Active anti-collision height-limiting portal frame system

Abstract

The invention relates to an active anti-collision height-limiting portal frame system which comprises a height-limiting portal frame, a first vertical rod and an intelligent system. The intelligent system comprises a controller, a detection device electrically connected with the controller, a first recognition device, a display screen and a broadcasting device. A first vertical rod is arranged on the lateral front portion of the height limiting door frame, a first recognition device on the first vertical rod can recognize license plate number information of an automobile, a detection device detects automobile data from the side of the automobile and sends the automobile data to a controller, and the controller calculates automobile height information according to the automobile data. Judging whether the vehicle height information is greater than or equal to a first preset threshold value or not; according to the active anti-collision height-limiting portal frame system, due to the fact that the first vertical rod and the warning mark are arranged on the lateral front portion of the height-limiting portal frame in advance for height-limiting early warning, long braking response time is reserved for an automobile driver, and meanwhile the first recognition device, the detection device, the display screen and the broadcasting device can actively give an alarm for an automobile exceeding the height limit; therefore, the active anti-collision effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of road traffic safety protection equipment, and in particular to an active anti-collision height-limiting gantry system. Background Art

[0002] In recent years, with the large-scale construction of transportation facilities such as expressways, urban expressways, high-speed railways, and tunnels, the number of grade-separated intersections has increased rapidly. In addition, with the increase in the number of motor vehicles and the further improvement of urban construction, urban indoor parking facilities have become increasingly popular, and the use of height-limited gantries for protective purposes has become increasingly common.

[0003] Chinese patent document CN219527422U discloses a height-limiting gantry, comprising a horizontally arranged crossbeam; a first vertical beam, the bottom end of which is fixed on one side of the road, and the top end of the first vertical beam is detachably connected to one end of the crossbeam; a second vertical beam, the bottom end of which is fixed on the other side of the road, and the top end of the second vertical beam is detachably connected to the other end of the crossbeam; a plurality of first rubber tubes, which are horizontally arranged at a height limit of the vehicle, and the plurality of first rubber tubes are located below the crossbeam; and each first rubber tube is fixedly connected to the crossbeam through a plurality of second rubber tubes arranged vertically at intervals. The defects and shortcomings of the height-limiting gantry are as follows: (1) The height-limiting gantry passively buffers and consumes the energy of the vehicle collision through the first rubber tube and the second rubber tube, but the crossbeam, the first vertical beam and the second vertical beam still have too high structural rigidity and strength. When the height of the vehicle is too high and collides with the crossbeam, the crossbeam will cause the vehicle to be severely deformed, and may even cause serious injuries to the personnel in the vehicle. (2) When the crossbeam crosses multiple lanes, the gantry is likely to hinder the passage of vehicles after the collision, or even all lanes in both directions. (3) Since the height of the height-limiting gantry is fixed, the height-limiting gantry needs to be replaced when road conditions change, which results in material waste.

[0004] Therefore, there is an urgent need to provide an active anti-collision height-limiting gantry system that can prevent serious injuries to people in the vehicle. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an active anti-collision height-limiting gantry system, which solves the technical problem that the existing height-limiting gantry structure has excessive strength and rigidity, which may cause serious injuries to people in the vehicle when colliding with a vehicle.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] The embodiment of the present invention provides an active anti-collision height-limiting gantry system, comprising a height-limiting gantry, a vertical pole and an intelligent system, wherein the intelligent system comprises a controller, a detection device electrically connected to the controller, a first identification device, a display screen and a broadcasting device;

[0010] The height-limiting gantry spans the road, a display screen and a broadcasting device are arranged on the upper part of the height-limiting gantry, a pole one is arranged on the side and front of the height-limiting gantry, a detection device and a first identification device are arranged in the middle part of the pole one, and a warning sign is arranged on the upper end of the pole one;

[0011] The first recognition device can recognize the license plate number information of the car, the detection device detects the car data from the side of the car and sends the car data to the controller, the controller calculates the vehicle height information based on the car data, and determines whether the vehicle height information is greater than or equal to the first preset threshold: if so, the controller sends an alarm signal to the display screen and the broadcasting device, the display screen displays text alarm information, and the broadcasting device issues a voice prompt alarm; if not, the controller sends a standby message to the display screen and the broadcasting device.

