Load loading mechanism and inspection device for gear transmission experiment

Abstract

The utility model relates to the technical field of mechanical precision machining, in particular to a load loading mechanism and an inspection device for a gear transmission experiment. The load loading mechanism comprises a loading shaft and a loading gear arranged on the loading shaft, a meshing section is formed on the loading shaft, and the loading gear is correspondingly meshed with the meshing section, so that the loading gear moves along the axial direction of the meshing section until the loading gear is correspondingly meshed with the pre-installed test gear; the loading shaft is rotated by a load and drives the loading gear to rotate in the same direction as the test gear. According to the utility model, the loading gear can move along the axial direction of the meshing section to be correspondingly meshed with the pre-installed test gear, and can rotate along with the rotation of the loading shaft, so that the axial position of the loading gear can be adjusted in real time to be matched with the test gear when the loading gear faces the test gears at different axial installation positions, and the test precision is improved. Therefore, the device is suitable for testing gears at different axial installation positions.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical precision machining, in particular to a load loading mechanism and a testing device for a gear transmission experiment. Background Art

[0002] Gear transmission is the most critical transmission mode in mechanical transmission. With the continuous development of precision transmission technology, various industries have higher and higher requirements for gear transmission. In particular, the gear tooth life, fatigue strength and transmission error of the gear have a great impact on the entire transmission system. Therefore, it is necessary to test and verify the gear tooth life, fatigue strength, transmission error and other performances on a dedicated test device. Cylindrical gears are the most commonly used structural parts in gears. They have the widest application and the largest usage. Therefore, transmission tests of cylindrical gears are even more necessary. By conducting targeted performance verification of cylindrical gears on the test bench, it is ensured that the various performances of cylindrical gears meet the design conditions.

[0003] The current test methods for cylindrical gears include: using a mating gear that matches the test gear to drive the test gear to rotate to provide power output, the mating gear is driven to rotate by the test gear as a follower, and a reverse rotation torque is applied to the mating gear to apply a load to the transmission of the test gear, thereby simulating the actual transmission condition of the test gear by changing the loading conditions, and at the same time collecting various data in the test gear experiment to verify the performance of the test gear.

[0004] However, in order to ensure the stability of the test gear transmission during the experiment, the position of the paired gear is usually fixed, and the paired gear is a standard part, which means that the paired gear can only be tested for the same model of test gear. When faced with test gears in different axial installation positions, the traditional gear test method is not applicable. Summary of the invention

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a load loading mechanism and a testing device for gear transmission experiments, so as to solve the problem that the cylindrical gear testing method in the prior art cannot test the test gears in different axial installation positions.

[0006] The present invention discloses a load loading mechanism for a gear transmission experiment, comprising a loading shaft and a loading gear arranged on the loading shaft, wherein a meshing section is formed on the loading shaft, and the loading gear meshes with the meshing section accordingly, so that after the loading gear is axially displaced along the meshing section to mesh with a pre-installed test gear accordingly, the loading shaft is rotated when a load is applied thereto and drives the loading gear to rotate in the same direction as the test gear.

[0007] Optionally, the meshing section includes an external spline arranged on the loading shaft, and an internal spline corresponding to the external spline is arranged in the wheel hole of the loading gear; or

[0008] The meshing section is a polygonal shaft section arranged on the loading shaft, and the wheel hole of the loading gear is a polygonal hole corresponding to the polygonal shaft section.

[0009] Optionally, the load loading mechanism also includes a positioning assembly, which includes a first adjustment sleeve arranged on the loading shaft on one side of the loading gear, and a second adjustment sleeve arranged on the loading shaft on the other side of the loading gear, so that after the loading gear is displaced, the first adjustment sleeve and the second adjustment sleeve clamp and limit the axial displacement of the loading gear.

