A movable folding traffic sign support device for testing of intelligent speed limiting system of automobile

Abstract

The application discloses a movable folding traffic sign support device for intelligent speed limit system testing of an automobile, which comprises a base, a first supporting rod, a second supporting rod, a third supporting rod, speed limit sign fixing structures and speed limit signs; the upper end of the base is sleeved with the lower end of the vertically distributed first supporting rod; the upper end of the first supporting rod is sleeved with the lower end of the vertically distributed second supporting rod; the upper end of the second supporting rod is hingedly connected with the lower end of the third supporting rod; the upper end of the third supporting rod is provided with two speed limit sign fixing structures with adjustable vertical spacing; and the front sides of the two speed limit sign fixing structures are used for fixedly connecting the speed limit signs. The movable folding traffic sign support device can realize the disassembly, folding, movement and adaptive installation of speed limit signs of various sizes of the supporting device through the disconnection type detachable supporting rods and the insertion pins and the clamping grooves and the bolts, and can quickly and reliably assist in completing the intelligent speed limit system testing scene arrangement.

Description

Technical Field

[0001] This invention relates to the field of intelligent connected vehicle testing technology, and in particular to a movable foldable traffic sign support device for testing intelligent speed limit systems of automobiles. Background Technology

[0002] With the continuous development of intelligent connected vehicle technology, the level of vehicle intelligence is gradually improving, and more and more vehicles are equipped with intelligent speed limit systems with functions such as intelligent speed limit display, intelligent speed limit reminder or intelligent speed limit control.

[0003] The existing new vehicle evaluation procedure "China New Car Assessment Program (C-NCAP) 2021 Edition" released by the China Automotive Technology and Research Center, as well as the recommended national standard "Performance Requirements and Test Methods for Intelligent Speed ​​Limiting Systems of Automobiles (Draft for Approval)," both include test scenarios for the function of intelligent speed limiting systems of vehicles.

[0004] Currently, the testing scenarios for intelligent speed limit systems for automobiles mainly involve using cylindrical poles fixed to the ground on one side of the road to support speed limit signs. In actual testing, due to the variety of speed limits that need to be set up and the need to avoid the impact of multiple speed limit signs appearing within a short distance on the testing process, it is necessary to flexibly and quickly deploy speed limit signs.

[0005] However, the existing speed limit signs fixed to one side of the road limit the testing process to be restricted by the test site and road conditions, and cannot meet the testing requirements of existing intelligent speed limit systems for automobiles. Summary of the Invention

[0006] The purpose of this invention is to address the technical deficiencies of existing technologies by providing a movable, foldable traffic sign support device for testing intelligent speed limit systems for automobiles.

[0007] Therefore, the present invention provides a movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles, which includes a base, a first support rod, a second support rod, a third support rod, a speed limit sign fixing structure, and a speed limit sign.

[0008] The upper end of the base is fitted with the lower end of the first vertically distributed support rod;

[0009] The upper end of the first support rod is sleeved onto the lower end of the vertically distributed second support rod;

[0010] The upper end of the second support rod is hinged to the lower end of the third support rod;

[0011] The upper end of the third support rod is equipped with two speed limit sign fixing structures with adjustable vertical spacing;

[0012] The front side of the fixing structure for the two speed limit signs is used to fix and connect the speed limit signs.

[0013] As can be seen from the technical solution provided by the present invention above, compared with the prior art, the present invention provides a movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles. Its design is scientific. Through multiple detachable support rods and a certain number of pins, slots, and bolts, the support device can be disassembled, folded, moved, and adapted to the installation of speed limit signs of various sizes. It has good compatibility with speed limit signs of various sizes and can quickly and reliably assist in the setup of intelligent speed limit system test scenarios, which has significant practical significance.

[0014] The traffic sign support device provided by this invention can realize the flexible and rapid placement of speed limit signs, break through site limitations, and thus significantly improve the overall efficiency of the test. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles, provided by the present invention, when viewed from the rear.

[0016] Figure 2 A simplified front view of a movable, foldable traffic sign support device for testing intelligent speed limit systems for automobiles, provided by the present invention.

[0017] Figure 3 A three-dimensional structural diagram of the base in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0018] Figure 4 A side view of the base in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0019] Figure 5 A side view of the first support rod in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0020] Figure 6 A three-dimensional structural diagram of the first support rod in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0021] Figure 7 A side view of the second support rod in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0022] Figure 8 A three-dimensional structural diagram of the second support rod in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0023] Figure 9 A side view of the third support rod in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0024] Figure 10 A three-dimensional structural diagram of the third support rod in a movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0025] Figure 11 The three-dimensional exploded structure diagram of the speed limit sign positioning structure in the movable foldable traffic sign support device for testing an intelligent speed limit system for automobiles provided by the present invention.

