Expressway toll station ramp congestion monitoring device

Abstract

This invention relates to the field of highway monitoring device technology, specifically to a highway toll station ramp congestion monitoring device, comprising: a mounting barrel, wherein a mounting flange is fixedly installed on the outer wall of the mounting barrel at a lower position; a lifting support assembly, wherein the lifting support assembly includes a main shaft disposed within the mounting barrel, a threaded sleeve slidably installed within the main shaft, a connecting plate fixedly installed on the upper part of the threaded sleeve, a mounting bracket fixedly installed on the upper end face of the connecting plate, a monitoring device body fixedly installed on the outer wall of the mounting bracket, and a second rotating seat and a first rotating ring fixedly installed on the opposite side of the connecting plate and the mounting barrel. This invention provides windproof image stabilization and vibration damping support for the monitoring device body through a wind guide plate, a speed detection element, a winding device, and a buffer and shock absorption assembly, which can reduce the impact of wind load and vehicle vibration on image acquisition and improve the stability and accuracy of congestion data upload.

Description

Technical Field

[0001] This invention relates to the field of highway monitoring device technology, specifically to a highway toll station ramp congestion monitoring device. Background Technology

[0002] With the increase in traffic volume at highway toll stations, queuing, slow traffic, and short-term congestion at toll station ramps are common. Existing intelligent transportation IoT systems typically require the deployment of front-end monitoring terminals at toll station ramps. Through image acquisition, traffic status recognition, and network communication, these terminals upload vehicle queue length, traffic density, and congestion status to the traffic management platform for congestion warnings and traffic scheduling. However, toll station ramp monitoring terminals are often installed at high positions. In windy weather or when large vehicles pass through continuously, the monitoring terminals are prone to shaking, resulting in unstable images. This, in turn, affects the edge recognition results and the accuracy of congestion data uploaded to the intelligent transportation IoT platform.

[0003] Monitoring devices typically need to be raised to a certain height to obtain a wider monitoring field of view. However, in windy weather conditions, devices installed at high altitudes are prone to swaying or even shifting due to wind loads, resulting in shaking of the monitoring screen and inaccurate data acquisition. Long-term use may also affect the structural stability and lifespan of the equipment. Although existing devices have basic windproof structures, most lack the ability to adaptively adjust to wind speed and cannot dynamically adjust the device's posture or enhance structural stability according to real-time changes in wind force. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a highway toll station ramp congestion monitoring device, which can effectively solve the problem of swaying or even displacement under strong wind conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a highway toll station ramp congestion monitoring device, comprising:

[0007] An installation bucket is provided, and an installation flange is fixedly installed on the outer wall of the installation bucket at a lower position.

[0008] A lifting support assembly includes a main shaft disposed within an installation barrel. A threaded sleeve is slidably installed within the main shaft. A connecting plate is fixedly installed on the upper part of the threaded sleeve. An installation bracket is fixedly installed on the upper end face of the connecting plate. A second rotating seat and a first rotating ring are fixedly installed on the side of the connecting plate opposite to the installation barrel. A sliding sleeve is disposed between the second rotating seat and the first rotating ring. A sliding rod is slidably installed within the sliding sleeve. A guide plate is fixedly installed on the side of the sliding rod away from the axis of the installation flange. Two limiting seats are disposed between the second rotating seat and the first rotating ring and on the symmetrical plane of the sliding sleeve. A contact rod is fixedly installed within each limiting seat. The two limiting seats are respectively fixedly connected to the first rotating seat. A winding device is disposed on one side of one of the limiting seats. A tension rope is disposed within the winding device. The lower end of the tension rope is fixedly connected to the contact rod in the limiting seat at a lower position.

[0009] The main body of the monitoring device is fixedly installed on the outer wall of the mounting bracket. The main body of the monitoring device includes an image acquisition unit, an edge processing module, a traffic state recognition unit, and a communication module. The image acquisition unit is used to acquire images of vehicles queuing at toll station ramps. The edge processing module is used to preprocess the vehicle queuing images. The traffic state recognition unit is used to generate vehicle queue length, traffic density, and congestion status information based on the preprocessed vehicle queuing images. The communication module is used to upload the congestion status information to the intelligent transportation Internet of Things platform.

