Gear pair wind resistance power loss test method, platform and device

Abstract

The invention discloses a gear pair wind resistance power loss test method, platform and device, and relates to the technical field of power loss tests.Oil is injected to a gear pair through an oil injection lubrication control system, and a motor drives a driving wheel to drive a driven wheel to rotate; rotating the rotating speed knob at a preset rotating speed to increase the rotating speed, recording the torque value of the current input torque rotating speed sensor and the torque value of the current output torque rotating speed sensor every time the preset increment rotating speed is increased, and determining the driving wheel transmission power and the driven wheel transmission power on the basis; drawing a power-rotating speed curve graph based on the rotating speed of the motor and the difference value between the driving wheel transmission power and the driven wheel transmission power, and determining the parasitic power of the gear pair based on the curve graph; and correcting the parasitic power of the gear pair to obtain a corrected value of the parasitic power of the gear pair, subtracting the corrected value of the parasitic power of the gear pair from the obtained difference value to obtain a wind resistance power loss value of the gear pair, and rapidly and accurately testing the wind resistance power loss of the gear pair.

Description

Technical Field

[0001] This application relates to the field of power loss testing technology, and in particular to a method, platform and device for testing the wind resistance power loss of a gear pair. Background Technology

[0002] In the high-speed gear system of aero-engines, the rotating components such as gears and shafts agitate the air and oil mist inside the housing, resulting in significant drag power loss. Drag power loss is a load-independent power loss that does not participate in useful work output and is directly converted into heat energy, consuming engine power. The fuel efficiency of aero-engines directly affects range, operating costs, and carbon emissions. Therefore, the optimized design of drag power loss has an important impact on improving the core competitiveness of aero-engines.

[0003] In related technologies, the experimental testing methods for studying gear wind resistance power loss mainly adopt gear reduction treatment, without considering the influence of the power loss of the pump flow due to gear meshing on the wind resistance power loss, nor the influence of the parasitic power loss generated by the unloaded meshing friction of the gear pair and the bearing friction on the wind resistance power loss. At the same time, the influence of the temperature and pressure parameters of the lubricating oil on the gear wind resistance power loss during oil injection lubrication is not considered. Therefore, the existing test methods for gear wind resistance power loss differ greatly from the actual working conditions. Summary of the Invention

[0004] In view of this, this application provides a method, platform and device for testing the wind resistance power loss of gear pairs, in order to solve the problem that the existing test methods for wind resistance power loss of gear pairs differ greatly from the actual working conditions.

[0005] The objective of this application can be achieved through the following technical solutions: The first aspect of this application is to provide a method for testing the wind resistance power loss of a gear pair, applied in a gear pair wind resistance power loss testing platform. The gear pair wind resistance power loss testing platform includes a motor, a measurement system, a gear pair, and an oil injection lubrication control system. The motor includes a speed knob, the measurement system includes an input torque speed sensor and an output torque speed sensor, and the gear pair includes a driving gear and a driven gear. Start the electric motor and the oil injection lubrication control system. The oil injection lubrication control system sprays oil into the gear pair and drives the driving wheel to rotate through the electric motor. Rotate the speed knob at a preset speed to increase the speed. For each preset increment of speed, record the current input torque and the current output torque of the speed sensor. The driving wheel power and driven wheel power are determined based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value, and the speed. Plot a power-speed curve with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The parasitic power of the gear pair is determined based on the power-speed curve. The parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases. The parasitic power of the gear pair is corrected based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain the parasitic power correction value of the gear pair. The difference between the first difference and the parasitic power correction value of the gear pair is determined as the wind resistance power loss value of the gear pair.

[0006] In one optional embodiment, determining the driving wheel power and driven wheel power based on the current input torque-speed sensor torque value, the current output torque-speed sensor torque value, and the rotational speed includes: The driving power of the drive wheel is determined based on the current input torque and speed sensor torque values ​​and speed. The driven wheel transmission power is determined based on the current output torque and speed sensor torque value, the number of teeth on the driving wheel, the number of teeth on the driven wheel, and the speed.