[0026] In the diagram, 1 is the base, 2 is the first support rod 2, 3 is the second support rod, 4 is the third support rod, and 5 is the fixing structure for the speed limit sign.

[0027] 6 is the pull rope, 7 is the winch, 8 is the positioning structure for the speed limit sign, and 9 is the speed limit sign. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] See Figures 1 to 11 The present invention provides a movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles, including a base 1, a first support rod 2, a second support rod 3, a third support rod 4, a speed limit sign fixing structure 5, and a speed limit sign 9.

[0033] The upper end of the base 1 is fitted with the lower end of the first vertically distributed support rod 2;

[0034] The upper end of the first support rod 2 is sleeved onto the lower end of the vertically distributed second support rod 3;

[0035] The upper end of the second support rod 3 is hinged to the lower end of the third support rod 4;

[0036] At the upper end of the third support rod 4, there are two speed limit sign fixing structures 5 with adjustable vertical spacing (i.e., vertical span);

[0037] The front side of the two speed limit sign fixing structures 5 is used to fix and connect the speed limit sign 9.

[0038] In this invention, specifically, the base 1 includes a base 10 and a central support column 12;

[0039] The central support column 12 is located at the top center of the base 10;

[0040] The lower end of the first support rod 2 is inserted into the central support column 12;

[0041] In specific implementation, a horizontally penetrating central support column pin hole 13 is provided on the upper side wall of the central support column 12;

[0042] The lower end of the first support rod 2 is provided with a first support rod pin through hole 220 at a position corresponding to the central support column pin hole 13;

[0043] The first support rod 2 is fixedly connected to the central support column 12 of the base 1 by the first pin 100;

[0044] The first pin 100 passes horizontally through the pin hole 13 of the central support column and is then inserted into the pin through hole 220 of the first support rod.

[0045] It should be noted that the central support column pin hole 13 and the corresponding first section support rod pin through hole 220 are used to insert the first pin 100, thereby achieving a fixed connection between the central support column 12 and the lower end of the first section support rod 2.

[0046] In practice, a pair of base handles 11 are provided on the top of the base 10.

[0047] It should be noted that the base 1 is machined as a whole and is equipped with a pair of base handles 11 that are fixed to the base base 10 by nuts for easy handling. It can also be equipped with a certain number of iron counterweights 16, which also have integrated handles. The bottom is flat, so it is easy to place on the upper surface of the base base 10.

[0048] The central support column 12 is cylindrical with an opening at the top for connecting the first support rod 2, and has a central support column pin hole 13 for fixing to the first support rod 2.

[0049] In specific implementation, two symmetrically distributed central support column positioning keys 14 are provided at the top opening edge of the central support column 12;

[0050] The first support rod 2 has two first support rod positioning grooves 20 at positions corresponding to the two central support column positioning keys 14;

[0051] The central support column positioning key 14 is matched and connected with the first section support rod positioning groove 20.

[0052] It should be noted that a pair of central support column positioning keys 14 are left at the top opening edge of the central support column 12, which are used to match the first support rod positioning groove 20 on the first support rod 2. The shape and size of the central support column positioning keys 14 and the first support rod positioning groove 20 are matched accordingly, thereby achieving positioning.

[0053] In practice, the top plane of the base 10 is connected to the central support column 12 by four reinforcing ribs 15 to lower the center of gravity of the base 1 and strengthen the overall structural strength of the base 1.

[0054] In this invention, specifically, the first support rod 2 includes an upper section 21 and a lower section 22.

[0055] The upper section 21 of the first support rod is located at the top of the lower section 22 of the first support rod, and the two are located on the same central axis.

[0056] The diameter of the upper section 21 of the first support rod is larger than the diameter of the lower section 22 of the first support rod;

[0057] Two first-segment support rod positioning grooves 20 are provided at the bottom edge of the upper section 21 of the first-segment support rod.

[0058] In practice, the upper section 21 of the first support rod and the lower section 22 of the first support rod are integrally formed.

[0059] In practice, the upper section 21 of the first support rod is located at the lower section 22 of the first support rod, and consists of two hollow cylindrical metal tubes with different outer diameters.

[0060] In specific implementation, the lower section 22 of the first support rod is provided with a first support rod pin through hole 220 at a position corresponding to the central support column pin hole 13;

[0061] The lower section 22 of the first support rod 2 is fixedly connected to the central support column 12 of the base 1 by the first pin 100.

[0062] The first pin 100 passes horizontally through the central support column pin hole 13 on the central support column 12 and is then inserted into the first support rod pin through hole 220.

[0063] It should be noted that the central support column pin hole 13 on the central support column 12 of the base 1 is used to insert the first pin 100. The lower part 22 of the first support rod with a smaller outer diameter is sleeved with the central support column 12 of the base 1 and fixed by the first pin 100.

