A welding auxiliary device for steel arch frames in tunnels with adverse geological conditions

Abstract

This invention provides an auxiliary device for welding steel arch frames in tunnels with adverse geological conditions, belonging to the technical field of tunnel construction equipment. It includes a base frame, an auxiliary frame, a mounting base, and two sets of clamping mechanisms. The auxiliary frame is slidably mounted on an arc-shaped guide rail of the base frame, the mounting base is mounted on the auxiliary frame, and the two sets of clamping mechanisms are respectively located at both ends of the mounting base. Each clamping mechanism includes a clamping base, a first clamping assembly, and a second clamping assembly. The first clamping assembly includes a rotating disk, a clamping frame, a clamping plate, and a clamping electric cylinder. The second clamping assembly includes a clamping block with a clamping groove for inserting reinforcing bars. A mounting groove is provided at the end of the clamping base away from the mounting base. The clamping block is slidably mounted in the mounting groove. A fastener is provided between the clamping base and the clamping block to limit the position of the clamping block. An elastic pulling member is provided in the mounting groove for pulling the clamping block. This invention can conveniently clamp structural steel and reinforcing bars, thereby facilitating subsequent welding operations of the reinforcing mesh on the steel arch frame.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology, and more specifically, to an auxiliary device for welding steel arch frames for tunnels in adverse geological conditions. Background Technology

[0002] The main adverse geological conditions for tunnels include water inrush and mudslides, karst, large deformations and rock bursts induced by high ground stress, and high burial depth accompanied by high geothermal activity. Due to the influence of high ground stress and groundwater, the surrounding rock stability of tunnels with adverse geological conditions is poor, and the surrounding rock at the tunnel face is prone to collapse.

[0003] The steel arch frame is a key structure in the initial support of a tunnel. As an active support structure, the steel arch frame must first form a skeleton to control the deformation of the surrounding rock, while the steel mesh acts as a passive support layer, enhancing the bond between the concrete and the surrounding rock. The steel arch frame typically consists of arched beams formed by welding multiple curved steel sections and connecting steel sections between adjacent arched beams. For tunnels with adverse geological conditions, the steel arch frame must be used in combination with the steel mesh, followed by shotcreting to form a reinforced concrete support structure to improve the overall load-bearing capacity. Therefore, it is also necessary to weld multiple longitudinal steel bars between the multiple arched beams and weld arched steel bars between the multiple longitudinal steel bars.

[0004] When welding steel sections to form a steel arch frame, the steel sections can be clamped by a three-arm arch frame trolley, making it convenient for workers to weld. However, for the welding of longitudinal and arch-shaped steel bars, since the welding needs to be done on the outside of the steel arch frame, and the gap between the welded steel arch frame and the tunnel is small, the three-arm arch frame trolley cannot be used to clamp the steel bars. Therefore, workers need to align the steel bars with the steel arch frame while welding, which is inconvenient. In addition, since the longitudinal and transverse steel bars need to be densely distributed on the outside of the steel arch frame, the welding workload is large, and the long-term holding of the steel bars also greatly increases the labor intensity. Summary of the Invention

[0005] The purpose of this invention is to provide a welding auxiliary device for steel arch frames in tunnels with adverse geological conditions. This device can conveniently clamp the steel sections and reinforcing bars, thereby facilitating the subsequent welding of the reinforcing mesh onto the steel arch frame, reducing the labor intensity of workers, and improving the efficiency of welding operations.

[0006] This invention is achieved through the following technical solution: a welding auxiliary device for steel arch frames in tunnels with adverse geological conditions, comprising:

[0007] The base frame is equipped with an arc-shaped guide rail that has the same curvature as the tunnel face.

[0008] An auxiliary frame, comprising a support beam and telescopic beams vertically disposed at both ends of the support beam, wherein the telescopic beams are slidably disposed on an arc-shaped guide rail via a traveling component;

[0009] The mounting base includes a first support and a second support. The first support is disposed on the side of the support beam away from the base frame, and the second support is rotatably disposed on the first support.