[0007] In one optional embodiment, determining the drive wheel transmission power based on the current input torque and speed sensor torque value and speed includes: Based on the current input torque and speed sensor torque values, the driving wheel power is calculated using the following formula: ; in, Indicates the power of the drive wheel transmission. This indicates the current input torque value from the speed sensor. Indicates rotational speed.

[0008] In one optional embodiment, the driven wheel transmission power is determined based on the current output torque-speed sensor torque value, the number of teeth on the driving wheel, the number of teeth on the driven wheel, and the rotational speed, including: Based on the current output torque and speed sensor torque value, the number of teeth on the driving gear, the number of teeth on the driven gear, and the speed, the driven gear transmission power is calculated using the following formula: ; in, Indicates the power of the driven wheel transmission. This indicates the current output torque value from the speed sensor. Indicates the number of teeth on the driving gear. Indicates the number of teeth on the driven gear. Indicates rotational speed.

[0009] In one optional embodiment, the parasitic power of the gear pair is corrected based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain a corrected value for the parasitic power of the gear pair, including: Based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair, the parasitic power of the gear pair is corrected using the following formula to obtain the corrected value: ; in, This indicates the parasitic power correction value for the gear pair. a The fitting coefficients represent the parasitic power of the gear pair. b The fitting coefficients represent the pitch circle linear velocity of the gear pair. c The fitting coefficient represents the fuel injection temperature. d The fitting coefficient represents the fuel injection pressure. u p Let be the pitch circle linear velocity of the gear pair. t o For fuel injection temperature, q o This refers to the fuel injection pressure.

[0010] The second aspect of this application is to provide a gear pair wind resistance power loss testing platform, including a motor, a transmission shaft system, a gear pair, a gear pair housing, an oil injection lubrication control system, a measurement system, a bench, a control cabinet, and a data processing station. The motor includes a speed knob, the transmission shaft system includes a drive shaft and a driven shaft, the gear pair includes a drive wheel and a driven wheel, the oil injection lubrication control system includes a pressure regulating device, a temperature-controlled oil tank, and a temperature sensor, and the measurement system includes an input torque speed sensor and an output torque speed sensor. The motor and gear pair housing are mounted on a frame. The control cabinet is electrically connected to the motor. The drive shaft and driven shaft are arranged on the frame. The drive shaft is connected to the output end of the motor. The drive wheel is mounted on the drive shaft, and the driven wheel is mounted on the driven shaft. The pressure regulating device is connected to the gear pair housing. The temperature control oil tank and temperature sensor are located in the gear pair housing. The input torque and speed sensor are connected to the drive shaft, and the output torque and speed sensor are connected to the driven shaft. The data processing console is electrically connected to the control cabinet.

[0011] In one alternative embodiment, the drive shaft and the driven shaft are arranged on the test bench according to the gear pair meshing method, and the drive shaft is connected to the output end of the motor via a coupling.

[0012] A third aspect of this application provides a gear pair wind resistance power loss testing device, applied in a gear pair wind resistance power loss testing platform. The gear pair wind resistance power loss testing platform includes a motor, a measurement system, a gear pair, and an oil injection lubrication control system. The motor includes a speed knob, the measurement system includes an input torque speed sensor and an output torque speed sensor, and the gear pair includes a driving gear and a driven gear. The starting module is used to start the electric motor and the oil injection lubrication control system, control the oil injection lubrication control system to inject oil into the gear pair, and drive the driving wheel to rotate the driven wheel through the electric motor. The recording module is used to increase the rotation speed by rotating the speed knob at a preset speed. For each preset increment of speed, it records the current input torque value and the current output torque value of the speed sensor. The first determining module is used to determine the driving wheel power and the driven wheel power based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value and speed. The plotting module is used to plot a power-speed curve with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The second determining module is used to determine the parasitic power of the gear pair based on the power-speed curve, wherein the parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases; The correction module is used to correct the parasitic power of the gear pair based on the injection temperature, injection pressure and pitch circle linear velocity of the gear pair, and obtain the corrected value of the parasitic power of the gear pair. The third determining module is used to determine the difference between the first difference and the gear pair parasitic power correction value as the gear pair wind resistance power loss value.

