Test device

Abstract

The utility model discloses test equipment, and relates to the technical field of test. The test equipment comprises a platform device, a mounting frame, a driving device, a bearing seat, an output shaft, a torque loading device and a bending moment loading device, and when the driving device drives the speed reducer to work, the speed reducer drives the output shaft to rotate. The torque loading device is connected with the output shaft, so that the torque is transmitted to the speed reducer through the output shaft, and the working condition that the speed reducer bears different torques during operation can be simulated by changing the magnitude of the output force. The output assembly of the bending moment loading device can apply force in the direction perpendicular to the rotating axis of the output shaft to the bearing assembly, and therefore the bending moment generated by the force can be transmitted to the speed reducer through the output shaft. By changing the magnitude of the output force, the working condition that the speed reducer bears different bending moments during operation can be simulated. Therefore, the test equipment provided by the embodiment of the utility model can simulate the operation conditions of the speed reducer under different bending moments and different torques at the same time, so that the performance of the speed reducer can be evaluated more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a testing device. Background Art

[0002] Reducer such as harmonic reducer and RV reducer needs to be simulated and tested under corresponding working conditions to check whether the performance of the reducer can meet the corresponding standards. The existing testing devices can simulate fewer situations. For example, they can only test the running conditions of the reducer under different bending moments or different torques, and it is difficult to accurately reflect the actual working performance of the reducer. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a testing device, which can simultaneously simulate the running conditions of the reducer under different bending moments and different torques, so as to more accurately evaluate the performance of the reducer.

[0004] The testing device according to the embodiment of the utility model is applied to test the reducer and includes: a platform device;

[0005] A mounting frame for mounting the reducer, which is connected to the platform device;

[0006] A driving device, which is connected to the platform device, and the driving device is drivingly connected to the input end of the reducer;

[0007] A bearing seat, which is connected to the platform device and is spaced from the mounting frame;

[0008] An output shaft, which is rotatably connected to the bearing seat and one end of which is used to be connected to the output end of the reducer;

[0009] A torque loading device, which is connected to the output shaft, and the torque loading device is used to apply torque to the output shaft;

[0010] A bending moment loading device, which includes a first bracket, an output assembly and a bearing assembly. The first bracket is mounted on the platform device, the bearing assembly is sleeved on the output shaft, and the output assembly is connected to the first bracket. The output assembly can act on the bearing assembly to apply a bending moment to the output shaft in a rotating state.

[0011] The testing device according to the embodiment of the utility model has at least the following beneficial effects:

[0012] The mounting frame is connected to the platform device through setting. The mounting frame is used for mounting the speed reducer. The output shaft is rotatably connected to the bearing seat and one end thereof is connected to the output end of the speed reducer. The bearing seat is used for supporting the output shaft to improve the stability of the output shaft during operation. When the driving device drives the input end of the speed reducer to work, the speed reducer drives the output shaft to rotate. The torque loading device is connected to the output shaft, so that the torque is transmitted to the speed reducer through the output shaft. By changing the magnitude of the output force, the working conditions of the speed reducer under different torques during operation can be simulated. The output component of the bending moment loading device is connected to the first bracket. The bearing assembly is sleeved on the output shaft, and the output component can act on the bearing assembly, so that the bearing assembly is subjected to a force, and the bearing assembly then transmits the force to the output shaft, so that the bending moment generated by the force is transmitted to the speed reducer through the output shaft. By changing the magnitude of the force exerted by the output component on the bearing assembly, the working conditions of the speed reducer under different bending moments during operation can be simulated. Therefore, the test equipment of this embodiment can simultaneously simulate the operation conditions of the speed reducer under different bending moments and different torques, so as to more accurately evaluate the performance of the speed reducer.

[0013] According to some embodiments of the present invention, the bearing assembly includes an inner ring, an outer ring and a plurality of rolling elements. The outer ring is sleeved on the inner ring, and the plurality of rolling elements are arranged between the outer ring and the inner ring. The inner ring is sleeved on the output shaft, and an abutting portion is provided on the outer side wall of the outer ring. The abutting portion is used for abutting and cooperating with the output component.

