A reinforced protective tunnel widening driving protection device and method

Abstract

The application discloses a reinforced protection type tunnel widening driving protection device and method, which comprises a door-shaped frame, a plurality of moving parts are installed at the bottom of the door-shaped frame, and a widening protection mechanism is installed on the door-shaped frame; the widening protection mechanism comprises a jacking mechanism used for jacking the door-shaped frame, a supporting assembly comprising a top protection plate and side protection plates, and an unfolding assembly connected with the top protection plate at the upper end and connected with the side protection plates at the left and right ends. The device is pushed into a predetermined position in the tunnel through the moving parts, and then the jacking mechanism is started. The jacking mechanism drives the door-shaped frame to ascend. When the top protection plate abuts against the top wall of the tunnel, the unfolding assembly unfolds the side protection plates on the left and right sides under the reaction force of the top protection plate, so that effective support is provided for the top of the tunnel.

Description

Technical Field

[0001] This invention relates to the field of tunnel widening construction technology, and in particular to an enhanced protective device and method for vehicle protection during tunnel widening. Background Technology

[0002] With the continuous improvement of my country's highway and urban road networks and the sustained surge in traffic flow, tunnels built in the early stages have gradually revealed problems such as insufficient capacity, cross-sectional dimensions not meeting current standards, and poor adaptability to various vehicle types. Some existing tunnels, built decades ago, were limited by the design standards and traffic demands of that time, and are mostly single-lane or double-lane designs with insufficient lane width, clearance, and emergency space, making them difficult to adapt to the current high-volume, multi-vehicle traffic demands. Currently, tunnel widening and reconstruction has become an important engineering measure to alleviate traffic bottlenecks and improve road safety and efficiency.

[0003] When widening or renovating a tunnel, construction protection measures are necessary. In the prior art, Chinese patent document CN222949890U discloses a tunnel construction protection device. This device includes a support unit and a frame structure. The support unit includes a top support plate and side support plates, which provide all-around support and protection for the tunnel's inner wall. Additionally, the frame structure is equipped with an adjustment unit, which allows adjustment of the height of the top support plate to accommodate tunnels of different heights. The two sides of the frame structure are connected to the side support plates via traction units, which ensure the stability of the side support plates, thereby improving the effectiveness of supporting and protecting the tunnel's inner wall. Furthermore, the top support plate and... The side support plates are hinged together, which facilitates the adjustment of their position. In addition, the top support plate and the inner walls of the side support plates in this invention are provided with longitudinal and transverse reinforcing ribs, which improves the support and protection performance of the top support plate and the side support plates. However, its shortcomings are as follows: when carrying out protection work, after cutting and widening one section of the tunnel, the widening work of the next section of the tunnel continues. In the existing technology, a large number of workers are required to disassemble some parts of the protective device and then reinstall it in the next section of the tunnel. Each disassembly and reinstallation of the device takes time, which increases the overall construction period of the project. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide an enhanced protective tunnel widening vehicle protection device. When the gantry frame is lifted by the lifting mechanism, the top protective plate abuts against the tunnel roof wall. Under the reaction force of the top protective plate, the unfolding component unfolds the side protective plates on both sides, thereby achieving tunnel support and protection. When the next section needs to be supported and protected, the lifting mechanism lowers the height of the gantry frame, and the top and side protective plates separate from the tunnel. This solves the problem of repeated disassembly and assembly required in traditional support processes, improves the efficiency of support work, and reduces construction time.

[0005] Another technical problem to be solved by the present invention is to propose an enhanced protective method for vehicle protection during tunnel widening.

[0006] To achieve the above objectives, this application provides an enhanced protective tunnel widening vehicle safety device, including a gantry frame, with multiple movable parts installed at the bottom of the gantry frame, and a widening protection mechanism installed on the gantry frame; the widening protection mechanism includes:

[0007] Lifting mechanisms: Multiple lifting mechanisms are installed at the bottom of the portal frame for lifting the portal frame; The support assembly includes a top protective plate and side protective plates. The top protective plate is guided and slidably mounted on the top of the portal frame by multiple elastic support rods. Two sets of side protective plates are located on both sides of the portal frame, and the side protective plates are rotatably connected to the top protective plate. The unfolding assembly has multiple units installed along the axis of the gantry frame. The upper end of the unfolding assembly is connected to the top protective plate, and the left and right ends are connected to the side protective plates on both sides respectively. When the lifting mechanism lifts the gantry frame, the top protective plate comes into contact with the tunnel roof wall, and the unfolding assembly unfolds the side protective plates on both sides under the reaction force of the top protective plate.

