Separating type operation rack for tunnel micro-step construction

Abstract

The invention discloses a separated operation rack for tunnel micro-step construction, and relates to the technical field of tunnel racks, the separated operation rack for tunnel micro-step construction comprises two groups of parallel ground longitudinal beams, each of the two ground longitudinal beams in the same group is provided with three stand columns, the stand columns are fastened and connected through a bottom cross beam, and the bottom cross beam is fixedly connected with the ground longitudinal beams. Upper longitudinal beams are installed on the tops of the stand columns, the two upper longitudinal beams are connected through upper cross beams, a first working platform is installed between the upper cross beams, a top frame is installed on the tops of the upper longitudinal beams and the tops of the upper cross beams, a second working platform is installed on the top of the top frame, and cantilever beams are installed on the stand columns on one side. The rack is symmetrically divided into two sets in the transverse direction of the tunnel, the size is small, the weight is light, the problem that the rack is large in size and weight is effectively solved, separated storage and step-crossing flexible installation and transportation can be achieved, and meanwhile three operation layers are arranged so that drilling, blasting and supporting operation of the whole tunnel face can be met.

Description

Technical Field

[0001] This invention relates to the field of tunnel support technology, specifically a split-type work platform for tunnel micro-step construction. Background Technology

[0002] Tunnel construction commonly employs the long bench method, with upper bench lengths ranging from 30 to 45 meters. The average monthly excavation progress is less than 50 meters, resulting in slow progress. The traditional long bench method uses an integral excavation platform. The portal frame structure requires space to be reserved at the bottom for construction machinery access, limiting the minimum platform height and affecting bench height control. This is especially problematic in single-track, small-section tunnels, where large-sized platforms are difficult to deploy and arrange. Furthermore, the large space reserved at the upper bench leads to a long bench length, resulting in the initial support closure being far from the tunnel face, leading to poor support effectiveness and compromising construction safety under adverse geological conditions.

[0003] Traditional support frames are bulky and heavy, making them inconvenient to transport, causing significant disruption to construction, and resulting in low efficiency. They cannot quickly close the initial support into a ring, integrate the upper and lower steps, or effectively improve the construction progress. Summary of the Invention

[0004] The purpose of this invention is to provide a detachable work platform for tunnel micro-step construction, in order to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The split-type work platform for tunnel micro-step construction includes two sets of parallel ground longitudinal beams. Three columns are vertically installed on each of the two ground longitudinal beams in the same set. The columns at both ends of the ground longitudinal beams are fastened together by bottom crossbeams for reinforcement. Upper longitudinal beams are installed on the tops of multiple columns on the same side. Two upper longitudinal beams are fastened together by three upper crossbeams. A top frame is installed on the tops of the multiple upper longitudinal beams and upper crossbeams. Cantilever beams are installed on multiple columns on the side away from the top frame, and diagonal bracing beams are installed at the bottom of the multiple cantilever beams. The bottom of the upper crossbeam is equipped with a support frame, and a first working platform is installed between each two adjacent cantilever beams. A second working platform is installed between each two adjacent upper crossbeams, and a third working platform is installed on the top of the top frame. The platform is symmetrically divided into two groups along the transverse direction of the tunnel. It is small in size and light in weight, effectively solving the problem of large platform size and weight. It can be stored separately and flexibly installed and transported across steps. When the working platform is used, it can be transported by excavator. At the same time, it is equipped with three working layers: the first working platform, the second working platform and the third working platform, to meet the drilling, blasting and support operations of the entire tunnel face.

[0006] As a preferred technical solution, the bottom of the first working platform, the second working platform and the third working platform are all equipped with reinforcing ribs.

[0007] As a preferred technical solution, adjustable protective components for preventing falls are installed on the first, second, and third working platforms.

