Truck tail rear-end collision prevention detection device

Abstract

The invention provides a truck tail rear-end collision prevention detection device, and relates to the technical field of auxiliary vehicle driving, the truck tail rear-end collision prevention detection device comprises a vehicle body, the parking space part of the vehicle body is fixedly provided with a mounting bin, the inner side of the mounting bin is fixedly provided with a detection mechanism, and the inner wall of the mounting bin is fixedly connected with two buffer mechanisms. The whole detection mechanism is installed on the inner side of the installation bin, a camera, a laser radar and a millimeter wave radar array in the detection device body face the rear portion of the vehicle body, and the speed and the state of a vehicle behind the vehicle body and the distance between the vehicle behind the vehicle body are detected. The detection device body can send a signal to the ADAS system of the vehicle body, so that the ADAS system can respond in time to adjust the state of the vehicle, the effect of preventing rear-end collision is achieved, and the problems that an existing vehicle is insufficient in rear safety detection and low in monitoring capacity for the dynamic condition of the rear of the vehicle during high-speed driving are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of auxiliary vehicle driving, and more specifically, particularly relates to a truck rear end anti-rear-end collision detection device. Background Art

[0002] With the rapid development of the automobile industry and the increasing complexity of road traffic conditions, vehicle driving safety has become a vital issue. Among the many technologies to ensure driving safety, the existing monitoring devices are mainly advanced driver assistance systems (ADAS), which play a key role. At present, ADAS systems are widely used in the front of vehicles. For example, adaptive cruise control (ACC), forward collision warning (FCW), lane departure warning (LDW) and other functions are all based on sensors installed on the front of the vehicle. These systems detect and analyze the road conditions, other vehicles and obstacles in front of the vehicle through sensors such as radar and cameras, providing the driver with important driving assistance information, effectively reducing the occurrence of front collision accidents, and improving driving comfort and safety.

[0003] Currently, most of the existing advanced driver assistance systems (ADAS) use the following technologies:

[0004] Sensor technologies, including millimeter-wave radar, lidar, ultrasonic sensors, and cameras;

[0005] Chip and processor technologies, including high-performance chips and deep learning processors;

[0006] Software algorithms and data processing technology, target detection and recognition algorithms, data fusion algorithms, and path planning and decision-making algorithms;

[0007] Communication technology, including vehicle network communication, all components in the ADAS system need to communicate and transmit data through the vehicle network, such as the controller area network (CAN) bus, Ethernet, etc. These network communication technologies can achieve high-speed and stable data interaction between sensors, processors, actuators and other devices, ensuring that the various functional modules of the ADAS system can work together.

[0008] With the development of the economy, the number of trucks and cars has increased at the same time. The accident rate of cars rear-ending trucks is relatively high. Due to the extremely poor compatibility of the two, the consequences of the collision are extremely serious. The rear-end collision often results in the destruction of the vehicle and the death of people. In many cases, when trucks are driving, the safety monitoring of the rear of the truck uses traditional reversing radar. Although it can detect obstacles within a certain distance behind the vehicle when reversing, its function is relatively simple, the detection range is limited, and most of them can only provide simple distance prompts. It is insufficient to monitor the dynamic situation behind the vehicle when driving at high speed.

[0009] Therefore, the existing structure and defects are studied and improved, and a truck rear-end anti-rear-end collision detection device is provided. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides a truck rear end anti-rear-end collision detection device to solve the above problems.

[0011] A truck rear-end collision prevention detection device comprises a vehicle body, a mounting chamber is fixedly arranged on the parking space of the vehicle body, a detection mechanism is fixedly installed on the inner side of the mounting chamber, two buffer mechanisms are fixedly connected to the inner wall of the mounting chamber, both buffer mechanisms are in contact with the detection mechanism, a heat dissipation mechanism is arranged at the bottom of the mounting chamber, the detection mechanism comprises a detection device body, a rubber protective cover and a polytetrafluoroethylene protective shell, the detection device body comprises a camera, a laser radar and a millimeter wave radar array, the buffer mechanism comprises a contact plate, the heat dissipation mechanism comprises a heat dissipation fan, and the heat dissipation fan is electrically connected to an ECU of the vehicle body.

