Lubrication experiment device and method for steering front axle assembly of light truck

Abstract

The invention relates to the technical field of automobile lubrication experiment engineering, and discloses a light truck steering front axle assembly lubrication experiment device and an experiment method.The light truck steering front axle assembly lubrication experiment device comprises a test platform and a data acquisition system, the upper portion of the test platform is connected with a front axle assembly driving device through bolts, and the upper portion of the test platform is provided with a locking clamping seat; an elastic supporting assembly is installed between the locking clamping base and the testing platform, a rotating mechanism is arranged at the bottom of the testing platform and comprises a supporting base, a rotating bearing column is rotationally connected to the middle of the supporting base, a driven bevel gear is fixedly connected to the outer portion of the lower end of the rotating bearing column, and a gear motor is fixedly connected to the upper portion of the supporting base; a driving bevel gear is fixedly connected outside a driving shaft of the gear motor, and a jolt simulation mechanism is arranged below the test platform. By arranging the rotating mechanism and the bumping simulation mechanism, centrifugal force and bumping road conditions during vehicle running can be simulated, so that the lubricating performance of the steering front axle assembly of the light truck can be evaluated more truly.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lubrication experimental engineering, in particular to a light truck steering front axle assembly lubrication experimental device and an experimental method. Background Art

[0002] In the steering front axle assembly of a light truck, the front axle is the bridge connecting the frame and the wheels. It bears the vertical load and lateral load of the vehicle and transmits these loads to the wheels. The steering knuckle is the component connecting the front axle and the wheels. It is connected to the front axle through the kingpin and can rotate around the kingpin to realize the steering function of the vehicle.

[0003] The steering front axle assembly of a light truck needs to be lubricated regularly to ensure its normal operation and extend its service life. By injecting an appropriate amount of lubricating oil into various lubrication points of the steering front axle assembly, such as the wheel hub, steering knuckle, kingpin, etc., the lubricating oil can reduce friction and wear and improve the operating efficiency of the components.

[0004] The traditional light truck steering front axle assembly lubrication test is to install the assembly on the test bench, connect the lubricating grease pump and lubrication interface, inject an appropriate amount of grease to make it evenly distributed, then start the test equipment, gradually increase the speed to observe the grease flow, and use a thermometer and pressure gauge to monitor temperature and pressure changes, and observe whether the assembly is abnormal. Record experimental data such as speed, temperature, pressure, as well as grease flow and usage time. Analyze the lubrication performance based on the experimental data, evaluate the lubrication effect of the assembly at different speeds and loads, and check whether there are signs of wear or damage.

[0005] When the vehicle actually turns, the steering front axle assembly will be affected by centrifugal force, causing uneven distribution of lubricating oil on the surface of the component, affecting the lubrication effect.

[0006] In addition, a moving vehicle will experience various dynamic loads, such as bumps, vibrations and impacts, which will change the relative position and movement state of the steering front axle assembly, thereby affecting the flow and lubrication performance of the lubricating oil.

[0007] Therefore, the existing light truck steering front axle assembly lubrication test device has the following shortcomings:

[0008] 1. The effect of centrifugal force on lubricant distribution is not fully considered: The experimental device may not be able to accurately simulate the centrifugal force when the vehicle turns, resulting in an inaccurate assessment of the uneven distribution of lubricant.

[0009] 2. The dynamic load simulation is not realistic enough: The dynamic load applied in the experiment does not restore the various complex conditions in actual driving, such as bumps and vibrations, which affects the evaluation of lubricant flow and lubrication performance.

[0010] Therefore, we proposed a light truck steering front axle assembly lubrication experimental device and experimental method. Summary of the invention

[0011] The purpose of the present invention is to provide a light truck steering front axle assembly lubrication test device and test method to solve the problems raised in the above background technology that the influence of centrifugal force on lubricating oil distribution is not fully considered and the dynamic load simulation is not realistic enough.

