A tunnel construction special scaffold and a using method thereof

Abstract

The application provides a tunnel construction special scaffold and a use method thereof, and belongs to the technical field of tunnel construction special scaffolds. The structure of the tunnel construction special scaffold comprises a movable base, a first rotator is vertically arranged on the movable base, a swing frame group is horizontally arranged on the top surface of the first rotator, a self-adapting fence group is hingedly connected to the right end of the swing frame group, and a counterweight is sleeved on the left end of the swing frame group. Through the above-mentioned structure, the fence piece can be horizontally and stably moved from right to left along the arc surface track of the tunnel arc top, and the staff can stand in the fence piece to perform the overall construction of the tunnel arc top.

Description

Technical Field

[0001] This invention relates to a special scaffold for tunnel construction and its usage method, belonging to the technical field of special scaffold for tunnel construction. Background Technology

[0002] The tunnel ceiling is rounded, and scaffolding is required for construction of the rounded ceiling.

[0003] Existing scaffolding only has vertical lifting function. When constructing on the arc-shaped ceiling inside the tunnel, due to the inconsistent height of the arc-shaped ceiling, the scaffolding needs to be readjusted every time it is moved laterally, which is very troublesome. In order to address the above shortcomings, this invention proposes a special scaffolding for tunnel construction and its usage method. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a special scaffold for tunnel construction and its usage method to solve the existing problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a special scaffold for tunnel construction, the structure of which includes a movable base, a first rotator is vertically arranged on the movable base, and a swing frame assembly is horizontally arranged on the top surface of the first rotator. An adaptive guardrail assembly is hinged to the right end of the swing frame assembly, and a counterweight block is sleeved on the left end of the swing frame assembly. The swing frame assembly includes a horizontal platform, and a telescopic arm seat is provided on the left side of the top surface of the horizontal platform. A telescopic arm component is hinged on the telescopic arm seat. A second rotator is connected to the hinge of the telescopic arm component. A support arm assembly is connected between the left side of the bottom surface of the telescopic arm component and the right end of the top surface of the horizontal platform. The support arm assembly includes a pressure slide assembly, on which the support arm body is hinged, and at the left end of the support arm body is a first movable seat for fixing on the left side of the bottom surface of the telescopic arm component. The pressing slide assembly includes a slide member, and a second movable seat is provided on the top surface of the slide member, and a pressing telescopic member is laterally movably sleeved in the groove on the bottom surface of the slide member; The adaptive railing assembly includes a railing frame, and a railing component is hinged to the right end of the railing frame. A horizontal sensor is horizontally aligned on the front side of the railing component. Multiple infrared sensors are horizontally and vertically arranged on the right side of the railing component. Two electromagnetic sliding blocks are arranged on the front and rear sides of the slot at the right end of the railing frame. The two electromagnetic sliding blocks are movably connected and electromagnetically fixed to the front and rear sides of the left end of the railing component. A third rotator is driven to the front of the railing component.

[0006] A further improvement is that a counterweight slot is provided on the left side of the top surface of the cross platform, and a slide block pressing groove is provided on the right side of the top surface of the cross platform for pressing against the movable sleeve of the slide block assembly. A locking slider is provided on the right side of the slide block pressing groove. The upper ends of the left and right walls of the sliding block pressing groove are provided with multiple anti-detachment grooves, and the lower ends of the left and right walls of the sliding block pressing groove are provided with multiple pressing grooves, and each pressing groove is provided with a first pressing tooth.

[0007] A further improvement is that the slide body includes a slide body, and multiple anti-detachment protrusions are provided on the left and right sides of the slide body. The bottom surface of the slide body is provided with a pressing member movable groove, and multiple pressing ports are provided through the left and right groove walls of the pressing member movable groove.

