Vehicle-mounted floating frame and road inspection equipment

Abstract

This application relates to a vehicle-mounted floating frame and road inspection equipment. The vehicle-mounted floating frame, used to tow a target object along a working surface, includes: a fixed bracket for connecting a vehicle; a drive mechanism disposed on the fixed bracket; a connecting bracket for towing the target object, the connecting bracket being movably disposed on the fixed bracket in a vertical direction; and a chain, one end connected to the output end of the drive mechanism and the other end connected to the connecting bracket. The drive mechanism drives the connecting bracket to move via the chain, which has a raised position and a lowered position, allowing the vehicle-mounted floating frame to have a retracted state and an operational state. In the retracted state, the chain is in the raised position to raise the connecting bracket; in the operational state, the chain is in the lowered position to lower the connecting bracket and slack off the chain, thereby allowing the connecting bracket to float vertically relative to the fixed bracket. Using a vehicle-mounted floating frame to carry ground-penetrating radar in road inspection equipment can effectively improve inspection efficiency, inspection results, and service life.

Description

Technical Field

[0001] This application relates to the field of road inspection technology, and more specifically, to a vehicle-mounted floating frame and road inspection equipment. Background Technology

[0002] Cracks and collapses in the deep structural layers of a road can reduce its safety and lifespan. Ground-penetrating radar can be used to detect these types of defects located beneath the road surface.

[0003] Existing ground-penetrating radar (GPR) is typically mounted on mobile robots, which have relatively slow movement speeds and low detection efficiency. To increase movement speed and improve detection efficiency, the idea of ​​using faster vehicles to carry GPR is considered. However, when vehicles quickly traverse uneven road surfaces, the significant bumps cause the GPR to vibrate considerably. This results in the GPR not maintaining close contact with the ground during its upward movement, affecting detection accuracy, and it is also prone to damage upon impact with the ground during its descent. Furthermore, during vehicle relocation, the complex road environment makes the GPR susceptible to collisions and damage from obstacles during long-distance movement close to the ground. Summary of the Invention

[0004] This application aims to provide a vehicle-mounted floating frame and road detection equipment to alleviate the problem of easy collision with the ground due to high movement speed, thereby taking into account the detection efficiency and detection effect of ground penetrating radar and mitigating the problem of ground penetrating radar being damaged by impact.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, embodiments of this application provide a vehicle-mounted floating frame for traction of a target object along a working surface, comprising: a fixed bracket for connecting a vehicle; a drive mechanism disposed on the fixed bracket; a connecting bracket for traction of the target object, the connecting bracket being movably disposed on the fixed bracket in a vertical direction; and a chain, one end connected to the output end of the drive mechanism and the other end connected to the connecting bracket, the drive mechanism driving the connecting bracket to move via the chain, the chain having a lifting position and a lowering position, so that the vehicle-mounted floating frame has a retracted state and an operating state; in the retracted state, the chain is in the lifting position to lift the connecting bracket; in the operating state, the chain is in the lowering position to lower the connecting bracket and slack the chain, thereby enabling the connecting bracket to float vertically relative to the fixed bracket.

[0007] The vehicle-mounted floating frame provided in this application comprises a fixed bracket connected to the vehicle, a drive mechanism mounted on the fixed bracket, and a connecting bracket for towing a target object (such as a ground-penetrating radar). The connecting bracket is designed to be vertically movable and connected to the fixed bracket, and is levitated to the drive mechanism via a chain. By moving the chain upwards to a lifting position and downwards to a lowering position, the connecting bracket is raised or lowered, allowing the vehicle-mounted floating frame to have both a retracted state with the connecting bracket raised and a working state with the connecting bracket lowered. In the retracted state, the connecting bracket and the target object are raised and moved away from the work surface, making it less likely for the target object to collide with obstacles and facilitating transport. In the working state, the connecting bracket is lowered to allow the target object to move on the work surface. Simultaneously, the chain is slack, allowing the connecting bracket to float vertically relative to the fixed bracket. This allows the target object to float relative to the vehicle, keeping it close to the work surface even when the vehicle is bumpy, preventing it from being thrown up or crashing onto the work surface and thus avoiding damage. Therefore, in the technical solution of this application, the vehicle-mounted floating frame can quickly move the target object on the working surface when it is in working state. When the vehicle is bumpy, it can prevent the target object from being thrown up or smashed onto the working surface, avoid the target object from being damaged by impact with the working surface, and keep the target object close to the working surface to perform the work. When it is in the retracted state, the connecting bracket and the target object are far away from the working surface, and the target object is not easy to hit obstacles on the working surface, which facilitates transportation.

[0008] In one embodiment of this application, along the vertical direction, the connecting bracket has a first position, a second position, and a third position relative to the fixed bracket; when the chain is in the lifting position, the connecting bracket is lifted to the first position; when the chain is in the lowering position, the connecting bracket is lowered to the second position; the distance from the lifting position to the lowering position is greater than the distance from the first position to the second position, so that the connecting bracket can float between the first position and the third position.

[0009] In the above technical solution, the distance from the lifting position to the lowering position is the lifting distance of the drive mechanism. When the chain (i.e., the upper end of the chain) is in the lifting position, the connecting bracket is in the first position. Since "the distance from the lifting position to the lowering position is greater than the distance from the first position to the second position", the connecting bracket descends to the second position before the chain reaches the lowering position. When the chain continues to descend to the lowering position, the lower end of the chain is in the second position along with the connecting bracket, while the upper end of the chain continues to descend, causing the chain to gradually loosen, thereby allowing the connecting bracket to float.

[0010] In one embodiment of this application, the distance from the first position to the second position is greater than the distance from the second position to the third position.

[0011] Generally, the amplitude of vertical fluctuations when a vehicle is bumpy is roughly the same. In the above technical solution, the amplitude of vehicle bumps is roughly the same as the distance the connecting bracket moves upward and downward relative to the fixed bracket. By setting the distance from the second position to the first position to be greater than the distance from the second position to the third position, in the working state, the connecting bracket moves downward relative to the fixed bracket to the third position at most and moves upward to below the first position at most. Thus, in the retracted state, the connecting bracket is raised to the first position. At this time, the lifting height of the connecting bracket is greater than the amplitude of vehicle bumps, ensuring that the connecting bracket and the target object will not hit the ground when the vehicle is bumpy.