[0064] In specific implementation, the upper side wall of the upper section 21 of the first support rod is provided with a first support rod pin hole 211;

[0065] It should be noted that the upper part 21 of the first support rod with a larger outer diameter is the main support structure, and the part near the upper end has a first support rod pin hole 211 for fixing to the second support rod 3.

[0066] Two symmetrically distributed first-segment support rod positioning keys 212 are provided at the top opening edge of the upper section 21 of the first-segment support rod.

[0067] The second support rod 3 has two second support rod positioning grooves 30 at positions corresponding to the two first support rod positioning keys 212;

[0068] The first support rod positioning key 212 is matched and connected to the second support rod positioning groove 30.

[0069] It should be noted that a pair of first-segment support rod positioning keys 212 are left at the top opening edge of the upper section 21 of the first-segment support rod, which are used to match the second-segment support rod positioning groove 30 on the second-segment support rod 3. The shape and size of the first-segment support rod positioning keys 212 and the second-segment support rod positioning groove 30 are matched accordingly, thereby achieving positioning.

[0070] In terms of specific implementation, a central opening groove 213 is provided in the middle section of the side wall of the upper part 21 of the first support rod to facilitate the handling and installation by the staff.

[0071] In this invention, specifically, the second support rod 3 includes an upper section 31 and a lower section 32.

[0072] The upper section 31 of the second support rod is located at the top of the lower section 32 of the second support rod, and the two are located on the same central axis.

[0073] The diameter of the upper section 31 of the second support rod is larger than the diameter of the lower section 32 of the second support rod;

[0074] Two second-section support rod positioning grooves 30 are provided at the bottom edge of the upper section 31 of the second-section support rod.

[0075] In practice, the upper section 31 of the second support rod and the lower section 32 of the second support rod are integrally formed.

[0076] In practice, the upper section 31 and the lower section 32 of the second support rod are two hollow cylindrical metal tubes with different outer diameters.

[0077] In specific implementation, the lower section 32 of the second support rod is provided with a second support rod pin through hole 320 at a position corresponding to the first support rod pin hole 211 on the upper side wall of the upper section 21 of the first support rod;

[0078] The lower section 32 of the second support rod is fixedly connected to the upper section 21 of the first support rod by the second pin 200.

[0079] The second pin 200 passes horizontally through the first support rod pin hole 211 and is then inserted into the second support rod pin through hole 320.

[0080] It should be noted that, for the second support rod, the lower part 32 of the second support rod with a smaller outer diameter is sleeved with the upper part 21 of the first support rod and fixed by the second pin 200.

[0081] In specific implementation, the upper part 31 of the second support rod 3 has two second support rod positioning grooves 30 at positions corresponding to the two first support rod positioning keys 212 on the upper part 21 of the first support rod;

[0082] The first support rod positioning key 212 is matched and connected to the second support rod positioning groove 30.

[0083] It should be noted that the first support rod positioning key 212 on the upper part 21 of the first support rod corresponds to the shape and size of the second support rod positioning groove 30 on the lower part 32 of the second support rod of the second support rod 3, thereby achieving positioning.

[0084] In specific implementation, a support rod receiving groove 33 is provided at the upper end of the upper section 31 of the second support rod;

[0085] The upper ends of the left and right side walls of the support rod receiving groove 33 are respectively provided with a horizontally penetrating second section support rod bolt hole 331, and the two second section support rod bolt holes are symmetrically distributed.

[0086] The lower ends of the left and right side walls of the support rod receiving groove 33 are respectively provided with a horizontally penetrating second section support rod pin hole 332, and the two second section support rod pin holes 332 are symmetrically distributed.

[0087] For specific implementation details, see [link to implementation details]. Figure 8 As shown, the front sidewall of the support rod receiving groove 33 is higher than the rear sidewall of the support rod receiving groove 33.

[0088] It should be noted that for the second support rod 3, the upper section 31 with a larger outer diameter is the main support structure. The top of this section has bolt holes for hinged connection with the third support rod 4 and pin holes for fixing. The front cylinder of the upper section 31 protrudes above the back (i.e., the front sidewall of the support rod receiving groove 33 is higher than the rear sidewall of the groove), ensuring that the third support rod 4, placed in the support rod receiving groove 3, can fold forward in one direction.

[0089] In this invention, specifically, the third support rod 4 is a hollow square metal rod;

[0090] In specific implementation, at the lower end of the third support rod 4, a horizontally penetrating third support rod bolt hole 41 is provided at the position corresponding to the second support rod bolt hole 331 on the second support rod 3;

[0091] At the lower end of the third support rod 4, a horizontally penetrating third support rod pin hole 42 is provided at a position corresponding to the second support rod pin hole 332 on the second support rod 3.

[0092] The lower end of the third support rod 4 is hinged to the upper end of the second support rod 3 by the first bolt 400;

[0093] After the first bolt 400 passes through the second support rod bolt hole 331 on the second support rod 3 and the third support rod bolt hole 41 at the lower end of the third support rod 4, it is threadedly connected to a first nut.