[0014] According to some embodiments of the present invention, the platform device includes a main platform. A first guide rail is provided on the upper end surface of the main platform. The extending direction of the first guide rail is the same as the length direction of the output shaft. The outer ring is connected to the first bracket. The first bracket is slidably connected to the first guide rail and can drive the bearing assembly to move along the length direction of the output shaft.

[0015] According to some embodiments of the present invention, the bending moment loading device further includes a bending moment sensor. The bending moment sensor is connected to the output end of the output component and can abut and cooperate with the abutting portion.

[0016] According to some embodiments of the present invention, the output component includes a first motor, a lead screw and a moving member. The first motor is connected to the first bracket. The output end of the first motor is connected to the lead screw. The lead screw is threadedly connected to the moving member. The lead screw is configured to be able to rotate and drive the moving member to move, so that the moving member abuts against the bearing assembly.

[0017] According to some embodiments of the present utility model, the output shaft includes a first shaft segment, a second shaft segment, and a first coupling. One end of the first shaft segment is used to connect to the speed reducer, the other end of the first shaft segment is connected to the first coupling, and both ends of the second shaft segment are respectively connected to the first coupling and the bearing seat.

[0018] According to some embodiments of the present utility model, the platform device includes a main platform and a moving platform. A first guide rail is provided on the upper end surface of the main platform, the moving platform is slidably connected to the first guide rail, and the mounting frame is fixedly connected to the moving platform.

[0019] According to some embodiments of the present utility model, the platform device includes a moving platform. The moving platform is provided with a second guide rail, the driving device is slidably connected to the second guide rail, and the driving device is configured to be able to move in a direction away from or close to the mounting frame.

[0020] According to some embodiments of the present utility model, the driving device includes a third motor, a second bracket, a mounting seat, and a third guide rail. The mounting seat is slidably connected to the second guide rail, the third guide rail is provided on the mounting seat, the extending direction of the third guide rail is perpendicular to the extending direction of the second guide rail, the second bracket is slidably connected to the third guide rail, and the third motor is fixedly connected to the second bracket.

[0021] According to some embodiments of the present utility model, the platform device includes a support platform. The torque loading device includes a torque sensor, a second motor, and a transmission shaft. The second motor is drivingly connected to the transmission shaft, the transmission shaft is connected to the output shaft, and the torque sensor is installed on the transmission shaft and connected to the support platform.

[0022] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0023] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0024] Figure 1 is a schematic structural diagram of a test device according to an embodiment of the present utility model;

[0025] Figure 2 is a schematic structural diagram of a bending moment loading device according to an embodiment of the present utility model;

[0026] Figure 3 is a schematic structural diagram of a torque loading device according to an embodiment of the present utility model;

[0027] Figure 4It is a schematic structural diagram of the output shaft of an embodiment of the present utility model;

[0028] Figure 5 It is a simplified schematic top view of the mounting base and the moving platform of an embodiment of the present utility model.

[0029] Reference numerals:

[0030] Testing device 1000;

[0031] Platform device 100; Main platform 110; First guide rail 111; Moving platform 120; Second guide rail 121; Support platform 130;

[0032] Mounting frame 200; Reducer 210;

[0033] Driving device 300; Third motor 310; Second bracket 320; Mounting base 330; Third guide rail 331;

[0034] Output shaft 400; Bearing seat 410; First shaft section 420; Second shaft section 430; First coupling 440;

[0035] Torque loading device 500; Torque sensor 510; Second motor 520; Transmission shaft 530; Second coupling 531; Third coupling 532; Third shaft section 533;

[0036] Bending moment loading device 600; First bracket 610; Guide post 611; Spring 612; Output assembly 620; Moving part 621; First motor 622; Lead screw 623; Bearing assembly 630; Outer ring 631; Contact portion 632; Bending moment sensor 640. Detailed implementation manners

[0037] The embodiments of the present utility model are described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship involved in the orientation description, such as up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the 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.

