Urban rail transit signal detection device

Abstract

The application discloses a kind of urban rail transit signal detection devices, belongs to track detection device technical field, this urban rail transit signal detection device, including first detection dolly and second detection dolly, the top of first detection dolly and second detection dolly is fixed with first folding guide rail;The top of two first folding guide rails is equipped with the folding mechanism that can make track detection car contract into a compact shape;The top side of folding mechanism is equipped with the splicing mechanism that ensures accuracy and stability during splicing process.The application is equipped with folding mechanism, can be modularized to track detection car, can substantially reduce its volume under non-working condition on the premise of not affecting normal function of track detection car, make track detection car contract into a compact shape, reduce transportation cost and storage space requirement, improve the mobility and flexibility of equipment.

Description

Technical Field

[0001] This invention belongs to the technical field of track detection devices, specifically relating to an urban rail transit signal detection device. Background Technology

[0002] Urban rail transit is the backbone of urban public transportation. It features energy efficiency, land conservation, large capacity, all-weather operation, and is pollution-free and safe. As a green and environmentally friendly transportation system, it conforms to the principles of sustainable development and is particularly suitable for large and medium-sized cities. Urban rail transit systems are diverse, and according to their purpose, they can be divided into urban railways, suburban railways, subways, light rail transit, urban trams, monorail systems, maglev lines, airport connection railways, and new transportation systems. In urban rail transit systems, accurate positioning and data collection of trackside signaling equipment are crucial. Currently, the commonly used method is to utilize track inspection vehicles. To perform this task, the track inspection trolley, officially known as the track geometry condition detector, is mainly used in high-speed railways, trams, subways, and ballast railways with high design speeds. The track inspection trolley consists of a measuring trolley composed of gauge, level, and other measuring devices, a body prism, and an industrial control computer, as well as a high-precision total station and a wireless communication unit. It is a measuring device for detecting the internal geometry (gauge, level, alignment, elevation, positive and negative twist) and external geometry (track centerline deviation, elevation deviation) of railway tracks. It is of great significance for the laying of high-speed railway track bed structures, the laying of long rails, the fine adjustment of long rails, and subsequent maintenance.

[0003] In the existing urban rail transit operation and maintenance system, the detection of traffic signals on the tracks is a crucial task to ensure the safety and efficiency of train operation. Currently, the common approach is to use track inspection vehicles to perform this task. These track inspection vehicles are usually equipped with professional detection devices that can comprehensively collect and analyze various signal parameters. The onboard computer performs preliminary data analysis and storage, and then technicians further study and evaluate the signal quality. However, track inspection vehicles are relatively large and have a complex structure. When moving between different stations, due to the characteristics of the vehicles themselves and route limitations, it often takes a long time to complete the scheduling and preparation work, which seriously reduces the overall work efficiency. This disadvantage is even more obvious when emergency repairs or temporary spot checks are required.

[0004] Therefore, there is an urgent need to provide an urban rail transit signal detection device to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an urban rail transit signal detection device.

[0006] The technical solution adopted to solve the above technical problems is: an urban rail transit signal detection device, including a first detection trolley and a second detection trolley, the top of the first detection trolley and the top of the second detection trolley are both fixed with a first folding guide rail; The top ends of the two first folding guide rails are provided with a folding mechanism that enables the track inspection vehicle to retract into a compact shape. The top side of the folding mechanism is provided with a splicing mechanism to ensure accuracy and stability during the splicing process, and the other top side of the folding mechanism is provided with a limiting mechanism to avoid interfering with the folding operation of the track inspection vehicle. The top of the splicing mechanism is equipped with a quick-release mechanism that allows for rapid assembly and disassembly of the detection module.

[0007] Using the above technical solution, the operator unfolds the track inspection vehicle to the working state, starts the power system of the first and second inspection trolleys, and makes it slowly move along the urban track.

[0008] Furthermore, the folding mechanism includes two first folding sliders slidably mounted outside the two first folding guide rails, four quarter rotating bases fixed to the top of each of the four first folding sliders, four quarter rotating disks rotatably mounted between the four quarter rotating bases, and a second folding slider fixed to the top of each of the four quarter rotating disks.

