Field soil pan based light-duty powertrain suspension bench apparatus and method of use

Abstract

The present application relates to the technical field of agricultural machinery equipment, and discloses a light power chassis suspension rack device based on a field soil groove and a use method, which comprises a walking trolley, a walking beam, a test trolley, a walking track, a hanging device, a suspension rack and a test system unit, the walking trolley comprises a front side part and a rear side part, the walking track is arranged in parallel, the front side part and the rear side part are movably installed on the walking track respectively, the two ends of the walking beam are connected with the front side part and the rear side part respectively, the test trolley is movably installed on the walking beam, the suspension rack is connected with the hanging device through a connecting device, the hanging device is connected with the test trolley, and the test system unit is installed on the suspension rack. The present application realizes modular design, has compact overall structure, can be modified and debugged according to actual requirements in the field, is convenient to install and disassemble, is stable in working state, can clearly explore vibration characteristics and rules, and can measure various data under real field working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery equipment, and in particular to a light power chassis suspension rack device based on a field soil groove and a use method. BACKGROUND

[0002] Rice is one of the important food crops in China, and the annual rice planting area is 30 million hm 2 Therefore, rice planting mechanization has become the mainstream, and the main rice mechanized planting methods in China are mechanical transplanting and mechanical direct seeding, both of which use light power chassis. The light power chassis will slip, sink and tilt during operation, and the driving stability and driving comfort need to be improved. At present, the design and development of domestic light power chassis lack theoretical model calculation, the vibration characteristics and rules are not clear, and the structure is imperfect, which has become an important factor for the slow development of light power chassis key technology, and also restricts the promotion of domestic rice planting machinery. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a light power chassis suspension rack device based on a field soil groove and a use method.

[0004] The purpose of the present application is achieved by the following technical scheme: a light power chassis suspension rack device based on a field soil groove includes a walking trolley, a walking beam, a test trolley, a walking track, a hanging device, a suspension rack and a test system unit, the walking trolley includes a front side and a rear side, the walking track is arranged in parallel, the front side and the rear side are respectively installed on the walking track, the two ends of the walking beam are respectively connected with the front side and the rear side, the test trolley is movably installed on the walking beam, the suspension rack is connected with the hanging device through a connecting device, the hanging device is connected with the test trolley, and the test system unit is respectively installed on the connecting device and the suspension rack.

[0005] More preferably, the connecting device includes a hanging rear seat, a front support, a sliding block, a sliding rail and a plate ear block, the hanging device is connected with one side of the hanging rear seat, the other side of the hanging rear seat is connected with the front support, the sliding rail is installed on the side of the front support away from the hanging rear seat, the sliding block is slidingly connected with the sliding rail, the sliding block is installed on the suspension rack through the plate ear block, and the test system unit is connected with the plate ear block.

[0006] More preferably, the hanging device comprises a test trolley arm, an arch plate, an upper support, a lower support, an upper lifting rod, a hydraulic pump, a connecting seat and a fixing seat, the fixing seat is installed on the test trolley, the test trolley arm is symmetrically installed on the upper end of the fixing seat, the two ends of the arch plate are rotatably connected with the test trolley arm respectively, the arch plate is connected with the upper end of the upper lifting rod, the lower end of the upper lifting rod is rotatably connected with the telescopic end of the hydraulic pump and the lower support respectively, the fixed end of the hydraulic pump and one end of the lower support are rotatably connected with the lower end of the fixing seat, the other end of the lower support is rotatably connected with the lower end of the connecting seat, the upper end of the connecting seat is rotatably connected with one end of the upper support, the other end of the upper support is rotatably connected with the middle part of the fixing seat through the upper lifting rod, and the connecting seat is connected with the connecting device.

[0007] More preferably, the suspension rack comprises a frame structure and a shock absorbing wheel structure, the shock absorbing wheel structure is connected with the connecting device through the frame structure, and the frame structure and the shock absorbing wheel structure are connected with the test system unit.

