Intelligent track expressway pavement detection mechanism and detection vehicle comprising same

Abstract

The utility model discloses a kind of intelligent track expressway pavement detection mechanism and the detection vehicle containing the detection mechanism, the detection mechanism includes the rut detection crossbeam of being hung assembly on detection car by adjusting bolt, the rut detection crossbeam is box-shaped, inside has wiring space, multiple laser ranging sensors are installed with interval in the lower end surface of rut detection crossbeam;The wire harness of each laser ranging sensor is set into wiring space after being passed through the lower end surface of crossbeam, and only the lead tube of its side end is led out to detection crossbeam outside, and is electrically connected with the power supply equipment of outside. Detection vehicle can be conventional van, can also be hand-push type detection car, when adopting van, by a fixed support is fixed on van, and mounting lug is set outside fixed support, after adjusting bolt upper end is penetrated mounting lug, by fastening nut is fixed on mounting lug.

Description

Technical Field

[0001] This utility model relates to the field of road surface inspection, specifically to an intelligent rail express road surface inspection mechanism and an inspection vehicle containing the inspection mechanism. Background Technology

[0002] Intelligent rail transit trains, due to their long-term fixed routes, often develop deep ruts on the road surface, especially in slow-moving stations and on inclines and declines. Therefore, it is essential to conduct road surface inspections along the train routes. Currently, the most advanced road surface defect detection technology is 3D laser scanning. This technology is fast and highly accurate, with thousands of detection points distributed across each cross-section. It can be used not only for rut detection but also for detecting other common road surface defects, and it can capture the microscopic characteristics of the defects. However, due to the relatively high cost of the equipment, the large storage space required, and the cumbersome data processing, it has not yet been widely used in China.

[0003] Based on this, point laser technology is widely used for road surface detection in China. Specifically, existing point laser road surface detection systems include a rut detection beam mounted on a detection vehicle or trailer. Multiple laser ranging sensors are evenly spaced on the beam, and these sensors are used for rut detection in the transverse direction of the lane. During detection, the vehicle moves at a constant speed, causing the rut detection beam to move along the length of the ruts, thus detecting ruts on that section of road. However, in existing rut detection beams, the connecting wires of the laser ranging sensors are exposed, making them susceptible to external signal interference or damage during use. Furthermore, existing rut detection beams cannot be adjusted in real-time according to requirements for installation height and levelness. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, the purpose of this utility model is to provide an intelligent rail transit road surface inspection mechanism and an inspection vehicle containing the mechanism, thereby solving the problems in existing point laser road surface inspection systems where the wiring of each laser ranging sensor is exposed, making it susceptible to damage and interference from external signals, and where the installation height and level of the rut detection beam cannot be adjusted in real time during installation.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A smart rail transit road surface inspection mechanism includes a rut detection beam suspended on an inspection vehicle. Multiple laser ranging sensors are spaced apart on the lower end face of the rut detection beam. The rut detection beam is box-shaped, with internal wiring space for housing sensor wiring harnesses. Multiple through holes for the laser ranging sensor wiring harnesses are provided on the bottom surface of the rut detection beam. At least one conduit for leading out the sensor wiring harness is located on one side of the rut detection beam. At least two adjusting seats are spaced apart on the back of the rut detection beam. Each adjusting seat has an adjusting bolt that penetrates the adjusting seat vertically. Two adjusting nuts are located on the upper and lower sides of the adjusting seat, respectively, on the adjusting bolt. By making the rut detection beam box-shaped, its interior is hollow, allowing for the installation of various sensor wiring harnesses and preventing the sensor wiring harnesses from being exposed. Specifically, during installation, the wiring harnesses from each laser rangefinder sensor pass through the wiring holes and extend into the wiring space (this design reduces the weight of the crossbeam itself, lightens the load on the detection vehicle, and facilitates the installation, disassembly, and transportation of the equipment). Finally, the harnesses extend out of the rut detection crossbeam via wire clips or conduits and connect to the external power supply equipment. Since the wiring holes are located on the bottom surface, they are shielded by the laser rangefinder sensors, and the harnesses are encased in conduits after exiting the beam. This not only facilitates wiring but also protects the harnesses from external signal interference and prevents them from being directly exposed to the outside space. The adjusting seat, adjusting bolt, and adjusting nut on the back of the vehicle-mounted detection crossbeam form an adjusting assembly. During use, the two adjusting nuts can fix the adjusting bolt. When loosened, the adjusting bolt can be moved up and down, changing the relative position of the adjusting bolt and the rut detection crossbeam. This allows the installation height of the rut detection crossbeam to be adjusted according to actual needs after the adjusting bolt is fixedly connected to the vehicle. In addition, at least two adjusting bolts are provided, so that in application, the levelness of the rut detection beam can be adjusted by adjusting the position of the adjusting nuts on the two adjusting bolts, so as to make the detection results more accurate.

