Endurance test tool for C-EPS power-assisted motor

Abstract

The utility model discloses a C-EPS power-assisted motor durability test tool, which belongs to the technical field of motor durability test, and comprises a base station, a jolting and vibrating mechanism is arranged in the base station and at the upper end of the base station, the jolting and vibrating mechanism comprises a movable assembly and a driving assembly, and a test table top is arranged at the upper end of the movable assembly; a clamping mechanism is mounted on the test table board; the profiling groove block is fixedly mounted at the upper end of the test table board; the test motor is installed in the profiling groove block. A cantilever counterweight test mechanism is mounted on the front side of the upper end of the test table board; the cantilever counterweight testing mechanism is provided with a counterweight block. And a self-locking counterweight structure is arranged in the counterweight block. Through the above mode, the balancing weight is more convenient and faster to install, the extra workload and installation time are reduced, and the efficiency of the detection device is improved; and bumpy road conditions encountered by the test motor in daily use can be simulated, so that the test comprehensiveness of the test motor is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor durability testing technology, specifically to a C-EPS power assist motor durability testing fixture. Background Technology

[0002] Electric power steering (C-EPS) mainly consists of a torque sensor, electronic control unit (ECU), power steering motor, and reduction mechanism. The power steering motor provides assistance to the steering system, and its performance directly affects the steering assistance effect. Therefore, it is necessary to conduct long-term continuous operation tests on the power steering motor to evaluate its performance stability, reliability, and lifespan.

[0003] Chinese patent CN206920133U discloses a durability testing system for an automotive motor, including a workbench with a support frame fixed on it. The motor under test and a housing are fixed to the right side of the support frame, and the housing is sealed and fixedly connected to the support frame. The motor under test is installed inside the housing, and a cooling device for cooling the housing and a heating device for heating the housing are also connected to the housing. One end of the motor under test is connected to a frequency converter to control its speed, and a speed sensor and a coupling are sequentially connected to the output shaft of the other end of the motor. A damper is also fixed on the workbench and connected to the coupling. However, this device still has the following problems during use:

[0004] When a car's internal motor is in use, it often encounters bumpy road conditions. At this time, it is necessary to test the motor's torque resistance under vibration. However, the device used does not perform comprehensive testing of the motor, which will affect the test results.

[0005] Based on this, this utility model designs a C-EPS power assist motor durability testing fixture to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a C-EPS power assist motor durability testing fixture.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The C-EPS power-assisted motor durability testing fixture includes a base, a test platform, a vibration mechanism, a contoured slot block, a test motor, a clamping mechanism, a cantilever counterweight testing mechanism, a self-locking counterweight structure, and a counterweight block. The base has a vibration mechanism installed inside and on its upper end to control the vibration of the test platform and simulate real road conditions. This vibration mechanism includes a movable component for driving the test platform's vibration and a drive component for controlling the movement of the movable component. The drive component is installed inside the base, and the movable component is installed on the upper end of the base and connected to the drive component, as well as to the test platform. The test platform is installed on top of the movable component. A clamping mechanism for fixing the test motor is installed on the test platform. The contoured slot block is fixedly installed on the upper end of the test platform. The test motor is installed within the contoured slot block. A cantilever counterweight testing mechanism for load testing the test motor is installed on the upper front side of the test platform. A counterweight block is installed on the cantilever counterweight testing mechanism. The counterweight block has a self-locking counterweight structure for easy installation and removal.

[0009] Furthermore, the drive assembly includes a motor, a rotating spindle, and a cam. The motor is fixedly mounted on the left end of the base, the rotating spindle is rotatably mounted on the left side of the inner wall of the base, and the output end of the motor is fixedly connected to the left end of the rotating spindle, while the right end of the rotating spindle is fixedly connected to the proximal end of the cam; the cam is connected to the movable component.

[0010] Furthermore, the movable component includes a push rod, a roller, a first return spring, a support guide rod, a second return spring, and limiting posts. A roller is rotatably mounted on the lower end of the push rod; the roller is in contact with the distal end of the cam; a sliding groove is provided in the middle of the base, and the push rod is slidably connected to the sliding groove; the upper end of the first return spring is fixedly connected to the lower end of the test platform, and the lower end of the first return spring is fixedly connected to the upper end of the push rod; limiting posts are symmetrically fixedly mounted on the left and right sides of the upper end of the base; the upper end of the support guide rod is fixedly connected to the lower end of the test platform; and the support guide rod is slidably connected to the limiting posts; the second return spring is sleeved on the outer wall of the support guide rod, and the upper end of the second return spring is fixedly connected to the lower end of the test platform, and the lower end of the second return spring is fixedly mounted on the upper end of the limiting posts.