[0008] More preferably, the frame structure comprises a main frame pipe, an auxiliary frame pipe, a main frame, an auxiliary frame, a large suspension arm, a small suspension arm and a rear axle load bearing support, two adjacent main frame pipes are connected through the auxiliary frame pipe to form a main frame, the main frame is connected with the hanging device, the main frame and the auxiliary frame are installed at the bottom of the main frame, the two ends of the large suspension arm are rotatably connected with the main frame and the rear axle load bearing support respectively, the two ends of the small suspension arm are rotatably connected with the auxiliary frame and the rear axle load bearing support respectively, the rear axle load bearing support and the main frame are connected with the shock absorbing wheel structure, and the main frame is connected with the test system unit.

[0009] More preferably, the shock absorbing wheel structure comprises a plate block, a shock absorber, a shock absorber seat, a square pipe, a bearing seat, a wheel shaft and a driven wheel, the driven wheel is connected with one end of the wheel shaft, the other end of the wheel shaft is rotatably installed on the bearing seat, the bearing seat is installed on the lower end of the square pipe, the upper end of the square pipe is connected with one side of the plate block, the other side of the plate block is connected with the frame structure, the two ends of the shock absorber are rotatably connected with the square pipe and the frame structure through the shock absorber seat respectively, and the bearing seat is connected with the test system unit.

[0010] More preferably, the test system unit comprises a displacement sensor, a displacement sensor signal processing module, a speed sensor, a speed sensor signal processing module, an acceleration sensor, an acceleration sensor signal processing module, a vibration sensor, a vibration sensor signal processing module, a three-axis sensor, a three-axis sensor signal processing module and a master control unit, the displacement sensor is connected with the master control unit through the displacement sensor signal processing module, the speed sensor is connected with the master control unit through the speed sensor signal processing module, the acceleration sensor is connected with the master control unit through the acceleration sensor signal processing module, the vibration sensor is connected with the master control unit through the vibration sensor signal processing module, the three-axis sensor is connected with the master control unit through the three-axis sensor signal processing module, the displacement sensor is installed on the connecting device, and the speed sensor, the acceleration sensor, the vibration sensor and the three-axis sensor are all installed on the suspension bench.

[0011] The method for using the light power chassis suspension bench device based on a field soil groove comprises the following steps:

[0012] S1, start the light power chassis suspension bench device, the walking trolley walks on the walking track, the test trolley walks on the walking beam, the test trolley drives the suspension bench in the field through the hanging device and the connecting device, and the light power chassis suspension bench device is the light power chassis suspension bench device based on a field soil groove;

[0013] S2, when the suspension bench walks in the field, the speed sensor detects the moving speed of the suspension bench in the field, and converts the moving speed into an electric signal and feeds back to the speed sensor signal processing module, and the speed sensor signal processing module converts the electric signal into a digital signal and feeds back to the master control unit;

[0014] S3, when the suspension bench walks in the field and jumps up and down, the displacement sensor detects the jumping displacement of the suspension bench, and converts the jumping displacement into an electric signal and feeds back to the displacement sensor signal processing module, and the displacement sensor signal processing module converts the electric signal into a digital signal and feeds back to the master control unit;

[0015] S4, when the suspension bench walks in the field and vibrates, the vibration sensor detects the vibration frequency, vibration amplitude and vibration direction of the suspension bench walking in the field, and converts the vibration frequency, vibration amplitude and vibration direction into an electric signal and feeds back to the vibration sensor signal processing module, and the vibration sensor signal processing module converts the electric signal into a digital signal and feeds back to the master control unit;

[0016] S5, when the suspension bench goes off track in the field, the three-axis sensor detects the off-track angle of the suspension bench in the field, and converts the off-track angle into an electrical signal and feeds back to the three-axis sensor signal processing module, and the three-axis sensor signal processing module converts the electrical signal into a digital signal and feeds back to the main control unit;

[0017] S6, when the suspension bench jumps in the field, the acceleration sensor detects the jumping acceleration of the suspension bench, and converts the jumping acceleration into an electrical signal and feeds back to the acceleration sensor signal processing module, and the acceleration sensor signal processing module converts the electrical signal into a digital signal and feeds back to the main control unit.