[0010] Two sets of clamping mechanisms are respectively disposed at both ends of the second support. Each clamping mechanism includes a clamping seat, on which a first clamping component for clamping the steel section and a second clamping component for clamping the reinforcing bar are disposed.

[0011] The first clamping assembly includes a rotating disk, a clamping frame, a clamping plate, and a clamping electric cylinder. The rotating disk is rotatably mounted on the clamping seat, the clamping frame is radially mounted on the rotating disk, the clamping plate is fixedly mounted on one end of the clamping frame, and the clamping electric cylinder is mounted on the rotating disk and can drive the clamping frame to slide.

[0012] The second clamping assembly includes a clamping block with a clamping groove for inserting a reinforcing bar. The clamping seat has an installation groove at one end away from the second support. The clamping block is slidably disposed in the installation groove. A fastener is provided between the clamping seat and the clamping block to limit the position of the clamping block. An elastic puller is provided in the installation groove to pull the clamping block.

[0013] Furthermore, the fastening component includes a fastening plate and a fastening post. The fastening plate is rotatably mounted on the clamping block and located on the side of the clamping groove near the clamping seat. The fastening plate is provided with a fastening hole. The fastening post is mounted on the clamping seat. After the clamping block moves outward from the clamping seat, the fastening hole can engage with the fastening post and maintain the position of the clamping block.

[0014] Furthermore, when the fastening hole is engaged with the fastening post, the fastening plate extends to the upper part of the clamping groove at one end.

[0015] Furthermore, the clamping groove includes a vertical groove and a horizontal groove that are perpendicular to each other and connected, wherein the width of the vertical groove is greater than the width of the horizontal groove.

[0016] Furthermore, a receiving groove is also provided on the side wall of the vertical groove away from the clamping seat, and the receiving groove is located above the horizontal groove.

[0017] Furthermore, a disc-shaped portion is fixedly provided on the clamping seat, and the rotating disk is rotatably connected to the disc-shaped portion. Limit seats are provided on both opposite sides of the rotating disk. The clamping frame includes a plate and columns vertically arranged on both sides of the plate. The ends of the columns away from the plate are fixedly connected to the clamping plate. The cylinder of the clamping electric cylinder is fixedly connected to one of the limit seats, and the piston rod of the clamping electric cylinder is fixedly connected to the plate.

[0018] Furthermore, the first support is provided with a rotating assembly for driving the second support to rotate. The rotating assembly includes a rotating motor, a worm gear, and a worm. The second support is rotatably connected to the first support via a rotating column. The worm gear is coaxially connected to the rotating column. The worm is disposed on the first support and meshes with the worm gear. The rotating motor is disposed at one end of the worm, and the output shaft of the rotating motor is fixedly connected to the worm. The clamping seat is slidably disposed at both ends of the second support and fixed to its slidable position by bolts.

[0019] Furthermore, the support beam is provided with a sliding assembly for driving the first support to move along the length direction of the support beam. The sliding assembly includes a sliding motor, a lead screw, and a sliding block. The side of the support beam away from the base frame is provided with a sliding groove along its own length direction. The lead screw is rotatably connected in the sliding groove along the length direction of the sliding groove. The sliding block is slidably connected in the sliding groove and threadedly engaged with the lead screw. The first support is fixedly disposed on the side of the sliding block facing out of the sliding groove.

[0020] Furthermore, the traveling assembly includes a traveling seat, a drive motor, and a drive gear. The traveling seat is slidably disposed on the arc-shaped guide rail along its length direction. The drive gear is rotatably disposed inside the traveling seat. The drive motor is disposed on one side of the traveling seat, and the output shaft of the drive motor is fixedly connected to the drive gear. An arc-shaped rack that meshes with the drive gear is provided on the arc-shaped guide rail.