[0013] A fourth aspect of this application is to provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the method as described in the first aspect.

[0014] The fifth aspect of this application is to provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the method as described in the first aspect.

[0015] Compared with existing technologies, the gear pair wind resistance power loss testing method provided in this application injects oil into the gear pair through an oil injection lubrication control system, and drives the driven wheel to rotate via an electric motor. The rotation speed is increased by rotating a speed knob at a preset speed, and the current input torque and output torque values ​​of the speed sensor are recorded for each preset increment. Based on the current input torque and output torque values ​​and the rotation speed, the power transmission of the driven wheel and the power transmission of the driven wheel are determined. A power-speed curve is plotted with the motor speed as the abscissa and a first difference as the ordinate, where the first difference is the difference between the power transmission of the driven wheel and the power transmission of the driven wheel. The parasitic power of the gear pair is determined based on the power-speed curve. The parasitic power of the gear pair is corrected based on the oil injection temperature, oil injection pressure, and the pitch circle velocity of the gear pair to obtain a corrected parasitic power value. The difference between the determined difference and the corrected parasitic power value is taken as the wind resistance power loss value of the gear pair. Thus, the wind resistance power loss of the gear pair can be tested quickly and accurately. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic flowchart of a gear pair wind resistance power loss test method provided in an embodiment of this application; Figure 2 A schematic diagram of a structural block diagram of a gear pair wind resistance power loss testing platform provided in an embodiment of this application; Figure 3 A structural block diagram of the gear pair wind resistance power loss testing device provided in the embodiments of this application; Figure 4 This is a structural block diagram of an electronic device for implementing a gear pair wind resistance power loss testing method, as provided in an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: Electric motor-1; drive shaft-2; driven shaft-3; drive wheel-4; driven wheel-5; gear pair housing-6; pressure regulating device-7; temperature-controlled oil tank-8; temperature sensor-9; input torque and speed sensor-10; output torque and speed sensor-11; test bench-12; control cabinet-13; oil injection and lubrication control system-14; data processing console-15. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] It should be understood that in the embodiments of this application, "at least one" means one or more, and "more than one" means two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the related objects before and after it are in an "or" relationship. "Contains A, B and / or C" means containing any one, two, or three of A, B, and C.

[0022] It should be understood that in the embodiments of this application, "B corresponding to A", "B corresponding to A", "A corresponds to B", or "B corresponds to A" means that B is associated with A, and B can be determined based on A. Determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0023] To address the technical problems existing in related technologies, this application provides a method, platform, and apparatus for testing the wind resistance power loss of a gear pair.

[0024] The gear pair wind resistance power loss testing method provided in this application can be executed by an electronic device, which can be a terminal or a server. The terminal can be a smartphone, tablet, laptop, or other similar device. The server can be a standalone physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN (Content Delivery Network), and big data and artificial intelligence platforms. It is understood that this application does not limit the specific entity executing the gear pair wind resistance power loss testing method.

[0025] The technical solution of this application will be described in detail below through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments described below are used to explain the technical solution of this application and are not intended to limit actual use.

[0026] To address the technical problems existing in related technologies, embodiments of this application provide a method for testing the wind resistance power loss of a gear pair, such as... Figure 1 As shown, Figure 1 This is a flowchart illustrating a method for testing the wind resistance power loss of a gear pair according to an embodiment of this application. It should be noted that the steps shown may be executed in a different logical order than those shown in the flowchart. The method may include the following steps S101 to S107.

[0027] Step S101: Start the electric motor and the oil injection lubrication control system. The oil injection lubrication control system sprays oil into the gear pair and drives the driven wheel to rotate through the electric motor.