[0008] As a preferred technical solution, the adjustable protective assembly includes a telescopic column, a cross plate, a slide rail, a rotating frame, a threaded rod, a slider, a first support rod, a second support rod, a rotating joint, and a top rod; Two telescopic columns are symmetrically installed on the first working platform. A horizontal plate is installed on the top of the two telescopic columns, and a slide rail is opened at the bottom of the horizontal plate. Two rotating frames are installed below the horizontal plate, and threaded rods are rotatably installed on each of the two rotating frames. The two threaded rods are connected by a coupling, and the two threaded rods have different directions of rotation. A slider is slidably installed on each of the two threaded rods. A first support rod and a second support rod are respectively hinged on the two sliders. A rotating joint is installed at the end of the second support rod. The first support rod and the rotating joint are connected by a pin. A top rod is installed at the other end of the rotating joint. The ends of the first support rod and the top rod are locked in the slide rail. When personnel go up to the first, second, and third working platforms to start work, the threaded rods can be rotated by starting the drive motor. The two sliders move towards each other under the rotation of the threaded rods, thereby providing driving force for the first and second support rods, making them close like scissors to raise the horizontal plate. Under the action of the first and second support rods, the horizontal plate is raised. At the same time, the rotating rods rise synchronously with the horizontal plate, thereby realizing the height adjustment of the guardrail.

[0009] As a preferred technical solution, a drive motor is installed at the end of each of the two threaded rods away from the coupling.

[0010] As a preferred technical solution, the two telescopic columns are hinged to the two ends of the horizontal plate at the bottom and to the two ends of the horizontal plate. The two horizontal rods on the same side are connected by multiple telescopic rods. The other end of the horizontal rod is equipped with a limit groove. The side wall of the limit groove is provided with a sliding opening. One end of the horizontal rod is stuck in the limit groove. When the work is completed, the horizontal plate is reset by the drive motor. The ends of the two horizontal rods on the same side are aligned with the sliding opening at the same time. Only then can it be pushed open and leave the working platform.

[0011] As a preferred technical solution, a reinforcement component for stabilizing the platform is also provided above the ground longitudinal beam.

[0012] As a preferred technical solution, the reinforcement component includes a mounting plate, a fixing block, a longitudinal slide rail, a transverse slide rail, a stop bar, a mounting groove, a pulley, a retaining ring, an upper stop block, a lower stop block, a slot, a rotating shaft, and a support foot; Two mounting plates are symmetrically installed above the longitudinal beam. Each mounting plate has a fixing block. The fixing block has a longitudinal slide rail and a transverse slide rail. An upper abutment block and a lower abutment block are slidably installed within the longitudinal slide rail. The opposing surfaces of the upper and lower abutment blocks are both inclined planes, and the two inclined planes are parallel to each other. A stop rod is slidably installed within the transverse slide rail. The stop rod has a mounting groove, within which a pulley is rotatably installed. A locking ring is installed on the pulley. The opposing surfaces of the upper and lower abutment blocks each have a slot for sliding the locking ring. The same side of the upper and lower abutment blocks closest to the mounting plate... A rotating shaft is rotatably installed between the columns, and a support foot is rotatably installed on the rotating shaft. One end of the support foot is hinged to the abutment block. A hydraulic push rod is installed on the top of the fixed block, and the output end of the hydraulic push rod is firmly connected to the upper abutment block. When the operator works on the platform, swaying is inevitable. At this time, the vibration level detected by the vibration detector controls the hydraulic push rod to press down on the upper abutment block, so that the abutment rod extends forward under the action of the pulley, thereby abutting the support foot, increasing the pressure between the support foot and the ground, and thus increasing the friction between the support foot and the ground, preventing the platform from displacing under the action of vibration and swaying.

[0013] As a preferred technical solution, the reinforcement component further includes a push rod, a first spring, a mass plate, and a second spring; A push rod is installed at the bottom of the lower abutment block. The bottom of the lower abutment block is connected to the bottom of the fixed block by a first spring. Four sets of second springs are installed at the bottom of the mounting plate. A mass plate is installed at the other end of the four sets of second springs. The push rod passes through the mounting plate and is fastened to the mass plate. When the abutment rod extends forward under the action of the pulley, the pulley presses down on the lower abutment block, thereby causing the push rod to drive the mass plate to sink, lowering the center of gravity of the platform, and thus stabilizing the platform.

[0014] As a preferred technical solution, a vibration detector is installed on the column near the hydraulic push rod, and the vibration detector is electrically connected to the hydraulic push rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This application effectively solves the problem of large size and weight of the platform by dividing it symmetrically into two groups along the transverse direction of the tunnel. It is small in size and light in weight, and can be stored separately and flexibly installed and transported across steps. When the work platform is used, it can be transported by excavator. At the same time, it is equipped with three working layers: the first working platform, the second working platform and the third working platform, to meet the drilling, blasting and support operations of the entire tunnel face.

