Testing device
By designing a test device including a mounting base, a shaft assembly, a tension detection assembly and a torque detection assembly, the simultaneous measurement of motor tension and torque is realized, solving the cumbersome test problems in the prior art and improving the testing efficiency.
Patent Information
- Application Number
- CN202422197948.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Existing test devices require the motor tension and torque to be measured separately, resulting in cumbersome testing process.
A test device is designed, including a mounting base, a shaft assembly, a tension detection assembly and a torque detection assembly. Through the rotation and sliding of the shaft assembly, combined with the tension detection assembly and a torque detection assembly, the simultaneous measurement of the tension and torque of the motor is achieved.
Simplifies the motor testing process, shortens the test time and improves the testing efficiency.
Smart Images
Figure CN223072761U_ABST
Abstract
Description
Technical Field
[0001] An embodiment of the utility model relates to the technical field of UAV power testing, in particular to a testing device. Background Art
[0002] In application fields such as geographical mapping, agricultural and forestry plant protection, patrol inspection, emergency disaster relief, and express delivery materials, the market is in urgent need of heavy-load application UAVs, and solving the payload problem is the key to the rapid development of heavy-load UAVs. The payload capacity of a UAV depends on the pulling force and torque of the motor. During the R & D process of a UAV motor, it is necessary to measure parameters such as its pulling force and torque, which requires a corresponding measurement platform to measure various parameters of the motor.
[0003] During the implementation of the embodiment of the utility model, the inventor found that: in the existing testing devices, for different parameters of the motor, corresponding testing devices need to be used for measurement, resulting in a cumbersome measurement process. Summary of the Utility Model
[0004] The main technical problem to be solved by the embodiment of the utility model is to provide a testing device that can simultaneously test the pulling force and torque of a motor to be tested, which is beneficial to simplifying the testing process of the motor to be tested.
[0005] To solve the above technical problem, a technical solution adopted by the embodiment of the utility model is: to provide a testing device, including a mounting base, a rotating shaft assembly, a pulling force detection component, and a torque detection component. The mounting base is provided with a receiving cavity, a rotating hole, and an avoidance opening, and both the rotating hole and the avoidance opening communicate with the receiving cavity; at least part of the rotating shaft assembly is received in the receiving cavity, at least part of the rotating shaft assembly passes through the rotating hole and protrudes from the mounting base, and the part of the rotating shaft assembly protruding from the mounting base is used to mount the motor to be tested. The rotating shaft assembly can rotate relative to the mounting base around the axis of the rotating hole, and along a first direction, the rotating shaft assembly can slide relative to the mounting base, and the first direction is parallel to the axis of the rotating hole; the pulling force detection component is mounted on the rotating shaft assembly and is used to detect the pulling force of the motor to be tested; the torque detection component includes a connecting rod and a pressure sensor. One end of the connecting rod is provided on the rotating shaft assembly, the other end passes through the avoidance opening and at least part of it protrudes from the mounting base, and the pressure sensor is fixed to the mounting base. When the rotating shaft assembly rotates relative to the mounting, the end of the connecting rod away from the rotating shaft assembly presses against the pressure sensor, wherein the connecting rod is perpendicular to the axis of the rotating hole.
[0006] In some embodiments, the connecting rod includes a first shaft portion and a second shaft portion, and one end of the first shaft portion is connected to one end of the second shaft portion; the rotating shaft assembly is provided with a mounting hole, and the torque detection component further includes a screwing member. One end of the first shaft portion abuts against the rotating shaft assembly, the second shaft portion passes through the mounting hole and at least part of it protrudes from the mounting hole, and the screwing member is screwed to the part of the second shaft portion protruding from the mounting hole. The end of the first shaft portion away from the second shaft portion is used to press against the pressure sensor.
[0007] In some embodiments, the torque detection assembly further includes a fixing member and a resisting member. The fixing member is fixed to the mounting seat, the pressure sensor is mounted on the fixing member, the resisting member is mounted on the pressure sensor, and the connecting rod transmits the pressure to the pressure sensor through the resisting member.
[0008] In some embodiments, the torque detection assembly further includes a first bearing. The first bearing is disposed at an end of the connecting rod away from the rotating shaft assembly, and the connecting rod transmits the pressure to the pressure sensor through the first bearing and the resisting member.
