Tunnel steel arch connecting device and connecting method

Abstract

The present application relates to the technical field of tunnel construction, and especially relates to a tunnel steel arch support connecting device and a connecting method, the connecting device comprising a support frame, three groups of mounting pieces being arranged at intervals, the support frame being connected to one group of mounting pieces through fixed heads fixed in the middle, the support frame being connected to one group of mounting pieces through sliding heads movably connected at two ends, the sliding heads driving the mounting pieces to move through a moving unit, positioning assemblies being arranged on both sides of the mounting pieces, the positioning assemblies comprising three positioning connecting blocks corresponding to the three groups of mounting pieces, the adjacent two positioning connecting blocks being connected in an extension mode, and steel arch segments being fixedly arranged between the positioning connecting blocks at both ends of the same mounting piece; a support assembly being movably arranged in the middle of the mounting piece, the support assembly comprising two symmetrically rotatably connected support pieces, the support pieces abutting against the bottom of the steel arch segment; the connecting method being applied to the connecting device, realizing the connection of the longitudinal row segments of the multiple steel arch supports, and being suitable for the design requirements of the steel arch supports in various tunnel constructions.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and in particular to a tunnel steel arch frame connection device and connection method. Background Technology

[0002] Tunnel steel arch frames are a commonly used rigid support structure in the initial support of tunnels to enhance the stability of the surrounding rock. In current installation processes, a single steel arch frame can be designed as multiple steel arch segments. These segments can be installed individually and then spliced ​​together at the designed location in the tunnel to form a single steel arch frame. Adjacent steel arch frames are then connected laterally by reinforcing bars. The overall construction requires segment-by-segment lifting, positioning, and welding, resulting in high repetition rates, low efficiency, high manual labor, and difficulty in ensuring installation accuracy. Existing technologies also utilize arch frame trolleys for steel arch frame construction. One or more robotic arms clamp longitudinally connected segments of the steel arch frame and install them to the designed location. Multiple longitudinally connected segments are then spliced ​​together circumferentially to form multiple steel arch frames, followed by bolting or welding. This significantly improves construction efficiency and reduces the labor intensity of construction workers.

[0003] The longitudinally connected steel arch frame consists of multiple parallel and spaced steel arch segments. Two adjacent steel arch segments are fixedly connected by steel bars. Using an arch frame trolley requires connecting corresponding steel arch segments in the longitudinally connected steel arch frame in the prefabrication yard. Moreover, a traffic engineering project may involve multiple tunnel projects, and the design requirements for the steel arch frame structure may be different in the multiple tunnel structures, resulting in different curvatures of the steel arch segments in the longitudinally connected steel arch frame and different design intervals between adjacent steel arch frames. Existing technology generally relies on construction personnel to perform connection operations using simple construction devices when connecting steel arch segments, which cannot adapt to the various steel arch frame connection requirements and has low connection efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a tunnel steel arch frame connection device and connection method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A tunnel steel arch frame connection device includes a support frame, mounting components, and a support assembly. Three sets of mounting components are spaced apart. Each support frame connects to one set of mounting components via a fixed head fixed in the center. Each support frame also connects to a set of mounting components via sliding heads movably connected at both ends. The sliding heads, through a moving unit, drive the mounting components to move. Two sliding heads, through a gear and rack structure, drive the mounting components to move in opposite directions. Positioning assemblies are installed on both sides of each mounting component. Each positioning assembly includes three positioning connecting blocks, each corresponding to one of the three sets of mounting components. Adjacent positioning connecting blocks are telescopically connected. A steel arch segment is fixedly positioned between the positioning connecting blocks at both ends of the same mounting component. A support assembly is movably positioned in the center of each mounting component. The support assembly includes an adjusting component slidably positioned in the center of the mounting component. Support components are rotatably connected to both ends of the adjusting component. A drive cylinder is rotatably connected between the side of the adjusting component and the support component. The upper part of the support component abuts against the bottom of the steel arch segment.

[0007] Preferably, the support frame further includes connecting rods; the support frame is symmetrically provided with connecting rods on both sides, and a fixed plate is fixedly provided in the middle between the two connecting rods. The fixed plate includes connecting plates vertically fixed on both sides of the bottom. The two ends of the connecting plate are respectively connected to the moving units. The two moving units located on the same side of the fixed plate drive the steel arch section to move towards or in opposite directions.