[0012] In one embodiment of this application, the fixed bracket is provided with a sliding groove that extends along the vertical direction, the connecting bracket is connected to the sliding groove, and the first position, the second position and the third position are located within the length range of the sliding groove.

[0013] In the above technical solution, the fixed bracket is provided with a slide groove extending in the vertical direction, and the connecting bracket is provided in the slide groove so that the connecting bracket can transmit the traction force in the front-back direction between the fixed bracket and the target object, ensuring the synchronization of the vehicle-mounted floating frame with the vehicle; and the first position, the second position and the third position of the connecting bracket are all within the length range of the slide groove, that is, the length of the slide groove is greater than the travel of the connecting bracket, and the slide groove does not affect the retraction and floating of the connecting bracket.

[0014] In one embodiment of this application, the two side walls of the slide are provided with strip-shaped through holes, the strip-shaped through holes extend along the vertical direction, and the two sides of the connecting bracket are provided with pins, the pins passing through the strip-shaped through holes.

[0015] In the above technical solution, by setting strip-shaped through holes on both sides of the chute and setting pins on both sides of the connecting bracket, the pins can not only move up and down along the strip-shaped through holes, but also rotate around their own axis within the strip-shaped through holes. Therefore, the vehicle and the connecting bracket can be located on two planes with a certain included angle. When the vehicle travels from a flat road to a slope, the connecting bracket and the target object it pulls will not interfere with the ground and cause obstruction, so that the target object can go up the slope with the vehicle.

[0016] In one embodiment of this application, the driving mechanism includes a telescopic push rod and a lifting bracket. One end of the lifting bracket and one end of the telescopic push rod are respectively hinged to the fixed bracket, and the other end of the telescopic push rod is hinged to the lifting bracket to drive the lifting bracket to rotate. The chain is connected to the other end of the lifting bracket.

[0017] In the above technical solution, by setting a telescopic push rod and a lifting bracket, the lifting bracket can extend away from the fixed bracket, so that the chain is above the connecting bracket, which facilitates the connection of the chain. In addition, the telescopic push rod can provide good support under the lifting bracket, improving the stability of the lifting bracket and enabling the connecting bracket to be stably retracted in the first position.

[0018] In one embodiment of this application, the fixing bracket includes a first fixing part and a second fixing part. The first fixing part is used to connect the vehicle, and the connecting bracket and the driving mechanism are disposed on the second fixing part. The first fixing part and the second fixing part are detachably connected.

[0019] In the above technical solution, by setting the fixed bracket as a detachable first fixed part and a second fixed part, during the long-distance transfer of the vehicle, the target object and the vehicle-mounted floating frame can be detached from the vehicle and placed inside the vehicle compartment, leaving only the first fixed part of the vehicle-mounted floating frame outside the vehicle. This avoids the target object and the vehicle-mounted floating frame from colliding with obstacles and being damaged during the long-distance transfer, reduces the wear and tear on the drive mechanism, and also facilitates the connection of the target object to different vehicles for use.

[0020] In one embodiment of this application, the vehicle-mounted floating frame further includes a mounting bracket, which is connected to the connecting bracket and used to carry the target object. The mounting bracket is provided with wheels, which are detached from the working surface in the retracted state and move along the working surface in the working state.

[0021] In the above technical solution, by setting up a mounting bracket, the mounting bracket with wheels replaces the target object in contact with the working surface, which makes it easy to move the target object on the working surface and avoids the target object from colliding with the ground.

[0022] In one embodiment of this application, the vehicle-mounted floating frame further includes a snap-fit ​​assembly, which includes a first snap-fit ​​member and a second snap-fit ​​member. The first snap-fit ​​member is connected to the target object, and the second snap-fit ​​member is connected to the mounting bracket. The first snap-fit ​​member and the second snap-fit ​​member engage to connect the mounting bracket and the target object.

[0023] In the above technical solution, by setting a snap-fit ​​assembly, the first snap-fit ​​component is set on the target object and the second snap-fit ​​component is set on the mounting bracket. The target object and the mounting bracket are detachably connected through the first snap-fit ​​component and the second snap-fit ​​component, which facilitates the disassembly and replacement of the target object to adapt to different usage needs.

[0024] Secondly, this application provides a road detection device, comprising: a ground-penetrating radar; a vehicle; and a vehicle-mounted floating frame as described in any one of the first aspects, wherein the vehicle-mounted floating frame carries the ground-penetrating radar and is connected to the vehicle; when the vehicle-mounted floating frame is in a retracted state, the ground-penetrating radar is away from the ground; when the vehicle-mounted floating frame is in an operational state, the ground-penetrating radar is close to the ground and can float up and down relative to the vehicle.

[0025] When a vehicle is traveling at high speed and experiencing bumps, the ground-penetrating radar can float up and down relative to the vehicle, thus avoiding being thrown up or crashing to the ground and remaining close to the ground. This allows the ground-penetrating radar to have a better detection effect and is not easily damaged. When not detecting, the ground-penetrating radar can also be retracted away from the ground or stored inside the vehicle to avoid damage. Therefore, the road detection equipment provided in this application has high overall detection efficiency, good detection effect, and long service life. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a vehicle-mounted floating frame carrying a ground-penetrating radar according to an embodiment of this application;

[0028] Figure 2 A diagram illustrating the operational state of a vehicle-mounted floating frame provided in an embodiment of this application;

[0029] Figure 3 This is a diagram showing the retracted state of a vehicle-mounted floating frame provided in an embodiment of this application;

[0030] Figure 4 A simplified simulation diagram of the working state of the vehicle-mounted floating frame provided in an embodiment of this application;

[0031] Figure 5 A simplified simulation diagram of the retracted state of a vehicle-mounted floating frame provided in an embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of a vehicle-mounted floating frame provided in one embodiment of this application;

[0033] Figure 7 A partial schematic diagram of a vehicle-mounted floating frame provided in an embodiment of this application;

[0034] Figure 8 A schematic diagram of a walking wheel provided in one embodiment of this application;

[0035] Figure 9 This is a diagram showing the positional relationship between a ground-penetrating radar and a walking wheel, provided in an embodiment of this application.