[0021] Furthermore, the telescopic beam includes a bottom beam and a top beam. The bottom beam is fixedly mounted on the travel seat, and the top beam is slidably connected inside the bottom beam. A telescopic electric cylinder is mounted on the bottom beam, and the piston rod of the telescopic electric cylinder is fixedly connected to the support beam.

[0022] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0023] 1. This invention, by setting a first clamping component and a second clamping component on the clamping seat, allows the first clamping component to clamp the arc-shaped steel section. After clamping, the auxiliary frame slides along the length of the arc-shaped guide rail via the traveling component, aligning the head end of the arc-shaped steel section to be welded with the end end of the already welded arc-shaped steel section, enabling workers to easily weld the arc-shaped steel section into an arch beam. Then, the first clamping component clamps the connecting steel section to facilitate welding it between two adjacent arch beams. Next, the second clamping component clamps the longitudinal reinforcing bars, ensuring multiple longitudinal reinforcing bars are tightly attached to designated positions on the steel arch frame for welding. Finally, the state of the second clamping component is changed to clamp the arch reinforcing bars, ensuring they are tightly attached to the longitudinal reinforcing bars for welding. This simplifies the entire welding process of the steel arch frame, reducing welding difficulty while improving welding efficiency.

[0024] 2. In this invention, the clamping block is connected to the clamping seat through an elastic tension member, and a fastening member is provided between the clamping seat and the clamping block to restrict the position of the clamping block. Both the longitudinal steel bars and the arched steel bars can press against the fastening plate, thereby causing the fastening plate to flip and the fastening hole to move out of the fastening post. This allows the elastic tension member to pull the clamping block, so that the clamping groove applies a force to the longitudinal steel bars or the arched steel bars, thereby making the longitudinal steel bars tightly adhere to the arched beam, or making the arched steel bars tightly adhere to the longitudinal steel bars, which facilitates the welding process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the usage state of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the auxiliary frame, mounting base, clamping base, first clamping assembly, and second clamping assembly of the present invention.

[0028] Figure 4 for Figure 3 Enlarged view of part A;

[0029] Figure 5 This is a schematic diagram of the structure of the first clamping component of the present invention when clamping an arc-shaped steel section;

[0030] Figure 6 This is a schematic diagram of the structure of the first clamping assembly of the present invention when clamping the connecting steel.

[0031] Figure 7 This is a schematic diagram of the structure of the second clamping component on the clamping seat when the clamping block of the present invention extends out of the clamping seat;

[0032] Figure 8 This is a schematic diagram of the structure of the second clamping component on the clamping seat when the clamping block of the present invention is retracted into the clamping seat;

[0033] Figure 9 This is a schematic diagram of the structure of the second clamping component of the present invention when clamping a longitudinal steel bar;

[0034] Figure 10 This is a schematic diagram of the structure of the second clamping component of the present invention when clamping the arched steel bar;

[0035] Reference numerals: 1-Base frame, 11-Arc-shaped guide rail, 111-Arc-shaped rack, 2-Auxiliary frame, 21-Support beam, 211-Sliding assembly, 2111-Sliding motor, 2112-Screw screw, 2113-Sliding block, 22-Telescopic beam, 221-Bottom beam, 222-Top beam, 223-Telescopic electric cylinder, 23-Traveling assembly, 231-Traveling seat, 232-Drive motor, 233-Drive gear, 3-Mounting base, 31-First support, 32-Second support, 321-Rotating column, 33-Rotating assembly, 331-Rotating motor, 332 - Worm gear, 333 Worm, 4 Clamping seat, 401 Disc-shaped part, 402 Bolt, 41 Mounting slot, 5 First clamping assembly, 51 Rotating disk, 511 Limiting seat, 52 Clamping frame, 521 Plate, 522 Column, 53 Clamping plate, 54 Clamping cylinder, 6 Second clamping assembly, 61 Clamping block, 611 Clamping slot, 6111 Vertical slot, 6112 Horizontal slot, 6113 Receiving slot, 62 Fastening element, 621 Fastening plate, 6211 Fastening hole, 622 Fastening post, 63 Elastic pulling element. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] Example

