A test device and method capable of flexibly simulating vehicle load of a roll-on passageway

Abstract

The present application relates to a kind of test devices that can simulate the load of vehicle of roll-on / roll-off channel flexibly, including multiple loading form trolley, guide rail and driving device;Multiple loading form trolley includes box-type vehicle body, counterweight column, counterweight and detachable roller;The bottom surface of box-type vehicle body is respectively installed with several counterweight columns along longitudinal direction and transverse direction, each counterweight column can be assembled with several counterweight, the load working condition of different gravity center position and load size is simulated by changing the position and quantity of counterweight;Roller mounting hole is set up in the length direction of the bottom surface of box-type vehicle body along both sides, several detachable rollers are installed in roller mounting hole, the number and installation position can be adjusted according to test scheme to meet the test demand of different contact area and axle number;Driving device drives multiple loading form trolley to move along guide rail on roll-on / roll-off channel.The present application can simulate the load working condition of different gravity center position, load size, contact area and axle number, improve the flexibility and adaptability of test device.

Description

Technical Field

[0001] This invention relates to the field of roll-on / roll-off (Ro-Ro) vehicle load testing technology, specifically to a test apparatus and method that can flexibly simulate the load of Ro-Ro vehicles. Background Technology

[0002] Ro-Ro ships are vessels that load and unload cargo vehicles using ramps. Vehicles enter and exit the ship using their own power, without external assistance. Therefore, during loading and unloading, the ro-ro channels, such as ramps, ramps, and cargo decks, are subjected to moving loads from the vehicles. Since the location, speed, and contact area of ​​the loads are constantly changing, this is a dynamic problem, more complex than a static problem. To study the structural response of ro-ro channel systems under moving vehicle loads, conducting experiments on ro-ro channel structures under such loads is a primary research method. Under laboratory conditions, the application of moving vehicle loads requires higher standards and faces more limitations. Current experimental setups have the following drawbacks: (1) the simulation of vehicle load forms is relatively simple and inflexible; (2) they cannot flexibly adapt to loading areas of different lengths. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a test device and method that can flexibly simulate the load of vehicles in roll-on / roll-off channels, which can flexibly change the center of gravity position of the vehicle load and the contact area between the vehicle and the loading area to simulate various vehicle load forms; and the length of the device can be flexibly changed according to the needs of the test scheme to adapt to different test conditions.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] A test device for flexibly simulating vehicle loads in a roll-on / roll-off (Ro-Ro) tunnel includes a multi-loading trolley, a guide rail, and a drive unit. The multi-loading trolley comprises a box-shaped body, counterweight columns, counterweight blocks, and detachable rollers. Several counterweight columns are mounted longitudinally and laterally on the bottom surface of the box-shaped body. Each counterweight column can be equipped with several counterweight blocks. By changing the position and number of counterweight blocks, different load conditions with varying center of gravity positions and load magnitudes can be simulated. Roller mounting holes are formed on both sides of the bottom surface of the box-shaped body along the length of the body. Several detachable rollers are detachably installed in these mounting holes. The number and installation position of the detachable rollers can be adjusted according to the test plan to meet the test requirements of different contact areas and different numbers of axles. The drive unit drives the multi-loading trolley to move along the guide rail on the Ro-Ro tunnel.

[0006] In the above scheme, the counterweight columns are arranged in two rows and are symmetrical about the center line of the box-shaped vehicle body; the counterweight columns in each row are evenly distributed.

[0007] In the above solution, the detachable roller is fixedly connected to the box-shaped vehicle body by bolts and can be installed at any position within the range of the roller mounting holes.

[0008] In the above scheme, the guide rail includes several spliced ​​guide rails in the middle and fixed guide rail frames at both ends. The number of spliced ​​guide rails can be adjusted according to the test requirements.

[0009] In the above scheme, the splicing guide rail adopts a threaded tube with external and internal threads at both ends, and two adjacent splicing guide rails are connected by internal and external threads; the fixed guide rail frame includes a horizontal tube and a vertical tube that are fixedly connected, the horizontal tube is connected to the splicing guide rail, and the bottom end of the vertical tube is fixed to the roll-on channel.