[0009] In some embodiments, the rotating shaft assembly includes a first linear bearing and a rotating shaft. The first linear bearing is mounted on the mounting seat, and at least a part of the first linear bearing is received in the rotating hole. The rotating shaft passes through the first linear bearing, and at least a part of the rotating shaft protrudes from the mounting seat. The part of the rotating shaft protruding from the mounting seat is used to mount the motor under test, and the rotating shaft is slidable relative to the first linear bearing in a first direction.
[0010] In some embodiments, the first linear bearing includes a bearing portion and a flange portion. One end of the bearing portion is connected to the flange portion. The bearing portion is received in the rotating hole, the flange portion is fixedly mounted on an end of the mounting seat facing the motor under test, and the rotating shaft passes through the bearing portion and the flange portion.
[0011] In some embodiments, the mounting seat is further provided with a rotating groove. The rotating groove and the rotating hole are opposite in the first direction, and the rotating groove communicates with the accommodating cavity. The rotating shaft assembly further includes a second linear bearing. The second linear bearing is received in the rotating groove, and at least a part of the rotating shaft is inserted into the second linear bearing.
[0012] In some embodiments, the testing device includes an adapter assembly. The adapter assembly is mounted on an end of the rotating shaft assembly protruding from the rotating hole, and the adapter assembly is used to mount the motor under test.
[0013] In some embodiments, the testing device further includes a falling prevention ring. The falling prevention ring is mounted on an end of the mounting seat facing the adapter assembly. Along the first direction, the thickness of the bearing portion is less than the width of the falling prevention ring.
[0014] In some embodiments, the tension detection assembly includes a tension sensor and a tension ring. The tension sensor is mounted on the mounting seat, and the tension ring is mounted on the rotating shaft assembly. When the motor under test drives the rotating shaft assembly to slide in the first direction, the tension ring abuts against and presses the pressure sensor.
[0015] The beneficial effects of the embodiments of the present utility model are as follows: Different from the prior art, in the embodiments of the present utility model, by providing a receiving cavity, a rotating hole, and an avoidance opening on the mounting base, both the rotating hole and the avoidance opening are communicated with the receiving cavity, at least part of the rotating shaft assembly is received in the receiving cavity, and at least part of the rotating shaft assembly passes through the rotating hole and protrudes from the mounting base. The part of the rotating shaft assembly protruding from the mounting base is used to mount the motor under test. The rotating shaft assembly can rotate relative to the mounting base around the axis of the rotating hole, and along the first direction, the rotating shaft assembly can slide relative to the mounting base; then the tensile force detection component is installed on the rotating shaft assembly, and the tensile force of the motor under test is detected by the tensile force detection component; one end of the connecting rod is arranged on the rotating shaft assembly, and the other end passes through the avoidance opening and protrudes from the mounting base. When the motor under test operates, the motor under test transmits torque to the rotating shaft assembly, causing the rotating shaft assembly to rotate relative to the mounting base, so that the end of the connecting rod away from the rotating shaft assembly presses the pressure sensor. The torque of the motor under test is obtained through the pressure detected by the pressure sensor and the length of the force arm between the pressure sensor and the rotating shaft assembly, thereby realizing the test of the tensile force and torque of the motor under test, and there is no need to separately test the tensile force and torque of the motor under test, which is beneficial to simplifying the test process and shortening the test time. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw to actual scale.
[0017] Figure 1 It is a schematic structural diagram of the test device provided in the embodiments of the present utility model when the motor under test is installed, from the first perspective;
[0018] Figure 2 It is an exploded structural diagram of the test device provided in the embodiments of the present utility model;
[0019] Figure 3 It is a schematic structural diagram of the test device provided in the embodiments of the present utility model when the motor under test is installed, from the second perspective;
[0020] Figure 4 It is along Figure 3 The structural diagram after sectioning along A-A in
[0021] REFERENCE NUMERALS IN THE DRAWINGS
[0022] DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] To facilitate the understanding of the present utility model, the present utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.
