Durable bending moment testing system for speed reducer

Abstract

The utility model relates to the technical field of synchronous speed reducer testing tools, in particular to a speed reducer durability bending moment testing system, which comprises a base, an input device arranged on the base and used for providing driving force for a tested speed reducer, and a bending moment loading unit matched with the tested speed reducer, the outer side of the bending moment loading unit is sequentially matched with a torque detection unit, an accompanying test unit and a load unit; the bending moment loading unit comprises a force arm shaft which is coaxial with the tested speed reducer, and a loading assembly which applies bending moment to the force arm shaft. The loading assembly comprises a bearing part matched with the force arm shaft, an inner ring of the bearing part and the force arm shaft rotate coaxially, and an outer ring of the bearing part is matched with the force application structure. By optimizing the bending moment loading unit, constant bending moment can be applied to the moment arm shaft, and the operation torque value of the tested speed reducer can be tested under a certain working condition, so that the operation parameters of the tested speed reducer can be measured more accurately, and the accuracy and reliability of a detection result are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronous reducer testing tooling, in particular to a reducer durability bending moment testing system, which is particularly suitable for performing constant load bending moment durability tests on tested parts of different models. Background Art

[0002] Currently, all reducers must undergo testing before leaving the factory, and can only be shipped after meeting qualified standards. This includes many conventional inspection items, such as reducer load testing and transmission performance testing. However, there is no unified testing protocol for reducer endurance bending moment testing. Traditional protocols cannot apply a constant bending moment to the reducer and perform on-machine testing, thus failing to determine the actual operating conditions and lifespan of the reducer under these operating conditions.

[0003] It can be seen that the current test scheme for the durability bending moment of reducers still needs to be improved. It should be optimized to achieve the application of a constant load and to be able to test the durability through on-machine testing. This test can be used to evaluate the stability and reliability of the reducer's operation. Therefore, it is necessary to propose a more reasonable technical solution to solve the technical problems existing in the existing technology. Utility Model Content

[0004] In order to overcome at least one of the defects mentioned above, the present invention proposes a reducer durability bending moment test system. By applying a constant bending moment to the rotating shaft of the reducer test, the durability of the reducer can be measured more accurately, and more accurate test results can be achieved compared with traditional technologies.

[0005] In order to achieve the above objectives, the test system disclosed in the present utility model can adopt the following technical solutions:

[0006] A reducer durability bending moment test system includes a base, on which is provided an input device for providing driving force to the reducer under test, and a bending moment loading unit cooperating with the reducer under test, wherein the outer side of the bending moment loading unit is sequentially equipped with a torque detection unit, a test unit and a load unit; the bending moment loading unit includes a lever arm shaft coaxially arranged with the reducer under test, and a loading assembly for applying bending moment to the lever arm shaft; the loading assembly includes a bearing member cooperating with the lever arm shaft, the inner ring of the bearing member rotates coaxially with the lever arm shaft, and the outer ring of the bearing member cooperates with a force-applying structure.

[0007] The aforementioned bending moment testing system applies a constant bending moment to the lever arm shaft via a moment loading unit, thereby testing the reducer's operating state under these conditions and measuring parameters such as actual torque. Because the bearing assembly is coaxially aligned with the lever arm shaft, external bending moment can be applied to the lever arm shaft without affecting its rotational stability.

[0008] Furthermore, the force-applying structure can adopt a variety of structures, as long as it can apply a constant bending moment to the bearing component. This structure is not limited to a single one. Here, we optimize and propose one feasible option: the force-applying structure includes a force-applying rod that cooperates with the loading driver to apply force to the bearing component. When using this solution, the force-applying rod can apply force downward from above the bearing component, and the force is applied in the direction of the line that contains the diameter of the bearing component.

[0009] Furthermore, to better apply a constant load, a transfer structure is used to transmit the force of the force-applying rod to the bearing. Here, an optimization and feasible option is proposed: the force-applying structure also includes a force-transmitting pin, which is disposed between the force-applying rod and the bearing and abutted against the outer ring of the bearing by the force-applying rod. In this solution, the force-transmitting pin is disposed within and slides along a sleeve, and the force-applying rod applies force to the force-transmitting pin, causing it to abut against the surface of the bearing.

[0010] Furthermore, when configuring the loading assembly, fixed engagement can be achieved through a variety of methods, not limited to a single one. Here, we provide an optimization and propose one feasible option: a load bracket is provided on the base, the loading driver is provided on the load bracket, and the force application rod is movably provided on the load bracket and perpendicular to the outer ring of the bearing. When adopting this solution, the load bracket can be a portal frame.