[0010] Optionally, the load loading mechanism further comprises a first support seat and a first locking nut, the loading shaft is rotatably arranged on the first support seat, and the ends of the loading shaft located on both sides of the first support seat are respectively a load input end and a load output end;

[0011] The second adjustment sleeve, the loading gear, the first adjustment sleeve and the first locking nut are sequentially arranged on the load output end of the loading shaft, so that after the first adjustment sleeve and the second adjustment sleeve clamp the loading gear, the first locking nut and the first support seat lock and limit the axial displacement of the loading gear.

[0012] Optionally, a first positioning hole corresponding to the loading shaft is provided on the first support seat, a first bearing is provided in the first positioning hole, and the loading shaft is rotatably connected to the first support seat through the first bearing;

[0013] A first limiting protrusion is formed on the loading shaft, and the first bearing is located between the second adjusting sleeve and the first limiting protrusion, so that after the first locking nut is locked, the second adjusting sleeve and the first limiting protrusion limit the axial displacement of the loading shaft.

[0014] Optionally, two opposite first bearings are arranged in the first positioning hole, and a first positioning sleeve sleeved on the loading shaft is arranged between the two first bearings, so that the first positioning sleeve cooperates with the two first bearings to center and position the loading shaft.

[0015] Optionally, the load loading mechanism further comprises a second support seat and a second locking nut, the loading shaft is rotatably disposed on the second support seat, and the first support seat and the second support seat are located between the load input end and the load output end of the loading shaft;

[0016] A second limiting protrusion is formed on the loading shaft on one side of the second support seat, and the second locking nut is located on the other side of the second support seat and is arranged on the loading shaft, so that after the second locking nut is locked, the second locking nut and the second limiting protrusion lock and limit the axial displacement of the loading shaft.

[0017] Optionally, a second positioning hole corresponding to the loading shaft is provided on the second support seat, and two opposite second bearings are provided in the second positioning hole. The loading shaft is rotatably connected to the second support seat through the second bearings, and a second positioning sleeve is provided between the two second bearings and is sleeved on the loading shaft, so that the second positioning sleeve cooperates with the two second bearings to center the loading shaft.

[0018] Based on the load loading mechanism of the gear transmission experiment, the utility model further provides a testing device, including a test box, a test shaft and a load loading mechanism arranged in the test box, and a test driving device and a load driving device located outside the test box;

[0019] The test shaft is provided with an assembly section for pre-installing the test gear, so that after the test gear is installed on the assembly section of the test shaft, the loading gear is axially displaced along the meshing section to mesh with the test gear;

[0020] The output end of the test drive device is connected to the test shaft, so that after the test gear and the loading gear are meshed, the test drive device drives the test shaft to drive the test gear to rotate for transmission;

[0021] The output end of the load driving device is connected to the loading shaft, so that after the test gear rotates, the load driving device drives the loading shaft to drive the loading gear to rotate in the opposite direction to load the load.

[0022] Optionally, the inspection device further comprises a sensor module arranged on one or more of the loading shaft, the loading gear, the test shaft and the test gear, so that the sensor module collects transmission data of the test gear.

[0023] Compared with the prior art, the load loading mechanism and the testing device for the gear transmission experiment provided by the embodiment of the utility model have the following beneficial effects:

[0024] A load loading mechanism including a loading shaft and a loading gear is provided. The loading gear and the meshing section on the loading shaft are meshed correspondingly, so that the loading gear can be axially displaced along the meshing section to mesh correspondingly with the pre-installed test gear, and can rotate with the rotation of the loading shaft, so that when facing test gears with different axial installation positions, the axial position of the loading gear can be adjusted in real time to match the test gear, so as to be suitable for the inspection of test gears with different axial installation positions. At the same time, the loading shaft is rotated by the load applied and drives the loading gear to rotate in the same direction as the test gear, so as to apply a load to the transmission of the test gear, thereby simulating the actual transmission condition of the test gear by changing the loading conditions, so as to facilitate the subsequent collection of various data in the test gear experiment to verify the performance of the test gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0026] Figure 1 A schematic diagram of the overall structure of a load loading mechanism provided by an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the internal structure of a load loading mechanism provided in an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of a loading gear and a loading shaft provided in an embodiment of the utility model through spline matching;

[0029] Figure 4 A schematic diagram of the structure of the loading gear and the loading shaft provided in the embodiment of the utility model matched through a polygonal shaft segment;

[0030] Figure 5 This is a schematic diagram of the overall structure of the inspection device provided in an embodiment of the utility model.

