阅读说明：本技术 一种螺旋锥齿轮搅油损失测试装置及方法 (Spiral bevel gear oil stirring loss testing device and method ) 是由 刘小民 胡帅 宫武旗 孙中国 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种螺旋锥齿轮搅油损失测试装置及方法,通过在齿轮箱体内设置喷油装置,可实现喷油润滑搅油损失测试,同时利用油液入口和油液出口能够实现流动浸油润滑搅油损失测试,大大节省了成本和制作周期,提高了测试效率,在同一个设备中完成两种测试,采用前过油孔板和后挡油板,能够减少齿轮箱侧壁对搅油损失所造成的影响,本发明齿轮箱整体结构、拆卸较为简单,支持多组不同型号的齿轮进行测试,为测试人员提供了最大便利；可以测试不同位置和角度的喷油润滑对齿轮搅油功率损失的影响,并且测试齿轮箱中的油液能够实现循环往复,可以随意改变和保持齿轮箱内部润滑油的温度,适用于不同温度的测试,提高了测试范围。(The invention discloses a spiral bevel gear oil stirring loss testing device and a method, wherein an oil spraying device is arranged in a gear box body, so that oil spraying, lubricating and oil stirring loss testing can be realized, meanwhile, flowing oil soaking, lubricating and oil stirring loss testing can be realized by utilizing an oil inlet and an oil outlet, the cost and the manufacturing period are greatly saved, the testing efficiency is improved, two tests are completed in the same equipment, a front oil passing hole plate and a rear oil baffle plate are adopted, and the influence of the side wall of the gear box on the oil stirring loss can be reduced; the influence of oil injection lubrication at different positions and angles on the power loss of oil stirring of the gear can be tested, the oil in the gear box can be tested in a circulating reciprocating mode, the temperature of lubricating oil in the gear box can be changed and kept at will, the gear box oil stirring testing device is suitable for testing different temperatures, and the testing range is widened.)

1. A spiral bevel gear oil-stirring loss testing device is characterized by comprising a driving motor (3) and a gear box body (7), wherein a driving main shaft (5) and a driven shaft (12) are arranged in the gear box body (7), one end of the driving main shaft (5) is connected with an output shaft of the driving motor (3), the other end of the driving main shaft (5) is fixedly provided with a driving wheel to be tested (16), and the driven shaft (12) is used for mounting a driven wheel to be tested (17) which can be meshed with the driving wheel to be tested (16); an oil inlet (27) and an oil outlet (28) are formed in the side wall of the gear box body (7), a front oil passing hole plate (25) is arranged between the oil inlet (27) and the driving wheel (16) to be tested, a detachable rear oil baffle plate (26) is arranged between the oil outlet (28) and the driven wheel (17) to be tested, an oil spraying device capable of spraying oil to lubricate the driving wheel (16) to be tested and the driven wheel (17) to be tested in the gear box body (7) is arranged in the gear box body (7), and a temperature sensor (11) is arranged in the gear box body (7).

2. The spiral bevel gear oil stirring loss testing device according to claim 1, further comprising a mounting base (1), wherein the gear box body (7) and the driving motor (3) are both fixed on the mounting base (1), and the driving motor (3) is fixed on the mounting base (1) through a mounting bracket (2); an output shaft of the driving motor (3) is connected with the driving main shaft (5) through a coupler (4), and a torque sensor (16) is arranged on the output shaft of the driving motor (3).

3. The spiral bevel gear oil stirring loss testing device according to claim 1, wherein the gear box body (7) comprises an upper box body (9) and a lower box body (10), the driving main shaft (5) and the driven shaft (12) are rotatably connected with the lower box body (10) through bearings, a first bearing (20) is arranged in front of the driving main shaft (5) and the lower box body (10), a driving shaft end cover (13) is arranged on the outer side of the lower box body (10), a second bearing (22) and a third bearing (23) are respectively arranged between two ends of the driven shaft (12) and the lower box body (10), and a first driven shaft end cover (14) and a second driven shaft end cover (15) are respectively arranged on the outer sides of two ends of the driven shaft (12) of the lower box body (10).

4. The helical bevel gear oil stirring loss testing device according to claim 1, wherein a bearing seat (24) is arranged in the gear box body (7), and a fourth bearing (21) is arranged between the driving main shaft (5) and the bearing seat (24).