[0025] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0026] Please refer to Figure 1 and Figure 2, the test device 100 includes: a mounting base 1, a rotating shaft assembly 2, a tensile force detection assembly 3, and a torque detection assembly 4. The rotating shaft assembly 2 is rotatably arranged on the mounting base 1, and a part of the rotating shaft assembly 2 is arranged inside the mounting base 1, and the other part protrudes from the mounting base 1. The part of the rotating shaft assembly 2 that protrudes from the mounting base 1 is used to mount the motor under test 200. Along the first direction X, the rotating shaft assembly 2 can also slide relative to the mounting base 1, and the first direction X is parallel to the axis of the rotating shaft assembly 2. The tensile force detection assembly 3 is arranged on the rotating shaft assembly 2. When the motor under test 200 operates, the motor under test 200 applies a tensile force along the first direction X to the rotating shaft assembly 2, causing the rotating shaft assembly 2 to slide along the first direction X, thereby squeezing the tensile force detection assembly 3, enabling the tensile force detection assembly 3 to detect the tensile force applied by the motor under test 200 to the rotating shaft assembly 2, and realizing the tensile force test of the motor under test 200. The torque detection assembly 4 is arranged on the mounting base 1, and it is used to test the torque applied by the motor under test 200 to the rotating shaft assembly 2, thereby realizing the torque test of the motor under test 200. In this embodiment, by arranging the tensile force detection assembly 3 and the torque detection assembly 4 on the rotating shaft assembly 2 respectively, testing the tensile force of the motor under test 200 through the tensile force detection assembly 3, and testing the torque of the motor under test 200 through the torque detection assembly 4, the tensile force and torque of the motor under test 200 are tested simultaneously, thus simplifying the test process of the motor under test 200.
[0027] For the above-mentioned mounting base 1, please refer to Figure 1 , Figure 2 and Figure 4, the mounting base 1 includes a first base body 11 and a second base body 12, and the first base body 11 and the second base body 12 are fixedly connected by screws (not labeled). The first base body 11 and the second base body 12 jointly form a receiving cavity 13. The first base body 11 is provided with a rotating hole 111, and the rotating hole 111 communicates with the receiving cavity 13. One end of the rotating hole 111 away from the receiving cavity 13 communicates with the outside. At least part of the rotating shaft assembly 2 is received in the receiving cavity 13, and at least part of the rotating shaft assembly 2 passes through the rotating hole 111 and protrudes from the first base body 11. Among them, the motor 200 to be measured is installed on the part of the rotating shaft assembly 2 that protrudes from the first base body 11. The rotating shaft assembly 2 can rotate relative to the first base body 11 around the axis of the rotating hole 111, and the rotating hole 111 is coaxial with the rotating shaft assembly 2. The tensile force detection component 3 is received in the receiving cavity 13. When the motor 200 to be measured operates, the motor 200 to be measured drives the rotating shaft assembly 2 to slide along the first direction X, so that the rotating shaft assembly 2 and the inner wall of the first base body 11 jointly squeeze the tensile force detection component 3, thereby measuring the tensile force applied by the motor 200 to be measured to the rotating shaft assembly 2, and completing the tensile force test of the motor 200 to be measured. The second base body 12 is provided with an avoidance opening 121, and the avoidance opening 121 communicates the receiving cavity 13 with the outside. One end of the torque detection component 4 is connected to the rotating shaft assembly 2, and the other end of the torque detection component 4 passes through the avoidance opening 121, and the other end of the torque detection component 4 is installed on the second base body 12. When the motor 200 to be measured operates, a torque is applied to the rotating shaft assembly 2, so that the rotating shaft assembly 2 rotates around the axis of the rotating hole 111 or has a tendency to rotate. At this time, the torque detection component 4 can detect the torque applied by the rotating shaft assembly 2 to it, thereby realizing the measurement of the torque.
[0028] In some embodiments, please refer to Figure 4 , the second base body 12 is provided with a rotating groove 122, the rotating groove 122 communicates with the receiving cavity 13, the rotating groove 122 and the rotating hole 111 are located on both sides of the receiving cavity 13 respectively, and the rotating groove 122 is coaxial with the rotating hole 111. At least part of the rotating shaft assembly 2 is inserted into the rotating groove 122, and the rotating shaft assembly 2 can rotate around the axis of the rotating groove 122. In this embodiment, by providing the rotating groove 122 and at least part of the rotating shaft assembly 2 being inserted into the rotating groove 122, the rotating shaft assembly 2 can rotate around the axis of the rotating groove 122. At the same time, in cooperation with the above-mentioned rotating hole 111, the stability of the rotating shaft assembly 2 during the rotation relative to the mounting base 1 can be improved, the risk of the rotating shaft assembly 2 swinging up and down can be reduced, and it is beneficial to improve the accuracy of the torque test of the torque detection component 4 for the motor 200 to be measured.