[0036] Figure 10 This is a schematic diagram of a snap-fit ​​assembly provided in an embodiment of this application;

[0037] Figure 11 This is a schematic diagram of a road detection device provided in one embodiment of this application.

[0038] Icons: 100-Vehicle-mounted floating frame, 1-Ground penetrating radar, 2-Fixed bracket, 21-First fixing part, 211-First section, 212-Second section, 22-Second fixing part, 221-Hook part, 23-Slide groove, 231-Strip through hole, 3-Mounting bracket, 31-Main bracket, 311-Positioning rod, 32-Connecting bracket, 321-Pin, 322-Positioning block, 33-Secondary bracket, 34-Shock absorber spring, 4-Walking wheel, 5-Drive mechanism, 51-Drive component, 52-Lifting bracket, 521-First shaft 522-Second shaft, 523-Third shaft, 6-Chain, 7-Snap-fit ​​assembly, 71-First snap-fit ​​part, 711-Base, 712-Lug, 713-Locking hook, 72-Second snap-fit ​​part, 721-Stop block, 722-Fixing block, 723-Wrench, 7231-Protrusion, 724-Snap-fit, 725-Adjusting nut, 1000-Road inspection equipment, 200-Vehicle, A1-First position, A2-Second position, A3-Third position, Hmax-Lifting position, Hmin-Lowering position. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this application, it should be noted that if terms such as "upper," "lower," "left," "right," "front," "back," "horizontal," and "middle" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, the terms "first" and "second" used in the description of this application are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0045] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In road defect detection, in addition to detecting defects in the surface layer, it is also necessary to detect defects in the structural layers beneath the surface. If defects such as cracking or collapse occur in the structural layers below the surface, it will seriously affect the safety and service life of the road. Currently, ground-penetrating radar is generally used to detect these defects located below the road surface. The ground-penetrating radar moves along the road and detects the sections it passes through.

[0047] Existing ground-penetrating radar (GPR) is typically mounted on mobile robots. However, mobile robots move slowly, resulting in low detection efficiency. To improve efficiency, vehicle-mounted GPR has been considered. Vehicles can carry GPR and travel at higher speeds for rapid road detection. However, on uneven road surfaces, vehicles may experience significant bumps, causing the GPR to bounce considerably. When thrown upwards, the GPR may not remain close to the ground, affecting detection accuracy, and it is prone to damage upon impact. Furthermore, during vehicle relocation, complex road environments mean that GPR traveling close to the ground over long distances is susceptible to collisions and damage. Therefore, mounting GPR on vehicles still presents several problems; even with high detection efficiency, it cannot guarantee reliable detection and is prone to impact damage.

[0048] In view of this, in order to balance high detection efficiency and good detection effect, and to alleviate the problem of ground penetrating radar impact damage, this application provides a technical solution: a vehicle-mounted floating frame for connecting a target object (such as a ground penetrating radar) to a vehicle. The vehicle-mounted floating frame includes a fixed bracket, a connecting bracket, a drive mechanism, and a chain. The fixed bracket is used to connect to the vehicle, and the connecting bracket is used to pull the target object. The connecting bracket and the drive mechanism are disposed on the fixed bracket. The connecting bracket can move vertically relative to the fixed bracket. One end of the chain is connected to the output end of the drive mechanism, and the other end is connected to the connecting bracket, so that the drive mechanism drives the connecting bracket to move through the chain. The chain has a raised position and a lowered position, so that the vehicle-mounted floating frame has a retracted state and an operating state: in the retracted state, the chain is in the raised position to raise the connecting bracket; in the operating state, the chain is in the lowered position to lower the connecting bracket and slack the chain, so that the connecting bracket can float vertically relative to the fixed bracket.

[0049] With the above settings, the vehicle-mounted floating frame moves the target object on the working surface when in operation. When the vehicle bumps, its connecting bracket floats relative to the fixed bracket, so that the target object floats relative to the vehicle, preventing the target object from being thrown up with the vehicle's bumps. This keeps the target object close to the working surface during operation, avoiding damage from impact. When the vehicle-mounted floating frame is in the retracted state, it lifts the connecting bracket to move the target object away from the working surface, making it less likely for the target object to collide with obstacles on the working surface and facilitating transportation.

[0050] The target object carried by the vehicle-mounted floating frame provided in this application can be a ground-penetrating radar, or other types of devices, such as a mobile trolley, a ground spraying device, etc. For example, the target object is a mobile trolley, which can float up and down relative to the vehicle, allowing the vehicle to tow the trolley to travel at a relatively high speed and in a relatively stable manner on uneven roads; the target object is a ground spraying device, which can float up and down relative to the vehicle, allowing the vehicle to tow the ground spraying device to travel at a relatively high speed and in a relatively stable manner on uneven roads, thereby ensuring the spraying effect.

[0051] The working surface mentioned in this application can be the ground or other surfaces parallel to the ground. For example, a vehicle travels on the ground, while the towing target travels on a working surface parallel to the ground.

[0052] In this embodiment, for ease of description, the target object is a ground-penetrating radar and the working surface is the ground.

[0053] like Figure 1 As shown, the vehicle-mounted floating frame 100 includes a fixed bracket 2, a connecting bracket 32, a drive mechanism 5, and a chain 6. The fixed bracket 2 is used to connect the vehicle 200, and the connecting bracket 32 ​​is used to tow the ground-penetrating radar 1. The connecting bracket 32 ​​and the drive mechanism 5 are disposed on the fixed bracket 2. The connecting bracket 32 ​​can move relative to the fixed bracket 2 in the vertical direction. One end of the chain 6 is connected to the output end of the drive mechanism 5, and the other end is connected to the connecting bracket 32, so that the drive mechanism 5 drives the connecting bracket 32 ​​to move through the chain 6. The chain 6 has a lifting position hmax that is raised by the drive mechanism 5 and a lowering position hmin that is lowered by the drive mechanism 5, so that the vehicle-mounted floating frame 100 has a retracted state and a working state.