5. The helical bevel gear oil churning loss testing device according to claim 1, characterized in that the oil injection device comprises an oil injection upright post (36) and a first oil injection nozzle (29) arranged on the oil injection upright post (36), the oil injection upright post (36) is provided with an oil injection nozzle supporting cross rod (34) capable of moving up and down along the oil injection upright post (36), the oil injection nozzle supporting cross rod (34) is provided with an oil injection nozzle support (30), and the first oil injection nozzle (29) is arranged on the oil injection nozzle support (30) through an oil injection nozzle support (31); the first fuel injector (29) is rotatably connected to the injector support (31) via a first fuel injector adapter (32).

6. The helical bevel gear oil stirring loss testing device as claimed in claim 5, wherein the oil nozzle supporting cross rod (34) is connected with the oil injection upright post (36) through a cross rod connector (35), the cross rod connector (35) can slide up and down along the oil injection upright post (36), and the cross rod connector (35) is provided with a locking screw; the side wall of the gear box body (7) is provided with an oil nozzle oil inlet (37), and the oil nozzle oil inlet (37) is connected with the oil nozzle oil inlet (29) through an oil pipe.

7. The helical bevel gear churning loss test device according to claim 1, wherein the oil injection device comprises an oil injection nozzle fan-shaped support (41) and a second oil injection nozzle (43), the oil injection nozzle fan-shaped support (41) is slidably mounted at the upper part in the gear box body (7), and a second oil injection nozzle adapter (42) capable of rotating relative to the oil injection nozzle fan-shaped support (41) is mounted on the oil injection nozzle fan-shaped support (41); the second oil nozzle (43) is connected with the oil nozzle support through the second oil nozzle support (44), an arc sliding groove is formed in the oil nozzle fan-shaped support (41), and one end of the second oil nozzle support (44) penetrates through the arc sliding groove and is locked through a screw.

8. The helical bevel gear churning loss test device according to claim 7, wherein a sliding groove (39) is formed in the upper portion of the gear box body (7), the oil nozzle sector support (41) is slidably disposed in the sliding groove (39) through an oil nozzle sector support (40), and a sliding block capable of sliding relative to the sliding groove (39) is disposed on the oil nozzle sector support (40).

9. A spiral bevel gear oil stirring loss test method based on the spiral bevel gear oil stirring loss test device of claim 1 is characterized by comprising the following steps:

step 1, detecting a torque F1 when a driving main shaft runs at an idle rotation speed of a stable working condition point;

step 2, separately testing a driving wheel torque value F2 and a driven wheel torque value F3 under the idle condition of the driving wheel to be tested and the driven wheel to be tested on the driving spindle;

and 3, mounting the driving wheel to be tested and the driven wheel to be tested in the gear box body, injecting lubricating oil meeting the height into the gear box body, then enabling the driving motor to operate at the rotating speed of each stable working condition point to obtain an operation torque value F4 at the rotating speed of each stable working condition point, and subtracting the driving wheel torque value F2 and the driven wheel torque value F3 from the operation torque value F4 to obtain the gear oil stirring loss at each stable working condition point.

10. A spiral bevel gear oil stirring loss test method based on the spiral bevel gear oil stirring loss test device of claim 1 is characterized by comprising the following steps:

step 1, detecting a torque F1 when a driving main shaft runs at an idle rotation speed of a stable working condition point;

step 2, separately testing a driving wheel torque value F2 and a driven wheel torque value F3 under the idle condition of the driving wheel to be tested and the driven wheel to be tested on the driving spindle;

and 3, mounting the driving wheel to be tested and the driven wheel to be tested in a gear box body, feeding oil into the gear box from an oil injection device, then enabling the driving motor to operate at the rotating speed of each stable working condition point to obtain an operation torque value F4 at the rotating speed of each stable working condition point, and subtracting the driving wheel torque value F2 and the driven wheel torque value F3 from the operation torque value F4 to obtain the gear oil stirring loss at each stable working condition point.

Technical Field

The invention belongs to the field of bevel gear oil stirring loss testing devices, and particularly relates to a spiral bevel gear oil stirring loss testing device and method.