[0039] The following is for reference Figures 1-10 As shown in the illustration, and further illustrated with specific embodiments, this embodiment provides an auxiliary device for welding steel arch frames in tunnels with adverse geological conditions. (Refer to...) Figure 1 , Figure 2As shown, the system includes a base frame 1, an auxiliary frame 2, a mounting base 3, and two sets of clamping mechanisms. The base frame 1 is equipped with an arc-shaped guide rail 11 with the same curvature as the tunnel face. The auxiliary frame 2 includes a support beam 21 and telescopic beams 22 vertically arranged at both ends of the support beam 21. The telescopic beams 22 are slidably mounted on the arc-shaped guide rail 11 via a traveling component 23. The mounting base 3 includes a first support 31 and a second support 32. The first support 31 is located on the side of the support beam 21 away from the base frame 1, and the second support 32 is rotatably mounted on the first support 31. The two sets of clamping mechanisms are respectively installed at both ends of the second support 32. The clamping mechanism includes a clamping seat 4, on which a first clamping component 5 for clamping structural steel and a second clamping component 6 for clamping reinforcing bars are provided.

[0040] When arc-shaped steel sections need to be welded sequentially to form arched beams, the first arc-shaped steel section is first welded to a prefabricated anchor rod inside the tunnel. Then, the first clamping assembly 5 clamps the arc-shaped steel section. Next, the traveling assembly 23 drives the auxiliary frame 2 to slide along the length of the arc-shaped guide rail 11, aligning the head of the arc-shaped steel section to be welded with the end of the already welded arc-shaped steel section, allowing workers to easily perform the welding. The arc-shaped steel sections are then welded to form arched beams. The above steps are repeated to weld multiple arched beams. Next, the first clamping assembly 5 clamps the connecting steel sections, moving multiple connecting steel sections one by one to the designated positions on the designated arched beams for welding. The connecting steel sections connect adjacent arched beams to form the overall frame of the steel arch. Then, the second clamping assembly 6 clamps the longitudinal reinforcing bars, ensuring they are tightly attached to the designated positions on the steel arch and welded. Finally, the state of the second clamping assembly 6 is changed to clamp the arched reinforcing bars, ensuring they are tightly attached to the longitudinal reinforcing bars and welded.

[0041] Reference Figure 2 As shown, the traveling assembly 23 includes a traveling seat 231, a drive motor 232, and a drive gear 233. The traveling seat 231 is slidably mounted on the arc-shaped guide rail 11 along its length. The drive gear 233 is rotatably mounted inside the traveling seat 231. The drive motor 232 is mounted on one side of the traveling seat 231, and its output shaft is fixedly connected to the drive gear 233. The arc-shaped guide rail 11 is provided with an arc-shaped rack 111 that meshes with the drive gear 233. When the drive motor 232 is started, it drives the drive gear 233 to rotate. Under the meshing action of the arc-shaped rack 111, the drive gear 233 can drive the auxiliary frame 2 to slide along the length of the arc-shaped guide rail 11, thereby causing the mounting base 3 and the two sets of clamping mechanisms to move synchronously.

[0042] Reference Figure 2 , Figure 3As shown, the telescopic beam 22 includes a bottom beam 221 and a top beam 222. The bottom beam 221 is fixedly mounted on the travel seat 231, and the top beam 222 is slidably connected inside the bottom beam 221. A telescopic electric cylinder 223 is mounted on the bottom beam 221, and the piston rod of the telescopic electric cylinder 223 is fixedly connected to the support beam 21. After the first clamping assembly 5 clamps the arc-shaped steel or connecting steel, as the traveling assembly 23 slides along the length of the arc-shaped guide rail 11, the telescopic electric cylinder 223 drives the support beam 21 to move closer to the bottom beam 221 and the top beam 222 to retract inwards towards the bottom beam 221 to ensure smooth movement and prevent the arc-shaped steel or connecting steel to be welded from colliding with the already welded arc-shaped steel. When the traveling assembly 23 slides to the designated position, the piston rod of the telescopic electric cylinder 223 extends outwards from the cylinder to drive the support beam 21 to move away from the bottom beam 221, so as to move the next arc-shaped steel or connecting steel to be welded to the designated position for welding operations.