[0018] The present application has the following advantages and beneficial effects compared with the prior art:

[0019] The present application realizes modular design through the walking trolley, the walking beam, the test trolley, the walking track, the hanging device, the suspension bench and the test system unit, the overall structure is compact, can be modified and debugged according to the actual demand in the field, is convenient to install and disassemble, the working state is stable, the vibration characteristics and the law can be clearly explored, various data under the real field working condition can be measured, the technical problems such as skidding, sinking and tilting of the light power chassis during operation can be solved, and the driving stability and driving comfort can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the light power chassis suspension bench device based on the field soil tank of the present application;

[0021] Figure 2 is a schematic diagram of the hanging device of the light power chassis suspension bench device based on the field soil tank of the present application;

[0022] Figure 3 is a schematic diagram of the connecting device of the light power chassis suspension bench device based on the field soil tank of the present application;

[0023] Figure 4 is an assembly schematic diagram of the connecting device and the suspension bench of the light power chassis suspension bench device based on the field soil tank of the present application;

[0024] Figure 5 is an assembly schematic diagram of the suspension bench of the light power chassis suspension bench device based on the field soil tank of the present application;

[0025] Figure 6 is a schematic diagram of the connection of each sensor and the main control unit of the light power chassis suspension bench device based on the field soil tank of the present application;

[0026] The components in the attached diagram are labeled as follows: 101-Traveling trolley; 102-Traveling beam; 103-Test trolley; 104-Traveling track; 105-Hanging device; 106-Suspension frame; 201-Test trolley arm; 202-Bow plate; 203-Upper support; 204-Lower support; 205-Upper lifting fork; 206-Hydraulic pump; 207-Fixed seat; 208-Connecting seat; 301-Connecting device; 302-Hanging rear seat; 303-Front support; 304-Slider; 305-Slide rail; 306-Ear plate; 401-Main frame tube; 402-Secondary frame tube; 403-Main frame; 404 - Subframe; 405- Large cantilever; 406- Small cantilever; 407- Rear axle support bracket; 501- Plate; 502- Shock absorber; 503- Shock absorber mount; 504- Square tube; 505- Bearing mount; 506- Wheel axle; 507- Driven wheel. Detailed Implementation

[0027] The invention's objective will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the implementation of the invention is not limited to the following embodiments.

[0028] like Figure 1 As shown, the lightweight power chassis suspension test platform 106 based on a field trough includes a traveling trolley 101, a traveling beam 102, a test trolley 103, two traveling tracks 104, a coupling device 105, a suspension test platform 106, and a test system unit. The traveling trolley 101 includes a front section and a rear section. The two traveling tracks 104 are arranged in parallel, with the front section of the traveling trolley 101 mounted on one track and the rear section mounted on the other track. The traveling trolley 101 can move left and right on the two tracks 104. The two ends of the traveling beam 102 are connected to the front and rear sections of the traveling trolley 101, respectively. The test trolley 103 is mounted on the traveling beam 102 and can move back and forth. The suspension test bench 106 is connected to the mounting device 105 via the connecting device 301, and the mounting device 105 is connected to the test trolley 103. The test system unit is installed on the suspension test bench 106.

[0029] The walking trolley 101 is used to drive the suspension bench 106 to move left and right on the walking track 104; the walking beam 102 is used to guide the walking of the test trolley 103 and bear the test trolley 103; the test trolley 103 is used to drive the suspension bench 106 to move forward and backward on the walking beam 102; the walking track 104 is used to guide the left and right movement of the walking trolley 101; the hanging device 105 is used to actively adjust the height position of the connecting device 301; the connecting device 301 is used to slide the hanging device 105 and the suspension bench 106, and the suspension bench 106 will not be affected when the height of the hanging device 105 is adjusted. The suspension bench 106 is used to install the test system unit, simulate the driving stability and ride comfort of agricultural machinery under different working conditions; the test system unit is used to collect the motion data of the suspension bench 106.