[0012] To achieve the above object, the present invention provides the following technical solutions: a light truck steering front axle assembly lubrication experimental device, comprising a test platform and a data acquisition system, a front axle assembly drive device is installed on the upper part of the test platform, two sets of locking card seats are arranged on the upper part of the test platform, and an elastic support assembly is installed between the locking card seat and the test platform;

[0013] A rotating mechanism is provided at the bottom of the test platform, and the rotating mechanism includes a supporting base, a rotating bearing column is rotatably connected to the middle of the supporting base, the upper end of the rotating bearing column is fixedly connected to the test platform, the lower end of the rotating bearing column is rotatably connected to the inside of the supporting base, the lower end of the rotating bearing column is externally fixedly connected to a driven bevel gear, the upper part of the supporting base is fixedly connected to a reduction motor, the driving shaft of the reduction motor is externally fixedly connected to an active bevel gear, and the active bevel gear is meshed with the driven bevel gear;

[0014] A bump simulation mechanism is provided below the test platform, which is used to generate bumps of different frequencies and amplitudes on the steering front axle assembly of the light truck;

[0015] As a further solution of the present invention: the elastic support assembly includes a damping telescopic rod, the lower end of the damping telescopic rod is fixedly connected to the test platform, and a movable connecting piece is provided between the upper end of the damping telescopic rod and the locking socket.

[0016] As a further solution of the present invention: the bump simulation mechanism includes an annular road disc, the surface of which is provided with uneven protrusions, and the upper surface of the annular road disc contacts the bottom of the power wheel of the light truck steering front axle assembly.

[0017] As a further solution of the present invention: movable connecting parts are symmetrically arranged on both sides of the bottom of the roundabout, support columns are fixedly connected to the upper parts of both sides of the support base, and the upper ends of the support columns are fixedly connected to the bottoms of the movable connecting parts at the bottom of the roundabout; a swing assembly is arranged at the bottom of the roundabout.

[0018] As a further solution of the present invention: the swing assembly includes a toggle block, an eccentric shaft is sleeved inside the toggle block, and the eccentric shaft drives the toggle block to move up and down.

[0019] As a further solution of the present invention: a first rotating support seat is fixedly connected to the upper portion of the support base, a circular gear disk is rotatably connected inside the first rotating support seat, and the eccentric shaft is fixedly connected to a non-axial position inside the circular gear disk.

[0020] As a further solution of the present invention: the second main bevel gear is fixedly connected to the outside of the rotating bearing column, the second rotating support seat is fixedly connected to the upper part of the supporting base, the second rotating support seat is rotatably connected to one side of the second secondary bevel gear, the second main bevel gear is meshed with the second secondary bevel gear, and the second secondary bevel gear is meshed with the circular gear disc;

[0021] As a further solution of the present invention: an oil supply pump is installed inside the support base, the oil inlet of the oil supply pump is connected to the lubricating oil tank, the oil outlet of the oil supply pump is connected to an oil pump pipe, the oil pump pipe passes through the inside of the rotating bearing column, a universal rotary joint is installed in the middle of the test platform, the oil pump pipe is connected to the lower end of the universal rotary joint, and the side of the universal rotary joint is connected to the lubricating oil interface of the light truck steering front axle assembly;

[0022] As a further solution of the present invention: the data acquisition system includes a sensor, a data acquisition card and a computer, and the sensor is installed on the steering front axle assembly.

[0023] The experimental method of the light truck steering front axle assembly lubrication experimental device includes the following steps:

[0024] S1. Install the light truck steering front axle assembly on the test platform, secure it with two sets of locking sockets, and ensure that the elastic support assembly is well connected;

[0025] S2. Start the front axle assembly drive device to drive the light truck steering front axle assembly to rotate, so that it can perform lubrication test in the working state;

[0026] S3. Start the oil supply pump to extract lubricating oil from the lubricating oil tank, deliver it to the universal swivel joint through the pump oil pipe, and then deliver it to the lubricating oil interface of the light truck steering front axle assembly to ensure continuous supply of lubricating oil during the test;

[0027] S4. Start the rotating mechanism, drive the active bevel gear to rotate through the reduction motor, and then drive the driven bevel gear and the rotating bearing column to rotate, so that the test platform rotates and generates centrifugal force;

[0028] S5. At the same time, the bump simulation mechanism is started, and the eccentric shaft drives the toggle block to move up and down, so that the circular road coil swings around the upper end of the support column, simulating the uphill and downhill road conditions of the vehicle, and generating bumps of different frequencies and amplitudes on the steering front axle assembly of the light truck;

[0029] S6. During the experiment, the sensor measures the lubricating oil pressure, flow, temperature and other parameters in real time, as well as the motion state of the steering front axle assembly;