[0039] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0040] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0041] Refer to Figure 1 and Figure 2 As shown in [relevant figures], a test device 1000 according to an embodiment of the present utility model is used to simulate the working conditions that a speed reducer 210 such as a harmonic speed reducer 210 and an RV speed reducer 210 may encounter during operation. The test device 1000 according to an embodiment of the present utility model includes: a platform device 100, a mounting frame 200, a driving device 300, a bearing seat 410, an output shaft 400, a torque loading device 500, and a bending moment loading device 600. The platform device 100 mainly plays a supporting role. The mounting frame 200 is connected to the platform device 100 and is used to mount the speed reducer 210. The driving device 300 is connected to the platform device 100 and is drivingly connected to the input end of the speed reducer 210 to simulate the working state of the speed reducer 210 during operation. The bearing seat 410 is also connected to the platform device 100 and is spaced from the mounting frame 200. The output shaft 400 is rotatably connected to the bearing seat 410 and one end is connected to the output end of the speed reducer 210. Therefore, the speed reducer 210 can drive the output shaft 400 to rotate during operation. Since the length of the output shaft 400 is relatively long, it is necessary to provide the bearing seat 410 to support the output shaft 400 and reduce adverse conditions such as vibration and yaw of the output shaft 400 during operation.

[0042] It should be noted that the input end of the speed reducer 210 refers to the end that receives the power input from the driving device 300, and the output end of the speed reducer 210 refers to the end that outputs the decelerated power. For example, when the speed reducer 210 is a harmonic speed reducer, the harmonic speed reducer includes a rigid gear, a flexible gear, and a wave generator. The outer tooth part of the flexible gear meshes with the inner tooth part of the rigid gear, and the wave generator is embedded in the inner hole of the flexible gear. Therefore, the input end of the harmonic speed reducer is the cam of the wave generator, and the output end of the harmonic speed reducer is the rigid gear or the flexible gear. When the flexible gear is used as the output end, the rigid gear is fixedly connected to the mounting frame 200. When the rigid gear is used as the output end, the flange part of the flexible gear is fixedly connected to the mounting frame 200.

[0043] Refer to Figure 2 andFigure 3 As shown, the torque loading device 500 is connected to the output shaft 400 to apply torque to the output shaft 400, and the output shaft 400 then transmits the torque to the speed reducer 210. The bending moment loading device 600 is used to apply a bending moment to the output shaft 400 in a rotating state. The bending moment loading device 600 includes a first bracket 610, an output assembly 620, and a bearing assembly 630. The first bracket 610 is installed on the platform device 100. The bearing assembly 630 is sleeved on the output shaft 400. The output assembly 620 is connected to the first bracket 610, and the output assembly 620 acts on the bearing assembly 630 to apply a force to the bearing assembly 630. The force can be in a direction perpendicular to the rotation axis of the output shaft 400, or can be set at an angle to the rotation axis direction of the output shaft 400. The bearing assembly 630 then transmits the force to the output shaft 400, and the bending moment generated by the force is transmitted to the speed reducer 210 through the output shaft 400.

[0044] It can be understood that by adopting the above solution, the torque loading device 500 is connected to the output shaft 400, so that the torque is transmitted to the speed reducer 210 through the output shaft 400. By changing the magnitude of the output force, the working conditions of the speed reducer 210 under different torques during operation can be simulated. The output assembly 620 of the bending moment loading device 600 is connected to the first bracket 610. The bearing assembly 630 is sleeved on the output shaft 400, and the output assembly 620 can apply a force in a direction perpendicular to the rotation axis of the output shaft 400 to the bearing assembly 630. Therefore, the bending moment generated by the force can be transmitted to the speed reducer 210 through the output shaft 400. By changing the magnitude of the output force, the working conditions of the speed reducer 210 under different bending moments during operation can be simulated. Therefore, the test device 1000 of this embodiment can simultaneously simulate the operating conditions of the speed reducer 210 under different bending moments and different torques, which is convenient for testers to more accurately evaluate the performance of the speed reducer 210, such as evaluating the impact on aspects such as the life, smoothness, reliability, and wear condition of the speed reducer 210.