[0011] Furthermore, in order to more flexibly connect the moment loading unit and the reducer under test, the load bracket can be set as a mobile structure. Here, an optimization is made and one of the feasible options is proposed: the load bracket cooperates with the second sliding component on the base and slides relative to the base. When adopting the above solution, the sliding of the load bracket on the base can flexibly adjust the position of the moment loading unit and cooperate with the reducer under test. The second sliding component can adopt a slide rail structure, in which the slide rail is set on the base, and the load bracket is matched to the slide rail through a slider. A control structure is also provided between the slider and the slide rail, and the position of the slider on the slide rail can be adjusted and locked by the control structure.

[0012] Furthermore, after the reducer under test is set on the base, it cooperates with the input device at the front end and is driven, and at the same time cooperates with the bending moment loading unit at the rear end to achieve operation under certain working conditions. The setting method of the reducer under test is not limited to a single method. Here, an optimization is made and one of the feasible options is proposed: a mounting bracket for mounting the reducer under test is provided on the base. The mounting bracket is L-shaped and includes a horizontal fixing portion and a vertical connecting portion. The connecting portion is used to cooperate with the reducer to be tested, and the fixing portion is fixedly connected to the base. When adopting the above solution, the mounting bracket is fixedly matched with the base and connects and fixes the reducer under test. The input device and bending moment loading unit are respectively provided at the front and rear ends of the reducer under test.

[0013] Furthermore, the input device is used to provide power for detection, and its configuration is not limited to a single method. Here, an optimization is made and one feasible option is proposed: the input device includes a drive motor, which is mounted on a first sliding assembly via a drive motor frame and slides back and forth on the base via the first sliding assembly. When adopting this solution, the first sliding assembly can adopt a slide rail structure. The slide rail is mounted on the base, and the drive motor frame is coupled to the slide rail via a slider. A control structure is also provided between the slider and the slide rail, and the control structure can adjust the position of the slider on the slide rail and lock it.

[0014] Furthermore, a torque detection unit is used to detect the torque on the lever arm shaft, thereby calculating the torque value of the reducer under test. The torque detection unit can adopt a variety of schemes, which are not limited to a single one. Here, we optimize and propose one feasible option: the torque detection unit includes a torque sensor, one side of which is coaxially coupled to the lever arm shaft via a coupling, and the other side is coaxially coupled to the test unit. When using this scheme, the torque value can be obtained by real-time monitoring through the torque sensor.

[0015] Furthermore, the accompanying test unit is a reducer or transmission with clear parameters. Synchronous testing with the reducer under test under the same operating conditions allows for comparison and determination of the operating status of the reducer under test. A variety of solutions are available for setting up and implementing synchronous testing. Here, we propose a feasible option for optimization: the accompanying test unit includes a test transmission, the input side of which is coupled with a torque sensor, and the output side of which is coupled with a load cell. When this solution is used, the test transmission and the reducer under test operate coaxially and at the same speed.

[0016] Furthermore: the load unit includes a load motor.

[0017] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in this utility model include:

[0018] In the utility model, by optimizing the bending moment loading unit, a constant bending moment can be applied to the lever arm shaft, so as to test the operating torque value of the reducer under certain working conditions, thereby being able to more accurately measure the operating parameters of the reducer, and improving the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the overall structure of the test system.

[0021] Figure 2 A schematic diagram of the overall structure of the test system from another perspective.

[0022] Figure 3 for Figure 1 A magnified schematic diagram of the local structure of the moment loading unit at point A.

[0023] Figure 4 for Figure 2 An enlarged schematic diagram of the local structure of the second sliding component at point B in the middle.

[0024] In the above drawings, the meanings of the symbols are as follows:

[0025] 1. Base; 2. Input device; 3. Mounting bracket; 301. Connecting part; 302. Fixing part; 4. Bending moment loading unit; 401. Load bracket; 402. Loading driver; 403. Force transmission pin; 404. Sleeve; 405. Bearing; 5. Torque detection unit; 6. Load unit; 7. Test unit; 8. Lever shaft; 9. First sliding assembly; 10. Second sliding assembly; 1001. Slide rail; 1002. Slider; 1003. Control structure. DETAILED DESCRIPTION

[0026] This embodiment will be further explained below with reference to the accompanying drawings and specific examples.

[0027] In view of the shortcomings of the existing reducer bending moment testing scheme, the following embodiments are optimized and overcome the defects in the prior art.

