh with the inner meshing seat 46g. There are four sets of pitch gears 46f, which are arranged in a grid pattern. At the middle of the inner side of each set of pitch gears 46f is an inner torque cavity 46u for engaging with the converging pitch gear 46h. The cross-sectional diameter of the inner torque cavity 46u is the same as that of the converging pitch gear 46h. Inside the inner torque cavity 46u is a converging pitch gear 46h, which meshes with all four sets of pitch gears 46f. At the middle of the converging pitch gear 46h is a transmission spindle 46i for connecting to the power of motor 2. The moving spindle 46i and the torque-collecting gear 46h are integrated into one structure. The transmission spindle 46i passes through the center of the outer connecting plate 46j, and the axis of the transmission spindle 46i coincides with the axis of the torque-collecting gear 46h, ensuring coaxiality of torque transmission and avoiding component wear caused by eccentric force. Through the crisscross structure design of the torque-distributing blade 46d and the torque-distributing gear 46f, uniform torque distribution and efficient transmission are achieved, reducing energy loss. The sealing structure of the first sealing shell 46a and the second sealing shell 46n effectively prevents the intrusion of external impurities and extends the service life of components. The precise fit between the first fixed torque bearing 46b and the inner support shaft 46t ensures rotational stability and reduces vibration and noise. The overall structure is compact and has high transmission efficiency, making it suitable for high-precision torque transmission scenarios.

[0022] Please see Figures 1-5 As a fourth embodiment of the present invention: based on the description in the second and third embodiments, the transmission spindle 46i passes through the center of the outer connecting plate 46j. The outer connecting plate 46j serves as a right-side support and positioning component. The cross-sectional shape of its right side is exactly the same as the cross-sectional shape of the moment-dividing wing plate 46d. It also has four sets of symmetrically distributed winglets to ensure the symmetry and adaptability of the structure. At the middle left side of the four sets of winglets of the outer connecting plate 46j, a set of moment-dividing inner shafts 46k are fixedly assembled. The axis of the moment-dividing inner shaft 46k coincides with the axis of the corresponding inner support shaft 46t. The left side of the inner support shaft 46k is provided with a structure that is compatible with the inner support shaft 46t. The fitting hole of the support shaft 46t allows the right end of the inner support shaft 46t to be precisely inserted into the fitting hole of the inner moment division shaft 46k, achieving coaxial docking and positioning support between the two. Each inner moment division shaft 46k has a set of limiting bushings 46l sleeved on its outer side. The limiting bushings 46l are made of wear-resistant polymer material, and their inner diameter is precisely matched with the outer diameter of the inner moment division shaft 46k. The outer diameter is slightly larger than the inner diameter of the moment division gear 46f, which can effectively limit the axial displacement of the moment division gear 46f, avoid axial movement of the moment division gear 46f during meshing, and ensure meshing accuracy and transmission stability.

[0023] A set of torque side shafts 46m is provided on the right side of the middle position of the outer connecting plate 46j for connecting the power of motor 2 9. The torque side shafts 46m are engaged and fixed with the power connector 49. A set of annular toothed walls 46p is provided on the outer side of the four-part torque gear 46f to limit its circumferential rotation. The annular toothed walls 46p are opened on the inner left side of the sealing shell 2 46n. A set of fixed torque bearings 2 46r is installed inside the right side of the sealing shell 2 46n, which is integrally formed with the sealing shell 2 46n. Its tooth profile parameters are precisely matched with the outer teeth of the torque gear 46f. The outer sides of the four-part torque gear 46f are all engaged with the annular toothed walls 46p. Through the limiting effect of the annular toothed walls 46p, the rotation trajectory of the torque gear 46f is limited to ensure that... The pitch gear 46f always rotates in a circle around the axis of the inner support shaft 46t to avoid offset or interference. An inner sealing gasket is provided at the connection between the left side of the second sealing shell 46n and the first sealing shell 46a. The first sealing shell 46a and the second sealing shell 46n are connected and fixed by several sets of inner fixing bolts 46o. Inside the second sealing shell 46n is an outer torque cavity 46q for converting the torque of motors 1 and 2. At the lower end of the second sealing shell 46n is a lower support platform 46s for supporting its bottom. First, the first and second sealing shells are connected and fixed by the inner fixing bolts. The inner sealing gasket at the connection ensures sealing, ensuring the outer torque cavity is in a closed environment. The lower support platform provides stable support for the second sealing shell. Next, the torque side shaft is fitted and fixed to the power connector to achieve the connection and transmission of power from motor 2. The outer sides of the four sets of pitch gears precisely mesh with the annular tooth walls on the inner side of the second sealing shell. The annular tooth walls restrict the rotation trajectory of the pitch gears, allowing them to rotate stably around the axis of the inner support shaft. The second fixed-torque bearing on the right side of the second sealed housing helps ensure transmission stability. Together with related components, it completes the torque conversion between motor one and motor two. The process is simple and efficient. The sealing structure can isolate external impurities. The cooperation between the annular tooth wall and the second fixed-torque bearing avoids the offset interference of the pitch gear, ensuring accurate and stable torque conversion. The reliable connection of each component improves the stability and data accuracy of motor load testing.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A motor load testing system, comprising: The workbench (1), load test assembly (4) and test component (11) are characterized in that: a load test assembly (4) for load control test of motor is provided at the upper middle position of the workbench (1), a side support frame (3) for providing support for motor one (2) is provided on the left side of the load test assembly (4), and a side support frame (10) for providing support for motor two (9) is provided on the right side of the load test assembly (4). The load test assembly (4) includes an outer shell, an inner shell (41), a torque conversion component (46), and a power connector (49). The inner right side of the outer shell is provided with a set of inner shells (41) for protecting the torque conversion component (46). The inner shells (41) are fixed to the three test components (11) by bolts. The inner shells (41) are hollow structures. The middle right side of the inner shells (41) is provided with a set of positioning bearing seats (42) for stabilizing the output end of the motor (9). The upper, front, and rear center of the inner shells (41) are all provided with a set of test slots for the load test end (8) to be inserted.