[0007] Furthermore, the rut detection beam consists of a detection box with an opening at the top and a sealing cover for sealing the opening of the detection box. This allows for easy wiring during installation; the sealing cover can be opened first to bundle or organize the various wire harnesses inside the detection box, and the sealing cover can be closed again after installation to seal the wiring space. This design facilitates wiring and wire harness management.

[0008] Furthermore, the lower end face of the rut detection beam is provided with multiple sets of sensor mounting holes for installing laser rangefinder sensors. Each set of sensor mounting holes contains multiple evenly distributed mounting holes. Thus, when installing the laser rangefinder sensor, it is fixed in place by screws that mate with the mounting holes.

[0009] Furthermore, the rut detection beam is made of aluminum alloy or high-strength alloy steel. Using aluminum alloy provides high specific strength and specific stiffness, and its good corrosion resistance allows it to adapt to complex outdoor environments, making it suitable for weight-sensitive vehicle-mounted detection equipment. Using high-strength alloy steel provides good strength and toughness, with a yield strength of up to 785 MPa, making it suitable for demanding load-bearing capacity and harsh environments, but it is heavier than aluminum alloy.

[0010] A testing vehicle incorporating an intelligent rail transit road surface inspection mechanism includes the intelligent rail transit road surface inspection mechanism as described above and a carriage. A fixed bracket is fixedly installed on the carriage, with one end of the fixed bracket extending beyond the rear end of the carriage. Two mounting lugs, each corresponding to an adjustment seat, are provided at the extended end. An adjustment bolt passes through the mounting lug and is fixed to the fixed bracket by a fastening nut. An equipment box with a top cover is also installed on the fixed bracket. A DC battery and / or a regulated power supply, as well as a data acquisition device, are fixedly installed inside the equipment box. The end of a conduit is connected to one side of the equipment box, and the wiring harnesses of each laser ranging sensor are introduced into the equipment box, electrically connected to the output terminal of the DC battery or regulated power supply inside the equipment box, and connected to the data input terminal of the data acquisition device. Thus, before inspection, the fixed bracket is fixed to the carriage of the testing vehicle according to design requirements, with one end extending beyond the rear of the carriage, thereby suspending its mounting lugs outside the vehicle. At this point, the adjusting bolts on the rut detection beam are threaded onto the corresponding mounting lugs, and the upper ends of the adjusting bolts are fixed to the mounting lugs with fastening nuts, thus suspending and fixing the rut detection beam outside the vehicle. This installation method effectively ensures real-time adjustment of the installation height of the two adjusting bolts during installation, ensuring that the rut detection beam is horizontal after installation, resulting in accurate data acquisition results. Specifically, during installation, the installation height and levelness of the rut detection beam can be adjusted by adjusting the fixing points at both ends of the adjusting screw. During the detection process, when the vehicle is traveling at a constant speed, each laser ranging sensor can transmit real-time detection data to the backend. The equipment box fixed on the bracket can be used to assemble batteries and power supplies to power the sensors. The wiring harnesses (data output lines and conductive wires) of each laser ranging sensor pass through the inside of the rut detection beam and then enter the equipment box through conduits, effectively ensuring that the wiring harnesses of each sensor are in a sealed protective environment, preventing exposure and damage. Meanwhile, the installed equipment enclosure provides a sealed installation environment for power supply equipment and data acquisition devices, ensuring electrical safety.

[0011] Furthermore, a wiring hole is provided on the equipment box, and the end of the conduit is sealed and connected to the wiring hole to connect the data transmission lines and conductive wire bundles of each laser ranging sensor into the equipment box. In this way, by providing a wiring hole and sealing the end of the conduit at the wiring hole, the airtightness between the conduit and the equipment box can be ensured, preventing external impurities or rainwater from entering the box.

