A motor rotation tester

Abstract

The present application discloses a motor rotation tester, which belongs to the field of motor testing technology. It mainly includes a fixed plate, a motor to be tested is arranged on the top of the fixed plate, a force sensor is arranged on one side of the motor to be tested, and the force sensor is connected to the motor to be tested; a housing, a connecting shaft is arranged on one side of the housing, and the connecting shaft is connected to the force sensor; a first motor, the first motor is arranged on one side of the housing close to the connecting shaft, a connecting block is installed on the output end of the first motor, and a screw is arranged on the connecting block; an extension block, the extension block is slidably installed in the housing, and a through thread groove is arranged inside the extension block, and the thread groove is adapted to the screw. A motor rotation tester of the present application, by providing a load part with dynamically adjustable size, enables the device to simulate the changes of the object to be tested during actual use, thereby improving the reliability and accuracy of the test.

Description

Technical Field

[0001] The present application relates to the technical field of motor testing, and in particular to a motor rotation tester. Background Art

[0002] As the application of motors becomes more and more extensive, their performance requirements are indeed getting higher and higher. After the motor is processed, it is crucial to conduct a comprehensive test on the motor's parameters and performance. Among them, the rotation test of the motor spindle is particularly critical. This test link not only helps to verify the design performance of the motor, but also can measure the motor's limit load by adding load, thereby ensuring the reliability and stability of the motor in actual application.

[0003] For example, the patent with publication number CN210775765U specifically discloses an ice crusher motor load performance test device. By setting a docking seat, the motor to be tested can be quickly connected to the test unit. At the same time, the motor to be tested is clamped and fixed on the positioning plate by a clamping cylinder and a clamping plate. The test unit and the motor to be tested are started to achieve rapid fixation of the motor, thereby completing the installation and fixation of the motor and the test unit, thereby increasing the speed of performance data testing.

[0004] In the above patent, the device allows the motor and the test unit to be quickly installed and connected by setting a docking seat and a clamping plate. However, when the test device is testing, since the size and shape of the test unit are fixed, the device can only meet the test requirements of the fixed-size test unit. When the motor is testing a workpiece with changeable size (such as a cylinder, etc.), if the workpiece changes size during use, the load and torque borne by the motor will also change accordingly. At this time, the test range of the motor will increase accordingly. In order to achieve this effect in the above patent, it is necessary to replace test units of different sizes, which increases the test cost. Therefore, it is necessary to provide a motor rotation tester to solve the above problem.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a motor rotation tester to simulate the changes of the tested object during use and improve the test efficiency.

[0007] The technical solution adopted by the present application to solve its technical problems is: a motor rotation tester, including a fixing plate, a motor to be tested is arranged on the top of the fixing plate, a force sensor is arranged on one side of the motor to be tested, and the force sensor is connected to the motor to be tested; a shell, a connecting shaft is arranged on one side of the shell, and the connecting shaft is connected to the force sensor; a first motor, the first motor is arranged on one side of the shell close to the connecting shaft, a connecting block is installed on the output end of the first motor, and a screw is arranged on the connecting block; an extension block, the extension block is slidably installed in the shell, a through thread groove is arranged in the extension block, and the thread groove is matched with the screw; wherein when the motor to be tested drives the shell to rotate, the connecting block extends out from the shell driven by the first motor.

[0008] Furthermore, the outer shell includes a first shell, a second shell and a third shell, a top block is arranged inside the second shell, and two ends of the top block are connected to the inner wall of the second shell.

[0009] Furthermore, a first section is provided on the extension block, an inclined block is provided on the side of the first section close to the screw, a second section is provided on the top block, the second section is in contact with the first section, an inclined groove is provided through the center of the second section, and the size of the inclined groove is adapted to the size of the inclined block.

[0010] Furthermore, the first shell and the third shell are made of a hard steel structure, and the material of the second shell is set to be made of a rubber structure.

[0011] Furthermore, arc-shaped connectors are provided at both ends of the top block, and both sets of connectors are connected to the inner wall of the second shell.

[0012] Furthermore, a connecting shell is provided on the outer shell near the force sensor, and a plurality of sets of fixing grooves are fixedly installed inside the connecting shell, and a plurality of sets of push rods are slidably installed in the fixing grooves, and an arc block is provided on the side of the push rod away from the fixing groove; a first toothed disc is rotatably connected to the outer side of the fixing groove, and a plurality of sets of arc grooves are provided on the first toothed disc corresponding to the number of push rods, and a shift block is provided on the side of the arc groove away from the fixing groove, and one end of the shift block is installed on the push rod; a second toothed disc is provided on one side of the first toothed disc, and the size of the second toothed disc is smaller than that of the first toothed disc and is meshed with the first toothed disc.