[0010] Preferably, a connecting seat is fixedly installed at the inner bottom end of the mounting barrel and below the main shaft. An outer box is fixedly installed on the outer wall of the main shaft. A first transmission shaft is rotatably installed inside the outer box. A rotary drive component is fixedly installed on the upper end face of the outer box. The output end of the rotary drive component passes through the outer box and is fixedly connected to the first transmission shaft. A threaded rod is rotatably installed inside the main shaft. The threaded rod is threadedly connected to the inner wall of the threaded sleeve. The first transmission shaft and the threaded rod are connected by transmission. Limiting telescopic rods are symmetrically installed between the lower end of the connecting plate and the outer wall of the main shaft.

[0011] Preferably, mounting plates are fixedly installed on opposite sides of the first rotating seat, and the opposite sides of the mounting plates are rotatably connected to the sliding sleeve. A straight plate is fixedly installed on opposite sides of the first rotating seat, and the opposite side of the straight plate is fixedly connected to the limiting seat. The outer wall of the tension rope is slidably connected to the contact rod wall inside the limiting seat at the upper position. The lower end face of the straight plate is fixedly connected to the winding device. A T-shaped plate is fixedly installed on one side of the straight plate. A fan blade is rotatably installed on one side of the T-shaped plate. A speed detection element is fixedly installed on one side of the T-shaped plate and below the fan blade. The winding device is electrically connected to the speed detection element via a controller.

[0012] Preferably, it also includes a buffer and shock absorption assembly, which includes a connecting disc installed at the lower end of the main shaft. A connecting column is fixedly installed on the lower end face of the connecting disc, and a circular connector is fixedly installed on the lower end face of the connecting column. The circular connector is rotatably connected to the inner wall of the connecting seat.

[0013] Preferably, a coupling is fixedly installed inside the main shaft and at the lower end of the threaded rod, and a second drive shaft is rotatably installed inside the main shaft and below the coupling. The output end of the coupling is fixedly connected to the second drive shaft, and the lower end of the second drive shaft passes through and is fixedly connected to the rotating shaft.

[0014] Preferably, the outer wall of the connecting column is provided with a circumferential array of grooves, the bottom of the mounting barrel is fixedly installed with a circumferential array of slide rails, a slide block is slidably installed in the slide rails, a first spring is fixedly installed between the slide block and the slide rails, a second connecting block is rotatably installed on the outer wall of the slide block, a slider is installed in the grooves, and the outer wall of the slider is rotatably installed with the first connecting block.

[0015] Preferably, a fixing sleeve is fixedly installed at the lower end of the first connecting block, a circular plate is fixedly installed at the upper end of the second connecting block, a connecting rod is fixedly installed on the upper surface of the circular plate, the upper end of the connecting rod passes through the fixing sleeve and is fixedly installed with a hollow bracket, a partition is fixedly installed at the upper end of the hollow bracket, a conical hole is opened in the partition, a one-way valve is embedded in the partition in a circumferential array with the center line of the conical hole as the axis, and the fixing sleeve is filled with hydraulic oil.

[0016] Preferably, a second spring is fixedly installed between the inner wall of the fixed sleeve and the partition plate, and a short rod is fixedly installed at the inner top end of the fixed sleeve, with the lower end of the short rod passing through a conical hole and having a conical head fixedly installed thereon.

[0017] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0018] First, by setting the main body of the monitoring device as an intelligent transportation IoT front-end terminal including an image acquisition unit, an edge processing module, a traffic status recognition unit, and a communication module, vehicle queuing image acquisition, traffic status recognition, and congestion information uploading are completed on-site at the toll station ramps, enabling the congestion status of the toll station ramps to be promptly connected to the intelligent transportation IoT platform. At the same time, by using wind deflectors, speed detection elements, winding devices, and buffer and shock absorption components to provide windproof image stabilization and shock absorption support for the main body of the monitoring device, the impact of wind load and vehicle vibration on image acquisition can be reduced, improving the stability and accuracy of congestion data uploading.

