Dangerous chemical vehicle driving safety detection structure and safety detection method

Abstract

The invention discloses a dangerous chemical vehicle driving safety detection structure and a safety detection method, and belongs to the technical field of vehicle-mounted safety, the dangerous chemical vehicle driving safety detection structure comprises a fixing plate, the fixing plate is installed at the tail of a vehicle frame through bolts, and a supporting plate is fixed to the side edge of the fixing plate. The wide-angle camera is installed at the top end of the [-shaped frame, the display screen in the vehicle head is used for displaying, a clear visual angle can be provided for the rear portion of the vehicle, in addition, the distance sensors and the speed sensors are installed on the [-shaped frame and the side protection plates, and in the running process of the target vehicle, the target vehicle can be conveniently and rapidly driven. According to the method, the speed difference between a rear vehicle and a target vehicle is detected, the relative speed of the rear vehicle and the target vehicle is judged on the basis of the speed difference, then the distance between the rear vehicle and the target vehicle is detected through a distance sensor, and then the danger prompting distance is adjusted and judged according to the difference of the relative speed of the rear vehicle and the target vehicle. Therefore, a driver is ensured to have sufficient response time, and the driving safety is improved.

Description

Technical Field

[0001] The present invention relates to a safety detection structure, in particular to a hazardous chemical vehicle driving safety detection structure. The present invention also relates to a detection method, in particular to a hazardous chemical vehicle driving safety detection method, and belongs to the field of vehicle-mounted safety technology. Background Art

[0002] In the prior art, for example, the invention with application number 202110349952.4 discloses a vehicle target perception method and system. In order to solve the problem that the prior art does not verify whether the target has invaded the lane, and thus cannot issue an early warning, resulting in a safety hazard, the detection capability of the monocular camera is used to detect the lane line of the vehicle during driving, clarify the vehicle's driving trajectory, and use ultrasound to compensate for the camera's blind spot to detect the lateral and longitudinal distances of the vehicles on the left and right of the vehicle. Then, through the lane line data, it is confirmed whether the left and right vehicles have invaded the lane and are dangerous targets, so that the vehicle can be warned in advance. The advantage of ultrasound in detecting the high accuracy of the lateral and longitudinal distances of close-range targets in low-speed scenarios is used to track the lateral and longitudinal distances of targets on the left and right sides, and sense whether they may invade the lane and become dangerous targets, so as to respond in time, reduce traffic accidents, and ensure the safety of vehicle personnel.

[0003] Similar to the above application, there are still some shortcomings: For vehicles that may rear-end the vehicle behind the vehicle, it is impossible to perform effective warning operations in advance. Although the existing technology can perform warning operations based on the distance between the obstacle vehicle and the target vehicle, the warning is determined based on the length between the obstacle vehicle and the target vehicle. Due to the different driving speeds of the obstacle vehicles, when the driving speed is faster, it is difficult for the target vehicle to make corresponding evasive actions at the same warning distance. In addition, the existing detection structure is fixed in the installation position, the protection effect is poor, and the use function is relatively single.

[0004] Therefore, a hazardous vehicle driving safety detection structure and safety detection method are designed to optimize the above problems. Summary of the invention

[0005] The main object of the present invention is to provide a safety detection structure and a safety detection method for a hazardous chemical vehicle. By installing a wide-angle camera at the top of the C-shaped frame and using a display screen inside the vehicle head for display, a clear view can be provided for the rear of the vehicle. In addition, distance sensors and speed sensors are installed on the C-shaped frame and the side guard plate, which can detect the speed difference between the rear vehicle and the target vehicle during the driving process of the target vehicle, and determine the relative speed between the rear vehicle and the target vehicle based on this. Then, the distance sensor is used to detect the distance between the rear vehicle and the target vehicle, and then the dangerous warning distance is adjusted and determined according to the different relative speeds of the rear vehicle and the target vehicle to ensure that the driver has sufficient reaction time. In addition, when used in combination with warning lights and horns, it can prompt the rear vehicle, effectively reducing the occurrence of rear-end collisions and improving driving safety. By providing a guiding and protecting mechanism composed of grooves, mounting plates, guide rollers, and second springs at both ends of the side of the C-shaped frame, not only can the rear vehicle be guided in the event of a rear-end collision to reduce the damage to the target vehicle, but also it can buffer in the event of a rear-end collision to reduce the instantaneous impact force and ensure the stability of the vehicle. In addition, the distance sensor and the speed sensor are located between the two guiding and protecting mechanisms, which can protect the sensors. The setting of the sliding plate on the inner side of the side guard plate in cooperation with the buffer and protection mechanism composed of a chute, a guide groove, a guide block, and a first spring can protect the vehicle when the side of the vehicle tail is rear-ended, with more comprehensive protection and higher practicability. In addition, by installing the distance sensor and the speed sensor on the side guard plate on a rotating cylinder, and the rotating cylinder is rotatably connected to the side guard plate, when the side of the vehicle tail is rear-ended, the rotation of the rotating cylinder can be controlled to hide the sensors, with higher use safety. By providing a support mechanism composed of first hydraulic cylinders, first pistons, first push rods, and rollers at both ends of the bottom of the support plate, and then cooperating with a hydraulic mechanism composed of a T-shaped pipe, a second piston, a second push rod, a limiting plate, a third spring, a second hydraulic cylinder, a third piston, a fourth spring, a third push rod, a through groove, and a connecting rod, when the side of the vehicle tail is rear-ended, the support mechanism at the other end far from the rear-end collision can be lifted, effectively avoiding the rollover of the vehicle. When the center of the vehicle tail is impacted, the two support mechanisms are lifted simultaneously to increase the protection effect of the vehicle tail and improve the use functionality of the device.