[0011] Furthermore, the clamping mechanism includes a rotary cylinder and a pressure plate. The rotary cylinder is fixedly installed on the upper right side of the test platform, and the output end of the rotary cylinder is fixedly connected to the pressure plate. The pressure plate is in contact with the upper end of the test motor.

[0012] Furthermore, the contact surface between the clamping plate and the test motor is arc-shaped;

[0013] Furthermore, the cantilever counterweight testing mechanism includes a mounting plate, a cantilever, conical blocks, and a crossbar. The mounting plate is fixedly installed on the upper front side of the test platform. The front end of the mounting plate is rotatably connected to one end of the cantilever, and a crossbar is fixedly installed on the other end of the cantilever. Two conical blocks are fixedly installed on the crossbar.

[0014] Furthermore, the self-locking counterweight structure includes a locking block, a locking spring, and a locking pin. The counterweight block has a mounting groove in the middle, and the diameter of the mounting groove is the same as the diameter of the large end of the conical block. The counterweight block has locking grooves symmetrically arranged on the upper and lower sides of its rear end. The locking pin is slidably connected to the locking groove. One end of the locking spring is fixedly connected to the middle of the locking groove, and the other end of the locking spring is fixedly connected to the locking block. The locking block is fixedly installed on the inner end of the locking pin.

[0015] Furthermore, the locking block is provided with an inclined surface that cooperates with the conical block for locking.

[0016] Compared with the prior art, the advantages of this utility model are as follows: The operator places the test motor in the contoured slot and then fixes the test motor on the contoured slot using a clamping mechanism; the output end of the test motor is connected to the cantilever counterweight testing mechanism, and then the counterweight is installed on the cantilever counterweight testing mechanism through a self-locking counterweight structure. The test motor is then started, and the operation of the test motor drives the cantilever counterweight testing mechanism to work. At this time, the load durability test of the test motor can be performed. The self-locking counterweight structure makes the installation of the counterweight more convenient and quick, reducing additional workload and installation time, and improving the efficiency of the testing device. Furthermore, when the test motor is undergoing load durability testing, the drive component is activated, and the operation of the drive component drives the movable component to vibrate the test platform up and down, thereby simulating the bumpy road conditions encountered by the test motor in daily use, improving the comprehensiveness of the test motor test. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This utility model provides a three-dimensional test fixture for the durability testing of C-EPS power-assisted motors. Figure 1 ;

[0019] Figure 2 This is a front view of the C-EPS power assist motor durability testing fixture of this utility model;

[0020] Figure 3This is a right view of the C-EPS power assist motor durability testing fixture of this utility model;

[0021] Figure 4 For along Figure 2 A three-dimensional image with a portion removed along the AA direction;

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 For along Figure 3 A three-dimensional image with a portion removed along the CC direction;

[0024] Figure 7 The three-dimensional C-EPS power assist motor durability testing fixture of this utility model Figure 2 .

[0025] The labels in the diagram represent:

[0026] 1. Base; 2. Test platform; 3. Bumping and vibration mechanism; 31. Drive assembly; 311. Motor; 312. Rotating spindle; 313. Cam; 32. Movable assembly; 321. Push rod; 322. Roller; 323. Sliding groove; 324. First return spring; 325. Support guide rod; 326. Second return spring; 327. Limiting post; 4. Contouring groove block; 5. Test motor; 6. Clamping mechanism; 61. Rotary cylinder; 62. Pressure plate; 7. Cantilever counterweight test mechanism; 71. Mounting plate; 72. Cantilever; 73. Conical block; 74. Crossbar; 8. Self-locking counterweight structure; 81. Mounting slide; 82. Locking slide; 83. Locking block; 84. Locking spring; 85. Locking pin; 9. Counterweight block. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0029] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-7The C-EPS power-assisted motor durability testing fixture includes a base 1, a test platform 2, a vibration mechanism 3, a contoured groove block 4, a test motor 5, a clamping mechanism 6, a cantilever counterweight testing mechanism 7, a self-locking counterweight structure 8, and a counterweight block 9. The vibration mechanism 3, used to control the vibration of the test platform 2 to simulate real road conditions, is installed inside the base 1 and at its upper end. The vibration mechanism 3 includes a movable component 32 for driving the vibration of the test platform 2 and a drive component 31 for controlling the movement of the movable component 32. The drive component 31 is installed inside the base 1, and the movable component 32 is installed on the base 1. The upper end of the test platform 2 is connected to the drive component 31, and the active component 32 is also connected to the test platform 2. The test platform 2 is installed on the upper end of the active component 32. A clamping mechanism 6 for fixing the test motor 5 is installed on the test platform 2. A contoured slot block 4 is fixedly installed on the upper end of the test platform 2. The test motor 5 is installed in the contoured slot block 4. A cantilever counterweight testing mechanism 7 for load testing of the test motor 5 is installed on the upper front side of the test platform 2. A counterweight block 9 is installed on the cantilever counterweight testing mechanism 7. A self-locking counterweight structure 8 for easy installation and disassembly is provided in the counterweight block 9.

[0030] In this invention, the operator places the test motor 5 in the contoured slot 4, and then fixes the test motor 5 to the contoured slot 4 using the clamping mechanism 6. The output end of the test motor 5 is then connected to the cantilever counterweight testing mechanism 7. Subsequently, the counterweight block 9 is installed on the cantilever counterweight testing mechanism 7 using the self-locking counterweight structure 8. The test motor 5 is then started, and its operation drives the cantilever counterweight testing mechanism 7 to work. At this time, the load durability test of the test motor 5 can be performed. The self-locking counterweight structure 8 makes the installation of the counterweight block 9 more convenient and quick, reducing additional workload and installation time, and improving the efficiency of the testing device. Furthermore, when the test motor 5 is undergoing the load durability test, the drive component 31 is activated. The drive component 31 drives the movable component 32 to work, causing the test platform 2 to vibrate up and down, thereby simulating the bumpy road conditions encountered by the test motor 5 during daily use, and improving the comprehensiveness of the test of the test motor 5.

[0031] The drive assembly 31 includes a motor 311, a rotating spindle 312, and a cam 313. The motor 311 is fixedly mounted on the left end of the base 1, and the rotating spindle 312 is rotatably mounted on the left side of the inner wall of the base 1. The output end of the motor 311 is fixedly connected to the left end of the rotating spindle 312, and the right end of the rotating spindle 312 is fixedly connected to the proximal end of the cam 313. The cam 313 is connected to the movable assembly 32.

[0032] The movable component 32 includes a push rod 321, a roller 322, a sliding groove 323, a first return spring 324, a support guide rod 325, a second return spring 326, and a limiting post 327. The lower end of the push rod 321 is rotatably mounted with the roller 322; the roller 322 is in contact with the distal end of the cam 313.

[0033] A sliding groove 323 is provided in the middle of the base 1. The push rod 321 is slidably connected to the sliding groove 323. The upper end of the first reset spring 324 is fixedly connected to the lower end of the test table 2. The lower end of the first reset spring 324 is fixedly connected to the upper end of the push rod 321.

[0034] Limiting posts 327 are symmetrically fixedly installed on the left and right sides of the upper end of the base 1. The upper end of the support guide rod 325 is fixedly connected to the lower end of the test platform 2. The support guide rod 325 is slidably connected to the limiting posts 327. The second return spring 326 is sleeved on the outer wall of the support guide rod 325. The upper end of the second return spring 326 is fixedly connected to the lower end of the test platform 2. The lower end of the second return spring 326 is fixedly installed on the upper end of the limiting posts 327.

[0035] In this invention, the motor 311 drives the rotating main shaft 312 to rotate, which in turn causes the cam 313 to rotate. When the distal end of the cam 313 contacts the roller 322, the roller 322 drives the push rod 321 to move upward along the sliding groove 323. As the push rod 321 moves upward, it compresses the first return spring 324, causing the test platform 2 to rise. The test platform 2 also drives the support guide rod 325 to move upward together. During the movement, the support guide rod 325 pulls the second return spring 326 upward. Through the continuous rotation of the cam 313, the test platform 2 moves continuously up and down in the vertical direction, simulating bumpy road conditions, thereby testing the torque resistance of the test motor 5.