[0012] Optionally, the detection device is a laser radar, which emits laser and receives reflected laser signals to obtain vehicle data, including a distance L between the laser radar and the vehicle, an angle θ between the laser beam contacting the roof and the horizontal direction, and an angle β between the laser beam contacting the bottom of the vehicle and the horizontal direction;

[0013] The laser radar sends the distance L between the laser radar and the car, the angle θ between the laser beam touching the roof and the horizontal direction, and the angle β between the laser beam touching the bottom of the car and the horizontal direction to the controller, and the controller calculates the car height information H=L*tanθ+L*tanβ.

[0014] Optionally, the number of the first pole is two, and the detection device includes a laser transmitter and a laser receiver electrically connected to the controller;

[0015] Two poles are fixedly arranged on both sides of the road, a laser transmitter is installed at the middle of one of the two poles corresponding to the height limit position, and a laser receiver is installed at the middle of the other pole corresponding to the height limit position;

[0016] The laser transmitter transmits a laser beam to the laser receiver: when the laser receiver does not receive the laser beam emitted by the laser transmitter, the laser receiver transmits a first detection signal to the controller, and the controller determines that the vehicle height information is greater than or equal to a first preset threshold; when the laser receiver receives the laser beam emitted by the laser transmitter, the laser receiver transmits a second detection signal to the controller, and the controller determines that the vehicle height information is less than the first preset threshold.

[0017] Optionally, there are two display screens, one of which displays the height limit of the active height-limiting gantry, and the other displays the vehicle license plate information of the car that cannot pass normally and safely.

[0018] Optionally, the road has multiple lanes, and the multiple lanes share a height-limiting gantry, and the height-limiting gantry also includes a moving mechanism and a second identification device;

[0019] A mobile mechanism is installed on the cross bar, and a display screen and a second identification device are installed on the mobile mechanism. The controller is electrically connected to the mobile mechanism and the second identification device respectively. The second identification device identifies the position information of vehicles that cannot pass normally and sends the position information of the vehicle to the controller. The controller sends a control instruction to the mobile mechanism according to the position information of the vehicle. The mobile mechanism can move the display screen along the length direction of the cross bar to the lane where the vehicle that cannot pass normally is located.

[0020] Optionally, the moving mechanism includes a fixed plate, a sliding plate, a rack and pinion drive assembly, and a servo motor;

[0021] A fixed plate is arranged along the length direction of the crossbar, a guide rail is arranged along the length direction of the fixed plate, a sliding seat capable of sliding along the guide rail is arranged at the bottom of the sliding plate, and a display screen and a second identification device are arranged on the upper surface of the sliding plate;

[0022] The fixed plate and the sliding plate are driven and connected via a rack and pinion drive assembly. The servo motor is fixedly mounted on the fixed plate. The output end of the servo motor is driven and connected to the rack and pinion drive assembly to transmit the driving force to the rack and pinion drive assembly. The rack and pinion drive assembly can drive the sliding plate to perform linear reciprocating motion along the guide rail.

[0023] Optionally, a shield extending forward is provided on the upper part of the display screen and the second identification device.

[0024] Optionally, it also includes a plurality of bases pre-buried in the ground, which are cast by concrete and are used to fix the second vertical pole or the first vertical pole.

[0025] Optionally, the height-limited portal frame also includes two splicing modules, and a splicing module can be selectively arranged at the connection between the two vertical poles and the cross bar. The lower end of the splicing module is connected to the upper end flange of the vertical pole two, and the upper end of the splicing module is connected to the end flange of the cross bar to adjust the height limit of the cross bar.

[0026] (III) Beneficial effects

[0027] The beneficial effects of the present invention are as follows: the active anti-collision height-limiting gantry system of the present invention comprises a height-limiting gantry, a pole one and an intelligent system, the intelligent system comprises a controller, a detection device electrically connected to the controller, a first identification device, a display screen and a broadcast device; the height-limiting gantry spans across the road, a display screen and a broadcast device are arranged on the upper part of the height-limiting gantry, the pole one is arranged on the side front of the height-limiting gantry, a detection device and a first identification device are arranged in the middle part of the pole one, and a warning sign is arranged on the upper end of the pole one; the first identification device can identify the license plate number information of the car, the detection device detects the car data from the side of the car, and sends the car data to the controller, the controller calculates the vehicle height information according to the car data, and determines whether the vehicle height information is greater than or equal to At the first preset threshold: if yes, the controller sends an alarm signal to the display screen and the broadcasting device, the display screen displays a text alarm message, and the broadcasting device issues a voice prompt alarm; if not, the controller sends a standby message to the display screen and the broadcasting device. Compared with the prior art, it sets a vertical pole and a warning sign in front of the height limit gantry in advance to carry out height limit warning, which reserves a longer braking reaction time for the car driver to prevent the car driver from being unable to brake due to insufficient reaction. At the same time, the first recognition device recognizes the license plate number information of the car, the detection device and the controller detect and calculate the vehicle height information of the car, and finally actively alarms the car that exceeds the height limit and cannot pass safely through the display screen and the broadcasting device, so as to play a role of active collision avoidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a side view schematic diagram of Embodiment 1 of the active anti-collision height-limiting gantry system of the present invention;