[0008] The gantry frame includes a traveling frame, and two traveling frames are provided. A connecting frame is fixedly connected to the top of the two traveling frames, and a reinforcing frame is fixedly connected to the bottom of the connecting frame. The two sides of the reinforcing frame are fixedly connected to the two traveling frames. Multiple moving parts and a lifting mechanism are respectively installed at the bottom of the two traveling frames.

[0009] The lifting mechanism includes a hydraulic cylinder with its extension end facing outwards and a support block installed on the extension end.

[0010] The unfolding assembly includes a telescopic rod, a sliding shell, a slider, a rotating plate, and a vertical rod; Multiple sliding grooves are provided on both sides of the portal frame. A sliding shell is slidably installed in the sliding groove. The outer end of the sliding shell is hinged to one end of the telescopic rod, and a slider is fixedly installed on the inner end. The slider is slidably connected to the sliding groove. The other end of the telescopic rod is hinged to the inner wall of the side protective plate. The top of the slider is hinged to a rotating plate, and the top of the rotating plate is hinged to a vertical rod. The vertical rod is set longitudinally, and the top of the vertical rod is connected to and supported by the top protective plate. The vertical rod is slidably guided to the portal frame; the two opposing rotating plates have an included angle, which is greater than 40° and less than 150°.

[0011] The inner wall of the sliding shell is slidably connected to a square plate, and a steel pipe is fixedly connected to one side of the square plate. The end of the steel pipe is fixedly connected to one end of the inner wall of the sliding groove; the steel pipe slides through the sliding hole of the slider.

[0012] The bottom of the top protective plate is fixedly connected to multiple second protective frames, and the top of the vertical rod is installed and fixed to the second protective frames.

[0013] Multiple auxiliary components are also installed along the axis of the gantry frame. The auxiliary components are connected to the elastic frame rods. The auxiliary components are used to support the lower side of the side protective plate when the side protective plate is deployed, and to provide auxiliary support for the top protective plate when the support components are reset.

[0014] The auxiliary components include a top rod, a lifting plate, a concave part, a rotating rod, a crossbar, and an arc-shaped block; Each auxiliary assembly includes two top rods, which are connected to the longitudinal sliding guide of the portal frame. The upper end of the top rod is connected to the corresponding elastic frame rod, and the lower ends of the two top rods are fixed to the lifting plate. A concave part is installed in the middle of the lifting plate, and two rotating rods are hinged inside the concave part. A crossbar is hinged to the end of the rotating rod, and an arc-shaped block is fixedly installed after the end of the crossbar passes through the portal frame. The arc-shaped block abuts against the side protective plate. The crossbar is connected to the sliding guide of the portal frame. The two opposing rotating rods have an included angle, which is greater than 40° and less than 150°.

[0015] The lower end of the top rod is fitted with a lifting cylinder, which is connected to the lifting plate and is longitudinally slidingly connected to the gantry frame; a compression spring is installed inside the lifting cylinder.

[0016] Multiple first support frames are also fixedly connected to the lower side of the top protective plate, and the elastic frame rods are fixedly connected to the corresponding first support frames.

[0017] A sliding plate is slidably connected to one side of the inner wall of the side protective plate, and a telescopic rod is connected to the upper side of the sliding plate; a connecting shell is fixedly connected to one side of the bottom end of the sliding plate, and multiple round rollers are rotatably connected to both sides of the inner wall of the connecting shell.

[0018] The top protective plate has protruding connectors on its left and right sides, and the side protective plates are hinged to the connectors.

[0019] The top protective plate has arc-shaped plates at both ends along its axial direction.

[0020] The elastic support rod includes a rod body and a compression spring. The rod body is longitudinally slidingly guided and connected to the portal frame, and the compression spring is fitted onto the upper section of the rod body located in the portal frame.

[0021] A method for enhanced protection of vehicles during tunnel widening, employing the aforementioned enhanced protection device for vehicles during tunnel widening, includes the following steps: S1. Move the protective device to a predetermined position inside the tunnel using a movable component; S2. Start the jacking mechanism to lift the gantry frame and the widening protection mechanism so that the top protection plate abuts against the top of the tunnel and supports the top of the tunnel. S3. The jacking mechanism continues to lift the top protective plate. At this time, the top protective plate is squeezed by the top of the tunnel and cannot continue to rise. The gantry frame rises further, the unfolding component is stressed, and pushes the side protective plate to rotate and unfold to one side of the tunnel wall to support the tunnel wall. S4. Lock the lifting mechanism to maintain the height of the gantry frame.