[0045] Refer to Figure 2As shown, in the embodiment of the present utility model, the bearing assembly 630 includes an outer ring 631, an inner ring, and a plurality of rolling elements (the inner ring and the rolling elements are not shown in the figure). Both the outer ring 631 and the inner ring are annular. The outer ring 631 is sleeved on the inner ring and is spaced from the inner ring. A track is provided between the inner ring and the outer ring 631. The plurality of rolling elements are arranged on the track between the inner ring and the outer ring 631, and the positions of the rolling elements are restricted by a cage. Therefore, the outer ring 631 and the inner ring can rotate relative to each other. The inner ring is sleeved on the output shaft 400, and the inner ring can be slidably connected to the output shaft 400. When testing is required, the inner ring can be fixedly connected to the output shaft 400 through a fastener, so that the inner ring and the output shaft 400 rotate synchronously. An abutting portion 632 is provided on the outer side wall of the outer ring 631, and the abutting portion 632 is used for abutting and cooperating with the output assembly 620. Among them, the output assembly 620 can be a cylinder, an oil cylinder, an electric cylinder, etc. By applying a force perpendicular to the axis of rotation of the rotating shaft to the abutting portion 632, a bending moment is loaded on the output shaft 400.

[0046] Since the output shaft 400 needs to rotate during operation, in order to avoid wear caused by relative rotation between the bearing assembly 630 and the output assembly 620, and at the same time avoid affecting the rotation of the output shaft 400 when applying a bending moment. By adopting the scheme of relative rotation between the outer ring 631 and the inner ring, it basically does not affect the rotation of the output shaft 400, and can stably output torque on the output shaft 400, so as to more accurately simulate the working conditions of the reducer 210 during actual operation. At the same time, it can avoid wear of the output assembly 620, with reasonable structural design and high reliability.

[0047] It should be noted that in another embodiment, the bearing assembly 630 can still be a bushing. The bushing is sleeved on the output shaft 400, and lubricating oil is provided between the bushing and the output shaft 400 to reduce friction and wear. For the convenience of explanation, in the following embodiments, the bearing assembly 630 including an outer ring 631, an inner ring, and rolling elements is taken as an example for explanation.

[0048] Refer to Figure 1 As shown, in the embodiment of the present utility model, the platform device 100 includes a main platform 110. A first guide rail 111 is provided on the upper end surface of the main platform 110. The extending direction of the first guide rail 111 is the same as the length direction of the output shaft 400. For example, the extending direction of the first guide rail 111 and the length direction of the output shaft 400 are both Figure 1The left - right direction shown in [figure]. The outer ring 631 is connected to the first bracket 610. The first bracket 610 is slidably connected to the first guide rail 111 and can drive the bearing assembly 630 to move along the length direction of the output shaft 400. It can be understood that by driving the bearing assembly 630 to move through the first bracket 610, the position where the bending moment is applied can be changed, and the operating conditions of the output shaft 400 and the speed reducer 210 when subjected to bending moments at different positions can be more accurately simulated. Thus, it helps the testers obtain more accurate data, evaluate the influence of bending moments at different positions on the service life of the speed reducer 210, and improve the reliability and accuracy of the test. When the first bracket 610 moves to a suitable position, the position of the first bracket 610 can be fixed through structures such as fasteners and buckles to prevent the first bracket 610 from shaking significantly during the test.

[0049] Refer to Figure 2 As shown in the embodiments of the present utility model, the first bracket 610 is provided with a guide post 611, and an elastic member is provided at the guide post 611. The elastic member can be a spring 612, a rubber member, a silicone member, etc. Taking the spring 612 as an example. The lower end of the outer ring 631 is provided with a guide hole, the guide post 611 is inserted into the guide hole, and the spring 612 can abut against the end wall of the guide hole. Since the bearing assembly 630 will displace downward when subjected to a bending moment, the cooperation of the guide post 611 and the guide hole is beneficial to guiding the bearing assembly 630 to move in the radial direction, reducing adverse situations such as yaw and misalignment of the position of the bearing assembly 630. By setting the spring 612 to abut against the end wall of the guide hole, an upward elasticity is applied to the bearing assembly 630, thereby reducing the interference of the self - weight of the bearing assembly 630 on the test and improving the accuracy of the test.