[0012] Preferably, the outer wall of the detection device body is fixedly connected with a rubber protective sleeve, which surrounds the four sides of the detection device body. The rubber protective sleeve is fixedly connected with a polytetrafluoroethylene protective shell, and the upper and lower ends of the polytetrafluoroethylene protective shell away from the rubber protective sleeve are fixedly connected with three connecting parts.

[0013] Preferably, a polytetrafluoroethylene protective shell surrounds one end of the detection device body on which a camera, a laser radar and a millimeter-wave radar array are installed, and one end of the detection device body away from the polytetrafluoroethylene protective shell is fixedly connected to a metal heat spreader, and a side of the metal heat spreader away from the detection device body is fixedly connected to a plurality of metal cooling fins, and both ends of the metal heat spreader away from the detection device body are fixedly connected to force unloading push plates, and the two force unloading push plates are both L-shaped.

[0014] Preferably, a flexible circuit is fixedly connected to the bottom of the detection device body, and a circuit plug is fixedly connected to one end of the flexible circuit away from the detection device body.

[0015] Preferably, a circuit socket is fixedly installed on the inner wall of the installation compartment away from the opening end, the circuit socket is electrically connected to the ADAS system of the vehicle body, the circuit plug is adapted to the circuit socket, and the detection device body is electrically connected to the ADAS system of the vehicle body through a flexible circuit, a circuit plug and a circuit socket.

[0016] Preferably, the upper and lower inner side walls of the open end of the vehicle body are each provided with three bolt mounting holes, the top surface of the mounting bin is provided with a heat dissipation vent, and the inner side of the heat dissipation vent is fixedly connected with a first dustproof net.

[0017] Preferably, two T-shaped slide grooves are provided on the inner bottom surface and the inner top surface of the installation bin, a heat dissipation outlet is fixedly provided on the bottom surface of the installation bin, a second dustproof net is fixedly connected to the inner side of the heat dissipation outlet, a heat dissipation fan is fixedly connected to the heat dissipation outlet, and the heat dissipation fan is located below the second dustproof net.

[0018] Preferably, both ends of the contact plate are fixedly connected with T-shaped sliders, and three buffer springs are fixedly connected to the side of the contact plate away from the opening of the installation bin, and hydraulic damping rods are arranged on the inner sides of the three buffer springs, and the three hydraulic damping rods are fixedly connected to the contact plate, and the hydraulic damping rod and the end of the buffer spring away from the contact plate are fixedly connected to the inner wall of the installation bin.

[0019] Preferably, the six connecting parts fixedly connected to the polytetrafluoroethylene protective shell respectively correspond to the six bolt mounting holes opened on the upper and lower inner walls of the installation bin, and the six connecting parts are all threadedly sleeved with fixing bolts, and the six fixing bolts pass through one end of the connecting parts and are respectively threadedly connected to the six bolt mounting holes.

[0020] Preferably, the T-shaped sliding blocks fixedly connected at both ends of the two contact plates are respectively slidably connected to four T-shaped sliding grooves provided on the inner wall of the installation bin.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, a detection device body is provided, and the detection mechanism is installed as a whole on the inner side of the installation bin. The camera, laser radar and millimeter-wave radar array in the detection device body are oriented toward the rear of the vehicle body to detect the speed, state and distance between the vehicle behind the vehicle body and the vehicle body. If the rear vehicle approaches rapidly, the detection device body can send a signal to the ADAS system of the vehicle body through a flexible circuit, a circuit plug and a circuit socket, so that the ADAS system can respond in time to adjust the vehicle state (for example, tightening the seat belt, powering off and adjusting the seat posture, etc.), thereby preventing rear-end collisions, solving the problems of insufficient safety detection of the existing vehicles to the rear and low monitoring capability of the dynamic situation of the rear of the vehicle when driving at high speed.