[0028] Example

[0029] like Figures 1 to 4 As shown, this embodiment provides a reducer durability bending moment test system, including a base 1, on which is provided an input device 2 for providing driving force to the reducer under test, and a bending moment loading unit 4 cooperating with the reducer under test, and the outer side of the bending moment loading unit 4 is sequentially equipped with a torque detection unit 5, a test unit 7 and a load unit 6; the bending moment loading unit 4 includes a lever shaft 8 coaxially arranged with the reducer under test, and a loading component for applying a bending moment to the lever shaft 8; the loading component includes a bearing member 405 cooperating with the lever shaft 8, the inner ring of the bearing member 405 rotates coaxially with the lever shaft 8, and the outer ring of the bearing member 405 cooperates with the force-applying structure.

[0030] The aforementioned bending moment testing system applies a constant bending moment to the lever shaft 8 via the bending moment loading unit 4, thereby testing the reducer's operating state under such conditions and measuring parameters such as its actual torque. Because the bearing 405 is coaxially coupled to the lever shaft 8, an external bending moment can be applied to the lever shaft 8 without affecting its rotational stability.

[0031] The force-applying structure can adopt a variety of structures, as long as it can apply a constant bending moment to the bearing member 405. The structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the force-applying structure includes a force-applying rod, which cooperates with the loading driver 402 and is used to apply force to the bearing member 405. When adopting this solution, the force-applying rod can apply force downward from above the bearing member 405, and the force is applied in the direction of the straight line along the diameter of the bearing member 405.

[0032] To better apply a constant load, a transmission structure is used to transmit the force of the force-applying rod to the bearing 405. This embodiment optimizes and adopts one feasible option: the force-applying structure also includes a force-transmitting pin 403, which is disposed between the force-applying rod and the bearing 405 and abutted against the outer ring of the bearing 405 by the force-applying rod. When this solution is adopted, the force-transmitting pin 403 is disposed within and slides along the sleeve 404. The force-applying rod applies force to the force-transmitting pin 403, causing it to abut against the surface of the bearing 405.

[0033] When configuring the loading assembly, fixed engagement can be achieved through various methods, which are not limited to a single method. This embodiment optimizes and adopts one feasible option: a load bracket 401 is provided on the base 1, the loading driver 402 is provided on the load bracket 401, and the force application rod is movably provided on the load bracket 401 and perpendicular to the outer ring of the bearing member 405. When adopting this solution, the load bracket 401 can be a portal frame.

[0034] In order to more flexibly connect the moment loading unit 4 and the reducer under test, the load bracket 401 can be set as a mobile structure. This embodiment is optimized and adopts one of the feasible options: the load bracket 401 cooperates with the second sliding component 10 on the base 1 and slides relative to the base 1. When the above solution is adopted, the load bracket 401 slides on the base 1 to flexibly adjust the position of the moment loading unit 4 and cooperate with the reducer under test. The second sliding component 10 can adopt a slide rail structure, the slide rail 1001 is set on the base 1, and the load bracket 401 is matched to the slide rail 1001 through the slider 1002. A control structure 1003 is also provided between the slider 1002 and the slide rail 1001. The position of the slider 1002 on the slide rail 1001 can be adjusted and locked by the control structure 1003.

[0035] After the reducer under test is set on the base 1, it cooperates with the input device 2 at the front end and is driven, and cooperates with the bending moment loading unit 4 at the rear end to achieve operation under certain working conditions. The setting method of the reducer under test is not limited to a single method. This embodiment optimizes and adopts one of the feasible options: a mounting bracket 3 for mounting the reducer under test is provided on the base 1. The mounting bracket 3 is L-shaped and includes a horizontal fixing portion 302 and a vertical connecting portion 301. The connecting portion 301 is used to cooperate with the reducer to be tested, and the fixing portion 302 is fixedly connected to the base 1. When adopting the above solution, the mounting bracket 3 is fixedly matched with the base 1 and connects and fixes the reducer under test. The input device 2 and the bending moment loading unit 4 are respectively provided at the front and rear ends of the reducer under test.

[0036] The input device 2 is used to provide power for detection, and its setting method is not limited to a single one. This embodiment is optimized and adopts one of the feasible options: the input device 2 includes a drive motor, which is set on the first sliding component 9 through the drive motor frame, and slides back and forth on the base 1 through the first sliding component 9. When adopting the above solution, the first sliding component 9 can adopt a slide rail structure. The slide rail 1001 is set on the base 1, and the drive motor frame is matched to the slide rail 1001 through the slider 1002. A control structure 1003 is also provided between the slider 1002 and the slide rail 1001. The position of the slider 1002 on the slide rail 1001 can be adjusted and locked through the control structure 1003.