[0008] Preferably, the moving unit includes a slider, and fixed rods are respectively arranged parallel to each other on both sides of the fixed plate. A slide rail is fixedly provided at the bottom of the fixed rod, and the slider is slidably inserted into the slide rail.

[0009] Preferably, an adjusting rack is fixedly provided on both sides of the bottom of the fixed plate, and the adjusting rack is located between the connecting plate and the fixed rod; a through groove is horizontally opened on the connecting plate, and two moving units located at the same end of the fixed plate are connected by a mating shaft, which slides through the through groove.

[0010] Preferably, the moving unit further includes a moving component, a mating block is fixedly provided on the side of the bottom of the sliding component away from the fixed plate, and the other side is fixedly connected to the side of the moving component; the connecting rod has adjustment grooves at both ends, and the connecting rod vertically fixedly provided at the bottom of the sliding head passes through the adjustment groove and is fixedly connected to the mating block.

[0011] Preferably, one end of the moving part is rotatably provided with an adjusting gear, and the other end is rotatably provided with a moving wheel. The adjusting gear is meshed with the adjusting rack, and the mating shaft is coaxially engaged with the central shaft of the adjusting gear.

[0012] Preferably, the positioning component further includes a rotating cylinder and an adjusting cylinder. The upper two sides of the mounting part are rotatably connected to the rotating cylinder through openings, and the adjusting cylinder is rotatably installed at the end of the mounting part. The telescopic end of the adjusting cylinder is rotatably connected to the fixed end of the rotating cylinder.

[0013] Preferably, the mounting component has mounting ears at both ends of its bottom, and the mounting component is fixedly connected to the fixed head or the sliding head through the mounting ears. A connecting part is fixedly connected to the upper side of the middle part of the mounting component, and a lifting cylinder is vertically fixedly installed in the middle of the connecting part. The telescopic end of the lifting cylinder is fixedly connected to the adjusting component.

[0014] A method for connecting tunnel steel arch frames, applied to the aforementioned tunnel steel arch frame connecting device, includes the following steps:

[0015] S1: Based on the design spacing between two adjacent steel arch frames, adjust the rotation of the adjusting gear so that the adjusting gear drives the moving parts, mounting parts, support components and steel arch sections to move along the adjusting rack, thereby adjusting the distance between two adjacent mounting parts to adapt to the design spacing between two adjacent steel arch frames.

[0016] S2: Move the steel arch section to a suitable position above the corresponding installation component, adjust the extension end of the lifting cylinder to drive the support component closer to the bottom of the steel arch section, adjust the extension end of the drive cylinder to drive the support component to rotate until the upper part of the support component contacts the lower surface of the steel arch section.

[0017] S3: Adjust the extension end of the adjusting cylinder to drive the rotating cylinder in the positioning assembly to rotate until the end of the steel arch section contacts the corresponding positioning connecting block, and fix the end of the steel arch section to the positioning connecting block.

[0018] S4: Install the remaining steel arch segments onto the corresponding three sets of installation parts in sequence, and connect and fix adjacent steel arch segments with steel bars to complete the connection of the longitudinal row of steel arch frame segments.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention provides a tunnel steel arch frame connection device. A steel arch segment is installed on an mounting component. A set of mounting components is movably installed on both sides of a fixed set of mounting components. The distance between adjacent sets of mounting components can be adjusted to accommodate the design spacing of adjacent steel arch frames. Positioning components are installed on both sides of the mounting components. Each positioning component includes three positioning connecting blocks corresponding to the three sets of mounting components. The positioning connecting blocks are fixed to the steel arch segment, and their angle is adjusted by an adjusting cylinder to accommodate steel arch segments of different curvatures. An adjusting component is vertically connected to the middle of the mounting component. Supporting components are rotatably connected to both sides of the adjusting component via drive cylinders. These supporting components support the steel arch segment, enhancing stability during the connection process.