[0030] As shown in Figure 2 , the hanging device 105 includes two test trolley arms 201, an arch plate 202, an upper support 203, two lower supports 204, an upper lifting fork 205, a hydraulic pump 206, a connecting seat 208 and a fixed seat 207. The fixed seat 207 is installed on the side of the test trolley 103, the two test trolley arms 201 are symmetrically installed on the upper end of the fixed seat 207, and the two ends of the arch plate 202 are rotatably connected with the two test trolley arms 201 respectively. The middle part of the arch plate 202 is connected with the upper end of the upper lifting fork 205, and the lower end of the upper lifting fork 205 is rotatably connected with the telescopic end of the hydraulic pump 206 and the lower support 204 respectively. The fixed end of the hydraulic pump 206 is rotatably connected with the middle part of the lower end of the fixed seat 207. One end of the two lower supports 204 is rotatably connected with the two sides of the lower end of the fixed seat 207 respectively, and the other end of the two lower supports 204 is rotatably connected with the two sides of the lower end of the connecting seat 208 respectively. The upper end of the connecting seat 208 is rotatably connected with one end of the upper support 203, and the other end of the upper support 203 is rotatably connected with the middle part of the fixed seat 207 through the upper lifting fork 205. The connecting seat 208 is connected with the hanging rear seat 302 of the connecting device 301.

[0031] When working, the walking trolley 101 moves left and right on the walking track 104, and the test trolley 103 moves forward and backward on the walking beam 102. If the test trolley 103 and the walking trolley 101 move at the same time, the test trolley 103 moves in two-dimensional coordinates in the field, and the hanging device 105 fixed on the test trolley 103 can also move in two-dimensional coordinates with the test trolley 103; wherein the hydraulic pump 206 in the hanging device 105 can adjust the hydraulic pressure to control the lifting height of the upper lifting fork 205 and the upper support 203 and the lower support 204, and finally control the lifting height of the connecting seat 208.

[0032] As shown in Figure 3As shown, the connecting device 301 comprises a hanging back seat 302, a front support 303, four sliding blocks 304, two sliding rails 305 and two plate lug blocks 306. The connecting seat 208 of the hanging device 105 is connected with one side of the hanging back seat 302, and the other side of the hanging back seat 302 is connected with the front surface of the front support 303. The two sliding rails 305 are installed on the side of the front support 303 away from the hanging back seat 302, that is, the two sliding rails 305 are symmetrically installed on the back of the front support 303. The two sliding rails 305 are in sliding connection with the four sliding blocks 304, that is, each sliding rail 305 is in sliding connection with two sliding blocks 304. The front surface of each plate lug block 306 is connected with two sliding blocks 304, and the two plate lug blocks 306 are installed on the auxiliary frame tube 402 of the suspension rack 106.

[0033] As Figure 4 and 5As shown, the suspension bench 106 includes a frame structure and a shock absorbing wheel structure, the shock absorbing wheel structure is connected with the two plate lug blocks 306 of the connecting device 301 through the frame structure. The frame structure includes two main frame pipes 401, two auxiliary frame pipes 402, a main frame 403, an auxiliary frame 404, two large suspension arms 405, two small suspension arms 406 and a rear axle load bearing support 407. The shock absorbing wheel structure includes a plate block 501, two shock absorbers 502, four shock absorber seats 503, two square tubes 504, two bearing seats 505, two wheel shafts 506 and two driven wheels 507. The two ends of the two main frame pipes 401 are connected to form a main frame through the two auxiliary frame pipes 402 respectively. The main frame (i.e. one auxiliary frame pipe 402) is welded with the two plate lug blocks 306 of the hitching device 105. The main frame 403 is installed at the front end of the bottom of the main frame, and the auxiliary frame 404 is installed at the rear end of the bottom of the main frame. One end of the two large suspension arms 405 is rotatably connected with the two ends of the main frame 403 respectively, and the other end of the two large suspension arms 405 is rotatably connected with the two sides of the front lower end of the rear axle load bearing support 407 respectively. One end of the two small suspension arms 406 is rotatably connected with the two ends of the auxiliary frame 404 respectively, and the other end of the two small suspension arms 406 is rotatably connected with the two sides of the front upper end of the rear axle load bearing support 407 respectively. The back of the rear axle load bearing support 407 is connected with the front of the plate block 501, the back of the plate block 501 is welded with the two square tubes 504, and the two square tubes 504 are parallel to each other. The two shock absorber seats 503 are installed at the bottom of the rear end of the two main frame pipes 401 of the main frame. The upper end of the two shock absorbers 502 is rotatably connected with the two shock absorber seats 503 through a pin, and the lower end of the two shock absorbers 502 is rotatably connected with the other two shock absorber seats 503 through a pin, and the two shock absorber seats 503 are fixedly connected with the two square tubes 504 through bolts. The lower end of the two square tubes 504 is connected with the two bearing seats 505 respectively, one end of the two wheel shafts 506 is installed on the two bearing seats 505 respectively, and the two wheel shafts 506 rotate relative to the two bearing seats 505. The other end of the two wheel shafts 506 is connected with the two driven wheels 507 respectively.