[0050] Refer to Figure 2As shown, in the embodiment of the present utility model, the bending moment loading device 600 further includes a bending moment sensor 640. The bending moment sensor 640 is connected to the output end of the output assembly 620 and can be in abutting cooperation with the abutting portion 632. Among them, the bending moment sensor 640 is used to obtain the bending moment magnitude signal received by the output shaft 400 and transmit it to the control device for analysis and processing, so as to better reflect the test situation and facilitate the tester to collect and organize information. The bending moment sensor 640 can be a strain gauge sensor, a fiber Bragg grating sensor, a piezoelectric bending moment sensor, etc. The strain gauge sensor detects the strain change caused by the bending moment by pasting strain gauges on the elastic element, and then calculates the magnitude of the bending moment. The strain gauge sensor has the characteristics of simple structure and high measurement accuracy, and is widely used in the mechanical tests of various structures. The fiber Bragg grating sensor measures the sensitivity of the grating structure in the optical fiber to strain and temperature, and has the advantages of multi-parameter measurement, high temperature resistance, corrosion resistance, electromagnetic interference resistance, etc., and is particularly suitable for test occasions with complex environments and high-precision requirements. The piezoelectric bending moment sensor uses piezoelectric materials. The piezoelectric materials generate charges when subjected to pressure or tensile force. Therefore, the piezoelectric bending moment sensor can use this principle to detect the bending moment.

[0051] Continue to refer to Figure 2 As shown, in the embodiment of the present utility model, the output assembly 620 includes a first motor 622, a lead screw 623 and a moving member 621. The first motor 622 is fixedly connected to the first bracket 610, for example, connected to the upper end of the first bracket 610. The output end of the first motor 622 is drivingly connected to the lead screw 623. Therefore, the first motor 622 can drive the lead screw 623 to rotate. The lead screw 623 is threadedly connected to the moving member 621. When the lead screw 623 rotates, the lead screw 623 can drive the moving member 621 to move, for example, drive the moving member 621 to move in the up and down direction so that the moving member 621 abuts against the bearing assembly 630, so as to apply a bending moment to the output shaft 400 through the bearing assembly 630. It can be understood that using the first motor 622 to drive the lead screw 623 to rotate and converting the rotational motion into a linear motion through the lead screw 623 has a simple structure, is easy to install, and has high reliability. At the same time, adopting the scheme of driving by the first motor 622 has a high driving accuracy and can more accurately adjust the magnitude of the bending moment applied to the bearing assembly 630 to improve the accuracy and reliability of the test. It should be noted that as an alternative embodiment, the output assembly 620 can also use structures such as cylinders and oil cylinders to apply the bending moment, and a suitable scheme is selected according to the actual situation.

[0052] Refer to Figure 4As shown, in the embodiment of the present utility model, the output shaft 400 includes a first shaft section 420, a second shaft section 430, and a first coupling 440. One end of the first shaft section 420 is connected to the speed reducer 210, and the other end of the first shaft section 420 is connected to the first coupling 440. One end of the second shaft section 430 is connected to the first coupling 440, and the other end is rotatably connected to the bearing seat 410. It can be understood that since the models and types of the tested speed reducers 210 may be different, the first shaft sections 420 used may also be different. Designing the output shaft 400 in the form of the first shaft section 420 and the second shaft section 430 facilitates the replacement of different first shaft sections 420 to adapt to the corresponding speed reducers 210, and at the same time facilitates the installation of the bearing assembly 630 onto the first shaft section 420. The structural design is reasonable and reliable. The second shaft section 430 usually does not need to be disassembled, so there is no need to frequently disassemble and assemble it with the bearing seat 410, which can simplify the installation process and improve the testing efficiency.

