A heavy-load vehicle road simulation system

Abstract

The present invention provides a heavy-load vehicle road simulation system, which aims to solve the problem in the prior art that vehicle road simulation systems cannot realistically simulate road conditions, resulting in large errors in heavy-load vehicle road simulation systems. A heavy-load vehicle road simulation system includes a base, a road simulator is provided on the base, the road simulator includes a base, a rotating belt is provided on the base, the rotating belts are provided with two, the two rotating belts are provided in parallel, a driving motor for driving the rotating belts to rotate is provided in the base, and the two rotating belts are driven by independent driving motors; an angle adjuster for adjusting the angle of the base relative to the base is provided between the base and the base, the angle adjuster includes a first hydraulic cylinder group and a second hydraulic cylinder group. By providing the first hydraulic cylinder group and the second hydraulic cylinder group, the real road conditions can be simulated more realistically, thereby improving the accuracy of the heavy-load vehicle road simulation system.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle performance testing, and in particular relates to a heavy-load vehicle road simulation system. Background Art

[0002] Indoor road simulation tests are widely used in the research and development of various vehicles due to their advantages such as good test repeatability, reduced road test costs, and shortened test cycles. In particular, heavy-loaded vehicles have special safety requirements, so there are certain risks in testing them on real roads.

[0003] The existing heavy-load vehicle road simulation system can only simulate flat road conditions, and this system cannot effectively simulate real road conditions. In addition, since the existing heavy-load vehicle road simulation system cannot be tilted, it cannot simulate slope road conditions. Summary of the Invention

[0004] The present invention provides a heavy-load vehicle road simulation system, which aims to solve the problem in the prior art that the vehicle road simulation system cannot simulate road conditions realistically, resulting in large errors in the heavy-load vehicle road simulation system.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A heavy-load vehicle road simulation system includes a base, a road simulator is provided on the base, the road simulator includes a base, a rotating belt is provided on the base, the rotating belts are arranged in parallel, a driving motor is provided in the base for driving the rotating belts to rotate, and the two rotating belts are driven by independent driving motors;

[0007] An angle adjuster for adjusting the angle of the base relative to the base is provided between the base and the pedestal, the angle adjuster comprising a first hydraulic cylinder group and a second hydraulic cylinder group, the first hydraulic cylinder group and the second hydraulic cylinder group being respectively located at two ends of the base, the first hydraulic cylinder group and the second hydraulic cylinder group each comprising two hydraulic cylinders, the hydraulic cylinder comprising a cylinder body and a piston, the cylinder body being fixedly connected to the base, and the two pistons of the first hydraulic cylinder group being rotatably connected to the base;

[0008] The two pistons of the second hydraulic cylinder group are connected to the base via a slider, the slider is slidably connected to the base, and the two pistons of the second hydraulic cylinder group are rotatably connected to the slider.

[0009] A further improved solution: a pressure sensor for detecting the force exerted on the cylinder body is provided between the cylinder body and the base, the pressure sensor is fixed to the base by screws, and the cylinder body is fixed to the pressure sensor by screws.

[0010] Based on the above technical solution: by setting up a pressure sensor, the force exerted on the base of a heavy-loaded vehicle during the simulation process can be tested, thereby effectively testing the impact of a heavy-loaded vehicle on the road surface during normal driving.

[0011] A further improved solution: a connecting lug is provided on the end of the base away from the slider, the same piston in the first hydraulic cylinder group is rotatably connected to the two connecting lugs, a connecting hole is provided on the connecting lug, and a connecting pin is provided on the piston, and the piston in the first hydraulic cylinder group is rotatably connected to the connecting lug through the connecting pin.

[0012] Based on the above technical solution: by setting the connecting lug, the first hydraulic cylinder group is easy to connect to the base, and when the base is adjusted in angle, the base can be easily rotated around the axis of the connecting pin without getting stuck, thereby improving the stability of the base during angle adjustment.

[0013] A further improved solution: the connecting lug and the base are an integrated structure, a reinforcing rib is provided between the connecting lug and the base, and the reinforcing rib is welded between the connecting lug and the base.

[0014] Based on the above technical solution: by providing reinforcing ribs, the connection between the connecting lug and the base has a higher connection strength, thereby improving the connection performance between the base and the first hydraulic cylinder group.

[0015] A further improved solution: a slide groove cooperating with the slider is provided on the base, a portion of the slider extends out of the slide groove, a groove is provided on the portion of the slider extending out of the slide groove, a portion of the piston of the second hydraulic cylinder group is located in the groove, and the piston of the second hydraulic cylinder group is rotatably connected to the slider via a pin shaft.