2. The motor load testing system according to claim 1, characterized in that: The side support frame 1 (3) and the side support frame 2 (10) are of the same specifications. The side support frame 1 (3) is fixed to the motor 1 (2) by bolts. The side support frame 2 (10) is fixed to the motor 2 (9) by bolts. Both the side support frame 1 (3) and the side support frame 2 (10) are fixed to the workbench (1) by bolts. The load test assembly (4) is provided with a set of test components (11) for detecting the motor load speed and power on the front, upper and rear sides respectively. The test component (11) includes a positioning frame (5), an embedded mounting base (6), a sensor mounting base (7), and a load test end (8). The test component (11) has a set of positioning frames (5) in the middle position for positioning and fitting with the embedded mounting base (6). The positioning frame (5) has a concave cross-section when viewed from above. The positioning frame (5) has a set of inner mounting grooves in the middle position for positioning and fitting with the embedded mounting base (6). The inner mounting grooves fit into the embedded mounting base (6) and are fixed by bolts. The left side of the embedded mounting base (6) has a set of sensor mounting bases (7) for mounting sensors. The sensor mounting bases (7) are connected to the embedded mounting base (6) by bolts. The left side of the sensor mounting base (7) has a set of load test ends (8) for detecting motor load data.

3. The motor load testing system according to claim 1, characterized in that: The positioning bearing housing (42) is provided with a sealed bearing for stable rotation with the drive end of the motor (9). The inner side of the sealed bearing is provided with a set of couplings (43) for power connection with the drive end of the motor (9). The left side of the couplings (43) is provided with a set of power connectors (49) for power connection with the right side of the torque conversion component (46). A set of sealing strips for maintaining the internal seal is provided at the connection between inner shell 1 (41) and inner shell 2 (45). A set of positioning bearing seat 2 (44) for stabilizing the rotation of the drive end of motor 1 (2) is provided at the middle position on the left side of inner shell 2 (45). The structure of positioning bearing seat 1 (42) and positioning bearing seat 2 (44) is the same. Inner shell 1 (41) and inner shell 2 (45) are connected left and right, and a sealing strip is provided at their connection, together forming the test cavity (48). A set of torque conversion component (46) for testing the torque conversion between motor 1 (2) and motor 2 (9) is provided at the middle position of the test cavity (48). A set of mounting plate (47) for fixing the lower end of the torque conversion component (46) is provided. The mounting plate (47) is fixed to the bottom of the outer shell by bolts.

4. The motor load testing system according to claim 2, characterized in that: The torque conversion component (46) includes a sealing shell (46a) and an inner torque cavity (46u). Inside the sealing shell (46a) is a set of fixed torque bearings (46b) for stable rotation with the torque transmission shaft (46c). The outer side of the fixed torque bearings (46b) is fixedly connected to the center of the sealing shell (46a), and the inner side of the fixed torque bearings (46b) is fixedly positioned and fitted to the outer side of the torque transmission shaft (46c). The fixed torque bearings (46b) adopt a rolling bearing structure. Its outer side is fixedly connected to the inner wall of the center of the sealing shell (46a) by interference fit. After assembly, there is no loose gap, which ensures the stability of the bearing installation. The inner side is fixedly connected to the outer side of the torque transmission shaft (46c) by positioning and fitting. The fitting surface is precision ground to ensure that the torque transmission shaft (46c) has no radial runout during rotation, thus achieving stable transmission.