[0022] Compared with the prior art, the above-conceptual technical solution conceived in this application has the following beneficial effects: 1. This invention employs a widening protection mechanism. A jacking mechanism raises a portal frame, which in turn raises the elastic support rods, the first support frame, and the top protective plate. The top protective plate supports the tunnel roof, preventing collapse. As the top protective plate continues to rise, it is compressed by the tunnel roof, causing the vertical rod to descend relative to the portal frame. The vertical rod drives a rotating plate and a slider to slide along the inner wall of a groove at the reinforcement frame. The slider moves the sliding shell and the telescopic rod, which in turn moves the sliding plate to one side. The sliding plate then moves the side protective plate, which rotates around a connector fixed to the top protective plate. This provides support for both sides of the tunnel, solving the problem of repeated disassembly and reassembly required in traditional support methods, significantly improving efficiency and reducing construction time. Furthermore, during the widening of the tunnel sides, the jacking mechanism continuously supports the tunnel sides, ensuring stability throughout construction, thus improving safety and preventing downtime.

[0023] 2. This invention, through the installation of a widening protection mechanism, allows the side protection plate to rotate towards both sides of the tunnel as the tunnel widens. During operation, the sliding plate drives the telescopic rod to slide down the inner wall of the side protection plate. The telescopic rod automatically extends, ensuring the sliding plate's smooth downward movement and guaranteeing that the tunnel sidewall remains supported throughout the widening process, preventing collapse or instability due to lack of support. The sliding plate also moves the connecting shell and the roller, which contacts the tunnel sidewall. The roller's rotation prevents equipment stagnation due to excessive resistance or jamming, maintaining smooth construction.

[0024] 3. This invention, through the setting of a widening and protection mechanism, ensures that when the tunnel widening work is completed and the next section of the tunnel needs to be widened, the lifting mechanism retracts, and the device gradually falls back. At this time, the side protection plate will reset under its own weight. During the rotation of the side protection plate, it will squeeze the side wall of the arc-shaped block, causing the arc-shaped block to drive the crossbar to move laterally. The crossbar drives the rotating rod to move, and the rotating rod drives the concave part, the lifting plate, and the lifting cylinder to rise vertically along the inner wall of the reinforcement frame. The lifting cylinder drives the top rod to rise, and when the top rod rises, it squeezes the bottom of the elastic frame rod, causing the elastic frame rod to move upward on the inner wall of the connecting frame. The elastic frame rod drives the first support frame and the top protection plate to rise, resetting the position between the top protection plate and the traveling frame. This allows it to be directly pushed into the next section of the tunnel, ensuring that the equipment can automatically return to its initial state after the widening work is completed and prepare for the subsequent tunnel construction. This design simplifies the operation process, eliminates the need for manual adjustment, and saves time and labor. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a top view of the overall structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the side structure of the reinforcement frame of the present invention.

[0028] Figure 3 This is a cross-sectional view of the top protective plate of the present invention.

[0029] Figure 4 For the present invention Figure 3 A magnified view of A in the middle.

[0030] Figure 5 This is a cross-sectional view of the side protective plate of the present invention.

[0031] Figure 6 For the present invention Figure 5 A magnified view of B in the middle.

[0032] Figure 7 This is a schematic diagram of the side structure of the telescopic rod of the present invention.

[0033] Figure 8 This is a bottom view of the second support frame structure of the present invention.

[0034] Figure 9 For the present invention Figure 8 A magnified view of C.

[0035] Figure 10 This is a schematic diagram of the exploded structure of the connecting frame of the present invention.

[0036] Figure label: 1. Overhead frame; 2. Connecting frame; 3. Reinforcing frame; 4. Moving parts; 5. Widened protective mechanism; 51. Hydraulic cylinder; 52. Support block; 53. Elastic support rod; 54. Support assembly; 55. Deployment assembly; 56. Auxiliary assembly; 541. First support frame; 542. Top protective plate; 543. Connector; 544. Side protective plate; 545. Sliding plate; 547. Connecting shell; 548. Circular roller; 549. Arc plate; 551. Telescopic rod; 552. Sliding shell; 553. Slide groove; 554. Sliding block; 555. Square plate; 556. Steel pipe; 558. Rotating plate; 559. Vertical rod; 5510. Second support frame; 561. Top rod; 562. Compression spring; 563. Lifting cylinder; 564. Lifting plate; 565. Concave part; 566. Rotating rod; 567. Crossbar; 568. Arc block. Detailed Implementation