[0031] The reference numerals in the figures are:

[0032] 1. Loading shaft; 11. Engaging section; 12. First limiting protrusion; 13. Second limiting protrusion; 2. Loading gear; 3. Positioning assembly; 31. First adjusting sleeve; 32. Second adjusting sleeve; 4. First supporting seat; 41. First bearing; 42. First positioning sleeve; 5. First locking nut; 6. Second supporting seat; 61. Second bearing; 62. Second positioning sleeve; 7. Second locking nut; 8. Test box; 81. Test shaft; 82. Test gear. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0034] The present invention provides a load loading mechanism for a gear transmission experiment. Figure 1 and Figure 2 As shown, it includes a loading shaft 1 and a loading gear 2 arranged on the loading shaft 1. A meshing section 11 is formed on the loading shaft 1, and the loading gear 2 meshes with the meshing section 11 accordingly, so that after the loading gear 2 is axially displaced along the meshing section 11 to mesh with the pre-installed test gear 82, the loading shaft 1 is rotated by the load applied and drives the loading gear 2 to rotate in the same direction as the test gear 82. Through the above-mentioned structural setting, by using the corresponding meshing of the loading gear 2 and the meshing section 11 on the loading shaft 1, the loading gear 2 can be axially displaced along the meshing section 11 to mesh with the pre-installed test gear 82, and can rotate with the rotation of the loading shaft 1, so that when facing the test gear 82 in different axial installation positions, the axial position of the loading gear 2 can be adjusted in real time to match it with the test gear 82, so as to be suitable for the inspection of the test gear 82 in different axial installation positions. Then, the loading shaft 1 can be loaded and rotated to drive the loading gear 2 to rotate in the same direction as the test gear 82, so as to apply load to the transmission of the test gear 82, so as to simulate the actual transmission condition of the test gear 82, and collect various data in the subsequent test gear 82 experiment to verify the performance of the test gear 82. The load loading mechanism of the embodiment of the utility model can be applied to the performance inspection test of different types of gears such as cylindrical gears, bevel gears and bevel gears.

[0035] Furthermore, combined with Figure 3 and Figure 4 As shown, the meshing section 11 includes an external spline arranged on the loading shaft 1, and an internal spline corresponding to the external spline is arranged in the wheel hole of the loading gear 2; or

[0036] The meshing section 11 is a polygonal shaft section arranged on the loading shaft 1, and the wheel hole of the loading gear 2 is a polygonal hole corresponding to the polygonal shaft section.

[0037] Through the above-mentioned structural setting, the meshing section 11 of the external spline and the loading gear 2 of the internal spline are matched, or the polygonal meshing section 11 and the loading gear 2 with the polygonal hole are matched to realize the meshing of the loading gear 2 and the meshing section 11, so that the loading gear 2 can be axially displaced along the meshing section 11 and can also rotate with the rotation of the loading shaft 1, so that in the process of testing the performance of the test gear 82, according to the axial installation position of the test gear 82, the axial position of the loading gear 2 is adjusted to match the test gear 82, and the loading shaft 1 is driven to rotate to drive the loading gear 2 to rotate in the same direction as the test gear 82, and a load is applied to the transmission of the test gear 82, so as to simulate the actual transmission of the test gear 82. Preferably, the meshing of the loading gear 2 and the meshing section 11 is not limited to the above two methods, and can also include conventional matching structures such as helical splines, slide grooves and sliders that can realize the axial displacement and simultaneous rotation of the loading gear 2.