[0009] With the above technical solution, when the four quarter-rotating disks and the four quarter-rotating bases are separated, they are limited by the first folding guide rail and the second folding guide rail, preventing them from rotating. When the four quarter-rotating disks and the four quarter-rotating bases are joined together, the four quarter-rotating disks can rotate through the four quarter-rotating bases, thus facilitating the shrinking of the track inspection vehicle into a compact shape, greatly reducing the space occupied, and making transportation and storage convenient.

[0010] Furthermore, two second folding guide rails are slidably installed inside the four second folding sliders, and a mounting folding plate is fixed to the top of each of the two second folding sliders. A fixing bolt with one end penetrating through and extending into the interior of the first folding guide rail is threaded onto both ends of the mounting folding plate.

[0011] Through the above technical solution, the first folding guide rail, the second folding guide rail, the first folding slider, the second folding slider, the quarter-rotating base, and the quarter-rotating disk all have fixing screw holes inside for threaded connection with fixing bolts. The fixing bolts can fix the unfolded first and second folding guide rails. When unfolding the track inspection vehicle, the two second folding guide rails and the mounting folding plate are rotated by hand, causing the four second folding sliders to drive the four quarter-rotating disks to rotate through the four quarter-rotating bases, making the second folding guide rails and the first folding guide rails form a cross. The two first folding guide rails and the second folding guide rails are then separated by hand, making them form a grid pattern. The fixing bolts are then rotated with a tool. The fixing bolts secure the unfolded first and second folding guide rails, enabling rapid assembly of the track inspection vehicle. When folding the track inspection vehicle, the fixing bolts are loosened, allowing the first folding guide rail to move smoothly on the second folding guide rail via the first and second folding sliders. The second folding guide rail also moves smoothly on the first folding guide rail via the first and second folding sliders, without interfering with each other, thus folding the track inspection vehicle. When the four quarter-rotating discs and four quarter-rotating bases are joined, the four quarter-rotating discs rotate via the four quarter-rotating bases, facilitating the retraction of the track inspection vehicle into a compact shape. This reduces transportation costs and storage space requirements, while improving the mobility and flexibility of the equipment.

[0012] Furthermore, the splicing mechanism includes mounting folding rods that are rotatably mounted on the top of one side of two mounting folding plates, and L-shaped folding plates are rotatably mounted on the top of one side of each of the two mounting folding rods, with positioning inserts fixed to the top of each of the two L-shaped folding plates.

[0013] With the above technical solution, the folding plate, folding rod, and positioning plate are normally on the same horizontal line, which will not interfere with the folding of the track inspection vehicle. When in use, the folding rod is rotated 90 degrees by the folding plate, and the positioning plate is rotated 90 degrees by the folding rod to splice the two positioning plates together.

[0014] Furthermore, a spring shell is fixed to one side of the mounting folding rod, a cylindrical spring is fixed to the inner wall of the spring shell, a rack insert is fixed to one end of the cylindrical spring, and a folding plate slot is provided at the bottom end of the L-shaped folding plate to engage with the rack insert.

[0015] With the above technical solution, after the folding mechanism is unfolded, the mounting folding rods on both sides of the mounting folding plate are rotated 90 degrees respectively. Then, the positioning insert plate is rotated 90 degrees through the mounting folding rods to splice the two positioning insert plates. The two rack inserts are in an overlapping state when they are opposite each other. The columnar spring drives the rack inserts to insert into the folding plate slot, so that the two rack inserts fix the two positioning inserts through the folding plate slot and connect and fix the two mounting folding rods. When folding the splicing mechanism, the two rack inserts are pressed back into the spring shell by hand, and the mounting folding rods and positioning inserts are folded 90 degrees respectively, so that the mounting folding rods and positioning inserts are on the same horizontal line as the mounting folding plate. This does not affect the folding operation of the track inspection vehicle, avoids interference with the folding operation of the track inspection vehicle, and improves the overall operability and reliability of the equipment.

[0016] Furthermore, the limiting mechanism includes torsion spring housings respectively fixed to the top of the other side of the two mounting folding plates. A folding rod is rotatably mounted inside the torsion spring housing, and a rod torsion spring is fixed between one end of the folding rod and the torsion spring housing.

[0017] With the above technical solution, the folding plate limiting plate on the rotating rod driven by the torsion spring is normally aligned and parallel with the folding plate, which will not interfere with the rotation of the folding rod.

[0018] Furthermore, a rotating gear is fixed to the outside of the folding rod, and the outside of the rotating gear is meshed with one end of the rack insert. Folding plate limiting plates are fixed on both sides of the rotating gear, and the bottom end of the L-shaped folding plate is provided with a folding plate limiting groove that is fitted and connected with the folding plate limiting plate.