[0016] 2. This application starts the drive motor to rotate the threaded rod, and the two sliders move towards each other under the rotation of the threaded rod, thereby providing driving force for the first support rod and the second support rod, so that they close like scissors and become higher. Under the action of the first support rod and the second support rod, the horizontal plate is lifted, and the rotating rod rises synchronously with the horizontal plate, thereby realizing the height adjustment of the guardrail.

[0017] 3. This application uses the vibration level detected by the vibration detector to control the hydraulic push rod to press down on the upper stop block, so that the stop rod extends forward under the action of the pulley, thereby pressing the stop rod against the support foot, increasing the pressure between the support foot and the ground, and thus increasing the friction between the support foot and the ground, preventing the platform from displacing under the action of vibration and shaking. When the stop rod extends forward under the action of the pulley, the pulley presses down on the lower stop block, thereby causing the push rod to drive the mass plate to sink, lowering the center of gravity of the platform, and thus stabilizing the platform. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second perspective structure of the present invention; Figure 3 This is a schematic diagram of the third-view structure of the present invention; Figure 4 This is a schematic diagram of the adjustable protective component structure of the present invention; Figure 5 This is a schematic diagram of the reinforcement component structure of the present invention; Figure 6 for Figure 4 Enlarged structural diagram at point A; Figure 7 for Figure 4 A magnified structural diagram at point B in the middle.

[0019] In the diagram: 2. Ground longitudinal beam; 3. Column; 4. Bottom crossbeam; 5. Upper longitudinal beam; 6. Upper crossbeam; 7. Lifting frame; 8. Top frame; 9. Cantilever beam; 10. Diagonal brace beam; 12. Reinforcing rib; 13. Adjustable protective assembly; 131. Telescopic column; 132. Horizontal plate; 1321. Slide rail; 133. Rotating frame; 134. Threaded rod; 135. Sliding block; 136. First support rod; 137. Second support rod; 138. Rotating joint; 139. Top rod; 140. Drive motor; 142. Limiting groove; 1421. Slide opening; 143. Rotating rod; 144. Telescopic rod; 15. First working platform; 16. Second working platform; 17. Third working platform.

[0020] 20. Reinforcing component; 21. Mounting plate; 22. Fixing block; 23. Longitudinal slide rail; 24. Transverse slide rail; 25. Abutment rod; 26. Mounting groove; 27. Pulley; 271. Engraving ring; 28. Upper abutment block; 29. ​​Lower abutment block; 210. Slot; 211. Push rod; 212. First spring; 213. Mass plate; 214. Second spring; 215. Rotating shaft; 216. Support foot; 217. Hydraulic push rod; 218. Vibration detector. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Figures 1-4 As shown, this invention provides a technical solution for a split-type work platform for tunnel micro-step construction. This split-type work platform includes two sets of parallel ground longitudinal beams 2. Three columns 3 are vertically installed on each of the two ground longitudinal beams 2 in the same set. The columns 3 at both ends of the ground longitudinal beams 2 are fastened together by bottom crossbeams 4 for reinforcement. Upper longitudinal beams 5 are installed on the top of multiple columns 3 on the same side. Two upper longitudinal beams 5 are fastened together by three upper crossbeams 6. A top frame 8 is installed on the top of the multiple upper longitudinal beams 5 and the upper crossbeams 6. Cantilever beams 9 are installed on multiple columns 3 on the side away from the top frame 8. Inclined beams are installed at the bottom of the multiple cantilever beams 9. The support beam 10 has a lifting frame 7 installed at the bottom of the upper crossbeam 6. A first working platform 15 is installed between each of the two adjacent cantilever beams 9, and a second working platform 16 is installed between each of the two adjacent upper crossbeams 6. A third working platform 17 is installed on the top of the top frame 8. The platform is symmetrically divided into two groups along the transverse direction of the tunnel. It is small in size and light in weight, which effectively solves the problem of large platform size and weight. It can be stored separately and flexibly installed and transported across steps. When the working platform is used, it can be transported by excavator. At the same time, it is equipped with three working layers: the first working platform 15, the second working platform 16 and the third working platform 17, to meet the drilling, blasting and support operations of the entire tunnel face.

[0023] The bottom of the first working platform 15, the second working platform 16, and the third working platform 17 are all equipped with reinforcing ribs 12.

[0024] The first working platform 15, the second working platform 16, and the third working platform 17 are all equipped with adjustable protective components 13 for fall prevention.