[0094] The lower end of the third support rod 4 is fixedly connected to the upper end of the second support rod 3 via the third pin 300;

[0095] The third pin 300 passes horizontally through the second support rod pin hole 332 and the third support rod pin hole 42.

[0096] In terms of specific implementation, the upper end of the third support rod 4 is provided with two pairs of through limiting grooves 43 that are spaced vertically and distributed vertically.

[0097] Each pair of through-limiting grooves 43 is connected to a speed limit sign fixing structure 5;

[0098] The front side of the two speed limit sign fixing structures 5 is used to fix and connect the speed limit sign 9;

[0099] It should be noted that the lower part of the third support rod 4 has bolt holes for hinge connection with the second support rod 3 and pin holes for fixing, and the upper part has two pairs of transverse through-limiting grooves 43 for connecting and fixing the speed limit sign fixing device 5 and the third support rod 4.

[0100] In practice, each speed limit sign fixing structure 5 is fixedly connected to the through-limiting groove at the upper end of the third support rod 4 by the second bolt 500 and the second nut.

[0101] In specific implementation, each speed limit sign fixing structure 5 includes a square bracket 51 and a snap-fit ​​block 52;

[0102] Each square bracket 51 is fitted onto the upper outer side of the third support rod 4;

[0103] On the front side of each frame bracket 51, a horizontally distributed snap-fit ​​block 52 is fixedly installed (e.g., welded).

[0104] On the back of the speed limit sign 9, there are card slots 91 at positions corresponding to each card block 52;

[0105] The two locking blocks 52 are locked into the two locking slots 91.

[0106] In practice, the second bolt 500 passes through the pre-drilled hole on the frame bracket 51 and the through-limiting groove at the upper end of the third support rod 4, and is then threadedly fixed to the second nut, thereby fixing the speed limit sign fixing structure 5 to the upper end of the third support rod 4.

[0107] It should be noted that the through-limiting groove 43 is vertically distributed to ensure that the vertical span (i.e., vertical distance) of the two speed limit sign fixing structures 5 is adjustable, thereby adapting to speed limit signs 9 with different slot positions.

[0108] It should be noted that the square bracket 51 is a metal bracket, and the snap-fit ​​block 52 is an I-shaped metal plate. The square bracket 51 and the third support rod 4 are adjustable up and down, and are fixed in place by the second bolt 500 passing through the limiting groove 43 of the third support rod 4. The distance between the two speed limit sign fixing structures 5 is adjustable.

[0109] The U-shaped slot 91 on the speed limit sign 9 is inserted into the locking block 52 (I-shaped metal plate) to achieve vertical fixation and force support for the speed limit sign 9.

[0110] In practice, the two ends of the card slot 91 are respectively positioned laterally by a speed limit sign positioning structure 8;

[0111] Each speed limit sign positioning structure 8 (i.e. tensioning bolt and nut structure) includes a square head bolt 8-1, a circular clip 8-3, a spring 8-2, and a tensioning nut 8-4.

[0112] The speed limit sign 9 has a square head bolt through hole at each of the left and right ends of the slot 91 located at the top;

[0113] The speed limit sign 9 has through holes for the sign at positions corresponding to the through holes of each square head bolt;

[0114] The bolt shank of the square head bolt 8-1, after passing through the through hole of the signboard and the through hole of the square head bolt in sequence, is threadedly fixed to a loose nut 8-4;

[0115] In practice, the square head bolt 8-1 has a spring 8-2 and a circular clamping piece 8-3 fitted on its bolt shank;

[0116] Spring 8-2 is located in slot 91;

[0117] The clamping piece 8-3 is located between the rear side of the slot 91 and the front side of the tightening nut 8-4, that is, it is clamped by the slot 91 and the tightening nut 8-4.

[0118] It should be noted that, in this invention, the lateral positioning of the speed limit sign 9 is achieved by the speed limit sign positioning structure 8 (i.e., the tensioning bolt and nut structure), which is specifically composed of a square head bolt 8-1 inserted into the slot, a circular clip 8-3, a spring 8-2, and a tensioning nut 8-4 for rotational adjustment.

[0119] In this invention, specifically, the movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles also includes a rope structure.

[0120] The rope structure is used to pull up (i.e. raise) or lower the third support rod 4 and the speed limit sign;

[0121] It should be noted that after the third support rod 4 and the speed limit sign are pulled up (i.e. raised), the staff will then use the third pin 300 to fix the third support rod 4 and the second support rod 3 in place; when lowering, the third support rod 4, which is placed in the support rod receiving groove 33 at the upper end of the second support rod 3 and is hinged to the second support rod 3, will fold forward in one direction.