[0038] Further, look back Figure 1 and Figure 2 , the load loading mechanism also includes a positioning assembly 3. The positioning assembly 3 includes a first adjustment sleeve 31 disposed on the loading shaft 1 at one side of the loading gear 2, and a second adjustment sleeve 32 disposed on the loading shaft 1 at the other side of the loading gear 2, so that after the loading gear 2 is displaced, the first adjustment sleeve 31 and the second adjustment sleeve 32 clamp and limit the axial displacement of the loading gear 2. Through the above-mentioned structural setting, the first adjustment sleeve 31 and the second adjustment sleeve 32 are arranged on both sides of the loading gear 2, so that after the loading gear 2 adjusts the axial position, the axial displacement of the loading gear 2 is clamped and limited, so as to avoid the axial offset of the loading gear 2 during the performance test of the test gear 82, thereby ensuring the accuracy of the transmission test of the test gear 82.

[0039] Furthermore, the load loading mechanism further includes a first support seat 4 and a first locking nut 5. The loading shaft 1 is rotatably disposed on the first support seat 4, and the ends of the loading shaft 1 located on both sides of the first support seat 4 are respectively a load input end and a load output end;

[0040] The second adjustment sleeve 32, the loading gear 2, the first adjustment sleeve 31 and the first locking nut 5 are sequentially arranged on the load output end of the loading shaft 1, so that after the first adjustment sleeve 31 and the second adjustment sleeve 32 clamp the loading gear 2, the first locking nut 5 and the first support seat 4 lock and limit the axial displacement of the loading gear 2.

[0041] Through the above-mentioned structural setting, the first support seat 4 provides support for the loading shaft 1, so that the loading shaft 1 is stably driven and rotated during the performance test of the test gear 82. Among them, the load input end of the loading shaft 1 is used to connect the driving device, and the load output end of the loading shaft 1 corresponds to the pre-installed test gear 82. At the same time, the first locking nut 5 is preferably connected to the load output end of the loading shaft 1 by threaded connection. After the second adjustment sleeve 32, the loading gear 2, and the first adjustment sleeve 31 are sequentially sleeved on the load output end of the loading shaft 1, the first locking nut 5 is screwed on the load output end of the loading shaft 1, and as the first locking nut 5 is screwed in, the second adjustment sleeve 32, the loading gear 2, and the first adjustment sleeve are screwed on the side of the first support seat 4 to lock and limit the axial displacement of the loading gear 2, thereby avoiding the axial offset of the loading gear 2 during the performance test of the test gear 82, so as to ensure the accuracy of the transmission test of the test gear 82.

[0042] As described above, when the structure and size of the test gear 82 are changed, the size and axial position of the loading gear 2 need to be changed. At this time, the first locking nut 5, the first adjusting sleeve 31, the loading gear 2 and the second adjusting sleeve 32 need to be removed in sequence, and the loading gear 2 that matches the structure and size of the test gear 82 needs to be replaced. Then, according to the replaced loading gear 2, the appropriate first adjusting sleeve 31 and the second adjusting sleeve 32 are matched. After the replacement, the first adjusting sleeve 31, the loading gear 2 and the second adjusting sleeve 32 are all installed on the loading shaft 1, and finally locked and fixed by the first locking nut 5;

[0043] When only the axial installation position of the test gear 82 is changed, it is only necessary to axially move the loading gear 2 and replace the first adjustment sleeve 31 and the second adjustment sleeve 32 appropriately.

[0044] Furthermore, a first positioning hole corresponding to the loading shaft 1 is provided on the first support seat 4. A first bearing 41 is provided in the first positioning hole, and the loading shaft 1 is rotatably connected to the first support seat 4 through the first bearing 41;

[0045] A first limiting protrusion 12 is formed on the loading shaft 1 , and the first bearing 41 is located between the second adjusting sleeve 32 and the first limiting protrusion 12 , so that after the first locking nut 5 is locked, the second adjusting sleeve 32 and the first limiting protrusion 12 limit the axial displacement of the loading shaft 1 .