[0008] A further improvement is that the pressure-reducing telescopic component includes a bidirectional telescopic device, and two pressure-reducing sliders are arranged laterally on the left and right sides of the bidirectional telescopic device. The pressure-reducing sliders are movably sleeved in the pressure-reducing opening, and the outer side of the pressure-reducing sliders is provided with a second pressure-reducing tooth that movably engages with the first pressure-reducing tooth.

[0009] A further improvement is that a movable groove for the rail frame is provided on the left side of the rail frame, and multiple rail frame sleeve openings are provided through the front side of the left and right groove walls of the movable groove, and multiple electromagnetic slide block sleeve openings are provided through the rear side of the left and right groove walls of the movable groove.

[0010] A further improvement is that the railing frame includes a railing frame body, and multiple rotating shafts for fitting into the railing frame openings are provided in the middle of the front and rear sides of the railing frame body. In addition, two positioning slide rods for moving and electromagnetically connecting and fixing with the electromagnetic slide block assembly are also provided on the front and rear sides of the railing frame body. Each positioning slide rod is semi-circular. One of the two rotating shafts is connected to the third rotator for transmission.

[0011] A further improvement is that each of the electromagnetic slide blocks includes a bottom slide block, a top slide block is fitted onto the right side of the bottom slide block, and an electromagnetic chuck is fitted into the groove on the left side of the bottom slide block. The bottom slide has an inner semi-circular arc groove on its left side, and an electromagnetic chuck sleeve is provided through the middle of the left groove wall of the inner semi-circular arc groove. The top slide has an outer semi-circular arc groove on its right side. The diameter of the inner semi-circular arc groove and the outer semi-circular arc groove after fitting together is adapted to the cross section of the positioning slide rod. The right side of the electromagnetic chuck is provided with an arc-shaped magnetic suction surface for magnetic attraction against the surface of the positioning slide rod.

[0012] A further improvement is that the movable base, telescopic arm, first rotator, second rotator, and third rotator are all existing technologies, and their structures will not be described in detail here.

[0013] Furthermore, this invention also provides a method for using the aforementioned special scaffolding for tunnel construction, the method of which is as follows: First, move the equipment to the inside of the tunnel and place it horizontally. Then, move the base to the middle of the tunnel width. Then, extend the telescopic arm to the right to move the adaptive guardrail group to the right side of the tunnel. The infrared sensor will simultaneously perform anti-collision sensing of the adaptive guardrail group. Then, the staff can use the auxiliary frame to enter the adaptive guardrail group to carry out construction on the tunnel's curved top. When the adaptive guardrail group needs to move from right to left along the arc surface of the tunnel's arc top, it is adjusted by the swing frame group. First, the pressing and engaging of the sliding block group with the sliding block pressing groove is canceled. Then, the second rotator drives the telescopic arm to swing in an arc from 0 to 90 degrees on the telescopic arm seat, with each swing angle being 5 to 10 degrees. During this process, the pressing and engaging sliding block group will slide to the left in the sliding block pressing groove. Then, the pressing and engaging sliding block group will re-engage with the sliding block pressing groove, so that the support arm group will automatically unfold to reinforce the positioning of the telescopic arm after the swing angle. Additionally, when the telescopic arm changes its tilt angle, it will be detected by the horizontal sensor, and the synchronous adaptive fence assembly will make horizontal adaptive adjustments. First, the electromagnetic chuck cancels the electromagnetic connection of the positioning slide rod, and then the third rotator drives the fence assembly to swing horizontally. During this process, the positioning slide rod will slide within the diameter formed by the inner semi-circular arc groove and the outer semi-circular arc groove. Then, the arc-shaped magnetic suction surface on the electromagnetic chuck will re-magnetically attract and fix the surface of the positioning slide rod, thereby enhancing the horizontal stability of the fence assembly. In addition, when the telescopic boom is in a vertical state, the second rotator drives the swing frame group and the adaptive guardrail group to rotate 180°. Then, the swing frame group can be adjusted to swing to the left from 90° to 0°, and the adaptive guardrail group can be adjusted horizontally in sync. This allows the adaptive guardrail group to move from the right side of the tunnel to the left side of the tunnel according to the arc surface of the tunnel's arc top during construction.