[0122] In terms of specific implementation, the rope structure includes a rope 6, a guide pulley 3-1, a reversing pulley 3-2, and a winch 7;

[0123] A rope connecting ring 44 is provided on the upper rear side of the third section support rod 4.

[0124] The upper end of the second support rod 3 (specifically the upper part 31 of the second support rod) is provided with a winch 7, a reversing pulley 3-2 and a guide pulley 3-1 from top to top.

[0125] The rope connecting ring 44 is located directly above the guide pulley 3-1;

[0126] The lower end of the pull rope 6 is wound around the winch 7;

[0127] The upper end of the pull rope 6, after being wound from bottom to top through the reversing pulley 3-2 and the guide pulley 3-1, is connected to the pull rope connecting ring 44 (for example, the upper end of the pull rope 66 is tied to the pull rope connecting ring 44).

[0128] In specific implementation, the guide pulley 3-1 is a pulley with a longitudinally distributed axial direction, specifically a guide pulley with bearings;

[0129] The reversing pulley 3-2 is a pulley with a transverse axial distribution, specifically a reversing pulley with bearings.

[0130] In terms of specific implementation, a directional pulley mounting bracket and a guide pulley mounting bracket are welded onto the second support rod 3;

[0131] The directional pulley 3-2 and the guide pulley 3-1 are pivotally (rotatably connected) on the directional pulley mounting bracket and the guide pulley mounting bracket, respectively.

[0132] In practice, a winch support column is provided at the upper end of the second support rod 3 (specifically, the upper part 31 of the second support rod);

[0133] A winch 7 is pivotally (rotatably connected) on the winch support column.

[0134] In terms of specific implementation, the pull rope 6 is a high-strength pull rope.

[0135] It should be noted that, for the present invention, when installing and raising a new speed limit sign 9 on the device of the present invention, firstly, the speed limit sign 9 is connected to the third support rod 4 through the speed limit sign fixing structure 5, and then, by tightening the winch 7, the third support rod 4 and the speed limit sign 9 installed thereon are pulled up by the pull rope 6, and the third support rod 4 and the second support rod 3 are fixedly connected by the third pin 300.

[0136] When it is necessary to fold and place the device of the present invention, that is, to fold and place the speed limit sign 9, remove the third pin 300 that is fixed between the third support rod 4 and the second support rod 3, and then slowly loosen the winch 7 and release the pull rope 6, so that the third support rod 4, which is hinged to the second support rod 3, is folded forward in one direction, that is, the third support rod 4 and the speed limit sign 9 installed on it are finally folded up.

[0137] Similarly, when replacing another speed limit sign 9, the third support rod 4 and the speed limit sign 9 installed on it can be folded and raised through the pull rope structure, so as to quickly and conveniently replace and disassemble the speed limit sign 9.

[0138] To better understand the technical solution of the present invention, the working principle of the present invention will be explained below with reference to specific embodiments.

[0139] Example

[0140] This invention provides a movable, foldable traffic sign support device for testing intelligent speed limit systems in automobiles. The specific implementation process is as follows, taking the test scenario of the intelligent speed limit warning test in the recommended national standard "Performance Requirements and Test Methods for Intelligent Speed ​​Limit Systems of Automobiles (Draft for Approval)" as an example:

[0141] I. Intelligent speed limit reminder.

[0142] In accordance with the requirements of GB 5768.5 "Road Traffic Signs and Markings Part 5: Speed ​​Limits", speed limit signs 9 were installed on the test lane, and the vehicle was tested at speeds of 50, 80, and 100 km / h. At least 2 seconds before the test, the test vehicle should be traveling at a speed (10±2) km / h higher than the speed limit on the speedometer within the test lane, moving at a constant speed towards the speed limit sign (i.e., speed limit sign 9). The test began when the front of the test vehicle was 100 meters away from the speed limit sign (i.e., speed limit sign 9), and ended 10 seconds after the front of the test vehicle had passed the speed limit sign (i.e., speed limit sign 9).

[0143] II. Pre-installation of the movable, foldable traffic sign support device for testing automotive intelligent speed limit systems. The specific process is as follows:

[0144] First, install the base handle 11 on the base 1;

[0145] Then, on the second support rod 3, a guide pulley 3-1 with bearings and a reversing pulley 3-2 with bearings are installed. A winch 7 is installed at the lower part of the second support rod 3. The winch 7 has a bearing between it and the fixed shaft (i.e., the winch support column) on the second support rod 3 to ensure rotational winding. After passing through the guide pulley 3-1, the pull rope 6 changes direction at the reversing pulley 3-2 and then winds around the winch 7, thus maintaining relative verticality in the vertical direction. The second support rod 3 and the third support rod 4 are connected by bolts (specifically the first bolt 400) and two nuts to ensure that the two support rods can be folded in one direction. One end of the pull rope is fixed to the pull rope fixing point (i.e., the pull rope connecting ring 44) of the third support rod 4, and the other end is connected to the winch 7.