[0046] Through the above-mentioned structural setting, the loading shaft 1 is rotatably connected with the first support seat 4 through the first bearing 41, and the first support seat 4 provides stable support for the loading shaft 1, and the first bearing 41 ensures the correct positioning and rotation of the loading shaft 1 on the first support seat 4, so as to work together to support the rotational movement and transmit torque. At the same time, after the first locking nut 5 is locked, the second adjustment spacer 32 and the first limiting protrusion 12 are used to limit the axial displacement of the loading shaft 1, so as to avoid the axial deviation of the loading shaft 1 during the performance test of the test gear 82, thereby ensuring the accuracy of the transmission test of the test gear 82.

[0047] Furthermore, two first bearings 41 are arranged opposite to each other in the first positioning hole, and a first positioning sleeve 42 is arranged between the two first bearings 41 and is sleeved on the loading shaft 1, so that the first positioning sleeve 42 cooperates with the two first bearings 41 to center the loading shaft 1. Through the above-mentioned structural setting, by installing two first bearings 41 opposite to each other on the first support seat 4, the load on the loading shaft 1 can be dispersed, and the burden of the first support seat 4 can be reduced, thereby improving the bearing capacity and reliability of the entire system, and can work together to maintain the centering of the loading shaft 1. At the same time, the first positioning sleeve 42 can provide additional axial positioning to prevent the loading shaft 1 from generating unnecessary axial movement due to force. And by changing the size of the first positioning sleeve 42, the distance between the two first bearings 41 can be precisely adjusted to achieve better centering, thereby reducing the additional load and stress caused by eccentricity.

[0048] Furthermore, the load loading mechanism further includes a second support seat 6 and a second locking nut 7. The loading shaft 1 is rotatably disposed on the second support seat 6, and the first support seat 4 and the second support seat 6 are located between the load input end and the load output end of the loading shaft 1;

[0049] A second limiting protrusion 13 is formed on one side of the second support seat 6 on the loading shaft 1, and the second locking nut 7 is located on the other side of the second support seat 6 and is arranged on the loading shaft 1, so that after the second locking nut 7 is locked, the second locking nut 7 and the second limiting protrusion 13 lock and limit the axial displacement of the loading shaft 1.

[0050] Through the above-mentioned structural setting, on the basis of the second support seat 6, the second support seat 6 further provides stable support for the loading shaft 1 to ensure that the loading shaft 1 is driven to stably transmit during the performance test of the test gear 82. At the same time, after being locked by the second locking nut 7, the second locking nut 7 and the second limiting protrusion 13 lock and limit the axial displacement of the loading shaft 1, so that the corresponding structures are respectively set at the two ends of the loading shaft 1 based on the first support seat 4 and the second support seat 6 to jointly limit the axial displacement of the loading shaft 1, so as to improve the reliability of the position fixation of the loading shaft 1, avoid the axial deviation of the loading shaft 1 during the performance test of the test gear 82, and thus improve the accuracy of the transmission test of the test gear 82.

[0051] Furthermore, the second support seat 6 is provided with a second positioning hole corresponding to the loading shaft 1. Two second bearings 61 are arranged opposite to each other in the second positioning hole, and the loading shaft 1 is rotatably connected to the second support seat 6 through the second bearings 61, and a second positioning sleeve 62 sleeved on the loading shaft 1 is arranged between the two second bearings 61, so that the second positioning sleeve 62 cooperates with the two second bearings 61 to center and position the loading shaft 1.

[0052] Through the above-mentioned structural setting, by installing two opposite second bearings 61 on the second support seat 6, the load on the loading shaft 1 can be further dispersed, and the burden on the first support seat 4 and the second support seat 6 can be reduced, thereby improving the load-bearing capacity and reliability of the entire system, and can work together to maintain the centering of the loading shaft 1. At the same time, the second positioning sleeve 62 can provide additional axial positioning to prevent the loading shaft 1 from generating unnecessary axial movement due to force. And by changing the size of the second positioning sleeve 62, the distance between the two second bearings 61 can be precisely adjusted to achieve better centering, thereby reducing the additional load and stress caused by eccentricity.

