Test structure for output shaft of speed reducer

Abstract

The utility model relates to the technical field of test structures, in particular to a speed reducer output shaft test structure which comprises a mounting seat, a speed reducer body is arranged on the mounting seat, the conveying end of the speed reducer body is in transmission connection with a motor through a first sensor, and the output end of the speed reducer body is provided with an output shaft. The outer side of the output shaft is sleeved with a first gear through a shaft sleeve, one side of the first gear is in meshed transmission connection with a second gear, the second gear is coaxially connected with a connecting shaft rotationally connected with the mounting base, the two sides of the second gear are each provided with a deep groove ball bearing arranged on the connecting shaft in a sleeving mode, and the connecting shaft is rotationally connected with the mounting base through the deep groove ball bearings. The end part of the connecting shaft is sequentially in transmission connection with a second sensor and a loader, and the loader is used for applying a load to the output shaft of the speed reducer body to simulate the stress condition in actual work, so that the performance of the output shaft under different load conditions can be tested; according to the utility model, the service life test of the speed reducer in the actual use condition can be completely reflected.

Description

Technical Field

[0001] This utility model relates to the field of test structure technology, and in particular to a test structure for the output shaft of a speed reducer. Background Technology

[0002] In construction machinery, speed reducers used in actual applications require load testing before leaving the factory. During the load testing and verification phase of the speed reducer, the design of the test bench plays a crucial role.

[0003] For example, a patent with announcement number CN208333858U, entitled "A Test Device for a Speed ​​Reducer Test Platform," was published on January 4, 2019. It includes a test platform, a motor torque sensor, a motor speed sensor, and a load speed sensor. A controllable simulated load is provided above the test platform, a speed reducer torque sensor is located on one side of the controllable simulated load, a speed reducer is located on one side of the speed reducer torque sensor, and a motor is located on one side of the motor torque sensor. This utility model uses a speed reducer torque sensor and a motor torque sensor to measure torque. However, the applicant found that the test device has a limited function. When more comprehensive testing is required, multiple test benches need to be purchased to meet the measurement needs, resulting in high procurement costs. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to propose a test structure for the output shaft of a speed reducer to solve the problem of the single function of the test device.

[0005] To achieve the above objectives, this utility model provides a test structure for a speed reducer output shaft, including a mounting base. A speed reducer body is mounted on the mounting base. A motor is connected to the conveying end of the speed reducer body via a first sensor. An output shaft is provided at the output end of the speed reducer body. A first gear is sleeved on the outer side of the output shaft via a bushing. A second gear is meshed and connected to one side of the first gear. The second gear is coaxially connected to a connecting shaft that is rotatably connected to the mounting base. Deep groove ball bearings are mounted on both sides of the second gear and are sleeved on the connecting shaft. The connecting shaft is rotatably connected to the mounting base via the deep groove ball bearings. A second sensor and a loader are sequentially connected to the end of the connecting shaft.

[0006] Optionally, the conveying end of the reducer body is provided with an input shaft, and input couplings are provided on both sides of the first sensor. The two input couplings are respectively located between the input shaft and the first sensor and between the first sensor and the motor.

[0007] Optionally, output couplings are provided at both ends of the second sensor, and the two output couplings are respectively provided between the connecting shaft and the second sensor and between the second sensor and the loader.

[0008] Optionally, both the first sensor and the second sensor are torque sensors.

[0009] Optionally, a shaft washer is provided at the end of the output shaft away from the reducer body. The outer diameter of the shaft washer is not less than the outer diameter of the bushing. The shaft washer is fixed to the end of the output shaft by screws.

[0010] Optionally, the outer side of the bushing is provided with an assembly groove that mates with the first gear.

[0011] Optionally, the second gear is provided with a retaining ring at both ends where it connects to the connecting shaft, and the retaining ring is sleeved on the connecting shaft.

[0012] Optionally, the side of the deep groove ball bearing away from the connecting shaft is connected to the mounting base with a perforated elastic retaining ring, and the side of the deep groove ball bearing away from the second gear is connected to the connecting shaft with a bearing retaining ring, which is sleeved on the outside of the connecting shaft.

[0013] Optionally, the loader is a magnetic powder brake or a hydraulic brake.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a test structure for the output shaft of a speed reducer. This test structure provides power to the speed reducer body through a motor. A first sensor detects data such as the speed, torque, and power of the power input shaft of the speed reducer body. A second sensor detects data such as the speed, torque, and power of the output shaft of the speed reducer body. A loader is used to simulate different load conditions that the speed reducer body bears in actual operation, thereby testing the torque performance of the output shaft of the speed reducer body. By applying radial force to the output shaft of the speed reducer body through the loader, the magnitude of the radial force applied to the output shaft can be precisely controlled, simulating the radial load that the output shaft bears in actual operation, thus providing a more complete reflection of the life test of the speed reducer under actual use conditions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention.