[0054] Combination Figure 1 and Figure 2 As shown, in the working state, chain 6 is in the lowered position hmin, which lowers the connecting bracket 32 ​​and slacks chain 6, allowing the connecting bracket 32 ​​to float up and down relative to the fixed bracket 2, and the ground penetrating radar 1 to float up and down relative to the vehicle 200. When the vehicle 200 passes through uneven road sections and bumps, the ground penetrating radar 1 floats up and down relative to the vehicle 200 and remains close to the ground under the action of gravity, thereby achieving better detection results and preventing the ground penetrating radar 1 from being damaged by impacting the ground with the vehicle 200.

[0055] Combination Figure 1 and Figure 3 As shown, in the retracted state, the chain 6 is in the raised position hmax to lift the connecting bracket 32. The vehicle-mounted floating frame 100 and the ground-penetrating radar 1 are lifted away from the ground. The vehicle-mounted floating frame 100 and the ground-penetrating radar 1 are less likely to collide with obstacles, making it easier to move to another location.

[0056] Combination Figure 4 and Figure 5 As shown, along the vertical direction, the connecting bracket 32 ​​has a first position A1, a second position A2 and a third position A3 relative to the fixed bracket 2, and the chain 6 has a relatively high lifting position hmax and a relatively low lowering position hmin.

[0057] like Figure 4 As shown, when vehicle 200 is traveling smoothly and the onboard floating frame 100 is in operation, connecting bracket 32 ​​is in the second position A2, and chain 6 is in the lowered position hmin, at which time chain 6 is slack. In the retracted state, as... Figure 5 As shown, the upper end of chain 6 is lifted, and chain 6 is in the lifted position hmax. The connecting bracket 32 ​​connected to the lower end of chain 6 is then lifted upward to the first position A1. At this time, chain 6 is taut, and both the connecting bracket 32 ​​and the ground penetrating radar 1 are lifted off the ground, making it less likely to impact the ground.

[0058] Wherein, the distance (hmax-hmin) from the lifting position hmax to the lowering position hmin is greater than the distance S1 from the first position A1 to the second position A2. Before the chain 6 reaches the lowering position hmin, the connecting bracket 32 ​​descends to the second position A2, at which point the target object (ground penetrating radar 1) is placed on the working surface. When the chain 6 continues to descend to the lowering position hmin, the lower end of the chain 6 is in the second position A2 along with the connecting bracket 32, while the upper end of the chain 6 continues to descend, causing the chain 6 to gradually slack, so that the connecting bracket 32 ​​can float between the first position A1 and the third position A3. In this application, the ability of an object (such as the connecting bracket 32) to move to both sides of a certain position is referred to as floating.

[0059] When vehicle 200 is bumpy, the amplitude of its upward and downward oscillations is approximately the same. Therefore, in the working state, when vehicle 200 is bumpy, the distance that connecting bracket 32 ​​moves upward from the second position A2 to the first position A1 is approximately the same as the distance that connecting bracket 32 ​​moves downward from the second position A2 to the third position A3. In this embodiment, the distance S1 from the first position A1 to the second position A2 is set to be greater than the distance S2 from the second position A2 to the third position A3. This ensures that in the working state, the downward position of connecting bracket 32 ​​relative to fixed bracket 2 is at most the third position A3, and the upward position is below the first position A1. Thus, in the retracted state, connecting bracket 32 ​​is raised to the first position A1, at which point the lifting height of connecting bracket 32 ​​is greater than the amplitude of vehicle 200's oscillations, ensuring that connecting bracket 32 ​​and the target object will not hit the ground when vehicle 200 is bumpy.

[0060] Furthermore, the distance S1 from the first position A1 to the second position A2 is set to be greater than the distance S2 from the second position A2 to the third position A3, which is greater than 40mm. Under highway conditions, the amplitude of vehicle 200's bumps is generally 40mm. By setting S1 > S2 > 40mm, on the one hand, it ensures that the connecting bracket 32 ​​has sufficient floating distance (able to float more than 40mm) in the working state, preventing the connecting bracket 32 ​​and the ground penetrating radar 1 from hitting the ground in the working state; on the other hand, it ensures sufficient lifting height, preventing the connecting bracket 32 ​​and the ground penetrating radar 1 from hitting the ground in the retracted state.

[0061] Combination Figure 3 , Figure 6 and Figure 7 As shown, the fixed bracket 2 is a component used to connect the vehicle-mounted floating bracket 100 and the ground-penetrating radar 1 to the vehicle 200. There are various ways to float the fixed bracket 2 and the connecting bracket 32, as long as the fixed bracket 2 can pull the connecting bracket 32 ​​to move back and forth, and the connecting bracket 32 ​​can float up and down relative to the fixed bracket 2. For example, the fixed bracket 2 has a sleeve extending in the vertical direction, and the connecting bracket 32 ​​has a telescopic rod extending in the vertical direction, the telescopic rod being movably inserted into the sleeve.

[0062] In some embodiments, such as Figure 6 and Figure 7 As shown, the fixed bracket 2 is provided with a slide groove 23, which extends in the vertical direction. One end of the connecting bracket 32 ​​is movably connected to the slide groove 23 in the vertical direction. The first position A1, the second position A2, and the third position A3 are located within the length range of the slide groove 23; in other words, the length of the slide groove 23 is configured to be greater than or equal to the distance from the first position A1 to the third position A3.

[0063] On one hand, the connecting bracket 32 ​​moves up and down along the slide 23, allowing the ground-penetrating radar 1 to float relative to the fixed bracket 2. On the other hand, the connecting bracket 32 ​​can transmit traction force in the front-to-back direction, ensuring the synchronization of the ground-penetrating radar 1 and the vehicle 200. When the vehicle 200 is traveling on a flat road, the connecting bracket 32 ​​is located in the middle of the slide 23. When the vehicle 200 bumps, the fixed bracket 2 swings up and down, and the connecting bracket 32 ​​moves up and down within the slide 23. The ground-penetrating radar 1 floats up and down relative to the fixed bracket 2 and the vehicle 200. When the vehicle 200 bumps and is thrown upwards, the ground-penetrating radar 1 remains close to the ground under the action of gravity.