[0019] Secondly, by setting up a buffer and shock absorption component linked to the lifting mechanism, the state of the internal hydraulic damping structure is adjusted synchronously when the monitoring device is raised. This enables the device to have low-damping and rapid shock absorption capabilities when it is at a high position, effectively absorbing frequent vibrations caused by vehicle traffic. When it is at a low position, it automatically switches to a high-damping state to smoothly resist accidental impacts. This height-adaptive shock absorption method effectively overcomes the vibration effects under different working conditions, extends the service life of the equipment, and ensures the stability of long-term monitoring. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the main shaft of the present invention;

[0023] Figure 3 This is a cross-sectional structural diagram of the main shaft of the present invention;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 This is a schematic diagram of the lifting support assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the rotating shaft of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the buffer and shock absorption component of the present invention;

[0028] Figure 8 This is a cross-sectional view of the fixing sleeve of the present invention.

[0029] Reference numerals: 1. Mounting barrel; 101. Mounting flange; 2. Lifting support assembly; 201. Connecting seat; 202. Main shaft; 203. Threaded rod; 204. External box; 205. First drive shaft; 206. Rotary drive component; 207. Screw sleeve; 208. Connecting plate; 209. Limiting telescopic rod; 210. Mounting bracket; 212. First rotating ring; 213. First rotating seat; 214. Second rotating seat; 215. Mounting plate; 216. Sliding sleeve; 217. Sliding rod; 218. Air guide plate; 219. Straight plate; 221. Limiting seat; 222. Winding device 223. Fan blade; 224. Rotation speed detection element; 3. Buffer and shock absorption assembly; 301. Coupling; 302. Second drive shaft; 303. Connecting disc; 304. Connecting column; 305. Slide groove; 306. Rotating shaft; 307. Slider; 308. First connecting block; 309. Slide rail; 310. Slide seat; 311. First spring; 312. Fixing sleeve; 313. Short rod; 314. Second spring; 315. Cone head; 316. Partition plate; 317. One-way valve; 318. Second connecting block; 319. Circular plate; 320. Connecting rod; 321. Hollow bracket. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] The present invention will be further described below with reference to embodiments.

[0032] Example: Refer to Figures 1 to 8 Highway toll station ramp congestion monitoring device, including:

[0033] Mounting bucket 1, with mounting flange 101 fixedly installed on the outer wall of mounting bucket 1 at a lower position;

[0034] The lifting support assembly 2 includes a main shaft 202 disposed within the mounting barrel 1. A threaded sleeve 207 is slidably installed within the main shaft 202. A connecting plate 208 is fixedly installed on the upper part of the threaded sleeve 207. A mounting bracket 210 is fixedly installed on the upper end face of the connecting plate 208. A second rotating seat 214 and a first rotating ring 212 are fixedly installed on the opposite side of the connecting plate 208 and the mounting barrel 1. A sliding sleeve 216 is disposed between the second rotating seat 214 and the first rotating ring 212. A sliding rod 217 is slidably installed within the sliding sleeve 216. A guide plate 218 is fixedly installed on the side of the sliding rod 217 away from the axis of the mounting flange 101. The second rotating seat 214 and the first rotating ring 212 are symmetrically located within the sliding sleeve 216. Two limit seats 221 are provided on the surface. A contact rod is fixedly installed in the limit seat 221. The two limit seats 221 are fixedly connected to the first rotating seat 213 respectively. A winding device 222 is provided on one side of one of the limit seats 221. The winding device 222 is implemented by using existing mature components such as a miniature electric winch with self-locking function or a winding device driven by a servo motor. It is equipped with a tension sensor and must have the ability to accurately control the length and tension of the tension rope according to the electrical signal. Its shaft can rotate freely in the power-off state to ensure that the natural extension of the tension rope is not hindered during the lifting process. A tension rope is provided in the winding device 222. The lower end of the tension rope is fixedly connected to the contact rod in the limit seat 221 at the lower position.

[0035] The main body of the monitoring device is fixedly installed on the outer wall of the mounting bracket 210. The main body of the monitoring device includes an image acquisition unit, an edge processing module, a traffic state recognition unit, and a communication module. The image acquisition unit is used to acquire images of vehicles queuing at toll station ramps. The edge processing module is used to preprocess the images of vehicles queuing. The traffic state recognition unit is used to generate vehicle queue length, traffic density, and congestion status information based on the preprocessed images of vehicles queuing. The communication module is used to upload the congestion status information to the intelligent transportation Internet of Things platform.