[0028] It should be noted that the gear pair wind resistance power loss test method provided in this application is applied in a gear pair wind resistance power loss test platform, such as... Figure 2 As shown, Figure 2 The gear pair wind resistance power loss test platform provided in this application embodiment includes a motor 1, a transmission shaft system, a gear pair, a gear pair housing 6, an oil injection lubrication control system 14, a measurement system, a bench 12, a control cabinet 13, and a data processing station 15. The motor 1 includes a speed knob, the transmission shaft system includes a drive shaft 2 and a driven shaft 3, the gear pair includes a drive wheel 4 and a driven wheel 5, the oil injection lubrication control system 14 includes a pressure regulating device 7, a temperature-controlled oil tank 8, and a temperature sensor 9, and the measurement system includes an input torque speed sensor 10 and an output torque speed sensor 11. The motor 1 and gear pair housing 6 are mounted on the frame 12. The control cabinet 13 is electrically connected to the motor 1. The drive shaft 2 and driven shaft 3 are arranged on the frame 12. The drive shaft 2 is connected to the output end of the motor 1. The drive wheel 4 is mounted on the drive shaft 2, and the driven wheel 5 is mounted on the driven shaft 3. The pressure regulating device 7 is connected to the gear pair housing 6. The temperature control oil tank 8 and the temperature sensor 9 are set in the gear pair housing 6. The input torque speed sensor 10 is connected to the drive shaft 2, and the output torque speed sensor 11 is connected to the driven shaft 3. The data processing console 15 is electrically connected to the control cabinet 13.

[0029] In one specific embodiment, the drive shaft 2 and the driven shaft 3 are arranged on the frame 12 according to the gear pair meshing method, and the drive shaft 2 is connected to the output end of the motor 1 through a coupling.

[0030] In a more specific embodiment, the gear pair can be a bevel gear, a spur gear, or a helical gear, etc. If the gear pair is a bevel gear, the driving shaft 2 and the driven shaft 3 are arranged vertically on the test stand 12 according to the gear pair meshing method. If the gear pair is a spur gear or a helical gear, the driving shaft 2 and the driven shaft 3 are arranged horizontally on the test stand 12 according to the gear pair meshing method.

[0031] Step S102: Rotate the speed knob at a preset speed to increase the speed. For each preset increment of speed, record the current input torque speed sensor torque value and the current output torque speed sensor torque value.

[0032] In one optional embodiment, the rotational speed can be represented by n, the preset incremental rotational speed can be represented by Δn, and the input torque value from the torque-speed sensor can be... T 1 indicates that the output torque speed sensor torque value is available. T 2 represents.

[0033] It should be noted that both the preset rotational speed and the preset incremental rotational speed can be preset according to the actual situation.

[0034] Step S103: Determine the driving wheel power and driven wheel power based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value, and the speed.

[0035] In one optional embodiment, determining the driving wheel power and driven wheel power based on the current input torque-speed sensor torque value, the current output torque-speed sensor torque value, and the rotational speed includes: The driving power of the drive wheel is determined based on the current input torque and speed sensor torque values ​​and speed. The driven wheel transmission power is determined based on the current output torque and speed sensor torque value, the number of teeth on the driving wheel, the number of teeth on the driven wheel, and the speed.

[0036] In one specific embodiment, determining the drive wheel transmission power based on the current input torque and speed sensor torque value and speed includes: Based on the current input torque and speed sensor torque values, the driving wheel power is calculated using the following formula: ; in, Indicates the power of the drive wheel transmission. This indicates the current input torque value from the speed sensor. Indicates rotational speed.

[0037] In another specific embodiment, the driven wheel transmission power is determined based on the current output torque-speed sensor torque value, the number of teeth on the driving wheel, the number of teeth on the driven wheel, and the speed, including: Based on the current output torque and speed sensor torque value, the number of teeth on the driving gear, the number of teeth on the driven gear, and the speed, the driven gear transmission power is calculated using the following formula: ; in, Indicates the power of the driven wheel transmission. This indicates the current output torque value from the speed sensor. Indicates the number of teeth on the driving gear. Indicates the number of teeth on the driven gear. Indicates rotational speed.

[0038] Step S104: Plot a power-speed curve with the motor speed as the abscissa and the first difference as the ordinate.

