Speed reducer transmission bearing testing machine

Abstract

This utility model provides a test machine for gearbox transmission bearings, including a mounting platform. The mounting platform is equipped with a drive motor for providing driving force, a torque meter for detecting torque, and a loading motor for being driven to rotate and in generator operation. It also includes a test stand, on which a drive shaft and two bevel gear sets are mounted. The two bevel gear sets are respectively located on the upper and lower sides of the test stand and form transmission engagements with the input shaft and output shaft, respectively. The drive shaft is positioned between the two bevel gear sets. One end of the drive shaft has a test bearing meshing with one of the bevel gear sets, and the other end of the drive shaft has a test position for mounting the bearing to be tested. Addressing the shortcomings of existing technologies, this utility model provides a gearbox transmission bearing test machine that better simulates actual working conditions and ensures effective testing.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing, and in particular to a test machine for gearbox transmission bearings. Background Technology

[0002] As a power transmission mechanism, a speed reducer uses gears to reduce the rotational speed of a power source to the required speed and obtain a larger torque. In this process, the speed reducer's transmission bearings play a crucial role, bearing the key task of supporting the rotating gear shaft or connecting rod, ensuring the speed reducer's stable and efficient operation. Therefore, the performance requirements for these transmission bearings are extremely high. Before leaving the factory, speed reducer transmission bearings often undergo various performance tests. However, existing testing equipment mounts the test bearing on a horizontal shaft and applies radial and axial loads through radial and axial cylinders respectively, simulating the load generated by bevel gear meshing on the bearing. This loading method cannot simulate the installation method of the transmission shaft, nor can it accurately simulate the combined axial, radial, and torque loads borne by the transmission bearing. Furthermore, this testing machine has the defect of asynchronous speed and load changes when the test conditions change, which does not match the actual working condition where the speed and load change synchronously during transmission bearing operation, resulting in poor test results. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a speed reducer transmission bearing testing machine that better simulates actual working conditions and ensures testing effectiveness.

[0004] To achieve the above objectives, this utility model provides a speed reducer transmission bearing testing machine, including a mounting platform. The mounting platform is equipped with a drive motor for providing driving force, a torque meter for detecting torque, and a loading motor for being driven to rotate and in a power generation state. It also includes a test stand, on which a drive shaft and two bevel gear sets are arranged. The two bevel gear sets are respectively located on the upper and lower sides of the test stand and form a transmission engagement with the input shaft and the output shaft, respectively. The drive shaft is located between the two bevel gear sets. One end of the drive shaft is equipped with a test bearing that meshes with one of the bevel gear sets, and the other end of the drive shaft is equipped with a test position for installing the bearing to be tested.

[0005] The advantages of the above technical solution are as follows: The driving motor provides the driving force to the testing machine, which is then increased to the test speed by the speed increaser. The speed and power are transmitted to the transmission shaft and two bevel gear sets in the test stand. Finally, the output shaft speed of the torque meter is reduced by the reducer and drives the loading motor to rotate. At this time, the loading motor is in generator operation mode, used to simulate the total power load when the accessory is working at the accessory transmission gearbox. The positions of the two bevel gear sets, and the test bearings and test positions at both ends of the transmission shaft, ensure that the position and force of the bearing under test in the testing machine are consistent with actual operation. The load ultimately transmitted to the test bearing on the transmission shaft is consistent with the actual load of the bearing at that location on the engine. That is, the loading of the test bearing is achieved through the meshing of the two pairs of bevel gear sets, thus allowing the bearing under test to better simulate the power transmission and load conditions in an actual reducer, ensuring that the test results accurately reflect the bearing's performance in actual applications.

[0006] The present invention can be further configured such that: each of the bevel gear sets includes a meshing first gear and a second gear, the two first gears are respectively connected to the two ends of the transmission shaft, and the two second gears are respectively configured to rotate synchronously with the input shaft and the output shaft.

[0007] By further configuring the transmission shaft with structures that mesh with the first gear at both ends, and combining this with the second gear that rotates synchronously on the input and output shafts, a state consistent with the corresponding part of the engine is formed, thereby improving the accuracy and reliability of the test results.

[0008] The present invention can be further configured such that: a speed reducer is provided on the mounting platform, and the speed reducer is located between the torque tester and the loading motor.

[0009] By further configuring the gearbox between the torque meter and the loading motor, the transmission ratio can be changed, allowing for flexible adjustment of the loading motor's speed and torque output, thus accurately replicating the bearing's operating state under different loads and speeds in the engine.

[0010] The present invention can be further configured such that: a speed increaser is also provided on the mounting platform, and the speed increaser is located between the drive motor and the test seat.

[0011] By further configuring the speed, when the output speed of the driven motor is increased to the test speed by the speed increaser, the actual working conditions of the reducer under high-speed operating conditions are effectively simulated.

[0012] This utility model can be further configured as follows: it includes a test chamber and a lubrication chamber arranged adjacent to each other, the lubrication chamber is provided with a lubrication pipe extending into the test chamber, and the lubrication pipe extends to the test seat.