[0019] With the above technical solution, when the folding rod and positioning plate are on the same horizontal line as the folding plate, the rack and pinion rod is released. The cylindrical spring drives the rack and pinion rod to extend outward from the spring shell. The rack and pinion rod drives the rotating gear and the folding rod to rotate 90 degrees, so that the folding rod drives the folding plate limiting plate to fix the L-shaped folding plate through the folding plate limiting groove. At the same time, it fixes the folding rod after folding, ensuring the accuracy and stability of the two positioning plates during the splicing process and avoiding problems such as inconvenience in equipment installation caused by splicing errors.

[0020] Furthermore, the quick-release mechanism includes a mounting base housing that fits against the top of the positioning insert plate. The top of the positioning insert plate is provided with four quick-release slots. Four quick-release rotating rods are rotatably installed inside the mounting base housing. A three-dimensional laser camera is fixed to the top of the mounting base housing.

[0021] Through the above technical solution, the 3D laser camera is quickly installed by connecting the quick-release rotating rod of the mounting base housing with the quick-release slot of the positioning plate. Simultaneously, the quick-release rotating rod also allows for the rapid assembly and disassembly of other detection modules, enhancing the adaptability and versatility of the equipment. This enables it to meet the needs of various complex detection tasks and improves the equipment's market competitiveness. The 3D laser camera captures traffic signal conditions around urban rail transit, and upon returning, transmits the captured data to a computer. The computer processes and analyzes the captured data according to a predetermined algorithm. If an abnormal traffic signal is detected, a warning window pops up on the software interface displaying detailed information.

[0022] Furthermore, three synchronous connecting rods are rotatably installed between the four quick-release rotating rods, and an adjusting rotating rod is rotatably installed on the inner bottom wall of the mounting base shell. An adjusting bolt with one end penetrating and extending to the outside of the mounting base shell is installed on the internal thread of the adjusting rotating rod. The outside of the adjusting bolt is rotatably connected to a synchronous connecting rod, and the inner bottom wall of the mounting base shell is provided with a fixing hole that engages with the adjusting bolt.

[0023] The above technical solution allows for manual rotation of the adjusting bolt, which in turn drives the adjusting rod to rotate. The adjusting rod, through three synchronous connecting rods, drives four quick-release rods to rotate 90 degrees, thus fixing the quick-release rods to the positioning insert plate. Manually rotating the adjusting bolt extends it into the fixing hole, securing the adjusting bolt and enabling rapid assembly and disassembly of the 3D laser camera. This reduces downtime, significantly shortens equipment maintenance time, and improves maintenance efficiency and flexibility.

[0024] The beneficial effects of this invention are as follows: (1) By providing a folding mechanism, the present invention enables the modular design of the track inspection vehicle, which can significantly reduce its volume in the non-working state without affecting the normal function of the track inspection vehicle, so that the track inspection vehicle can be folded into a compact shape, reducing transportation costs and storage space requirements, improving the mobility and flexibility of the equipment, and ensuring the stability and reliability of the folding process by reasonably designing the connection points. (2) The present invention is provided with a splicing mechanism and a limiting mechanism. The splicing mechanism can connect two mounting folding rods and splice two positioning plates at the same time, ensuring the accuracy and stability of the two positioning plates during the splicing process, avoiding problems such as inconvenience in equipment installation due to splicing errors, making equipment installation more convenient and efficient, and can effectively fix the folded mounting folding rods and positioning plates after folding, without affecting the folding operation of the track inspection vehicle, avoiding interference with the folding operation of the track inspection vehicle, and improving the overall operability and reliability of the equipment. (3) By providing a quick-release mechanism, the present invention enables the rapid disassembly and assembly of the three-dimensional laser camera, reducing downtime, greatly shortening the equipment maintenance time, improving maintenance efficiency and flexibility, reducing the skill requirements of operators by eliminating the need for complex tools, reducing the risk of failure caused by human factors, and at the same time, facilitating the installation and adaptation of different detection modules, enhancing the adaptability and multifunctionality of the equipment, meeting the needs of various complex detection tasks, and improving the market competitiveness of the equipment. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an unfolded structural diagram of the folding mechanism, splicing mechanism, and limiting mechanism of the present invention; Figure 3 This is a folding structure diagram of the folding mechanism, splicing mechanism, and limiting mechanism of the present invention; Figure 4 This is an exploded structural diagram of the folding mechanism and splicing mechanism of the present invention; Figure 5 This is an exploded view of the first and second folding sliders of the present invention; Figure 6 This is a schematic diagram of the internal structure of the splicing mechanism of the present invention; Figure 7 This is an exploded view of the limiting mechanism of the present invention; Figure 8 This is a schematic diagram of the folding mechanism and splicing mechanism of the present invention; Figure 9 This is an exploded structural diagram of the splicing mechanism of the present invention; Figure 10 This is a schematic diagram of the quick-release mechanism of the present invention; Figure 11 This is an exploded structural diagram of the quick-release mechanism of the present invention.