[0021] The present invention provides a method for connecting steel arch frames in tunnels, which is applied to a tunnel steel arch frame connection device to realize the connection of multiple steel arch frame longitudinally connected segments, and is suitable for the design requirements of steel arch frames in various tunnel constructions. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the connection structure of a tunnel steel arch frame connection device according to an embodiment of the present invention;

[0023] Figure 2 This is a side view structural diagram of the connection between the mounting component, support assembly, and steel arch section according to an embodiment of the present invention;

[0024] Figure 3 for Figure 1 Enlarged view of region A in the middle;

[0025] Figure 4 This is an exploded view of the support frame connection structure according to an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of region B in the middle;

[0027] Figure 6 This is an exploded structural diagram showing the connection between the mounting component and the positioning assembly in an embodiment of the present invention;

[0028] Figure 7 This is a horizontal cross-sectional view of the support component according to an embodiment of the present invention;

[0029] Figure 8 This is a side-view cross-sectional view of the support component according to an embodiment of the present invention.

[0030] Reference numerals: 1. Support frame; 11. Connecting rod; 111. Adjusting groove; 12. Fixed head; 13. Sliding head; 14. Crossbar; 15. Fixed plate; 151. Connecting plate; 152. Through groove; 153. Mating shaft; 16. Adjusting rack; 17. Adjusting gear; 18. Fixed rod; 181. Slide rail; 19. Moving part; 192. Moving wheel; 110. Sliding part; 1101. Mating block; 2. Mounting part; 21. Mounting ear; 22. Connecting part; 221. Connecting groove; 23. Rotary hole; 3. Support assembly; 31. Support component; 311. Matching rod; 312. Abutment plate; 313. Telescopic rod; 314. Telescopic box; 32. Drive cylinder; 33. Adjusting component; 34. Lifting cylinder; 4. Steel arch section; 5. Positioning assembly; 51. Rotating cylinder; 52. Adjusting cylinder; 53. Connecting block; 54. Mounting rod; 55. Sleeve. Detailed Implementation

[0031] 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.

[0032] In the following description of the invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the 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. The term "connection" simply indicates a connection between devices and has no special meaning.

[0033] Furthermore, the technical fields and installation methods involved in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] For specific implementation examples, please refer to: Figures 1-8 A tunnel steel arch frame connection device includes a support frame 1, mounting parts 2, and a support assembly 3. Three sets of mounting parts 2 are spaced apart. The support frame 1 connects to one set of mounting parts 2 via a fixed head 12 fixedly installed in the middle. The support frame 1 connects to one set of mounting parts 2 via sliding heads 13 movably connected at both ends. The sliding heads 13, through a moving unit, drive the corresponding mounting parts 2 to move. Two sliding heads 13 drive the mounting parts 2 to move in opposite directions via a gear and rack structure. Positioning assemblies 5 are provided on both sides of the mounting parts 2. Each positioning assembly 5 includes three positioning connecting blocks 53, which correspond one-to-one with the three sets of mounting parts 2. Adjacent positioning connecting blocks 53 are telescopically connected. A steel arch section 4 is fixedly installed between two positioning connecting blocks 53 located at both ends of the same mounting part 2. The support assembly 3 includes an adjusting part 33 slidably disposed in the middle of the mounting part 2. Supporting parts 31 are rotatably connected to both ends of the adjusting part 33. A drive cylinder 32 is rotatably connected between the side of the adjusting part 33 and the supporting part 31. The upper part of the supporting part 31 abuts against the bottom of the steel arch section 4.

[0035] This embodiment takes a longitudinally connected segment of a steel arch frame that, after being spliced, consists of three steel arch frames as an example. The longitudinally connected segment of the steel arch frame includes three steel arch segments 4. Two adjacent steel arch segments 4 can be spliced ​​and connected in the transverse direction. Each steel arch segment 4 is provided with connecting holes for reinforcing bars, which are then fixed by passing through the reinforcing bars. The interval between two adjacent steel arch frames is designed according to actual usage requirements. The number of circumferentially designed segments for each steel arch frame is also designed according to actual usage requirements. The curvature of each steel arch segment 4 varies depending on the number of circumferentially designed segments for each steel arch frame.