[0014] The beneficial effects of this invention are: This invention provides a special scaffold for tunnel construction and its usage method. Through the structural combination design of a movable base, a first rotator, a swing frame group, an adaptive guardrail group, and a counterweight, a special scaffold for tunnel construction is constructed. The main function of the first rotator is to drive the swing frame group and the adaptive guardrail group to perform a 180° rotation and side-changing operation.

[0015] The swing frame assembly, consisting of a horizontal platform, telescopic arm seat, telescopic arm component, second rotator, and support arm group, has the function of swinging and moving at 90° according to the arc surface of the tunnel's arc top. The telescopic arm component also has the function of assisting the adaptive guardrail assembly to perform anti-collision adaptive telescopic extension. Furthermore, the support arm group assists the telescopic arm component in adaptively unfolding after swinging at the desired angle and re-engaging with the horizontal platform for positioning and support, preventing the second rotator from becoming uncontrollable due to excessive pressure.

[0016] The adaptive guardrail assembly, consisting of a guardrail frame, guardrail components, a level sensor, an infrared sensor, and an electromagnetic sliding block, can adaptively adjust its level when the telescopic arm changes its tilt angle. This ensures that the guardrail components remain level regardless of the telescopic arm's swing angle, preventing workers inside the guardrail from losing their footing. The electromagnetic sliding block reinforces and positions the guardrail components horizontally, maintaining a stable level and preventing tilting risks caused by uneven pressure on the sides of the guardrail when workers are standing on it.

[0017] Through the coordinated operation of the above-mentioned structures, the railing frame can move horizontally and stably from right to left along the arc-shaped surface trajectory of the tunnel's arched top, making it convenient for workers to stand inside the railing frame to carry out the overall construction of the tunnel's arched top. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a special scaffolding structure for tunnel construction according to the present invention; Figure 2 This is a schematic diagram of the crossbeam structure of the present invention; Figure 3 This is a right view of the slide block pressing groove of the present invention; Figure 4 This is a schematic diagram of the support arm assembly structure of the present invention; Figure 5 This is a right view of the pressure slide assembly of the present invention; Figure 6 This is a schematic diagram of the adaptive frame group structure of the present invention; Figure 7 This is a schematic diagram of the top surface structure of the frame of the present invention; Figure 8 This is a schematic diagram of the frame structure of the present invention; Figure 9 This is a schematic diagram of the top surface structure of the electromagnetic slide block assembly of the present invention; Figure 10 This is a schematic diagram of the electromagnetic chuck structure of the present invention; Figure 11 This is a rendering of the slide block pressure groove and the pressure slide block assembly of the present invention. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-11 This invention provides a special scaffold for tunnel construction and its usage method: Its structure includes a movable base 1, on which a first rotator 2 is vertically mounted, and a swing frame assembly 3 is horizontally mounted on the top surface of the first rotator 2. An adaptive guardrail assembly 4 is hinged to the right end of the swing frame assembly 3, and a counterweight 5 is fitted onto the left end of the swing frame assembly 3. The swing frame assembly 3 includes a horizontal platform 31, and a telescopic arm seat 32 is mounted on the left side of the top surface of the horizontal platform 31. A telescopic arm component 33 is hinged to the telescopic arm seat 32, and a second rotator 34 is connected to the hinge of the telescopic arm component 33. A support arm assembly 35 is connected between the left side of the bottom surface of the telescopic arm component 33 and the right end of the top surface of the horizontal platform 31. The support arm assembly 35 includes a pressure slide assembly 351, on which a support arm body 352 is hinged. The left end is hinged to a first movable seat 353 for fixing on the left side of the bottom surface of the telescopic arm 33. The pressing slide assembly 351 includes a slide 354, and a second movable seat 355 is provided on the top surface of the slide 354. A pressing telescopic member 356 is movably sleeved in the groove on the bottom surface of the slide 354. The adaptive guardrail assembly 4 includes a guardrail frame 41, and a guardrail member 42 is hinged to the right end of the guardrail frame 41. A horizontal sensor 43 is horizontally aligned on the front side of the guardrail member 42. Multiple infrared sensors 44 are horizontally and vertically arranged on the right side of the guardrail member 42. Two electromagnetic slide assemblies 45 are provided on the front and rear sides of the groove on the right end of the guardrail frame 41. The two electromagnetic slide assemblies 45 are movably sleeved and electromagnetically connected to the front and rear sides of the left end of the guardrail member 42. A third rotator 46 is drivenly connected to the front side of the guardrail member 42.