[0043] Reference Figure 3 , Figure 4 As shown, a rotating assembly 33 for driving the second support 32 to rotate is provided on the first support 31. The rotating assembly 33 includes a rotating motor 331, a worm gear 332, and a worm 333. The second support 32 is rotatably connected to the first support 31 via a rotating column 321. The worm gear 332 is coaxially connected to the rotating column 321. The worm 333 is provided on the first support 31 and meshes with the worm gear 332. The rotating motor 331 is provided at one end of the worm 333, and the output shaft of the rotating motor 331 is fixedly connected to the worm 333. The clamping seat 4 is slidably provided at both ends of the second support 32 and fixed to its slidable position by bolts 402 (see reference). Figure 5 After welding the longitudinal steel bars, when it is necessary to clamp the arched steel bars, since the arched steel bars are arranged perpendicular to the longitudinal steel bars, it is necessary to change the orientation of the second clamping assembly 6. At this time, the worm gear 333 is rotated by rotating the motor 331. Under the meshing action of the worm gear 333, the worm wheel 332 rotates and drives the second support 32 to rotate 90°, so that the second clamping assembly 6 can switch from the state of clamping the longitudinal steel bars to the state of clamping the arched steel bars.

[0044] Reference Figure 3As shown, a sliding assembly 211 is provided on the support beam 21 to drive the first support 31 to move along the length direction of the support beam 21. The sliding assembly 211 includes a sliding motor 2111, a lead screw 2112, and a sliding block 2113. A groove is formed on the side of the support beam 21 away from the base frame 1 along its own length direction. The lead screw 2112 is rotatably connected in the groove along its length direction. The sliding block 2113 is slidably connected in the groove and threadedly engaged with the lead screw 2112. The first support 31 is fixedly set on the side of the sliding block 2113 facing out of the groove. The sliding motor 2111 drives the lead screw 2112 to rotate, and the lead screw 2112 drives the mounting seat 3 to slide along the length direction of the support beam 21 through the slider. That is, after each arched steel bar is welded, the mounting seat 3 and the clamping mechanism can be moved longitudinally a certain distance to facilitate moving to the position of the next arched steel bar to be welded and clamping the arched steel bar.

[0045] Reference Figure 5 , Figure 6 As shown, the first clamping assembly 5 includes a rotating disk 51, a clamping frame 52, a clamping plate 53, and a clamping electric cylinder 54. The rotating disk 51 is rotatably mounted on the clamping seat 4, the clamping frame 52 is radially mounted on the rotating disk 51, the clamping plate 53 is fixedly mounted on one end of the clamping frame 52, and the clamping electric cylinder 54 is mounted on the rotating disk 51 and can drive the clamping frame 52 to slide. When clamping the arc-shaped steel, the arc-shaped steel is placed between the clamping plate 53 and the clamping seat 4, and the clamping electric cylinder 54 is activated to move the clamping frame 52 and drive the clamping plate 53 to move closer to the clamping seat 4, thus clamping the arc-shaped steel. When clamping the connecting steel, the rotating disk 51 is rotated 90° and then the connecting steel is placed between the clamping plate 53 and the clamping seat 4. The clamping electric cylinder 54 is activated to move the clamping frame 52 and drive the clamping plate 53 to move closer to the clamping seat 4, thus clamping the connecting steel.