[0030] S7. The data acquisition system collects and records the sensor data in real time and controls the operating parameters of the simulation device;

[0031] S8. Based on experimental data, evaluate the distribution and lubrication performance of lubricating oil under complex working conditions such as centrifugal force, bumps, vibrations, etc.;

[0032] S9. After the experiment is completed, turn off all devices, remove the light truck steering front axle assembly, and analyze and process the experimental data.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention fixes the front axle assembly drive device on the test platform by bolts to achieve detachability and convenient maintenance. The elastic support component simulates the shock absorption system of the light truck, so that the lubrication experiment of the light truck steering front axle assembly is closer to the actual situation. The oil supply pump conveys lubricating oil to the rotating light truck steering front axle assembly to ensure the continuous supply of lubricating oil during the experiment and improve the reliability of the experiment. The front axle assembly drive device is used to make the light truck steering front axle assembly perform a lubrication experiment in a working state, which is closer to the actual use situation and can more accurately evaluate the lubrication effect. The rotating mechanism drives the test platform to rotate, generates centrifugal force, simulates the turning situation of the vehicle while driving, and is helpful to study the influence of centrifugal force on lubrication.

[0035] 2. The bump simulation mechanism of the present invention is used to generate bumps of different frequencies and amplitudes to the steering front axle assembly of a light truck, simulate the vibration and bumps during vehicle driving, and test the lubrication effect of the steering front axle assembly of the light truck during vehicle driving. The annular road disc is swung by the swing component, and the power wheels at both ends of the steering front axle assembly of the light truck rotate on the swinging annular road disc to simulate the uphill and downhill road conditions of the vehicle. The bump vibration is transmitted to the steering front axle assembly of the light truck through the two power wheels. During the experiment, the sensor measures the pressure, flow, temperature and other parameters of the lubricating oil, as well as the movement state of the steering front axle assembly in real time. The data acquisition system collects and records the data of the sensor in real time. According to the experimental data, the distribution and lubrication performance of the lubricating oil under complex working conditions such as centrifugal force, bumps and vibrations are evaluated.

[0036] 3. The present invention extracts lubricating oil from the lubricating oil tank through an oil supply pump, and the lubricating oil is transported to the universal joint through a pump oil pipe. The universal joint transports the lubricating oil to the lubricating oil interface of the light truck steering front axle assembly, ensuring a continuous supply of lubricating oil during the test process, ensuring the accuracy and reliability of the lubrication effect, and the pump oil pipe passes through the inside of the rotating bearing column to avoid entanglement and interference of the oil pipe, thereby improving the stability and reliability of the system. The universal joint can adapt to the rotational movement of the test platform to ensure a smooth supply of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the bottom structure of the bump simulation mechanism of the present invention;

[0039] Figure 3 It is a side structural schematic diagram of the present invention.

[0040] Figure 4 It is a schematic diagram of the upper structure of the test platform of the present invention.

[0041] Figure 5 It is a schematic diagram of the rotating mechanism structure of the present invention.

[0042] In the figure: 1. test platform; 3. front axle assembly drive device; 4. locking card seat; 5. elastic support component; 51. damping telescopic rod; 52. rigid spring; 6. rotating mechanism; 61. support base; 62. rotating bearing column; 63. driven bevel gear; 64. reduction motor; 65. driving bevel gear; 7. bump simulation mechanism; 71. annular road plate; 72. movable connecting part; 73. support column; 74. swing assembly; 741. toggle block; 742. eccentric shaft; 743. first rotating support seat; 744. circular gear plate; 745. second main bevel gear; 746. second rotating support seat; 747. second secondary bevel gear; 11. oil supply pump; 12. lubricating oil tank; 13. universal rotary joint. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1

[0045] See also Figure 1-5The present invention provides a technical solution: a light truck steering front axle assembly lubrication experimental device, including a test platform 1, a data acquisition system, the data acquisition system including a sensor, a data acquisition card and a computer, the sensor is installed on the steering front axle assembly, the sensor is used to measure the pressure, flow, temperature and other parameters of the lubricating oil, and the motion state of the steering front axle assembly; the data acquisition system is used to collect and record the data of the sensor in real time, and control the operating parameters of the simulation device, the upper part of the test platform 1 is connected with a front axle assembly drive device 3 by bolts, the front axle assembly drive device 3 is fixed to the test platform 1 by bolts, and can be disassembled and convenient for maintenance, the front axle assembly drive device 3 is used to drive the light truck steering front axle assembly to rotate, so that the light truck steering front axle assembly performs a lubrication experiment in a working state, and the rotation of the light truck steering front axle assembly is conducive to the rapid and uniform distribution of the lubricating oil;