Background

The transmission of the vehicle mostly adopts gear transmission, the transmission efficiency of the gear is more and more concerned, and the oil stirring loss of the gear is one of the big reasons causing the reduction of the transmission efficiency. The gear box that test gear oil stirred that present is mostly for the gear box for the straight-teeth gear, and the structure is comparatively crowded, and the lateral wall is great to stirring oily loss influence, and the inside fluid of gear box can not change when the test, can't carry out immersion oil and the lubricated experiment of oil spout simultaneously, and the function is comparatively single, adopts the unable effectual oil stirring power to spiral bevel gear of gear for the straight-teeth gear to carry out effectual survey at present.

Disclosure of Invention

The invention aims to provide a spiral bevel gear oil stirring loss testing device and method to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a spiral bevel gear oil-stirring loss testing device comprises a driving motor and a gear box body, wherein a driving main shaft and a driven shaft are arranged in the gear box body, one end of the driving main shaft is connected with an output shaft of the driving motor, the other end of the driving main shaft is fixedly provided with a driving wheel to be tested, and the driven shaft is used for mounting a driven wheel to be tested, which can be meshed with the driving wheel to be tested; an oil inlet and an oil outlet are formed in the side wall of the gear box body, a front oil passing hole plate is arranged between the oil inlet and the driven wheel to be tested, a detachable rear oil baffle is arranged between the oil outlet and the driven wheel to be tested, an oil spraying device capable of spraying oil to lubricate the driven wheel to be tested and the driven wheel to be tested in the gear box body is arranged in the gear box body, and a temperature sensor is arranged in the gear box body.

The gearbox is characterized by further comprising a mounting base, wherein the gearbox body and the driving motor are fixed on the mounting base, and the driving motor is fixed on the mounting base through a mounting bracket; an output shaft of the driving motor is connected with the driving main shaft through a coupler, and a torque sensor is arranged on the output shaft of the driving motor.

Furthermore, the gearbox body comprises an upper box body and a lower box body, the driving main shaft and the driven shaft are rotatably connected with the lower box body through bearings, a first bearing is arranged in front of the driving main shaft and the lower box body, a driving shaft end cover is arranged on the outer side of the lower box body, a second bearing and a third bearing are respectively arranged between the two ends of the driven shaft and the lower box body, and a first driven shaft end cover and a second driven shaft end cover are respectively arranged on the outer sides of the two ends of the driven shaft of the lower box body.

Furthermore, a bearing seat is arranged in the gear box body, and a fourth bearing is arranged between the driving main shaft and the bearing seat.

The oil injection device comprises an oil injection upright post and a first oil injection nozzle arranged on the oil injection upright post, wherein the oil injection upright post is provided with an oil injection nozzle supporting cross rod capable of moving up and down along the oil injection upright post; the first oil nozzle is rotatably connected with the oil nozzle support through a first oil nozzle adapter.

Further, the oil nozzle supporting cross rod is connected with the oil injection stand column through a cross rod connector, the cross rod connector can slide up and down along the oil injection stand column, and a locking screw is arranged on the cross rod connector; the lateral wall of gear box is equipped with fuel sprayer fluid entry, and fuel sprayer fluid entry passes through oil pipe with the fuel sprayer fluid entry and is connected.

The oil injection device comprises an oil injection nozzle fan-shaped support and a second oil injection nozzle, wherein the oil injection nozzle fan-shaped support is slidably mounted at the upper part in the gear box body, and a second oil injection nozzle adapter which can rotate relative to the oil injection nozzle fan-shaped support is mounted on the oil injection nozzle fan-shaped support; the second fuel sprayer supports through second fuel sprayer nozzle tip and is connected with the fuel sprayer nozzle tip support, has seted up the circular arc spout on the fuel sprayer fan-shaped support, and the one end that the second fuel sprayer nozzle tip supported passes the circular arc spout and passes through screw locking.

Furthermore, a sliding groove is formed in the upper portion in the gear box body, the oil nozzle fan-shaped support is slidably arranged in the sliding groove through the oil nozzle fan-shaped support, and a sliding block capable of sliding relative to the sliding groove is arranged on the oil nozzle fan-shaped support.