[0006] The object of the present invention can be achieved by adopting the following technical solutions: A safety detection structure for the driving of dangerous chemical vehicles, including a fixing plate, which is installed at the tail of the vehicle frame through bolts. A support plate is fixed to the side of the fixing plate. One end of the support plate away from the fixing plate is fixed with a U-shaped frame, and the U-shaped frame is parallel to the tail of the vehicle. Side guards are symmetrically arranged on both sides of the support plate, and the side guards protrude from the outer ends of the U-shaped frame. A wide-angle camera is installed at the middle position of the top of the side of the U-shaped frame away from the support plate. Distance sensors are installed at the bottom of the side of the U-shaped frame away from the support plate and on the side guards. Speed sensors are arranged on the sides of the distance sensors. An installation block is fixed at the middle position of the outside of the U-shaped frame. A controller is installed inside the installation block. A warning light is installed on the side of the installation block, and a horn is installed on the end face of the installation block. The output ends of the wide-angle camera, the distance sensors, and the speed sensors are all electrically connected to the controller through wires. The controller is connected to the warning light, the horn, and a display screen through wires. The display screen is installed inside the cab. Guide protection mechanisms are arranged at both ends of the outside of the U-shaped frame, a buffer protection mechanism is arranged on the side guards, and a support mechanism for preventing the vehicle from tipping over is arranged at the bottom of the support plate.

[0007] Preferably: Reflective tapes are evenly pasted on the top of the side of the U-shaped frame away from the support plate. Warning signs are installed at both ends of the top of the U-shaped frame. Light holes for cooperating with vehicle lights are evenly opened at both ends of the U-shaped frame.

[0008] Preferably: A bracket is installed between the sides of the display screen. The display screen is rotatably installed inside the bracket. A fixing strip is fixed to the top of the bracket, and the fixing strip is fixed to the inner top of the cab through bolts.

[0009] Preferably: The buffer protection mechanism includes a sliding plate, a sliding groove, a guide groove, a guide block, and a first spring. The sliding plate is fixed to the inner side of the side guard. Sliding grooves are symmetrically opened on both sides of the support plate. The end of the sliding plate is slidably arranged inside the sliding groove. Guide grooves are opened at the inner bottoms of the sliding grooves. The top of the guide groove is fixedly connected to the sliding plate. A first spring is arranged between one end of the guide groove away from the open end of the sliding groove and the guide block. A damper is arranged between the guide block and the end of the guide groove.

[0010] Preferably: An arc groove is opened on the outside of the side guard. The arc groove is perpendicular to the horizontal plane. A rotating cylinder is rotatably installed between the upper and lower ends of the arc groove. A torsion spring is arranged between the end of the rotating cylinder and the end of the arc groove. The distance sensors and speed sensors on the side guard are all fixed on the surface of the rotating cylinder.

[0011] Preferably: The guide protection mechanism includes a groove, a mounting plate, a guide roller, and a second spring. The groove is opened at both ends of the outside of the U-shaped frame. The mounting plate is slidably arranged inside the groove along the width direction. Guide rollers are evenly rotatably installed on the outside of the mounting plate, and the guide rollers protrude from the outside of the U-shaped frame. The guide rollers are perpendicular to the length direction of the U-shaped frame. A second spring is arranged between the mounting plate and the inner end of the groove. A damper is arranged between the middle position of the inside of the groove and the mounting plate.

[0012] Preferably: the supporting mechanism comprises a first hydraulic cylinder, a first piston, a guide groove and a roller, the first hydraulic cylinder is vertically installed on both sides of the bottom of the supporting plate, the first piston is slidably arranged inside the first hydraulic cylinder, the first push rod is fixed at the bottom end of the first piston, the bottom end of the first push rod is installed with a roller, and the top of the first hydraulic cylinder is provided with a hydraulic mechanism for controlling the extension and retraction of the first piston.

[0013] Preferably: the hydraulic mechanism includes a T-tube, a second piston, a second push rod, a limit plate, a third spring and a double-cylinder control assembly, the interior of the T-tube is filled with hydraulic oil, the T-tube is installed on both sides of the interior of the support plate, the through-hole on the side of the T-tube faces the slide groove, a second piston is slidably arranged inside the through-hole on the side of the T-tube, a second push rod is fixed to one end of the second piston close to the slide groove, a limit plate is vertically fixed to one end of the second push rod away from the second piston, the limit plate slides inside the slide groove, a spacing is left between the limit plate and the end of the slide plate, a third spring is provided between the limit plate and the outer side of the T-tube, one end of the T-tube is connected to the interior of the first hydraulic cylinder through a conduit, and the T-tube is connected to the interior of the first hydraulic cylinder on different sides of the bottom of the support plate, and a double-cylinder control assembly for simultaneously controlling the extension and retraction of the two groups of first push rods is provided between the ends of the two groups of T-tubes.