[0029] For the above-mentioned rotating shaft assembly 2, please refer to Figure 4, the rotating shaft assembly 2 includes a first linear bearing 21 and a rotating shaft 22, the first linear bearing 21 is mounted on the first seat body 11, and at least a part of the first linear bearing 21 is inserted into the rotating hole 111. The tension detection assembly 3 is mounted on the rotating shaft 22, and one end of the torque detection assembly 4 is arranged on the rotating shaft 22. The rotating shaft 22 is penetrated by the first linear bearing 21, and the rotating shaft 22 can rotate around the axis of the rotating hole 111 and slide along the first direction X relative to the mounting seat 1 through the first linear bearing 21. In this embodiment, by providing the first linear bearing 21, the stability of the rotating shaft 22 relative to the mounting seat 1 during the rotation and sliding process can be improved, which is conducive to improving the detection accuracy of the tension detection assembly 3 and the torque detection assembly 4.
[0030] For the first linear bearing 21 mentioned above, please refer to Figure 4 The first linear bearing 21 includes a bearing portion 211 and a flange portion 212, one end of the bearing portion 211 is connected to the flange portion 212, the bearing portion 211 is inserted into the rotating hole 111, the flange portion 212 is located outside the rotating hole 111, the flange portion 212 is fixed to the surface of the first seat body 11 facing the motor 200 to be tested, and the rotating shaft 22 is passed through the bearing portion 211 and the flange portion 212 along the first direction X, so that the rotating shaft 22 can rotate around the axis of the rotating hole 111 and slide along the first direction X. In this embodiment, by fixing the flange portion 212 to the surface of the first seat body 11 facing the motor 200 to be tested, the risk of the rotating shaft 22 driving the first linear bearing 21 to slide away from the rotating hole 111 during the sliding process of the rotating shaft 22 along the first direction X can be reduced.
[0031] In some embodiments, the flange portion 212 is connected and fixed to the first base body 11 by screws (not numbered).
[0032] In some embodiments, see Figure 4 The rotating shaft assembly 2 further includes a second linear bearing 23, which is disposed in the above-mentioned rotating groove 122, and one end of the rotating shaft 22 away from the motor 200 to be tested is plugged into the second linear bearing 23, and the rotating shaft 22 can rotate relative to the second seat body 12 and slide along the first direction X through the second linear bearing 23. In this embodiment, by providing the second linear bearing 23, and plugging one end of the rotating shaft 22 away from the motor 200 to be tested into the second linear bearing 23, the stability of the rotating shaft 22 during rotation and sliding can be improved, which is conducive to improving the accuracy of the tension detection assembly 3 and the torque detection assembly 4 in detecting the tension and torque of the motor 200 to be tested.
[0033] For the above-mentioned tension test component 3, please refer to Figure 2 and Figure 4, the tensile force detection component 3 includes a tensile force sensor 31 and a tensile force ring 32. The tensile force sensor 31 is installed on the first seat body 11 and is received in the accommodation cavity 13. The rotating shaft 22 passes through the tensile force sensor 31. The tensile force ring 32 is sleeved on the rotating shaft 22. Along the first direction X, the tensile force sensor 31 is located between the first mounting seat 1 and the tensile force ring 32. So that when the motor 200 to be tested is in the working state, the motor 200 to be tested outputs a tensile force to the rotating shaft 22, causing the rotating shaft 22 to slide relative to the first seat body 11 along the first direction X, thereby driving the tensile force ring 32 to press the tensile force sensor 31 along the first direction X, so that the tensile force sensor 31 can detect the tensile force output by the motor 200 to be tested to the rotating shaft 22.
[0034] It should be noted that the tensile force detected by the tensile force sensor 31 in this application is the sum of the output tensile force of the motor 200 to be tested, the self-weight of the rotating shaft 22, and the frictional force between the rotating shaft 22 and the two bearings. However, compared with the output tensile force of the motor 200 to be tested, the self-weight of the rotating shaft 22 and the frictional force between the rotating shaft 22 and the two bearings are very small and can be basically ignored. Therefore, in this application, the tensile force measured by the tensile force sensor 31 can be directly regarded as the output tensile force of the motor 200 to be tested.