[0016] Based on the above technical solution, the grooves provided on the slider facilitate assembly of the second hydraulic cylinder assembly and the slider. Furthermore, when the base is adjusted, the slider can be extended or retracted into the base, thereby compensating for changes in base length caused by the angle change. This simplifies the connection structure between the base and the base, eliminating the need for complex compensation structures to compensate for changes in base length during angle adjustment.

[0017] Further improved solution: the base is further provided with an inclination angle sensor for detecting the inclination angle of the base, the inclination angle sensor is fixed to the base by screws, and the inclination angle sensor is located between the base and the base.

[0018] Based on the above technical solution: by setting up a tilt angle sensor, the tilt angle of the base can be easily detected, so that heavy-loaded vehicles can be tested at different tilt angles. The angle of the base can be easily observed, which improves the test accuracy.

[0019] A further improved solution is as follows: a pulley cooperating with the revolving belt is provided on the base, the driving machine drives the revolving belt to rotate via the pulley, and each revolving belt cooperates with at least two pulleys.

[0020] Based on the above technical solution: by providing a pulley, the driving machine can conveniently drive the rotary belt to rotate.

[0021] A further improved solution is as follows: the revolving belt is provided with ridges simulating road conditions, the ridges are plugged into the revolving belt, and the ridges are provided on a side of the revolving belt away from the pulley.

[0022] Based on the above technical solution: by setting the ridges, the ridges can simulate uneven roads, so that the heavy-load vehicle road simulation system is closer to the real road conditions.

[0023] A further improved solution is as follows: a slot is provided on the rotary belt, the cross-section of the slot is a trapezoid that is narrow at the top and wide at the bottom, and a rubber plug-in portion that cooperates with the slot is provided on the ridge.

[0024] Based on the above technical solution: the ribs and the slots are easy to assemble, and at the same time, the rubber plug-in part can produce a certain elastic deformation, so that the rubber plug-in part can be interference fit with the slot, thereby improving the connection strength between the ribs and the rotary belt.

[0025] A further improved solution is that the rubber plug-in portion is bonded to the ridge, and the rubber plug-in portion is provided with a pattern that increases the friction coefficient of the rubber plug-in portion.

[0026] Based on the above technical solution: the connection strength between the rubber plug-in part and the ridge is high.

[0027] The beneficial effects of the present invention are:

[0028] In actual application, a pit can be dug on the ground, and the heavy-load vehicle road simulation system can be installed in the pit, and the upper surface of the revolving belt can be made flush with the ground so that the vehicle to be tested can be conveniently parked on the revolving belt.

[0029] The drive motor is then turned on, causing the rotating belt to rotate. The wheels of the vehicle under test come into contact with the belt, causing the belt to rotate, thus simulating the vehicle under test driving on the road. Because different vehicle parameters require measurement, different sensors can be installed on the rotating belt, base, and foundation to meet different testing requirements.

[0030] When it is necessary to simulate a sloped road condition, the second hydraulic cylinder group pushes one end of the base to move upward. At this time, the base is tilted. During the tilting process of the base, the slider slides out of the base to compensate for the length change after the base tilts.

[0031] By providing the first hydraulic cylinder group and the second hydraulic cylinder group, real road conditions can be simulated more realistically, thereby improving the accuracy of the heavy-load vehicle road simulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For users of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 It is a schematic diagram of the first direction of a heavy-duty vehicle road simulation system.

[0034] Figure 2 It is a schematic diagram of the second direction of a heavy-duty vehicle road simulation system.

[0035] Figure 3 It is a schematic diagram of a heavy-load vehicle road simulation system without the rotating belt and pulley.

[0036] Figure 4 It is a schematic diagram of the assembly of ridges and turning belts in a heavy-duty vehicle road simulation system.

[0037] Description of the numbers in the figure:

[0038] 1-base; 2-road simulator; 21-base; 22-rotating belt; 23-pulley; 24-rib; 25-slot; 26-rubber plug-in part; 3-angle adjuster; 31-first hydraulic cylinder group; 32-second hydraulic cylinder group; 33-cylinder body; 34-piston; 35-slider; 351-groove; 352-pin shaft; 36-pressure sensor; 37-connecting lug; 38-connecting pin. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by users of this technology in the field without creative work are within the scope of protection of the present invention.

[0040] Example 1:

[0041] See Figures 1 to 4 A heavy-duty vehicle road simulation system includes a base 1, on which a road simulator 2 is provided. The road simulator 2 includes a base 21, on which a rotating belt 22 is provided. The rotating belts 22 are provided in two parallel configurations. A driving motor for driving the rotating belts 22 to rotate is provided in the base 21, and the two rotating belts 22 are driven by independent driving motors.