[0036] Reference Figures 2 to 4 A connecting seat 201 is fixedly installed at the inner bottom of the mounting barrel 1 and below the main shaft 202. An outer box 204 is fixedly installed on the outer wall of the main shaft 202. A first drive shaft 205 is rotatably installed inside the outer box 204. A rotary drive component 206 is fixedly installed on the upper end face of the outer box 204. The output end of the rotary drive component 206 passes through the outer box 204 and is fixedly connected to the first drive shaft 205. A threaded rod 203 is rotatably installed inside the main shaft 202. The threaded rod 203 is threadedly connected to the inner wall of the threaded sleeve 207. The first drive shaft 205 and the threaded rod 203 are connected by transmission. Limiting telescopic rods 209 are symmetrically installed between the lower end of the connecting plate 208 and the outer wall of the main shaft 202.

[0037] Reference Figure 5Mounting plates 215 are fixedly installed on opposite sides of the first rotating seat 213. The opposite side of the mounting plates 215 is rotatably connected to the sliding sleeve 216. A straight plate 219 is fixedly installed on opposite side of the first rotating seat 213. The opposite side of the straight plate 219 is fixedly connected to the limiting seat 221. The outer wall of the tension rope is slidably connected to the contact rod wall inside the limiting seat 221 at the upper position. The lower end face of the straight plate 219 is fixedly connected to the winding device 222. A T-shaped plate is fixedly installed on one side of the straight plate 219. A fan blade 223 is rotatably installed on one side of the T-shaped plate. A speed detection element 224 is fixedly installed on one side of the T-shaped plate and below the fan blade 223. A controller is electrically connected between the winding device 222 and the speed detection element 224. The speed detection element 224 is... The rotational speed of the fan blades 223, driven by the air guide plate 218 and facing the windward side, is monitored in real time, and the mechanical speed is converted into a corresponding electrical signal (usually a pulse signal) and transmitted to the controller. By monitoring the rotational speed, the real-time wind speed is indirectly and accurately reflected, providing a direct and quantitative decision basis for controlling the automatic winding and unwinding actions of the winding device 222, thereby realizing the intelligent activation and deactivation of the windproof mechanism. This component can be implemented using mature non-contact speed sensors such as photoelectric encoders or Hall sensors. It must have the ability to convert the rotational physical quantity into a standard electrical signal. The controller presets a wind speed threshold (such as 10 m / s). When the wind speed converted from the rotational speed fed back by the rotational speed detection element 224 exceeds this threshold, the winding device 222 is controlled to operate.

[0038] Reference Figure 6 It also includes a buffer and shock absorption assembly 3, which includes a connecting disc 303 installed at the lower end of the main shaft 202. A connecting column 304 is fixedly installed on the lower end face of the connecting disc 303, and a circular connector is fixedly installed on the lower end face of the connecting column 304. The circular connector is rotatably connected to the inner wall of the connecting seat 201.

[0039] Reference Figure 4 A coupling 301 is fixedly installed inside the main shaft 202 and at the lower end of the threaded rod 203. A second drive shaft 302 is rotatably installed inside the main shaft 202 and below the coupling 301. The output end of the coupling 301 is fixedly connected to the second drive shaft 302. The lower end of the second drive shaft 302 passes through and connects to the disc 303 and is fixedly connected to the rotating shaft 306.

[0040] Reference Figure 8 The outer wall of the connecting column 304 is provided with a circumferential array of grooves 305. The bottom of the mounting barrel 1 is fixedly installed with a circumferential array of slide rails 309. A slide block 310 is slidably installed in the slide rail 309. A first spring 311 is fixedly installed between the slide block 310 and the slide rail 309. A second connecting block 318 is rotatably installed on the outer wall of the slide block 310. A slider 307 is installed in the groove 305. A first connecting block 308 is rotatably installed on the outer wall of the slider 307.

[0041] Reference Figure 8 A fixing sleeve 312 is fixedly installed at the lower end of the first connecting block 308, a circular plate 319 is fixedly installed at the upper end of the second connecting block 318, a connecting rod 320 is fixedly installed on the upper surface of the circular plate 319, the upper end of the connecting rod 320 passes through the fixing sleeve 312 and is fixedly installed with a hollow bracket 321, a partition 316 is fixedly installed at the upper end of the hollow bracket 321, a conical hole is opened in the partition 316, and a one-way valve 317 is embedded in the partition 316 in a circumferential array with the center line of the conical hole as the axis, and the fixing sleeve 312 is filled with hydraulic oil.