[0012] Furthermore, the fixing bracket is rectangular, composed of four connected rectangular tubes, and has multiple positioning seats spaced apart on it. The fixing bracket is secured to the vehicle body via bolts passing through the positioning seats and threaded connections, or by clamping it with clamps. This allows the fixing bracket to adapt to the installation in most vehicle bodies. If holes cannot be drilled in the vehicle body during installation, the fixing bracket is secured using clamps. If pre-drilled holes can be made in the vehicle body, it can be secured by bolts passing through the positioning seats. The fixing bracket offers various methods to meet the requirements of different vehicles.

[0013] Furthermore, an insulating partition is provided inside the equipment box to separate the DC battery and the regulated power supply. A heat dissipation vent is located on the side of the equipment box, and a cooling fan is installed inside, electrically connected to the DC battery and / or the regulated power supply. This insulating partition separates the battery and power supply, preventing signal interference between them. The heat dissipation vent and cooling fan dissipate heat from the equipment box, preventing malfunctions caused by prolonged exposure to high temperatures. The DC battery inside the equipment box is secured with elastic straps or slots to prevent it from shifting during vehicle operation; the power supply compartment is equipped with a regulated power supply mounting bracket, which features a shock-absorbing design to reduce the impact of vibration on the power supply.

[0014] A testing vehicle incorporating an intelligent rail transit road surface detection mechanism includes the intelligent rail transit road surface detection mechanism as described above and a hand-push testing vehicle. The hand-push testing vehicle includes a base plate and a front frame and a rear frame fixedly mounted on the base plate. The rut detection beam is located on one side of the front frame. An adjustable mounting seat, with its end clamped and fixed to the front frame, is fixedly installed on the adjusting seat of the rut detection beam between two adjusting nuts. An equipment box with a top cover is fixedly installed on the base plate, and a DC battery and / or a regulated power supply are fixedly installed inside the equipment box. The end of a conduit is connected to one side of the equipment box, and the wiring harnesses of each laser ranging sensor are introduced into the equipment box and electrically connected to the output terminal of the DC battery or regulated power supply inside the equipment box. Thus, the testing vehicle is a hand-push testing vehicle, which is more flexible than ordinary vehicles and easier to control when encountering curves or narrow road sections. The base plate on the inspection vehicle can accommodate the equipment box. The rut detection beam is located on one side of the front frame and is fixed to the front frame via adjustable mounting brackets. During installation, the clamping height of the adjustable mounting brackets is adjusted according to the required ground clearance of the rut detection beam to meet the inspection requirements of the vehicle-mounted inspection beam. When clamping and fixing, attention must be paid to the clamping height on the front frame; the clamping height of both adjustable mounting brackets must be consistent to ensure that the rut detection beam is horizontal after installation, resulting in more accurate detection data. The equipment box fixed on the base plate can be used to house batteries and power supplies to power the sensors. The wiring harnesses (data output lines and conductive wires) of each laser rangefinder sensor pass through the inside of the rut detection beam and then enter the equipment box through conduits. This effectively ensures that the wiring harnesses of each sensor are within a sealed, protected environment, preventing exposure and damage.

[0015] Furthermore, a storage plate is fixedly installed between the front and rear frames, and a U-shaped push rod is connected to the rear frame. This storage plate allows inspection personnel to place personal belongings or display devices to wirelessly receive data from various sensors and display it on the display device. The U-shaped push rod facilitates the inspection personnel in moving the inspection vehicle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the rut detection beam in the embodiment;

[0017] Figure 2 This is a top view of the rut detection beam in the embodiment;

[0018] Figure 3 This is a schematic diagram of the installation structure of the road surface detection mechanism mounted on the inspection vehicle's cargo compartment in the embodiment;

[0019] Figure 4 This is an enlarged structural diagram of the fixed frame in Example 2;