[0053] Since the mounting frame 200 needs to frequently disassemble and assemble the speed reducer 210 to detect the testing state of the speed reducer 210, and also needs to frequently replace different speed reducers 210 for testing, it is necessary to ensure the convenience of disassembling and assembling the speed reducer 210. For this purpose, referring to Figure 1 As shown, in the embodiment of the present utility model, the platform device 100 further includes a moving platform 120. The moving platform 120 is slidably connected to the first guide rail 111 on the first platform, and the mounting frame 200 is fixedly connected to the moving platform 120. It can be understood that by designing the mounting frame 200 to be installed on the moving platform 120, when it is necessary to disassemble and assemble the speed reducer 210, by driving the moving platform 120 to move away from the output shaft 400, the mounting frame 200 is moved away from the output shaft 400, so that the output shaft 400 can be conveniently disassembled. After the speed reducer 210 is installed, drive the moving platform 120 to move in the direction close to the output shaft 400. After the output shaft 400 and the speed reducer 210 are connected, then fix the position of the moving platform 120. Therefore, it can be avoided that the output shaft 400 affects the disassembly and assembly of the speed reducer 210, and the disassembly and assembly of the speed reducer 210 are relatively convenient.

[0054] Since the rotation centers of some speed reducers 210 are eccentric structures, in order to improve the versatility of the testing device 1000, referring to Figure 1 and Figure 5As shown, in the embodiment of the present utility model, the driving device 300 includes a third motor 310, a second bracket 320, a mounting seat 330, and a third guide rail 331. The mounting seat 330 is slidably connected to the second guide rail 121. The upper end surface of the mounting seat 330 is provided with a third guide rail 331, and the extending direction of the third guide rail 331 is perpendicular to the extending direction of the second guide rail 121. For example, the extending direction of the third guide rail 331 is the front-back direction. The second bracket 320 is slidably connected to the third guide rail 331, and the third motor 310 is fixedly connected to the second bracket 320. It can be understood that by setting the extending direction of the third guide rail 331 perpendicular to the extending direction of the second guide rail 121, when the speed reducer 210 is an eccentric structure, the second bracket 320 can be driven to move along the third guide rail 331, thereby adjusting the position of the third motor 310 to adapt to the structure of the speed reducer 210, and the versatility of the testing device 1000 can be improved.

[0055] Referring to Figure 3 As shown, in the embodiment of the present utility model, the platform device 100 further includes a support platform 130, and the support platform 130 is fixedly connected to the upper end surface of the main platform 110. The torque loading device 500 includes a torque sensor 510, a second motor 520, and a transmission shaft 530. The second motor 520 is drivingly connected to the transmission shaft 530, the transmission shaft 530 is connected to the output shaft 400, and the torque sensor 510 is installed on the transmission shaft 530 and connected to the support platform 130. Among them, the bearing seat 410 can also be connected to the support platform 130. The torque sensor 510 is a device capable of measuring and transmitting torque information. It is usually composed of a torque sensitive element and a signal processing circuit, and can detect the torque applied by the torque loading device 500 to the transmission shaft 530. Since the testing device 1000 is also provided with a bending moment loading device 600, and the torque sensor 510 is easily damaged when subjected to a bending moment, the torque sensor 510 is connected to the support platform 130 to support the torque sensor 510 and the bearing seat 410, thereby effectively reducing the influence of the bending moment on the torque sensor 510, improving the stability and reliability of the torque sensor 510 during operation, and at the same time being able to support the bearing seat 410 and improving the stability of the output shaft 400 during operation.

[0056] Among them, the torque sensor 510 can be a resistive torque sensor, an inductive torque sensor, a strain gauge torque sensor, etc. The resistive torque sensor uses the principle of resistance strain to measure torque and is composed of a resistance strain gauge, an elastic element, and a measuring circuit. It has a simple structure, low cost, and high measurement accuracy, and is suitable for most static and dynamic torque measurement occasions. The inductive torque sensor uses the principle of electromagnetic induction to measure torque and is composed of an induction coil, an iron core, and a measuring circuit. It has a wide measurement range, high accuracy, and good reliability, and is suitable for high-precision and high-stability measurement occasions. The strain gauge torque sensor uses the principle of strain to measure torque and is composed of a strain gauge, an elastic element, and a measuring circuit.