A method for testing the oil stirring loss of a spiral bevel gear comprises the following steps:

step 1, detecting a torque F1 when a driving main shaft runs at an idle rotation speed of a stable working condition point;

step 2, separately testing a driving wheel torque value F2 and a driven wheel torque value F3 under the idle condition of the driving wheel to be tested and the driven wheel to be tested on the driving spindle;

and 3, mounting the driving wheel to be tested and the driven wheel to be tested in the gear box body, injecting lubricating oil meeting the height into the gear box body, then enabling the driving motor to operate at the rotating speed of each stable working condition point to obtain an operation torque value F4 at the rotating speed of each stable working condition point, and subtracting the driving wheel torque value F2 and the driven wheel torque value F3 from the operation torque value F4 to obtain the gear oil stirring loss at each stable working condition point.

A method for testing the oil stirring loss of a spiral bevel gear comprises the following steps:

step 1, detecting a torque F1 when a driving main shaft runs at an idle rotation speed of a stable working condition point;

step 2, separately testing a driving wheel torque value F2 and a driven wheel torque value F3 under the idle condition of the driving wheel to be tested and the driven wheel to be tested on the driving spindle;

and 3, mounting the driving wheel to be tested and the driven wheel to be tested in a gear box body, feeding oil into the gear box from an oil injection device, then enabling the driving motor to operate at the rotating speed of each stable working condition point to obtain an operation torque value F4 at the rotating speed of each stable working condition point, and subtracting the driving wheel torque value F2 and the driven wheel torque value F3 from the operation torque value F4 to obtain the gear oil stirring loss at each stable working condition point.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention relates to a spiral bevel gear oil-stirring loss testing device, which adopts a driving motor and a gear box body, wherein a driving main shaft and a driven shaft are arranged in the gear box body; the side wall of the gear box body is provided with an oil inlet and an oil outlet, a front oil passing hole plate is arranged between the oil inlet and the driving wheel to be tested, a detachable rear oil baffle plate is arranged between the oil outlet and the driven wheel to be tested, an oil spraying device capable of spraying oil to lubricate the driving wheel to be tested and the driven wheel to be tested in the gear box body is arranged in the gear box body, a temperature sensor is arranged in the gear box body, the oil spraying device is arranged in the gear box body, the test of oil spraying, lubricating and stirring loss can be realized, meanwhile, the test of flowing oil soaking, lubricating and stirring loss can be realized by utilizing the oil inlet and the oil outlet, the cost and the manufacturing period are greatly saved, the test efficiency is improved, two tests are completed in the same equipment, the front oil passing hole plate and the rear oil baffle plate are adopted, the influence of the, the testing device supports a plurality of groups of gears with different models to test, and provides the greatest convenience for testers; the influence of oil injection lubrication at different positions and angles on the power loss of oil stirring of the gear can be tested, the oil in the gear box can be tested in a circulating reciprocating mode, the temperature of lubricating oil in the gear box can be changed and kept at will, the gear box oil stirring testing device is suitable for testing different temperatures, and the testing range is widened.

Further, still include the mounting base, ensure that gearbox housing and driving motor are in same benchmark, improved test system's stability.

Furthermore, the gear box body comprises an upper box body and a lower box body, and the gear box is simple in structure and convenient to detach and install.

The oil injection device comprises an oil injection upright post and a first oil injection nozzle arranged on the oil injection upright post, wherein the oil injection upright post is provided with an oil injection nozzle supporting cross rod capable of moving up and down along the oil injection upright post; the first oil nozzle and the oil nozzle support are connected in a rotating mode through the first oil nozzle adapter, the structure is simple, the oil nozzle is applicable to testing of gears of different specifications, installation on the upper portion is adopted, and oil can be guaranteed to be immersed into the gears.

The invention relates to a method for testing the oil-stirring loss of a spiral bevel gear, which adopts the device to detect the torque of a driving main shaft at a stable working condition point and the torque value of a driving wheel and a driven wheel under the idle working conditions of the driving wheel to be tested and the driven wheel to be tested on the driving main shaft in an idle working state, thereby avoiding the influence of a system on the oil-stirring loss of the spiral bevel gear and improving the accuracy of detection;

drawings

Fig. 1 is a schematic view of the overall structure in the embodiment of the present invention.

FIG. 2 is a cross-sectional view of a drive spindle attachment in accordance with an embodiment of the present invention.

FIG. 3 is a view showing the internal structure of the gear housing in the embodiment of the present invention.