[0053] Based on the load loading mechanism of the gear transmission experiment, the utility model also provides a testing device, combined with Figure 2 and Figure 5 As shown, it includes a test box 8, a test shaft 81 and a load loading mechanism arranged in the test box 8, and a test driving device and a load driving device located outside the test box 8;

[0054] The test shaft 81 is provided with an assembly section for pre-installing the test gear 82, so that after the test gear 82 is installed on the assembly section of the test shaft 81, the loading gear 2 is axially displaced along the meshing section 11 to mesh with the test gear 82;

[0055] The output end of the test drive device is connected to the test shaft 81, so that after the test gear 82 and the loading gear 2 are meshed, the test drive device drives the test shaft 81 to drive the test gear 82 to rotate for transmission;

[0056] The output end of the load driving device is connected to the loading shaft 1, so that after the test gear 82 rotates, the load driving device drives the loading shaft 1 to drive the loading gear 2 to rotate in the opposite direction to load the load.

[0057] Through the above-mentioned structural setting, after the loading gear 2 is axially displaced along the meshing section 11 to mesh with the test gear 82, the test drive device drives the test shaft 81 to drive the test gear 82 to rotate for transmission, and at this time, the test gear 82 drives the loading gear 2 to rotate relatively. Then, the load drive device drives the loading shaft 1 to drive the loading gear 2 to rotate in the same direction as the test gear 82, that is, to give the loading gear 2 a torque for reverse rotation to apply a load to the transmission of the test gear 82, thereby simulating the actual transmission condition of the test gear 82 by changing the magnitude of the output torque of the load drive device, so as to facilitate the subsequent collection of various data in the test gear 82 experiment to verify the performance of the test gear 82.

[0058] Furthermore, the inspection device further includes a sensor module disposed on one or more of the loading shaft 1, the loading gear 2, the test shaft 81 and the test gear 82, so that the sensor module collects the transmission data of the test gear 82. Through the above-mentioned structural setting, the sensor module is preferably arranged as follows:

[0059] (1) Vibration sensor: installed on the gearbox housing to monitor the overall vibration; or installed near the bearing to monitor the vibration of the bearing; or installed near the gear to monitor the vibration of the gear itself.

[0060] (2) Temperature sensor: Installed near the gear to monitor the temperature of the gear surface; or, if conditions permit, consider installing a temperature sensor at the bearing.

[0061] (3) Speed ​​sensor: directly mounted on the gear shaft to monitor the speed; or, use an encoder or Hall effect sensor to monitor the speed of the gear.

[0062] (4) Torque sensor: installed on the gear shaft to monitor torque; or, use an elastomeric or magnetoelectric sensor to measure torque.

[0063] The load loading mechanism and testing device of the gear transmission experiment of the embodiment of the utility model have the following beneficial effects:

[0064] 1. The loading gear 2 is a conventional standard part with simple structure, low processing difficulty and low cost;

[0065] 2. For the test of the test gear 82 with different axial installation positions, it is only necessary to adjust the axial position of the loading gear 2 to match it with the test gear 82, so as to be suitable for the inspection of the test gear 82 with different axial installation positions. The loading gear 2 can be used multiple times, and it is only necessary to replace the adjustment sleeves on both sides of the loading gear 2, which is convenient for replacement.

[0066] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the protection scope of the claims attached to the present invention.

Claims

1. A load loading mechanism for a gear transmission experiment, characterized in that: The load loading mechanism includes a loading shaft and a loading gear arranged on the loading shaft. A meshing section is formed on the loading shaft, and the loading gear is meshed with the meshing section accordingly, so that after the loading gear is axially displaced along the meshing section to mesh with the pre-installed test gear, the loading shaft is rotated when load is applied and drives the loading gear to rotate in the same direction as the test gear.

2. The load loading mechanism for gear transmission experiment according to claim 1, characterized in that: The meshing section includes an external spline arranged on the loading shaft, and the wheel hole of the loading gear is provided with an internal spline corresponding to the external spline; or The meshing section is a polygonal shaft section arranged on the loading shaft, and the wheel hole of the loading gear is a polygonal hole corresponding to the polygonal shaft section.