[0064] The slide 23 can be integrally formed into the fixed bracket 2, or it can be independently formed and then fixedly connected to the fixed bracket 2. For example... Figure 7As shown, one end of the chute 23 is connected to the fixed support 2, and the other end of the chute 23 extends downward beyond the fixed support 2 to increase the movable distance of the connecting support 32 in the chute 23, thereby increasing the floating range of the ground penetrating radar 1 relative to the fixed support 2. Further, as... Figure 5 As shown, the distance between the slide 23 and the ground is greater than or equal to the chassis height of the vehicle 200, so as not to affect the passability of the vehicle 200. For example, if the chassis height is about 100mm, the lower end of the slide 23 is higher than 100mm.

[0065] There are various ways to connect the connecting bracket 32 ​​and the slide 23. For example, the slide 23 may contain a slider, and the connecting bracket 32 ​​may be connected to the slider. In some embodiments, such as... Figure 7 As shown, the two side walls of the slide 23 are provided with strip-shaped through holes 231, which extend vertically. Pins 321 are correspondingly provided on both sides of the connecting bracket 32, and the two pins 321 pass through the two strip-shaped through holes 231. The pins 321 can not only move vertically along the strip-shaped through holes 231, but also rotate around their own axis within the strip-shaped through holes 231. This allows the connecting bracket 32 ​​to swing vertically relative to the fixed bracket 2, enabling the vehicle 200 and the ground-penetrating radar 1 to be positioned on two planes with a certain angle. Therefore, when the vehicle 200 travels from a flat road to a slope, the vehicle-mounted floating frame 100 and the ground-penetrating radar 1 will not interfere with the ground and cause obstruction, allowing the ground-penetrating radar 1 to be used for slope detection.

[0066] In some embodiments, the fixed bracket 2 is provided with multiple sliding grooves 23, and the vehicle-mounted floating frame 100 includes multiple connecting brackets 32, which are correspondingly connected to the multiple sliding grooves 23, and the multiple connecting brackets 32 jointly pull the ground penetrating radar 1. Figure 6 , Figure 7 and Figure 8 As shown, the fixed bracket 2 is provided with two sliding grooves 23, which are arranged in the left and right direction. The vehicle-mounted floating frame 100 includes two connecting brackets 32, which are respectively connected to the two sliding grooves 23, and both connecting brackets 32 extend backward to be used for towing the ground penetrating radar 1.

[0067] like Figure 6 and Figure 7 As shown, the fixed bracket 2 includes a first fixed part 21 and a second fixed part 22. The first fixed part 21 is used to connect the vehicle 200, and the second fixed part 22 is detachably connected to the first fixed part 21. The mounting bracket 3 and the drive mechanism 5 are disposed on the second fixed part 22.

[0068] In an embodiment where the fixed bracket 2 includes a detachable first fixing part 21 and a second fixing part 22, a sliding groove 23 is disposed on the second fixing part 22.

[0069] like Figure 7 As shown, the first fixing part 21 includes a first part 211 and a second part 212. The first part 211 is connected in parallel to the bottom of the vehicle, and the second part 212 extends upward and is used to connect to the second fixing part 22.

[0070] The second fixing part 22 has a hook part 221, which is hung on the second part 212 to connect with the second fixing part 22.

[0071] Furthermore, the hook part 221 and the second part 212 are connected by bolts to prevent the first fixing part 21 and the second fixing part 22 from falling off, thereby improving the connection stability.

[0072] In embodiments where the fixed bracket 2 includes a detachably connected first fixing part 21 and a second fixing part 22, the vehicle-mounted floating frame 100 can detach from the vehicle 200, with only the first fixing part 21 remaining outside the vehicle 200. Therefore, during long-distance relocation, the portion of the vehicle-mounted floating frame 100 except for the first fixing part 21 can be removed and placed inside the vehicle, preventing damage from collisions with obstacles during relocation. Furthermore, the vehicle-mounted floating frame 100 can be configured with multiple first fixing parts 21, each connected to a different vehicle 200, allowing the vehicle-mounted floating frame 100 to connect to different vehicles 200. For example, this facilitates replacement with another working vehicle 200 when one vehicle 200 is damaged, or allows replacement with a vehicle suitable for the road conditions to be inspected, enabling inspection of roads with different conditions.

[0073] In some embodiments, the ground-penetrating radar 1 is provided with rollers for moving on the ground.

[0074] In some embodiments, the ground-penetrating radar 1 is mounted on a bracket with rollers, such as... Figures 1-3 As shown, the vehicle-mounted floating frame 100 also includes a mounting bracket 3. The ground-penetrating radar 1 is connected to the mounting bracket 3, and then connected to the connecting bracket 32 ​​via the mounting bracket 3. The mounting bracket 3 is equipped with wheels 4. The wheels 4 are detached from the ground in the retracted state, and move on the ground in the working state. By setting up the mounting bracket 3, the wheels 4 of the mounting bracket 3 prevent the ground-penetrating radar 1 from colliding with the ground.

[0075] Mounting bracket 3 includes a main bracket 31, a secondary bracket 33, and a shock-absorbing spring 34. The secondary bracket 33 is used to mount the traveling wheel 4 and is connected to the main bracket 31. The shock-absorbing spring 34 is placed between the main bracket 31 and the secondary bracket 33 to buffer the impact force transmitted from the traveling wheel 4 to the secondary bracket 33, thereby reducing the impact force transmitted to the ground penetrating radar 1.

[0076] Combination Figure 6 and Figure 7As shown, the main support 31 and the connecting support 32 can be integrally formed, or they can be formed separately and then assembled into one piece. Figure 7 As shown, the connecting bracket 32 ​​is provided with a protruding positioning block 322, and the main bracket 31 is provided with a gap for accommodating the positioning block 322. The main bracket 31 is placed on the connecting bracket 32, so that the positioning block 322 fits into the gap to position the main bracket 31. Then the connecting bracket 32 ​​and the main bracket 31 are connected by screws.