[0037] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be noted that the specific embodiments described below are only used to illustrate the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0038] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0039] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection via an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1: See Figures 1-10 This invention provides an enhanced protective tunnel widening vehicle safety device, including a gantry frame, with multiple movable parts 4 installed at the bottom of the gantry frame, and a widening protection mechanism 5 installed on the gantry frame; the widening protection mechanism 5 includes: Lifting mechanism 51, multiple lifting mechanisms 51 are installed at the bottom of the portal frame for lifting the portal frame; The support assembly 54 includes a top protective plate 542 and side protective plates 544. The top protective plate 542 is guided and slidably installed on the top of the portal frame by multiple elastic support rods 53 and elastically supported. The two sets of side protective plates 544 are located on both sides of the portal frame, and the side protective plates 544 are rotatably connected to the top protective plate 542. Multiple unfolding components 55 are installed along the axis of the portal frame. The upper end of the unfolding component 55 is connected to the top protective plate 542, and the left and right ends are respectively connected to the side protective plates 544 on both sides. When the lifting mechanism 51 lifts the gantry frame, the top protective plate 542 comes into contact with the tunnel roof wall, and the unfolding assembly 55 unfolds the side protective plates 544 on both sides under the reaction force of the top protective plate 542.

[0041] In this embodiment, the gantry frame is a steel structure, and the moving part 4 can adopt an existing wheel or walking wheel structure. The moving part 4 is used to move the load-bearing gantry frame; the lifting mechanism 51 is used to lift the gantry frame; the support assembly 54 supports the tunnel; and the unfolding assembly 55 is used to drive the side protection plates 544 on both sides to open after the top protection plate 542 abuts against the top of the tunnel.

[0042] Using the above method: the device is pushed into a predetermined position inside the tunnel via the moving part 4, and then the lifting mechanism 51 is activated. The lifting mechanism 51 drives the gantry frame to rise. When the top protective plate 542 abuts against the tunnel roof wall, the unfolding assembly 55 unfolds the side protective plates 544 on both sides under the reaction force of the top protective plate 542, thereby providing effective support for the tunnel roof.

[0043] In this embodiment, see Figure 10The gantry frame includes a traveling frame 1, of which two traveling frames 1 are provided. A connecting frame 2 is fixedly connected to the top of each traveling frame 1, and multiple reinforcing frames 3 are fixedly connected to the bottom of the connecting frame 2. The two sides of the reinforcing frames 3 are fixedly connected to the two traveling frames 1 on both sides. Multiple moving parts 4 and a lifting mechanism 51 are respectively installed at the bottom of the two traveling frames 1.

[0044] In this embodiment, see Figure 2 The lifting mechanism 51 includes a hydraulic cylinder with its telescopic end facing outwards, and a support block 52 is mounted on the telescopic end of the hydraulic cylinder. Specifically, at least two lifting mechanisms 51 are mounted on each side of the lower end of the gantry frame.

[0045] See Figure 3 , 4 8 and 9, the unfolding assembly 55 includes a telescopic rod 551, a sliding shell 552, a slider 554, a rotating plate 558, and a vertical rod 559.

[0046] Specifically, see Figure 4 Multiple sliding grooves 553 are provided on both sides of the portal frame. A sliding shell 552 is slidably installed within each groove 553. The outer end of the sliding shell 552 is hinged to one end of a telescopic rod 551, and a slider 554 is fixedly installed at its inner end. The slider 554 is slidably connected to the groove 553. The other end of the telescopic rod 551 is hinged to the inner wall of the side protective plate 544. A rotating plate 558 is hinged to the top of the slider 554, and a vertical rod 559 is hinged to the top of the rotating plate 558. The vertical rod 559 is longitudinally arranged, and its top is connected and supported by the top protective plate 542. The vertical rod 559 slides and guides the portal frame. To prevent dead points at the hinges, the two opposing rotating plates 558 have an included angle, greater than 40° and less than 150°. Preferably, this included angle is between 80° and 100°.

[0047] When using, combine Figure 3 After the top protective plate 542 abuts against the tunnel roof, the gantry frame rises further. The vertical rod 559 drives the rotating plate 558 and the slider 554 to slide along the inner wall of the three grooves 553 of the reinforcement frame. The slider 554 drives the sliding shell 552 and the telescopic rod 551 to move outward, thereby pushing open the side protective plate 544. The hinge between the telescopic rod 551 and the sliding shell 552 is located on the outside of the groove 553, so it will not slide inside the groove 553 when the device is running or moving, preventing the telescopic rod 551 from getting stuck during rotation around the sliding shell 552. This provides support for both sides of the tunnel, solving the problem of repeated disassembly and assembly required in traditional support processes, greatly improving the efficiency of support work and reducing construction time.

[0048] Further, see Figure 4A square plate 555 is slidably connected to the inner wall of the sliding shell 552. A steel pipe 556 is fixedly connected to one side of the square plate 555, and the end of the steel pipe 556 is fixedly connected to one end of the inner wall of the slide groove 553. The steel pipe 556 slides through the sliding hole of the slider 554. By setting the steel pipe 556, the slider 554 is guided and limited, ensuring the stability of the operation of the sliding shell 552 and the slider 554. When the slider 554 drives the sliding shell 552 to move, the square plate 555 will slide inside the sliding shell 552.