FIG. 4 is a schematic view of the upper end mounting structure of the fuel injection apparatus according to the embodiment of the present invention.

FIG. 5 is a schematic view of the lower end mounting structure of the fuel injection device in the embodiment of the present invention.

In the figure: 1. mounting a base; 2. mounting a bracket; 3. a drive motor; 4. a coupling; 5. driving the main shaft; 6. a torque sensor; 7. a gear housing; 8. an end cap; 9. an upper box body; 10. a lower box body; 11. a temperature sensor; 12. a driven shaft; 13. a drive shaft end cap; 14. a first driven shaft end cap; 15. a second driven shaft end cap; 16. a driving wheel to be tested; 17. a driven wheel to be tested; 18. distance sleeves; 19. a main shaft sleeve; 20. a first bearing; 21. a fourth bearing; 22. a second bearing; 23. a third bearing; 24. a bearing seat; 25. the front oil passing hole plate; 26. a rear oil baffle plate; 27. an oil inlet; 28. an oil outlet; 29. a first fuel injection nozzle; 30. an oil nozzle support; 31. supporting an oil nozzle; 32. a first fuel injector adapter; 33. a first fuel injector nozzle support; 34. the fuel injector supports the cross-bar; 35. a cross bar connector; 36. oil spraying vertical columns; 37. an oil inlet of the oil nozzle; 38. an oil nozzle oil inlet hole; 39. a sliding groove; 40. the oil nozzle fan-shaped support is supported; 41. a fuel spray nozzle fan-shaped support; 42. a second fuel injector adapter; 43. a second fuel injection nozzle; 44. the second fuel injector nozzle support.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

the present invention will now be described more fully hereinafter with reference to the accompanying drawings. To avoid unnecessary detail, well-known structures or functions may not be described in detail in the following examples. The examples represent only a part of the present invention and not all examples. Moreover, some quantitative representations used in the following examples may allow some variation in the quantity without changing the basic function.

As shown in fig. 1, a helical bevel gear oil-stirring loss testing device comprises a driving motor 3 and a gear box body 7, wherein a driving main shaft 5 and a driven shaft 12 are arranged in the gear box body 7, one end of the driving main shaft 5 is connected with an output shaft of the driving motor 3, the other end of the driving main shaft 5 is fixedly provided with a driving wheel 16 to be tested, and the driven shaft 12 is provided with a driven wheel 17 to be tested, which can be meshed with the driving wheel 16 to be tested; an oil inlet 27 and an oil outlet 28 are formed in the side wall of the gear box body 7, a front oil passing hole plate 25 is arranged between the oil inlet 27 and the driving wheel 16 to be tested, a detachable rear oil baffle 26 is arranged between the oil outlet 28 and the driven wheel 17 to be tested, the height of the rear oil baffle 26 is lower than the highest liquid level of the tested oil, the height of the oil baffle 26 is higher than the lowest liquid level of the tested oil, the oil inlet 27 is connected to a lubricating oil source, and the oil outlet 28 is connected to an oil storage tank; an oil injection device is arranged in the gear box body 7 and can be used for oil injection lubrication of the driving wheel 16 to be tested and the driven wheel 17 to be tested in the gear box body 7, and a temperature sensor 11 is arranged in the gear box body 7. The front oil passing hole plate 25 is an open hole plate, and the diameter of the front oil passing hole plate 25 is 8 mm.

The gear box body 7 and the driving motor 3 are fixed on the mounting base 1, the gear box body 7 and the driving motor 3 are ensured to be in the same standard, gear box bodies with different specifications and sizes are adopted for gears to be tested with different height specifications, and the driving motor 3 is fixed on the mounting base 1 through the mounting bracket 2; an output shaft of the driving motor 3 is connected with the driving spindle 5 through a coupler 4, a torque sensor 16 is arranged on the output shaft of the driving motor 3, and the torque sensor 16 is arranged between the driving spindle 5 and the coupler 4 or between the output shaft of the driving motor 3 and the coupler 4 and used for acquiring the output torque of the output shaft of the driving motor 3. The gear box body is convenient for the lathe formula gear box shell of dismantling, covers on the gear box body and has seted up the observation hole, and the observation hole goes out to be equipped with end cover 8, and end cover 8 adopts transparent material, is convenient for observe the operation condition in the gear box body.