[0036] The support frame 1 further includes connecting rods 11, fixing plates 15, and fixing rods 18. Connecting rods 11 are symmetrically arranged on both sides of the support frame 1. Fixing heads 12 are fixedly disposed in the middle of the connecting rods 11, and sliding heads 13 are disposed at the ends of the connecting rods 11. A crossbar 14 is fixedly connected between the two connecting rods 11. The crossbar 14 is located in the middle of the support frame 1. A fixing plate 15 is fixedly disposed in the lower middle part of the crossbar 14. The fixing plate 15 includes connecting plates 151 vertically fixed on both sides of its bottom. The connecting plates 151 are parallel to the connecting rods 11, and a horizontal opening is provided on the connecting plate 151. The groove 152 has an adjusting rack 16 fixedly installed on both sides of the bottom of the fixed plate 15. The fixed plate 15 has a fixed rod 18 installed parallel to each other on both sides of the fixed plate 15, and the adjusting rack 16 is located between the two connecting plates 151 and the fixed rod 18. The bottom of the fixed rod 18 is fixedly installed with a slide rail 181. The two ends of the connecting plate 151 are connected to the moving units respectively. The two moving units located at the same end of the fixed plate 15 are connected by a mating shaft 153, which slides through the groove 152. The two moving units located on the same side of the fixed plate 15 drive the steel arch section 4 to move in opposite directions.

[0037] The moving unit includes an adjusting gear 17, a moving component 19, and a sliding component 110. The sliding component 110 is slidably inserted into the slide rail 181. A fixing block is fixedly installed at the bottom of the sliding component 110. A mating block 1101 is fixedly installed on the side of the fixing block away from the fixing plate 15. The other side of the fixing block is fixedly connected to the side of the moving component 19. The connecting rod 11 has adjusting grooves 111 at both ends. The connecting rod at the bottom of the sliding head 13 is vertically fixed and passes through the adjusting grooves 111 and is fixedly connected to the mating block 1101. The moving components 19 in the two moving units located on the same side of the fixing plate 15 are far apart from each other. One end of the movable part is rotatably provided with a movable wheel 192, which assists in the movement of the mounting part 2 of the sliding head 13; the movable parts 19 of the two movable units located on the same side of the fixed plate 15 are rotatably provided with an adjusting gear 17 at their close ends. The adjusting gear 17 is meshed with the adjusting rack 16, and the mating shaft 153 is coaxially engaged with the central shaft of the adjusting gear 17. The adjusting gear 17 is driven to rotate by a movable motor (not shown in the figure), which drives the adjusting gear 17 to move along the adjusting rack 16, thereby causing the movable part 19 to move the mounting part 2, the support assembly 3 and the steel arch section 4.

[0038] The mounting component 2 has mounting ears 21 at both ends facing downwards. The mounting component 2 is fixedly connected to the fixed head 12 or the sliding head 13 through the mounting ears 21. A connecting part 22 is fixedly connected to the upper side of the middle part of the mounting component 2. The mounting component 2 has two rotating holes 23, which are located on both sides of the connecting part 22.

[0039] The connecting part 22 is equipped with a support assembly 3 in the middle. The support assembly 3 also includes a lifting cylinder 34, which is vertically fixed in the middle of the connecting part 22. The telescopic end of the lifting cylinder 34 is fixedly connected to the adjusting member 33 through the connecting part 22. The adjusting member 33 adopts a U-shaped structure and includes vertical plates on both sides. The two ends of the connecting part 22 are respectively provided with vertically penetrating connecting grooves 221. The two vertical plates extend downward and slide into the connecting grooves 221 at both ends of the connecting part 22. A drive cylinder 32 is rotatably provided on the side wall of the vertical plate. The support member 31 includes two symmetrically arranged arc-shaped plates. The two ends of the support member 31 are respectively provided with mating rods 311. The telescopic end of the drive cylinder 32 is rotatably connected to one of the mating rods 311. The support member 31 is connected to the upper surface of the adjusting member 33 through the other mating rod 311. The end is rotatably connected, and an abutment plate 312 is fixedly installed in the middle of the two mating rods 311. The abutment plate 312 is in contact with the lower surface of the steel arch section 4. An adjustment unit is set below the abutment plate 312. The adjustment unit includes a telescopic rod 313 and a telescopic box 314. The telescopic rod 313 is slidably set in the telescopic box 314. A spring is set between the telescopic rod 313 and the telescopic box 314. Pulling the two arc-shaped plates of the support member 31 can make the arc-shaped plates clamp the bottom of the steel arch section 4. The part of the arc-shaped plate in the support member 31 that is higher than the abutment plate 312 does not affect the welding of the transverse steel bars. The extension or retraction end of the drive cylinder 32 can drive the support member 31 to rotate and adjust. The adjustment makes the upper surface of the support member 31 fit with the steel arch section 4 to provide support. The structure of the support member 31 is designed to adapt to the support of steel arch sections 4 with different curvatures.