[0026] Reference numerals: 1. First inspection carriage; 2. Second inspection carriage; 3. First folding guide rail; 4. Folding mechanism; 401. First folding slider; 402. Quarter-rotating base; 403. Quarter-rotating disk; 404. Second folding slider; 405. Second folding guide rail; 406. Mounting folding plate; 407. Fixing bolt; 5. Splicing mechanism; 501. Mounting folding rod; 502. L-shaped folding plate; 503. Positioning insert plate; 504. Spring shell; 505. 506. Cylindrical spring; 507. Rack and pinion insert; 6. Folding plate slot; 6. Limiting mechanism; 601. Torsion spring housing; 602. Folding rotating rod; 603. Rotating rod torsion spring; 604. Rotating rod gear; 605. Folding plate limiting plate; 606. Folding plate limiting groove; 7. Quick release mechanism; 701. Mounting base housing; 702. Quick release slot; 703. Quick release rotating rod; 704. Synchronous connecting rod; 705. Adjusting rotating rod; 706. Adjusting bolt; 707. 3D laser camera. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] like Figures 1-11As shown, this embodiment of an urban rail transit signal detection device includes a first detection trolley 1 and a second detection trolley 2. The top ends of both the first detection trolley 1 and the second detection trolley 2 are fixed with first folding guide rails 3. The top ends of the two first folding guide rails 3 are provided with folding mechanisms 4 that allow the rail detection trolleys to retract into a compact shape. The folding mechanism 4 includes two first folding sliders 401 slidably mounted on the outside of the two first folding guide rails 3. The top ends of each of the four first folding sliders 401 are fixed with quarter-rotating bases 402. Four quarter-rotating disks 403 are rotatably mounted between the four quarter-rotating bases 402. Each of the four quarter-rotating discs 403 has a second folding slider 404 fixed to its top. Two second folding guide rails 405 are slidably installed inside each of the four second folding sliders 404. Each of the two second folding sliders 404 has a mounting folding plate 406 fixed to its top. Both ends of the mounting folding plate 406 are threaded with a fixing bolt 407, one end of which passes through and extends into the interior of the first folding guide rail 3. The operator unfolds the track inspection vehicle to its working state, starts the power systems of the first inspection trolley 1 and the second inspection trolley 2, and makes it slowly move along the urban track. While unfolding the track inspection vehicle, the operator manually rotates the two second folding guide rails 405. The folding guide rail 405 and the mounting folding plate 406 cause the four second folding sliders 404 to drive the four quarter-rotating disks 403 to rotate through the four quarter-rotating bases 402, so that the second folding guide rail 405 and the first folding guide rail 3 are in a cross shape. The two first folding guide rails 3 and the second folding guide rail 405 are separated by hand, so that the two first folding guide rails 3 and the second folding guide rail 405 are in a grid shape. The fixing bolts 407 are rotated with a tool to fix the unfolded first folding guide rails 3 and the second folding guide rail 405, thereby enabling rapid assembly of the track inspection vehicle. When folding the track inspection vehicle, the fixing bolt 407 is loosened. The first folding guide rail 3 moves smoothly on the second folding guide rail 405 via the first folding slider 401 and the second folding slider 404. The second folding guide rail 405 moves smoothly on the first folding guide rail 3 via the first folding slider 401 and the second folding slider 404, thereby folding the track inspection vehicle. When the four quarter-rotating disks 403 and the four quarter-rotating bases 402 are spliced ​​together, the four quarter-rotating disks 403 are rotated through the four quarter-rotating bases 402, thereby facilitating the shrinking of the track inspection vehicle into a compact shape.