[0010] In the above scheme, the guide rail is provided with a grooved guide rail beam, the upper part of the grooved guide rail beam is provided with a through hole for the guide rail to pass through, and the lower part of the grooved guide rail beam is provided with a guide groove; the multi-loading type trolley also includes a guide disc installed on the side of the box-shaped vehicle body, and the upper end of the guide disc extends into the guide groove.

[0011] In the above scheme, the grooved guide rail beam is assembled in a segmented form, and its length can be adjusted accordingly with the adjustment of the length of the spliced ​​guide rail.

[0012] In the above scheme, the test device also includes a vehicle stopping frame set at the rear end of the test area and in front of the drive device. The vehicle stopping frame includes two columns and a stopping rope connecting the tops of the two columns. The stopping rope spans the test area. The multi-loading type vehicle also includes a stopping hook installed in front of the box-shaped body. When the drive device stops, the stopping hook can hook the stopping rope to slow down and stop the movement.

[0013] In the above scheme, the driving device is a motor, and the multi-loading type trolley also includes a pull ring installed at the front of the box-shaped body. The motor and the pull ring are connected by a traction device.

[0014] Accordingly, the present invention also proposes a test method for flexibly simulating the load of vehicles in roll-on / roll-off lanes, using the aforementioned test apparatus, and the test method includes the following steps:

[0015] Step 1: Select the guide rail length according to the needs of the experiment, fix the guide rail on the horizontal ground, fix the drive device on the ground, and set the speed and acceleration time of the drive device according to the required moving speed of the experiment.

[0016] Step 2: Based on the test requirements for contact area and number of axles, install the corresponding number of detachable rollers at the corresponding positions of the roller mounting holes on the multi-load carriage; then assemble the multi-load carriage, place it on the ground, and install it in conjunction with the guide rail; finally, connect the multi-load carriage to the drive unit.

[0017] Step 3: According to the requirements of the test for the center of gravity position and load size, place the corresponding number of counterweights on the counterweight columns at the corresponding positions on the multi-load trolley, and connect the speed measuring device and the information receiving device on the multi-load trolley; fix a stiffening plate on the route of the multi-load assembly trolley in the test area to simulate the roll-on / roll-off channel, and install the information acquisition equipment on it.

[0018] Step 4: Turn on the drive unit to move the multi-load trolley. After the multi-load trolley passes the stiffening plate in the test area, turn off the drive unit. This will give you the dynamic response of the roll-on / roll-off channel under the load of the moving vehicle.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. This invention arranges multiple counterweight columns inside the box-shaped body of the vehicle. By adjusting the placement and number of counterweights, load conditions with different center of gravity positions and load magnitudes can be simulated. By adjusting the number and installation position of the detachable rollers, load conditions with different contact areas and different numbers of axles can be simulated. Therefore, this test device can simulate various loading conditions, improving the flexibility and adaptability of the test device.

[0021] 2. The guide rail of the present invention adopts a splicing type, which can change the overall length of the test device according to the test requirements, thereby changing the movement distance of the trolley, further improving the flexibility and adaptability of the device.

[0022] 3. The present invention designs a trolley stopping frame to prevent the trolley from continuing to move rapidly out of the test area due to inertia after the drive device stops, thus ensuring the safety of the device. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0024] Figure 1 This is an overall structural diagram of the test device of the present invention that can flexibly simulate the load of vehicles in a roll-on / roll-off channel;

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of the multi-loading type trolley of the experimental device shown;

[0026] Figure 3 yes Figure 2 The front view of the multi-loading type vehicle is shown;

[0027] Figure 4 yes Figure 2 The front view of the multi-loading type vehicle is shown;

[0028] Figure 5 yes Figure 1 A schematic diagram of the spliced ​​guide rail structure of the experimental device shown;

[0029] Figure 6 yes Figure 1 A schematic diagram of the structure of the fixed guide rail frame at one end of the experimental device shown.

[0030] Figure 7 yes Figure 1 A schematic diagram of the fixed guide rail frame at the other end of the experimental device shown.

[0031] Figure 8 yes Figure 1 A schematic diagram of the grooved guide rail beam of the experimental device shown.