[0037] The torque detection unit 5 is used to detect the torque on the lever shaft 8, thereby calculating the torque value of the reducer under test. The torque detection unit 5 can adopt a variety of solutions, which are not limited to a single solution. This embodiment optimizes and adopts one feasible option: the torque detection unit 5 includes a torque sensor, one side of which is coaxially coupled to the lever shaft 8 via a coupling, and the other side is coaxially coupled to the test unit 7. When using this solution, the torque value can be obtained by real-time monitoring through the torque sensor.

[0038] The accompanying test unit 7 is a reducer or transmission with clear parameters. Under the same operating conditions, it can be tested synchronously with the reducer under test for comparison to determine the operating status of the reducer under test. Specifically, multiple schemes can be adopted to set up and implement synchronous testing. This embodiment optimizes and adopts one feasible option: the accompanying test unit 7 includes a accompanying test transmission, the input side of the accompanying test transmission is matched with the torque sensor, and the output side of the accompanying test transmission is matched with the load unit 6. When adopting this scheme, the accompanying test transmission and the reducer under test run coaxially and at the same speed.

[0039] Preferably, the load unit 6 described in this embodiment includes a load motor.

[0040] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various implementation methods based on the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the scope of protection of this embodiment. The scope of protection of this embodiment should be based on the definition in the claims.

Claims

1. A reducer endurance bending moment test system, characterized by: The invention comprises a base (1), an input device (2) for providing driving force to a reducer under test is provided on the base (1), and a bending moment loading unit (4) matched with the reducer under test, wherein a torque detection unit (5), a test unit (7) and a load unit (6) are matched with the outer side of the bending moment loading unit (4) in sequence; the bending moment loading unit (4) comprises a lever shaft (8) coaxially arranged with the reducer under test, and a loading assembly for applying a bending moment to the lever shaft (8); the loading assembly comprises a bearing member (405) matched with the lever shaft (8), an inner ring of the bearing member (405) rotates coaxially with the lever shaft (8), and an outer ring of the bearing member (405) is matched with a force-applying structure.

2. The reducer endurance bending moment testing system according to claim 1, characterized in that: The force-applying structure comprises a force-applying rod, which cooperates with the loading driver (402) and is used to apply force to the bearing member (405) to tighten it.

3. The reducer endurance bending moment testing system according to claim 2, characterized in that: The force-applying structure further comprises a force transmission pin (403), which is arranged between the force-applying rod and the bearing component (405) and is pressed against the outer ring of the bearing component (405) by the force-applying rod.

4. The reducer endurance bending moment testing system according to claim 2 or 3, characterized in that: The base (1) is provided with a load bracket (401), the loading driver (402) is provided on the load bracket (401), and the force application rod is movably provided on the load bracket (401) and is perpendicular to the outer ring of the bearing member (405).

5. The reducer endurance bending moment testing system according to claim 4, characterized in that: The load bracket (401) cooperates with the second sliding component (10) on the base (1) and slides relative to the base (1).

6. The reducer endurance bending moment testing system according to claim 1, characterized in that: A mounting bracket (3) for mounting a reducer to be tested is provided on the base (1); the mounting bracket (3) is L-shaped and comprises a horizontal fixing portion (302) and a vertical connecting portion (301); the connecting portion (301) is used to match the reducer to be tested; and the fixing portion (302) is fixedly connected to the base (1).

7. The reducer endurance bending moment testing system according to claim 1, characterized in that: The input device (2) includes a driving motor, which is arranged on a first sliding component (9) through a driving motor frame and slides back and forth on the base (1) through the first sliding component (9).

8. The reducer endurance bending moment testing system according to claim 1, characterized in that: The torque detection unit (5) includes a torque sensor, one side of which is coaxially matched with the force arm shaft (8) through a coupling, and the other side of which is coaxially matched with the accompanying test unit (7).

9. The reducer durability bending moment testing system according to claim 1 or 8, characterized in that: The accompanying test unit (7) includes an accompanying test gearbox, the input side of the accompanying test gearbox cooperates with the torque sensor, and the output side of the accompanying test gearbox cooperates with the load unit (6).

10. The reducer endurance bending moment testing system according to claim 9, characterized in that: The load unit (6) includes a load motor.

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