Test bench for high-speed axial oil supply of coaxial reducer

Abstract

The utility model discloses a coaxial speed reducer high -speed axial oil supply's test bench, including female board, bearing seat, transmission assembly, dynamometer, constant temperature oil supply system, sensing assembly and host computer. Female board is used to install coaxial speed reducer, and bearing seat contains seat body and hollow rotating shaft, and seat body is equipped with oil inlet and radial oil channel, and the outer circular surface of hollow rotating shaft is provided with radial hole and forms axial oil channel in the inside, and radial hole is communicated with radial oil channel and axial oil channel. Transmission assembly realizes power transmission between hollow rotating shaft, coaxial speed reducer input end and output end, and dynamometer is connected with transmission assembly to provide or load torque. Constant temperature oil supply system forms oil supply circulation with oil inlet and speed reducer oil return, and sensing assembly detects oil supply parameter. Host computer is electrically connected with each part, receives detection signal and controls operation and oil supply parameter. The bench realizes radial-axial oil supply conversion stably through the channel design of hollow rotating shaft, improves test efficiency and data accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing devices. Specifically, this utility model relates to a test bench for high-speed axial oil supply of a coaxial reducer. Background Technology

[0002] Coaxial reducers are characterized by their coaxial arrangement of the input and output shafts, resulting in a compact structure suitable for high-power-density transmission applications. During the research and development testing phase of coaxial reducers, to accurately simulate their actual operating conditions within the assembly and ensure the accuracy and reference value of test data, it is necessary to provide the reducer with lubrication conditions consistent with actual applications. Due to the structural characteristics of coaxial reducers, circulating lubricating oil must be introduced through an axial oil passage at the center of the input shaft during actual operation to achieve lubrication and heat dissipation for key transmission components such as internal gears and bearings. Therefore, the test bench must meet the requirement of providing a fixed flow rate of circulating lubricating oil axially through the center of the input shaft.

[0003] However, existing coaxial reducer test benches have obvious technical shortcomings. Traditional benches mostly use radial oil supply to directly lubricate the outside of the reducer, which cannot simulate the axial oil supply scenario under real working conditions. This results in a large deviation between the test environment and the actual application environment, and the test data is difficult to reflect the true performance of the reducer.

[0004] This invention provides a test bench for high-speed axial oil supply of coaxial reducers, specifically addressing how to stably achieve the conversion from radial oil inlet to axial oil supply under test conditions, thereby improving R&D testing efficiency and data accuracy. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a test bench for high-speed axial oil supply in a coaxial reducer, with the purpose of enabling stable conversion from radial to axial oil supply under test conditions, thereby improving R&D testing efficiency and data accuracy.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a test bench for high-speed axial oil supply of a coaxial reducer, comprising: Mother plate, which is used to mount the coaxial reducer; A bearing housing includes a housing body and a hollow rotating shaft rotatably connected to the housing body. The housing body is provided with an oil inlet and a radial oil passage. A radial hole is opened on the outer circular surface of the hollow rotating shaft. An axial oil passage is formed inside the hollow rotating shaft. The radial hole communicates with the radial oil passage and the axial oil passage. A transmission assembly is used to realize the power transmission between the hollow rotating shaft, the input shaft of the coaxial reducer, and the output end; A dynamometer, connected to the transmission assembly, is used to provide or apply torque; The constant temperature oil supply system has its oil outlet connected to the oil inlet, and its oil return end connected to the oil return port of the coaxial reducer, forming an oil supply cycle. Sensing components, including a fuel supply sensor for detecting fuel supply parameters; and The host computer is electrically connected to the dynamometer, the constant temperature oil supply system, and the sensing components, respectively, and is used to receive the detection signals from the sensing components and control the operating parameters of the dynamometer and the oil supply parameters of the constant temperature oil supply system.

[0007] The transmission assembly includes a first transmission shaft, a second transmission shaft, a coupling, a first torque sensor, and a second torque sensor. The hollow rotating shaft is connected to one end of the first transmission shaft via the coupling. The other end of the first transmission shaft is connected to the first torque sensor. The first torque sensor is connected to a first dynamometer. The output end of the coaxial reducer is connected to one end of the second transmission shaft. The other end of the second transmission shaft is connected to the second torque sensor. The second torque sensor is connected to a second dynamometer.

[0008] The mother plate and the bearing housing are located between the first dynamometer and the second dynamometer.

[0009] The oil supply sensor includes a temperature sensor, a pressure sensor, and a flow sensor. The temperature sensor includes a first temperature sensor and a second temperature sensor. The first temperature sensor, the pressure sensor, and the flow sensor are installed on the pipeline between the oil outlet of the constant temperature oil supply system and the oil inlet. The second temperature sensor is installed on the pipeline between the oil return port of the coaxial reducer and the oil return end of the constant temperature oil supply system.