[0032] In the diagram: 10. Multi-loading trolley; 11. Box-type body; 12. Counterweight column; 13. Detachable roller; 14. Guide disc; 15. Stop hook; 16. Pull ring; 17. Roller mounting hole;

[0033] 20. Guide rail; 21. Interlocking guide rail; 22. Fixed guide rail bracket; 23. Grooved guide rail beam; 231. Through hole; 232. Guide groove;

[0034] 30. Drive unit;

[0035] 40. Trolley stopping frame; 41. Post; 42. Stopping rope. Detailed Implementation

[0036] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] like Figure 1 As shown, an embodiment of the present invention provides a test device that can flexibly simulate the load of vehicles in a roll-on / roll-off channel, including a multi-loading trolley 10, a guide rail 20, a drive device 30, and a trolley stopping frame 40.

[0038] See Figure 2-4The multi-loading trolley 10 includes a box-shaped body 11, counterweight columns 12, counterweight blocks (not shown), and detachable rollers 13. Several counterweight columns 12 are installed longitudinally and laterally on the bottom surface of the box-shaped body 11. Each counterweight column 12 can be equipped with several counterweight blocks. By changing the position and number of counterweight blocks, different load conditions with different center of gravity positions and load magnitudes can be simulated. Roller mounting holes 17 are opened on both sides of the bottom surface of the box-shaped body 11 along the length of the body. Several detachable rollers 13 are detachably installed in the roller mounting holes 17. The number and installation position of the detachable rollers 13 can be adjusted according to the test plan to meet the test requirements of different contact areas and different numbers of axles. The drive unit 30 drives the multi-loading trolley 10 to move along the guide rail 20 on the roll-on / roll-off channel (not shown).

[0039] In a further optimization, in this embodiment, the counterweight columns 12 are arranged in two rows, and are symmetrically arranged about the center line of the box-shaped body 11; each row of counterweight columns 12 is evenly distributed. The height of the counterweight columns 12 is the same as the height of the box-shaped body 11, and the counterweight columns 12 are welded and fixed to the bottom of the box-shaped body 11 to fix the counterweight.

[0040] In a further optimization, in this embodiment, multiple counterweights can be placed on each counterweight column 12, with the maximum number of layers depending on the thickness of the counterweights.

[0041] In a further optimization, in this embodiment, the roller mounting hole 17 is a rectangular opening extending along the direction of the box-shaped body 11. The detachable roller 13 is fixedly connected to the box-shaped body 11 by bolts and can be installed at any position within the range of the roller mounting hole 17. In use, the number of detachable rollers 13 to be installed and their respective positions are first determined according to the test plan. After the installation plan is determined, bolts can be used to fix the detachable rollers 13 to the underside of the box-shaped body 11 at predetermined positions.

[0042] In a further optimization, in this embodiment, the roller mounting hole 17 is located between the counterweight column 12 and the box-shaped body 11.

[0043] The experimental device designed in this invention allows the counterweights to be freely placed within the counterweight columns 12. Placing more counterweights on the counterweight columns 12 near the front of the trolley simulates the condition when the vehicle's cargo is positioned forward, i.e., the center of gravity is forward. Conversely, placing more counterweights on the counterweight columns 12 near the rear of the trolley simulates the condition when the vehicle's cargo is positioned backward, i.e., the center of gravity is backward. When the counterweights are concentrated on one side of the counterweight columns 12, the effect on the roll-on / roll-off channel when the vehicle's center of gravity is to the left or right can be simulated. Therefore, depending on the placement and number of counterweights, the trolley can simulate various loading conditions, improving the flexibility of the device.

[0044] Meanwhile, the detachable rollers 13 can simulate the contact between the vehicle wheels and the test area. Since the pressure exerted by the vehicle load on the road surface is related to the contact area between the wheels and the road surface, the contact surface between the wheels and the road surface is usually simplified to a rectangle in the study of vehicle load, so as to more easily calculate the magnitude of the vehicle load. According to this method, the present invention can change the total contact area by changing the number of detachable rollers 13, and can simulate vehicle forms with different numbers of axles, thereby improving the flexibility of the device and enabling the present invention to complete more test conditions.