[0049] See Figure 3 Multiple second support frames 5510 are fixedly connected to the bottom of the top protective plate 542, and the top of the vertical rod 559 is installed and fixed to the second support frames 5510. Setting up the second support frames 5510 can not only improve the structural strength of the top protective plate 542, but also shorten the length of the vertical rod 559 and improve the stability of the structure.

[0050] See Figure 3 The top protective plate 542 has protruding connectors 543 on its left and right sides respectively, and the side protective plate 544 is hinged to the connectors 543.

[0051] See Figure 1 , 2 Arc-shaped plates 549 are provided at both ends of the top protective plate 542 along the axial direction, so that the two ends of the top protective plate 542 form a cap structure, which plays a protective and guiding role.

[0052] See Figure 3 The elastic support rod 53 includes a rod body and a compression spring. The rod body is connected to the longitudinal sliding guide of the portal frame, and the compression spring is fitted onto the upper section of the rod body in the portal frame. The elastic support rod 53 provides elastic support for the top protective plate 542.

[0053] Example 2: Based on Example 1, see Figure 2 , 5 6. Multiple sets of auxiliary components 56 are also installed along the axis of the portal frame. The auxiliary components 56 are connected to the elastic frame rod 53. The auxiliary components 56 are used to support the lower side of the side protective plate 544 when the side protective plate 544 is unfolded; and to provide auxiliary support for the top protective plate 542 when the support component 54 is reset.

[0054] The auxiliary component 56 includes a top rod 561, a lifting plate 564, a concave part 565, a rotating rod 566, a crossbar 567, and an arc block 568.

[0055] See Figure 5 , 6Each auxiliary component 56 includes two top rods 561, which are connected to the longitudinal sliding guide of the portal frame. The upper end of the top rod 561 is connected to the corresponding elastic support rod 53, and the lower ends of the two top rods 561 are fixedly connected to the lifting plate 564. A concave part 565 is installed in the middle of the lifting plate 564. Two rotating rods 566 are hinged inside the concave part 565. A crossbar 567 is hinged to the end of the rotating rod 566. An arc-shaped block 568 is fixedly installed at the end of the crossbar 567 after passing through the portal frame. The arc-shaped block 568 abuts against the side protective plate 544. The crossbar 567 is connected to the sliding guide of the portal frame. Specifically, the two opposing rotating rods 566 have an included angle, which is greater than 40° and less than 150°. Preferably, the included angle is between 90° and 110°.

[0056] The above scheme is adopted: the lifting mechanism 51 drives the gantry frame to rise to a certain height, the top protective plate 542 abuts against the tunnel roof, and the unfolding component 55 unfolds the side protective plates 544 on both sides under the reaction force of the top protective plate 542, thereby providing effective support for the tunnel roof. At the same time, the top rod 561 moves downward relative to the gantry frame, driving the lifting plate 564, the concave part 565 and the rotating rod 566 to move downward. The rotating rod 566 pushes the crossbar 567 to extend outward, and the arc block 568 pushes against the lower side of the side protective plate 544 to support the lower side of the side protective plate 544.

[0057] After the tunnel widening work is completed, when the widening work of the next section of the tunnel begins, the jacking mechanism 51 drives the gantry frame to descend. At this time, the side protective plate 544, under its own weight, begins to reset. When the side protective plate 544 rotates, it applies a compressive force to the side wall of the arc-shaped block 568, forcing the arc-shaped block 568 to move the crossbar 567 laterally. The crossbar 567 further drives the rotating rod 566 to move, and the rotating rod 566 drives the concave part 565, the lifting plate 564, and the top rod 561 to rise vertically along the wall of the reinforcing frame 3. During the ascent, the top rod 561 compresses the bottom of the elastic frame rod 53, causing the elastic frame rod 53 to move upward along the inner wall of the connecting frame 2. The elastic frame rod 53 drives the first support frame 541 and the top protective plate 542 to rise together, thereby resetting the position between the top protective plate 542 and the gantry frame.

[0058] Further, see Figure 6 The lower end of the top rod 561 is fitted with a lifting cylinder 563, which is connected to the lifting plate 564. The lifting cylinder 563 is also connected to the longitudinal sliding guide of the gantry frame. A compression spring 562 is installed inside the lifting cylinder 563, which allows the arc-shaped block 568 to abut tightly against the side guard plate 544. When the top guard plate 542 is reset, it can also buffer the vibration and impact of the side guard plate 544.

[0059] Further, see Figure 5Multiple first support frames 541 are also fixedly connected to the lower side of the top protective plate 542, and the elastic support rods 53 are fixedly connected to the corresponding first support frames 541. Setting the first support frames 541 can not only improve the structural strength of the top protective plate 542, but also shorten the length of the elastic support rods 53, thereby improving the stability of the structure.