[0023] In the present invention, by providing a heat dissipation mechanism, the heat generated by the detection device body will be transferred to the metal cooling fins through the metal heat spreader. During the driving process of the vehicle body, the ADAS system controls the detection device body to automatically open, and automatically controls the cooling fan to start through the ECU. The cooling fan draws air inside the installation compartment through the heat dissipation outlet, thereby taking away the heat output by the metal cooling fins. The heat dissipation air vents have a ventilation effect, so that the present application has the effect of quickly dissipating the heat of the detection device body, and the present application has good heat dissipation performance.

[0024] In the present invention, by providing a buffer mechanism, when the vehicle body is rear-ended, the detection mechanism will also be impacted. If the detection mechanism is directly impacted, the detection device body is likely to be directly damaged. If the detection mechanism is not directly impacted, when the vehicle body is rear-ended, the detection device body will move toward the inside of the installation bin along with the impact force of the impact (the polytetrafluoroethylene protective shell is fixed to the bolt mounting hole provided in the installation bin through a connecting piece and a fixing bolt, and the polytetrafluoroethylene protective shell is fixedly connected to the rubber protective cover, and the rubber protective cover itself has the ductility to move. When the detection device body moves along with the impact force of the impact When the impact force moves, the rubber protective cover will be pulled and stretched, and at the same time, the polytetrafluoroethylene protective shell is fixed to the installation bin, so the position of the polytetrafluoroethylene protective shell remains unchanged). At this time, the force unloading push plate will push the contact plate to move toward the direction of the hydraulic damping rod. The hydraulic damping rod and the buffer spring can play a buffering effect at this time. At the same time, the rubber protective cover can also play a certain buffering effect, which can greatly protect the safety of the detection device body and avoid damage to the detection device body due to impact, so that the detection device body of the present application has better anti-impact performance, and thus the detection device body of the present application has better safety.

[0025] In the present invention, by providing a rubber protective cover, during the driving process of the vehicle, bumps may occur due to the influence of the road surface. During this process, the rubber protective cover surrounding the detection device body can have a good shock-absorbing effect, so that the operating stability of the detection device body is greatly enhanced. At the same time, due to its material characteristics, the rubber protective cover can have a sealing effect between the gap between the detection device body and the installation bin, increase the waterproof performance, and prevent rainwater from flowing into the interior of the installation bin through the gap between the detection device body and the installation bin, affecting the connection between the circuit plug and the circuit socket, so that the detection device body of the present application has good shock-absorbing and waterproof performance, and thus the detection device body of the present application has higher stability.

[0026] In the present invention, by providing a detachable structure, when the detection device body of the present application is damaged, Mark removes the six fixing bolts from the bolt mounting holes and the connecting parts. At this time, the entire detection mechanism can be moved out of the installation bin as a whole, and the detection mechanism as a whole can be repaired separately, so that the present application has the effect of being easy to repair and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic side view of the structure of the present invention as a whole;

[0028] Figure 2 It is a partial structural schematic diagram of the rear part of the truck in the present invention;

[0029] Figure 3 It is a schematic diagram of the side view structure of the overall detection mechanism of the present invention;

[0030] Figure 4It is a schematic diagram of the explosion structure of the overall detection mechanism of the present invention;

[0031] Figure 5 It is a schematic diagram of the overall structure of the detection mechanism and buffer mechanism of the present invention;

[0032] Figure 6 It is a schematic diagram of the overall installation bin structure of the present invention when viewed from above;

[0033] Figure 7 It is a schematic diagram of the side view structure of the overall installation bin of the present invention;

[0034] Figure 8 It is a schematic diagram of the enlarged structure of the overall removal detection mechanism of the present invention;

[0035] Fig. 9 It is a schematic diagram of the front view structure of the installation bin of the present invention as a whole;

[0036] Fig.10 It is a schematic diagram of the exploded rear view structure of the detection mechanism of the present invention as a whole;

[0037] Fig.11 It is a schematic diagram of the overall buffer mechanism structure of the present invention.