[0045] Therefore, the present invention can flexibly change the center of gravity position of the vehicle load, the load size, the contact area between the vehicle and the loading area, and the number of loaded axles to simulate various vehicle load forms.

[0046] like Figure 5-8 As shown, the guide rail 20 includes several interlocking guide rails 21 located in the middle, fixed guide rail frames 22 located at both ends, and grooved guide rail beams 23 mounted on the interlocking guide rails 21. The interlocking guide rails 21 are threaded tubes with external and internal threads at both ends, and adjacent interlocking guide rails 21 are connected by these threads. The fixed guide rail frames 22 include two horizontal and vertical tubes welded at a 90-degree angle. The horizontal tubes are connected to the interlocking guide rails 21 (one end of the horizontal tube has an external thread, and the other end has an internal thread), and the bottom end of the vertical tube is fixed to the roll-on / roll-off channel via a base. The grooved guide rail beams 23 have through holes 231 at the top for the interlocking guide rails 21 to pass through. The diameter of the hole is approximately 0.2 mm larger than the diameter of the interlocking guide rails 21, allowing the interlocking guide rails 21 to be inserted into the through holes 231 of the grooved guide rail beams 23. The grooved guide rail beams 23 have guide grooves 232 at the bottom. Preferably, the grooved guide beam 23 is assembled in a segmented manner, and its length can be adjusted accordingly with the adjustment of the length of the spliced ​​guide rail 21.

[0047] See also Figure 2The multi-loading type vehicle 10 also includes a guide disc 14 installed on the side of the box-shaped body 11. The upper end of the guide disc 14 extends into the guide groove 232 to restrict the movement route of the vehicle. The guide disc 14 is located on the upper part of both sides of the box-shaped body 11 and is connected to the body through a pivot. The guide disc 14 can rotate around the pivot passing through the center. The height of the guide disc 14 is higher than the body, and the protruding part can cooperate with the guide groove 232 of the grooved guide beam 23. The width of the guide groove 232 is 1mm greater than the thickness of the guide disc 14, and the height of the guide groove 232 is higher than the part of the guide disc 14 that is higher than the body, so the guide disc 14 can be inserted into the guide groove 232. Since there is a gap between the guide groove 232 and the guide disc 14, the guide disc 14 can slide smoothly in the guide groove 232 without significantly affecting the movement speed of the vehicle due to friction between the guide groove 232 and the guide disc 14. At the same time, since the height of the guide groove 232 has a margin, even if the vehicle is placed in a test area that is not completely flat and has some undulations, it can still be ensured that the guide disc 14 will not collide with the top of the guide groove 232.

[0048] The experimental device designed in this invention comprises a complete guide rail 20 consisting of a spliced ​​guide rail 21, a fixed guide rail frame 22, and grooved guide rail beams 23. In use, one spliced ​​guide rail 21 is first connected to a fixed guide rail frame 22. The number of additional spliced ​​guide rails 21 is then determined based on the experimental requirements. After the spliced ​​guide rails 21 are connected, the same number of grooved guide rail beams 23 are fitted onto them. The outermost spliced ​​guide rail 21 is then connected to another fixed guide rail frame 22 to form the complete guide rail 20 device. The grooved guide rail beams 23 are adjusted to ensure a smooth transition of the guide grooves 232 at the splicing points. The assembled guide rail 20 guides and restricts the movement of the trolley, ensuring it moves linearly along the guide rail 20 and preventing it from deviating from the test area during movement, thus avoiding safety issues. By changing the number of spliced ​​guide rails 21, the length of the guide rail 20 can be flexibly changed, thereby altering the trolley's movement distance and further improving the device's flexibility.

[0049] In a further optimization, this embodiment of the test apparatus also includes a vehicle stopping frame 40 located at the rear end of the test area and in front of the drive device 30. The vehicle stopping frame 40 includes two uprights 41 and a stopping rope 42 connecting the tops of the two uprights 41, with the stopping rope 42 spanning the test area. See also Figure 2The multi-loading trolley 10 also includes a stop hook 15 installed at the front of the box-shaped body 11. The stop hook 15 is symmetrically distributed about the center line of the trolley. The stop hook 15 can be connected to the corresponding opening at the front of the trolley by bolts. The stop hook 15 acts as a buffer at the front of the trolley. After the trolley is pulled by the drive device 30 and moves through the test area, the stop hook 15 can hook the stop rope 42 on the stop frame 40 of the trolley through its upward-extending arc structure to slow down and stop the trolley, preventing the trolley from continuing to move quickly due to inertia and rushing out of the test area, which may cause potential safety hazards.