[0020] Figure 5 This is a schematic diagram of the road surface inspection mechanism installed on a hand-push inspection vehicle in Example 3. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] It should be noted that similar reference numerals 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. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the referred mechanism or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In intelligent rail transit, the trains travel on fixed paths. Therefore, after long-term operation, deep ruts develop on the road surface, affecting train safety. Based on this, it is necessary to periodically inspect the road surface for rutting conditions to facilitate future maintenance. Specifically, the United States was among the first to apply point laser technology to road inspection. However, early point laser equipment design followed the principles of ultrasonic equipment. Ultrasonic sensors, when spaced 300-500mm apart, would interfere with each other, affecting sampling accuracy, and the sensors had to be vertically arranged. Therefore, designs using 3 or 5 sensors were common. Studies have shown that due to the limited number of laser points, depth results are significantly inaccurate when using 3 or 5-point sensors. Simpson believes that more than 9 sensors can generate a nearly continuous road cross-section, and the detection accuracy meets modern maintenance requirements. Therefore, recently developed point laser equipment generally uses more than 9 sensors. The China Highway Research Institute (2006) developed a rapid road condition detection system (CiCS) with 13 sensors: 9 vertical and 4 oblique laser sensors arranged on a 2.3m crossbeam. Therefore, the 13-point laser equipment commonly used in China is currently a relatively mature and widely adopted automated rut detection technology. It can generate near-continuous road cross-sections, has high detection accuracy, and can meet maintenance requirements. However, when installing laser rangefinders on existing rut detection beams, the connecting wires of each laser rangefinder are exposed, making them susceptible to external signal interference or damage during use. Furthermore, existing rut detection beams cannot be adjusted in real time according to needs for height and levelness. Therefore, further improvements to the existing detection system are necessary.

[0024] Example 1

[0025] like Figures 1-3As shown, this embodiment provides an intelligent rail transit road surface detection mechanism, including a rut detection beam 1 suspended and mounted on a detection vehicle. Multiple laser ranging sensors 2 are installed at intervals on the lower end face of the rut detection beam 1. The rut detection beam 1 is box-shaped, with internal wiring space for placing sensor wiring harnesses. Multiple through holes 14 are provided on the bottom surface of the rut detection beam for the wiring harnesses of the laser ranging sensors 2 to pass through. At least one conduit 16 for leading out the sensor wiring harness is provided on one side of the rut detection beam 1. At least two adjusting seats 15 are also installed at intervals on the back of the rut detection beam 1. Each adjusting seat 15 has an adjusting bolt 3 penetrating through it. The adjusting bolt 3 is vertically arranged, and two adjusting nuts 4 are respectively located on the upper and lower sides of the adjusting seat 15. Thus, by making the rut detection beam 1 a box-shaped body, its interior is hollow, allowing for the installation of various sensor wiring harnesses and preventing the sensor wiring harnesses from being exposed. Specifically, during installation, the wiring harnesses on each laser rangefinder sensor 2 pass through the wiring hole 14 and extend into the wiring space (this arrangement reduces the weight of the crossbeam itself, lightens the load on the detection vehicle, and facilitates the installation, disassembly, and transportation of the equipment). Finally, they extend out of the track detection crossbeam 1 via the wire clip or conduit 16 and connect to the external power supply equipment. Since the wiring hole 14 is located on the bottom surface, it is shielded by the laser rangefinder sensor 2, and after passing through, it is encased in the conduit 16. This not only facilitates wiring but also protects the wiring harnesses from external signal interference and prevents them from being directly exposed to the external space. The adjusting seat 15, adjusting bolt 3, and adjusting nut 4 located on the back of the vehicle-mounted detection beam form an adjusting assembly. During use, the two adjusting nuts 4 can fix the adjusting bolt 3. Simultaneously, after loosening, the adjusting bolt 3 can be moved up and down, changing the relative position of the adjusting bolt 3 and the rut detection beam 1. This allows the installation height of the rut detection beam 1 to be adjusted according to actual needs after the adjusting bolt 3 is fixedly connected to the vehicle. Furthermore, at least two adjusting bolts 3 are provided. Therefore, by adjusting the position of the adjusting nuts 4 on the two adjusting bolts 3, the levelness of the rut detection beam 1 can be adjusted, resulting in more accurate detection results.

[0026] Specifically, in this embodiment, the width of the rut detection beam 1 is 2300mm, and the installation height is 300±20mm from the ground. Nine vertical laser rangefinders 2 are non-uniformly distributed along the beam direction, and two high-power, long-range oblique laser rangefinders 2 are respectively placed at the left and right ends. These sensors emit laser light onto the road surface at different deflection angles, expanding the cross-sectional detection width to 3600mm without affecting traffic. The lateral spacing between the vertical laser rangefinders 2 is fixed, with denser spacing (225mm-250mm) at wheel track areas and sparser spacing (400mm) at non-wheel track areas. The lateral spacing of the oblique laser rangefinders 2 is calculated using laser reflection time. Due to road surface unevenness, there is a fluctuation of ±5mm, which can be ignored in actual calculations and replaced by a fixed spacing.