[0013] Furthermore, a second motor is installed on the outer side of the connecting shell, and an output end of the second motor is connected to the second gear disc.

[0014] Furthermore, a through hole is provided at the center of the connecting shell, and the through hole is adapted to the size of the connecting shaft.

[0015] Furthermore, a connecting frame is provided on one side of the fixed plate located at the motor to be tested, and the force sensor is installed on the top of the connecting frame.

[0016] Furthermore, two groups of bases are installed on one side of the fixing plate away from the connecting frame, and sliding grooves are arranged on the bases.

[0017] The beneficial effect of the present application is that a motor rotation tester provided by the present application, by providing a load part with dynamically adjustable size, enables the device to more accurately simulate the changes that occur in the object under test during actual use, which helps to more accurately evaluate the load characteristics and torque output of the motor, thereby improving the reliability and accuracy of the test.

[0018] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is an overall schematic diagram of a motor rotation tester in this application;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the test component;

[0022] Figure 3 for Figure 2 Schematic diagram of the internal structure of the middle load section;

[0023] Figure 4 for Figure 1 A schematic diagram of the structure of the additional components in the figure;

[0024] Figure 5 for Figure 4 Schematic diagram of the internal structure of the middle connection shell;

[0025] Figure 6 for Figure 5 Schematic diagram of the extension of the middle push rod;

[0026] Figure 7 It is the installation diagram of the load part;

[0027] Figure 8 for Figure 7 Enlarged schematic diagram of point A in the middle

[0028] Fig. 9 for Figure 8 Schematic diagram of the structure of the middle top block;

[0029] Fig.10 is a schematic diagram of the initial position of the extension block;

[0030] Fig.11 It is a schematic diagram of the movement of the extension block;

[0031] Fig.12 The schematic diagram of ejection of the top block is shown in FIG.

[0032] Among them, the reference numerals in the figure are:

[0033] 1. Test bench;

[0034] 2. Test assembly; 21. Fixing plate; 22. Connecting frame; 23. Force sensor;

[0035] 3. Motor to be tested;

[0036] 4. load part; 41. base; 42. housing; 421. connecting shaft; 43. first motor; 44. connecting block; 441. screw rod; 45. extension block; 451. threaded groove;

[0037] 5. Additional components; 51. Connecting shell; 52. Through hole; 53. Fixing groove; 54. Ejector rod; 541. Arc block; 55. First toothed disc; 551. Arc groove; 56. Second toothed disc; 57. Shifting block; 58. Second motor;

[0038] 6. first shell; 61. second shell; 62. third shell; 63. top block; 631. second section; 632. inclined groove; 633. connector;

[0039] 7. First section; 71. Oblique block. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0042] Embodiment 1: This embodiment specifically describes the basic structure and working principle of the motor rotation tester, specifically:

[0043] like Figure 1-Figure 3As shown, the present application provides a motor rotation tester, including a test bench 1, the test bench 1 is arranged in a motor processing plant, a test assembly 2 is installed on the test bench 1, and the test assembly 2 is used to test the rotation performance of the motor spindle, so as to facilitate subsequent improvement and development;

[0044] The test assembly 2 includes a fixing plate 21, which is fixedly mounted on the top of the test bench 1, and the fixing plate 21 is easy to install and disassemble, so as to quickly replace motors of different models. At the same time, the motor 3 to be tested is fixed on the fixing plate 21 by bolts to ensure that it will not be displaced due to vibration or external force during the test. At the same time, a connecting frame 22 is fixedly mounted on one side of the motor 3 to be tested on the fixing plate 21, and a force sensor 23 is arranged on the connecting frame 22. The force sensor 23 is connected to the motor 3 to be tested through a coupling, and is used for real-time measurement of mechanical parameters such as torque and axial force generated by the main shaft of the motor 3 to be tested during rotation;

[0045] At the same time, a load part 4 is provided on the side of the force sensor 23 away from the motor 3 to be tested, and the load part 4 is used to apply resistance to the motor 3 to be tested, so as to simulate various load conditions that the motor 3 to be tested may encounter in the actual working environment, and then accurately evaluate the rotation performance and load capacity of the motor.