[0034] The plate lug block 306 of the connecting device 301 is fixedly connected with the auxiliary frame of the suspension bench 106, and the hitching rear seat 302 of the connecting device 301 is connected with the connecting seat 208 of the hitching device 105. When the suspension bench 106 device of the light power chassis based on the field soil groove is working in the field, the suspension bench 106 will jump with the driven wheels 507 due to the road excitation in the field, and the jump of the driven wheels 507 will be transmitted to the square tubes 504, and then to the shock absorbers 502, and the shock absorbers 502 will absorb the shock of the driven wheels 507; but the suspension bench 106 will still jump, that is, the suspension bench 106 also slides up and down relative to the connecting device 301.

[0035] As Figure 6As shown, the test system unit includes a displacement sensor, a displacement sensor signal processing module, a speed sensor, a speed sensor signal processing module, an acceleration sensor, an acceleration sensor signal processing module, a vibration sensor, a vibration sensor signal processing module, a three-axis sensor, a three-axis sensor signal processing module, and a main control unit. The displacement sensor is connected to the main control unit through the displacement sensor signal processing module. The speed sensor is connected to the main control unit through the speed sensor signal processing module. The acceleration sensor is connected to the main control unit through the acceleration sensor signal processing module. The vibration sensor is connected to the main control unit through the vibration sensor signal processing module. The three-axis sensor is connected to the main control unit through the three-axis sensor signal processing module. The displacement sensor is installed on the plate lug block 306 of the connecting device 301. The speed sensor is installed on the main frame pipe 401 of the suspension bench 106. The acceleration sensor is installed on the bearing seat 505 of the suspension bench 106. The vibration sensor is installed on the bearing seat 505 of the suspension bench 106. The three-axis sensor is installed on the auxiliary frame pipe 402 of the suspension bench 106.

[0036] The displacement sensor is used to detect the up-and-down bounce distance of the suspension bench 106. The displacement sensor signal processing module is used to convert the electrical signal of the displacement sensor into a digital signal. The speed sensor is used to detect the moving speed of the suspension bench 106 in the field. The speed sensor signal processing module can be purchased in the existing market to convert the electrical signal of the speed sensor into a digital signal. The acceleration sensor is used to detect the acceleration of the suspension bench 106 bounce. The acceleration sensor signal processing module can be purchased in the existing market to convert the electrical signal of the acceleration sensor into a digital signal. The vibration sensor is used to detect the vibration frequency of the suspension bench 106 when walking. The vibration sensor signal processing module can be purchased in the existing market to convert the electrical signal of the vibration sensor into a digital signal. The three-axis sensor is used to detect the deflection angle of the suspension bench 106 when walking. The three-axis sensor signal processing module can be purchased in the existing market to convert the electrical signal of the three-axis sensor into a digital signal. The main control unit is a single-chip microcomputer, which is used to process all digital signals.