[0035] In some embodiments, please refer to Figure 4 , the tensile force detection component 3 further includes a fixing seat 33 and an abutting ring 34. The abutting ring 34 is sleeved on the rotating shaft 22 and is fixed to the side of the tensile force sensor 31 facing the tensile force ring 32. The fixing seat 33 is sleeved on the rotating shaft 22 and is fixed to the rotating shaft 22. The fixing seat 33 is provided with an annular groove 331. The tensile force ring 32 is received in the annular groove 331, and a plurality of balls 321 are provided at one end of the tensile force ring 32 facing the abutting ring 34. The plurality of balls 321 are used to form a rolling connection with the abutting ring 34, which is beneficial to reducing the frictional resistance between the tensile force ring 32 and the abutting ring 34 during the rotation of the rotating shaft 22, so that the torque measured by the torque detection component 4 is more accurate.
[0036] For the above torque detection component 4, please refer to Figure 4The torque detection assembly 4 includes a connecting rod 41 and a pressure sensor 42. One end of the connecting rod 41 is fixed to the rotating shaft 22, and the other end of the connecting rod 41 extends out of the second seat body 12 from the avoidance opening 121 of the above-mentioned second seat body 12, and the connecting rod 41 is roughly perpendicular to the axis of the rotating shaft 22. The pressure sensor 42 is installed on the outer surface of the second seat body 12. When the motor 200 to be tested is running, the motor 200 to be tested applies torque to the rotating shaft 22. Under the action of the torque, the rotating shaft 22 rotates relative to the mounting seat 1 or has a tendency to rotate relative to the mounting seat 1, thereby driving the connecting rod 41 to swing around the axis of the rotating shaft 22 or has a tendency to swing. At this time, the end of the connecting rod 41 away from the rotating shaft 22 presses the pressure sensor 42, so that the pressure sensor 42 can detect the pressure F applied to it by the connecting rod 41. The relationship between the pressure F and the torque N applied to the rotating shaft 22 by the motor 200 to be tested is: N=F*L, L is the distance between the contact point between the connecting rod 41 and the pressure sensor 42 and the axis of the rotating shaft 22, that is, the lever arm length of the torque N. Since the value of the lever arm L can be measured and is fixed, when the pressure sensor 42 detects the value of the pressure F applied to it by the connecting rod 41, the torque N applied to the rotating shaft 22 by the motor 200 to be tested can be calculated. In this embodiment, the torque of the motor 200 to be tested is measured by using the connecting rod 41 and the pressure sensor 42 , which has a simple structure and high measurement accuracy.
[0037] In some embodiments, see Figure 4 The connecting rod 41 includes a first shaft portion 411 and a second shaft portion 412, one end of the first shaft portion 411 is connected to one end of the second shaft portion 412, and the diameter of the first shaft portion 411 is greater than the diameter of the second shaft portion 412. The torque detection component 4 also includes a screw connection 43, the rotating shaft 22 is provided with a mounting hole 221, the diameter of the first shaft portion 411 is greater than the diameter of the mounting hole 221, the second shaft portion 412 passes through the mounting hole 221, one end of the first shaft portion 411 abuts against the rotating shaft 22, the second shaft portion 412 protrudes from the mounting hole 221 and the end away from the first shaft portion 411, and the screw connection 43 is screwed to the part of the second shaft portion 412 protruding from the mounting hole 221, thereby achieving the fixation between the connecting rod 41 and the rotating shaft 22. In this embodiment, the connecting rod 41 is fixed to the rotating shaft 22 by the screw connection 43, the structure is simple, and the assembly is convenient.
[0038] In some embodiments, see Figure 4, the torque detection assembly 4 further includes a fixing member 44 and a resisting member 45. The fixing member 44 is fixed to the second body 12, the pressure sensor 42 is installed on the fixing member 44, and the resisting member 45 is installed at one end of the pressure sensor 42 facing away from the fixing member 44. When the motor 200 to be tested operates, the connecting rod 41 abuts against the resisting member 45, and the connecting rod 41 transmits the pressure to the pressure sensor 42 through the resisting member 45. In this embodiment, by providing the resisting member 45, it is beneficial to increase the area for the connecting rod 41 to abut, facilitating the pressure sensor 42 to detect the pressure exerted on it by the connecting rod 41.