[0046] The load part 4 includes two sets of bases 41, which are fixedly mounted on the test bench 1 at a side away from the motor 3 to be tested, and a slide groove is provided on the base 41, and a centrally penetrating housing 42 is installed in the slide groove, and the housing 42 is suitable for rotating in the slide groove;

[0047] At the same time, a connecting shaft 421 is fixedly installed on one side of the housing 42, and the connecting shaft 421 is connected to the force sensor 23 through a coupling, so that the motor 3 to be tested can directly drive the housing 42 to rotate;

[0048] At the same time, a first motor 43 is fixedly installed on one side of the inner part of the shell 42 near the connecting shaft 421, and a connecting block 44 is fixedly installed on the output end of the first motor 43. A screw 441 is provided on the connecting block 44. The connecting block 44 is suitable for rotating under the drive of the first motor 43. At the same time, an extension block 45 adapted to the inner diameter size of the shell 42 is slidably installed in the shell 42, and a guide groove (not shown in the figure) is provided on the inner wall of the shell 42 at a position away from the connecting shaft 421. The guide groove is used to guide the movement of the extension block 45;

[0049] At the same time, a through thread groove 451 is provided inside the extension block 45, and the thread groove 451 is adapted to the screw rod 441. In the initial state, the extension block 45 and the screw rod 441 are connected together by threads. When the motor 3 to be tested needs to be tested, the motor 3 to be tested without a load is firstly subjected to an idling test, and the initial data of the motor 3 to be tested is recorded by the force sensor 23. After the idling test is completed, the load part 4 is connected to the force sensor 23, and then the motor 3 to be tested is started again, so that the motor 3 to be tested simulates the state under the load and is tested, and at this time the force sensor 23 records the test data again.

[0050] Then, the first motor 43 is controlled to drive the connecting block 44 to rotate. Since there is a threaded fit between the screw 441 and the thread groove 451 of the extension block 45, the rotation of the screw 441 will cause the extension block 45 to move along the axial direction of the screw 441 and gradually disengage from the outer shell 42, thereby extending the length of the outer shell 42. At this time, the load received by the motor 3 to be tested will gradually increase, thereby realizing a dynamic test of the motor 3 to be tested.

[0051] This testing method helps to observe the operating status and performance parameter changes of the motor 3 under different loads, helps to timely discover potential faults or performance bottlenecks of the motor, and provides a basis for fault diagnosis and maintenance of the motor.

[0052] At the same time, in order to make the test conditions of the motor 3 to be tested more abundant, improvements are made on the load part 4, specifically:

[0053] like Figure 1 , Figure 4-Figure 6 As shown, an additional component 5 is provided on the load part 4 near the force sensor 23, and the additional component 5 is used to change the radial distance of the load part 4, thereby increasing the test range of the motor 3 to be tested;

[0054] The additional component 5 includes a connecting shell 51, which is fixedly mounted on the outer shell 42 on a side close to the force sensor 23. A second motor 58 is mounted on the outer side of the connecting shell 51. A through hole 52 is provided at the center of the connecting shell 51. The through hole 52 is used for the connecting shaft 421 to pass through. A plurality of fixed grooves 53 are fixedly mounted inside the connecting shell 51. A plurality of push rods 54 are slidably mounted in the fixed grooves 53. An arc block 541 is provided on the side of the push rod 54 away from the fixed groove 53. In the initial state, the plurality of arc blocks 541 are in contact with each other and form a circular pipe.

[0055] At the same time, a first toothed disc 55 is rotatably connected to the outer side of the fixed groove 53, and a plurality of groups of arc grooves 551 are arranged on the first toothed disc 55 corresponding to the number of the push rods 54, and the arc grooves 551 have a first stationary point and a second stationary point, wherein the first stationary point is arranged at a position close to the center of the first toothed disc 55, and the second stationary point is arranged at a position close to the edge of the first toothed disc 55, and a second toothed disc 56 is arranged on one side of the first toothed disc 55, and the second toothed disc 56 is connected to the second motor 58, and the size of the second toothed disc 56 is smaller than the size of the first toothed disc 55 and meshes with the first toothed disc 55, and the second motor 58 controls the rotation of the second toothed disc 56, thereby driving the first toothed disc 55 to rotate;

[0056] At the same time, a shift block 57 is provided on the side of the arc groove 551 away from the fixed groove 53, and one end of the shift block 57 is fixedly mounted on the push rod 54. When the push rod 54 is in the retracted state, the shift block 57 is located at the first stationary point of the arc groove 551. When the first gear plate 55 rotates, the shift block 57 is restricted and shifted by the arc groove 551, and moves from the first stationary point of the arc groove 551 to the second stationary point. At the same time, as the shift block 57 moves, the push rod 54 will also slide in the fixed groove 53 driven by the shift block 57. When the shift block 57 is located at the second stationary point of the arc groove 551, the push rod 54 is completely ejected outward. At this time, the multiple groups of arc blocks 541 will also move and separate from each other driven by the push rod 54, thereby increasing the radial size of the load part 4 and increasing the test data of the motor 3 to be tested.