[0025] like Figures 1-4 , Figure 6 and Figure 7 As shown, the adjustable protective assembly 13 includes a telescopic column 131, a horizontal plate 132, a slide rail 1321, a rotating frame 133, a threaded rod 134, a slider 135, a first support rod 136, a second support rod 137, a rotating joint 138, and a top rod 139. Two telescopic columns 131 are symmetrically installed on the first working platform 15. A horizontal plate 132 is installed on the top of each column 131, and a slide rail 1321 is provided at the bottom of the horizontal plate 132. Two rotating frames 133 are installed below the horizontal plate 132, and threaded rods 134 are rotatably mounted on each of the two rotating frames 133. The two threaded rods 134 are connected by a coupling, and their rotation directions are different. A slider 135 is slidably mounted on each of the two threaded rods 134. A first support rod 136 and a second support rod 137 are hinged to each slider 135, respectively. A rotating joint 138 is installed at the end of the second support rod 137. The first support rod 136 and the rotating joint 138 are connected by a pin. A top rod 139 is installed at the other end of section 138. The ends of the first support rod 136 and the top rod 139 are both locked in the slide rail 1321. When personnel go up to the first working platform 15, the second working platform 16 and the third working platform 17 to start work, the threaded rod 134 can be rotated by starting the drive motor 140. The two sliders 135 move towards each other under the rotation of the threaded rod 134, thereby providing driving force for the first support rod 136 and the second support rod 137, so that they close like scissors and become higher. Under the action of the first support rod 136 and the second support rod 137, the horizontal plate 132 is lifted. At the same time, the rotating rod 143 rises synchronously with the horizontal plate 132, thereby realizing the height adjustment of the guardrail.

[0026] Two threaded rods 134 are respectively equipped with drive motors 140 at the ends away from the coupling.

[0027] Two telescopic columns 131 are hinged to both ends of the horizontal plate 132 near the bottom with rotating rods 143. The two rotating rods 143 on the same side are connected by multiple telescopic rods 144. The other end of the rotating rod 143 is equipped with a limiting groove 142. The side wall of the limiting groove 142 is provided with a sliding opening 1421. One end of the rotating rod 143 is stuck in the limiting groove 142. When the work is completed, the horizontal plate 132 is reset by the drive motor 140. The ends of the two rotating rods 143 on the same side are aligned with the sliding opening 1421 at the same time. Only then can it be pushed open and leave the working platform.

[0028] A reinforcement component 20 for stabilizing the platform is also installed above the ground longitudinal beam 2.

[0029] like Figures 1-5 As shown, the reinforcement component 20 includes a mounting plate 21, a fixing block 22, a longitudinal slide rail 23, a transverse slide rail 24, a stop bar 25, a mounting groove 26, a pulley 27, a retaining ring 271, an upper stop block 28, a lower stop block 29, a slot 210, a rotating shaft 215, and a support foot 216. Two mounting plates 21 are symmetrically installed above the longitudinal beam 2. Each mounting plate 21 has a fixing block 22. The fixing block 22 has a longitudinal slide rail 23 and a transverse slide rail 24. An upper abutment block 28 and a lower abutment block 29 are slidably installed within the longitudinal slide rail 23. The opposing surfaces of the upper abutment block 28 and the lower abutment block 29 are both inclined planes, and the two inclined planes are parallel to each other. A stop rod 25 is slidably installed within the transverse slide rail 24. The stop rod 25 has a mounting groove 26. A pulley 27 is rotatably installed within the mounting groove 26. A retaining ring 271 is installed on the pulley 27. The opposing surfaces of the upper abutment block 28 and the lower abutment block 29 each have a slot 210 for sliding the retaining ring 271. The columns 3 on the same side near the mounting plate 21 rotate... A rotating shaft 215 is installed, and a support foot 216 is rotatably mounted on the rotating shaft 215. One end of the support foot 216 is hinged to the abutment rod 25. A hydraulic push rod 217 is installed on the top of the fixing block 22, and the output end of the hydraulic push rod 217 is tightly connected to the upper abutment block 28. When the operator works on the platform, shaking is inevitable. At this time, the vibration level detected by the vibration detector 218 controls the hydraulic push rod 217 to press down the upper abutment block 28, so that the abutment rod 25 extends forward under the action of the pulley 27, thereby abutting the support foot 216, increasing the pressure between the support foot 216 and the ground, and thus increasing the friction between the support foot 216 and the ground, preventing the platform from displacing under the action of vibration and shaking.