[0060] Example 3: Based on Example 1 or Example 2, see Figure 7 A sliding plate 545 is slidably connected to one side of the inner wall of the side protective plate 544, and a telescopic rod 551 is connected to the upper side of the sliding plate 545. A connecting shell 547 is fixedly connected to one side of the bottom end of the sliding plate 545, and multiple rollers 548 are rotatably connected to both sides of the inner wall of the connecting shell 547.

[0061] When the lifting mechanism 51 raises the gantry frame, the telescopic rod 551 pushes the sliding plate 545 to extend outward and downward. The sliding plate 545 drives the side protection plate 544 to move, and the side protection plate 544 rotates around the top protection plate 542. This allows the support assembly to provide more comprehensive support to the tunnel wall.

[0062] In this embodiment, the telescopic rod 551 can also be a hydraulic cylinder.

[0063] The sliding plate 545 drives the connecting shell 547 and the roller 548 to move. The roller 548 will come into contact with the side wall of the tunnel. Through the self-rotation of the roller 548, the equipment will not stop due to excessive resistance or jamming, thus maintaining the smoothness of construction.

[0064] Example 4: Based on Embodiment 1, 2, or 3, the present invention also discloses an enhanced protective method for vehicle protection during tunnel widening, which employs an enhanced protective device for vehicle protection during tunnel widening. The protection method includes the following steps: S1. Move the protective device to a predetermined position inside the tunnel via the movable part 4; S2. Start the lifting mechanism 51 to lift the gantry frame and the widening protection mechanism 5 so that the top protection plate 542 abuts against the top of the tunnel and supports the top of the tunnel. S3. The lifting mechanism 51 continues to lift. At this time, the top protective plate 542 is squeezed by the top of the tunnel and cannot continue to rise. The gantry frame rises further, the unfolding component 55 is subjected to force, and pushes the side protective plate 544 to rotate and unfold to one side of the tunnel sidewall to support the tunnel sidewall. S4. Lock the lifting mechanism 51 to maintain the height of the gantry frame.

[0065] Specifically, the usage process of this invention is as follows: The device moves to a preset position inside the tunnel via the moving part 4, and then drives the lifting mechanism 51. The lifting mechanism 51 drives the support block 52 to move downward. During the descent, the support block 52 will come into contact with the ground of the tunnel. The reaction force generated by the two causes the lifting mechanism 51 to drive the traveling frame 1, the connecting frame 2 and the reinforcing frame 3 to rise.

[0066] The reinforcing frame 3 drives the elastic frame rod 53, the first support frame 541, and the top protective plate 542 to move upward. The top protective plate 542 supports the top of the tunnel to prevent tunnel collapse. At this time, the top protective plate 542 continues to rise. Under the pressure of the tunnel top, the portal frame continues to rise. The vertical rod 559 drives the rotating plate 558 and the slider 554 to slide along the inner wall of the slide groove 553 at the reinforcing frame 3. The slider 554 drives the sliding shell 552 and the telescopic rod 551 to move. The hinge of the telescopic rod 551 and the sliding shell 552 is set outside the slide groove 553. It will not slide inside the slide groove 553 when the device is running or moving, preventing the telescopic rod 551 from getting stuck during the rotation of the sliding shell 552. The telescopic rod 551 pushes the sliding plate 545, side protection plate 544, and sliding plate 545 to rotate towards both sides of the tunnel. During operation, the sliding plate 545 drives the telescopic rod 551 to slide down a certain distance on the inner wall of the side protection plate 544. At this time, the telescopic rod 551 will automatically extend, for example using a hydraulic cylinder, to allow the sliding plate 545 to slide smoothly, ensuring that the tunnel sidewall remains supported during widening and preventing collapse or instability due to lack of support. The sliding plate 545 drives the connecting shell 547 and the roller 548 to move. The roller 548 will contact the tunnel sidewall. Through the self-rotation of the roller 548, the equipment will not stop due to excessive resistance or jamming, maintaining the smoothness of construction. When the slider 554 drives the sliding shell 552 to move, the square plate 555 will slide inside the sliding shell 552.

[0067] In the above structure, the pushing distance of the telescopic rod 551 is related to the rotation angle of the side protection plate 544. Because the side protection plate 544 rotates around the connector 543, and the purpose of the rotation is to make contact with the inner walls of the tunnel for support, the rotation angle of the side protection plate 544 will not be greater than 30 degrees, so that the telescopic rod 551 will not rotate too large an angle.