[0057] By providing the additional component 5 on the load part 4, the radial dimension of the load part 4 can be further changed, so that the load part 4 can be freely changed in size according to the model and size of the motor 3 to be tested, thereby increasing the scope and effect of the test.

[0058] Embodiment 2: Since the load part 4 is intended to simulate different working states of the object under test, and the workpiece represented by the load part 4 in actual use, as its output end extends, its center position often produces slight bending deformation (such as a longer pressure roller). This bending phenomenon may affect the load characteristics and torque output of the motor. In order to more accurately simulate this dynamic change process, the load part 4 is improved, specifically:

[0059] like Figure 7-Figure 9 As shown, the housing 42 is divided into a first housing 6, a second housing 61 and a third housing 62, and the first housing 6, the second housing 61 and the third housing 62 are all detachably connected, wherein the material of the first housing 6 and the third housing 62 is set to a hard steel structure, the first motor 43 and the connecting block 44 are both located inside the first housing 6, and the third housing 62 is used to lift and support the extension block 45, and the two sets of bases 41 are respectively installed at the bottom of the first housing 6 and the third housing 62 to support them;

[0060] The material of the second shell 61 is set to have an elastic rubber structure, and the diameter of the internal space of the second shell 61 is larger than the diameter of the extension block 45. At the same time, a top block 63 is set inside the second shell 61, and arc-shaped connectors 633 are set at both ends of the top block 63, and the two sets of connectors 633 are fixedly connected to the inner wall of the second shell 61;

[0061] At the same time, a first cut surface 7 is provided on the extension block 45, and the first cut surface 7 is located on the outer ring surface of the extension block 45 and does not extend into the position of the thread groove 451. At the same time, a protruding inclined block 71 is provided on the side of the first cut surface 7 close to the screw rod 441, and the inclined block 71 has a first end close to the position of the screw rod 441 and a second end away from the position of the screw rod 441, and the distance between the second end and the bottom of the first cut surface 7 is greater than the height between the first end and the bottom of the first cut surface 7. At the same time, a second cut surface 631 is provided on the top block 63, and the second cut surface 631 is in contact with the first cut surface 7, and is used to guide the movement of the extension block 45. In the initial position, the top block 63 is located on the end of the first cut surface 7 away from the screw rod 441. At the same time, an inclined groove 632 is provided through the center of the second cut surface 631, and the size of the inclined groove 632 is adapted to the size of the inclined block 71.

[0062] like Figure 10-12 As shown, when the test starts, as the first motor 43 drives the connecting block 44 to rotate, it drives the extending block 45 to gradually move away from the direction of the housing 42. At this time, friction is generated between the extending block 45 and the top block 63 and the extending block 45 gradually moves. When the extending length of the extending block 45 reaches a certain position, the first end of the inclined block 71 will contact the inclined groove 632 on the top block 63. As the extending block 45 continues to move, the inclined block 71 will gradually engage with the inclined groove 632. When the extending block 45 is extended to the limit distance, the first end of the inclined block 71 will gradually disengage from the inclined groove 632, and the first end of the inclined block 71 will gradually disengage from the inclined groove 632. The two ends will contact the inclined groove 632. Since the inclined block 71 and the inclined groove 632 are both inclined, when the extension block 45 moves from the first end to the second end of the inclined block 71, the top block 63 will be gradually pushed out toward the inner wall of the second shell 61 under the influence of the inclined block 71 and the inclined groove 632. At the same time, since the two inner walls of the second shell 61 are fixedly connected to the connecting head 633 of the top block 63, the top block 63 will cause the second shell 61 to have an arc-shaped deformation after being pushed out, so that the deformation of the load part 4 can be simulated, and the torque and load data of the load part 4 after deformation can be tested through the motor 3 to be tested.