[0014] Preferably: the dual-cylinder control assembly includes a second hydraulic cylinder, a third piston, a fourth spring, a third push rod, a through groove and a connecting rod. A through groove is opened between the two groups of grooves. A connecting rod is slidably arranged inside the through groove along the width direction of the V-shaped frame. Both ends of the connecting rod are fixedly connected to the mounting plate. A second hydraulic cylinder is installed at the bottom of the inner side of the V-shaped frame. The end of the second hydraulic cylinder is connected to the end of the T-shaped tube through a pipeline. A third piston is slidably arranged inside the second hydraulic cylinder. A fourth spring is arranged between the third piston and the inner end of the second hydraulic cylinder. A third push rod is fixed to the end of the third piston away from the fourth spring. The third push rod passes through the inside of the through groove and is slidably connected to the V-shaped frame. A spacing is left between the end of the third push rod and the connecting rod.

[0015] The present invention also provides a method for detecting the driving safety of a hazardous chemical vehicle, comprising the following steps: Step 1: The wide-angle camera takes pictures of the obstacle vehicles in the same lane and side lanes behind the vehicle, and displays them clearly inside the cab using the display screen; Step 2: Use the distance sensor to measure the straight-line distance between the hazardous chemical vehicle and the obstacle vehicle directly behind and behind the side, and use the speed sensor to measure the speed difference between the obstacle vehicle and the hazardous chemical vehicle. Then transmit the data to the controller to determine whether the obstacle vehicle is moving towards the hazardous chemical vehicle. Step 3: When the obstacle moves toward the hazardous chemical vehicle, the speed difference between the obstacle vehicle and the hazardous chemical vehicle is compared with the warning distances under different speed differences in the controller's internal setting program to obtain the warning distances of obstacle vehicles at different moving speeds. After reaching the warning distance, the controller controls the warning light to sound and plays a prompt sound through the speaker. At the same time, the display screen displays a warning signal to remind the driver to avoid the obstacle.

[0016] The beneficial effects of the present invention are: The present invention provides a dangerous vehicle driving safety detection structure and safety detection method. By installing a wide-angle camera on the top of the yoke and using the display screen inside the front of the vehicle for display, a clear view of the rear of the vehicle can be provided. In addition, a distance sensor and a speed sensor are installed on the yoke and the side guard plate. During the driving of the target vehicle, the speed difference between the rear vehicle and the target vehicle can be detected, and the relative speed of the rear vehicle and the target vehicle can be determined based on this. The distance sensor is then used to detect the distance between the rear vehicle and the target vehicle. Then, according to the difference in relative speed between the rear vehicle and the target vehicle, the danger warning distance is adjusted and determined to ensure that the driving driver has sufficient reaction time. In addition, the warning light and the horn are used together to warn the rear vehicle, effectively reduce the occurrence of rear-end collisions, and improve driving safety. By providing a guide protection mechanism consisting of a groove, a mounting plate, a guide roller, and a second spring at both ends of the side of the shaped frame, it can not only guide the rear vehicle in the event of a rear-end collision, thereby reducing the damage to the target vehicle, but also provide buffering in the event of a rear-end collision, thereby reducing the instantaneous impact force and ensuring the stability of the vehicle. In addition, the distance sensor and the speed sensor are located between the two sets of guide protection mechanisms, thereby protecting the sensors. The arrangement of the sliding plate on the inner side of the side guard plate cooperates with the buffer protection mechanism composed of the slide groove, the guide groove, the guide block and the first spring, which can provide protection when the rear side of the vehicle is rear-ended, and the protection is more comprehensive and more practical. In addition, by installing the distance sensor and the speed sensor on the side guard plate on the rotating drum, and the rotating drum and the side guard plate are rotatably connected, when the rear side of the vehicle is rear-ended, the rotation of the rotating drum can be controlled, and the sensor can be hidden, which is safer to use. By arranging support mechanisms consisting of a first hydraulic cylinder, a first piston, a first push rod and a roller at both ends of the bottom of the support plate, and then cooperating with a hydraulic mechanism consisting of a T-tube, a second piston, a second push rod, a limit plate, a third spring, a second hydraulic cylinder, a third piston, a fourth spring, a third push rod, a through groove and a connecting rod, when the rear side of the vehicle is rear-ended, the support mechanism at the other end away from the rear-end collision can be propped up to effectively avoid the vehicle from rolling over. When the center of the rear of the vehicle is impacted, the two groups of support mechanisms are propped up at the same time, thereby increasing the protection effect of the rear of the vehicle and improving the functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a preferred embodiment of a hazardous vehicle driving safety detection structure and a safety detection method of the present invention; Figure 2 It is a cross-sectional view of a preferred embodiment of a hazardous vehicle driving safety detection structure and a safety detection method of the present invention; Figure 3 It is a cross-sectional view of a support plate of a preferred embodiment of a hazardous vehicle driving safety detection structure and a safety detection method of the present invention; Figure 4 A preferred embodiment of a hazardous vehicle driving safety detection structure and a safety detection method of the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 A support mechanism diagram of a preferred embodiment of a hazardous vehicle driving safety detection structure and a safety detection method of the present invention; Figure 6 It is a diagram of the internal disassembly structure of the side guard plate of a preferred embodiment of a hazardous vehicle driving safety detection structure and safety detection method of the present invention; Figure 7 It is a connecting rod installation structure diagram of a preferred embodiment of a hazardous vehicle driving safety detection structure and a safety detection method of the present invention; Figure 8 This is a control system diagram of a preferred embodiment of a hazardous vehicle driving safety detection structure and safety detection method of the present invention.