[0029] like Figures 4-9As shown, the top side of the folding mechanism 4 is provided with a splicing mechanism 5 to ensure accuracy and stability during the splicing process. The splicing mechanism 5 includes mounting folding rods 501 that are rotatably mounted on the top side of two mounting folding plates 406 respectively. L-shaped folding plates 502 are rotatably mounted on the top side of each of the two mounting folding rods 501. Positioning inserts 503 are fixed to the top of each of the two L-shaped folding plates 502. A spring shell 504 is fixed to one side of the mounting folding rod 501. A cylindrical spring 505 is fixed to the inner wall of the spring shell 504. A rack insert 506 is fixed to one end of the cylindrical spring 505. The bottom end of the L-shaped folding plate 502 is provided with a folding plate slot 507 that engages with the rack insert 506. After the folding mechanism 4 is unfolded, the mounting folding plates are respectively... The mounting folding rods 501 on both sides of 406 are rotated 90 degrees, and then the positioning inserts 503 are rotated 90 degrees through the mounting folding rods 501 to splice the two positioning inserts 503. The columnar spring 505 drives the rack inserts 506 to insert into the folding plate slot 507, so that the two rack inserts 506 fix the two positioning inserts 503 through the folding plate slot 507, and at the same time connect and fix the two mounting folding rods 501. When folding the splicing mechanism 5, the two rack inserts 506 are pressed back into the spring shell 504 by hand, and the mounting folding rods 501 and the positioning inserts 503 are folded 90 degrees respectively, so that the mounting folding rods 501 and the positioning inserts 503 are on the same horizontal line as the mounting folding plate 406.

[0030] like Figure 6 and Figure 7 As shown, a limiting mechanism 6 is provided on the other side of the top of the folding mechanism 4 to avoid interfering with the folding operation of the track inspection vehicle; the limiting mechanism 6 includes a torsion spring housing 601 fixed to the top of the other side of the two mounting folding plates 406 respectively. A folding rod 602 is rotatably mounted inside the torsion spring housing 601. A rod torsion spring 603 is fixed between one end of the folding rod 602 and the torsion spring housing 601. A rod gear 604 is fixed to the outside of the folding rod 602. The outside of the rod gear 604 is meshed with one end of the rack insert 506. Folding plate limiting plates 605 are fixed on both sides of the rod gear 604. The bottom end of the L-shaped folding plate 502 is provided with a fitting that engages with the folding plate limiting plate 605. The connecting folding plate limiting groove 606 normally allows the folding plate limiting plate 605 on the folding rod 602 to be parallel and in contact with the mounting folding plate 406, driven by the rotating rod torsion spring 603. When the mounting folding rod 501 and the positioning insert 503 are on the same horizontal line as the mounting folding plate 406, the rack insert 506 is released. When the column spring 505 drives the rack insert 506 to extend outward from the spring shell 504, the rack insert 506 drives the rotating rod gear 604 and the folding rod 602 to rotate 90 degrees. This causes the folding rod 602 to drive the folding plate limiting plate 605 to fix the L-shaped folding plate 502 through the folding plate limiting groove 606, and at the same time fix the folded mounting folding rod 501.

[0031] like Figure 10 and Figure 11 As shown, the splicing mechanism 5 has a quick-release mechanism 7 at its top, which allows for rapid assembly and disassembly of the detection module. The quick-release mechanism 7 includes a mounting base housing 701 that fits against the top of the positioning insert plate 503. The top of the positioning insert plate 503 has four quick-release slots 702. Four quick-release rotating rods 703 are rotatably mounted inside the mounting base housing 701. A 3D laser camera 707 is fixed to the top of the mounting base housing 701. Three synchronous connecting rods 704 are rotatably mounted between the four quick-release rotating rods 703. An adjusting rotating rod 705 is rotatably mounted on the inner bottom wall of the mounting base housing 701. An adjusting bolt 706, with one end penetrating and extending to the outside of the mounting base housing 701, is threaded inside the adjusting rotating rod 705. The outside of the adjusting bolt 706 is rotatably connected to a synchronous connecting rod 704. The inner bottom wall of the mounting base housing 701 has a fixing hole that engages with the adjusting bolt 706. The 3D laser camera 707 passes through... The quick-release rotating rod 703 of the mounting base housing 701 is aligned with the quick-release slot 702 of the positioning plate 503. The adjusting bolt 706 is rotated by hand, which drives the adjusting rod 705 to rotate. The adjusting rod 705 drives the four quick-release rotating rods 703 to rotate 90 degrees through three synchronous connecting rods 704, so that the quick-release rotating rods 703 are fixedly connected to the positioning plate 503. The adjusting bolt 706 is rotated by hand to extend into the fixing hole and fix the adjusting bolt 706. Then, the 3D laser camera 707 can be quickly installed and removed. The 3D laser camera 707 captures traffic signal conditions around the urban rail. After returning, the captured data is transmitted to the computer. The computer processes and analyzes the captured data according to a predetermined algorithm. Once an abnormal traffic signal is detected, a warning window pops up on the software interface to display detailed information.