[0146] Then, the two speed limit sign fixing structures 5 are installed on the upper end of the third support rod 4, and are pre-installed with bolts, with the tightness being loose.

[0147] Then, the lateral positioning structure of the sign (i.e., the speed limit sign positioning structure 8) is pre-installed. The spring is put on the bolt rod of the square head bolt 8-1, and then the circular clip 8-3 is put into the bolt and pressed on the other end of the spring. Finally, the tension nut for rotation adjustment is screwed on, but not tightened.

[0148] III. Scene arrangement of traffic signs.

[0149] First, select the installation location of the sign support device of the present invention. In a place where the test vehicle has sufficient acceleration and stabilization distance, select one side of the road and arrange the base 1 of the traffic sign support device, with the pin hole facing the vertical direction of the sign. Move and adjust the position and orientation of the base 1 using the base handle 11 on the base 1. After placement, place two counterweights on the upper surface of the base to ensure the stability of the base 1.

[0150] Then, with the smaller outer diameter end of the first support rod 2 (i.e., the lower section 22 of the first support rod) facing downwards, it is fitted into the cylindrical hole of the central support column 12 of the base 1. During installation, the first support rod 2 is rotated to ensure that it is positioned with the base 1 through the positioning groove on it. The middle section of the first support rod 2 has a central opening groove 213, which makes it easy for the operator to adjust and rotate the support rod by hand. After the installation is completed, the positioning pin (i.e., the first pin 100) is passed through the positioning holes of the base 1 and the first support rod 2 to complete the fixation.

[0151] Then, with the smaller outer diameter end (lower section 32 of the second support rod) of the pre-assembled structure (including the second support rod 3, the third support rod 4, and the two speed limit sign fixing structures 5) facing downwards, insert it into the first support rod 2. Rotate the second support rod 3 to ensure that it is positioned with the first support rod 2 through the positioning groove. During this process, ensure that the front of the speed limit sign 9 faces the direction of oncoming traffic. If the opposite is true, rotate the second support rod 3 180°. After installation, pass the positioning pin (i.e., the second pin 200) through the positioning holes of the first support rod 2 and the second support rod 3 to complete the fixing.

[0152] Then, install the 50km / h speed limit sign 9, adjust the vertical distance between the two speed limit sign fixing structures 5, insert the I-shaped plate (i.e., the snap-fit ​​block 52) into the sign's slot 91, and tighten the speed limit sign fixing structure 5 on the third support rod 4 with fastening bolts (i.e., the second bolt 500).

[0153] Then, insert the two pre-installed sign horizontal positioning structures (i.e., speed limit sign positioning structures 8) into the left and right ends of the slot 91 located above. After the speed limit sign positioning structures 8 at both ends of the horizontal direction come into contact with the I-shaped plate (i.e., the snap-fit ​​block 52) (i.e., the position of the snap-fit ​​block 52 is constrained by the speed limit sign positioning structure 8), fix the sign horizontal positioning structure by rotating the loosening nut to ensure that the speed limit sign 9 cannot be laterally displaced.

[0154] Then, tighten the winch 7 counterclockwise to raise the third support rod 4 and the speed limit sign 9. After they are fully erected, pass the positioning pin (i.e., the third pin 300) through the positioning holes of the second support rod 3 and the third support rod 4 to complete the fixing.

[0155] Then, based on existing vehicle testing specifications, we began testing the 50km / h scenario.

[0156] After the initial test, a test at 80 km / h is required. Therefore, the 80 km / h speed limit sign 9 is replaced. Remove the locating pins from the second support rod 3 and the third support rod 4, push the sign to fold, and slowly loosen the winch 7 connected to the pull rope, ensuring that the third support rod 4 with the speed limit sign 9 folds slowly. After complete folding, loosen the nuts on the two lateral positioning structures (i.e., the speed limit sign positioning structure 8) and pull them out of the slots. Then, remove the 50 km / h speed limit sign 9. Loosen the fastening bolts on the third support rod 4 to adjust the vertical distance between the two speed limit sign fixing structures 5, ensuring that the vertical distance between the two speed limit sign fixing structures 5 matches the vertical distance between the two slots distributed vertically on the back of the 80 km / h speed limit sign 9. Repeat the above steps for installation, tightening, lateral positioning, raising, and fixing.

[0157] Then, based on existing vehicle testing specifications, testing began on the 80km / h scenario.

[0158] After the test is completed, replace the 100km / h speed limit sign 9. The specific operating steps are as described above.

[0159] Compared with existing technologies, the movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles provided by this invention has the following advantages:

[0160] 1. The traffic sign support device of the present invention can be quickly disassembled and installed, and the whole device is movable;

[0161] 2. The sign can be installed quickly and easily by using the foldable third support rod 4 and the slot on the speed limit sign 9.