[0018] In the diagram: 1. Mounting base; 2. First gear; 3. Bushing; 4. Shaft washer; 5. Screw; 6. Second gear; 7. Connecting shaft; 8. Shaft retaining ring; 9. Deep groove ball bearing; 10. Bearing retaining ring; 11. Hole retaining ring; 12. Motor; 13. First sensor; 14. Reducer body; 15. Input shaft; 16. Output shaft; 17. Second sensor; 18. Loader. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figures 1 to 2 As shown, a test structure for a speed reducer output shaft includes a mounting base 1, on which a speed reducer body 14 is mounted. The conveying end of the speed reducer body 14 is connected to a motor 12 via a first sensor 13. The output end of the speed reducer body 14 has an output shaft 16. A first gear 2 is sleeved on the outer side of the output shaft 16 via a bushing 3. A second gear 6 is meshed and driven on one side of the first gear 2. The second gear 6 is coaxially connected to a connecting shaft 7 rotatably connected to the mounting base 1. Deep groove ball bearings 9 are mounted on both sides of the second gear 6 and are sleeved on the connecting shaft 7. The connecting shaft 7 is rotatably connected to the mounting base 1 via the deep groove ball bearings 9. A second sensor 17 and a loader 18 are sequentially connected to the end of the connecting shaft 7. The loader 18 applies a load to the output shaft 16 of the speed reducer body 14 to simulate the stress conditions during actual operation, in order to test the performance of the output shaft 16 under different load conditions.

[0022] This experimental structure provides power to the reducer body 14 via motor 12. A first sensor 13 detects the speed, torque, and power of the input shaft 15 of the reducer body 14 and transmits this data to a controller connected to the first sensor 13. A second sensor 17 detects the speed, torque, and power of the output shaft 16 of the reducer body 14 and transmits this data to a controller connected to the second sensor 17. The controller analyzes and calculates the data, and a loader 18 simulates different load conditions experienced by the reducer body 14 during actual operation, thereby evaluating the performance of the reducer body 14. The torque performance of the output shaft 16 of the reducer body 14 is tested. A radial force is applied to the output shaft 16 of the reducer body 14 through the loader 18. The magnitude of the radial force applied to the output shaft 16 can be precisely controlled to simulate the radial load borne by the output shaft 16 in actual operation. For example, in the static loading test, the radial force is gradually increased and the deformation of the output shaft 16 is observed until the set limit load is reached or obvious plastic deformation occurs, thereby determining the load-bearing capacity of the output shaft 16. In the dynamic loading test, the alternating radial force in actual operation is simulated to study the fatigue performance of the output shaft 16 under long-term cyclic load.

[0023] This test structure adds a first gear 2 and a second gear 6, which is connected to the first gear 2, to the output end of the reducer torque test. The first gear 2 and the second gear 6 meet the gear module requirements for bearing the maximum radial force. In this way, the test structure can test the torque of the reducer body 14, and at the same time, it can also test the radial force that the reducer body 14 can withstand under the output torque loading. It can perform the output torque test of the reducer and the radial force test of the output shaft 16 of the reducer. The two tests can be completed on the same test mechanism. It has the functions of testing the torque and the radial force of the reducer, and can reflect the life test of the reducer under actual use conditions in a relatively complete way.

[0024] The mounting base 1 is used to fix the reducer body 14, the output shaft 16 and the connecting shaft 7 that is connected to the output shaft 16, to ensure the stability and safety of the equipment during the test and to maintain stability during the test.

[0025] The second sensor 17 measures the magnitude of the loading force in real time and feeds it back to the controller to achieve closed-loop control and ensure the accuracy and stability of the loading force.

[0026] The motor 12, mounting base 1, and loader 18 are all mounted on the base, which helps to improve the stability and safety of the equipment during the test.

[0027] The conveying end of the reducer body 14 is provided with an input shaft 15. Input couplings are provided on both sides of the first sensor 13. The two input couplings are respectively located between the input shaft 15 and the first sensor 13 and between the first sensor 13 and the motor 12. The input couplings connect the motor 12 and the input shaft 15 of the reducer body 14, which can simulate the actual connection between the motor 12 and the reducer body 14, and at the same time makes it easier to replace the motor 12. The motor 12 provides power to the reducer body 14. The first sensor 13 detects the speed, torque and power of the power input shaft 15 of the reducer body 14. The motor 12 and the input couplings provide power to the output shaft 16, so that the output shaft 16 rotates according to the set speed and torque.