3. The load loading mechanism for gear transmission experiment according to claim 1, characterized in that: The load loading mechanism also includes a positioning assembly, which includes a first adjustment sleeve arranged on the loading shaft at one side of the loading gear, and a second adjustment sleeve arranged on the loading shaft at the other side of the loading gear, so that after the loading gear is displaced, the first adjustment sleeve and the second adjustment sleeve clamp and limit the axial displacement of the loading gear.

4. The load loading mechanism for gear transmission experiment according to claim 3 is characterized in that: The load loading mechanism further includes a first support seat and a first locking nut, the loading shaft is rotatably disposed on the first support seat, and the ends of the loading shaft located on both sides of the first support seat are respectively a load input end and a load output end; The second adjustment sleeve, the loading gear, the first adjustment sleeve and the first locking nut are sequentially arranged on the load output end of the loading shaft, so that after the first adjustment sleeve and the second adjustment sleeve clamp the loading gear, the first locking nut and the first support seat lock and limit the axial displacement of the loading gear.

5. The load loading mechanism for gear transmission experiment according to claim 4, characterized in that: The first support seat is provided with a first positioning hole corresponding to the loading shaft, a first bearing is provided in the first positioning hole, and the loading shaft is rotatably connected to the first support seat through the first bearing; A first limiting protrusion is formed on the loading shaft, and the first bearing is located between the second adjusting sleeve and the first limiting protrusion, so that after the first locking nut is locked, the second adjusting sleeve and the first limiting protrusion limit the axial displacement of the loading shaft.

6. The load loading mechanism for gear transmission experiment according to claim 5, characterized in that: Two opposite first bearings are arranged in the first positioning hole, and a first positioning sleeve sleeved on the loading shaft is arranged between the two first bearings, so that the first positioning sleeve cooperates with the two first bearings to center and position the loading shaft.

7. The load loading mechanism for gear transmission experiment according to any one of claims 4 to 6, characterized in that: The load loading mechanism further includes a second support seat and a second locking nut, the loading shaft is rotatably disposed on the second support seat, and the first support seat and the second support seat are located between the load input end and the load output end of the loading shaft; A second limiting protrusion is formed on the loading shaft on one side of the second support seat, and the second locking nut is located on the other side of the second support seat and is arranged on the loading shaft, so that after the second locking nut is locked, the second locking nut and the second limiting protrusion lock and limit the axial displacement of the loading shaft.

8. The load loading mechanism for gear transmission experiment according to claim 7, characterized in that: The second support seat is provided with a second positioning hole corresponding to the loading shaft, and two opposite second bearings are provided in the second positioning hole. The loading shaft is rotatably connected to the second support seat through the second bearing, and a second positioning sleeve sleeved on the loading shaft is provided between the two second bearings, so that the second positioning sleeve cooperates with the two second bearings to center the loading shaft.

9. A testing device, according to the load loading mechanism of the gear transmission experiment according to any one of claims 1 to 8, characterized in that: The testing device comprises a test box, a test shaft and a load loading mechanism arranged in the test box, and a test driving device and a load driving device located outside the test box; The test shaft is provided with an assembly section for pre-installing the test gear, so that after the test gear is installed on the assembly section of the test shaft, the loading gear is axially displaced along the meshing section to mesh with the test gear; The output end of the test drive device is connected to the test shaft, so that after the test gear and the loading gear are meshed, the test drive device drives the test shaft to drive the test gear to rotate for transmission; The output end of the load driving device is connected to the loading shaft, so that after the test gear rotates, the load driving device drives the loading shaft to drive the loading gear to rotate in the opposite direction to load the load.

10. The testing device according to claim 9, characterized in that: The inspection device also includes a sensor module arranged on one or more components of the loading shaft, the loading gear, the test shaft and the test gear, so that the sensor module collects transmission data of the test gear.

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