[0068] It should be noted that the reinforcing frame 3 located on the lower side of the hinge end of the telescopic rod 551 can also be bolted to a triangular block that limits the rotation angle of the telescopic rod 551 after it is tilted (different tilt angles of the triangular block can be selected according to the actual application scenario) to ensure that the telescopic rod 551 can be smoothly slid into the interior of the slide groove 553 when it is reset.

[0069] After the tunnel widening work is completed, when it is necessary to widen the next section of the tunnel, the lifting mechanism 51 is retracted and the device gradually falls back. At this time, the side guard plate 544 will reset under its own weight. During the rotation of the side guard plate 544, it will squeeze the side wall of the arc block 568, causing the arc block 568 to drive the horizontal bar 567 to move laterally. The horizontal bar 567 drives the rotating rod 566 to move. The rotating rod 566 drives the concave part 565, the lifting plate 564 and the lifting cylinder 563 to move vertically along the inner wall of the reinforcing frame 3. The lifting cylinder 563 drives the top rod 561 to rise. As the top rod 561 rises, it presses against the bottom of the elastic support rod 53, causing the elastic support rod 53 to move upwards along the inner wall of the connecting frame 2. The elastic support rod 53 then drives the first support frame 541 and the top protective plate 542 to rise, resetting the position between the top protective plate 542 and the traveling frame 1. This allows the equipment to be directly pushed into the next tunnel section, ensuring that it automatically returns to its initial state after the widening work is completed and is ready for subsequent tunnel construction. This design simplifies the operation process, eliminates the need for manual adjustments, and saves time and labor.

[0070] This solves the problem of repeated disassembly and assembly required in traditional support processes, greatly improving the efficiency of support work and reducing construction time. Furthermore, when widening the tunnel, the operation of the jacking mechanism 51 can continuously support the tunnel sides, ensuring that the tunnel sides remain stable throughout construction, thereby improving construction safety and avoiding work stoppages.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An enhanced protective tunnel widening vehicle protection device, comprising a gantry frame, with multiple movable parts (4) installed at the bottom of the gantry frame, and a widening protection mechanism (5) installed on the gantry frame; characterized in that, The extended protection mechanism (5) includes: Lifting mechanism (51), multiple lifting mechanisms (51) are installed at the bottom of the portal frame for lifting the portal frame; The support assembly (54) includes a top protective plate (542) and side protective plates (544). The top protective plate (542) is guided and slidably installed on the top of the portal frame by multiple elastic support rods (53). The two sets of side protective plates (544) are located on both sides of the portal frame respectively, and the side protective plates (544) are rotatably connected to the top protective plate (542). Multiple unfolding components (55) are installed along the axis of the portal frame. The upper end of the unfolding component (55) is connected to the top protective plate (542), and the left and right ends are connected to the side protective plates (544) on both sides respectively. When the lifting mechanism (51) lifts the gantry frame, the top protective plate (542) comes into contact with the tunnel roof wall, and the unfolding component (55) unfolds the side protective plates (544) on both sides under the reaction force of the top protective plate (542).

2. The enhanced protective tunnel widening vehicle protection device according to claim 1, characterized in that: The gantry frame includes a traveling frame (1), and there are two traveling frames (1). A connecting frame (2) is fixedly connected to the top of the two traveling frames (1), and a reinforcing frame (3) is fixedly connected to the bottom of the connecting frame (2). The two sides of the reinforcing frame (3) are fixedly connected to the two traveling frames (1). Multiple moving parts (4) and a lifting mechanism (51) are respectively installed at the bottom of the two traveling frames (1).

3. The enhanced protective tunnel widening vehicle protection device according to claim 2, characterized in that: The lifting mechanism (51) includes a hydraulic cylinder with its extension end facing outwards and a support block (52) installed on its extension end.

4. The enhanced protective tunnel widening vehicle protection device according to claim 1, characterized in that: The unfolding assembly (55) includes a telescopic rod (551), a sliding shell (552), a slider (554), a rotating plate (558), and a vertical rod (559). Multiple sliding grooves (553) are provided on both sides of the portal frame. A sliding shell (552) is slidably installed in the sliding groove (553). The outer end of the sliding shell (552) is hinged to one end of the telescopic rod (551), and a slider (554) is fixedly installed on the inner end. The slider (554) is slidably connected to the sliding groove (553). The other end of the telescopic rod (551) is hinged to the inner wall of the side guard plate (544). The top of the slider (554) is hinged to a rotating plate (558), and the top of the rotating plate (558) is hinged to a vertical rod (559). The vertical rod (559) is arranged longitudinally, and the top of the vertical rod (559) is connected and supported by the top protective plate (542). The vertical rod (559) is in sliding guide engagement with the portal frame; the two opposing rotating plates (558) have an included angle, which is greater than 40° and less than 150°.