The gear box body 7 comprises an upper box body 9 and a lower box body 10, a driving main shaft 5 and a driven shaft 12 are rotatably connected with the lower box body 10 through bearings, as shown in fig. 2 and fig. 3, a first bearing 20 is arranged in front of the driving main shaft 5 and the lower box body 10, a driving shaft end cover 13 is arranged on the outer side of the lower box body 10, a second bearing 22 and a third bearing 23 are respectively arranged between the two ends of the driven shaft 12 and the lower box body 10, a first driven shaft end cover 14 and a second driven shaft end cover 15 are respectively arranged on the outer sides of the two ends of the driven shaft 12 of the lower box body 10, the main shaft is convenient to disassemble and assemble, and the main shaft is sealed, so that oil leakage and dust entering.

A bearing seat 24 is arranged in the gear box body 7, and a fourth bearing 21 is arranged between the driving main shaft 5 and the bearing seat 24; the driving main shaft 5 is connected with a driving wheel 16 to be tested through a key; the driven shaft 12 is connected with a driven wheel 17 to be tested through a key. A distance sleeve 18 is arranged between the driven wheel 17 to be tested and the driven shaft 12, and the driven wheel 17 to be tested is prevented from axially moving on the driven shaft 12. A sleeve 19 is sleeved on the driving main shaft 5; as shown in fig. 3, the front oil passing hole plates 25 are arranged on two sides of the bearing seat 24, and oil entering from the oil inlet 27 reaches the gear to be tested through the front oil passing hole plates 25, so that the impact of the oil on the gear to be tested is prevented, and the oil entering stability is improved.

In the application, the driving wheel to be tested 16 and the driven wheel to be tested 17 both adopt spiral bevel gears, and when the bevel gears are tested, the driving main shaft 5 and the driven shaft 12 are vertically arranged; or all adopt straight-toothed gear, this application also can test straight-toothed gear, and when testing straight-toothed gear, driving spindle 5 and driven shaft 12 are installed in parallel.

When testing, the driving motor 3 transmits torque to the driving wheel 16 to be tested and the driven wheel 17 to be tested through the driving main shaft 5, lubricating oil in the gear box body 7 and external lubricating oil are in flow exchange through the oil inlet 27 and the oil outlet 28, and the lubricating oil flows into the gear box body from the oil inlet 27 and flows out from the oil outlet 28. The speed of oil entering and exiting the gear box is greatly reduced due to the obstruction of the front oil hole plate 25 and the rear oil baffle plate 26, and the influence of the speed caused by oil exchange on the accuracy of the gear intersection loss test is reduced; when oil-immersed lubrication is performed, all parts of the apparatus related to oil-injected lubrication are removed in order to keep the inside of the gear box vacant and prevent other parts from affecting the loss of the glue.

The specific steps of the bevel gear to be tested when the power loss of the oil immersion, lubrication and oil stirring is tested are described in detail as follows:

step 1, lubricating oil is not added into a gear box body 7, a driving motor 3 drives a driving main shaft 5 to idle, a gear to be tested is not installed on the driving main shaft 5, and the torque F1 when the driving main shaft 5 runs at the rotating speed of a stable working point is detected; at the moment, the space between the driving main shaft 5 and the gear box body is lubricated only by grease, the driving motor 3 is started to enable the driving motor 3 to run at the rotating speed of a stable working point, the torque value F1 of the torque sensor 6 at the moment is recorded, and the torque value at the moment is the loss caused by the system, namely the loss caused by the structures of a bearing, a seal and the gear box body 7 in the system;

step 2, separately testing a driving wheel torque value F2 and a driven wheel torque value F3 of the driving wheel 16 to be tested and the driven wheel 17 to be tested under the idle condition on the driving spindle 5;

specifically, the driving wheel 16 to be tested is mounted on a driving spindle, no oil is added into the gear box body 7, the driving spindle and the gear box body are lubricated only by grease, the driving motor 3 is started to enable the driving motor 3 to operate at the rotating speed of each stable working condition point, the driving wheel torque value F2 of the torque sensor 6 at the moment is recorded, and the torque at the moment is the driving wheel torque value F2 of the windage loss of the system and the driving wheel 16 to be tested; mounting the driven wheel 17 to be tested on the driving main shaft, and repeating the steps to obtain a system torque value F3 of the driven wheel with the wind resistance loss of the driven wheel 17 to be tested and the system;