[0039] It should be noted that the first difference is the difference between the power of the driving wheel and the power of the driven wheel.

[0040] Step S105: Determine the parasitic power of the gear pair according to the power-speed curve, wherein the parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases.

[0041] It should be noted that the preset speed threshold and preset difference can be preset according to the actual situation, and this application does not limit them.

[0042] Step S106: Correct the parasitic power of the gear pair based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain the parasitic power correction value of the gear pair.

[0043] In one optional embodiment, the parasitic power of the gear pair is corrected based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain a corrected value for the parasitic power of the gear pair, including: Based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair, the parasitic power of the gear pair is corrected using the following formula to obtain the corrected value: ; in, This indicates the parasitic power correction value for the gear pair. a The fitting coefficients represent the parasitic power of the gear pair. b The fitting coefficients represent the pitch circle linear velocity of the gear pair. c The fitting coefficient represents the fuel injection temperature. d The fitting coefficient represents the fuel injection pressure. u p Let be the pitch circle linear velocity of the gear pair. t o For fuel injection temperature, q o This refers to the fuel injection pressure.

[0044] In one specific embodiment, the pitch circle velocity of the gear pair is calculated based on the rotational speed of the drive shaft.

[0045] In another alternative embodiment, the injection pressure is adjusted by rotating the pressure adjustment knob of the pressure adjustment device, the current injection temperature is obtained by the temperature sensor, and the injection temperature is adjusted by the oil heater in the temperature-controlled oil tank.

[0046] In another alternative embodiment, the control cabinet is used to send control commands to each device in the platform to control each device, and the data processing station is used to process the data generated during the test.

[0047] Step S107: Determine the difference between the first difference and the parasitic power correction value of the gear pair as the wind resistance power loss value of the gear pair.

[0048] In one optional embodiment, the wind resistance power loss value of the gear pair is calculated using the following formula: P qg = Δ PP fe ； in, P qg Δ represents the wind resistance power loss value of the gear pair. P Indicates the first difference. This indicates the parasitic power correction value for the gear pair.

[0049] The gear pair wind resistance power loss test method provided in this application embodiment involves starting the motor and the oil injection lubrication control system, injecting oil into the gear pair through the oil injection lubrication control system, and driving the driven wheel to rotate through the motor. The rotation speed is increased by rotating a speed knob at a preset speed, and the current input torque and output torque values ​​of the speed sensor are recorded for each preset increment. Based on the current input torque and output torque values ​​and the rotation speed, the power of the driven wheel and the power of the driven wheel are determined. A power-speed curve is plotted with the motor speed as the abscissa and the difference between the power of the driven wheel and the power of the driven wheel as the ordinate. The parasitic power of the gear pair is determined based on the power-speed curve. The parasitic power of the gear pair is corrected based on the oil injection temperature, oil injection pressure, and the pitch circle velocity of the gear pair to obtain a corrected value. The difference between the obtained difference and the corrected value is used to obtain the wind resistance power loss value of the gear pair.

[0050] In this embodiment, the gears are not reduced in size, and the influence of meshing friction loss of the gear pair, friction loss of the transmission shaft and bearings on wind resistance power loss is fully considered. By introducing parasitic power loss correction for wind resistance power loss, the influence mechanism of oil injection lubrication parameters on wind resistance power loss is revealed, and the optimization design of oil injection lubrication parameters is supported. The wind resistance power test method proposed in this application is applicable to various gear transmission systems such as cylindrical gears, helical gears, and bevel gears, and has a wide range of applications. This test method can provide experimental support for the low wind resistance loss optimization design of high-speed gearboxes.