[0010] The pressure sensor is located between the first temperature sensor and the flow sensor.

[0011] The radial holes of the hollow rotating shaft are evenly distributed along the circumference, and the number of the radial holes is 4-8.

[0012] This utility model discloses a test bench for high-speed axial oil supply of a coaxial reducer. The transmission shaft of the bearing housing is designed as a hollow structure, and a channel is opened on the outer circular surface of the corresponding part of the oil inlet of the bearing housing so that oil can flow radially into the transmission shaft and flow axially. This enables the stable conversion from radial oil inlet to axial oil supply under test conditions, thereby improving the efficiency of R&D testing and data accuracy. Attached Figure Description

[0013] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the test bench for high-speed axial oil supply of the coaxial reducer of this utility model; The components in the diagram are labeled as follows: 1. Mother plate; 2. Coaxial reducer; 3. Oil return port; 4. Base; 5. Oil inlet; 6. Host computer; 7. Axial direction; 8. Hollow rotating shaft; 9. Coupling; 10. First drive shaft; 11. First torque sensor; 12. First dynamometer; 13. Second drive shaft; 14. Second torque sensor; 15. Second dynamometer; 16. Constant temperature oil supply system; 17. First temperature sensor; 18. Pressure sensor; 19. Flow sensor; 20. Second temperature sensor. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of this utility model, and to facilitate its implementation.

[0015] It should be noted that in the following embodiments, the terms "first" and "second" do not represent an absolute distinction in structure and / or function, nor do they represent the order of execution, but are merely for the convenience of description.

[0016] like Figure 1 As shown, this utility model provides a test bench for high-speed axial oil supply of a coaxial reducer, comprising: Mother plate 1, which is used to mount coaxial reducer 2; The bearing housing includes a housing body 4 and a hollow rotating shaft 8 rotatably connected to the housing body 4. The housing body 4 is provided with an oil inlet 5 and a radial oil passage. A radial hole is opened on the outer circular surface of the hollow rotating shaft 8. An axial oil passage is formed inside the hollow rotating shaft 8. The radial hole communicates with the radial oil passage and the axial oil passage. The transmission assembly is used to realize the power transmission between the hollow rotating shaft 8, the input end (the sun gear inside the coaxial reducer 2), and the output end of the coaxial reducer 2; A dynamometer, connected to the transmission assembly, is used to provide or apply torque; The constant temperature oil supply system 16 has its oil outlet end connected to the oil inlet 5, and its oil return end connected to the oil return port 3 of the coaxial reducer 2, forming an oil supply cycle. Sensing components, including a fuel supply sensor for detecting fuel supply parameters; and The host computer 6 is electrically connected to the dynamometer, the constant temperature oil supply system 16 and the sensing components, respectively. It is used to receive the detection signals from the sensing components and control the operating parameters of the dynamometer and the oil supply parameters of the constant temperature oil supply system 16.

[0017] Specifically, such as Figure 1As shown, the base 4 and the mother plate 1 are fixedly installed and arranged horizontally. The hollow rotating shaft 8 is rotatably mounted on the base 4, and the coaxial gearbox is fixed on the mother plate 1. The dynamometer includes a first dynamometer 12 and a second dynamometer, with the mother plate 1 and the bearing seat located between the first dynamometer 12 and the second dynamometer.

[0018] like Figure 1 As shown, the transmission assembly includes a first drive shaft 10, a second drive shaft 13, a coupling 9, a first torque sensor 11, and a second torque sensor 14. One end of the hollow rotating shaft 8 is connected to the input end of the coaxial reducer 2, and the other end of the hollow rotating shaft 8 is connected to one end of the first drive shaft 10 via the coupling 9. The other end of the first drive shaft 10 is connected to the first torque sensor, which is connected to the first dynamometer 12. The output end of the coaxial reducer 2 is connected to one end of the second drive shaft 13, and the other end of the second drive shaft 13 is connected to the second torque sensor, which is connected to the second dynamometer. The torque transmission direction is: first dynamometer 12, first torque sensor 11, first drive shaft 10, hollow rotating shaft 8, through coaxial reducer 2, second drive shaft 13, second torque sensor 14, and second dynamometer.

[0019] like Figure 1 As shown, the oil inlet 5 is located on the outer surface of the seat 4. The radial oil passage extends radially from the outer surface of the seat 4 to the inner circular surface of the shaft hole of the seat 4. The hollow rotating shaft 8 is located in the shaft hole of the seat 4. The length direction of the radial oil passage is radial to the shaft hole. The radial hole extends radially from the outer circular surface of the hollow rotating shaft 8 to the inner circular surface of the center hole of the hollow rotating shaft 8. The radial holes of the hollow rotating shaft 8 are evenly distributed circumferentially, and the number of radial holes is 4-8. The radial holes connect the axial oil passage and the radial oil passage, guiding the lubricating oil from the radial oil passage to the axial oil passage. The axial oil passage extends to the end of the hollow rotating shaft 8, and the end face of the hollow rotating shaft 8 is provided with an opening for the lubricating oil to flow out. The axial oil passage can guide the lubricating oil to the input end component of the coaxial reducer 2.