[0038] In the figure, the correspondence between the component names and the figure numbers is: 1. Vehicle body; 2. Detection mechanism; 3. Buffer mechanism; 4. Cooling fan; 5. Fixing bolt; 101. Installation compartment; 102. Bolt installation hole; 103. Heat dissipation vent; 104. First dustproof net; 105. T-shaped slide groove; 106. Heat dissipation outlet; 107. Second dustproof net; 108. Circuit socket; 201. Detection device body; 202. Rubber protective cover; 203. Polytetrafluoroethylene protective shell; 204. Connector; 205. Metal heat spreader; 206. Metal cooling fin; 207. Unloading push plate; 208. Flexible circuit; 209. Circuit plug; 301. Contact plate; 302. T-shaped slider; 303. Hydraulic damping rod; 304. Buffer spring; 601. Camera; 602. LiDAR; 603. Millimeter wave radar array. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] Example:

[0041] See also Figure 1-11The present invention provides a truck rear-end collision prevention detection device, comprising a vehicle body 1, a mounting chamber 101 is fixedly provided on the parking space of the vehicle body 1, a detection mechanism 2 is fixedly installed on the inner side of the mounting chamber 101, two buffer mechanisms 3 are fixedly connected to the inner wall of the mounting chamber 101, both buffer mechanisms 3 are in contact with the detection mechanism 2, a heat dissipation mechanism is provided at the bottom of the mounting chamber 101, the detection mechanism 2 comprises a detection device body 201, a rubber protective cover 202 and a polytetrafluoroethylene protective shell 203, the detection device body 201 comprises a camera 601, a laser radar 602 and a millimeter wave radar array 603, the buffer mechanism 3 comprises a contact plate 301, the heat dissipation mechanism comprises a heat dissipation fan 4, and the heat dissipation fan 4 is electrically connected to the ECU of the vehicle body 1.

[0042] The outer wall of the detection device body 201 is fixedly connected with a rubber protective sleeve 202, which surrounds the four sides of the detection device body 201. The rubber protective sleeve 202 is fixedly connected with a polytetrafluoroethylene protective shell 203, and the upper and lower ends of the polytetrafluoroethylene protective shell 203 away from the rubber protective sleeve 202 are fixedly connected with three connecting parts 204.

[0043] The polytetrafluoroethylene protective shell 203 surrounds one end of the detection device body 201 on which the camera 601, the laser radar 602 and the millimeter wave radar array 603 are installed. The end of the detection device body 201 away from the polytetrafluoroethylene protective shell 203 is fixedly connected to a metal heat spreader 205. A side of the metal heat spreader 205 away from the detection device body 201 is fixedly connected to a plurality of metal cooling fins 206. Both ends of the side of the metal heat spreader 205 away from the detection device body 201 are fixedly connected to force unloading push plates 207, and the two force unloading push plates 207 are both L-shaped.

[0044] A flexible circuit 208 is fixedly connected to the bottom of the detection device body 201 , and a circuit plug 209 is fixedly connected to one end of the flexible circuit 208 away from the detection device body 201 .

[0045] A circuit socket 108 is fixedly installed on the inner wall of the installation compartment 101 away from the opening end. The circuit socket 108 is electrically connected to the ADAS system of the vehicle body 1. The circuit plug 209 is adapted to the circuit socket 108. The detection device body 201 is electrically connected to the ADAS system of the vehicle body 1 through the flexible circuit 208, the circuit plug 209 and the circuit socket 108.

[0046] The upper and lower inner side walls of the open end of the vehicle body 1 are each provided with three bolt mounting holes 102 , and the top surface of the mounting compartment 101 is provided with a heat dissipation vent 103 , to the inner side of which is fixedly connected a first dustproof net 104 .

[0047] Two T-shaped grooves 105 are provided on the inner bottom surface and the inner top surface of the installation bin 101. A heat dissipation outlet 106 is fixedly provided on the bottom surface of the installation bin 101. A second dustproof net 107 is fixedly connected to the inner side of the heat dissipation outlet 106. The heat dissipation fan 4 is fixedly connected to the heat dissipation outlet 106. The heat dissipation fan 4 is located below the second dustproof net 107.