[0046] Reference Figure 5 As shown, a disc-shaped portion 401 is fixedly mounted on the clamping base 4, and a rotating disk 51 is rotatably connected to the disc-shaped portion 401. Limit seats 511 are welded to opposite sides of the rotating disk 51. (Refer to...) Figure 6As shown, the clamping frame 52 includes a plate 521 and columns 522 vertically welded to both sides of the plate 521. The ends of the columns 522 away from the plate 521 are fixedly connected to the clamping plate 53. The cylinder of the clamping electric cylinder 54 is fixedly connected to one of the limiting seats 511, and the piston rod of the clamping electric cylinder 54 is fixedly connected to the plate 521. Activating the clamping electric cylinder 54 and moving its piston rod inwards from the cylinder can drive the clamping plate 53 away from the clamping seat 4 via the clamping frame 52, facilitating the placement of the arc-shaped steel section or connecting steel section between the clamping plate 53 and the clamping seat 4. Activating the clamping electric cylinder 54 and moving its piston rod outwards from the cylinder can drive the clamping plate 53 towards the clamping seat 4 via the clamping frame 52, thus clamping the arc-shaped steel section or connecting steel section.

[0047] Reference Figure 3 , Figure 7 and Figure 8 As shown, the second clamping assembly 6 includes a clamping block 61, on which a clamping groove 611 for inserting a reinforcing bar is provided. The clamping seat 4 has an installation groove 41 at one end away from the second support 32. The clamping block 61 is slidably disposed in the installation groove 41. A fastener 62 for limiting the position of the clamping block 61 is provided between the clamping seat 4 and the clamping block 61. An elastic pulling member 63 for pulling the clamping block 61 is provided in the installation groove 41. In the initial state, the clamping block 61 is pulled outward from the mounting groove 41 by a certain distance and the position of the clamping block 61 is restricted by the fastener 62. After the longitudinal steel bar is placed into the clamping groove 611, the restriction of the position of the clamping block 61 by the fastener 62 is released. Under the pull of the elastic tension member 63, the clamping block 61 moves into the mounting groove 41 and drives the longitudinal steel bar to be tightly attached to the arch beam to facilitate welding. After the arch steel bar is placed into the clamping groove 611, the restriction of the position of the clamping block 61 by the fastener 62 is released. Under the pull of the elastic tension member 63, the clamping block 61 moves into the mounting groove 41 and drives the arch steel bar to be tightly attached to the longitudinal steel bar to facilitate welding.

[0048] Reference Figure 7 , Figure 8As shown, the fastening member 62 includes a fastening plate 621 and a fastening post 622. The fastening plate 621 is rotatably connected to the clamping block 61 and is located on the side of the clamping groove 611 near the clamping seat 4. The fastening plate 621 is provided with a fastening hole 6211. The fastening post 622 is provided on the clamping seat 4. When the clamping block 61 moves outward from the clamping seat 4, the fastening hole 6211 can be fastened to the fastening post 622 and maintain the position of the clamping block 61. When the fastening hole 6211 is fastened to the fastening post 622, the end of the fastening plate 621 facing the clamping groove 611 extends to the upper part of the clamping groove 611. When the longitudinal or arched reinforcing bars are placed into the clamping groove 611, both the longitudinal and arched reinforcing bars can press against the snap-fit ​​plate 621, causing the snap-fit ​​plate 621 to flip and the snap-fit ​​hole 6211 to move out of the snap-fit ​​post 622. This allows the elastic tension member 63 to pull the clamping block 61, causing the clamping groove 611 to apply force to the longitudinal or arched reinforcing bars, thus making the longitudinal reinforcing bars tightly adhere to the arched beam, or the arched reinforcing bars tightly adhere to the longitudinal reinforcing bars, facilitating the welding process. In this embodiment, the elastic tension member 63 is a spring; in other embodiments, an elastic steel sheet can also be used as the elastic tension member 63.