[0020] like Figure 1 As shown, the oil supply sensor includes a temperature sensor, a pressure sensor 18, and a flow sensor 19. The temperature sensor includes a first temperature sensor 17 and a second temperature sensor 20. The first temperature sensor 17, pressure sensor 18, and flow sensor 19 are disposed on the pipeline between the oil outlet and the oil inlet 5 of the constant temperature oil supply system 16. The second temperature sensor 20 is disposed on the pipeline between the oil return port 3 of the coaxial reducer 2 and the oil return end of the constant temperature oil supply system 16. The pressure sensor 18 is located between the first temperature sensor 17 and the flow sensor 19.

[0021] The lubricating oil supplied by the constant-temperature oil supply system 16 passes through the temperature sensor, pressure sensor 18, and flow sensor 19, flows through the oil inlet 5 of the bearing housing, enters the hollow rotating shaft 8 radially, and then flows axially 7 into the center of the sun gear inside the coaxial reducer 2, where it is sprayed into the secondary planetary mechanism to achieve lubrication. After returning, the lubricating oil flows out through the return port 3 at the bottom of the coaxial reducer 2, passes through the second temperature sensor 20, and returns to the constant-temperature oil supply system 16.

[0022] During the test, it is necessary to control the input torque and output rotation speed of the coaxial reducer 2, the flow rate and temperature of the lubrication channel at the bearing housing oil inlet, and to measure the input and output speed and torque in real time to meet the requirements of efficiency or durability tests.

[0023] The constant temperature oil supply system 16 includes components such as an oil pump. The oil pump is electrically connected to the host computer 6. The host computer 6 can control the operating parameters of the two dynamometers and the flow rate of the oil pump, which can realize the flexibility of testing.

[0024] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A test bench for high-speed axial oil supply of a coaxial reducer, characterized in that, include: Mother plate, which is used to mount the coaxial reducer; A bearing housing includes a housing body and a hollow rotating shaft rotatably connected to the housing body. The housing body is provided with an oil inlet and a radial oil passage. A radial hole is opened on the outer circular surface of the hollow rotating shaft. An axial oil passage is formed inside the hollow rotating shaft. The radial hole communicates with the radial oil passage and the axial oil passage. A transmission assembly is used to realize the power transmission between the hollow rotating shaft, the input end and the output end of the coaxial reducer; The dynamometer is connected to the transmission assembly; The constant temperature oil supply system has its oil outlet connected to the oil inlet, and its oil return end connected to the oil return port of the coaxial reducer, forming an oil supply cycle. Sensing components, including a fuel supply sensor for detecting fuel supply parameters; and The host computer is electrically connected to the dynamometer, the constant temperature oil supply system, and the sensing components, respectively.

2. The test bench for high-speed axial oil supply of the coaxial reducer according to claim 1, characterized in that, The transmission assembly includes a first transmission shaft, a second transmission shaft, a coupling, a first torque sensor, and a second torque sensor. The hollow rotating shaft is connected to one end of the first transmission shaft via the coupling. The other end of the first transmission shaft is connected to the first torque sensor. The first torque sensor is connected to a first dynamometer. The output end of the coaxial reducer is connected to one end of the second transmission shaft. The other end of the second transmission shaft is connected to the second torque sensor. The second torque sensor is connected to a second dynamometer.

3. The test bench for high-speed axial oil supply of the coaxial reducer according to claim 2, characterized in that, The mother plate and the bearing housing are located between the first dynamometer and the second dynamometer.

4. The test bench for high-speed axial oil supply of the coaxial reducer according to any one of claims 1 to 3, characterized in that, The oil supply sensor includes a temperature sensor, a pressure sensor, and a flow sensor. The temperature sensor includes a first temperature sensor and a second temperature sensor. The first temperature sensor, the pressure sensor, and the flow sensor are installed on the pipeline between the oil outlet of the constant temperature oil supply system and the oil inlet. The second temperature sensor is installed on the pipeline between the oil return port of the coaxial reducer and the oil return end of the constant temperature oil supply system.

5. The test bench for high-speed axial oil supply of the coaxial reducer according to claim 4, characterized in that, The pressure sensor is located between the first temperature sensor and the flow sensor.

6. The test bench for high-speed axial oil supply of the coaxial reducer according to any one of claims 1 to 3, characterized in that, The radial holes of the hollow rotating shaft are evenly distributed along the circumference, and the number of the radial holes is 4-8.

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