[0050] In this embodiment, the drive device 30 is a motor, and the multi-loading trolley 10 also includes a pull ring 16 installed at the front of the box-shaped body 11. The pull ring 16 is installed below the stop hook 15 and is located on the center line of the trolley. Its function is to fix the medium for traction of the trolley, such as the traction rope or the hook, and to serve as the medium for connecting the motor and the trolley. When in use, one end of the rope is connected to the motor and the other end is connected to the pull ring 16, so that the power of the drive device 30 can be applied to the trolley. By changing the speed of the motor, the speed at which the load applied to the trolley moves can be changed.

[0051] Accordingly, the present invention also proposes a test method for flexibly simulating the load of vehicles in roll-on / roll-off lanes, using the aforementioned test apparatus, and the test method includes the following steps:

[0052] Step 1: Select the length of guide rail 20 according to the needs of the experiment, and fix guide rail 20 on a horizontal surface. Fix drive device 30 on the ground, and set the rotation speed and acceleration time of drive device 30 according to the required moving speed of the experiment. In this embodiment, select the number of splicing guide rails 21 according to the needs of the experiment, connect them to the fixed guide rail frame 22, and fix them on a horizontal surface to complete the installation of guide rail 20.

[0053] Step 2: Based on the experimental requirements for contact area and number of axles, install the corresponding number of detachable rollers 13 at the corresponding positions of the roller mounting holes 17 on the multi-load type trolley 10; then assemble the multi-load type trolley 10 and place it on the ground, adapting it to the guide rail; finally, connect the multi-load type trolley 10 to the drive device 30. In this embodiment, after installing the detachable rollers 13, place the guide discs 14 on both sides of the multi-load type trolley 10 in the guide grooves 232 of the grooved guide rail beam 23, fix one end of the traction rope to the stop hook 15 of the multi-load type trolley 10, and connect the other end to the drive device 30, ensuring that the rope and the guide rail are placed parallel; then place the trolley stop frame 40 between the multi-load type trolley 10 and the drive device 30, close to the drive device 30, and fix it to the ground, ensuring that when the multi-load type trolley 10 moves to the trolley stop frame 40, the stop hook 15 can hook the stop rope 42 and quickly decelerate to a stop, without colliding with the drive device 30.

[0054] Step 3: According to the requirements of the test for the center of gravity position and load size, place the corresponding number of counterweights on the counterweight column 12 at the corresponding position on the multi-load trolley 10, and connect the speed measuring device and the information receiving device to the multi-load trolley 10; fix a stiffening plate on the route of the multi-load trolley 10 in the test area to simulate the roll-on / roll-off channel, and install information acquisition equipment (such as strain gauges) on it.

[0055] Step 4: Activate the drive unit 30 to move the multi-load trolley 10. After the multi-load trolley 10 passes the stiffening plate in the test area, deactivate the drive unit 30. This allows us to obtain the dynamic response of the roll-on / roll-off channel under the vehicle's moving load. In this embodiment, the drive unit 30 is deactivated after the multi-load trolley 10 passes the stiffening plate in the test area but before it reaches the trolley stopping frame 40, allowing the trolley to stop.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A test device capable of flexibly simulating the load of a vehicle in a roll-on / roll-off channel, characterized in that, The test device comprises a multi-loading trolley, a guide rail and a driving device. The multi-loading trolley comprises a box-shaped body, counterweight columns, counterweight blocks and detachable rollers; the bottom surface of the box-shaped body is provided with a plurality of counterweight columns arranged in longitudinal and transverse directions, each of the counterweight columns is provided with a plurality of counterweight blocks, the positions and numbers of the counterweight blocks are changed to simulate different load conditions of different centers of gravity and load sizes; a roller mounting hole is formed in the length direction of the bottom surface of the box-shaped body, a plurality of detachable rollers are mounted in the roller mounting hole in a detachable manner, and the numbers and mounting positions of the detachable rollers can be adjusted according to test schemes to meet the test requirements of different contact areas and different numbers of axles. The driving device drives the multi-loading trolley to move on the rolling channel along the guide rail. The guide rail comprises a plurality of spliced guide rails arranged in the middle and fixed guide rail frames arranged at both ends, the numbers of the spliced guide rails are adjusted according to test requirements; the spliced guide rail is provided with a groove guide rail beam, the upper part of the groove guide rail beam is provided with a through hole for the spliced guide rail to pass through, and the lower part of the groove guide rail beam is provided with a guide sliding groove; the multi-loading trolley further comprises a guide disc mounted on the side surface of the box-shaped body, and the upper end of the guide disc extends into the guide sliding groove.