[0057] Referring to Figure 3 As shown, in the embodiment of the present invention, the transmission shaft 530 includes a second coupling 531, a third coupling 532, and a third shaft section 533. One end of the third shaft section 533 is connected to the second motor 520 through the second coupling 531, and the other end of the third shaft section 533 is connected to one end of the output shaft 400 through the third coupling 532. The torque sensor 510 is located between the second coupling 531 and the third coupling 532 and is connected to the third shaft section 533. With the above solution, it is convenient for the second motor 520 to transmit torque to the output shaft 400 through the transmission shaft 530, and then the output shaft 400 transmits the torque to the speed reducer 210, so as to simulate the operating conditions of the speed reducer 210 under different torques and improve the accuracy of the test.

[0058] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. Test equipment, used for testing reducer, characterized in that: include: Platform device; A mounting frame for mounting the reducer, connected to the platform device; A driving device connected to the platform device, wherein the driving device is drivingly connected to an input end of the reducer; A bearing seat connected to the platform device and spaced apart from the mounting frame; An output shaft, rotatably connected to the bearing seat and having one end connected to an output end of the reducer; A torque loading device connected to the output shaft, the torque loading device is used to apply torque to the output shaft; The bending moment loading device includes a first bracket, an output component and a bearing assembly, wherein the first bracket is mounted on the platform device, the bearing assembly is sleeved on the output shaft, the output component is connected to the first bracket, and the output component can act on the bearing assembly to apply a bending moment to the output shaft in a rotating state.

2. The test device according to claim 1, characterized in that: The bearing assembly includes an inner ring, an outer ring and a plurality of rolling elements, wherein the outer ring is sleeved on the inner ring, the plurality of rolling elements are arranged between the outer ring and the inner ring, the inner ring is sleeved on the output shaft, and an abutment portion is provided on the outer side wall of the outer ring, and the abutment portion is used to abut and cooperate with the output assembly.

3. The testing device according to claim 2, characterized in that: The platform device includes a main platform, and the upper end surface of the main platform is provided with a first guide rail, the extension direction of the first guide rail is the same as the length direction of the output shaft, the outer ring is connected to the first bracket, the first bracket and the first guide rail are slidably connected and can drive the bearing assembly to move along the length direction of the output shaft.

4. The testing device according to claim 2, characterized in that: The bending moment loading device also includes a bending moment sensor, which is connected to the output end of the output component and can be abutted and matched with the abutment portion.

5. The testing device according to claim 1, characterized in that: The output component includes a first motor, a screw and a moving part, the first motor is connected to the first bracket, the output end of the first motor is connected to the screw, the screw and the moving part are threadedly connected, and the screw is configured to be able to rotate and drive the moving part to move so that the moving part and the bearing assembly abut.

6. The testing device according to claim 1, characterized in that: The output shaft includes a first shaft section, a second shaft section and a first coupling, one end of the first shaft section is used to connect to the reducer, the other end of the first shaft section is connected to the first coupling, and the two ends of the second shaft section are respectively connected to the first coupling and the bearing seat.

7. The testing device according to claim 1, characterized in that: The platform device comprises a main platform and a mobile platform. The upper end surface of the main platform is provided with a first guide rail. The mobile platform is slidably connected to the first guide rail. The mounting frame is fixedly connected to the mobile platform.

8. The testing device according to claim 1 or 7, characterized in that: The platform device comprises a mobile platform, the mobile platform is provided with a second guide rail, the driving device is slidably connected to the second guide rail, and the driving device is configured to be able to move in a direction away from or close to the mounting frame.

9. The testing device according to claim 8, characterized in that: The driving device includes a third motor, a second bracket, a mounting seat and a third guide rail. The mounting seat is slidably connected to the second guide rail. The third guide rail is provided on the mounting seat. The extension direction of the third guide rail is perpendicular to the extension direction of the second guide rail. The second bracket is slidably connected to the third guide rail. The third motor is fixedly connected to the second bracket.

10. The testing device according to claim 1, characterized in that: The platform device includes a supporting platform, and the torque loading device includes a torque sensor, a second motor and a transmission shaft, the second motor is drivingly connected to the transmission shaft, the transmission shaft is connected to the output shaft, and the torque sensor is installed on the transmission shaft and connected to the supporting platform.

Images