[0040] The positioning assembly 5 also includes a rotating cylinder 51, an adjusting cylinder 52, a mounting rod 54, and a sleeve 55. Three rotating cylinders 51 are provided, each corresponding to one of the three sets of mounting parts 2. The adjusting cylinder 52 is rotatably mounted on the mounting part 2 located in the middle of the support frame 1. The mounting part 2 is rotatably connected to the rotating cylinder 51 through a rotating hole 23. The adjusting cylinder 52 is located at the lower end of the mounting part 2, and its telescopic end is rotatably connected to the fixed end of the rotating cylinder 51. A mounting rod 54 is fixedly mounted on a positioning connecting block 53 located in the middle of the support frame 1. Sleeves 55 are fixedly mounted on positioning connecting blocks 53 located at both ends of the support frame 1. The sleeves 55 extend horizontally towards one end of the mounting rod 54, and are slidably inserted into the mounting rod 54, so that the movement of the adjusting cylinder 52 drives the positioning assembly 5 located on the same side of the support frame 1 to move synchronously.

[0041] Two support members 31 are provided. In another embodiment, taking a longitudinally connected segment of a steel arch frame that forms three steel arch frames after splicing as an example, each longitudinally connected segment of the steel arch frame includes six steel arch segments 4. Two adjacent steel arch segments 4 can be connected by steel bars in the transverse direction, and two steel arch segments 4 are spliced ​​together in the circumferential direction. Each steel arch segment 4 is provided with a connection hole for steel bars, and is fixed by steel bars passing through it. Two steel arch segments 4 are installed on each mounting member 2, and each support member 31 supports one steel arch segment 4. This arrangement directly positions and splices two shorter steel arch segments 4 in the circumferential direction on the device, making the operation more convenient.

[0042] A method for connecting tunnel steel arch frames, applied to the aforementioned tunnel steel arch frame connection device, includes the following steps:

[0043] S1: According to the design spacing of two adjacent steel arch frames, adjust the rotation of the adjusting gear 17 so that the adjusting gear 17 drives the moving part 19, the mounting part 2 and the steel arch section 4 to move along the adjusting rack 16, thereby adjusting the distance between two adjacent mounting parts 2 to adapt to the design spacing of two adjacent steel arch frames.

[0044] S2: Move the steel arch section 4 to a suitable position above the corresponding mounting part 2, adjust the extension end of the lifting cylinder 34 to drive the support part 31 closer to the bottom of the steel arch section 4, adjust the extension end of the drive cylinder 32 to drive the support part 31 to rotate until the upper part of the support part 31 contacts the lower surface of the steel arch section 4.

[0045] S3: Adjust the extension end of the adjusting cylinder 52 to drive the rotating cylinder 51 in the multiple positioning components 5 to rotate until the end of the steel arch section 4 contacts the corresponding positioning connecting block 53, and fix the end of the steel arch section 4 to the positioning connecting block 53.

[0046] S4: Install the remaining steel arch segments 4 onto the three corresponding sets of installation parts 2 in sequence, and fix the two adjacent steel arch segments 4 in the transverse direction by steel bars to complete the connection of the longitudinal row of steel arch frame segments.

Claims

1. A tunnel steel arch frame connecting device, characterized in that: The system includes a support frame, mounting components, and a support assembly. Three sets of mounting components are spaced apart. Each set of mounting components is connected to a fixed head in the center of the support frame, and each set is connected to a sliding head at both ends. The sliding heads move the mounting components via a moving unit, and two sliding heads move the mounting components in opposite directions via a gear and rack structure. Positioning assemblies are installed on both sides of each mounting component. Each positioning assembly includes three positioning connecting blocks, each corresponding to one of the three sets of mounting components. Adjacent positioning connecting blocks are telescopically connected. A steel arch section is fixedly installed between the positioning connecting blocks at both ends of the same mounting component. A support assembly is movably installed in the center of the mounting component. The support assembly includes an adjusting component slidably installed in the center of the mounting component. Support components are rotatably connected to both ends of the adjusting component. A drive cylinder is rotatably connected between the side of the adjusting component and the support component. The upper part of the support component abuts against the bottom of the steel arch section.