[0042] Reference Figure 8 A second spring 314 is fixedly installed between the inner wall of the fixed sleeve 312 and the partition 316. A short rod 313 is fixedly installed at the inner top of the fixed sleeve 312. The lower end of the short rod 313 passes through a conical hole and a conical head 315 is fixedly installed thereon. When the fixed sleeve 312 moves downward, the partition 316 inside moves upward relative to the fixed short rod 313 and the conical head 315, compressing the second spring 314. At the same time, the gap between the conical head 315 and the conical hole on the partition 316 increases. At this time, if high-frequency vibration is generated due to the passage of a large vehicle, causing the main shaft 202 and the connecting column 304 to tilt slightly, the fixed sleeve 312 will be pushed to slide quickly along the connecting rod 320, and the gap between the conical head 315 and the conical hole will further expand instantaneously. The hydraulic oil in the fixed sleeve 312 can flow quickly through this expanded gap, with a small damping force. In conjunction with the first spring 311 and the second spring 314, it can quickly absorb and dissipate the high-frequency vibration energy.

[0043] When the device descends to the low position, the slider 307 moves up, and the fixed sleeve 312 rises accordingly. The gap between the cone head 315 and the conical hole becomes smaller. At this time, when encountering accidental impact or low-frequency shaking, the hydraulic oil has difficulty passing through the narrow gap quickly, generating a large hydraulic damping force, thereby effectively resisting the impact and maintaining the overall stability of the device.

[0044] The working principle of this invention is as follows:

[0045] When the main body of the monitoring device needs to be raised and supported, the first drive shaft 205 is rotated by opening the rotary drive component 206. The first drive shaft 205 drives the threaded rod 203 to rotate via a belt. The threaded rod 203 is threadedly connected to the inner wall of the threaded sleeve 207, which drives the threaded sleeve 207 to raise the connecting plate 208 and the mounting bracket 210. When the connecting plate 208 rises, it drives the long rod sliding inside the limit telescopic rod 209 to rise synchronously and stably, so that the main body of the monitoring device rises to a certain height for monitoring. However, in windy weather, when it is raised to a certain height for inspection, it will be blown and shaken by the wind. At this time, the strong wind will blow the wind guide plate 218, which will drive the sliding rod 217, the sliding sleeve 216 and the first rotating seat 213 to rotate. The first rotating seat 213 will be connected to the second rotating seat 214 and the first rotating ring 210. The rotation of the inner part of the fan blade 223 causes it to face the windward side. The strong wind will cause the fan blade 223 to rotate continuously, and different wind speeds will cause the fan blade 223 to generate different speeds. When the speed exceeds the preset speed, the speed detection element 224 will detect and generate an electrical signal. The controller controls the voltage input to the winding device 222 through the generated electrical signal, so that the winding device 222 winds up the tension rope. The tension rope passes through the contact rod in the upper limit seat 221 and pulls the contact rod in the lower limit seat 221, pulling the first rotating seat 213, so that it generates a frictional torque between the first rotating ring 212 and the first rotating ring 212. This frictional torque resists the torque of the wind on the wind guide plate 218 and the upper structure, thereby forming dynamic resistance on the windward side and effectively suppressing the swaying of the main body of the monitoring device.

[0046] It should be noted that the sliding sleeve 216 and the sliding rod 217 are slidably connected to each other, which can extend the height. The winding device 222 is not constrained when the shaft is not powered. When the mounting bracket 210 is driven to rise, the tension rope will automatically drive the shaft to rotate and stretch the length, without hindering the rise of the mounting bracket 210.

[0047] After the main body of the monitoring device is raised to the monitoring height, the image acquisition unit continuously acquires images of the vehicle queuing area in the toll station ramp. The edge processing module performs shake removal, filtering, and preprocessing on the acquired images. The traffic status recognition unit generates vehicle queue length, traffic density, and congestion status information based on the processed images and uploads it to the intelligent transportation IoT platform through the communication module. After receiving the above information, the intelligent transportation IoT platform can provide the traffic management system with congestion warnings, lane opening scheduling, or ramp guidance prompts. Since the wind deflector 218, speed detection element 224, winding device 222, and buffer shock absorption component 3 can stabilize the position of the main body of the monitoring device under wind load and vehicle vibration conditions, the image jitter of the acquired images can be reduced, and the accuracy of the traffic status data uploaded to the intelligent transportation IoT platform can be improved.