[0032] The working principle of this embodiment is as follows: The operator unfolds the track inspection vehicle to the working state, and manually rotates the two second folding guide rails 405 and the mounting folding plate 406, causing the four second folding sliders 404 to drive the four quarter-rotating disks 403 to rotate through the four quarter-rotating bases 402, so that the second folding guide rails 405 and the first folding guide rails 3 form a cross. The two first folding guide rails 3 and the second folding guide rails 405 are then separated by hand, so that the two first folding guide rails 3 and the second folding guide rails 405 form a grid. The fixing bolts 407 are rotated with a tool to fix the unfolded first folding guide rails 3 and the second folding guide rails 405, thereby enabling the track inspection vehicle to be quickly assembled. After mechanism 4 is unfolded, the mounting folding rods 501 on both sides of the mounting folding plate 406 are rotated 90 degrees respectively. Then, the positioning insert plate 503 is rotated 90 degrees through the mounting folding rods 501 to splice the two positioning insert plates 503. The columnar spring 505 drives the rack insert 506 to insert into the folding plate slot 507, so that the two rack inserts 506 fix the two positioning insert plates 503 through the folding plate slot 507, and at the same time connect and fix the two mounting folding rods 501. The 3D laser camera 707 is connected to the quick-release slot 702 of the positioning insert plate 503 through the quick-release rotating rod 703 of the mounting base shell 701. The adjusting bolt 706 is rotated by hand, which drives the adjusting rotating rod 705 to rotate. The throttle rod 705 drives four quick-release throttle rods 703 to rotate 90 degrees via three synchronous connecting rods 704, fixing the quick-release throttle rods 703 to the positioning insert plate 503, completing the unfolding and assembly of the track inspection vehicle. The power systems of the first inspection trolley 1 and the second inspection trolley 2 are then activated, allowing them to slowly travel along the urban track. The 3D laser camera 707 captures images of traffic signals on both sides of the track. Upon return, the captured data is transmitted to a computer, which processes and analyzes the data according to a predetermined algorithm. If an abnormal traffic signal is detected, a warning window displays detailed information. When transferring the track inspection vehicle, the adjusting bolt 706 is loosened by hand, and then the adjusting rod 705 is returned to its original position. The 3D laser camera 707 is removed. The two rack inserts 506 are manually pressed back into the spring housing 504. The mounting folding rod 501 and positioning plate 503 are then folded ninety degrees, bringing them to the same horizontal level as the mounting folding plate 406. At this point, the rotating rod torsion spring 603 drives the folding plate limiting plate 605 on the folding rotating rod 602 to be parallel and in contact with the mounting folding plate 406. Once the mounting folding rod 501 and positioning plate 503 are on the same horizontal level as the mounting folding plate 406, the rack insert 506 is released. As the cylindrical spring 505 drives the rack insert 506 to extend outwards from the spring housing 504, the rack insert 506 drives the rotating rod gear 604 and the folding rotating rod 602 to rotate ninety degrees.The folding lever 602 drives the folding plate limiting plate 605 to fix the L-shaped folding plate 502 through the folding plate limiting groove 606, and at the same time fixes the folded mounting folding rod 501. Loosening the fixing bolts 407 allows the first folding guide rail 3 to move smoothly on the second folding guide rail 405 via the first folding slider 401 and the second folding slider 404. The second folding guide rail 405, in turn, moves smoothly on the first folding guide rail 3 via the first folding slider 401 and the second folding slider 404, thereby folding the track inspection vehicle. When the four quarter-rotating disks 403 and the four quarter-rotating bases 402 are spliced ​​together, the four quarter-rotating disks 403 are rotated via the four quarter-rotating bases 402, thus facilitating... The track inspection vehicle is folded into a compact shape. When folding the vehicle, the fixing bolt 407 is loosened. The first folding guide rail 3 moves smoothly on the second folding guide rail 405 via the first folding slider 401 and the second folding slider 404. The second folding guide rail 405 then moves smoothly on the first folding guide rail 3 via the first folding slider 401 and the second folding slider 404, thus folding the track inspection vehicle. When the four quarter-rotating disks 403 and four quarter-rotating bases 402 are joined, the four quarter-rotating disks 403 rotate via the four quarter-rotating bases 402, facilitating the folding of the track inspection vehicle into a compact shape, making it convenient for transfer and transportation.