[0027] Furthermore, the rut detection beam 1 consists of a detection box 11 with an opening at the top and a sealing cover 12 for sealing the opening of the detection box 11. Specifically, one side of the sealing cover 12 is rotatably mounted on the detection box 11, and the other side is fixed to the detection box 11 by a snap-fit. In practice, the sealing cover 12 can be bent downwards on all four sides and then fitted onto the detection box 11, sealing it against the upper edge of the detection box 11. This allows for easy wiring; the sealing cover 12 can be opened first to bundle or organize the wire harnesses inside the detection box 11, and the sealing cover 12 can be closed after installation to seal the wiring space. This design facilitates wiring and wire harness management.

[0028] Furthermore, the lower end face of the rut detection beam 1 is provided with multiple sets of sensor mounting holes 13 for mounting the laser rangefinder sensor 2, and each set of sensor mounting holes 13 contains multiple evenly distributed mounting holes. In this way, when installing the laser rangefinder sensor 2, it is installed and fixed by screws passing through and engaging with the mounting holes.

[0029] Furthermore, the rut detection beam 1 is made of aluminum alloy or high-strength alloy steel. When aluminum alloy is used, it has high specific strength and specific stiffness, and its good corrosion resistance allows it to adapt to complex outdoor environments, making it suitable for weight-sensitive vehicle-mounted detection equipment. When high-strength alloy steel is selected as the material, it has good strength and toughness, with a yield strength of up to 785 MPa, making it suitable for working conditions with high load-bearing capacity requirements and harsh environments, but it is heavier than aluminum alloy.

[0030] Example 2

[0031] like Figure 3 , Figure 4As shown, this embodiment provides a testing vehicle with an intelligent rail transit road surface testing mechanism, including the intelligent rail transit road surface testing mechanism as described above and a carriage 6. A fixed bracket 7 is fixedly installed on the carriage 6. One end of the fixed bracket 7 extends out of the rear end of the carriage 6, and two mounting lugs 71 corresponding to the adjusting seats 15 are provided at the extended end. The upper end of the adjusting bolt 3 passes through the mounting lugs 71 and is fixed to the fixed bracket 7 by fastening nuts (specifically, each adjusting bolt 3 has two fastening nuts at its upper end, respectively placed on the upper and lower sides of the mounting lugs 71). An equipment box 8 with a top cover is also provided on the fixed bracket 7. A DC battery and / or a regulated power supply, as well as a data acquisition device, are fixedly installed in the equipment box 8. The end of the conduit 16 is connected to one side of the equipment box 8, and the wiring harness of each laser ranging sensor 2 is introduced into the equipment box 8 and electrically connected to the output end of the DC battery or regulated power supply in the equipment box 8, and connected to the data input end of the data acquisition device. Before testing, the fixed bracket 7 is first fixed to the carriage 6 of the testing vehicle according to design requirements, with one end extending beyond the rear of the carriage 6, thus suspending the mounting lug 71 outside the vehicle. Then, the adjusting bolt 3 on the rut detection beam 1 is threaded through the corresponding mounting lug 71, and the upper end of the adjusting bolt 3 is fixed to the mounting lug 71 with a fastening nut, thereby suspending and fixing the rut detection beam 1 outside the vehicle. This installation method effectively ensures real-time adjustment of the installation height of the two adjusting bolts 3 during installation, ensuring that the rut detection beam 1 is horizontal after installation, resulting in accurate data acquisition. Specifically, during installation, the installation height and horizontality of the rut detection beam 1 can be adjusted by adjusting the fixing points at both ends of the adjusting bolt. During testing, when the vehicle is traveling at a constant speed, each laser ranging sensor 2 can transmit real-time detection data to the backend. The equipment box 8 fixed on the fixed bracket 7 can be used to assemble batteries and power supplies to power the sensors. The wiring harnesses (data output lines and conductive wires) of each laser rangefinder sensor 2 pass through the inside of the rut detection beam 1 and then through the conduit 16 into the equipment box 8. This effectively ensures that the wiring harnesses of each sensor are in a sealed protective environment, preventing exposure and damage. Simultaneously, the equipment box 8 provides a sealed installation environment for the power supply equipment and data acquisition devices, ensuring electrical safety.