[0162] 3. The height-adjustable sign mounting slot (i.e., through-limit slot 43) can accommodate signs of different sizes, improve compatibility with various models and sizes of signs, expand the scope of use, and improve testing efficiency;

[0163] 4. The support rods are reliably fixed to each other and to the base 1 by pins. The connection device is easy to install and maintain, which can effectively reduce the test cost.

[0164] In summary, compared with existing technologies, the movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles provided by this invention is scientifically designed. Through multiple detachable support rods and a certain number of pins, slots, and bolts, it can realize the disassembly, folding, and movement of the support device and the adaptation and installation of speed limit signs of various sizes. It has good compatibility with speed limit signs of various sizes and can quickly and reliably assist in the setup of intelligent speed limit system test scenarios, which has significant practical significance.

[0165] The traffic sign support device provided by this invention can realize the flexible and rapid placement of speed limit signs, break through site limitations, and thus significantly improve the overall efficiency of the test.

[0166] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A movable, foldable traffic sign support device for testing intelligent speed limit systems for automobiles, characterized in that, It includes a base (1), a first support rod (2), a second support rod (3), a third support rod (4), a speed limit sign fixing structure (5), a speed limit sign (9), and a rope structure; Among them, the upper end of the base (1) is sleeved with the lower end of the vertically distributed first section of support rod (2); The upper end of the first support rod (2) is sleeved onto the lower end of the vertically distributed second support rod (3); The upper end of the second support rod (3) is hinged to the lower end of the third support rod (4); The upper end of the third support rod (4) is equipped with two speed limit sign fixing structures (5) with adjustable vertical spacing. The front side of the two speed limit sign fixing structures (5) is used to fix and connect the speed limit sign (9); The second support rod (3) includes the upper part (31) of the second support rod and the lower part (32) of the second support rod; The upper section (31) of the second support rod is located at the top of the lower section (32) of the second support rod, and the two are located on the same central axis. The diameter of the upper section (31) of the second support rod is larger than the diameter of the lower section (32) of the second support rod; Two second support rod positioning grooves (30) are provided at the bottom edge of the upper part (31) of the second support rod. The upper part (31) of the second support rod (3) has two second support rod positioning grooves (30) at positions corresponding to the two first support rod positioning keys (212) on the upper part (21) of the first support rod. The first support rod positioning key (212) is matched and connected with the second support rod positioning groove (30); The upper end of the upper section (31) of the second support rod is provided with a support rod receiving groove (33). The upper ends of the left and right side walls of the support rod receiving groove (33) are respectively provided with a horizontally penetrating second section support rod bolt hole (331), and the two second section support rod bolt holes are symmetrically distributed; The lower ends of the left and right side walls of the support rod receiving groove (33) are respectively provided with a horizontally penetrating second section support rod pin hole (332), and the two second section support rod pin holes (332) are symmetrically distributed; The front sidewall of the support rod receiving groove (33) is higher than the rear sidewall of the support rod receiving groove (33) to ensure that the third support rod (4) placed in the support rod receiving groove (33) folds forward in one direction; A rope structure is used to raise or lower the third support rod (4) and the speed limit sign; The rope structure includes a rope (6), a guide pulley (3-1), a reversing pulley (3-2), and a winch (7); The upper rear side of the third support rod (4) is provided with a pull rope connecting ring (44). The upper end of the second support rod (3) is provided with a winch (7), a reversing pulley (3-2) and a guide pulley (3-1) from top to top. The rope connecting ring (44) is located directly above the guide pulley (3-1); The lower end of the pull rope (6) is wound around the winch (7); The upper end of the pull rope (6) is wound from bottom to top through the reversing pulley (3-2) and the guide pulley (3-1) and then connected to the pull rope connecting ring (44).

2. The movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles as described in claim 1, characterized in that, The base (1) includes a base base (10) and a central support column (12); The central support column (12) is located at the top center of the base (10); The lower end of the first support rod (2) is inserted into the central support column (12); The upper side wall of the central support column (12) is provided with a horizontally penetrating central support column pin hole (13). The lower end of the first support rod (2) is provided with a first support rod pin through hole (220) at a position corresponding to the central support column pin hole (13). The first support rod (2) is fixedly connected to the central support column (12) of the base (1) by the first pin (100); After the first pin (100) passes horizontally through the pin hole (13) of the central support column, it is inserted into the pin through hole (220) of the first section support rod.

3. The movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles as described in claim 2, characterized in that, A pair of base handles (11) are provided on the top of the base base (10); The top plane of the base (10) is connected to the central support column (12) by four reinforcing ribs (15); Two central support column positioning keys (14) are symmetrically distributed at the top opening edge of the central support column (12). The first support rod (2) has two first support rod positioning slots (20) at the positions corresponding to the two center support column positioning keys (14). The central support column positioning key (14) is matched and connected with the first section support rod positioning groove (20).