[0051] Corresponding to the gear pair wind resistance power loss testing method provided in the embodiments of this application, the embodiments of this application also provide a gear pair wind resistance power loss testing device, applied in a gear pair wind resistance power loss testing platform. The gear pair wind resistance power loss testing platform includes a motor, a measurement system, a gear pair, and an oil injection lubrication control system. The motor includes a speed knob, the measurement system includes an input torque speed sensor and an output torque speed sensor, and the gear pair includes a driving gear and a driven gear, such as... Figure 3 As shown, the gear pair wind resistance power loss testing device includes: The starting module 301 is used to start the electric motor and the oil injection lubrication control system, control the oil injection lubrication control system to inject oil into the gear pair, and drive the driving wheel to rotate the driven wheel through the electric motor. The recording module 302 is used to increase the rotation speed by rotating the speed knob at a preset rotation speed. For each preset increment of rotation speed, the current input torque speed sensor torque value and the current output torque speed sensor torque value are recorded. The first determining module 303 is used to determine the driving wheel power and the driven wheel power based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value and speed. The plotting module 304 is used to plot a power-speed curve with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The second determining module 305 is used to determine the parasitic power of the gear pair according to the power-speed curve, wherein the parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases. The correction module 306 is used to correct the parasitic power of the gear pair based on the injection temperature, injection pressure and pitch circle linear velocity of the gear pair, and obtain the corrected value of the parasitic power of the gear pair. The third determining module 307 is used to determine the difference between the first difference and the gear pair parasitic power correction value as the gear pair wind resistance power loss value.

[0052] Corresponding to the gear pair drag power loss test method provided in the embodiments of this application, the embodiments of this application also provide an electronic device for performing the gear pair drag power loss test method, such as... Figure 4 As shown, the electronic device includes: a processor 401; and a memory 402 for storing a program for testing the wind resistance power loss of a gear pair. After the device is powered on and the program for testing the wind resistance power loss of a gear pair is run by the processor, the following steps are performed: Start the electric motor and the oil injection lubrication control system. The oil injection lubrication control system sprays oil into the gear pair and drives the driving wheel to rotate through the electric motor. The rotation speed is increased by rotating the speed knob at a preset speed. Each time the speed is increased by a preset increment, the current input torque speed sensor torque value and the current output torque speed sensor torque value are recorded. The driving wheel power and driven wheel power are determined based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value, and the speed. Plot a power-speed curve with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The parasitic power of the gear pair is determined based on the power-speed curve. The parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases. The parasitic power of the gear pair is corrected based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain the parasitic power correction value of the gear pair. The difference between the first difference and the parasitic power correction value of the gear pair is determined as the wind resistance power loss value of the gear pair.

[0053] Corresponding to the gear pair wind resistance power loss test method provided in the embodiments of this application, the embodiments of this application also provide a computer-readable storage medium storing a program for the gear pair wind resistance power loss test method, which is executed by a processor to perform the following steps: Start the electric motor and the oil injection lubrication control system. The oil injection lubrication control system sprays oil into the gear pair and drives the driving wheel to rotate through the electric motor. Rotate the speed knob at a preset speed to increase the speed. For each preset increment of speed, record the current input torque and the current output torque of the speed sensor. The driving wheel power and driven wheel power are determined based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value, and the speed. Plot a power-speed curve with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The parasitic power of the gear pair is determined based on the power-speed curve. The parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases. The parasitic power of the gear pair is corrected based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain the parasitic power correction value of the gear pair. The difference between the first difference and the parasitic power correction value of the gear pair is determined as the wind resistance power loss value of the gear pair.

[0054] Corresponding to the gear pair wind resistance power loss testing method provided in the embodiments of this application, the embodiments of this application also provide a computer program containing instructions, which, when executed by a computer, cause the computer to perform the following steps: Start the electric motor and the oil injection lubrication control system. The oil injection lubrication control system sprays oil into the gear pair and drives the driving wheel to rotate through the electric motor. Rotate the speed knob at a preset speed to increase the speed. For each preset increment of speed, record the current input torque and the current output torque of the speed sensor. The driving wheel power and driven wheel power are determined based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value, and the speed. Plot a power-speed curve with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The parasitic power of the gear pair is determined based on the power-speed curve. The parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases. The parasitic power of the gear pair is corrected based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain the parasitic power correction value of the gear pair. The difference between the first difference and the parasitic power correction value of the gear pair is determined as the wind resistance power loss value of the gear pair.