[0032] During the inspection process, to reduce the impact of vehicle vibration 6 during vehicle movement, the lower end face of the fixed bracket 7 is equipped with shock-absorbing rubber blocks, each 8mm thick, to further isolate the impact of vehicle vibration on the rut detection beam 1. The equipment box 8 is made of ABS engineering plastic or aluminum alloy, possessing good strength, corrosion resistance, and insulation properties. The inspection vehicle used can be a truck, pickup truck, or tricycle. In this embodiment, the equipment box 8 is rectangular, with one end of its top cover rotatably connected to the equipment box 8, and the other side fixedly connected by a buckle.

[0033] Furthermore, a wiring hole 14 is provided on the equipment box 8, and the end of the conduit 16 is sealed and connected to the wiring hole 14 to connect the data transmission lines and conductive wire bundles of each laser rangefinder sensor 2 into the equipment box 8. In this way, by setting the wiring hole 14 and sealing the end of the conduit 16 to the wiring hole 14, the airtightness between the conduit 16 and the equipment box 8 can be ensured, preventing external impurities or rainwater from entering the box.

[0034] Furthermore, the fixing bracket 7 is rectangular and consists of four rectangular tubes connected together. Multiple positioning seats 72 are spaced apart on the fixing bracket 7. The fixing bracket 7 is fixed to the carriage 6 by bolts passing through the positioning seats 72 and threaded connection, or by clamping it onto the carriage 6 using clamps (the clamps are made of stainless steel with an anti-slip surface, and the clamping force of a single clamp is not less than 500N). In this way, the fixing bracket 7 can adapt to the fixing installation of most carriages 6. During installation, if the carriage 6 cannot be drilled, the fixing bracket 7 is fixed by clamping. If pre-drilled holes can be made on the carriage 6, it can be fixed by bolts passing through the positioning seats 72. The fixing method of the fixing bracket 7 is diverse and can meet the requirements of different vehicles.

[0035] Furthermore, an insulating partition is provided inside the equipment box 8 to separate the DC battery and the regulated power supply. A heat dissipation vent is located on the side of the equipment box 8, and a cooling fan is installed inside the equipment box 8, which is electrically connected to the DC battery and / or the regulated power supply. In this way, the insulating partition can separate the battery and power supply, preventing signal interference between them. The heat dissipation vent and cooling fan can dissipate heat from the equipment box 8, preventing malfunctions caused by prolonged exposure to high temperatures. The DC battery inside the equipment box 8 is secured with elastic straps or slots to prevent it from shaking during vehicle operation; the power supply compartment is equipped with a regulated power supply mounting bracket, which features a shock-absorbing design to reduce the impact of vibration on the power supply.

