Automatic tilting device for traffic object simulation body used for unmanned driving test

Abstract

The present invention discloses an automatic tilting device for a traffic object simulation body used for unmanned driving test, comprising: a towing platform, a mounting groove is provided in the towing platform and an automatic tilting device is provided inside the mounting groove, the automatic tilting device comprises a slide groove seat, a slide groove swing rod, a swing connecting rod, a swing seat and a swing rod, the slide groove seat is fixed inside the mounting groove and fixed by bolts, a first slide groove is provided inside the slide groove seat and a sliding column is provided inside the first slide groove, a toothed slider is provided inside the slide groove seat and the toothed slider and the sliding column are fixedly connected, and the sliding column is slidably connected to the first slide groove through the toothed slider. The present invention is embedded and fixed in a dummy towing bearing platform, and can simulate the body movements of pedestrians more accurately and realistically, ensure a higher experimental test accuracy, and avoid the influence of experimental test work and results by test tools such as experimental test simulation objects.

Description

Technical Field

[0001] The present invention relates to the technical field of driving test, and more specifically to an automatic tilting device for a traffic object simulation body used for unmanned driving test. Background Art

[0002] The research and development of ADAS for smart cars is a strategic development direction for all car companies. With the implementation of supporting technologies, laws and regulations, the mass production of smart cars with ADAS functions (hereinafter referred to as smart cars) is just around the corner, and will gradually enter people's daily lives, and ultimately achieve highly safe, intelligent transportation without human intervention. In the research and development stage of smart cars, relevant unmanned driving tests and experiments are very necessary, but it is impossible to carry out relevant testing work on actual roads. This requires the use of various test equipment and related traffic simulation bodies in closed test sites to build real traffic scenes for relevant unmanned driving tests and experiments, so as to obtain a large amount of test data for research and development.

[0003] A dummy is a type of traffic simulator. In actual testing, it is basically fixed on a load-bearing platform or a towing platform to simulate the walking of a person in actual traffic. Some dummies have comprehensive functions. During the test, their arms and lower limbs can swing to simulate the upper and lower limb movements of a person when walking. However, when a real person walks, the body basically leans forward at a certain angle, especially when starting or when a pedestrian suddenly crosses the road. In order to simulate the movements and postures of pedestrians more realistically. Therefore, a new technical solution is needed to solve this problem. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic tilting device for a traffic object simulation body used for unmanned driving tests. The automatic tilting device is embedded and fixed in a dummy towing carrying platform, and can simulate the body movements of pedestrians more accurately and realistically, thereby ensuring a higher experimental test accuracy, avoiding the influence of test tools such as experimental test simulation objects on the experimental test work and results, and meeting practical application needs.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic tilting device for a traffic simulation body used for unmanned driving tests, comprising: a towing platform, a mounting groove is provided in the towing platform and an automatic tilting device is provided inside the mounting groove, the automatic tilting device comprises a slide groove seat, a slide groove swing rod, a swing connecting rod, a swing seat and a swing rod, the slide groove seat is fixed inside the mounting groove and fixed by bolts, a first slide groove is provided inside the slide groove seat and a sliding column is provided inside the first slide groove, a toothed slider is provided inside the slide groove seat and the toothed slider is fixedly connected to the sliding column, the sliding column is slidably connected to the first slide groove through the toothed slider, a slide groove swing rod is provided outside the sliding column and a second slide groove is provided at the connecting end of the slide groove swing rod and the sliding column, the The sliding column is inserted into the second slide groove and the second slide groove is slidably connected to the sliding column, the other end of the slide groove rocker is provided with a swing link and a swing link, the end of the swing link is provided with a fixed shaft and the upper part of the fixed shaft is provided with a swing rod, the outside of the swing rod is provided with a swing seat and the inside of the swing seat is provided with a swing shaft, the swing shaft and the swing rod are connected and the swing rod is rotatably connected with the swing shaft through the swing shaft, a support rod is provided on the upper part of the swing rod and the support rod is connected to the simulation dummy, a drag belt passes through the inside of the towing platform and the drag belt passes through the slide groove seat, the drag belt and the toothed slider are mutually embedded and a pressure plate is provided at the lower part, the pressure plate is connected to the toothed slider by bolts, and the drag belt is fixedly connected to the toothed slider through the pressure plate.