[0036] The clamping mechanism 6 includes a rotary cylinder 61 and a pressure plate 62. The rotary cylinder 61 is fixedly installed on the upper right side of the test platform 2, and the output end of the rotary cylinder 61 is fixedly connected to the pressure plate 62. The pressure plate 62 is in contact with the upper end of the test motor 5, and the contact surface between the pressure plate 62 and the test motor 5 is arc-shaped.

[0037] The cantilever counterweight testing mechanism 7 includes a mounting plate 71, a cantilever 72, a conical block 73, and a crossbar 74. The mounting plate 71 is fixedly installed on the upper front side of the test platform 2. The front end of the mounting plate 71 is rotatably connected to one end of the cantilever 72, and the other end of the cantilever 72 is fixedly installed with the crossbar 74. Two conical blocks 73 are fixedly installed on the crossbar 74. The rotation shaft of the cantilever 72 and the rotation shaft of the test motor 5 can be connected by a flange or a coupling.

[0038] In this invention, after the test motor 5 is placed in the contoured groove 4, the rotary cylinder 61 drives the clamping plate 62 to rotate, so that the clamping plate 62 is pressed against the upper end of the test motor 5 and the test motor 5 is fixed in the contoured groove 4; then the output end of the test motor 5 is fixedly connected to the rear end of the cantilever 72; then the counterweight 9 is installed on the crossbar 74, and the counterweight 9 is fixed to the crossbar 74 by the self-locking counterweight structure 8; then the test motor 5 is started, and the test motor 5 drives the cantilever 72 to rotate to test the load endurance of the test motor 5.

[0039] The self-locking counterweight structure 8 includes an installation groove 81, a locking groove 82, a locking block 83, a locking spring 84, and a locking pin 85. The installation groove 81 is provided in the middle of the counterweight block 9, and the diameter of the installation groove 81 is the same as the diameter of the large end of the conical block 73. The locking grooves 82 are symmetrically provided on the upper and lower sides of the rear end of the counterweight block 9. The locking pin 85 is slidably connected to the locking groove 82 for limiting. One end of the locking spring 84 is fixedly connected to the middle of the locking groove 82, and the other end of the locking spring 84 is fixedly connected to the locking block 83. The locking block 83 is fixedly installed on the inner end of the locking pin 85. The locking block 83 is provided with an inclined surface that cooperates with the conical block 73 for locking.

[0040] In this invention, the mounting groove 81 is aligned with the crossbar 74 and inserted. When the inclined surfaces on the two locking blocks 83 touch the outer end of the first conical block 73, the two locking blocks 83 will simultaneously compress the locking spring 84 outward, and the locking pin 85 will follow the locking blocks 83 and move outward along the locking groove 82 until the locking blocks 83 leave the outer end of the conical block 73. Then, the locking spring 84 returns to its original position, causing the locking blocks 83 and the locking pin 85 to reset. Then, the counterweight 9 is pushed backward until the rear end of the counterweight 9 is blocked by the front end of the mounting plate 71 and the left end of the locking block 83 is blocked by the rear end of the large end of the second conical block 73. At this time, the counterweight 9 is fixed on the crossbar 74. After the test is completed, the locking pin 85 is pulled outward and the counterweight 9 is removed from the crossbar 74.

[0041] Example 2: In some embodiments, such as Figure 3 As shown, in a preferred embodiment of this utility model, the cantilever 72 can adopt a telescopic structure, so that the distance between the rotation center of the cantilever 72 and the crossbar 74 can be changed, thereby changing the rotation arm of the cantilever 72. At this time, the durability test of the test motor 5 under different load conditions can be achieved without replacing the counterweight 9.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A durability testing fixture for C-EPS power-assisted motors, comprising a base (1), characterized in that: It also includes a test platform (2), a vibration mechanism (3), a contoured groove block (4), a test motor (5), a clamping mechanism (6), a cantilever counterweight test mechanism (7), a self-locking counterweight structure (8), and a counterweight block (9). The base (1) and its upper end are equipped with a vibration mechanism (3) for controlling the vibration of the test platform (2) to simulate real road conditions. The vibration mechanism (3) includes a movable component (32) for driving the test platform (2) to vibrate and a drive component (31) for controlling the movement of the movable component (32). The drive component (31) is installed inside the base (1), and the movable component (32) is installed at the upper end of the base (1). 32) Connected to the drive assembly (31), and the movable assembly (32) is also connected to the test platform (2); the test platform (2) is installed on the upper end of the movable assembly (32); a clamping mechanism (6) for fixing the test motor (5) is installed on the test platform (2); a contoured slot block (4) is fixedly installed on the upper end of the test platform (2); the test motor (5) is installed in the contoured slot block (4); a cantilever counterweight test mechanism (7) for load testing of the test motor (5) is installed on the upper front side of the test platform (2); a counterweight block (9) is installed on the cantilever counterweight test mechanism (7); a self-locking counterweight structure (8) for easy installation and disassembly is provided in the counterweight block (9).