and 3, mounting the driving wheel 16 to be tested and the driven wheel 17 to be tested in the gear box body 7, injecting lubricating oil meeting the height into the gear box body 7, then enabling the driving motor 3 to operate at the rotating speed of each stable working condition point to obtain an operation torque value F4 at the rotating speed of each stable working condition point, and obtaining the gear oil stirring loss at each stable working condition point according to the operation torque value F4, the driving wheel torque value F2 and the driven wheel torque value F3.

Specifically, opening the oil inlet 27 allows oil to be fed into the gearbox, closing the gearbox oil outlet 28, when the height of the lubricating oil in the gear box body 7 reaches the height of the working condition point to be tested, the driving motor 3 is started to enable the driving motor 3 to run at the rotating speed of the stable working condition point, simultaneously opening an oil outlet 28 to enable the outside oil and the oil in the gear box to circulate, maintaining the temperature of the lubricating oil at a relatively stable temperature when the gear rotates, changing the oil immersion depth of the driving motor 3 and the gear and the temperature of the lubricating oil, repeating the step 3 until obtaining the loss Fn at each stable working point, subtracting the driving wheel torque value F2 and the driven wheel torque value F3 of the corresponding rotating speed by the Fn, the gear oil stirring loss of each stable working condition point can be obtained, namely, the oil stirring loss rule of the rotating speed, the oil immersion depth and the lubricating oil temperature on the helical bevel gear pair can also be obtained in the oil immersion lubrication mode.

The oil injection device is arranged at the upper part or the lower part in the gear box body 7. As shown in fig. 4, when the oil injection device is disposed at the lower portion of the gear box 7, the oil injection device includes an oil injection column 36 and a first oil injection nozzle 29 disposed on the oil injection column 36, the oil injection column 36 is provided with an oil injection nozzle support cross bar 34 capable of moving up and down along the oil injection column 36, the oil injection nozzle support cross bar 34 is provided with an oil injection nozzle support 30, and the first oil injection nozzle 29 is mounted on the oil injection nozzle support 30 through an oil injection nozzle support 31; the first fuel injector 29 is rotatably connected to the fuel injector support 31 via a first fuel injector adapter 32; the oil nozzle support cross rod 34 is connected with the oil injection stand column 36 through a cross rod connector 35, the cross rod connector 35 can slide up and down along the oil injection stand column 36, and a locking screw is arranged on the cross rod connector 35, so that the height of the cross rod connector 35 on the oil injection stand column 36 can be adjusted. The side wall of the gear box body 7 is provided with an oil nozzle oil inlet 37, and the oil nozzle oil inlet 37 is connected with the oil nozzle oil inlet 29 through an oil pipe; a first oil nozzle support 33 is fixed on the first oil nozzle 29, an arc chute is formed in the oil nozzle support 30, one end of the first oil nozzle support 33 penetrates through the arc chute in the oil nozzle support 30 and is locked through a screw, and the angle of the first oil nozzle 29 is adjusted through the first oil nozzle support 33.

When the oil injection device is arranged on the upper part of the gear box body 7, as shown in fig. 5, the oil injection device comprises an oil injection nozzle fan-shaped support 41 and a second oil injection nozzle 43, the oil injection nozzle fan-shaped support 41 is slidably arranged on the upper part in the gear box body 7, and a second oil injection nozzle adapter 42 capable of rotating relative to the oil injection nozzle fan-shaped support 41 is arranged on the oil injection nozzle fan-shaped support 41; the second oil jet 43 is supported and connected with the oil jet through a second oil jet support 44, an arc chute is formed in the oil jet fan-shaped support 41, one end of the second oil jet support 44 penetrates through the arc chute and is locked through a screw, and the rotation angle of the second oil jet 43 is adjusted through the second oil jet support 44.