4. The movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles as described in claim 1, characterized in that, The first support rod (2) includes the upper part (21) and the lower part (22) of the first support rod. The upper section (21) of the first support rod is located at the top of the lower section (22) of the first support rod, and the two are located on the same central axis; The diameter of the upper section (21) of the first support rod is larger than the diameter of the lower section (22) of the first support rod; Two first-section support rod positioning grooves (20) are provided at the bottom edge of the upper part (21) of the first-section support rod.

5. The movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles as described in claim 4, characterized in that, The lower section (22) of the first support rod is provided with a first support rod pin through hole (220) at a position corresponding to the central support column pin hole (13). The lower section (22) of the first support rod (2) is fixedly connected to the central support column (12) of the base (1) by the first pin (100); The first pin (100) passes horizontally through the central support column pin hole (13) on the central support column (12) and then is inserted into the first section support rod pin through hole (220); The upper side wall of the upper section (21) of the first support rod is provided with a first support rod pin hole (211). Two symmetrically distributed first-segment support rod positioning keys (212) are provided at the top opening edge of the upper section (21) of the first-segment support rod. The second support rod (3) has two second support rod positioning slots (30) at positions corresponding to the two first support rod positioning keys (212). The first support rod positioning key (212) is matched and connected with the second support rod positioning groove (30); The lower section of the second support rod (32) has a second support rod pin through hole (320) at a position corresponding to the first support rod pin hole (211) on the upper side wall of the upper section of the first support rod (21). The lower section (32) of the second support rod is fixedly connected to the upper section (21) of the first support rod by the second pin (200); The second pin (200) passes horizontally through the first support rod pin hole (211) and then is inserted into the second support rod pin through hole (320).

6. The movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles as described in claim 1, characterized in that, The third support rod (4) is a hollow square rod; At the lower end of the third support rod (4), a horizontally penetrating third support rod bolt hole (41) is provided at a position corresponding to the second support rod bolt hole (331) on the second support rod (3). The lower end of the third support rod (4) is provided with a horizontally penetrating third support rod pin hole (42) at the position corresponding to the second support rod pin hole (332) on the second support rod (3). The lower end of the third support rod (4) is hinged to the upper end of the second support rod (3) by the first bolt (400); After the first bolt (400) passes through the second support rod bolt hole (331) on the second support rod (3) and the third support rod bolt hole (41) at the lower end of the third support rod (4), it is threadedly connected to a first nut. The lower end of the third support rod (4) is fixedly connected to the upper end of the second support rod (3) by the third pin (300); The third pin (300) passes horizontally through the second support rod pin hole (332) and the third support rod pin hole (42). The upper end of the third support rod (4) is provided with two pairs of through-limiting grooves (43) that are spaced apart vertically and distributed vertically. Each pair of through-limiting grooves (43) is connected to a speed limit sign fixing structure (5); The front side of the two speed limit sign fixing structures (5) is used to fix and connect the speed limit sign (9).

7. The movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles as described in claim 6, characterized in that, Each speed limit sign fixing structure (5) is fixedly connected to the through limiting groove at the upper end of the third support rod (4) by the second bolt (500) and the second nut; Each speed limit sign fixing structure (5) includes a square bracket (51) and a snap-fit ​​block (52); Each square bracket (51) is fitted onto the upper outer side of the third support rod (4); On the front side of each square bracket (51), a horizontally distributed snap-fit ​​block (52) is fixedly installed. The back of the speed limit sign (9) has a card slot (91) at a position corresponding to each card block (52); The two snap-fit ​​blocks (52) are snap-fitted into the two slots (91); The second bolt (500) passes through the pre-drilled hole on the square frame bracket (51) and the through-limiting groove at the upper end of the third support rod (4), and is then threadedly fixed to the second nut.

8. The movable foldable traffic sign support device for testing intelligent speed limit systems for automobiles as described in claim 7, characterized in that, The two ends of the card slot (91) are laterally positioned by a speed limit sign positioning structure (8); Each speed limit sign positioning structure (8) includes a square head bolt (8-1), a circular clip (8-3), a spring (8-2), and a tightening nut (8-4). The speed limit sign (9) has a square head bolt through hole at each of the left and right ends of the slot (91) located at the top; The speed limit sign (9) has a sign through hole at the position corresponding to each square head bolt through hole; The bolt shank of the square head bolt (8-1) passes through the through hole of the signboard and the through hole of the square head bolt in sequence, and is then threadedly fixed to a nut (8-4); The square head bolt (8-1) has a spring (8-2) and a circular clip (8-3) fitted on its bolt shank. The spring (8-2) is located in the slot (91); The clip (8-3) is located between the slot (91) and the tightening nut (8-4).

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