[0006] As a preferred embodiment of the present invention, holes are provided at both ends of the dragging platform and the holes are fitted with the outer shape of the dragging belt.

[0007] As a preferred embodiment of the present invention, the surface of the dragging platform is provided with fixing holes and the fixing holes are distributed in a rectangular structure.

[0008] As a preferred embodiment of the present invention, a fixing seat is provided on the surface of the slide slot seat and a limiting rod is provided inside the fixing seat. The limiting rod is threadedly connected to the slide slot seat, and the limiting rod and the fixing seat form a limiting mechanism of the slide slot rocker arm.

[0009] As a preferred embodiment of the present invention, the fixing seat and the limiting rod are provided in two groups and are axially symmetrically distributed along the center line of the slide slot seat, and the limiting rod is located on both sides of the slide slot swing rod and contacts with the slide slot swing rod.

[0010] As a preferred embodiment of the present invention, a connecting shaft is provided at the connection between the slide groove swing arm and the swing link, and the slide groove swing arm rotates relative to the swing link through the connecting shaft.

[0011] As a preferred embodiment of the present invention, the connection between the dragging belt and the toothed slider forms teeth matching therewith, the teeth of the dragging belt and the toothed slider are meshed with each other, and the two ends of the slide seat are provided with grooves, and the grooves and the toothed slider are interlocked with each other.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The embedded device of the present invention is fixed in the dummy dragging and carrying platform, which can simulate the body movements of pedestrians more accurately and realistically, ensure higher experimental test accuracy, and avoid the influence of experimental test simulation objects and other test tools on experimental test work and results.

[0014] (2) The present invention provides a fixed seat on the upper part of the slide seat and a limit rod inside the fixed seat. The limit rod and the fixed seat are threadedly connected to each other, so as to adjust the length of the limit rod inside the fixed seat, thereby limiting the position of the sliding column and adjusting the inclination angle of the swing arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the enlarged structure of part A of the present invention;

[0017] Figure 3 This is a schematic diagram of the bottom structure of part A of the present invention.

[0018] In the figure: dragging platform-1, fixing hole-2, mounting slot-3, hole slot-4, dragging belt-5, slide slot seat-6, fixing seat-7, limit rod-8, first slide slot-9, sliding column-10, second slide slot-11, slide slot swing rod-12, connecting shaft-13, swing connecting rod-14, supporting rod-15, swing rod-16, swing seat-17, swing shaft-18, fixing shaft-19, slot-20, toothed slider-21, pressure plate-22. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-3The present invention provides a technical solution: an automatic tilting device for a traffic object simulation body used for unmanned driving test, comprising: a towing platform 1, a mounting groove 3 is provided in the towing platform 1, and an automatic tilting device is provided inside the mounting groove 3, the automatic tilting device comprises a slide groove seat 6, a slide groove swing rod 12, a swing connecting rod 14, a swing seat 17 and a swing rod 16, the slide groove seat 6 is fixed inside the mounting groove 3 and fixed by bolts, a first slide groove 9 is provided inside the slide groove seat 6, and a sliding column 10 is provided inside the first slide groove 9, a toothed slider 21 is provided inside the slide groove seat 6, and the toothed slider 21 is fixedly connected to the sliding column 10, the sliding column 10 is slidably connected to the first slide groove 9 through the toothed slider 21, a slide groove swing rod 12 is provided outside the sliding column 10, and a second slide groove 11 is provided at the connecting end of the slide groove swing rod 12 and the sliding column 10, the sliding column 10 is inserted into the second slide groove 11, and the second slide groove 1 1 is slidably connected with the sliding column 10, the other end of the slide slot swing rod 12 is provided with a swing link 14 and the swing link 14, the end of the swing link 14 is provided with a fixed shaft 19 and a swing rod 16 is provided on the upper part of the fixed shaft 19, a swing seat 17 is provided outside the swing rod 16 and a swing shaft 18 is provided inside the swing seat 17, the swing shaft 18 is connected with the swing rod 16 and the swing rod 16 is rotatably connected with the swing shaft 18 through the swing shaft 18, a support rod 15 is provided on the upper part of the swing rod 16 and the support rod 15 is connected with the simulation dummy, a dragging belt 5 passes through the inside of the dragging platform 1 and the dragging belt 5 passes through the slide slot seat 6, the dragging belt 5 and the toothed slider 21 are interlocked and a pressing plate 22 is provided at the lower part, the pressing plate 22 is connected with the toothed slider 21 by bolts, the dragging belt 5 is fixedly connected with the toothed slider 21 through the pressing plate 22, the tooth surface of the dragging belt 5 is meshed with the toothed slider 21 and is pressed by the pressing plate 22. When the belt 5 is dragged, the toothed slider 21 is first driven to slide in the chute seat 6. This action is transmitted to the swing rod 16 through the chute swing rod 12 and the swing link 14, so that the swing rod 1 rotates inside the swing seat 17 through the swing shaft 18. The toothed slider 21 stops when it slides to the chute limit of the fixed seat, and the entire tilting mechanism is completed. The dummy support rod fixed on the swing rod 16 tilts a certain angle to achieve the purpose of simulating the forward leaning posture of pedestrians. There is an adjustment mechanism at the upper limit of the chute seat 6, which can adjust the tilt angle within the maximum tilt angle to simulate the forward leaning angle of the body of different pedestrians at different walking speeds. The device does not need to add additional power and control modules, and achieves the purpose of automatic tilting action through linkage.