[0029] Figure 2 It is another side view schematic diagram of the embodiment 1 of the active anti-collision height-limiting gantry system of the present invention, wherein a car is passing by a vertical pole;

[0030] Figure 3 for Figure 2 A schematic diagram of a pole 1 and a front view of a car;

[0031] Figure 4 It is a schematic diagram of a height-limiting gantry and a front view of a car in Example 1 of the active anti-collision height-limiting gantry system of the present invention;

[0032] Figure 5 for Figure 4 An enlarged schematic diagram of the height-limited door frame at the second upright pole and the splicing module;

[0033] Figure 6 This is a schematic front view of a pole 1 and a car in Example 2 of the active anti-collision height-limiting gantry system of the present invention.

[0034] [Description of Reference Numerals]

[0035] 1: Pole 2; 2: Crossbar; 3: Base; 4: Splicing module; 5: Pole 1; 6: Detection device; 61: Laser transmitter; 62: Laser receiver; 7: First recognition device; 8: Warning sign; 9: Moving mechanism; 10: Display screen; 11: Second recognition device; 12: Shield. DETAILED DESCRIPTION

[0036] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 It should be noted that the "front" of the active anti-collision height-limiting gantry system of this embodiment is the direction of the oncoming vehicle.

[0037] Embodiment 1:

[0038] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides an active anti-collision height-limiting gantry system, including a height-limiting gantry, a vertical pole 5, and an intelligent system, wherein the intelligent system includes a controller, a detection device 6 electrically connected to the controller, a first identification device 7, a display screen 10, and a broadcasting device;

[0039] The height-limiting gantry spans the road, a display screen 10 and a broadcasting device are arranged on the upper part of the height-limiting gantry, a vertical pole 5 is arranged on the side and front of the height-limiting gantry, a detection device 6 and a first identification device 7 are arranged in the middle of the vertical pole 5, and a warning sign 8 is arranged on the upper end of the vertical pole 5;

[0040] The first recognition device 7 recognizes the license plate number information of the car, the detection device 6 detects the car data from the side of the car, and sends the car data to the controller, the controller calculates the vehicle height information based on the car data, and determines whether the vehicle height information is greater than or equal to the first preset threshold: if so, the controller sends an alarm signal to the display screen 10 and the broadcasting device, the display screen 10 displays text alarm information, and the broadcasting device issues a voice prompt alarm; if not, the controller sends a standby message to the display screen 10 and the broadcasting device.

[0041] The active anti-collision height-limiting gantry system of the present embodiment limits the height of the car through the height-limiting gantry, and arranges a vertical pole 5 on the side front of the height-limiting gantry. A warning sign 8 is arranged on the upper end of the vertical pole 5. The warning sign 8 is used to remind the car driver to pay attention to the height-limiting gantry arranged behind the vertical pole 5. A first recognition device 7 and a detection device 6 are arranged in the middle of the vertical pole 5. The first recognition device 7 can recognize the license plate number information of the car, and the detection device 6 can detect the car data from the side of the car and send the car data to the controller. The controller calculates the vehicle height information according to the car data and determines whether the vehicle height information is greater than the first preset threshold value: if so, the controller sends an alarm signal to the display screen 10 and the broadcasting device, the display screen 10 displays the text alarm information, and the broadcasting device issues a voice prompt alarm, thereby warning the driver that the car will collide with the cross bar 2. The active anti-collision height-limiting gantry system has a vertical pole 5, a warning sign 8, a first identification device 7 and a detection device 6 arranged in advance in the front, which reserves a longer reaction time for the car driver and can prevent the car driver from being unable to brake due to insufficient reaction. The display screen 10 and the broadcasting device can actively warn the car that exceeds the height limit, thereby playing a role in active anti-collision.