[0077] Combination Figure 6 and Figure 8 As shown, the sub-support 33 is used to install the walking wheel 4. The sub-support 33 is rotatably connected to the main support 31. The rotation axis of the sub-support 33 extends in the horizontal direction. The shock-absorbing spring 34 connects the sub-support 33 and the main support 31.

[0078] When the traveling wheel 4 is subjected to an upward impact force, the sub-support 33 tends to rotate upward and compress the shock-absorbing spring 34. The shock-absorbing spring 34 deforms to buffer and absorb energy, thereby reducing the impact force transmitted to the ground penetrating radar 1 and preventing the ground penetrating radar 1 from being damaged by the impact.

[0079] When a traveling wheel 4 is provided on each of the left and right sides of the main support 31, since one end of the connecting support 32 can move up and down, the ground penetrating radar 1 will rotate around the wheel axle. The ground penetrating radar 1 will tilt forward or backward, and the front or rear edge of the ground penetrating radar 1 may come into contact with the ground, potentially causing damage from impact or friction damage. In some embodiments, the number of traveling wheels 4 is configured to be three. The front side of the main support 31 is connected to the connecting support 32, and a traveling wheel 4 is provided on each of the left, right, and rear sides of the main support 31. The action of the rear traveling wheel 4 can especially prevent the rear edge of the ground penetrating radar 1 from contacting or impacting the ground. In some embodiments, the main support 31 is provided with at least four traveling wheels 4. At least one traveling wheel 4 can be provided on each of the left, right, front, and rear sides of the main support 31, or at least two traveling wheels 4 can be provided on each of the left and right sides of the ground penetrating radar 1, so as to prevent the front and rear edges of the ground penetrating radar 1 from contacting or impacting the ground.

[0080] For example, combined Figure 6 , Figure 8 and Figure 9As shown, the ground-penetrating radar 1 is connected to the middle of the main support 31. Two auxiliary supports 33 are connected to the left and right sides of the main support 31, each with a wheel 4. The left and right sides of the mounting bracket 3 are supported on the ground by two wheels 4. One of the two wheels 4 on the left side is located in front of the ground-penetrating radar 1, and the other is located behind it. Similarly, one of the two wheels 4 on the right side is located in front of the ground-penetrating radar 1, and the other is located behind it. The four wheels 4 roughly surround the ground-penetrating radar 1, raising the mounting bracket 3 and the ground-penetrating radar 1. The supporting forces on both sides are roughly balanced, ensuring smooth movement of the mounting bracket 3 and the ground-penetrating radar 1 and preventing the ground-penetrating radar 1 from tilting forward or backward to the ground. Furthermore, the mounting bracket 3 and the wheels 4 contact obstacles before the ground-penetrating radar 1 to avoid impact. Additionally, when the ground is uneven on either side, the ground-penetrating radar 1 floats relative to the ground, further reducing the risk of damage from impacts with ground protrusions. Meanwhile, the distance between the ground-penetrating radar 1 and the ground is set to 5-10 mm to ensure better detection results.

[0081] In some embodiments, the ground-penetrating radar 1 is detachably connected to the mounting bracket 3. Figure 6 and Figure 10 As shown, the vehicle-mounted floating frame 100 also includes a snap-fit ​​assembly 7, which includes a first snap-fit ​​member 71 and a second snap-fit ​​member 72. The first snap-fit ​​member 71 is connected to the ground-penetrating radar 1, and the second snap-fit ​​member 72 is connected to the mounting bracket 3. The first snap-fit ​​member 71 and the second snap-fit ​​member 72 engage to connect the mounting bracket 3 and the ground-penetrating radar 1.

[0082] The first connector 71 includes a base 711, a lug 712, and a locking hook 713. The base 711 is connected to the upper surface of the ground penetrating radar 1, the lug 712 is formed on the base 711, and the locking hook 713 is disposed on one side of the lug 712.

[0083] The mounting bracket 3 has a positioning rod 311. The second locking member 72 includes a stop block 721 and a fixing block 722. The stop block 721 and the fixing block 722 clamp the positioning rod 311 and are fixedly connected to it. The stop block 721 extends downward beyond the positioning rod 311. The second locking member 72 also includes a wrench 723 and a latch 724. The wrench 723 is rotatably connected to the fixing block 722, and the latch 724 is connected to the wrench 723.

[0084] During installation, place the ground-penetrating radar 1 close to the main bracket 31 of the mounting bracket 3 from bottom to top, so that the upper part of the lug 712 abuts against the positioning rod 311 and one side of the lug 712 abuts against the stop block 721. Engage the locking buckle 724 with the hook body, and turn the wrench 723 upward to lock the locking buckle 724 and the hook body, thus completing the connection between the mounting bracket 3 and the ground-penetrating radar 1.

[0085] By setting the snap-fit ​​assembly 7, the ground-penetrating radar 1 and the mounting bracket 3 can be detachably connected through the first snap-fit ​​connector 71 and the second snap-fit ​​connector 72, which facilitates the maintenance of the ground-penetrating radar 1 or the replacement of ground-penetrating radar 1 with different specifications to meet different detection requirements.

[0086] Optionally, the length of the latch 724 can be adjusted to adjust the installation height of the ground penetrating radar 1. For smooth surfaces, the installation height of the ground penetrating radar 1 can be set relatively low, resulting in a smaller distance between the radar 1 and the surface. For uneven surfaces, the installation height of the ground penetrating radar 1 can be set relatively high, resulting in a larger distance between the radar 1 and the surface. Figure 10 As shown, the wrench 723 has a protrusion 7231 with a through hole, and the latch 724 has a threaded section with external threads. The threaded section of the latch 724 passes through the through hole on the protrusion 7231. The second snap-fit ​​member 72 also includes two adjusting nuts 725. The two adjusting nuts 725 are located on the upper and lower sides of the protrusion 7231 respectively and are threadedly engaged with the latch 724 to fix the latch 724 to the wrench 723. By rotating the two adjusting nuts 725, the latch 724 can be moved up or down, thereby adjusting the installation height of the ground penetrating radar 1.