[0030] The reinforcement assembly 20 also includes a push rod 211, a first spring 212, a mass plate 213, and a second spring 214; A push rod 211 is installed at the bottom of the lower abutment block 29. The bottom of the lower abutment block 29 is connected to the bottom of the fixed block 22 by a first spring 212. Four sets of second springs 214 are installed at the bottom of the mounting plate 21. A mass plate 213 is installed at the other end of the four sets of second springs 214. The push rod 211 passes through the mounting plate 21 and is fastened to the mass plate 213. When the abutment rod 25 extends forward under the action of the pulley 27, the pulley 27 presses down on the lower abutment block 29, thereby causing the push rod 211 to drive the mass plate 213 to sink, lowering the center of gravity of the platform, and thus stabilizing the platform.

[0031] A vibration detector 218 is installed on the column 3 near the hydraulic push rod 217, and the vibration detector 218 is electrically connected to the hydraulic push rod 217.

[0032] Working principle of the invention: The platform is symmetrically divided into two groups along the transverse direction of the tunnel. It is small in size and light in weight, which effectively solves the problem of large platform size and weight. It can be stored separately and flexibly installed and transported across steps. When the work platform is used, it can be transported by excavator. At the same time, it is equipped with three working layers: the first working platform 15, the second working platform 16 and the third working platform 17, to meet the drilling, blasting and support operations of the entire tunnel face.

[0033] When personnel ascend to the first working platform 15, the second working platform 16, and the third working platform 17 to begin preparations for work, the drive motor 140 can be activated to rotate the threaded rod 134. The two sliders 135 move towards each other as the threaded rod 134 rotates, thereby providing driving force for the first support rod 136 and the second support rod 137, causing them to close like scissors and rise. Under the action of the first support rod 136 and the second support rod 137, the horizontal plate 132 is lifted, and at the same time, the rotating rod 143 rises synchronously with the horizontal plate 132, thus realizing the height adjustment of the guardrail.

[0034] When the work is completed, the horizontal plate 132 is reset by the drive motor 140, and the ends of the two rotating rods 143 on the same side are simultaneously aligned with the sliding opening 1421. Only then can it be pushed open and removed from the work platform.

[0035] When workers are working on the platform, swaying is inevitable. At this time, the vibration level detected by the vibration detector 218 controls the hydraulic push rod 217 to press down the upper stop block 28, causing the stop rod 25 to extend forward under the action of the pulley 27. This causes the stop rod 25 to press against the support foot 216, increasing the pressure between the support foot 216 and the ground, thereby increasing the friction between the support foot 216 and the ground, preventing the platform from shifting under the action of vibration and swaying. When the stop rod 25 extends forward under the action of the pulley 27, the pulley 27 presses down the lower stop block 29, causing the push rod 211 to drive the mass plate 213 to sink, lowering the center of gravity of the platform, thereby stabilizing the platform.

[0036] 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 in all respects as exemplary and non-limiting, 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.

Claims

1. A detachable work platform for tunnel micro-step construction, characterized in that: The split-type work platform for tunnel micro-step construction includes two sets of parallel ground longitudinal beams (2). Three columns (3) are vertically installed on each of the two ground longitudinal beams (2) in the same set. The columns (3) at both ends of the ground longitudinal beams (2) are fastened together by bottom crossbeams (4) for reinforcement. The top of multiple columns (3) on the same side is equipped with upper longitudinal beams (5). Two upper longitudinal beams (5) are fastened together by three upper crossbeams (6). The top of multiple upper longitudinal beams (5) and upper crossbeams (6) are fastened together. The top frame (8) is installed on the top. Multiple columns (3) on the side away from the top frame (8) are equipped with cantilever beams (9). Diagonal bracing beams (10) are installed at the bottom of the multiple cantilever beams (9). A lifting frame (7) is installed at the bottom of the upper crossbeam (6). A first working platform (15) is installed between two adjacent cantilever beams (9). A second working platform (16) is installed between two adjacent upper crossbeams (6). A third working platform (17) is installed on the top of the top frame (8).

2. A detachable work platform for tunnel micro-step construction according to claim 1, characterized in that: The bottom of the first working platform (15), the second working platform (16) and the third working platform (17) are all equipped with reinforcing ribs (12).

3. A detachable work platform for tunnel micro-step construction according to claim 1, characterized in that: The first working platform (15), the second working platform (16) and the third working platform (17) are all equipped with adjustable protective components (13) for preventing falls.