[0046] A locking card seat 4 is arranged on the upper part of the test platform 1. There are two sets of locking card seats 4 which are symmetrically distributed on both sides of the upper part of the test platform 1. An elastic support assembly 5 is installed between the locking card seat 4 and the test platform 1. The test platform 1 is used for testing and installing the steering front axle assembly of a light truck.

[0047] The locking card seat 4 is divided into an upper and lower card block, and the two card blocks are connected by bolts. The light truck steering front axle assembly is connected to the test platform 1 through two sets of locking card seats 4. An elastic support component 5 is installed between the locking card seat 4 and the test platform 1. The function of the elastic support component 5 is to play an elastic support role for the light truck steering front axle assembly, which can not only connect the light truck steering front axle assembly to the test platform 1, but also allow it to have a certain activity space, so as to facilitate the rotation mechanism 6 and the bump simulation mechanism 7 to simulate the road condition of the light truck steering front axle assembly;

[0048] The elastic support assembly 5 includes a rigid spring 52, a damping telescopic rod 51 and a movable connecting piece 72. The movable connecting piece 72 may be a ball joint, a universal joint or other movable connecting piece 72. The upper end of the damping telescopic rod 51 may be connected to the light truck steering front axle assembly through the ball joint, the universal joint or other movable connecting piece 72 to allow a certain degree of freedom, so as to simulate the shock absorbing system of the light truck, which is conducive to making the light truck steering front axle assembly lubrication experiment closer to the actual situation.

[0049] A rotating mechanism 6 is provided at the bottom of the test platform 1, and the rotating mechanism 6 includes a supporting base 61, a rotating bearing column 62 is rotatably connected to the middle of the supporting base 61, the upper end of the rotating bearing column 62 is fixedly connected to the test platform 1, and the lower end of the rotating bearing column 62 is rotatably connected to the inside of the supporting base 61, and the lower end of the rotating bearing column 62 is externally fixedly connected to a driven bevel gear 63, and a reduction motor 64 is fixedly connected to the upper part of the supporting base 61, and an active bevel gear 65 is externally fixedly connected to the driving shaft of the reduction motor 64, and the active bevel gear 65 is meshed with the driven bevel gear 63;

[0050] The front axle assembly driving device 3 drives the light truck steering front axle assembly to rotate, so that the light truck steering front axle assembly is subjected to a lubrication experiment in a working state. The rotating bearing column 62 is supported and rotated by the support base 61, and the driving bevel gear 65 is driven to rotate by the reduction motor 64, and the driving bevel gear 65 drives the driven bevel gear 63 to rotate. The rotating bearing column 62 is driven to rotate by the driven bevel gear 63. The rotating bearing column 62 drives the upper test platform 1 to rotate, and centrifugal force is generated on the light truck steering front axle assembly. At the same time, the oil supply pump 11 extracts the oil from the lubricating oil tank 12 and delivers it to the universal rotary joint 13 through the pump oil pipe. The lubricating oil is transported to the rotating light truck steering front axle assembly through the universal rotary joint 13 to carry out a lubrication experiment. The oil supply pump 11 transports the lubricating oil to the rotating light truck steering front axle assembly through the pump oil pipe and the universal rotary joint 13 to ensure the continuous supply of lubricating oil during the experiment and improve the reliability of the experiment. The front axle assembly drive device 3 is used to carry out a lubrication experiment on the light truck steering front axle assembly in a working state, which is closer to the actual use situation and can more accurately evaluate the lubrication effect. The rotating mechanism 6 drives the test platform 1 to rotate and generates centrifugal force to simulate the turning situation of the vehicle while driving, which is helpful to study the influence of centrifugal force on lubrication.