[0049] Furthermore, the clamping groove 611 includes a vertical groove 6111 and a horizontal groove 6112 that are perpendicular to each other and connected. The width of the vertical groove 6111 is greater than the width of the horizontal groove 6112. A receiving groove 6113 is also provided on the side wall of the vertical groove 6111 away from the clamping seat 4, and the receiving groove 6113 is located above the horizontal groove 6112. Specifically, the width of the horizontal groove 6112 is the same as the diameter of the reinforcing bar to be welded, and the width of the vertical groove 6111 is twice the diameter of the reinforcing bar to be welded. After welding one reinforcing bar, the next reinforcing bar to be welded is placed in the receiving groove 6113, and then the clamping block 61 is pulled outward from the clamping seat 4, which allows the clamping block 61 to separate from the welded reinforcing bar.

[0050] Reference Figure 8 , Figure 9 As shown, during the welding of longitudinal steel bars, after one longitudinal steel bar is welded, the next longitudinal steel bar is placed in the receiving groove 6113. The clamping block 61 is pulled by the longitudinal steel bar. Then, the auxiliary frame 2, the mounting base 3 and the clamping mechanism are moved a distance to the next welding position by the traveling component 23. The longitudinal steel bar is then pressed through the vertical groove 6111 and into the horizontal groove 6112. Under the action of the elastic tension member 63, the longitudinal steel bar can be stably attached to the arch beam to facilitate the welding operation.

[0051] Reference Figure 8 , Figure 10As shown, during the welding process of the arched steel bars, after one arched steel bar is welded, the next arched steel bar is placed in the receiving groove 6113. The clamping block 61 is pulled by the arched steel bar, and then the mounting base 3 and the clamping mechanism are moved a distance to the next welding position by the sliding component 211. The arched steel bar is then pressed into the transverse groove 6112. Under the action of the elastic tension member 63, the arched steel bar can be stably attached to the longitudinal steel bar to facilitate the welding operation.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A welding auxiliary device for steel arch frames in tunnels with adverse geological conditions, characterized in that, include: The base frame (1) is provided with an arc-shaped guide rail (11) that has the same curvature as the tunnel face. The auxiliary frame (2) includes a support beam (21) and telescopic beams (22) vertically arranged at both ends of the support beam (21). The telescopic beams (22) are slidably arranged on the arc-shaped guide rail (11) by the traveling component (23). Mounting base (3), the mounting base (3) includes a first support (31) and a second support (32), the first support (31) is disposed on the side of the support beam (21) away from the base frame (1), and the second support (32) is rotatably disposed on the first support (31); Two sets of clamping mechanisms are respectively set at both ends of the second support (32). Each clamping mechanism includes a clamping seat (4). The clamping seat (4) is provided with a first clamping component (5) for clamping steel and a second clamping component (6) for clamping reinforcing bars. The first clamping assembly (5) includes a rotating disk (51), a clamping frame (52), a clamping plate (53), and a clamping electric cylinder (54). The rotating disk (51) is rotatably mounted on the clamping seat (4). The clamping frame (52) is radially mounted on the rotating disk (51). The clamping plate (53) is fixedly mounted on one end of the clamping frame (52). The clamping electric cylinder (54) is mounted on the rotating disk (51) and can drive the clamping frame (52) to slide. The second clamping assembly (6) includes a clamping block (61), the clamping block (61) is provided with a clamping groove (611) for inserting a reinforcing bar, the clamping seat (4) is provided with an installation groove (41) at one end away from the second support (32), the clamping block (61) is slidably disposed in the installation groove (41), a fastener (62) for limiting the position of the clamping block (61) is provided between the clamping seat (4) and the clamping block (61), and an elastic pulling member (63) for pulling the clamping block (61) is provided in the installation groove (41); A disc-shaped part (401) is fixedly provided on the clamping seat (4), and the rotating disk (51) is rotatably connected to the disc-shaped part (401). Limit seats (511) are provided on both sides of the rotating disk (51). The clamping frame (52) includes a plate (521) and columns (522) arranged vertically on both sides of the plate (521). The ends of the columns (522) away from the plate (521) are fixedly connected to the clamping plate (53). The cylinder of the clamping electric cylinder (54) is fixedly connected to one of the limit seats (511), and the piston rod of the clamping electric cylinder (54) is fixedly connected to the plate (521). The first support (31) is provided with a rotating assembly (33) for driving the second support (32) to rotate. The rotating assembly (33) includes a rotating motor (331), a worm gear (332) and a worm (333). The second support (32) is rotatably connected to the first support (31) through a rotating column (321). The worm gear (332) is coaxially connected to the rotating column (321). The worm (333) is provided on the first support (31) and meshes with the worm gear (332). The rotating motor (331) is provided at one end of the worm (333) and the output shaft of the rotating motor (331) is fixedly connected to the worm (333). The clamping seat (4) is slidably provided at both ends of the second support (32) and fixed to the slidable position by bolts (402).