[0037] The use method of the light power chassis suspension bench 106 device based on the field soil tank includes the following steps:

[0038] S1, start the light power chassis suspension bench 106 device based on the field soil tank, the walking trolley 101 walks on the walking track 104, the test trolley 103 walks on the walking beam 102, and the test trolley 103 drives the suspension bench 106 to walk in the field through the hanging device 105 and the connecting device 301;

[0039] S2, when the suspension bench 106 walks in the field, the speed sensor detects the moving speed of the suspension bench 106 in the field, and converts the moving speed into an electric signal and feeds back to the speed sensor signal processing module, and the speed sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit;

[0040] S3, when the suspension bench 106 walks up and down in the field, the displacement sensor detects the jumping displacement of the suspension bench 106, and converts the jumping displacement into an electric signal and feeds back to the displacement sensor signal processing module, and the displacement sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit;

[0041] S4, when the suspension bench 106 walks in the field, the vibration sensor detects the vibration frequency, vibration amplitude and vibration direction of the suspension bench 106 walking in the field, and converts the vibration frequency, vibration amplitude and vibration direction into an electric signal and feeds back to the vibration sensor signal processing module, and the vibration sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit;

[0042] S5, when the suspension bench 106 walks in the field, the three-axis sensor detects the offset angle of the suspension bench 106 walking in the field, and converts the offset angle into an electric signal and feeds back to the three-axis sensor signal processing module, and the three-axis sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit;

[0043] S6, when the suspension bench 106 walks in the field, the acceleration sensor detects the jumping acceleration of the suspension bench 106 walking in the field, and converts the jumping acceleration into an electric signal and feeds back to the acceleration sensor signal processing module, and the acceleration sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit.

[0044] In summary, the present application provides a research device and method for the current agricultural light power chassis suspension in China, and the light power chassis suspension bench device based on the field soil tank provides real field road excitation and road surface with different water contents during the experiment, combined with the suspension bench and the corresponding sensor, which can help researchers better understand the performance characteristics of the agricultural light power chassis and the suspension system, predict and evaluate the driving stability and ride comfort of agricultural machinery under different working conditions, and provide an important basis for performance optimization and improvement of agricultural machinery.

[0045] The above specific embodiments are preferred embodiments of the present application, and cannot limit the present application, and any changes or other equivalent replacement methods without departing from the technical solutions of the present application are included in the protection scope of the present application.

Claims

1. A field-plot based light-duty powertrain suspension bench rig apparatus, characterized by: The device comprises a walking trolley, a walking beam, a test trolley, a walking track, a hanging device, a suspension rack and a test system unit, the walking trolley comprises a front side part and a rear side part, the walking track is arranged in parallel, the front side part and the rear side part are respectively installed on the walking track, the walking beam is connected with the front side part and the rear side part at two ends, the test trolley is movably installed on the walking beam, the suspension rack is connected with the hanging device through a connecting device, the hanging device is connected with the test trolley, and the test system unit is respectively installed on the connecting device and the suspension rack. The connecting device comprises a hanging rear seat, a front support, a sliding block, a sliding rail and a plate lug, one side of the hanging device is connected with the hanging rear seat, the other side of the hanging rear seat is connected with the front support, the sliding rail is installed on the side of the front support away from the hanging rear seat, the sliding block is slidably connected with the sliding rail, the sliding block is installed on the suspension rack through the plate lug, and the test system unit is connected with the plate lug. The hanging device comprises a test trolley arm, a bow plate, an upper support, a lower support, an upper lifting fork, a hydraulic pump, a connecting seat and a fixing seat, the fixing seat is installed on the test trolley, the test trolley arm is symmetrically installed on the upper end of the fixing seat, the two ends of the bow plate are rotatably connected with the test trolley arm, the bow plate is connected with the upper end of the upper lifting fork, the lower end of the upper lifting fork is rotatably connected with the telescopic end of the hydraulic pump and the lower support, the fixed end of the hydraulic pump and one end of the lower support are rotatably connected with the lower end of the fixing seat, the other end of the lower support is rotatably connected with the lower end of the connecting seat, the upper end of the connecting seat is rotatably connected with one end of the upper support, the other end of the upper support is rotatably connected with the middle part of the fixing seat through the upper lifting fork, and the connecting seat is connected with the connecting device. The test system unit comprises a displacement sensor, a displacement sensor signal processing module, a speed sensor, a speed sensor signal processing module, an acceleration sensor, an acceleration sensor signal processing module, a vibration sensor, a vibration sensor signal processing module, a three-axis sensor, a three-axis sensor signal processing module and a main control unit, the displacement sensor is connected with the main control unit through the displacement sensor signal processing module, the speed sensor is connected with the main control unit through the speed sensor signal processing module, the acceleration sensor is connected with the main control unit through the acceleration sensor signal processing module, the vibration sensor is connected with the main control unit through the vibration sensor signal processing module, the three-axis sensor is connected with the main control unit through the three-axis sensor signal processing module, and the displacement sensor is installed on the connecting device.