[0042] An angle adjuster 3 for adjusting the angle of the base 21 relative to the base 1 is provided between the base 21 and the base 1. The angle adjuster 3 includes a first hydraulic cylinder group 31 and a second hydraulic cylinder group 32. The first hydraulic cylinder group 31 and the second hydraulic cylinder group 32 are respectively located at two ends of the base 21. The first hydraulic cylinder group 31 and the second hydraulic cylinder group 32 each include two hydraulic cylinders. The hydraulic cylinder includes a cylinder body 33 and a piston 34. The cylinder body 33 is fixedly connected to the base 1. The two pistons 34 of the first hydraulic cylinder group 31 are rotatably connected to the base 21.

[0043] The two pistons 34 of the second hydraulic cylinder group 32 are connected to the base 21 via a slider 35 . The slider 35 is slidably connected to the base 21 , and the two pistons 34 of the second hydraulic cylinder group 32 are rotatably connected to the slider 35 .

[0044] The sensors configured in the heavy-duty vehicle road simulation system are determined according to different test requirements, and their installation locations and test principles refer to existing technologies. This solution does not improve the test system.

[0045] Example 2:

[0046] In order to optimize the performance of the heavy-load vehicle road simulation system and improve the stability of the heavy-load vehicle road simulation system, based on the above embodiment: a pressure sensor 36 for detecting the force exerted on the cylinder body 33 is provided between the cylinder body 33 and the base 1, and the pressure sensor 36 is fixed to the base 1 by screws, and the cylinder body 33 is fixed to the pressure sensor 36 by screws.

[0047] A connecting lug 37 is provided on the end of the base 21 away from the slider 35. The same piston 34 in the first hydraulic cylinder group 31 is rotatably connected to the two connecting lugs 37. A connecting hole is provided on the connecting lug 37, and a connecting pin 38 is provided on the piston 34. The piston 34 in the first hydraulic cylinder group 31 is rotatably connected to the connecting lug 37 through the connecting pin 38.

[0048] The connecting lug 37 and the base 21 are an integrated structure. A reinforcing rib is provided between the connecting lug 37 and the base 21 . The reinforcing rib is welded between the connecting lug 37 and the base 21 .

[0049] A sliding groove cooperating with the slider 35 is provided on the base 21, a portion of the slider 35 extends out of the sliding groove, and a groove 351 is provided on the portion of the slider 35 extending out of the sliding groove. A portion of the piston 34 of the second hydraulic cylinder group 32 is located in the groove 351, and the piston 34 of the second hydraulic cylinder group 32 is rotatably connected to the slider 35 via a pin shaft 352.

[0050] The base 21 is further provided with an inclination angle sensor for detecting the inclination angle of the base 21 . The inclination angle sensor is fixed to the base 21 by screws, and is located between the base 21 and the base 1 .

[0051] The angle sensor may also be replaced by other sensors. When the heavy-load vehicle road simulation system includes a controller, the angle sensor is communicatively connected to the controller.

[0052] Example 3:

[0053] In order to simplify the structure of the rotating belt 22 so that the rotating belt 22 can simulate more realistic road conditions, based on the above embodiment: a pulley 23 cooperating with the rotating belt 22 is provided on the base 21, and the driving machine drives the rotating belt 22 to rotate through the pulley 23, and each rotating belt 22 cooperates with at least two pulleys 23.

[0054] The revolving belt 22 is provided with a ridge 24 for simulating road conditions. The ridge 24 is plugged into the revolving belt 22 , and the ridge 24 is provided on a side of the revolving belt 22 away from the pulley 23 .

[0055] The rotating belt 22 is provided with a slot 25 , the cross-section of which is a trapezoid that is narrow at the top and wide at the bottom. The ridge 24 is provided with a rubber plug-in portion 26 that cooperates with the slot 25 .

[0056] The rubber plug-in portion 26 is bonded to the ridge 24 , and a pattern is provided on the rubber plug-in portion 26 to increase the friction coefficient of the rubber plug-in portion 26 .

[0057] Each revolving belt 22 may be provided with a plurality of ridges 24 of different shapes to simulate more realistic road conditions.

[0058] Each conveyor belt is driven by an independent driving machine, and the driving machine can drive two rotating belts 22 respectively to have different rotation speeds, thereby simulating more complex road conditions. The driving machine can be an electric motor or a hydraulic motor.

[0059] The following further describes a heavy-load vehicle road simulation system provided by the present invention in combination with its working principle:

[0060] In actual application, a pit can be dug on the ground, and the heavy-load vehicle road simulation system can be installed in the pit, and the upper surface of the revolving belt 22 can be made flush with the ground so that the vehicle to be tested can be easily parked on the revolving belt 22.