[0021] The top left side of the horizontal platform 31 is provided with a counterweight slot 311, and the right side of the top surface of the horizontal platform 31 is provided with a slide block pressing groove 312 for pressing the movable sleeve of the slide block assembly 351. A locking slider 313 is provided on the right side of the slide block pressing groove 312. Multiple anti-detachment grooves 3121 are provided on the upper end of the left and right groove walls of the slide block pressing groove 312, and multiple pressing grooves 3122 are provided on the lower end of the left and right groove walls of the slide block pressing groove 312. Each pressing groove 3122 is provided with a first pressing tooth 3123.

[0022] The slide body 354 includes a slide body 3541, and multiple anti-detachment protrusions 3542 are provided on the left and right sides of the slide body 3541. The bottom surface of the slide body 3541 is provided with a pressing member movable groove 3543, and multiple pressing ports 3544 are provided through the left and right groove walls of the pressing member movable groove 3543.

[0023] The pressure-relief telescopic component 356 includes a bidirectional telescopic component 3561, and two pressure-relief sliders 3562 are arranged laterally on the left and right sides of the bidirectional telescopic component 3561. The pressure-relief sliders 3562 are movably sleeved in the pressure-relief opening 3544. The outer side of the pressure-relief sliders 3562 is provided with a second pressure-relief tooth 3563 that movably engages with the first pressure-relief tooth 3123.

[0024] The left side of the rail frame 41 is provided with a rail frame movable groove 411, and the front side of the left and right groove walls of the rail frame movable groove 411 is provided with multiple rail frame sleeve openings 412, and the rear side of the left and right groove walls of the rail frame movable groove 411 is provided with multiple electromagnetic slide block sleeve openings 413.

[0025] The railing frame 42 includes a railing frame body 421. The front and rear sides of the railing frame body 421 are provided with a plurality of rotating shafts 422 for fitting into the railing frame sleeve 412. The front and rear sides of the railing frame body 421 are also provided with two positioning slide rods 423 for being movably connected and fixed to the electromagnetic slide block assembly 45. Each positioning slide rod 423 is semi-circular. One of the two rotating shafts 422 is connected to the third rotator 46 for transmission.

[0026] Each of the electromagnetic slide blocks 45 includes a bottom slide block 451, and a top slide block 452 is fitted onto the right side of the bottom slide block 451. An electromagnetic chuck 453 is fitted into the left groove of the bottom slide block 451. An inner semi-circular arc groove 4511 is formed on the left side of the bottom slide block 451, and an electromagnetic chuck opening 4512 is formed through the middle of the left groove wall of the inner semi-circular arc groove 4511. An outer semi-circular arc groove 4521 is formed on the right side of the top slide block 452. The diameter of the inner semi-circular arc groove 4511 and the outer semi-circular arc groove 4521 after fitting together is adapted to the cross section of the positioning slide rod 423. An arc-shaped magnetic suction surface 4531 for magnetically attracting the positioning slide rod 423 is formed on the right side of the electromagnetic chuck 453. Working principle: Including the following usage methods: First, move the equipment to the inside of the tunnel and place it horizontally. Then, move the base 1 to the middle of the tunnel width. Then, extend the telescopic arm 33 to the right to move the adaptive guardrail group 4 to the right side of the tunnel. The infrared sensor 44 simultaneously performs anti-collision sensing of the adaptive guardrail group 4. Then, the staff can use the auxiliary frame to enter the adaptive guardrail group 4 to carry out construction on the tunnel's arc top. It should be noted that at this time, the telescopic arm 33 is in a horizontal state, and the adaptive guardrail group 4 is also in a horizontal state. When the telescopic arm 33 extends to the right, the horizontal infrared sensor 44 in each infrared sensor 44 performs anti-collision sensing.