[0039] In some embodiments, the resisting member 45 is generally annular, and the resisting member 45 surrounds one end of the first shaft portion 411 away from the second shaft portion 412 to facilitate the first shaft portion 411 to abut against the abutting member.
[0040] In some embodiments, please refer to Figure 4 , the torque detection assembly 4 includes a first bearing 46. The first bearing 46 is installed at one end of the first shaft portion 411 away from the second shaft portion 412, and the connecting rod 41 transmits the pressure to the pressure sensor 42 through the first bearing 46 and the resisting member 45. In this embodiment, by providing the first bearing 46, a rolling contact is formed between the first bearing 46 and the resisting member 45, which is beneficial to reducing the friction between the first bearing 46 and the resisting member 45, and further reducing the pressure loss between the connecting rod 41 and the resisting member 45, and is beneficial to improving the accuracy of the pressure measured by the pressure sensor 42.
[0041] In some embodiments, please refer to Figure 4 , the testing device 100 further includes an adapter assembly 5. The adapter assembly 5 is installed at one end of the rotating shaft 22 protruding from the rotating hole 111, and the motor 200 to be tested is installed on the side of the adapter assembly 5 facing away from the rotating shaft 22, so that the motor 200 to be tested can transmit the pulling force and torque to the rotating shaft 22 through the adapter assembly 5. In this embodiment, by providing the adapter assembly 5 and installing the motor 200 to be tested on the adapter assembly 5, the area for installing the motor 200 to be tested is increased, facilitating the connection and fixation between the motor 200 to be tested and the rotating shaft 22.
[0042] In some embodiments, the adapter assembly 5 includes a first adapter plate 51 and a second adapter plate 52. The first adapter plate 51 is fixed to the rotating shaft 22, and the second adapter plate 52 is fixed to the side of the first adapter plate 51 facing away from the rotating shaft 22. The motor 200 to be tested is installed on the surface of the second adapter plate 52 facing away from the first adapter plate 51.
[0043] In some embodiments, please refer to Figure 4, the testing device 100 further includes a falling prevention ring 6, and the falling prevention ring 6 is installed on the surface of the first seat body 11 facing the first adapter plate 51. When observed along the first direction X, the falling prevention ring 6 surrounds the rotation shaft 22. In the first direction X, the thickness of the bearing portion 211 is less than the width of the falling prevention ring 6. With such a setting, when the rotation shaft 22 slides along the first direction X, the falling prevention ring 6 can limit the sliding distance of the rotation shaft 22, reducing the risk that the first adapter plate 51 fixed on the rotation shaft 22 collides with the bearing portion 211, thereby protecting the first linear bearing 21.
[0044] In the embodiment of the present utility model, by providing a receiving cavity 13, a rotation hole 111 and an avoidance opening 121 in the mounting seat 1, both the rotation hole 111 and the avoidance opening 121 communicate with the receiving cavity 13, at least part of the rotating shaft assembly 2 is received in the receiving cavity 13, and at least part of the rotating shaft assembly 2 passes through the rotation hole 111 and protrudes from the mounting seat 1. The part of the rotating shaft assembly 2 protruding from the mounting seat 1 is used to mount the motor under test 200. The rotating shaft assembly 2 can rotate relative to the mounting seat 1 around the axis of the rotation hole 111, and along the first direction X, the rotating shaft assembly 2 can slide relative to the mounting seat 1; then the tensile force detection component 3 is installed on the rotating shaft assembly 2, and the tensile force of the motor under test 200 is detected through the tensile force detection component 3; one end of the connecting rod 41 is arranged on the rotating shaft assembly 2, and the other end passes through the avoidance opening 121 and protrudes outside the mounting seat 1. When the motor under test 200 operates, the motor under test 200 applies a torque to the rotating shaft assembly 2, causing the rotating shaft assembly 2 to rotate relative to the mounting seat 1, so that the end of the connecting rod 41 away from the rotating shaft assembly 2 presses the pressure sensor 42. The torque of the motor under test 200 is obtained through the pressure received by the pressure sensor 42 and the lever arm length between the pressure sensor 42 and the rotating shaft assembly 2, thereby realizing the testing of the tensile force and torque of the motor under test 200, without separately testing the tensile force and torque of the motor under test 200, which is beneficial to simplifying the testing process and shortening the testing time.