[0051] Embodiment 2

[0052] See also Figure 1-5 The present invention provides a technical solution: a light truck steering front axle assembly lubrication experimental device and experimental method. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0053] As a further limitation of the present invention, a bump simulation mechanism 7 is provided below the test platform 1 for generating bumps of different frequencies and amplitudes to the steering front axle assembly of the light truck.

[0054] The bump simulation mechanism 7 includes an annular road plate 71, the surface of which is provided with uneven protrusions. The surface of the annular road plate 71 is a simulated road surface. Power wheels are installed at both ends of the light truck steering front axle assembly. The upper surface of the annular road plate 71 contacts the bottom of the power wheel of the light truck steering front axle assembly, which is used to simulate the vibration and bump of the light truck steering front axle assembly when working on the road surface, and test the lubrication effect of the light truck steering front axle assembly when the vehicle is driving;

[0055] Active connecting pieces 72 are symmetrically arranged on both sides of the bottom of the roundabout 71, and support columns 73 are fixedly connected to the upper parts of both sides of the support base 61, and the upper ends of the support columns 73 are fixedly connected to the bottoms of the active connecting pieces 72 at the bottom of the roundabout 71; the roundabout 71 is supported for rotation by the active connecting pieces 72 at both sides, and a swinging assembly 74 is arranged at the bottom of the roundabout 71, and the roundabout 71 is swung by the swinging assembly 74, and the roundabout 71 swings forward and backward, and the power wheels at both ends of the light truck steering front axle assembly rotate on the swinging roundabout 71, simulating the uphill and downhill road conditions of the vehicle, and transmitting the bump vibration to the light truck steering front axle assembly through the two power wheels;

[0056] The swing assembly 74 includes a toggle block 741 , an eccentric shaft 742 is sleeved inside the toggle block 741 , and the eccentric shaft 742 drives the toggle block 741 to move up and down.

[0057] A first rotating support seat 743 is fixedly connected to the upper portion of the supporting base 61 , a circular toothed disc 744 is rotatably connected inside the first rotating support seat 743 , and the eccentric shaft 742 is fixedly connected to a non-axial position inside the circular toothed disc 744 .

[0058] The second main bevel gear 745 is fixedly connected to the outside of the rotating bearing column 62, and the second rotating support seat 746 is fixedly connected to the upper part of the supporting base 61. The second secondary bevel gear 747 is rotatably connected to one side of the second rotating support seat 746. The second main bevel gear 745 is meshed with the second secondary bevel gear 747, and the second secondary bevel gear 747 is meshed with the circular gear disc 744.

[0059] The second main bevel gear 745 outside the rotating bearing column 62 drives the second sub-bevel gear 747 on the upper part of the support base 61 to rotate, and the second sub-bevel gear 747 meshes with the circular toothed disc 744, so that the circular toothed disc 744 meshes and rotates, and the circular toothed disc 744 drives the eccentric shaft 742 to rotate in a circle. Only a horizontal slide groove is provided inside the toggle block 741, and the eccentric shaft 742 drives the toggle block 741 to move up and down. The two toggle blocks 741 that move up and down drive the annular road plate 71 to swing around the upper end of the support column 73, so as to realize the uphill and downhill control of the vehicle. The experimental results show that when the reduction motor 64 accelerates or decelerates, the rotation speed of the light truck steering front axle assembly will change, and the centrifugal force will also change accordingly. At the same time, the swing frequency of the annular road plate 71 will change, which will cause bumps of different frequencies and amplitudes to the light truck steering front axle assembly. The pressure, flow, temperature and other parameters of the lubricating oil and the motion state of the steering front axle assembly are measured in real time by sensors, and the sensor data are collected and recorded in real time by the data acquisition system. Based on the experimental data, the distribution and lubrication performance of the lubricating oil under complex working conditions such as centrifugal force, bumps and vibrations are evaluated.

[0060] Embodiment 3

[0061] See also Figure 1-5 The present invention provides a technical solution: a light truck steering front axle assembly lubrication experimental device. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0062] As a further limitation of the present invention, an oil supply pump 11 is installed inside the support base 61, the oil inlet of the oil supply pump 11 is connected to the lubricating oil tank 12, the oil outlet of the oil supply pump 11 is connected to an oil pump pipe, the oil pump pipe passes through the interior of the rotating bearing column 62, and a universal rotary joint 13 is installed in the middle of the test platform 1, the oil pump pipe is connected to the lower end of the universal rotary joint 13, and the side of the universal rotary joint 13 is connected to the lubricating oil interface of the light truck steering front axle assembly.