5. The motor load testing system according to claim 3, characterized in that: A set of moment vanes (46d) is provided on the right side of the torque transmission shaft (46c). The moment vanes (46d) and the torque transmission shaft (46c) are an integral structure. The moment vanes (46d) are provided with four sets of vanes. The four sets of vanes are arranged radially and symmetrically with the axis of the torque transmission shaft (46c) as the center. The included angle between two adjacent sets of vanes is 90 degrees to ensure the uniformity of torque distribution. Each set of vanes has a set of positioning clips (46e) inside. Each set of positioning clips (46e) has a set of inner support shafts (46t) for positioning the moment gear (46f). The positioning clips (46e) are stepped hole structures that penetrate the thickness direction of the vanes. The hole diameter is precisely matched with the outer diameter of the inner support shaft (46t) to realize the positioning and fixing of the inner support shaft (46t). Each set of inner support shafts (46t) is connected and fixed to it by a set of positioning clips (46e). Each set of inner support shafts (46t) passes through the center position of a set of vanes. The inner support shafts (46t) are made of bearing steel and the surface is hardened. Each set of inner support shafts (46t) has an inner meshing seat (46g) on ​​the outer side of the middle position for positioning and meshing with the pitch gear (46f). The inner support shafts (46t) are axially positioned by the stepped hole structure of the positioning clips (46e). Its two ends extend to both sides of the vane and are firmly connected to the pitch vane (46d) by the positioning clips (46e). After connection, the inner support shafts (46t) have no axial movement. Each set of inner support shafts (46t) passes through the center position of the corresponding vane to ensure the symmetry and stability of the support point.

6. The motor load testing system according to claim 5, characterized in that: The inner meshing seat (46g) and the inner support shaft (46t) are an integral structure. The inner side of the pitch gear (46f) is provided with teeth, which mesh with the inner meshing seat (46g). There are four sets of pitch gears (46f), and the four sets of pitch gears (46f) are arranged in a grid structure. The inner middle position of the four sets of pitch gears (46f) is provided with an inner torque cavity (46u) for engaging with the converging gear (46h). The cross-sectional diameter of the inner torque cavity (46u) is the same as that of the converging gear (46h). The inner torque cavity (46u) is provided with a converging gear (46h). The converging gear (46h) meshes with the four sets of pitch gears (46f). The middle position of the converging gear (46h) is provided with a transmission spindle (46i) for power connection with motor 1 (2). The transmission spindle (46i) and the converging gear (46h) are an integral structure. The transmission spindle (46i) passes through the center of the outer connecting plate (46j). The axis of the transmission spindle (46i) coincides with the axis of the converging gear (46h) to ensure the coaxiality of torque transmission and avoid component wear caused by eccentric force.

7. The motor load testing system according to claim 6, characterized in that: The transmission spindle (46i) passes through the center of the outer connecting plate (46j). The outer connecting plate (46j) serves as a right-side support and positioning component. Its right-side cross-sectional shape is exactly the same as the cross-sectional shape of the rectangular wing plate (46d). It also has four sets of symmetrically distributed winglets to ensure the symmetry and adaptability of the structure. At the middle left side of the four sets of winglets of the outer connecting plate (46j), a set of rectangular inner shafts (46k) are fixedly assembled. The axis of the rectangular inner shaft (46k) coincides with the axis of the corresponding inner support shaft (46t). The left side of the inner shaft has a fitting hole that matches the inner support shaft (46t). The right end of the inner support shaft (46t) can be precisely embedded in the fitting hole of the inner shaft (46k) to achieve coaxial docking and positioning support. Each inner shaft (46k) is fitted with a set of limiting bushings (46l) on its outer side. The limiting bushings (46l) are made of wear-resistant polymer material. Their inner diameter is precisely matched with the outer diameter of the inner shaft (46k). The outer diameter is slightly larger than the inner diameter of the inner hole of the gear (46f). This can effectively limit the axial displacement of the gear (46f) and prevent the gear (46f) from axially moving during meshing transmission, thus ensuring meshing accuracy and transmission stability.

8. The motor load testing system according to claim 7, characterized in that: The outer connecting plate (46j) has a set of torque side shafts (46m) on the right side of the middle position for connecting the power of motor two (9). The torque side shafts (46m) are fitted and fixed to the power connector (49). The four sets of pitch gears (46f) have a set of annular tooth walls (46p) on the outside for limiting their circumferential rotation. The annular tooth walls (46p) are opened on the inner side of the left end of the sealing shell two (46n). A set of fixed torque bearing two (46r) is installed inside the right side of the sealing shell two (46n), which is integrally formed with the sealing shell two (46n). Its tooth profile parameters are precisely matched with the outer teeth of the pitch gears (46f). The outer sides of the four sets of pitch gears (46f) are all meshed with the annular tooth walls (46p). The rotation trajectory of the pitch gear (46f) is restricted by the limiting effect of the annular tooth wall (46p), ensuring that the pitch gear (46f) always rotates in a circle around the axis of the inner support shaft (46t), avoiding deviation or interference. An inner sealing gasket is provided at the connection between the left side of the sealing shell 2 (46n) and the sealing shell 1 (46a). The sealing shell 1 (46a) and the sealing shell 2 (46n) are connected and fixed by several sets of inner fixing bolts (46o). The sealing shell 2 (46n) has a set of outer torque chambers (46q) for converting the torque of motor 1 (2) and motor 2 (9). The lower end of the sealing shell 2 (46n) has a set of lower support platforms (46s) for supporting its bottom.

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