[0018] In the figure: 1, fixed plate; 2, support plate; 3, C-shaped frame; 4, side guard plate; 5, wide-angle camera; 6, distance sensor; 7, speed sensor; 8, mounting block; 9, controller; 10, warning light; 11, horn; 12, display screen; 13, bracket; 14, fixing strip; 15, warning sign; 16, lamp hole; 17, reflective tape; 18, guiding and protecting mechanism; 19, sliding plate; 20, sliding groove; 21, guide groove; 22, guide block; 23, first spring; 24, groove; 25, mounting plate; 26, guide roller; 27, second spring; 28, support mechanism; 29, first hydraulic cylinder; 30, first piston; 31, first push rod; 32, roller; 33, T-shaped pipe; 34, second piston; 35, second push rod; 36, limit plate; 37, third spring; 38, second hydraulic cylinder; 39, third piston; 40, fourth spring; 41, third push rod; 42, through groove; 43, connecting rod; 44, arc groove; 45, rotating cylinder; 46, torsion spring. Detailed implementation mode

[0019] To make the technical personnel in the technical field more clear and definite about the technical solution of the present invention, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings, but the implementation modes of the present invention are not limited thereto.

[0020] As Figure 1-Figure 8 shown, this embodiment provides a safety detection structure for the driving of dangerous chemical vehicles, including a fixed plate 1, the fixed plate 1 is installed at the tail of the vehicle frame by bolts, a support plate 2 is fixed on the side of the fixed plate 1, a C-shaped frame 3 is fixed at one end of the support plate 2 away from the fixed plate 1, the C-shaped frame 3 is parallel to the tail of the vehicle, side guard plates 4 are symmetrically arranged on both sides of the support plate 2, and the side guard plates 4 protrude at the outer end of the C-shaped frame 3. A wide-angle camera 5 is installed at the middle position of the top of the side of the C-shaped frame 3 away from the support plate 2. Distance sensors 6 are installed at the bottom of the side of the C-shaped frame 3 away from the support plate 2 and on the side guard plates 4. Speed sensors 7 are arranged on the sides of the distance sensors 6. A mounting block 8 is fixed at the middle position outside the C-shaped frame 3. A controller 9 is installed inside the mounting block 8. A warning light 10 is installed on the side of the mounting block 8. A horn 11 is installed on the end face of the mounting block 8. The output ends of the wide-angle camera 5, the distance sensors 6, and the speed sensors 7 are all electrically connected to the controller 9 through wires. The controller 9 is connected to the warning light 10, the horn 11, and the display screen 12 through wires. The display screen 12 is installed inside the cab. Guiding and protecting mechanisms 18 are arranged at both ends of the outside of the C-shaped frame 3. A buffer protection mechanism is arranged on the side guard plates 4. A support mechanism 28 for preventing the vehicle from tipping over is arranged at the bottom of the support plate 2.