[0027] When the adaptive rail frame group 4 needs to move from right to left along the arc surface of the tunnel's arc top, it is adjusted by the swing frame group 3. First, the pressing engagement of the sliding block group 351 with the sliding block pressing groove 312 is canceled. Then, the second rotator 34 drives the telescopic arm 33 to perform arc swing adjustment of 0-90° on the telescopic arm seat 32, and the swing angle is 5-10° each time. During this process, the pressing sliding block group 351 will slide to the left in the sliding block pressing groove 312. Then, the pressing sliding block group 351 will re-engage with the sliding block pressing groove 312, so that the support arm group 35 will be automatically extended to reinforce the positioning of the telescopic arm 33 after the swing angle. It should be noted that the engagement of the pressing slide block 351 with the pressing groove 312 is canceled by the bidirectional retraction of the bidirectional telescopic device 3561, which simultaneously pulls the two pressing slide blocks 3562 to slide in the pressing port 3544 toward the bidirectional telescopic device 3561, so that the first pressing tooth 3123 and the second pressing tooth 3563 disengage. On the contrary, the bidirectional telescopic device 3561 extends, and the first pressing tooth 3123 and the second pressing tooth 3563 engage to position the pressing slide block 351, preventing the telescopic arm 33 from being pressured and causing the support arm 35 to slide in the unfolded state. In addition, when the telescopic boom 33 swings at an angle, the infrared sensor of each infrared sensor 44 is closest to the distance between its infrared sensor and the inner wall of the tunnel. This allows the telescopic boom 33 to adapt to the infrared sensor 44 while swinging at an angle, preventing the adaptive guardrail group 4 from colliding when it is moved by the telescopic boom 33 to walk on the curved surface. This is because the curved top of the tunnel is not a perfect circle.

[0028] Additionally, when the telescopic arm 33 has a change in tilt angle, it will be sensed by the horizontal sensor 43, and the synchronous adaptive fence assembly 4 will make horizontal adaptive adjustment. First, the electromagnetic chuck 453 cancels the electromagnetic connection of the positioning slide rod 423, and then the third rotator 46 drives the fence assembly 42 to swing horizontally. During this process, the positioning slide rod 423 will slide within the diameter formed by the inner semi-circular arc groove 4511 and the outer semi-circular arc groove 4521. Then, the arc-shaped magnetic suction surface 4531 on the electromagnetic chuck 453 will re-magnetically attract and fix the surface of the positioning slide rod 423, thereby enhancing the horizontal stability of the fence assembly 42. It should be noted that the surfaces of the arc-shaped magnetic suction surface 4531 and the positioning slide rod 423 always maintain contact between the two surfaces, so that the electromagnetic connection between the electromagnetic suction cup 453 and the positioning slide rod 423 can be achieved or the electromagnetic connection can be broken simply by operating the energization or de-energization of the electromagnetic suction cup 453. The swing of the railing frame 42 can be directly operated by rotating the third rotator 46. However, the self-locking function of the brake in the third rotator 46 is prone to cause excessive pressure on the brake in the third rotator 46 when the staff stands on the side of the railing frame body 421, resulting in the problem of not being able to stop. Therefore, the cooperation between the electromagnetic slide block 45 and the positioning slide rod 423 to assist in electromagnetic connection positioning and reinforcement is very important.

