A tunnel steel arch frame advance small conduit automatic hole drilling device and method

Abstract

The present application relates to the technical field of tunnel steel arch drilling, and in particular to an automatic hole-opening device for drilling a small conduit in advance of a tunnel steel arch, comprising a base, a hole-opening mechanism and a limiting mechanism, wherein the hole-opening mechanism is installed on the base; the limiting mechanism comprises a limiting frame and a buckle assembly, wherein the limiting frame comprises a horizontal frame plate section and two groups of vertical limiting sections, wherein the two groups of vertical limiting sections form a limiting cavity; the buckle assembly comprises a driving motor, an inner buckle plate and a friction wheel, wherein the friction wheel is rotatably connected to the inner buckle plate, and the friction wheel abuts against the inner wall of the steel arch, and a sliding cavity is formed between the friction wheel and the vertical limiting section; a hole-opening method for drilling a small conduit in advance of a tunnel steel arch comprises steel arch installation, automatic creeping of the steel arch, hole-opening of the steel arch, hole-opening at the next position and disassembly of the steel arch. Through the automatic hole-opening device and method for drilling a small conduit in advance of a tunnel steel arch, the limiting and creeping of the steel arch are realized, thereby realizing hole-opening at different positions of the steel arch, and improving the hole-opening efficiency of the steel arch.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel steel arch frame drilling, and in particular to an automatic hole-opening device and method for advanced small-conductor drilling of tunnel steel arch frames. Background Art

[0002] The tunnel steel arch frame is a support measure used to reinforce underground tunnel projects. During the construction of the tunnel steel arch frame, it is necessary to install an advance small guide tube on the steel arch frame to facilitate the pre-support of weak fracture zones, shallow buried sections, portal biased sections, sand layers, gravel sections, and fault fracture zones. Therefore, it is necessary to open multiple installation holes with the same aperture on the web of the tunnel steel arch frame for installing the advance small guide tube.

[0003] The patent document with application number 201921828219.5 discloses a tunnel steel arch advance small catheter drilling positioning cutter, including an operating handle, an operating rod, a rotating disk, a support card seat, a plasma cutting head and a plasma cutting machine delivery pipeline; the support card seat includes a support mounting plate and a front card plate and a rear card plate located on both sides of the support mounting plate; the support mounting plate is horizontally arranged; the front card plate and the rear card plate are both vertically arranged, and the front card plate and the rear card plate are respectively clamped on the outside of the front edge and the rear edge of the tunnel steel arch frame, thereby clamping the support card seat on the top of the tunnel steel arch frame; the support mounting plate A supporting through hole is provided at the center of the mounting plate; the top end of the operating rod is fixed to the operating handle; the bottom end of the operating rod is fixed to the rotating disk; the rotating disk is assembled in the supporting through hole of the supporting mounting plate to realize the rotation of the rotating disk around the supporting through hole; a rotating disk through hole is provided in the axial direction of the rotating disk, and the distance between the rotating disk through hole and the center of the rotating disk is the radius of the drilling hole; the top end of the plasma cutting machine delivery pipeline is fixed to the operating rod, the bottom end of the plasma cutting machine delivery pipeline passes through the rotating disk through hole and extends to the bottom of the rotating disk through hole, and a plasma cutting head is assembled at the bottom end of the plasma cutting machine delivery pipeline.

[0004] In view of the above-mentioned related technologies, the applicant believes that during the drilling process of the tunnel steel arch frame, workers are required to push the tunnel steel arch frame to slide along the supporting bracket, which affects the drilling efficiency of the tunnel steel arch frame. Summary of the invention

[0005] In order to improve the hole opening efficiency of a tunnel steel arch frame, the present application provides an automatic hole opening device and method for advanced small-conductor drilling of a tunnel steel arch frame.

[0006] In the first aspect, the present application provides a tunnel steel arch frame advance small conduit automatic hole drilling device, which adopts the following technical solution:

[0007] An automatic hole-opening device for advanced small-pipe drilling of a tunnel steel arch frame, comprising a base, a hole-opening mechanism for opening a hole in the steel arch frame, and a limiting mechanism for limiting the position of the steel arch frame;

[0008] The hole opening mechanism is installed on the base;

[0009] The limiting mechanism includes a limiting frame and a buckle assembly for driving the steel arch frame to move along the limiting frame;