[0042] Furthermore, the height limiting gantry of the present embodiment includes a cross bar and two vertical poles 21; the two vertical poles 21 are respectively fixedly arranged on both sides of the road, the upper end of one of the two vertical poles 21 is detachably connected to one end of the cross bar 2, and the upper end of the other vertical pole 21 is detachably connected to the other end of the cross bar 2.

[0043] In this embodiment, the first recognition device 7 is a camera, and the broadcasting device is a multimedia player.

[0044] In this embodiment, the active anti-collision height-limiting gantry system further includes a plurality of bases 3 pre-buried in the ground, the bases 3 are cast by concrete and are used to fix the connection with the vertical pole 2 1 or the vertical pole 1 5 .

[0045] See also Figure 3 The detection device 6 of this embodiment is a laser radar. The working process of the laser radar and the controller is as follows: First, the first preset threshold value H is determined according to the specific height limit height of the active height limit gantry of this embodiment. max . Secondly, when the car passes by the pole 5, the first recognition device 7 recognizes the license plate number information of the car, and the controller controls the laser radar to emit laser and receive the reflected laser signal to obtain the car data. The car data includes the distance L between the laser radar and the car, the angle θ between the laser beam contacting the roof and the horizontal direction, and the angle β between the laser beam contacting the bottom of the car and the horizontal direction. Again, the laser radar sends the above car data to the controller, and the controller calculates and obtains the car height information H=H1+H2=L*tanθ+L*tanβ. Finally, the controller determines whether the car height information H is greater than or equal to the first preset threshold value Hmax :If not, the vehicle can pass safely; if yes, that is, when H≧H max , the vehicle cannot pass safely. At this time, the processor sends the license plate information of the vehicle that cannot pass normally and safely to the display screen 10 and the broadcasting device. The display screen 10 displays the license plate information of the vehicle that cannot pass normally and safely. At the same time, the broadcasting device plays the vehicle license plate information, prompting that it is not safe to pass through the height limit gantry, and the driver is asked to take a detour. This solves the problem that the driver of a large vehicle cannot clearly identify the content of the height limit sign of the height limit gantry in bad weather, and thus mistakenly enters the height limit gantry, causing the vehicle to collide with the height limit gantry.

[0046] See also Figure 4 In this embodiment, there are two display screens 10, one of which displays the height limit of the active height limit mast, and the other display screen 10 displays the license plate information of the car that cannot pass normally and safely. The height limit of the height limit mast is displayed on the display screen 10, so that the driver can clearly identify the height limit of the height limit mast even in bad weather conditions.

[0047] Combination Figure 1 , Figure 2 and Figure 4 As shown, a shielding plate 12 extending to the front side is provided on the upper part of the display screen 10 and the second identification device 11. The purpose of providing the shielding plate 12 is to protect the display screen 10 and the second identification device 11 from being damaged by rain and sunlight.

[0048] Furthermore, the road of this embodiment has multiple lanes, and the multiple lanes share a height limiting gantry, which also includes a moving mechanism 9 and a second identification device 11; the moving mechanism 9 is installed on the cross bar 2, and the display screen 10 and the second identification device 11 are installed on the moving end of the moving mechanism 9, and the controller is electrically connected to the moving mechanism 9 and the second identification device 11 respectively, the second identification device 11 identifies the position information of vehicles that cannot pass normally, and sends the vehicle position information to the controller, the controller sends a control instruction to the moving mechanism 9 according to the vehicle position information, and the moving mechanism 9 moves the display screen 10 along the length direction of the cross bar 2 to the lane where the vehicle that cannot pass normally is located.

[0049] The height limit gantry of this embodiment is suitable for road conditions with different numbers of lanes because the moving mechanism 9 can move the display screen 10 laterally along the length direction of the cross bar 2. This expands the application scope of the gantry without increasing the number of display screens 10 and reduces the manufacturing cost of the active anti-collision height limit gantry system.

[0050] Furthermore, the moving mechanism 9 includes a fixed plate, a sliding plate, a gear rack drive assembly and a servo motor. A fixed plate is arranged along the length direction of the crossbar 2, a guide rail is arranged along the length direction of the fixed plate, a slide seat that can slide along the guide rail is arranged at the bottom of the sliding plate, and a display screen 10 and a second identification device 11 are arranged on the upper surface of the sliding plate; a driving connection is formed between the fixed plate and the sliding plate through a gear rack drive assembly, the servo motor is fixedly mounted on the fixed plate, and the output end of the servo motor is drivingly connected to the gear rack drive assembly to transmit the driving force to the gear rack drive assembly, and the gear rack drive assembly drives the sliding plate to perform linear reciprocating motion along the guide rail. It should be noted that the gear rack drive assembly includes a gear and a rack, and the rotating shaft of the servo motor passes through the fixed plate and is connected to the gear, thereby driving the gear to move along the rack.