2. The auxiliary device for welding steel arch frames for tunnels in adverse geological conditions according to claim 1, characterized in that, The fastening member (62) includes a fastening plate (621) and a fastening post (622). The fastening plate (621) is rotatably mounted on the clamping block (61) and located on the side of the clamping groove (611) close to the clamping seat (4). The fastening plate (621) is provided with a fastening hole (6211). The fastening post (622) is mounted on the clamping seat (4). After the clamping block (61) moves outward from the clamping seat (4), the fastening hole (6211) can be fastened to the fastening post (622) and maintain the position of the clamping block (61).

3. The auxiliary device for welding steel arch frames for tunnels in adverse geological conditions according to claim 2, characterized in that, When the fastening hole (6211) is fastened to the fastening post (622), the fastening plate (621) extends to the upper part of the clamping groove (611) at one end facing the clamping groove (611).

4. The auxiliary device for welding steel arch frames for tunnels in adverse geological conditions according to claim 1, characterized in that, The clamping groove (611) includes a vertical groove (6111) and a horizontal groove (6112) that are perpendicular to each other and connected. The width of the vertical groove (6111) is greater than the width of the horizontal groove (6112).

5. The auxiliary device for welding steel arch frames for tunnels in adverse geological conditions according to claim 4, characterized in that, The vertical groove (6111) is provided with a receiving groove (6113) on the side wall away from the clamping seat (4), and the receiving groove (6113) is located above the horizontal groove (6112).

6. The auxiliary device for welding steel arch frames for tunnels in adverse geological conditions according to claim 1, characterized in that, The support beam (21) is provided with a sliding assembly (211) for driving the first support (31) to move along the length direction of the support beam (21). The sliding assembly (211) includes a sliding motor (2111), a lead screw (2112) and a sliding block (2113). The side of the support beam (21) away from the base frame (1) is provided with a sliding groove along its own length direction. The lead screw (2112) is rotatably connected in the sliding groove along the length direction of the sliding groove. The sliding block (2113) is slidably connected in the sliding groove and threadedly engaged with the lead screw (2112). The first support (31) is fixedly provided on the side of the sliding block (2113) facing out of the sliding groove.

7. The auxiliary device for welding steel arch frames for tunnels in adverse geological conditions according to claim 1, characterized in that, The traveling assembly (23) includes a traveling seat (231), a drive motor (232), and a drive gear (233). The traveling seat (231) is slidably disposed on the arc-shaped guide rail (11) along the length direction of the arc-shaped guide rail (11). The drive gear (233) is rotatably disposed inside the traveling seat (231). The drive motor (232) is disposed on one side of the traveling seat (231), and the output shaft of the drive motor (232) is fixedly connected to the drive gear (233). An arc-shaped rack (111) is provided on the arc-shaped guide rail (11) to mesh with the drive gear (233).

8. The auxiliary device for welding steel arch frames for tunnels in adverse geological conditions according to claim 7, characterized in that, The telescopic beam (22) includes a bottom beam (221) and a top beam (222). The bottom beam (221) is fixedly mounted on the travel seat (231), and the top beam (222) is slidably connected inside the bottom beam (221). A telescopic electric cylinder (223) is mounted on the bottom beam (221), and the piston rod of the telescopic electric cylinder (223) is fixedly connected to the support beam (21).

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