[0063] Lubricating oil is extracted from the lubricating oil tank 12 through the oil supply pump 11, and the lubricating oil is transported to the universal joint 13 through the pump oil pipe. The universal joint 13 transports the lubricating oil to the lubricating oil interface of the light truck steering front axle assembly, ensuring a continuous supply of lubricating oil during the test, ensuring the accuracy and reliability of the lubrication effect, and the pump oil pipe passes through the inside of the rotating bearing column 62 to avoid entanglement and interference of the oil pipe, thereby improving the stability and reliability of the system. The universal joint 13 can adapt to the rotational movement of the test platform 1 to ensure a smooth supply of lubricating oil.

[0064] The experimental method of the light truck steering front axle assembly lubrication experimental device includes the following steps:

[0065] S1. Install the light truck steering front axle assembly on the test platform 1, fix it with two sets of locking bases 4, and ensure that the elastic support assembly 5 is well connected;

[0066] S2. Start the front axle assembly drive device 3, drive the light truck steering front axle assembly to rotate, so that it can perform lubrication experiments in the working state;

[0067] S3. Start the oil supply pump 11, extract the lubricating oil from the lubricating oil tank 12, deliver it to the universal swivel joint 13 through the pump oil pipe, and then deliver it to the lubricating oil interface of the light truck steering front axle assembly to ensure a continuous supply of lubricating oil during the test;

[0068] S4. Start the rotating mechanism 6, drive the active bevel gear 65 to rotate through the reduction motor 64, and then drive the driven bevel gear 63 and the rotating bearing column 62 to rotate, so that the test platform 1 rotates, generating centrifugal force;

[0069] S5. At the same time, the bump simulation mechanism 7 is started, and the toggle block 741 is driven up and down by the eccentric shaft 742, so that the annular road plate 71 swings around the upper end of the support column 73, simulating the uphill and downhill road conditions of the vehicle, and generating bumps of different frequencies and amplitudes on the steering front axle assembly of the light truck;

[0070] S6. During the experiment, the sensor measures the lubricating oil pressure, flow, temperature and other parameters in real time, as well as the motion state of the steering front axle assembly;

[0071] S7. The data acquisition system collects and records the sensor data in real time and controls the operating parameters of the simulation device;

[0072] S8. Based on experimental data, evaluate the distribution and lubrication performance of lubricating oil under complex working conditions such as centrifugal force, bumps, vibrations, etc.;

[0073] S9. After the experiment is completed, turn off all devices, remove the light truck steering front axle assembly, and analyze and process the experimental data.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A light truck steering front axle assembly lubrication experimental device, comprising a test platform (1) and a data acquisition system, wherein a front axle assembly drive device (3) is installed on the upper part of the test platform (1), and the device is characterized in that: A locking base (4) is provided on the upper part of the test platform (1), and an elastic support assembly (5) is installed between the locking base (4) and the test platform (1); A rotating mechanism (6) is provided at the bottom of the test platform (1), and the rotating mechanism (6) comprises a support base (61), a rotating bearing column (62) is rotatably connected to the middle of the support base (61), the upper end of the rotating bearing column (62) is fixedly connected to the test platform (1), the lower end of the rotating bearing column (62) is rotatably connected to the inside of the support base (61), the lower end of the rotating bearing column (62) is externally fixedly connected to a driven bevel gear (63), the upper part of the support base (61) is fixedly connected to a reduction motor (64), the driving shaft of the reduction motor (64) is externally fixedly connected to an active bevel gear (65), and the active bevel gear (65) is meshed with the driven bevel gear (63); A bump simulation mechanism (7) is arranged below the test platform (1) and is used to cause the steering front axle assembly of the light truck to swing.

2. The light truck steering front axle assembly lubrication test device according to claim 1 is characterized in that: The elastic support assembly (5) comprises a damping telescopic rod (51), the lower end of the damping telescopic rod (51) is fixedly connected to the test platform (1), and a movable connecting piece (72) is provided between the upper end of the damping telescopic rod (51) and the locking seat (4).