[0055] It should be noted that for a detailed description of the gear pair wind resistance power loss testing system, device, electronic equipment, computer-readable storage medium and computer program product provided in the embodiments of this application, please refer to the relevant description of the gear pair wind resistance power loss testing method embodiments provided in the embodiments of this application, and will not be repeated here.

[0056] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

[0057] In a typical configuration, an electronic device includes one or more processors (Central Processing Units), input / output interfaces, network interfaces, and memory.

[0058] Memory may include non-persistent storage in computer-readable media, such as random access memory and / or non-volatile memory, like read-only memory or flash memory. Memory is an example of computer-readable media.

[0059] Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can store information using any method or technology. Information can be computer-readable operations, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory, static random access memory, dynamic random access memory, other types of random access memory, read-only memory, electrically erasable programmable read-only memory, flash memory or other memory technologies, compact disc read-only memory, digital video disc or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include non-transitory computer-readable media, such as modulated data signals and carrier waves.

[0060] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, compact disc read-only memory, optical storage, etc.) containing computer-usable program code.

[0061] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A method for testing the wind resistance power loss of a gear pair, characterized in that, This invention relates to a gear pair wind resistance power loss testing platform, which includes a motor, a measurement system, a gear pair, and an oil injection lubrication control system. The motor includes a speed knob, the measurement system includes an input torque speed sensor and an output torque speed sensor, and the gear pair includes a driving gear and a driven gear. Start the electric motor and the oil injection lubrication control system, inject oil into the gear pair through the oil injection lubrication control system, and drive the driving wheel to rotate the driven wheel through the electric motor; Rotate the speed knob at a preset speed to increase the speed. For each preset increment of speed, record the current input torque speed sensor torque value and the current output torque speed sensor torque value. The driving wheel power and driven wheel power are determined based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value, and the speed. A power-speed curve is plotted with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The parasitic power of the gear pair is determined according to the power-speed curve, wherein the parasitic power of the gear pair is the first difference value that is lower than the preset difference threshold when the speed is lower than the preset speed threshold and remains unchanged as the speed increases; The parasitic power of the gear pair is corrected based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain the parasitic power correction value of the gear pair. The difference between the first difference and the parasitic power correction value of the gear pair is determined as the wind resistance power loss value of the gear pair.

2. The method for testing the wind resistance power loss of a gear pair according to claim 1, characterized in that, The step of determining the driving wheel power and driven wheel power based on the current input torque and speed sensor torque value, the current output torque and speed sensor torque value, and the speed includes: The driving power of the drive wheel is determined based on the current input torque and speed sensor torque value and speed. The driven wheel transmission power is determined based on the current output torque and speed sensor torque value, the number of teeth on the driving wheel, the number of teeth on the driven wheel, and the speed.

3. The method for testing the wind resistance power loss of a gear pair according to claim 2, characterized in that, The step of determining the drive wheel power based on the current input torque and speed sensor torque value and speed includes: Based on the current input torque and speed sensor torque value and speed, the drive wheel power is calculated using the following formula: ； in, Indicates the power of the drive wheel transmission. This indicates the current input torque value from the speed sensor. Indicates rotational speed.

4. The method for testing the wind resistance power loss of a gear pair according to claim 2, characterized in that, The step of determining the driven wheel transmission power based on the current output torque and speed sensor torque value, the number of teeth on the driving wheel, the number of teeth on the driven wheel, and the speed includes: Based on the current output torque and speed sensor torque value, the number of teeth on the driving wheel, the number of teeth on the driven wheel, and the speed, the driven wheel transmission power is calculated using the following formula: ； in, Indicates the power of the driven wheel transmission. This indicates the current output torque value from the speed sensor. Indicates the number of teeth on the driving gear. Indicates the number of teeth on the driven gear. Indicates rotational speed.