[0029] In addition, when the telescopic boom 33 is in a 90° vertical state, the second rotator 34 drives the swing frame group 3 and the adaptive guardrail group 4 to rotate 180°. Then the swing frame group 3 can be adjusted to swing to the left from 90° to 0°, and the adaptive guardrail group 4 can be adjusted horizontally in sync. This allows the adaptive guardrail group 4 to move from the right side of the tunnel to the left side of the tunnel according to the arc surface of the tunnel's arc top during construction. It should be noted that when the telescopic arm 33 swings to a vertical position, the railing frame 42 on the adaptive railing frame group 4 also adaptively adjusts to a horizontal position. Thus, when the second rotator 34 drives the swing frame group 3 and the adaptive railing frame group 4 to rotate 180° to change sides, the railing frame 42 will only rotate in its original position. At this time, it is safer for the staff to stand in the center area of ​​the railing frame 42.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. 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. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] 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. A special scaffold for tunnel construction, the structure of which includes a movable base (1), a first rotator (2) is vertically arranged on the movable base (1), a swing frame group (3) is horizontally arranged on the top surface of the first rotator (2), an adaptive guardrail group (4) is hinged to the right end of the swing frame group (3), and a counterweight block (5) is sleeved on the left end of the swing frame group (3). The swing frame assembly (3) includes a horizontal platform (31), a telescopic arm seat (32) is provided on the left side of the top surface of the horizontal platform (31), a telescopic arm component (33) is hinged on the telescopic arm seat (32), a second rotator (34) is connected to the hinge of the telescopic arm component (33), and a support arm assembly (35) is connected between the left side of the bottom surface of the telescopic arm component (33) and the right end of the top surface of the horizontal platform (31). The support arm assembly (35) includes a pressure slide assembly (351), on which a support arm body (352) is hinged, and at the left end of the support arm body (352) is a first movable seat (353) for fixing on the left side of the bottom surface of the telescopic arm (33). The pressure slide assembly (351) includes a slide member (354), a second movable seat (355) is provided on the top surface of the slide member (354), and a pressure telescopic member (356) is laterally movably sleeved in the groove on the bottom surface of the slide member (354). The adaptive rail frame assembly (4) includes a rail frame (41), a rail frame member (42) is hinged to the right end of the rail frame (41), a horizontal sensor (43) is horizontally aligned on the front side of the rail frame member (42), a plurality of infrared sensors (44) are arranged in the horizontal and vertical directions on the right side of the rail frame member (42), two electromagnetic slide groups (45) are arranged in the front and rear sides of the slot at the right end of the rail frame (41), the two electromagnetic slide groups (45) are movably sleeved and electromagnetically connected and fixed to the front and rear sides of the left end of the rail frame member (42), and a third rotator (46) is drivenly connected to the front side of the rail frame member (42). The top left side of the horizontal platform (31) is provided with a counterweight sleeve groove (311), and the right side of the top surface of the horizontal platform (31) is provided with a slide block pressing groove (312) for pressing the movable sleeve of the slide block assembly (351). A sliding block (313) is provided on the right side of the slide block pressing groove (312). The upper ends of the left and right groove walls of the slide block pressing groove (312) are provided with multiple anti-detachment grooves (3121), and the lower ends of the left and right groove walls of the slide block pressing groove (312) are provided with multiple pressing grooves (3122). Each pressing groove (3122) is provided with a first pressing tooth (3123). The fence frame (42) includes a fence frame body (421). Multiple rotating shafts (422) for fitting into the fence frame sleeve (412) are provided in the middle of the front and rear sides of the fence frame body (421). Two positioning slide rods (423) for moving and connecting with the electromagnetic slide block (45) are also provided on the front and rear sides of the fence frame body (421). Each positioning slide rod (423) is semi-circular. One of the two rotating shafts (422) is connected to the third rotator (46) for transmission. Each of the electromagnetic slide blocks (45) includes a bottom slide block (451), a top slide block (452) fitted on the right side of the bottom slide block (451), and an electromagnetic chuck (453) fitted in the groove on the left side of the bottom slide block (451). The bottom slide (451) has an inner semi-circular arc groove (4511) on its left side, and an electromagnetic chuck sleeve (4512) is provided through the middle of the left groove wall of the inner semi-circular arc groove (4511). The top slide (452) has an outer semi-circular arc groove (4521) on its right side. The diameter of the inner semi-circular arc groove (4511) and the outer semi-circular arc groove (4521) after fitting together is adapted to the cross section of the positioning slide rod (423). The right side of the electromagnetic chuck (453) is provided with an arc-shaped magnetic suction surface (4531) for magnetically attracting the positioning slide rod (423) against the surface of the rod.