[0028] The second sensor 17 is provided with output couplings at both ends, and the two output couplings are respectively provided between the connecting shaft 7 and the second sensor 17 and between the second sensor 17 and the loader 18.

[0029] Both the first sensor 13 and the second sensor 17 can be torque sensors, speed sensors, displacement sensors, etc., used to accurately measure parameters such as torque, speed, and axial displacement of the output shaft 16 in order to evaluate the performance and working status of the output shaft 16.

[0030] A shaft washer 4 is provided at the end of the output shaft 16 away from the reducer body 14. The outer diameter of the shaft washer 4 is not less than the outer diameter of the bushing 3. The shaft washer 4 is fixed to the end of the output shaft 16 by a screw 5. The screw 5 is an internal hexagonal head screw, which improves the stability of the first gear 2 assembled on the output shaft 16.

[0031] The bushing 3 has an assembly groove on its outer side that mates with the first gear 2.

[0032] Both ends of the second gear 6 connected to the connecting shaft 7 are provided with shaft retaining rings 8. The shaft retaining rings 8 are sleeved on the connecting shaft 7. The shaft retaining rings are designed to be used on the groove shaft on the connecting shaft 7 to restrict the axial movement of the second gear 6, prevent the second gear 6 from generating unnecessary axial movement, and ensure stable operation of the equipment.

[0033] The deep groove ball bearing 9 is connected to the mounting base 1 on the side away from the connecting shaft 7 with a perforated elastic retaining ring 11. The deep groove ball bearing 9 is connected to the connecting shaft 7 on the side away from the second gear 6 with a bearing retaining ring 10. The bearing retaining ring 10 is sleeved on the outside of the connecting shaft 7 to prevent unnecessary axial movement of the deep groove ball bearing 9 and ensure stable operation of the equipment.

[0034] The loader 18 can be a magnetic powder brake or a hydraulic brake, etc. The loader 18, such as a magnetic powder brake or a hydraulic brake, applies a load to the output shaft 16 to simulate the stress situation in actual operation, so as to test the performance of the output shaft 16 under different load conditions. By using the loader 18, the magnitude of the radial force applied to the output shaft 16 can be precisely controlled. For example, when the loader 18 is a hydraulic brake, the radial force is generated by liquid pressure through components such as oil pumps and oil cylinders. The loading force can be precisely adjusted by adjusting the oil pressure.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0036] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A test structure for the output shaft of a speed reducer, characterized in that, The device includes a mounting base, on which a speed reducer body is mounted. The conveying end of the speed reducer body is connected to a motor via a first sensor. The output end of the speed reducer body has an output shaft. A first gear is sleeved on the outside of the output shaft. A second gear is meshed and connected to one side of the first gear. The second gear is coaxially connected to a connecting shaft that is rotatably connected to the mounting base. Deep groove ball bearings are mounted on both sides of the second gear and are sleeved on the connecting shaft. The connecting shaft is rotatably connected to the mounting base via the deep groove ball bearings. A second sensor and a loader are sequentially connected to the end of the connecting shaft.

2. The test structure for the output shaft of a speed reducer according to claim 1, characterized in that, The reducer body has an input shaft at its conveying end, and input couplings are provided on both sides of the first sensor. The two input couplings are respectively located between the input shaft and the first sensor and between the first sensor and the motor.

3. The test structure for the output shaft of a speed reducer according to claim 1, characterized in that, The second sensor is provided with output couplings at both ends, and the two output couplings are respectively located between the connecting shaft and the second sensor and between the second sensor and the loader.

4. The test structure for the output shaft of a speed reducer according to claim 1, characterized in that, Both the first sensor and the second sensor are torque sensors.

5. The test structure for the output shaft of a speed reducer according to claim 1, characterized in that, A shaft washer is provided at the end of the output shaft away from the reducer body. The outer diameter of the shaft washer is not less than the outer diameter of the bushing. The shaft washer is fixed to the end of the output shaft by screws.

6. The test structure for the output shaft of a speed reducer according to claim 5, characterized in that, The outer side of the bushing is provided with an assembly groove that mates with the first gear.

7. The test structure for the output shaft of a speed reducer according to claim 1, characterized in that, Both ends of the second gear that connect to the connecting shaft are provided with shaft retaining rings, which are sleeved on the connecting shaft.

8. The test structure for the output shaft of a speed reducer according to claim 7, characterized in that, The deep groove ball bearing has a hole-filled elastic retaining ring connected to the mounting base on the side away from the connecting shaft, and a bearing retaining ring is connected to the connecting shaft on the side away from the second gear. The bearing retaining ring is sleeved on the outside of the connecting shaft.

9. The test structure for the output shaft of a speed reducer according to claim 1, characterized in that, The loader is a magnetic powder brake or a hydraulic brake.

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