[0036] Example 3

[0037] like Figure 5As shown, this embodiment provides a testing vehicle with an intelligent rail transit road surface testing mechanism, including the intelligent rail transit road surface testing mechanism as described above and a hand-push testing vehicle 9; the hand-push testing vehicle 9 includes a base plate 91 and a front frame 93 and a rear frame 94 fixedly mounted on the base plate 91, and four rectangularly distributed wheels 92 are provided under the base plate 91; the rut detection beam 1 is located on one side of the front frame 93, and an adjustable mounting seat 10 with its end clamped and fixed to the front frame 93 is fixedly installed on the adjusting seat 15 of the rut detection beam 1 between two adjusting nuts 4; an equipment box 8 with a top cover is fixedly installed on the base plate 91, and a DC battery and / or a regulated power supply are fixedly installed inside the equipment box 8; the end of the conduit 16 is connected to one side of the equipment box 8, and the wiring harness of each laser ranging sensor 2 is introduced into the equipment box 8 and electrically connected to the output end of the DC battery or regulated power supply inside the equipment box 8. Thus, the testing vehicle is a hand-push testing cart 9, which is more flexible than ordinary vehicles and easier to control when encountering turning sections or narrow sections of road (the wheels 92 can move freely in narrow and complex testing areas, with a steering angle of ≥360°, and have a braking function to ensure equipment stability during testing). The base plate 91 on the testing cart can install the equipment box 8. The rut detection beam 1 is located on one side of the front frame 93 and is clamped and fixed to the front frame 93 by an adjustable mounting seat 10. During installation, the clamping height of the adjustable mounting seat 10 is adjusted according to the required ground distance of the rut detection beam 1 to meet the testing requirements of the vehicle-mounted testing beam (during assembly, high-precision measuring instruments (such as vernier calipers and levels) are used for size and position calibration). When clamping and fixing, attention should be paid to the clamping height on the front frame 93, and it should be ensured that the clamping height of the two adjustable mounting seats 10 is consistent to ensure that the rut detection beam 1 is in a horizontal state after installation, resulting in more accurate testing data. The equipment box 8 fixed on the base plate 91 can be used to assemble batteries and power supplies to power the sensors. The wiring harnesses (data output lines and conductive wires) of each laser rangefinder sensor 2 pass through the inside of the rut detection beam 1 and then through the conduit 16 into the equipment box 8. This effectively ensures that the wiring harnesses of each sensor are in a sealed protective environment, preventing exposure and damage. The trolley wheels 92 are four 150mm diameter polyurethane casters, two of which have brakes. The polyurethane wheels 92 are wear-resistant, quiet, and non-slip, adaptable to various ground conditions; the caster design makes the trolley maneuverable and convenient for operation in confined spaces. Braking device: A foot-operated brake structure is used, allowing operators to easily control the braking of the wheels 92 via a foot pedal. The braking force is no less than 200N, ensuring the trolley remains stable during testing and preventing accidental slippage. The equipment enclosure is made of 2mm thick aluminum alloy sheet with anodized surface treatment, which ensures both the strength and corrosion resistance of the enclosure while reducing the overall weight.The top cover is connected to the enclosure by hinges and is equipped with sealing strips to achieve good waterproof and dustproof performance, meeting the IP65 protection level requirements.

[0038] like Figure 5 As shown, in this embodiment, the front frame 93 is inverted U-shaped, including two bases fixedly mounted on the base plate 91, uprights fixedly mounted on the bases, and a crossbar fixed to the top of the two uprights. The equipment box 8 is placed between the two bases and fixed to the base plate 91 by fasteners. The rear frame 94 includes two uprights and a crossbar placed between the two uprights, with a horizontally arranged U-shaped bar connected to the top of the two uprights. The cable threading hole 14 on the side of the equipment box 8 is equipped with a waterproof connector and a rubber cable sleeve to prevent cable abrasion and rainwater intrusion.

[0039] The adjustable mounting base 10 in this embodiment consists of a front connecting base and a rear clamping head. The front connecting base includes a horizontally arranged mounting plate and side plates fixed on the left, right, and rear sides of the mounting plate. The mounting plate is in close contact with the upper surface of the adjusting base 15 and is fixed by adjusting bolts and adjusting nuts. The rear clamping head is a conventional clamping head, consisting of a fixed clamping block with a slot and a movable clamping block rotatably mounted on one side of the fixed clamping block. The movable clamping block has a groove in the middle corresponding to the slot, and the opposite side of the rotating end is in contact with the fixed clamping block and is fixed by fasteners. After the movable clamping block rotates to a certain angle and is in contact with the fixed clamping block, a clamping space is formed between the slot and the groove to cooperate with the upright on the front frame.

[0040] Furthermore, a rectangular shelf 95 is fixedly installed between the front frame 93 and the rear frame 94. Four rectangularly distributed clamping heads (which can be clamps or other existing clamping devices) are spaced apart at the lower end of the shelf 95. The shelf 95 is clamped to the upper ends of the front frame 93 and the rear frame 94 by the clamping heads. A horizontally arranged U-shaped push rod 96 is also connected to the rear frame 94. Thus, the shelf 95 allows inspection personnel to easily place personal belongings or display devices to wirelessly receive data from various sensors and display it on the display device. The U-shaped push rod 96 facilitates the inspection personnel in pushing the inspection vehicle.