[0045] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.
Claims
1. A test device, characterized in that, Comprising: A mounting base, provided with a receiving cavity, a rotation hole and an avoidance opening, both the rotation hole and the avoidance opening communicating with the receiving cavity; A rotating shaft assembly, at least part of which is received in the receiving cavity, at least part of which passes through the rotation hole and protrudes from the mounting base, the part of the rotating shaft assembly protruding from the mounting base being used for mounting a motor to be tested, the rotating shaft assembly being rotatable relative to the mounting base about the axis of the rotation hole, and in a first direction, the rotating shaft assembly being slidable relative to the mounting base, the first direction being parallel to the axis of the rotation hole; A tensile force detection assembly, mounted on the rotating shaft assembly, for detecting the tensile force of the motor to be tested; A torque detection assembly, comprising a connecting rod and a pressure sensor, one end of the connecting rod being provided on the rotating shaft assembly, the other end passing through the avoidance opening and at least part of it protruding from the mounting base, the pressure sensor being fixed to the mounting base, when the rotating shaft assembly rotates relative to the mounting, the end of the connecting rod away from the rotating shaft assembly presses against the pressure sensor, wherein the connecting rod is perpendicular to the axis of the rotation hole.
2. The testing device according to claim 1, wherein: The connecting rod comprises a first shaft portion and a second shaft portion, one end of the first shaft portion being connected to one end of the second shaft portion; The rotating shaft assembly is provided with a mounting hole, the torque detection assembly further comprising a screwing member, one end of the first shaft portion abutting against the rotating shaft assembly, the second shaft portion passing through the mounting hole and at least part of it protruding from the mounting hole, the screwing member being screwed to the part of the second shaft portion protruding from the mounting hole, the end of the first shaft portion away from the second shaft portion being used for pressing against the pressure sensor.
3. The testing device according to claim 1, wherein: The torque detection assembly further comprises a fixing member and a holding member, the fixing member being fixed to the mounting base, the pressure sensor being mounted on the fixing member, the holding member being mounted on the pressure sensor, the connecting rod transmitting pressure to the pressure sensor through the holding member.
4. The testing device according to claim 3, wherein: The torque detection assembly further comprises a first bearing, the first bearing being provided at the end of the connecting rod away from the rotating shaft assembly, the connecting rod transmitting pressure to the pressure sensor through the first bearing and the holding member.
5. The testing device according to claim 1, wherein: The rotating shaft assembly comprises a first linear bearing and a rotating shaft, the first linear bearing being mounted on the mounting base, and at least part of the first linear bearing being received in the rotation hole, the rotating shaft passing through the first linear bearing, at least part of the rotating shaft protruding from the mounting base, the part of the rotating shaft protruding from the mounting base being used for mounting a motor to be tested, the rotating shaft being slidable relative to the first linear bearing in the first direction.
6. The testing device according to claim 5, wherein: The first linear bearing includes a bearing portion and a flange portion. One end of the bearing portion is connected to the flange portion. The bearing portion is received in the rotation hole. The flange portion is fixedly mounted on one end of the mounting seat facing the motor to be tested. The rotating shaft passes through the bearing portion and the flange portion.
7. The testing device according to claim 5, wherein the mounting seat is further provided with a rotation groove. The rotation groove and the rotation hole are opposite to each other in a first direction. The rotation groove communicates with the accommodation cavity; the rotating shaft assembly further includes a second linear bearing. The second linear bearing is received in the rotation groove. At least a part of the rotating shaft is inserted into the second linear bearing.
8. The testing device according to claim 6, wherein the testing device includes an adapter assembly. The adapter assembly is mounted on one end of the rotating shaft assembly protruding from the rotation hole. The adapter assembly is used for mounting the motor to be tested.
9. The testing device according to claim 8, wherein the testing device further includes a fall prevention ring. The fall prevention ring is mounted on one end of the mounting seat facing the adapter assembly. Along the first direction, the thickness of the bearing portion is less than the width of the fall prevention ring.
10. The testing device according to claim 1, wherein the tensile force detection assembly includes a tensile force sensor and a tensile force ring. The tensile force sensor is mounted on the mounting seat. The tensile force ring is mounted on the rotating shaft assembly. When the motor to be tested drives the rotating shaft assembly to slide in the first direction, the tensile force ring abuts against and presses the pressure sensor.