[0087] Optionally, the snap-fit ​​assembly 7 also includes a gasket disposed between the lug 712 and the positioning rod 311 to keep the lug 712 and the positioning rod 311 abutting. The gasket may be made of an elastic material, which can, on the one hand, buffer the vibration transmitted from the mounting bracket 3 to the ground penetrating radar 1, and on the other hand, adapt to different installation heights of the ground penetrating radar 1, resulting in different gap sizes between the lug 712 and the positioning rod 311, ensuring that the lug 712 and the positioning rod 311 remain abutting and ensuring a stable connection between the ground penetrating radar 1 and the mounting bracket 3.

[0088] In this embodiment, there are several ways to detach the ground-penetrating radar 1 from the ground when detection is not required. One method is to remove the first latching member 71 and the second latching member 72 of the latching assembly 7 when the ground-penetrating radar 1 needs to be replaced, thereby detaching the ground-penetrating radar 1 from the vehicle-mounted floating frame 100. Another method is to remove the second fixing part 22 from the first fixing part 21 when long-distance transportation is required, such as on highways or other roads where towing is not permitted, so that the part of the vehicle-mounted floating frame 100 other than the first fixing part 21 is detached from the vehicle 200, thus meeting road driving requirements and improving driving safety. A third method is to drive the connecting bracket 32 ​​upwards via the drive mechanism 5 when disassembly is inconvenient, or when detection needs to be temporarily stopped, such as when moving between intervals of road sections to be detected, so that the mounting bracket 3 and the ground-penetrating radar 1 are retracted away from the ground and in a retracted state.

[0089] The drive mechanism 5 includes a drive member 51 and a lifting bracket 52. One end of the lifting bracket 52 is hinged to the fixed bracket 2. The drive member 51 is used to drive the lifting bracket 52 to rotate.

[0090] like Figure 7 As shown, the fixed bracket 2 is provided with a mounting base, and the lifting bracket 52 is rotatably connected to the mounting base through the first shaft 521.

[0091] The free end of the lifting bracket 52 extends rearward and is located above the end of the connecting bracket 32 ​​furthest from the fixed bracket 2. The free end of the lifting bracket 52 and the end of the connecting bracket 32 ​​are connected by a chain 6. The free end of the lifting bracket 52 is provided with a second shaft 522, and the upper end of the chain 6 is hung on the second shaft 522. That is to say, the second shaft 522 passes through the hole on the chain 6, which can realize the connection of the chain 6. No other connection structure is required to achieve the connection between the lifting bracket 52 and the chain 6, which is convenient and stable.

[0092] The driving component 51 can be of various types, such as a rotary drive or a telescopic drive. A rotary drive can be a servo motor, hydraulic motor, etc., whose output end is connected to the lifting bracket 52 and used to drive the lifting bracket 52 to rotate, thereby raising and lowering the free end of the lifting bracket 52. A telescopic drive can be a telescopic push rod, which can be electrically driven or hydraulically driven.

[0093] Taking the drive component 51 as a telescopic push rod as an example, one end of the telescopic push rod is hinged to the fixed bracket 2, and the other end of the telescopic push rod is hinged to the lifting bracket 52.

[0094] like Figure 7 As shown, one end of the telescopic push rod is rotatably hinged to the upper ends of the two side walls of the slide groove 23 via a pivot. A rotatable third shaft 523 is provided on the lifting bracket 52, and the other end of the telescopic push rod is connected to the third shaft 523. The telescopic push rod can effectively support the lifting bracket 52, improving its stability.

[0095] Secondly, such as Figure 11 As shown, this application embodiment also provides a road detection device 1000, which includes a ground-penetrating radar 1, a vehicle 200, and a vehicle-mounted floating frame 100 as described in any embodiment of the first aspect. The vehicle-mounted floating frame 100 carries the ground-penetrating radar 1 and is connected to the vehicle 200. When the vehicle-mounted floating frame 100 is in the retracted state, the ground-penetrating radar 1 is away from the ground. When the vehicle-mounted floating frame 100 is in the working state, the ground-penetrating radar 1 is close to the ground and can float up and down relative to the vehicle 200.

[0096] The road detection equipment 1000 provided in this application has a vehicle-mounted floating frame 100 with both a working state and a retracted state. In the working state, when the vehicle 200 travels at a relatively high speed, the vehicle-mounted floating frame 100 pulls the ground-penetrating radar 1, causing the radar 1 to move quickly with the vehicle 200, significantly increasing the detection speed. When the vehicle 200 experiences up-and-down movement, the connecting bracket 32 ​​of the vehicle-mounted floating frame 100 floats up and down relative to the fixed bracket 2 along the slide groove 23, causing the ground-penetrating radar 1 to float up and down relative to the vehicle 200. This prevents the radar 1 from being impacted by the vehicle's movements, while simultaneously keeping it close to the ground under gravity, allowing it to continuously detect and output stable detection results, ensuring good detection performance. When detection is not required, the drive mechanism 5 lifts the connecting bracket 32 ​​and the ground-penetrating radar 1, retracting them away from the ground to avoid damage from collisions with obstacles. The overall equipment boasts high detection efficiency, good detection results, and a long service life. The vehicle-mounted floating frame 100 also has a storage state, in which the second fixing part 22 is detached from the first fixing part 21, and then the part connected to the second fixing part 22 and the ground penetrating radar 1 are put into the vehicle compartment. This prevents the vehicle 200 from being unable to travel on highways or other roads with high requirements due to towing goods, and also prevents the ground penetrating radar 1 from being damaged during long-distance transportation at high speed, thus meeting the needs of long-distance transportation of the ground penetrating radar.

[0097] According to one embodiment of this application, the vehicle-mounted floating frame 100 includes a fixed bracket 2, a connecting bracket 32, a drive mechanism 5, a chain 6, and a mounting bracket 3 with wheels 4. The ground-penetrating radar 1 is mounted on the mounting bracket 3. The fixed bracket 2 is used to connect to the vehicle 200. The connecting bracket 32 ​​is used to tow the ground-penetrating radar 1. The connecting bracket 32 ​​and the drive mechanism 5 are mounted on the fixed bracket 2. The connecting bracket 32 ​​can move relative to the fixed bracket 2 in the vertical direction. One end of the chain 6 is connected to the output end of the drive mechanism 5, and the other end is connected to the connecting bracket 32, so that the drive mechanism 5 drives the connecting bracket 32 ​​to move through the chain 6. The chain 6 has a lifting position hmax that is raised by the drive mechanism 5 and a lowering position hmin that is lowered by the drive mechanism 5, so that the vehicle-mounted floating frame 100 has a retracted state and a working state.