[0021] Further improvement, such as Figure 1 As shown: holes 4 are provided at both ends of the dragging platform 1 and the holes 4 fit in with the outer shapes of the dragging belt 5. The holes 4 fit in with the dragging belt 5, which increases the stability of the dragging belt 5 when dragging.

[0022] Further improvement, such as Figure 1As shown: the surface of the towing platform 1 is provided with fixing holes 2 and the fixing holes 2 are distributed in a rectangular structure, and the fixing holes 2 are used to fix the towing platform 1.

[0023] Further improvement, such as Figure 2 As shown: a fixed seat 7 is provided on the surface of the slide seat 6 and a limit rod 8 is provided inside the fixed seat 7. The limit rod 8 is threadedly connected to the slide seat 6. The limit rod 8 and the fixed seat 7 form a limit mechanism of the slide swing rod 12. The limit rod 8 is rotated to make it extend and retract inside the fixed seat 7, thereby limiting the sliding range of the slide swing rod 12 and realizing the control of the tilt angle.

[0024] Further improvement, such as Figure 2 As shown: a connecting shaft 13 is provided at the connection between the slide slot rocker arm 12 and the swing link 14, the slide slot rocker arm 12 rotates with the swing link 14 through the connecting shaft 13, and the swing link 14 is rotationally connected to the slide slot rocker arm 12 through the connecting shaft 13, thereby increasing the flexibility of the swing link 14.

[0025] Further improvement, such as Figure 3 As shown: the connection between the dragging belt 5 and the toothed slider 21 forms teeth that match them, the teeth of the dragging belt 5 and the toothed slider 21 are meshed with each other, the two ends of the slide seat 6 are provided with grooves 20 and the grooves 20 and the toothed slider 21 are interlocked with each other, the toothed slider 21 and the teeth on the surface of the dragging belt 5 are interlocked, which increases the friction with the toothed slider 21 and can drive the fixed column to slide stably.