[0013] By further configuring the test room and the lubrication room to separate them, the influence on the bearing under test can be avoided, and the lubrication method can be kept consistent with the state when the bearing under test is actually installed in the engine, thus better replicating the actual working conditions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 This is an embodiment of the present utility model. Figure 1 An enlarged view of part a;

[0016] Figure 3 This is a schematic diagram of the layout structure in an embodiment of the present utility model;

[0017] The components include: mounting platform 1; drive motor 11; torque meter 12; loading motor 13; reducer 14; speed increaser 15; test seat 2; drive shaft 21; bevel gear set 22; first gear 221; second gear 222; input shaft 23; output shaft 24; test bearing 25; bearing to be tested 26; test room 3; lubrication room 4; air room 5; electrical room 6; operation room 7; and assembly room 8. Detailed Implementation

[0018] An example of the implementation of this utility model of a test machine for gearbox transmission bearings. Figure 1-3 As shown: It includes a mounting platform 1, on which a drive motor 11 for providing driving force, a torque meter 12 for detecting torque, and a load motor 13 for being driven to rotate in a power generation state. It also includes a test stand 2, on which a drive shaft 21 and two bevel gear sets 22 are provided. The two bevel gear sets 22 are respectively located on the upper and lower sides of the test stand and form a transmission engagement with the input shaft 23 and the output shaft 24 respectively. The drive shaft 21 is located between the two bevel gear sets 22. One end of the drive shaft 21 is provided with a test bearing 25 that meshes with one of the bevel gear sets 22. The other end of the drive shaft 21 is provided with a test position for installing the bearing 26 to be tested.

[0019] Each bevel gear set 22 includes a first gear 221 and a second gear 222 that mesh with each other. The two first gears 221 are respectively connected to the two ends of the transmission shaft 21, and the two second gears 222 are respectively configured to rotate synchronously with the input shaft 23 and the output shaft 24.

[0020] The mounting platform 1 is equipped with a reducer 14 and a speed increaser 15. The reducer 14 is located between the torque meter 12 and the loading motor 13, and the speed increaser 15 is located between the drive motor 11 and the test seat 2.

[0021] The input shaft 23 and output shaft 24 on the test stand 2 correspond to the combustion rotor and input gear shaft, respectively. During the test, the rotational speed of the input shaft 23 and the loading power of the loading motor 13 at the test stand are controlled to be consistent with those of the reducer. Therefore, the rotational speed and power transmitted from the first gear 221 below to the second gear 222 below, and the rotational speed and power transmitted from the second gear 222 above to the first gear 221 on the output shaft, are the same as those of the reducer. Moreover, the installation method of both is consistent with the corresponding part of the engine. Therefore, the meshing load on the two first gears 221 is also consistent with the corresponding part of the reducer. Since the structure, installation and lubrication method of the transmission shaft 21, bevel gear set 22, bearing under test 26 and auxiliary bearing 25 in the test stand are consistent with the corresponding parts in the reducer, the load finally transmitted to the bearing under test 26 on the transmission shaft 21 is consistent with the actual load of the bearing at that position on the engine. That is, the loading of the bearing under test is achieved through the meshing of the two pairs of bevel gear sets 22.

[0022] It also includes an adjacent test chamber 3 and a lubrication chamber 4. The lubrication chamber 4 is equipped with a lubrication pipe 41 extending into the test chamber 3 and extending to the test base 2. In this embodiment, it is also divided into an air chamber 5, an electrical chamber 6, an operation chamber 7, and an assembly chamber 8. Each work chamber is relatively independent to avoid mutual interference, forming a test piece lubrication system, an equipment lubrication system, a control system, a testing system, a monitoring system, an online bearing and gear detection system, an online lubricating oil detection system, etc., which can be used for various research tests such as performance tests of gearbox transmission bearings, lubricating oil interruption tests, durability tests, and lubricating oil characteristic tests.

[0023] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A test machine for a reducer transmission bearing, comprising a mounting platform, wherein the mounting platform is equipped with a drive motor for providing driving force, a torque meter for detecting torque, and a loading motor for being driven to rotate and in a generator operation state, characterized in that: The test fixture includes a test stand, on which a drive shaft and two bevel gear sets are mounted. The two bevel gear sets are respectively located on the upper and lower sides of the test stand and form a transmission engagement with the input shaft and the output shaft, respectively. The drive shaft is located between the two bevel gear sets. One end of the drive shaft is provided with a test bearing that meshes with one of the bevel gear sets, and the other end of the drive shaft is provided with a test position for installing the bearing to be tested.

2. The gearbox transmission bearing testing machine according to claim 1, characterized in that: The bevel gear set includes a first gear and a second gear that mesh with each other. The two first gears are respectively connected to the two ends of the transmission shaft, and the two second gears are respectively configured to rotate synchronously with the input shaft and the output shaft.

3. The gearbox transmission bearing testing machine according to claim 1 or 2, characterized in that: A speed reducer is provided on the mounting platform, and the speed reducer is located between the torque meter and the loading motor.

4. The gearbox transmission bearing testing machine according to claim 1 or 2, characterized in that: The mounting platform is also equipped with a speed increaser, which is located between the drive motor and the test base.

5. The gearbox transmission bearing testing machine according to claim 1, characterized in that: It includes a test chamber and a lubrication chamber arranged adjacent to each other. The lubrication chamber is provided with a lubrication pipe that extends into the test chamber and extends to the test seat.

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