[0021] Overall working principle: By installing a wide-angle camera 5 at the top of the C-shaped frame 3 and using the display screen 12 inside the vehicle head for display, a clear view of the rear of the vehicle can be provided. Additionally, distance sensors 6 and speed sensors 7 are installed on the C-shaped frame 3 and the side guard plate 4. During the driving of the target vehicle, the speed difference between the rear vehicle and the target vehicle can be detected, and based on this, the relative speed between the rear vehicle and the target vehicle can be determined. Then, the distance sensor 6 is used to detect the distance between the rear vehicle and the target vehicle. Subsequently, according to the different relative speeds of the rear vehicle and the target vehicle, the dangerous warning distance is adjusted and determined to ensure that the driver has sufficient reaction time. Additionally, when used in conjunction with the warning light 10 and the horn 11, it can prompt the rear vehicle, effectively reducing the occurrence of rear-end collisions and improving driving safety. By providing a guiding and protecting mechanism 18 composed of grooves 24, mounting plates 25, guide rollers 26, and second springs 27 at both ends of the side of the C-shaped frame 3, not only can the rear vehicle be guided in the event of a rear-end collision to reduce the damage to the target vehicle, but also it can buffer in the event of a rear-end collision to reduce the instantaneous impact force and ensure the stability of the vehicle. Additionally, the distance sensor 6 and the speed sensor 7 are located between the two guiding and protecting mechanisms 18, which can protect the sensors. The buffer and protection mechanism composed of the sliding plate 19 inside the side guard plate 4, the sliding groove 20, the guide groove 21, the guide block 22, and the first spring 23 can provide protection when the side of the vehicle tail is rear-ended, with more comprehensive protection and higher practicality. Additionally, by installing the distance sensor 6 and the speed sensor 7 on the side guard plate 4 on the rotating cylinder 45, and the rotating cylinder 45 is rotatably connected to the side guard plate 4, when the side of the vehicle tail is rear-ended, the rotation of the rotating cylinder 45 can be controlled to hide the sensors, with higher use safety. By providing a support mechanism 28 composed of first hydraulic cylinders 29, first pistons 30, first push rods 31, and rollers 32 at both ends of the bottom of the support plate 2, and in cooperation with a hydraulic mechanism composed of a T-shaped pipe 33, second pistons 34, second push rods 35, limit plates 36, third springs 37, second hydraulic cylinders 38, third pistons 39, fourth springs 40, third push rods 41, through grooves 42, and connecting rods 43, when the side of the vehicle tail is rear-ended, the support mechanism 28 at the other end away from the rear-end collision can be lifted, effectively preventing the vehicle from rolling over. When the center of the vehicle tail is impacted, the two support mechanisms 28 are lifted simultaneously to increase the protection effect of the vehicle tail and improve the use functionality of the device.

[0022] In this embodiment, reflective tapes 17 are evenly pasted on the top of the side of the C-shaped frame 3 away from the support plate 2. Warning signs 15 are installed at both ends of the top of the C-shaped frame 3. Light holes 16 matching the vehicle lights are evenly opened at both ends of the C-shaped frame 3.

[0023] Partial working principle: The reflective tape 17 and the warning sign 15 can have a certain prompting effect during driving, so that the rear driver can observe.

[0024] In this embodiment, a bracket 13 is installed between the sides of the display screen 12, and the display screen 12 is rotatably installed inside the bracket 13. A fixing bar 14 is fixed to the top of the bracket 13, and the fixing bar 14 is fixed to the inner top of the cab by bolts.

[0025] Partial working principle: the display screen 12 is installed inside the cab, and the display screen 12 is rotatably connected to the bracket 13, so that the angle of the display screen 12 can be adjusted to facilitate the driver's observation.

[0026] In this embodiment, the buffer protection mechanism includes a slide plate 19, a slide groove 20, a guide groove 21, a guide block 22 and a first spring 23. The slide plate 19 is fixed to the inner side of the side guard plate 4. The slide grooves 20 are symmetrically provided on both sides of the support plate 2. The ends of the slide plate 19 are slidably arranged inside the slide grooves 20. The inner bottom of the slide grooves 20 are provided with guide grooves 21. The top of the guide groove 21 is fixedly connected to the slide plate 19. A first spring 23 is provided between the end of the guide groove 21 away from the opening of the slide groove 20 and the guide block 22. A damper is provided between the guide block 22 and the end of the guide groove 21.

[0027] Local working principle: When the rear side of a hazardous chemical vehicle is rear-ended, it will directly contact the side guard plate 4 and squeeze the side guard plate 4. At this time, the slide plate 19 will be controlled to slide toward the inside of the slide groove 20. Under the buffering force of the first spring 23, the instantaneous impact force is reduced. The use of the damper can avoid the reciprocating shaking of the side guard plate 4.

[0028] In this embodiment, an arc groove 44 is provided on the outer side of the side guard plate 4, and the arc groove 44 is perpendicular to the horizontal plane. A rotating drum 45 is rotatably installed between the upper and lower ends of the arc groove 44, and a torsion spring 46 is provided between the end of the rotating drum 45 and the end of the arc groove 44. The distance sensor 6 and the speed sensor 7 on the side guard plate 4 are both fixed on the surface of the rotating drum 45.

[0029] Local working principle: the distance sensor 6 and the speed sensor 7 located on the side guard plate 4 are both fixed on the rotating drum 45. When the side guard plate 4 is impacted, the vehicle will contact the rotating drum 45, exerting a rotational force on the rotating drum 45, hiding the sensors inside the arc groove 44 to protect the sensors.

[0030] In this embodiment, the guiding and protecting mechanism 18 includes a groove 24, a mounting plate 25, a guide roller 26 and a second spring 27. The grooves 24 are opened at both ends outside the U-shaped frame 3. A mounting plate 25 is slidably arranged inside the groove 24 along the width direction. Guide rollers 26 are evenly and rotatably mounted on the outer side of the mounting plate 25, and the protrusions of the guide rollers 26 are outside the U-shaped frame 3. The guide rollers 26 are perpendicular to the length direction of the U-shaped frame 3. A second spring 27 is arranged between the mounting plate 25 and the inner end of the groove 24. A damper is arranged between the middle position inside the groove 24 and the mounting plate 25.