[0051] See also Figure 5 The height-limited gantry of this embodiment also includes two splicing modules 4. The splicing modules 4 can be selectively arranged at the connection between the two vertical poles 1 and the cross bar 2. The lower end of the splicing module 4 is connected to the upper end flange of the vertical pole 1, and the upper end of the splicing module 4 is connected to the end flange of the cross bar 2 to adjust the height limit of the cross bar 2. It should be noted that the splicing module 4 is a splicing rod of any length, which is a standard part with the same size and specification as the vertical pole 1 and the cross bar 2. Both ends of the splicing module 4 are provided with a first flange, and the ends of the vertical pole 1 and the cross bar 2 are provided with a second flange. The first flange and the second flange are fixedly connected by bolts, so that the vertical pole 1, the splicing module 4, and the cross bar 2 are spliced ​​together to adjust the height limit of the height-limited gantry. This solves the problem that the height of the height-limited gantry is fixed, and the material of the height-limited gantry needs to be replaced after the road conditions change due to the waste of materials.

[0052] Embodiment 2:

[0053] See also Figure 6This embodiment provides another active anti-collision height-limiting gantry system. Compared with the embodiment 1, the active anti-collision height-limiting gantry system of this embodiment includes two upright poles 5, and the detection device 6 includes a laser transmitter 61 and a laser receiver 62. The two upright poles 5 are fixedly arranged on both sides of the road respectively. The laser transmitter 61 is installed at the middle of one of the two upright poles 5 corresponding to the height limit position, and the laser receiver 62 is installed at the middle of the other upright pole 5 corresponding to the height limit position. The controller is electrically connected to the laser transmitter 61 and the laser receiver 62. The laser transmitter 61 transmits a laser beam to the laser receiver 62. When the laser receiver 62 does not receive the laser beam emitted by the laser transmitter 61, that is, the car blocks the laser beam emitted by the laser transmitter 61, the laser receiver 62 transmits a first detection signal to the controller, and the controller determines that the vehicle height information is greater than or equal to the first preset threshold; when the laser receiver 62 receives the laser beam emitted by the laser transmitter 61, that is, the car does not block the laser beam emitted by the laser transmitter 61, the laser receiver 62 transmits a second detection signal to the controller, and the controller determines that the vehicle height information is less than the first preset threshold. Compared with Example 1, the active anti-collision height-limiting gantry system of this embodiment has a stable and reliable detection method and a wide range of applications, that is, it can be used on roads of various slopes.

[0054] The rest of the same points as in Example 1 will not be repeated here.

[0055] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An active anti-collision height-limiting gantry system, characterized in that: It comprises a height-limiting door frame, a vertical pole (5) and an intelligent system, wherein the intelligent system comprises a controller, a detection device (6) electrically connected to the controller, a first identification device (7), a display screen (10) and a broadcasting device; The height-limiting gantry spans the road, a display screen (10) and a broadcasting device are arranged on the upper part of the height-limiting gantry, a vertical pole (5) is arranged on the side front of the height-limiting gantry, a detection device (6) and a first identification device (7) are arranged in the middle of the vertical pole (5), and a warning sign (8) is arranged on the upper end of the vertical pole (5); The first recognition device (7) is capable of recognizing the license plate number information of the automobile. The detection device (6) detects automobile data from the side of the automobile and sends the automobile data to the controller. The controller calculates the vehicle height information based on the automobile data and determines whether the vehicle height information is greater than or equal to a first preset threshold value. If so, the controller sends an alarm signal to the display screen (10) and the broadcasting device, the display screen (10) displays text alarm information, and the broadcasting device issues a voice prompt alarm. If not, the controller sends a standby message to the display screen (10) and the broadcasting device.

2. The active anti-collision height-limiting gantry system according to claim 1, characterized in that: The detection device (6) is a laser radar, which emits laser light and receives reflected laser signals, thereby obtaining vehicle data, the vehicle data including the distance L between the laser radar and the vehicle, the angle θ between the laser beam contacting the roof and the horizontal direction, and the angle β between the laser beam contacting the bottom of the vehicle and the horizontal direction; The laser radar sends the distance L between the laser radar and the car, the angle θ between the laser beam touching the roof and the horizontal direction, and the angle β between the laser beam touching the bottom of the car and the horizontal direction to the controller, and the controller calculates the car height information H=L*tanθ+L*tanβ.