4. A detachable work platform for tunnel micro-step construction according to claim 3, characterized in that: The adjustable protective assembly (13) includes a telescopic column (131), a horizontal plate (132), a slide rail (1321), a rotating frame (133), a threaded rod (134), a slider (135), a first support rod (136), a second support rod (137), a rotating joint (138), and a top rod (139). Two telescopic columns (131) are symmetrically installed on the first working platform (15). A horizontal plate (132) is installed on the top of the two telescopic columns (131). A slide rail (1321) is opened at the bottom of the horizontal plate (132). Two rotating frames (133) are installed below the horizontal plate (132). A threaded rod (134) is rotatably installed on each of the two rotating frames (133). The two threaded rods (134) are connected by a coupling, and the two threaded rods (134) have different rotation directions. A slider (135) is slidably mounted on each threaded rod (134). A first support rod (136) and a second support rod (137) are respectively hinged on the two sliders (135). A rotating joint (138) is installed at the end of the second support rod (137). The first support rod (136) and the rotating joint (138) are connected by a pin. A top rod (139) is installed at the other end of the rotating joint (138). The ends of the first support rod (136) and the top rod (139) are both locked in the slide rail (1321).

5. A detachable work platform for tunnel micro-step construction according to claim 4, characterized in that: A drive motor (140) is installed at the end of each of the two threaded rods (134) away from the coupling.

6. A detachable work platform for tunnel micro-step construction according to claim 5, characterized in that: Two telescopic columns (131) are hinged to both ends of the horizontal plate (132) at their bottom ends with rotating rods (143). The two rotating rods (143) on the same side are connected by multiple telescopic rods (144). The other end of the rotating rod (143) is equipped with a limiting groove (142). The side wall of the limiting groove (142) is provided with a sliding opening (1421). One end of the rotating rod (143) is stuck in the limiting groove (142).

7. A detachable work platform for tunnel micro-step construction according to claim 6, characterized in that: A reinforcement component (20) for stabilizing the platform is also provided above the ground longitudinal beam (2).

8. A detachable work platform for tunnel micro-step construction according to claim 7, characterized in that: The reinforcement component (20) includes a mounting plate (21), a fixing block (22), a longitudinal slide rail (23), a transverse slide rail (24), a stop bar (25), a mounting groove (26), a pulley (27), a retaining ring (271), an upper stop block (28), a lower stop block (29), a slot (210), a rotating shaft (215), and a support foot (216). Two mounting plates (21) are symmetrically installed above the longitudinal beam (2). Each mounting plate (21) has a fixing block (22). The fixing block (22) has a longitudinal slide rail (23) and a transverse slide rail (24). An upper abutment block (28) and a lower abutment block (29) are slidably installed in the longitudinal slide rail (23). The opposing surfaces of the upper abutment block (28) and the lower abutment block (29) are both inclined planes and the two inclined planes are parallel to each other. A stop rod (25) is slidably installed in the transverse slide rail (24). A mounting groove (26) is opened on the stop rod (25). The mounting groove (26) is rotatably installed. There is a pulley (27), on which a retaining ring (271) is installed. On the opposite surfaces of the upper abutment block (28) and the lower abutment block (29), there are slots (210) for the retaining ring (271) to slide. A rotating shaft (215) is rotatably installed between the same side columns (3) near the mounting plate (21). A support foot (216) is rotatably installed on the rotating shaft (215). One end of the support foot (216) is hinged to the abutment rod (25). A hydraulic push rod (217) is installed on the top of the fixing block (22), and the output end of the hydraulic push rod (217) is fastened to the upper abutment block (28).

9. A detachable work platform for tunnel micro-step construction according to claim 8, characterized in that: The reinforcement assembly (20) also includes a push rod (211), a first spring (212), a mass plate (213), and a second spring (214); The bottom of the lower abutment block (29) is equipped with a push rod (211). The bottom of the lower abutment block (29) is connected to the bottom of the fixed block (22) by a first spring (212). The bottom of the mounting plate (21) is equipped with four sets of second springs (214). The other end of the four sets of second springs (214) is equipped with a mass plate (213). The push rod (211) passes through the mounting plate (21) and is fastened to the mass plate (213).

10. A detachable work platform for tunnel micro-step construction according to claim 9, characterized in that: A vibration detector (218) is installed on the column (3) near the hydraulic push rod (217), and the vibration detector (218) is electrically connected to the hydraulic push rod (217).

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