2. The test device capable of flexibly simulating the vehicle load of a roll-on / roll-off passage according to claim 1, characterized in that, The counterweight columns are arranged in two rows and symmetrically arranged about the center line of the box-shaped body; each row of counterweight columns is uniformly distributed.

3. The test device capable of flexibly simulating the vehicle load of a roll-on / roll-off passage according to claim 1, characterized in that, The detachable roller is fixedly connected with the box-shaped body by bolts and can be installed at any position within the range of the roller mounting hole.

4. The test device capable of flexibly simulating the vehicle load of a roll-on / roll-off passage according to claim 1, characterized in that, The spliced guide rail adopts a threaded pipe provided with an external thread and an internal thread at both ends, and adjacent two spliced guide rails are connected through the internal and external threads; the fixed guide rail frame comprises horizontally connected pipe fittings and vertically connected pipe fittings, the horizontally connected pipe fittings are connected with the spliced guide rail, and the vertically connected pipe fittings are fixedly connected with the rolling channel at the bottom end.

5. The test device capable of flexibly simulating the vehicle load of a roll-on / roll-off passage according to claim 1, characterized in that, The groove guide rail beam is assembled in a segmented form, and its length can be adjusted according to the adjustment of the length of the spliced guide rail.

6. The test device capable of flexibly simulating the vehicle load of a roll-on / roll-off passage according to claim 1, characterized in that, The test device further comprises a trolley stopping frame arranged at the tail end of the test area and located in front of the driving device, the trolley stopping frame comprises two columns and a stopping rope connected with the top ends of the two columns, and the stopping rope crosses the test area; the multi-loading trolley further comprises a stopping hook mounted on the front of the box-shaped body; when the driving device stops, the stopping hook can hook the stopping rope to slow down and stop moving.

7. The test device capable of flexibly simulating the vehicle load of a roll-on / roll-off passage according to claim 6, characterized in that, The driving device adopts a motor, and the multi-loading trolley further comprises a pull ring mounted on the front of the box-shaped body, and the motor and the pull ring are connected through a traction device.

8. A test method capable of flexibly simulating vehicle load of a ro-ro passage, characterized in that, The test method comprises the following steps: Step 1: according to the test requirements, the length of the guide rail is selected, the guide rail is fixed on the horizontal ground, the driving device is fixed on the ground, and the rotating speed and acceleration time of the driving device are set according to the moving speed required by the test; Step 2, according to the requirements of the test for the contact area and the number of axles, a corresponding number of detachable rollers are installed in the corresponding positions of the roller mounting holes of the multi-load form trolley; then the multi-load form trolley is assembled and placed on the ground, and is fitted and installed with the guide rail, and finally the multi-load form trolley is connected with the driving device; Step 3, according to the requirements of the test for the position of the center of gravity and the size of the load, a corresponding number of counterweights are placed on the counterweight columns at the corresponding positions on the multi-load form trolley, and a speed measuring device and an information receiving device are connected on the multi-load form trolley; a reinforced plate is fixed on the route on which the multi-load form trolley travels in the test area to simulate a roll-on / roll-off channel, and an information acquisition device is installed thereon; Step 4, the driving device is started to pull the multi-load form trolley to move, and the driving device is turned off after the multi-load form trolley passes through the reinforced plate in the test area, so that the dynamic response of the roll-on / roll-off channel under the action of the moving load of the vehicle can be obtained.

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