[0098] Combination Figure 4 and Figure 5 As shown, the connecting bracket 32 ​​has a first position A1, a second position A2, and a third position A3 arranged from top to bottom relative to the fixed bracket 2. The distance from the first position A1 to the second position A2 is S1, and the distance from the second position A2 to the third position A3 is S2. Wherein, (hmax-hmin) > S1 > S2.

[0099] Wherein, the chain length is L, the total height of the ground penetrating radar 1 and the mounting bracket 3 is D, the chassis height of vehicle 200 is H, and the third position A3 is higher than the chassis height of vehicle 200, let H=100mm.

[0100] Furthermore, (hmax-LD) > 100mm. Thus, in the retracted state, the connecting bracket 32 ​​is raised to the first position A1, and the ground-penetrating radar 1 is more than 100mm above the ground, that is, the ground-penetrating radar 1 is more than the chassis height H. On the one hand, this avoids reducing the impact of the ground-penetrating radar 1 on the passability of the vehicle 200, and on the other hand, it avoids the ground-penetrating radar 1 from hitting ground obstacles.

[0101] Furthermore, D > (L - (hmin - D)) / 2 > 40mm, and hmin - D > 40mm. For roads suitable for vehicle traffic, the maximum bump amplitude of a vehicle is generally around 40mm. With the above settings, in the working state, the connecting bracket 32 ​​can float up and down by 40mm, which can effectively prevent the ground-penetrating radar 1 from being thrown up or hitting the ground with the vehicle 200. At the same time, when the chain 6 is slack, it will not have too much slack and will not extend downwards beyond the mounting bracket 3, causing it to drag on the ground, thus preventing the chain 6 from being worn or dragged.

[0102] For example, in the embodiments of this application, L=300mm, D=160mm, S1=180mm, S2=50mm, hmax=630mm, hmin=210mm, satisfying: (hmax-hmin)>S1>S2, (hmax-LD)>100mm, D>(L-(hmin-D)) / 2>40mm, and hmin-D>40mm.

[0103] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle-mounted floating frame for towing a target object along a working surface, characterized in that, include: Fixed bracket, used to connect to the vehicle; The drive mechanism is mounted on the fixed bracket; A connecting bracket for pulling the target object, the connecting bracket being movably mounted on the fixed bracket in the vertical direction; A chain, one end of which is connected to the output end of the drive mechanism and the other end of which is connected to the connecting bracket, the drive mechanism drives the connecting bracket to move through the chain, the chain has a lifting position and a lowering position, so that the vehicle-mounted floating frame has a retracted state and a working state; In the retracted state, the chain is in the raised position to lift the connecting bracket; In the working state, the chain is in the lowered position to lower the connecting bracket and loosen the chain, thereby allowing the connecting bracket to float up and down relative to the fixed bracket; Along the vertical direction, the connecting bracket has a first position, a second position, and a third position relative to the fixed bracket; When the chain is in the lifting position, the connecting bracket is lifted to the first position; When the chain is in the lowered position, the connecting bracket descends to the second position; the distance from the lifting position to the lowered position is greater than the distance from the first position to the second position, so that the connecting bracket can float between the first position and the third position.

2. The vehicle-mounted floating frame according to claim 1, characterized in that, The distance from the first position to the second position is greater than the distance from the second position to the third position.

3. The vehicle-mounted floating frame according to claim 1, characterized in that, The fixed bracket is provided with a sliding groove that extends along the vertical direction. The connecting bracket is connected to the sliding groove, and the first position, the second position, and the third position are located within the length range of the sliding groove.

4. The vehicle-mounted floating frame according to claim 3, characterized in that, The two side walls of the chute are provided with strip-shaped through holes, which extend along the vertical direction. The two sides of the connecting bracket are provided with pins, which pass through the strip-shaped through holes.

5. The vehicle-mounted floating frame according to claim 1, characterized in that, The driving mechanism includes a telescopic push rod and a lifting bracket. One end of the lifting bracket and one end of the telescopic push rod are respectively hinged to the fixed bracket, and the other end of the telescopic push rod is hinged to the lifting bracket to drive the lifting bracket to rotate. The chain is connected to the other end of the lifting bracket.

6. The vehicle-mounted floating frame according to claim 1, characterized in that, The fixed bracket includes a first fixed part and a second fixed part. The first fixed part is used to connect the vehicle, and the connecting bracket and the driving mechanism are disposed on the second fixed part. The first fixed part and the second fixed part are detachably connected.

7. The vehicle-mounted floating frame according to claim 1, characterized in that, The vehicle-mounted floating frame also includes: The mounting bracket is connected to the connecting bracket and used to carry the target object. The mounting bracket is equipped with wheels. The wheels are detached from the working surface in the retracted state and move along the working surface in the working state.

8. The vehicle-mounted floating frame according to claim 7, characterized in that, The vehicle-mounted floating frame also includes: The snap-fit ​​assembly includes a first snap-fit ​​member and a second snap-fit ​​member. The first snap-fit ​​member is connected to the target object, and the second snap-fit ​​member is connected to the mounting bracket. The first snap-fit ​​member and the second snap-fit ​​member engage to connect the mounting bracket and the target object.

9. A road inspection device, characterized in that, include: Ground penetrating radar; vehicle; The vehicle-mounted floating frame according to any one of claims 1-8, wherein the vehicle-mounted floating frame carries the ground-penetrating radar and is connected to the vehicle; when the vehicle-mounted floating frame is in the retracted state, the ground-penetrating radar is away from the ground; when the vehicle-mounted floating frame is in the working state, the ground-penetrating radar is close to the ground and can float up and down relative to the vehicle.

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