[0026] The tooth surface of the dragging belt 5 of the present invention meshes with the toothed slider 21 and is pressed by the pressure plate 22. When the dragging belt 5 moves, it first drives the toothed slider 21 to slide in the chute seat 6. This action is transmitted to the swing rod 16 through the chute swing rod 12 and the swing connecting rod 14, so that the swing rod 1 rotates inside the swing seat 17 through the swing shaft 18. The toothed slider 21 stops when it slides to the chute limit of the fixed seat, and the entire tilting mechanism is completed. The dummy support rod fixed on the swing rod 16 tilts a certain angle to achieve the purpose of simulating the forward leaning posture of pedestrians walking. There is an adjustment mechanism at the upper limit of the chute seat 6, which can adjust the tilt angle within the maximum tilt angle to simulate the forward leaning angle of the body of different pedestrians at different walking speeds. The device does not need to add additional power and control modules, and achieves the purpose of automatic tilting action through linkage.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic tilting device for a traffic simulation body used for unmanned driving test, characterized in that: include: A towing platform (1), wherein a mounting groove (3) is provided in the towing platform (1), and an automatic tilting device is provided inside the mounting groove (3), wherein the automatic tilting device comprises a slide groove seat (6), a slide groove swing rod (12), a swing connecting rod (14), a swing seat (17) and a swing rod (16), wherein the slide groove seat (6) is fixed inside the mounting groove (3) and is fixed by bolts, wherein a first slide groove (9) is provided inside the slide groove seat (6), and a sliding column (10) is provided inside the first slide groove (9), wherein the slide groove seat ( 6) A toothed slider (21) is provided inside and the toothed slider (21) is fixedly connected to the sliding column (10), the sliding column (10) is slidably connected to the first sliding groove (9) through the toothed slider (21), a sliding groove swing rod (12) is provided outside the sliding column (10), and a second sliding groove (11) is provided at the connecting end of the sliding groove swing rod (12) and the sliding column (10), the sliding column (10) is inserted into the second sliding groove (11), and the second sliding groove (11) and the sliding column (10) are slidably connected. The other end of the slide slot swing rod (12) is provided with a swing link (14), and the swing link (14) is provided with a fixed shaft (19) at the end of the swing link (14), and a swing rod (16) is provided on the upper part of the fixed shaft (19), and a swing seat (17) is provided outside the swing rod (16), and a swing shaft (18) is provided inside the swing seat (17), and the swing shaft (18) is connected to the swing rod (16), and the swing rod (16) is connected to the swing shaft (18) by rotation between the swing shaft (18) and the swing shaft (18). The swing rod (16) is provided with a support rod (15) on its upper part and the support rod (15) is connected to the simulation dummy; a dragging belt (5) passes through the inside of the dragging platform (1) and the dragging belt (5) passes through the slide seat (6); the dragging belt (5) and the toothed slider (21) are interlocked with each other and a pressure plate (22) is provided at the lower part; the pressure plate (22) is connected to the toothed slider (21) by bolts; and the dragging belt (5) is fixedly connected to the toothed slider (21) by the pressure plate (22).

2. The automatic tilting device for traffic simulation body used for unmanned driving test according to claim 1, characterized in that: Holes (4) are provided at both ends of the dragging platform (1), and the holes (4) and the outer shapes of the dragging belts (5) are interlocked.

3. The automatic tilting device for traffic simulation body used for unmanned driving test according to claim 1, characterized in that: The surface of the dragging platform (1) is provided with fixing holes (2), and the fixing holes (2) are distributed in a rectangular structure.

4. The automatic tilting device for traffic simulation body used for unmanned driving test according to claim 1, characterized in that: A fixing seat (7) is provided on the surface of the slide groove seat (6) and a limiting rod (8) is provided inside the fixing seat (7). The limiting rod (8) and the slide groove seat (6) are threadedly connected, and a limiting mechanism of the slide groove swing rod (12) is formed between the limiting rod (8) and the fixing seat (7).

5. The automatic tilting device for traffic simulation body used for unmanned driving test according to claim 4, characterized in that: The fixing seat (7) and the limiting rod (8) are provided in two groups and are axially symmetrically distributed along the center line of the slide slot seat (6); the limiting rod (8) is located on both sides of the slide slot swing rod (12) and is in contact with the slide slot swing rod (12).

6. The automatic tilting device for traffic simulation body used for unmanned driving test according to claim 5, characterized in that: A connecting shaft (13) is provided at the connection between the slide groove swing rod (12) and the swing link (14), and the slide groove swing rod (12) and the swing link (14) are mutually rotated via the connecting shaft (13).

7. The automatic tilting device for traffic simulation body used for unmanned driving test according to claim 2, characterized in that: The connection between the dragging belt (5) and the toothed slider (21) forms teeth matching therewith, the teeth of the dragging belt (5) and the toothed slider (21) are meshed with each other, and the two ends of the slide seat (6) are provided with grooves (20), and the grooves (20) and the toothed slider (21) are interlocked with each other.

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