[0031] Local working principle: When the rear of the vehicle is rear-ended, it will first contact the guide roller 26 on the outer side of the mounting plate 25, and then use the second spring 27 for buffering. At the same time, the surface of the guide roller 26 is smooth and rotatable, so it can unload the force and reduce the impact force.

[0032] In this embodiment, the supporting mechanism 28 includes a first hydraulic cylinder 29, a first piston 30, a guide groove 21 and a roller 32. The first hydraulic cylinders 29 are vertically installed on both sides of the bottom of the support plate 2. First pistons 30 are slidably arranged inside the first hydraulic cylinders 29. First push rods 31 are fixed to the bottom ends of the first pistons 30. Rollers 32 are installed at the bottom ends of the first push rods 31. A hydraulic mechanism for controlling the expansion and contraction of the first piston 30 is arranged at the top of the first hydraulic cylinder 29.

[0033] Local working principle: When the vehicle is rear-ended, if the side guard plate 4 is rear-ended, at this time, the supporting mechanism 28 away from the rear-ended side is controlled by the hydraulic mechanism to lift, so that the roller 32 at the bottom end of the first push rod 31 contacts the road surface, increasing the body support effect on the opposite side of the impact side. If the rear of the vehicle is rear-ended, the hydraulic mechanism can extend the two groups of supporting mechanisms 28 at the same time to form a protection behind the vehicle, improving the protection effect.

[0034] In this embodiment, the hydraulic mechanism includes a T-shaped pipe 33, a second piston 34, a second push rod 35, a limiting plate 36, a third spring 37 and a double-cylinder control component. The inside of the T-shaped pipe 33 is filled with hydraulic oil. The T-shaped pipes 33 are installed on both sides inside the support plate 2. The through holes on the side of the T-shaped pipe 33 face the sliding groove 20. A second piston 34 is slidably arranged inside the through hole on the side of the T-shaped pipe 33. A second push rod 35 is fixed to the end of the second piston 34 close to the sliding groove 20. A limiting plate 36 is perpendicularly fixed to the end of the second push rod 35 away from the second piston 34. The limiting plate 36 slides inside the sliding groove 20. A gap is left between the limiting plate 36 and the end of the sliding plate 19. A third spring 37 is arranged between the limiting plate 36 and the outside of the T-shaped pipe 33. One end of the T-shaped pipe 33 is communicated with the inside of the first hydraulic cylinder 29 through a conduit, and the T-shaped pipe 33 is communicated with the inside of the first hydraulic cylinders 29 on different sides of the bottom of the support plate 2. A double-cylinder control component for simultaneously controlling the expansion and contraction of the two groups of first push rods 31 is arranged between the ends of the two groups of T-shaped pipes 33.

[0035] Local working principle: when the side guard plate 4 is subjected to impact force, the slide plate 19 slides toward the inside of the slide groove 20. If the impact force is small, the slide plate 19 will not squeeze the limit plate 36, and the hydraulic mechanism will not start. If the impact force is large, the slide plate 19 will squeeze the limit plate 36, and the second push rod 35 on the limit plate 36 will move the second piston 34 toward the inside of the T-tube 33, reduce the volume inside the T-tube 33, and push the internal hydraulic oil into the first hydraulic cylinder 29 to push out the first push rod 31 to support the vehicle. If the rear of the vehicle is subjected to a large impact, the dual-cylinder control assembly is used to simultaneously inject hydraulic oil into the T-tube 33 to push out the first push rods 31 in the two sets of support mechanisms 28.

[0036] In this embodiment, the dual-cylinder control component includes a second hydraulic cylinder 38, a third piston 39, a fourth spring 40, a third push rod 41, a through groove 42 and a connecting rod 43. A through groove 42 is opened between the two groups of grooves 24. A connecting rod 43 is slidably arranged inside the through groove 42 along the width direction of the T-shaped frame 3. Both ends of the connecting rod 43 are fixedly connected to the mounting plate 25. A second hydraulic cylinder 38 is installed at the bottom of the inner side of the T-shaped frame 3. The end of the second hydraulic cylinder 38 is connected to the end of the T-shaped tube 33 through a pipeline. A third piston 39 is slidably arranged inside the second hydraulic cylinder 38. A fourth spring 40 is arranged between the third piston 39 and the inner end of the second hydraulic cylinder 38. A third push rod 41 is fixed to the end of the third piston 39 away from the fourth spring 40. The third push rod 41 passes through the inside of the through groove 42 and is slidably connected to the T-shaped frame 3. A spacing is left between the end of the third push rod 41 and the connecting rod 43.

[0037] Local working principle: when the impact force applied to the mounting plate 25 is small, the connecting rod 43 will not contact the third push rod 41. If the impact force is large, the mounting plate 25 will move significantly, and the connecting rod 43 will squeeze the third push rod 41. The third piston 39 at the end of the third push rod 41 slides inside the second hydraulic cylinder 38, squeezing the hydraulic oil inside the second hydraulic cylinder 38 into the inside of the T-tube 33, thereby controlling the extension of the support mechanism 28.