[0063] Through the arc-shaped deformation design of the load part 4, the present device can more accurately simulate the slight bending deformation of the object under test caused by the extension of the output end during actual use, which helps to more accurately simulate the deformation of the load part 4 in actual work, so that the test results can more truly reflect the performance of the motor 3 under complex working conditions, and provide strong support for the design and optimization of the motor 3 under test.

[0064] In summary, by providing a load portion 4 with dynamically adjustable size, the device can more accurately simulate the changes of the object under test during actual use, which helps to more accurately evaluate the load characteristics and torque output of the motor, thereby improving the reliability and accuracy of the test.

[0065] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A motor rotation tester, characterized in that: include: A fixing plate (21), a motor to be tested (3) being arranged on the top of the fixing plate (21), a force sensor (23) being arranged on one side of the motor to be tested (3), and the force sensor (23) being connected to the motor to be tested (3); A housing (42), one side of the housing (42) is provided with a connecting shaft (421), and the connecting shaft (421) is connected to the force sensor (23); a first motor (43), the first motor (43) being arranged on a side of the housing (42) close to the connecting shaft (421), a connecting block (44) being installed on an output end of the first motor (43), and a screw (441) being arranged on the connecting block (44); An extension block (45), the extension block (45) being slidably mounted in the housing (42), the extension block (45) being provided with a through thread groove (451) inside, the thread groove (451) being adapted to the screw rod (441); When the motor to be tested (3) drives the housing (42) to rotate, the first motor (43) drives the connecting block (44) to rotate. Since there is threaded engagement between the screw rod (441) and the thread groove (451) of the extension block (45), the rotation of the screw rod (441) causes the extension block (45) to move along the axial direction of the screw rod (441) and gradually come out of the housing (42), thereby extending the length of the housing (42). The outer shell (42) comprises a first shell (6), a second shell (61) and a third shell (62); a top block (63) is arranged inside the second shell (61); two ends of the top block (63) are connected to the inner wall of the second shell (61); The extension block (45) is provided with a first cut surface (7), the first cut surface (7) is located on the outer ring surface of the extension block (45), a slanted block (71) is provided on the side of the first cut surface (7) close to the screw rod (441), a second cut surface (631) is provided on the top block (63), the second cut surface (631) is in contact with the first cut surface (7), an slanted groove (632) is provided through the center of the second cut surface (631), and the size of the slanted groove (632) is adapted to the size of the slanted block (71).

2. A motor rotation tester according to claim 1, characterized in that: The first shell (6) and the third shell (62) are made of hard steel structures, and the material of the second shell (61) is set to be a rubber structure.

3. A motor rotation tester according to claim 2, characterized in that: Arc-shaped connecting heads (633) are provided at both ends of the top block (63), and two groups of the connecting heads (633) are connected to the inner wall of the second shell (61).

4. The motor rotation tester according to claim 1, characterized in that: A connecting shell (51) is arranged on the outer shell (42) at a position close to the force sensor (23), a plurality of groups of fixing grooves (53) are fixedly installed inside the connecting shell (51), a plurality of groups of push rods (54) are slidably installed in the fixing grooves (53), and an arc block (541) is arranged on a side of the push rod (54) away from the fixing grooves (53); The outer side of the fixed groove (53) is rotatably connected with a first toothed disc (55), and the first toothed disc (55) is provided with a plurality of groups of arc grooves (551) corresponding to the number of the push rods (54), and a shifting block (57) is provided on the side of the arc groove (551) away from the fixed groove (53), and one end of the shifting block (57) is mounted on the push rod (54); A second toothed disc (56) is provided on one side of the first toothed disc (55); the size of the second toothed disc (56) is smaller than that of the first toothed disc (55) and is meshed with the first toothed disc (55).

5. A motor rotation tester according to claim 4, characterized in that: A second motor (58) is installed on the outer side of the connecting shell (51), and an output end of the second motor (58) is connected to the second gear disc (56).

6. A motor rotation tester according to claim 4, characterized in that: A through hole (52) is provided at the center of the connecting shell (51), and the through hole (52) is adapted to the size of the connecting shaft (421).

7. The motor rotation tester according to claim 1, characterized in that: A connecting frame (22) is provided on the fixing plate (21) at one side of the motor (3) to be tested, and the force sensor (23) is installed on the top of the connecting frame (22).

8. The motor rotation tester according to claim 7, characterized in that: Two groups of bases (41) are installed on a side of the fixing plate (21) away from the connecting frame (22), and a sliding groove is provided on the base (41).

Images