[0048] Even in windless weather, large vehicles such as trucks often cause the main body of the monitoring device to sway when passing through toll stations, especially when the main body of the monitoring device is in a high position. Therefore, when the threaded rod 203 rotates and drives the main body of the monitoring device to rise, it simultaneously drives the second transmission shaft 302 to rotate through the coupling 301. The second transmission shaft 302 then drives the rotating shaft 306 to rotate within the connecting column 304. The rotating shaft 306 engages with the inner wall of the slider 307 via a thread, driving the slider 307 to slide downwards along the groove 305. The descending slider 307, through the first connecting block 308, causes the entire fixed sleeve 312 to descend. As the fixed sleeve 312 descends, it slides on the outer wall of the connecting rod 320. The partition 316, connected to the upper end of the connecting rod 320 via a hollow bracket 321, slides upwards within the fixed sleeve 312 and compresses the second spring 314. With the short rod 313 and the cone 315 fixed, the gap between the tapered hole and the cone 315 gradually increases. Thus, when the main shaft 202 and the connecting column 304 shake, the connecting column 304 tilts in one direction, compressing the slider 307, causing the first connecting block 308 and the fixed sleeve 312 to slide rapidly downwards along the outer wall of the connecting rod 320. The cone 315 moves toward the circular plate 319, increasing the gap between it and the conical hole. This allows the hydraulic oil in the fixed sleeve 312 to flow quickly toward the bottom of the partition 316 through the increased gap between the cone 315 and the conical hole. At this time, the second spring 314 between the partition 316 and the fixed sleeve 312 will buffer the vibration, and the first spring 311 between the slide block 310 and the slide rail 309 will further buffer the vibration. After the vibration, the partition 316 will quickly return to its original position, and the increased gap between the cone 315 and the conical hole will allow the hydraulic oil to flow back quickly into the upper fixed sleeve 312 and above the partition 316. In this way, when the main body of the monitoring device is in the upper position with a high vibration frequency, the hydraulic oil can flow quickly to counteract the vibration generated when large vehicles pass through the toll station.

[0049] It should be noted that when the main body of the monitoring device is at a low position, the vibration frequency is low, the gap between the cone head 315 and the cone hole mentioned above will not increase, the hydraulic oil will not flow back quickly, and therefore the damping is large, so as to match the vibration cancellation mode at the low position of the main body of the monitoring device.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A highway toll station ramp congestion monitoring device, characterized in that, include: The mounting barrel (1) is fixedly installed on the outer wall of the mounting barrel (1) at a lower position. A lifting support assembly (2) includes a main shaft (202) disposed within a mounting barrel (1). A threaded sleeve (207) is slidably installed within the main shaft (202). A connecting plate (208) is fixedly installed on the upper part of the threaded sleeve (207). A mounting bracket (210) is fixedly installed on the upper end face of the connecting plate (208). A second rotating seat (214) and a first rotating ring (212) are fixedly installed on the opposite side of the connecting plate (208) and the mounting barrel (1). A sliding sleeve (216) is disposed between the second rotating seat (214) and the first rotating ring (212). A sliding rod (217) is slidably installed within the sliding sleeve (216). A guide plate (218) is fixedly installed on the side of the slide rod (217) away from the axis of the mounting flange (101). Two limit seats (221) are provided between the second rotating seat (214) and the first rotating ring (212) and on the symmetrical plane of the slide sleeve (216). A contact rod is fixedly installed in the limit seat (221). The two limit seats (221) are respectively fixedly connected to the first rotating seat (213). A winding device (222) is provided on one side of one of the limit seats (221). A tension rope is provided in the winding device (222). The lower end of the tension rope is fixedly connected to the contact rod in the limit seat (221) at the lower position. The main body of the monitoring device is fixedly installed on the outer wall of the mounting bracket (210). The main body of the monitoring device includes an image acquisition unit, an edge processing module, a traffic status recognition unit, and a communication module. The image acquisition unit is used to acquire images of vehicles queuing at toll station ramps. The edge processing module is used to preprocess the images of vehicles queuing. The traffic status recognition unit is used to generate vehicle queue length, traffic density, and congestion status information based on the preprocessed images of vehicles queuing. The communication module is used to upload the congestion status information to the intelligent transportation Internet of Things platform.