3. The active anti-collision height-limiting gantry system according to claim 1, characterized in that: The number of the first upright pole (5) is two, and the detection device (6) includes a laser transmitter (61) and a laser receiver (62) electrically connected to the controller; Two poles (5) are fixedly arranged on both sides of the road, respectively; a laser transmitter (61) is installed at a middle position of one of the two poles (5) corresponding to a height limit, and a laser receiver (62) is installed at a middle position of the other pole (5) corresponding to a height limit; The laser transmitter (61) transmits a laser beam to the laser receiver (62); when the laser receiver (62) does not receive the laser beam emitted by the laser transmitter (61), the laser receiver (62) transmits a first detection signal to the controller, and the controller determines that the vehicle height information is greater than or equal to a first preset threshold; when the laser receiver (62) receives the laser beam emitted by the laser transmitter (61), the laser receiver (62) transmits a second detection signal to the controller, and the controller determines that the vehicle height information is less than the first preset threshold.

4. The active anti-collision height-limiting gantry system according to claim 2 or 3, characterized in that: The height-limiting door frame comprises a horizontal bar (2) and two vertical bars (1); The two vertical poles (1) are respectively fixedly arranged on both sides of the road; the upper end of one of the two vertical poles (1) is detachably connected to one end of the cross bar (2); and the upper end of the other vertical pole (1) is detachably connected to the other end of the cross bar (2).

5. The active anti-collision height-limiting gantry system according to claim 4, characterized in that: The number of display screens (10) is two, one of the two display screens (10) displays the height limit of the active height limit gantry, and the other display screen (10) displays the vehicle license plate information of the car that cannot pass normally and safely.

6. The active anti-collision height-limiting gantry system according to claim 4, characterized in that: The road has a plurality of lanes, and the plurality of lanes share a height-limiting gantry, and the height-limiting gantry also includes a moving mechanism (9) and a second identification device (11); A moving mechanism (9) is installed on the cross bar (2), a display screen (10) and a second identification device (11) are installed on the moving mechanism (9), a controller is electrically connected to the moving mechanism (9) and the second identification device (11) respectively, the second identification device (11) identifies the position information of a vehicle that cannot pass normally, and sends the position information of the vehicle to the controller, the controller sends a control instruction to the moving mechanism (9) according to the position information of the vehicle, and the moving mechanism (9) can move the display screen (10) along the length direction of the cross bar (2) to the lane where the vehicle that cannot pass normally is located.

7. The active anti-collision height-limiting gantry system according to claim 6, characterized in that: The moving mechanism (9) comprises a fixed plate, a sliding plate, a gear rack drive assembly and a servo motor; A fixed plate is arranged along the length direction of the crossbar (2), a guide rail is arranged along the length direction of the fixed plate, a sliding seat capable of sliding along the guide rail is arranged at the bottom of the sliding plate, and a display screen (10) and a second identification device (11) are arranged on the upper surface of the sliding plate; The fixed plate and the sliding plate are driven and connected via a rack and pinion drive assembly. The servo motor is fixedly mounted on the fixed plate. The output end of the servo motor is driven and connected to the rack and pinion drive assembly to transmit the driving force to the rack and pinion drive assembly. The rack and pinion drive assembly can drive the sliding plate to perform linear reciprocating motion along the guide rail.

8. The active anti-collision height-limiting gantry system according to claim 6, characterized in that: A shielding plate (12) extending toward the front is arranged on the upper part of the display screen (10) and the second identification device (11).

9. The active anti-collision height-limiting gantry system according to claim 4, characterized in that: It also includes a plurality of bases (3) pre-buried underground, the bases (3) being cast from concrete and used for fixedly connecting the second vertical pole (1) or the first vertical pole (5).

10. The active anti-collision height-limiting gantry system according to claim 4, characterized in that: The height-limiting gantry also includes two splicing modules (4). The splicing modules (4) can be selectively arranged at the connection between the two vertical poles (1) and the cross bar (2). The lower end of the splicing module (4) is connected to the upper end flange of the vertical pole (1), and the upper end of the splicing module (4) is connected to the end flange of the cross bar (2) to adjust the height limit of the cross bar (2).

Images