[0038] like Figure 1-Figure 8 As shown, this embodiment provides a method for detecting the driving safety of hazardous vehicles as follows: Step 1: The wide-angle camera 5 takes a picture of the obstacle vehicles in the same lane and the side lane behind the vehicle, and displays them clearly inside the cab using the display screen 12; Step 2: Use the distance sensor 6 to measure the straight-line distance between the hazardous chemical vehicle and the obstacle vehicle directly behind and behind the side, and use the speed sensor 7 to measure the speed difference between the obstacle vehicle and the hazardous chemical vehicle, and then transmit the data to the inside of the controller 9 to determine whether the obstacle vehicle is moving towards the hazardous chemical vehicle; Step 3: When the obstacle moves toward the hazardous chemical vehicle, the speed difference between the obstacle vehicle and the hazardous chemical vehicle is compared with the warning distance under different speed differences in the internal setting program of the controller 9 to obtain the warning distance of the obstacle vehicle with different moving speeds. After reaching the warning distance, the controller 9 controls the warning light 10 to sound and plays a prompt sound through the speaker 11. At the same time, the display screen 12 displays a warning signal to remind the driver to avoid it.

[0039] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A hazardous chemical vehicle driving safety detection structure, comprising a fixing plate (1), characterized in that: The fixing plate (1) is installed at the rear of the vehicle frame through bolts. A support plate (2) is fixed to the side of the fixing plate (1). One end of the support plate (2) away from the fixing plate (1) is fixed with a U-shaped frame (3). The U-shaped frame (3) is parallel to the rear of the vehicle. Side guard plates (4) are symmetrically arranged on both sides of the support plate (2), and the side guard plates (4) protrude from the outer end of the U-shaped frame (3). A wide-angle camera (5) is installed at the middle position of the top of the side of the U-shaped frame (3) away from the support plate (2). Distance sensors (6) are installed on the bottom of the side of the U-shaped frame (3) away from the support plate (2) and on the side guard plates (4). Speed sensors (7) are arranged on the sides of the distance sensors (6). An installation block (8) is fixed at the middle position outside the U-shaped frame (3). A controller (9) is installed inside the installation block (8). A warning light (10) is installed on the side of the installation block (8). A horn (11) is installed on the end face of the installation block (8). The output ends of the wide-angle camera (5), the distance sensors (6), and the speed sensors (7) are all electrically connected to the controller (9) through wires. The controller (9) is connected to the warning light (10), the horn (11), and a display screen (12) through wires. The display screen (12) is installed inside the cab. Guide and protection mechanisms (18) are arranged at both ends of the outside of the U-shaped frame (3). A buffer protection mechanism is arranged on the side guard plates (4). A support mechanism (28) for preventing the vehicle from tipping over is arranged at the bottom of the support plate (2).

2. A hazardous chemical vehicle driving safety detection structure according to claim 1, characterized in that: Reflective tapes (17) are evenly pasted on the top of the side of the U-shaped frame (3) away from the support plate (2). Warning signs (15) are installed at both ends of the top of the U-shaped frame (3). Light holes (16) for cooperating with vehicle lights are evenly opened at both ends of the U-shaped frame (3).

3. A hazardous chemical vehicle driving safety detection structure according to claim 2, characterized in that: A bracket (13) is installed between the sides of the display screen (12). The display screen (12) is rotatably installed inside the bracket (13). A fixing strip (14) is fixed to the top of the bracket (13). The fixing strip (14) is fixed to the inner top of the cab through bolts.

4. A hazardous chemical vehicle driving safety detection structure according to claim 3, characterized in that: The buffer protection mechanism includes a sliding plate (19), a sliding groove (20), a guide groove (21), a guide block (22), and a first spring (23). The sliding plate (19) is fixed to the inner side of the side guard plate (4). Sliding grooves (20) are symmetrically opened on both sides of the support plate (2). The end of the sliding plate (19) is slidably arranged inside the sliding groove (20). Guide grooves (21) are opened at the inner bottom of the sliding groove (20). The top of the guide groove (21) is fixedly connected to the sliding plate (19). A first spring (23) is arranged between one end of the guide groove (21) away from the open end of the sliding groove (20) and the guide block (22). A damper is arranged between the guide block (22) and the end of the guide groove (21).

5. A hazardous chemical vehicle driving safety detection structure according to claim 4, characterized in that: An arc-shaped groove (44) is opened on the outside of the side guard plate (4). The arc-shaped groove (44) is perpendicular to the horizontal plane. A rotating cylinder (45) is rotatably installed between the upper and lower ends of the arc-shaped groove (44). A torsion spring (46) is arranged between the end of the rotating cylinder (45) and the end of the arc-shaped groove (44). The distance sensors (6) and the speed sensors (7) on the side guard plate (4) are all fixed on the surface of the rotating cylinder (45).