5. The method for testing the wind resistance power loss of a gear pair according to claim 1, characterized in that, The step of correcting the parasitic power of the gear pair based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair to obtain the parasitic power correction value includes: Based on the injection temperature, injection pressure, and pitch circle velocity of the gear pair, the parasitic power of the gear pair is corrected using the following formula to obtain the corrected value: ； in, This indicates the parasitic power correction value for the gear pair. a The fitting coefficients represent the parasitic power of the gear pair. b The fitting coefficients represent the pitch circle linear velocity of the gear pair. c The fitting coefficient represents the fuel injection temperature. d The fitting coefficient represents the fuel injection pressure. u p Let be the pitch circle linear velocity of the gear pair. t o This refers to the fuel injection temperature. q o This refers to the fuel injection pressure.

6. A gear pair wind resistance power loss testing platform, characterized in that, The system includes an electric motor (1), a transmission shaft system, a gear pair, a gear pair housing (6), an oil injection lubrication control system (14), a measuring system, a test bench (12), a control cabinet (13), and a data processing console (15). The electric motor (1) includes a speed knob, the transmission shaft system includes a drive shaft (2) and a driven shaft (3), the gear pair includes a drive gear (4) and a driven gear (5), the oil injection lubrication control system (14) includes a pressure regulating device (7), a temperature-controlled oil tank (8), and a temperature sensor (9), and the measuring system includes an input torque speed sensor (10) and an output torque speed sensor (11). The motor (1) and gear pair housing (6) are mounted on the frame (12). The control cabinet (13) is electrically connected to the motor (1). The drive shaft (2) and the driven shaft (3) are arranged on the frame (12). The drive shaft (2) is connected to the output end of the motor (1). The drive wheel (4) is mounted on the drive shaft (2). The driven wheel (5) is mounted on the driven shaft (3). The pressure regulating device (7) is connected to the gear pair housing (6). The temperature control oil tank (8) and the temperature sensor (9) are set in the gear pair housing (6). The input torque speed sensor (10) is connected to the drive shaft (2). The output torque speed sensor (11) is connected to the driven shaft (3). The data processing console (15) is electrically connected to the control cabinet (13).

7. The gear pair wind resistance power loss testing platform according to claim 6, characterized in that, The drive shaft (2) and driven shaft (3) are arranged on the frame (12) according to the gear pair meshing method. The drive shaft (2) is connected to the output end of the motor (1) through a coupling.

8. A gear pair wind resistance power loss testing device, characterized in that, This invention relates to a gear pair wind resistance power loss testing platform, which includes a motor, a measurement system, a gear pair, and an oil injection lubrication control system. The motor includes a speed knob, the measurement system includes an input torque speed sensor and an output torque speed sensor, and the gear pair includes a driving gear and a driven gear. The starting module is used to start the electric motor and the oil injection lubrication control system, control the oil injection lubrication control system to inject oil into the gear pair, and drive the driving wheel to rotate the driven wheel through the electric motor. The recording module is used to increase the rotation speed by rotating the speed knob at a preset rotation speed, and record the current input torque speed sensor torque value and the current output torque speed sensor torque value for each preset increment of rotation speed. The first determining module is used to determine the driving wheel power and the driven wheel power based on the current input torque speed sensor torque value, the current output torque speed sensor torque value and speed. The plotting module is used to plot a power-speed curve with the motor speed as the horizontal axis and the first difference as the vertical axis. The first difference is the difference between the power of the driving wheel and the power of the driven wheel. The second determining module is used to determine the parasitic power of the gear pair according to the power-speed curve, wherein the parasitic power of the gear pair is a first difference that is lower than a preset difference threshold when the speed is lower than a preset speed threshold and remains unchanged as the speed increases; The correction module is used to correct the parasitic power of the gear pair based on the injection temperature, injection pressure and pitch circle velocity of the gear pair, and obtain the corrected value of the parasitic power of the gear pair. The third determining module is used to determine the difference between the first difference and the gear pair parasitic power correction value as the gear pair wind resistance power loss value.

9. An electronic device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the gear pair wind resistance power loss test method according to any one of claims 1-5.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the gear pair wind resistance power loss test method according to any one of claims 1-5.

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