Specifically, a sliding groove 39 is formed in the upper portion of the gear box body 7, an oil nozzle fan-shaped support 41 is slidably arranged in the sliding groove 39 through an oil nozzle fan-shaped support 40, a sliding block capable of sliding relative to the sliding groove 39 is arranged on the oil nozzle fan-shaped support 40, and the oil nozzle fan-shaped support 41 is connected with the oil nozzle fan-shaped support 40 through a screw; the end cover 8 is provided with an oil nozzle oil inlet hole 38, and the oil nozzle oil inlet hole 38 is connected with the oil nozzle oil inlet hole through an oil pipe.

The embodiment tests the oil stirring loss rule of the spiral bevel gear in the oil injection lubrication mode:

as can be seen from the above test device, when performing the test, the driving motor 3 transmits the torque to the bevel gear pair through the driving main shaft 5, the lubricating oil in the gear box 7 no longer enters through the oil inlet 27, but is injected into the gear box through the first oil nozzle 29 or the second oil nozzle 43, and flows out from the oil outlet 28 after accumulating a certain height of lubricating oil at the bottom of the gear box, at this time, the front oil passing hole plate 25 and the rear oil baffle plate 26 are no longer used for blocking the oil and are therefore removed. The oil nozzle support cross bar 34 can move up and down on the oil injection upright post 36, and the first oil nozzle 29 is arranged on the fan-shaped support 30 to change the oil injection angle, so that the first oil nozzle can perform oil injection lubrication tests at different horizontal positions, different heights and different injection angles. The injector sector bearing support 40 is horizontally movable in the slide slot 39, while the second injector 43 can also change the injection angle, so that the second injector 43 can perform injection tests at different positions and angles.

The specific steps of the spiral bevel gear when testing the power loss of oil injection, lubrication and oil stirring are described in detail as follows:

step 1: lubricating oil is not added into the gear box body 7, the driving motor 3 drives the driving main shaft 5 to idle, a gear to be tested is not installed on the driving main shaft 5, and the torque F1 when the driving main shaft 5 runs at the rotating speed of a stable working point is detected; at the moment, the space between the driving main shaft 5 and the gear box body is lubricated only by grease, the driving motor 3 is started to enable the driving motor 3 to run at the rotating speed of a stable working point, the torque value F1 of the torque sensor 6 at the moment is recorded, and the torque value at the moment is the loss caused by the system, namely the loss caused by the structures of a bearing, a seal and the gear box body 7 in the system;

step 2: respectively and independently testing a driving wheel torque value F2 and a driven wheel torque value F3 of the driving wheel 16 to be tested and the driven wheel 17 to be tested in the idle state on the driving spindle 5;

specifically, the driving wheel 16 to be tested is mounted on a driving spindle, no oil is added into the gear box body 7, the driving spindle and the gear box body are lubricated only by grease, the driving motor 3 is started to enable the driving motor 3 to operate at the rotating speed of each stable working condition point, the driving wheel torque value F2 of the torque sensor 6 at the moment is recorded, and the torque at the moment is the driving wheel torque value F2 of the windage loss of the system and the driving wheel 16 to be tested; mounting the driven wheel 17 to be tested on the driving main shaft, and repeating the steps to obtain a system torque value F3 of the driven wheel with the wind resistance loss of the driven wheel 17 to be tested and the system;

and step 3: the driving wheel 16 to be tested and the driven wheel 17 to be tested are both arranged in the gear box body 7, oil enters the gear box from an oil injection nozzle, then the driving motor 3 is enabled to operate at the rotating speed of each stable working condition point, the operation torque value F4 at the rotating speed of each stable working condition point is obtained, and the gear oil stirring loss at each stable working condition point can be obtained according to the operation torque value F4, the driving wheel torque value F2 and the driven wheel torque value F3.

Changing the rotation speed of the motor, the position of an oil injection port, the flow of oil injection and the temperature of lubricating oil, repeating the step 3 until loss Fm under each stable working condition point is obtained, and subtracting a driving wheel torque value F2 and a driven wheel torque value F3 of the corresponding rotation speed from Fn to obtain the gear oil stirring loss of each stable working condition point, namely obtaining the oil stirring loss rule of the rotation speed and the position of the oil injection port on the helical bevel gear pair in the oil injection lubrication mode.

The above examples are only for illustrating the concept and the application method of the present invention, and the purpose of the present invention is to make the skilled person understand the present invention, and should not be used to limit the scope of the present invention. All the changes and modifications of the embodiments based on the concept of the present invention are within the scope of the present invention.