3. The light truck steering front axle assembly lubrication test device according to claim 1 is characterized by: The bump simulation mechanism (7) comprises an annular road plate (71), the surface of which is provided with uneven protrusions, and power wheels are installed at both ends of the light truck steering front axle assembly, and the upper surface of the annular road plate (71) contacts the bottom of the power wheel of the light truck steering front axle assembly.

4. The light truck steering front axle assembly lubrication test device according to claim 3 is characterized by: The bottom of the annular road plate (71) is symmetrically provided with movable connecting pieces (72); the upper parts of both sides of the support base (61) are fixedly connected with supporting columns (73); the upper ends of the supporting columns (73) are fixedly connected to the bottom of the movable connecting piece (72) at the bottom of the annular road plate (71); and the bottom of the annular road plate (71) is provided with a swinging assembly (74).

5. The light truck steering front axle assembly lubrication test device according to claim 4 is characterized in that: The swing assembly (74) comprises a toggle block (741), an eccentric shaft (742) is sleeved inside the toggle block (741), and the eccentric shaft (742) drives the toggle block (741) to move up and down.

6. The light truck steering front axle assembly lubrication test device according to claim 5 is characterized by: The upper part of the support base (61) is fixedly connected to a first rotating support seat (743), the interior of the first rotating support seat (743) is rotatably connected to a circular toothed disc (744), and the eccentric shaft (742) is fixedly connected to a non-axial position inside the circular toothed disc (744).

7. The light truck steering front axle assembly lubrication test device according to claim 1 is characterized by: The rotating bearing column (62) is fixedly connected to the outside with a second main bevel gear (745), the upper part of the supporting base (61) is fixedly connected to a second rotating support seat (746), one side of the second rotating support seat (746) is rotatably connected to a second secondary bevel gear (747), the second main bevel gear (745) is meshed with the second secondary bevel gear (747), and the second secondary bevel gear (747) is meshed with the toothed disc (744).

8. The light truck steering front axle assembly lubrication test device according to claim 1 is characterized by: An oil supply pump (11) is installed inside the support base (61), the oil inlet of the oil supply pump (11) is connected to a lubricating oil tank (12), the oil outlet of the oil supply pump (11) is connected to an oil pump pipe, and the oil pump pipe passes through the inside of the rotating bearing column (62). A universal swivel joint (13) is installed in the middle of the test platform (1), the oil pump pipe is connected to the lower end of the universal swivel joint (13), and the side of the universal swivel joint (13) is connected to the lubricating oil interface of the light truck steering front axle assembly.

9. The light truck steering front axle assembly lubrication test device according to claim 1 is characterized by: The data acquisition system comprises a sensor, a data acquisition card and a computer, and the sensor is installed on the steering front axle assembly.

10. An experimental method using the light truck steering front axle assembly lubrication experimental device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Install the light truck steering front axle assembly on the test platform (1) and secure it with two sets of locking brackets (4); S2. Start the front axle assembly drive device (3), drive the light truck steering front axle assembly to rotate, so that it can be lubricated in the working state test; S3. Start the oil supply pump (11), extract the lubricating oil from the lubricating oil tank (12), deliver it to the universal swivel joint (13) through the pump oil pipe, and then deliver it to the lubricating oil interface of the light truck steering front axle assembly; S4. Start the rotating mechanism (6), drive the active bevel gear (65) to rotate through the reduction motor (64), and then drive the driven bevel gear (63) and the rotating bearing column (62) to rotate, so that the test platform (1) rotates, generating centrifugal force; S5. At the same time, the bump simulation mechanism (7) is started, and the eccentric shaft (742) drives the toggle block (741) to move up and down, so that the annular road plate (71) swings around the upper end of the support column (73), simulating the uphill and downhill road conditions of the vehicle, and generating bumps of different frequencies and amplitudes on the light truck steering front axle assembly; S6. During the experiment, the sensor measures the lubricating oil pressure, flow, temperature and other parameters in real time, as well as the motion state of the steering front axle assembly; S7. The data acquisition system collects and records the sensor data in real time and controls the operating parameters of the simulation device; S8. Based on experimental data, evaluate the distribution and lubrication performance of lubricating oil under complex working conditions such as centrifugal force, bumps, vibrations, etc.; S9. After the experiment is completed, turn off all devices, remove the light truck steering front axle assembly, and analyze and process the experimental data.

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