2. The highway toll station ramp congestion monitoring device according to claim 1, characterized in that, A connecting seat (201) is fixedly installed at the inner bottom of the mounting bucket (1) and below the main shaft (202). An outer box (204) is fixedly installed on the outer wall of the main shaft (202). A first transmission shaft (205) is rotatably installed inside the outer box (204). A rotary drive component (206) is fixedly installed on the upper surface of the outer box (204). The output end of the rotary drive component (206) passes through the outer box (204) and is fixedly connected to the first transmission shaft (205). A threaded rod (203) is rotatably installed inside the main shaft (202). The threaded rod (203) is threadedly connected to the inner wall of the threaded sleeve (207). The first transmission shaft (205) is connected to the threaded rod (203) in a transmission connection. Limiting telescopic rods (209) are symmetrically installed between the lower end of the connecting plate (208) and the outer wall of the main shaft (202).

3. The highway toll station ramp congestion monitoring device according to claim 1, characterized in that, Mounting plates (215) are fixedly installed on opposite sides of the first rotating seat (213). The opposite side of the mounting plates (215) is rotatably connected to the sliding sleeve (216). A straight plate (219) is fixedly installed on opposite side of the first rotating seat (213). The opposite side of the straight plate (219) is fixedly connected to the limiting seat (221). The outer wall of the tension rope is slidably connected to the contact rod wall inside the limiting seat (221) at the upper position. The lower end face of the straight plate (219) is fixedly connected to the winding device (222). A T-shaped plate is fixedly installed on one side of the straight plate (219). A fan blade (223) is rotatably installed on one side of the T-shaped plate. A speed detection element (224) is fixedly installed on one side of the T-shaped plate and below the fan blade (223). The winding device (222) and the speed detection element (224) are electrically connected to a controller.

4. The highway toll station ramp congestion monitoring device according to claim 1, characterized in that, It also includes a buffer and shock absorption assembly (3), which includes a connecting disc (303) installed at the lower end of the main shaft (202). A connecting column (304) is fixedly installed on the lower end face of the connecting disc (303), and a circular connector is fixedly installed on the lower end face of the connecting column (304). The circular connector is rotatably connected to the inner wall of the connecting seat (201).

5. The highway toll station ramp congestion monitoring device according to claim 1, characterized in that, A coupling (301) is fixedly installed inside the main shaft (202) and at the lower end of the threaded rod (203). A second drive shaft (302) is rotatably installed inside the main shaft (202) and below the coupling (301). The output end of the coupling (301) is fixedly connected to the second drive shaft (302). The lower end of the second drive shaft (302) is connected through the disc (303) and fixedly connected to the rotating shaft (306).

6. The highway toll station ramp congestion monitoring device according to claim 4, characterized in that, The outer wall of the connecting column (304) is provided with a circumferential array of grooves (305). The bottom of the mounting barrel (1) is fixedly installed with a circumferential array of slide rails (309). A slide block (310) is slidably installed in the slide rail (309). A first spring (311) is fixedly installed between the slide block (310) and the slide rail (309). A second connecting block (318) is rotatably installed on the outer wall of the slide block (310). A slider (307) is installed in the groove (305). A first connecting block (308) is rotatably installed on the outer wall of the slider (307).

7. The highway toll station ramp congestion monitoring device according to claim 6, characterized in that, A fixing sleeve (312) is fixedly installed at the lower end of the first connecting block (308), a circular plate (319) is fixedly installed at the upper end of the second connecting block (318), a connecting rod (320) is fixedly installed on the upper surface of the circular plate (319), the upper end of the connecting rod (320) passes through the fixing sleeve (312) and is fixedly installed with a hollow bracket (321), a partition plate (316) is fixedly installed at the upper end of the hollow bracket (321), a conical hole is opened in the partition plate (316), and a one-way valve (317) is embedded in the partition plate (316) in a circumferential array with the center line of the conical hole as the axis, and the fixing sleeve (312) is filled with hydraulic oil.

8. The highway toll station ramp congestion monitoring device according to claim 1, characterized in that, A second spring (314) is fixedly installed between the inner wall of the fixed sleeve (312) and the partition plate (316). A short rod (313) is fixedly installed at the inner top of the fixed sleeve (312). The lower end of the short rod (313) passes through a conical hole and is fixedly installed with a cone head (315).

Images