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A signal detection device for urban rail transit, comprising a first detection trolley (1) and a second detection trolley (2), characterized in that: The top of the first detection trolley (1) and the second detection trolley (2) are both fixed with a first folding guide rail (3); The top ends of the two first folding guide rails (3) are provided with a folding mechanism (4) that enables the track inspection vehicle to retract into a compact shape. The folding mechanism (4) includes two first folding sliders (401) that are slidably installed on the outside of the two first folding guide rails (3). The top ends of the four first folding sliders (401) are all fixed with a quarter rotating base (402). Four quarter rotating disks (403) are rotatably installed between the four quarter rotating bases (402). The top ends of the four quarter rotating disks (403) are all fixed with a second folding slider (404). Two second folding guide rails (405) are slidably installed inside the four second folding sliders (404). The top of each of the two second folding sliders (404) is fixed with a mounting folding plate (406). Both ends of the mounting folding plate (406) are threaded with a fixing bolt (407) that passes through and extends into the interior of the first folding guide rail (3). The top side of the folding mechanism (4) is provided with a splicing mechanism (5) to ensure accuracy and stability during the splicing process. The splicing mechanism (5) includes a mounting folding rod (501) that is rotatably installed on the top side of two mounting folding plates (406). An L-shaped folding plate (502) is rotatably installed on the top side of each of the two mounting folding rods (501). A positioning insert (503) is fixed on the top of each of the two L-shaped folding plates (502). A spring shell (504) is fixed to one side of the mounting folding rod (501), a columnar spring (505) is fixed to the inner wall of the spring shell (504), a rack insert (506) is fixed to one end of the columnar spring (505), and a folding plate slot (507) is provided at the bottom end of the L-shaped folding plate (502) to engage with the rack insert (506). The top of the folding mechanism (4) is provided with a limiting mechanism (6) to avoid interfering with the folding operation of the track inspection vehicle. The limiting mechanism (6) includes a torsion spring housing (601) fixed to the top of the other side of the two mounting folding plates (406). A folding rod (602) is rotatably installed inside the torsion spring housing (601). A rod torsion spring (603) is fixed between one end of the folding rod (602) and the torsion spring housing (601). The folding lever (602) is fixed with a lever gear (604) on the outside. The outside of the lever gear (604) is meshed with one end of the rack insert (506). Folding plate limiting plates (605) are fixed on both sides of the lever gear (604). The bottom end of the L-shaped folding plate (502) is provided with a folding plate limiting groove (606) that is fitted and connected to the folding plate limiting plate (605). The splicing mechanism (5) is equipped with a quick-release mechanism (7) at its top, which enables the detection module to be quickly assembled and disassembled.

2. The urban rail transit signal detection device according to claim 1, characterized in that, The quick-release mechanism (7) includes a mounting base shell (701) that fits against the top of the positioning insert plate (503). The top of the positioning insert plate (503) is provided with four quick-release slots (702). Four quick-release rotating rods (703) are rotatably installed inside the mounting base shell (701). A three-dimensional laser camera (707) is fixed to the top of the mounting base shell (701).

3. The urban rail transit signal detection device according to claim 2, characterized in that, Three synchronous connecting rods (704) are rotatably installed between the four quick-release rotating rods (703). An adjusting rod (705) is rotatably installed on the inner bottom wall of the mounting base shell (701). An adjusting bolt (706) with one end penetrating through and extending to the outside of the mounting base shell (701) is installed on the internal thread of the adjusting rod (705). The outside of the adjusting bolt (706) is rotatably connected to a synchronous connecting rod (704). The inner bottom wall of the mounting base shell (701) is provided with a fixing hole that engages with the adjusting bolt (706).

Images