2. The tunnel steel arch frame connecting device according to claim 1, characterized in that: The support frame also includes connecting rods; connecting rods are symmetrically arranged on both sides of the support frame, and a fixed plate is fixedly arranged in the middle between the two connecting rods. The fixed plate includes connecting plates vertically fixed on both sides of the bottom. The two ends of the connecting plate are respectively connected to the moving unit. The two moving units located on the same side of the fixed plate drive the steel arch section to move towards or in opposite directions.

3. The tunnel steel arch frame connecting device according to claim 2, characterized in that: The moving unit includes a sliding component, and fixed rods are arranged parallel to each other on both sides of the fixed plate. A slide rail is fixedly installed at the bottom of the fixed rod, and the sliding component is slidably inserted into the slide rail.

4. The tunnel steel arch frame connecting device according to claim 3, characterized in that: Adjustable racks are fixedly installed on both sides of the bottom of the fixed plate, and the adjustable racks are located between the connecting plate and the fixed rod; a through groove is horizontally opened on the connecting plate, and two moving units located at the same end of the fixed plate are connected by a mating shaft, which slides through the through groove.

5. The tunnel steel arch frame connecting device according to claim 4, characterized in that: The moving unit also includes a moving component. A mating block is fixedly installed on the side of the bottom of the sliding component away from the fixed plate, and the other side is fixedly connected to the side of the moving component. Adjustment grooves are opened at both ends of the connecting rod, and a connecting rod vertically fixedly installed at the bottom of the sliding head passes through the adjustment groove and is fixedly connected to the mating block.

6. The tunnel steel arch frame connecting device according to claim 5, characterized in that: One end of the moving part is rotatably equipped with an adjusting gear, and the other end is rotatably equipped with a moving wheel. The adjusting gear meshes with the adjusting rack, and the mating shaft is coaxially fitted with the central shaft of the adjusting gear.

7. The tunnel steel arch frame connecting device according to claim 1, characterized in that: The positioning component also includes a rotating cylinder and an adjusting cylinder. The upper two sides of the mounting part are rotatably connected to the rotating cylinder through the opening of the rotating holes. The adjusting cylinder is rotatably installed at the end of the mounting part, and the telescopic end of the adjusting cylinder is rotatably connected to the fixed end of the rotating cylinder.

8. The tunnel steel arch frame connecting device according to claim 7, characterized in that: The mounting component has mounting ears at both ends of its bottom. The mounting component is fixedly connected to the fixed head or sliding head through the mounting ears. A connecting part is fixedly connected to the upper side of the middle part of the mounting component. A lifting cylinder is vertically fixed in the middle of the connecting part. The telescopic end of the lifting cylinder is fixedly connected to the adjusting component.

9. A method for connecting tunnel steel arch frames, applied to the tunnel steel arch frame connecting device according to any one of claims 1-8, characterized in that: Includes the following steps: S1: Based on the design spacing between two adjacent steel arch frames, adjust the rotation of the adjusting gear so that the adjusting gear drives the moving parts, mounting parts, support components and steel arch sections to move along the adjusting rack, thereby adjusting the distance between two adjacent mounting parts to adapt to the design spacing between two adjacent steel arch frames. S2: Move the steel arch section to a suitable position above the corresponding installation component, adjust the extension end of the lifting cylinder to drive the support component closer to the bottom of the steel arch section, adjust the extension end of the drive cylinder to drive the support component to rotate until the upper part of the support component contacts the lower surface of the steel arch section. S3: Adjust the extension end of the adjusting cylinder to drive the rotating cylinder in the positioning assembly to rotate until the end of the steel arch section contacts the corresponding positioning connecting block, and fix the end of the steel arch section to the positioning connecting block. S4: Install the remaining steel arch segments onto the corresponding three sets of installation parts in sequence, and connect and fix adjacent steel arch segments with steel bars to complete the connection of the longitudinal row of steel arch frame segments.

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