6. A hazardous chemical vehicle driving safety detection structure according to claim 5, characterized in that: The guiding and protecting mechanism (18) includes a groove (24), a mounting plate (25), a guide roller (26) and a second spring (27). The grooves (24) are formed at both ends of the outer side of the U-shaped frame (3). A mounting plate (25) is slidably arranged inside the groove (24) along the width direction. Guide rollers (26) are evenly rotatably mounted on the outer side of the mounting plate (25), and the guide rollers (26) protrude outside the U-shaped frame (3). The guide rollers (26) are perpendicular to the length direction of the U-shaped frame (3). A second spring (27) is arranged between the inner end of the mounting plate (25) and the groove (24). A damper is arranged between the middle position inside the groove (24) and the mounting plate (25).

7. A hazardous chemical vehicle driving safety detection structure according to claim 6, characterized in that: The supporting mechanism (28) includes a first hydraulic cylinder (29), a first piston (30), a guide groove (21) and a roller (32). The first hydraulic cylinders (29) are vertically mounted on both sides of the bottom of the support plate (2). First pistons (30) are slidably arranged inside the first hydraulic cylinders (29). First push rods (31) are fixed to the bottom ends of the first pistons (30). Rollers (32) are mounted at the bottom ends of the first push rods (31). A hydraulic mechanism for controlling the expansion and contraction of the first piston (30) is arranged at the top of the first hydraulic cylinder (29).

8. A hazardous chemical vehicle driving safety detection structure according to claim 7, characterized in that: The hydraulic mechanism includes a T-shaped pipe (33), a second piston (34), a second push rod (35), a limiting plate (36), a third spring (37) and a double-cylinder control component. The inside of the T-shaped pipe (33) is filled with hydraulic oil. The T-shaped pipes (33) are mounted on both sides inside the support plate (2). The through openings on the sides of the T-shaped pipes (33) face the sliding grooves (20). Second pistons (34) are slidably arranged inside the through openings on the sides of the T-shaped pipes (33). A second push rod (35) is fixed to the end of the second piston (34) close to the sliding groove (20). A limiting plate (36) is perpendicularly fixed to the end of the second push rod (35) away from the second piston (34). The limiting plate (36) slides inside the sliding groove (20). A gap is left between the limiting plate (36) and the end of the sliding plate (19). A third spring (37) is arranged between the limiting plate (36) and the outer side of the T-shaped pipe (33). One end of the T-shaped pipe (33) is communicated with the inside of the first hydraulic cylinder (29) through a conduit, and the T-shaped pipe (33) is communicated with the inside of the first hydraulic cylinders (29) on different sides of the bottom of the support plate (2). A double-cylinder control component for simultaneously controlling the expansion and contraction of the two first push rods (31) is arranged between the ends of the two T-shaped pipes (33).

9. A hazardous chemical vehicle driving safety detection structure according to claim 8, characterized in that: The double-cylinder control assembly includes a second hydraulic cylinder (38), a third piston (39), a fourth spring (40), a third push rod (41), a through groove (42) and a connecting rod (43). A through groove (42) is formed between two sets of grooves (24). A connecting rod (43) is slidably arranged inside the through groove (42) along the width direction of the U-shaped frame (3). Both ends of the connecting rod (43) are fixedly connected to the mounting plate (25). The second hydraulic cylinder (38) is installed at the bottom inside the U-shaped frame (3). The end of the second hydraulic cylinder (38) is communicated with the end of the T-shaped pipe (33) through a pipeline. A third piston (39) is slidably arranged inside the second hydraulic cylinder (38). A fourth spring (40) is arranged between the third piston (39) and the inner end of the second hydraulic cylinder (38). A third push rod (41) is fixed to the end of the third piston (39) away from the fourth spring (40). The third push rod (41) penetrates into the inside of the through groove (42) and is slidably connected to the U-shaped frame (3). A gap is left between the end of the third push rod (41) and the connecting rod (43).

10. A method for detecting the driving safety of a hazardous chemical vehicle, based on a driving safety detection structure for a hazardous chemical vehicle according to any one of claims 1 to 9, characterized in that: It includes the following steps: Step 1: The wide-angle camera (5) takes pictures of the obstacle vehicles in the same lane and the side lanes behind the vehicle, and clearly displays them inside the cab by using the display screen (12). Step 2: The distance sensor (6) measures the straight-line distance between the hazardous chemical vehicle and the obstacle vehicle directly behind and at the side rear, and the speed sensor (7) measures the speed difference between the obstacle vehicle and the hazardous chemical vehicle. Then the data is transmitted to the inside of the controller (9) to determine whether the obstacle vehicle is moving towards the hazardous chemical vehicle. Step 3: When the obstacle moves towards the hazardous chemical vehicle, the size of the speed difference between the obstacle vehicle and the hazardous chemical vehicle is compared with the warning distances at different speed differences in the preset program inside the controller (9) to obtain the warning distances of the obstacle vehicles with different moving speeds. After reaching the warning distance, the controller (9) controls the warning light (10) to sound, plays a prompt tone through the speaker (11), and at the same time the display screen (12) displays a warning signal to remind the driver to avoid.

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