5. The enhanced protective tunnel widening vehicle protection device according to claim 4, characterized in that: The inner wall of the sliding shell (552) is slidably connected to a square plate (555), and a steel pipe (556) is fixedly connected to one side of the square plate (555). The end of the steel pipe (556) is fixedly connected to one end of the inner wall of the slide groove (553); the steel pipe (556) slides through the sliding hole of the slider (554).

6. The enhanced protective tunnel widening vehicle protection device according to claim 4, characterized in that: The bottom of the top protective plate (542) is fixedly connected to a plurality of second support frames (5510), and the top of the vertical rod (559) is installed and fixed to the second support frames (5510).

7. An enhanced protective tunnel widening vehicle protection device according to any one of claims 1 to 6, characterized in that: Multiple auxiliary components (56) are also installed along the axis of the gantry frame. The auxiliary components (56) are connected to the elastic frame rod (53). The auxiliary components (56) are used to support the lower side of the side protective plate (544) when the side protective plate (544) is unfolded, and to provide auxiliary support for the top protective plate (542) when the support component (54) is reset.

8. The enhanced protective tunnel widening vehicle protection device according to claim 7, characterized in that: The auxiliary component (56) includes a top rod (561), a lifting plate (564), a concave part (565), a rotating rod (566), a crossbar (567), and an arc-shaped block (568). Each set of auxiliary components (56) includes two top rods (561). The top rods (561) are connected to the longitudinal sliding guide of the portal frame. The upper end of the top rods (561) is connected to the corresponding elastic frame rod (53). The lower ends of the two top rods (561) are fixed to the lifting plate (564). A concave part (565) is installed in the middle of the lifting plate (564). Two rotating rods (566) are hinged inside the concave part (565). A crossbar (567) is hinged to the end of the rotating rod (566). An arc block (568) is fixedly installed after the end of the crossbar (567) passes through the portal frame. The arc block (568) abuts against the side guard plate (544). The crossbar (567) is connected to the sliding guide of the portal frame. The two opposing rotating rods (566) have an included angle, which is greater than 40° and less than 150°.

9. The enhanced protective tunnel widening vehicle protection device according to claim 8, characterized in that: The lower end of the top rod (561) is fitted with a lifting cylinder (563), which is connected to the lifting plate (564). The lifting cylinder (563) is also connected to the longitudinal sliding guide of the gantry frame. A compression spring (562) is installed inside the lifting cylinder (563).

10. The enhanced protective tunnel widening vehicle protection device according to claim 1, characterized in that: The lower side of the top protective plate (542) is also fixedly connected to a plurality of first support frames (541), and the elastic frame rod (53) is fixedly connected to the corresponding first support frame (541).

11. The enhanced protective tunnel widening vehicle protection device according to claim 4, characterized in that: A sliding plate (545) is slidably connected to one side of the inner wall of the side protective plate (544), and a telescopic rod (551) is connected to the upper side of the sliding plate (545); a connecting shell (547) is fixedly connected to one side of the bottom end of the sliding plate (545), and multiple round rollers (548) are rotatably connected to both sides of the inner wall of the connecting shell (547).

12. The enhanced protective tunnel widening vehicle protection device according to claim 1, characterized in that: The top protective plate (542) is provided with protruding connectors (543) on the left and right sides respectively, and the side protective plate (544) is hinged to the connectors (543).

13. The enhanced protective tunnel widening vehicle protection device according to claim 1, characterized in that: The top protective plate (542) is provided with arc-shaped plates (549) at both ends of its axial direction.

14. The enhanced protective tunnel widening vehicle protection device according to claim 1, characterized in that: The elastic support rod (53) includes a rod body and a compression spring. The rod body is connected to the longitudinal sliding guide of the portal frame, and the compression spring is fitted on the upper section of the rod body located in the portal frame.

15. A method for enhanced protection of vehicles during tunnel widening, characterized in that: An enhanced protective tunnel widening vehicle protection device according to any one of claims 1 to 14 is adopted, and the protection method includes the following steps: S1. Move the protective device to a predetermined position inside the tunnel using the movable part (4); S2. Start the jacking mechanism (51) to lift the portal frame and the widening protection mechanism (5) so that the top protection plate (542) abuts against the top of the tunnel and supports the top of the tunnel. S3. The lifting mechanism (51) continues to lift. At this time, the top protective plate (542) is squeezed by the top of the tunnel. The top protective plate (542) cannot continue to rise, while the gantry frame rises further. The unfolding component (55) is under force and pushes the side protective plate (544) to rotate and unfold to one side of the tunnel wall to support the tunnel wall. S4. Lock the lifting mechanism (51) to maintain the height of the gantry frame.

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