[0048] Both ends of the contact plate 301 are fixedly connected with T-shaped sliders 302, and three buffer springs 304 are fixedly connected to the side of the contact plate 301 away from the opening of the installation bin 101. Hydraulic damping rods 303 are arranged on the inner sides of the three buffer springs 304, and the three hydraulic damping rods 303 are fixedly connected to the contact plate 301. The hydraulic damping rods 303 and the ends of the buffer springs 304 away from the contact plate 301 are fixedly connected to the inner wall of the installation bin 101.

[0049] The six connecting pieces 204 fixedly connected to the polytetrafluoroethylene protective shell 203 respectively correspond to the six bolt mounting holes 102 opened on the upper and lower inner walls of the mounting bin 101. The six connecting pieces 204 are all threadedly sleeved with fixing bolts 5. The six fixing bolts 5 pass through one end of the connecting piece 204 and are threadedly connected to the six bolt mounting holes 102 respectively.

[0050] The T-shaped sliding blocks 302 fixedly connected at both ends of the two contact plates 301 are slidably connected to the four T-shaped sliding grooves 105 opened on the inner wall of the installation chamber 101 respectively.

[0051] The detection mechanism 2 is installed as a whole on the inner side of the installation compartment 101. The camera 601, laser radar 602 and millimeter wave radar array 603 in the detection device body 201 are facing the rear of the vehicle body 1 to detect the speed, state and distance between the vehicle behind the vehicle body 1 and the vehicle body 1. If the rear vehicle approaches rapidly, the detection device body 201 can send a signal to the ADAS system of the vehicle body 1 through the flexible circuit 208, the circuit plug 209 and the circuit socket 108, so that the ADAS system can respond in time to adjust the vehicle state, thereby preventing rear-end collisions.

[0052] In addition, the rear of the vehicle body 1 is also provided with warning devices such as a flash light and a horn. When the camera 601, the laser radar 602 and the millimeter-wave radar array 603 in the detection device body 201 detect that the speed and status of the rear vehicle and the distance between the rear vehicle and the vehicle body 1 exceed the set threshold, the flash light emits a warning light (red) or the horn emits a warning sound to prevent the rear vehicle from rear-ending.

[0053] The heat generated by the detection device body 201 will be transferred to the metal cooling fins 206 through the metal heat spreader 205. During the driving of the vehicle body 1, the ADAS system controls the detection device body 201 to automatically start, and automatically controls the cooling fan 4 to start through the ECU. The cooling fan 4 draws air from the installation compartment 101 through the cooling air outlet 106, thereby taking away the heat derived from the metal cooling fins 206. The cooling air vents 103 have a ventilation effect, so that the present application has the effect of quickly dissipating the heat of the detection device body 201. When the vehicle body 1 is rear-ended, the detection mechanism 2 will also be impacted. If it directly hits the detection mechanism 2, the detection device body 201 is likely to The rate of direct damage is that if the detection mechanism 2 is not directly hit, when the vehicle body 1 is hit from behind, the detection device body 201 will move toward the inside of the installation bin 101 with the impact force of the collision, and the force unloading push plate 207 will push the contact plate 301 to move toward the direction of the hydraulic damping rod 303. The hydraulic damping rod 303 and the buffer spring 304 can play a buffering effect at this time. At the same time, the rubber protective cover 202 can also play a certain buffering effect, which can greatly protect the safety of the detection device body 201 and prevent the detection device body 201 from being damaged by impact, so that the detection device body 201 of the present application has better anti-impact performance, and thus the detection device body 201 of the present application has better safety.