2. The C-EPS power assist motor durability testing fixture according to claim 1, characterized in that, The drive assembly (31) includes a motor (311), a rotating spindle (312), and a cam (313). The motor (311) is fixedly installed on the left end of the base (1), and the rotating spindle (312) is rotatably installed on the left side of the inner wall of the base (1). The output end of the motor (311) is fixedly connected to the left end of the rotating spindle (312), and the right end of the rotating spindle (312) is fixedly connected to the proximal end of the cam (313). The cam (313) is connected to the movable assembly (32).

3. The C-EPS power assist motor durability testing fixture according to claim 2, characterized in that, The movable component (32) includes a push rod (321), a roller (322), a first return spring (324), a support guide rod (325), a second return spring (326), and a limiting post (327). The lower end of the push rod (321) is rotatably mounted with the roller (322); the roller (322) is in contact with the distal end of the cam (313). A sliding groove (323) is provided in the middle of the base (1), the push rod (321) is limited and slidably connected to the sliding groove (323), the upper end of the first reset spring (324) is fixedly connected to the lower end of the test table (2), and the lower end of the first reset spring (324) is fixedly connected to the upper end of the push rod (321). Limiting posts (327) are symmetrically fixedly installed on the left and right sides of the upper end of the base (1). The upper end of the support guide rod (325) is fixedly connected to the lower end of the test table (2). The support guide rod (325) and the limiting post (327) are slidably connected. The second return spring (326) is sleeved on the outer wall of the support guide rod (325). The upper end of the second return spring (326) is fixedly connected to the lower end of the test table (2). The lower end of the second return spring (326) is fixedly installed on the upper end of the limiting post (327).

4. The C-EPS power assist motor durability testing fixture according to claim 1, characterized in that, The clamping mechanism (6) includes a rotary cylinder (61) and a clamping plate (62). The rotary cylinder (61) is fixedly installed on the upper right side of the test platform (2), and the output end of the rotary cylinder (61) is fixedly connected to the clamping plate (62). The clamping plate (62) is in contact with the upper end of the test motor (5).

5. The C-EPS power assist motor durability testing fixture according to claim 4, characterized in that, The contact surface between the clamping plate (62) and the test motor (5) is arc-shaped.

6. The C-EPS power assist motor durability testing fixture according to claim 1, characterized in that, The cantilever counterweight testing mechanism (7) includes a mounting plate (71), a cantilever (72), a conical block (73), and a crossbar (74). The mounting plate (71) is fixedly installed on the upper front side of the test platform (2). The front end of the mounting plate (71) is rotatably connected to one end of the cantilever (72). The other end of the cantilever (72) is fixedly installed with a crossbar (74). Two conical blocks (73) are fixedly installed on the crossbar (74).

7. The C-EPS power assist motor durability testing fixture according to claim 6, characterized in that, The self-locking counterweight structure (8) includes a locking block (83), a locking spring (84), and a locking pin (85). The counterweight block (9) has an installation groove (81) in the middle, and the diameter of the installation groove (81) is the same as the diameter of the large end of the conical block (73). The counterweight block (9) has locking grooves (82) symmetrically arranged on the upper and lower sides of the rear end. The locking pin (85) is slidably connected to the locking groove (82). One end of the locking spring (84) is fixedly connected to the middle of the locking groove (82), and the other end of the locking spring (84) is fixedly connected to the locking block (83). The locking block (83) is fixedly installed on the inner end of the locking pin (85).

8. The C-EPS power assist motor durability testing fixture according to claim 7, characterized in that, The locking block (83) is provided with an inclined surface that cooperates with the conical block (73) for locking.

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