2. The lightweight powered chassis suspension bench device based on a field soil channel according to claim 1, characterized in that: The suspension bench includes a frame structure and a shock absorbing wheel structure, the shock absorbing wheel structure is connected with the connecting device through the frame structure, and the frame structure and the shock absorbing wheel structure are connected with the test system unit.

3. The lightweight powered chassis suspension bench device based on a field soil channel according to claim 2, characterized in that: The frame structure includes main frame pipes, auxiliary frame pipes, a main frame, an auxiliary frame, a large suspension arm, a small suspension arm and a rear axle load bearing support, two adjacent main frame pipes are connected by the auxiliary frame pipes to form a main frame, the main frame is connected with the connecting device, the main frame and the auxiliary frame are both installed at the bottom of the main frame, the two ends of the large suspension arm are respectively rotatably connected with the main frame and the rear axle load bearing support, the two ends of the small suspension arm are respectively rotatably connected with the auxiliary frame and the rear axle load bearing support, the rear axle load bearing support and the main frame are both connected with the shock absorbing wheel structure, and the main frame is connected with the test system unit.

4. The lightweight, powered chassis suspension bench device based on a field soil channel according to claim 2, characterized in that: The shock absorbing wheel structure includes a plate, a shock absorber, a shock absorber seat, a square tube, a bearing seat, a wheel shaft and a driven wheel, the driven wheel is connected with one end of the wheel shaft, the other end of the wheel shaft is rotatably installed in the bearing seat, the bearing seat is installed at the lower end of the square tube, the upper end of the square tube is connected with one side of the plate, the other side of the plate is connected with the frame structure, the two ends of the shock absorber are respectively rotatably connected with the square tube and the frame structure through the shock absorber seat, and the bearing seat is connected with the test system unit.

5. A method of using a field-plot based light-duty powertrain suspension rack apparatus, characterized by: The method includes the following steps: S1, start the light power chassis suspension bench device, the walking trolley walks on the walking track, the test trolley walks on the walking beam, the test trolley drives the suspension bench to walk in the field through the connecting device and the connecting device, and the light power chassis suspension bench device is the light power chassis suspension bench device based on the field soil tank in any one of claims 1-4; S2, when the suspension bench walks in the field, the speed sensor detects the moving speed of the suspension bench in the field, and converts the moving speed into an electric signal and feeds back to the speed sensor signal processing module; the speed sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit; S3, when the suspension bench walks in the field and jumps up and down, the displacement sensor detects the jumping displacement of the suspension bench, and converts the jumping displacement into an electric signal and feeds back to the displacement sensor signal processing module; the displacement sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit; S4, when the suspension bench walks in the field and vibrates, the vibration sensor detects the vibration frequency, vibration amplitude and vibration direction of the suspension bench walking in the field, and converts the vibration frequency, vibration amplitude and vibration direction into an electric signal and feeds back to the vibration sensor signal processing module; the vibration sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit; S5, when the suspension bench walks in the field and deviates, the three-axis sensor detects the deviation angle of the suspension bench walking in the field, and converts the deviation angle into an electric signal and feeds back to the three-axis sensor signal processing module; the three-axis sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit; S6, when the suspension bench walks in the field and jumps, the acceleration sensor detects the jumping acceleration of the suspension bench, and converts the jumping acceleration into an electric signal and feeds back to the acceleration sensor signal processing module. The acceleration sensor signal processing module converts the electric signal into a digital signal and feeds back to the main control unit.

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