[0041] In specific implementations, a data transmission module and a data processing module can also be installed in the equipment box of Embodiments 2 and 3. The data transmission module is used to receive real-time data detected by each laser ranging sensor 2 at different time periods and transmit the data to the data processing module. The data processing module is used to process the received data and finally display the detection data through a visual table.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. An intelligent rail transit road surface detection mechanism, comprising a rut detection beam suspended on a detection vehicle, wherein multiple laser ranging sensors are installed at intervals on the lower end face of the rut detection beam; characterized in that, The rut detection beam is box-shaped and has a wiring space inside for placing sensor wiring harnesses. Multiple through holes are provided on the bottom surface of the rut detection beam for the wiring harnesses of the laser rangefinder sensor to pass through. At least one conduit for leading out the sensor wiring harness is provided on one side of the rut detection beam. At least two adjusting seats are also installed at intervals on the back of the rut detection beam. Each adjusting seat has an adjusting bolt that penetrates the adjusting seat. The adjusting bolt is vertically positioned and has two adjusting nuts located on the upper and lower sides of the adjusting seat, respectively.

2. The intelligent rail transit road surface detection mechanism according to claim 1, characterized in that, The rut detection beam consists of a detection box with an opening at the top and a sealing cover for sealing the opening at the top of the detection box.

3. The intelligent rail transit road surface detection mechanism according to claim 1 or 2, characterized in that, Multiple sets of sensor mounting holes for installing laser rangefinder sensors are provided on the lower end face of the rut detection beam. Each set of sensor mounting holes contains multiple evenly distributed mounting holes.

4. The intelligent rail transit road surface detection mechanism according to claim 3, characterized in that, The rut detection beam is made of aluminum alloy or high-strength alloy steel.

5. A testing vehicle containing an intelligent rail transit road surface testing mechanism, comprising the intelligent rail transit road surface testing mechanism as described in any one of claims 1-4 and a carriage, characterized in that, A fixed bracket is fixedly installed on the carriage. One end of the fixed bracket extends out of the rear end of the carriage, and two mounting lugs corresponding to the adjusting seats are provided on the extended end. The upper end of the adjusting bolt passes through the mounting lugs and is fixed to the fixed bracket by a fastening nut. An equipment box with a top cover is also installed on the fixed bracket. A DC battery and / or a regulated power supply, as well as a data acquisition device, are fixedly installed in the equipment box. The end of the conduit is connected to one side of the equipment box, and the wiring harness of each laser ranging sensor is introduced into the equipment box and electrically connected to the output terminal of the DC battery or regulated power supply in the equipment box, and connected to the data input terminal of the data acquisition device.

6. The inspection vehicle containing an intelligent rail transit road surface inspection mechanism according to claim 5, characterized in that, A wire hole is provided on the equipment box, and the end of the wire conduit is sealed and connected to the wire hole to connect the data transmission line and conductive wire bundle of each laser ranging sensor into the equipment box.

7. The inspection vehicle containing an intelligent rail transit road surface inspection mechanism according to claim 5 or 6, characterized in that, The fixed bracket is rectangular and is composed of four rectangular tubes connected together. Multiple positioning seats are provided at intervals on the fixed bracket. The fixed bracket is fixed to the carriage by bolts passing through the positioning seats and threaded connection or by clamping and fixing to the carriage.

8. The inspection vehicle containing an intelligent rail transit road surface inspection mechanism according to claim 7, characterized in that, The equipment box is equipped with an insulating partition to separate the DC battery and the regulated power supply. A heat dissipation vent is provided on the side of the equipment box. A cooling fan is installed inside the equipment box and is electrically connected to the DC battery and / or the regulated power supply.

9. A testing vehicle comprising an intelligent rail transit road surface testing mechanism, comprising the intelligent rail transit road surface testing mechanism as described in any one of claims 1-4 and a hand-push testing vehicle; characterized in that, The hand-push inspection vehicle includes a base plate and a front frame and a rear frame fixedly mounted on the base plate. The rut detection beam is located on one side of the front frame. An adjustable mounting seat with its end clamped and fixed to the front frame is fixedly installed on the adjusting seat of the rut detection beam between two adjusting nuts. An equipment box with a top cover is fixedly installed on the base plate. A DC battery and / or a regulated power supply are fixedly installed inside the equipment box. The end of the conduit is connected to one side of the equipment box and the wiring harness of each laser ranging sensor is introduced into the equipment box and electrically connected to the output terminal of the DC battery or regulated power supply inside the equipment box.

10. The inspection vehicle containing an intelligent rail transit road surface inspection mechanism according to claim 9, characterized in that, A storage plate is fixedly installed between the front frame and the rear frame, and a U-shaped push rod is connected to the rear frame.

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