[0054] Working principle:

[0055] In the first step, in this application, the detection mechanism 2 is installed as a whole on the inner side of the installation compartment 101, and the camera 601, laser radar 602 and millimeter wave radar array 603 in the detection device body 201 are facing the rear of the vehicle body 1 to detect the speed, state and distance between the vehicle behind the vehicle body 1 and the vehicle body 1. If the rear vehicle approaches rapidly, the detection device body 201 can send a signal to the ADAS system of the vehicle body 1 through the flexible circuit 208, the circuit plug 209 and the circuit socket 108, so that the ADAS system can respond in time to adjust the vehicle status (for example; tighten the seat belt, cut off the power and adjust the seat posture, etc.), so as to prevent rear-end collisions.

[0056] In the second step, in this application, the heat generated by the detection device body 201 will be transferred to the metal cooling fins 206 through the metal heat spreader 205. During the driving of the vehicle body 1, the ADAS system controls the detection device body 201 to automatically turn on, and automatically controls the cooling fan 4 to start through the ECU. The cooling fan 4 draws air from the inside of the installation compartment 101 through the cooling air outlet 106, thereby taking away the heat derived from the metal cooling fins 206. The cooling air vents 103 have a ventilation effect, so that this application has the effect of quickly dissipating the heat of the detection device body 201.

[0057] In the third step, when the vehicle body 1 is rear-ended, the detection mechanism 2 will also be impacted. If the detection mechanism 2 is directly impacted, the detection device body 201 is likely to be directly damaged. If the detection mechanism 2 is not directly impacted, when the vehicle body 1 is rear-ended, the detection device body 201 will move toward the inside of the installation bin 101 with the impact force of the impact (the polytetrafluoroethylene protective shell 203 is fixed to the bolt mounting hole 102 opened in the installation bin 101 through the connecting piece 204 and the fixing bolt 5, and the polytetrafluoroethylene protective shell 203 is fixedly connected to the rubber protective cover 202, and the rubber protective cover 202 itself has The rubber protective cover 202 will be pulled and stretched when the detection device body 201 moves with the impact force. At the same time, the polytetrafluoroethylene protective shell 203 is fixed to the installation bin 101, so the position of the polytetrafluoroethylene protective shell 203 remains unchanged). At this time, the force unloading push plate 207 will push the contact plate 301 to move toward the hydraulic damping rod 303. The hydraulic damping rod 303 and the buffer spring 304 can play a buffering role at this time. At the same time, the rubber protective cover 202 can also play a certain buffering role, which can greatly protect the safety of the detection device body 201 and prevent the detection device body 201 from being damaged by impact.

[0058] In the fourth step, during the driving of the vehicle, bumps will occur due to the influence of the road surface. During this process, the rubber protective cover 202 surrounding the detection device body 201 can have a good shock-absorbing effect, which greatly enhances the operating stability of the detection device body 201. At the same time, the rubber protective cover 202 can seal the gap between the detection device body 201 and the installation bin 101 due to its material characteristics, thereby increasing the waterproof performance and preventing rainwater from flowing into the interior of the installation bin 101 through the gap between the detection device body 201 and the installation bin 101, thereby affecting the connection between the circuit plug 209 and the circuit socket 108.

[0059] In the fifth step, when the detection device body 201 of the present application is damaged, Mark removes the six fixing bolts 5 from the bolt mounting holes 102 and the connecting parts 204. At this time, the detection mechanism 2 as a whole can be removed from the installation bin 101 as a whole, and the detection mechanism 2 as a whole can be repaired separately.

[0060] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A truck rear-end collision prevention detection device, comprising a vehicle body (1), characterized in that: The parking space of the vehicle body (1) is fixedly provided with an installation chamber (101), a detection mechanism (2) is fixedly installed inside the installation chamber (101), two buffer mechanisms (3) are fixedly connected to the inner wall of the installation chamber (101), both of the two buffer mechanisms (3) are in contact with the detection mechanism (2), and a heat dissipation mechanism is provided at the bottom of the installation chamber (101); Wherein, the detection mechanism (2) comprises a detection device body (201), a rubber protective sleeve (202) and a polytetrafluoroethylene protective shell (203); The detection device body (201) includes a camera (601), a laser radar (602) and a millimeter wave radar array (603); Wherein, the buffer mechanism (3) comprises a contact plate (301); Wherein, the heat dissipation mechanism comprises a heat dissipation fan (4).