2. The special scaffolding for tunnel construction according to claim 1, characterized in that: The slide block (354) includes a slide block body (3541), and multiple anti-detachment protrusions (3542) are provided on the left and right sides of the slide block body (3541). A pressing member movable groove (3543) is opened on the bottom surface of the slide block body (3541), and multiple pressing ports (3544) are opened through the left and right groove walls of the pressing member movable groove (3543).

3. The special scaffolding for tunnel construction according to claim 2, characterized in that: The pressure-relief telescopic component (356) includes a bidirectional telescopic device (3561). Two pressure-relief sliders (3562) are arranged laterally on the left and right sides of the bidirectional telescopic device (3561). The pressure-relief sliders (3562) are movably sleeved in the pressure-relief opening (3544). The outer side of the pressure-relief sliders (3562) is provided with a second pressure-relief tooth (3563) that movably engages with the first pressure-relief tooth (3123).

4. The special scaffolding for tunnel construction according to claim 3, characterized in that: The left side of the rail frame (41) is provided with a rail frame movable groove (411), and multiple rail frame sleeve openings (412) are provided through the front side of the left and right groove walls of the rail frame movable groove (411), and multiple electromagnetic slide group sleeve openings (413) are provided through the rear side of the left and right groove walls of the rail frame movable groove (411).

5. A method for using a special scaffolding for tunnel construction as described in claim 4, characterized in that: The usage method is as follows: First, move the equipment to the tunnel and place it horizontally. Then move the base (1) to the middle of the tunnel width. Then extend the telescopic arm (33) to the right to move the adaptive guardrail group (4) to the right side of the tunnel. The infrared sensor (44) simultaneously performs anti-collision sensing of the adaptive guardrail group (4). Then the staff can use the auxiliary frame to enter the adaptive guardrail group (4) to carry out the construction of the tunnel arc top. When the adaptive frame group (4) moves from right to left along the arc surface of the tunnel's arc top, it is adjusted by the swing frame group (3). First, the pressing and biting engagement of the pressing and biting group (351) of the pressing and biting group (351) of the pressing and biting group (312) of the pressing and biting group ... In addition, when the telescopic arm (33) has a change in tilt angle, it will be sensed by the horizontal sensor (43), and the synchronous adaptive fence assembly (4) will make horizontal adaptive adjustment. First, the electromagnetic connection between the electromagnetic chuck (453) and the positioning slide rod (423) is eliminated. Then, the third rotator (46) drives the fence assembly (42) to swing horizontally. During this process, the positioning slide rod (423) will slide within the diameter formed by the inner semi-circular arc groove (4511) and the outer semi-circular arc groove (4521). Then, the arc magnetic suction surface (4531) on the electromagnetic chuck (453) will re-magnetically attract and fix the surface of the positioning slide rod (423) to enhance the horizontal stability of the fence assembly (42). In addition, when the telescopic boom (33) is in a 90° vertical state, the second rotator (34) drives the swing frame group (3) and the adaptive guardrail group (4) to rotate 180°. Then the swing frame group (3) can be adjusted to swing to the left from 90-0°. The adaptive guardrail group (4) performs synchronous horizontal adaptive adjustment, so that the adaptive guardrail group (4) can move from the right side of the tunnel to the left side of the tunnel according to the arc surface of the tunnel's arc top during construction.

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