[0061] The drive motor is then turned on, causing the rotating belt 22 to rotate. The wheels of the vehicle under test come into contact with the rotating belt 22, causing the rotating belt 22 to rotate, thereby simulating the vehicle under test driving on the road. Because different parameters require measurement of different vehicles, different sensors can be installed on the rotating belt 22, base 21, and base 1 to meet different testing requirements.

[0062] When it is necessary to simulate a slope road condition, the second hydraulic cylinder group 32 pushes one end of the base 21 to move upward. At this time, the base 21 is in a tilted state. During the tilting process of the base 21, the slider 35 slides out of the base 21 to compensate for the length change of the base 21 after the tilt.

[0063] The present invention is not limited to the above-mentioned optional implementation methods. Under the premise of not conflicting with each other, the various solutions can be arbitrarily combined. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the scope of protection of the present invention.

Claims

1. A heavy-load vehicle road simulation system, characterized by: The road simulator comprises a base, the base being provided with a road simulator, the road simulator comprising a base, the base being provided with a rotating belt, the two rotating belts being provided with the rotating belts, the two rotating belts being provided with the rotating belts being provided with a driving motor for driving the rotating belts to rotate, the two rotating belts being driven by independent driving motors; An angle adjuster for adjusting the angle of the base relative to the base is provided between the base and the pedestal, the angle adjuster comprising a first hydraulic cylinder group and a second hydraulic cylinder group, the first hydraulic cylinder group and the second hydraulic cylinder group being respectively located at two ends of the base, the first hydraulic cylinder group and the second hydraulic cylinder group each comprising two hydraulic cylinders, the hydraulic cylinder comprising a cylinder body and a piston, the cylinder body being fixedly connected to the base, and the two pistons of the first hydraulic cylinder group being rotatably connected to the base; The two pistons of the second hydraulic cylinder group are connected to the base via a slider, the slider is slidably connected to the base, and the two pistons of the second hydraulic cylinder group are rotatably connected to the slider.

2. A heavy-load vehicle road simulation system according to claim 1, characterized in that: A pressure sensor for detecting the force exerted on the cylinder is provided between the cylinder and the base. The pressure sensor is fixed to the base by screws, and the cylinder is fixed to the pressure sensor by screws.

3. A heavy-load vehicle road simulation system according to claim 2, characterized in that: A connecting lug is provided on one end of the base away from the slider, and the same piston in the first hydraulic cylinder group is rotatably connected to the two connecting lugs. A connecting hole is provided on the connecting lug, and a connecting pin is provided on the piston. The piston in the first hydraulic cylinder group is rotatably connected to the connecting lug through the connecting pin.

4. A heavy-load vehicle road simulation system according to claim 3, characterized in that: The connecting lug and the base are an integrated structure. A reinforcing rib is provided between the connecting lug and the base, and the reinforcing rib is welded between the connecting lug and the base.

5. A heavy-load vehicle road simulation system according to claim 4, characterized in that: A slide groove cooperating with the slider is provided on the base, a portion of the slider extends out of the slide groove, a groove is provided on the portion of the slider extending out of the slide groove, a portion of the piston of the second hydraulic cylinder group is located in the groove, and the piston of the second hydraulic cylinder group is rotatably connected to the slider via a pin shaft.

6. A heavy-load vehicle road simulation system according to claim 5, characterized in that: The base is also provided with an inclination angle sensor for detecting the inclination angle of the base. The inclination angle sensor is fixed to the base by screws, and the inclination angle sensor is located between the base and the base.

7. A heavy-load vehicle road simulation system according to claim 6, characterized in that: The base is provided with a pulley that cooperates with the revolving belt. The driving machine drives the revolving belt to rotate through the pulley. Each revolving belt cooperates with at least two pulleys.

8. A heavy-load vehicle road simulation system according to claim 7, characterized in that: The revolving belt is provided with ridges for simulating road conditions. The ridges are plugged into the revolving belt and are arranged on a side of the revolving belt away from the pulley.

9. A heavy-load vehicle road simulation system according to claim 8, characterized in that: The rotary belt is provided with a slot, the cross-section of the slot is a trapezoid that is narrow at the top and wide at the bottom, and the ridge is provided with a rubber plug-in portion that matches the slot.

10. A heavy-load vehicle road simulation system according to claim 9, characterized in that: The rubber plug-in portion is bonded to the ridge, and a pattern for increasing the friction coefficient of the rubber plug-in portion is provided on the rubber plug-in portion.

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