2. A truck rear-end collision prevention detection device as claimed in claim 1, characterized in that: The outer wall of the detection device body (201) is fixedly connected to a rubber protective sleeve (202), the rubber protective sleeve (202) surrounds the four sides of the detection device body (201), the rubber protective sleeve (202) is fixedly connected to a polytetrafluoroethylene protective shell (203), and the upper and lower ends of the polytetrafluoroethylene protective shell (203) away from the rubber protective sleeve (202) are fixedly connected to three connecting pieces (204).

3. A truck rear-end collision prevention detection device as claimed in claim 2, characterized in that: The polytetrafluoroethylene protective shell (203) surrounds one end of the detection device body (201) on which the camera (601), the laser radar (602) and the millimeter wave radar array (603) are installed; one end of the detection device body (201) away from the polytetrafluoroethylene protective shell (203) is fixedly connected to a metal heat spreader (205); a side of the metal heat spreader (205) away from the detection device body (201) is fixedly connected to a metal heat dissipation fin (206); both ends of the side of the metal heat spreader (205) away from the detection device body (201) are fixedly connected to a force unloading push plate (207); and the two force unloading push plates (207) are both L-shaped.

4. A truck rear-end collision prevention detection device as claimed in claim 3, characterized in that: A flexible circuit (208) is fixedly connected to the bottom of the detection device body (201), and a circuit plug (209) is fixedly connected to one end of the flexible circuit (208) away from the detection device body (201).

5. A truck rear-end collision prevention detection device as claimed in claim 4, characterized in that: A circuit socket (108) is fixedly mounted on the inner wall of the installation chamber (101) away from the opening end, and the circuit plug (209) is adapted to the circuit socket (108).

6. A truck rear-end collision prevention detection device as claimed in claim 5, characterized in that: The upper and lower inner side walls of the open end of the vehicle body (1) are each provided with three bolt mounting holes (102); the top surface of the mounting compartment (101) is provided with a heat dissipation vent (103); and the inner side of the heat dissipation vent (103) is fixedly connected with a first dustproof net (104).

7. A truck rear-end collision prevention detection device as claimed in claim 6, characterized in that: The inner bottom surface and the inner top surface of the installation bin (101) are both provided with two T-shaped slide grooves (105); the bottom surface of the installation bin (101) is fixedly provided with a heat dissipation outlet (106); the inner side of the heat dissipation outlet (106) is fixedly connected with a second dustproof net (107); the heat dissipation fan (4) is fixedly connected to the heat dissipation outlet (106); and the heat dissipation fan (4) is located below the second dustproof net (107).

8. A truck rear-end collision prevention detection device as claimed in claim 7, characterized in that: Both ends of the contact plate (301) are fixedly connected with T-shaped sliders (302); the side of the contact plate (301) away from the opening of the installation bin (101) is fixedly connected with three buffer springs (304); the inner sides of the three buffer springs (304) are provided with hydraulic damping rods (303); the three hydraulic damping rods (303) are fixedly connected to the contact plate (301); and the ends of the hydraulic damping rods (303) and the buffer springs (304) away from the contact plate (301) are fixedly connected to the inner wall of the installation bin (101).

9. A truck rear-end collision prevention detection device as claimed in claim 8, characterized in that: The six connecting pieces (204) fixedly connected to the polytetrafluoroethylene protective shell (203) respectively correspond to the six bolt mounting holes (102) opened on the upper and lower inner side walls of the mounting chamber (101); the six connecting pieces (204) are all threadedly sleeved with fixing bolts (5); and one end of the six fixing bolts (5) passes through the connecting pieces (204) and is respectively threadedly connected to the six bolt mounting holes (102).

10. A truck rear-end collision prevention detection device as claimed in claim 9, characterized in that: The T-shaped sliding blocks (302) fixedly connected at both ends of the two contact plates (301) are respectively slidably connected to four T-shaped sliding grooves (105) provided on the inner wall of the installation chamber (101).

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