[0010] The limit frame includes a horizontal frame plate section and two groups of vertical limit segments located on opposite sides of the horizontal frame plate section, the horizontal frame plate section is fixedly connected to the top walls of the two groups of vertical limit segments, and the two groups of vertical limit segments form a limit cavity for sliding of the steel arch frame;

[0011] The reverse buckle assembly includes a driving motor, an inner buckle plate located on each of the vertical limit sections, and a friction wheel located on each inner buckle plate; the inner buckle plate is arranged at one end of the vertical limit section away from the horizontal frame section, and the inner buckle plate is located between the two vertical limit sections; the friction wheel is rotatably connected to the inner buckle plate, and the friction wheel abuts against the inner wall of the steel arch frame; a sliding cavity for the side wall of the steel arch frame to pass through is formed between the friction wheel and the vertical limit section; the driving motor is used to drive the friction wheel to rotate.

[0012] By adopting the above technical scheme, the steel arch frame is installed on the limit frame, and the side plate of the steel arch frame is installed in the sliding cavity, the position of the steel arch frame is adjusted so that the starting position of the end of the steel arch frame is flush with the discharging end of the limit frame, and the driving motor is adjusted. The driving motor drives the friction wheel to rotate, and the friction between the friction wheel and the steel arch frame makes the friction wheel drive the steel arch frame to move, and the steel arch frame moves to the opening position, and the opening mechanism is adjusted to realize the opening of the steel arch frame, and then the position of the steel arch frame is adjusted again, and the arch frame moves to the opening position of the second hole, and the opening mechanism is adjusted to realize the opening of the second hole of the steel arch frame, and this operation is repeated to realize the opening of holes in different positions of the steel arch frame; the designed tunnel steel arch frame advance small guide tube drilling automatic hole opening device realizes the limiting of the steel arch frame and the crawling of the steel arch frame through the reverse buckle component, thereby realizing the opening of holes in different positions of the steel arch frame, and improving the opening efficiency of the steel arch frame.

[0013] Optionally, the inner gusset plate includes a horizontal connecting portion, a vertical connecting portion and a mounting portion, one end of the horizontal connecting portion is arranged on the vertical limiting section away from the horizontal frame section, and the horizontal connecting portion is connected away from the vertical connecting portion; the mounting portion is arranged on the vertical connecting portion, the friction wheel and the driving motor are both installed on the mounting portion, and the friction wheel extends out of the mounting portion and abuts against the side wall of the steel arch frame.

[0014] By adopting the above technical scheme, the inner buckle plate is arranged in sections, and its horizontal connecting part is used to connect the vertical connecting part and the horizontal frame plate section; its vertical connecting part is used to connect the mounting part and the horizontal connecting part, and realize the support of the mounting part; its mounting part is used to install the friction wheel, and through the sliding cavity between the mounting part and the vertical limit section, it is convenient to realize the sliding of the steel arch frame side plate.

[0015] Optionally, the vertical limiting section is hinged to the horizontal connecting portion, and a torsion spring for driving the friction wheel to abut against a side wall of the steel arch is provided at the connection between the vertical limiting section and the horizontal connecting portion.

[0016] By adopting the above technical solution, the torsion spring is arranged to facilitate driving the inner buckle plate to rotate, thereby achieving abutment between the inner buckle plate and the side plate of the steel arch frame, and then achieving the friction wheel driving the steel arch frame to move along the sliding cavity.

[0017] Optionally, a locking member for limiting the steel arch frame is provided on the vertical limiting section, and the locking member includes a first cylinder and a locking plate. The first cylinder is installed on the vertical limiting section, and the piston rod of the first cylinder passes through one end of the vertical limiting section and is connected to the locking plate. The piston rod of the first cylinder pushes the locking plate and the steel arch frame tightly.

[0018] By adopting the above technical solution, the first cylinder is adjusted, and the piston rod of the first cylinder drives the locking plate to move until the locking plate and the steel arch frame are tightly pressed against each other, thereby fixing the position of the steel arch frame; the designed locking member facilitates the fixing of the position of the steel arch frame, thereby realizing the positioning of the steel arch frame during the hole opening process, and improving the hole opening accuracy of the steel arch frame.

[0019] Optionally, the vertical limiting section is fixedly connected to the horizontal connecting part, a sliding groove is provided on the horizontal connecting part, the sliding groove is arranged along the length direction of the horizontal connecting part, a slider sliding along the sliding groove is installed at the end of the vertical connecting part close to the horizontal connecting part, and a driving member for the slider to slide along the sliding groove is provided on the horizontal connecting part.

[0020] By adopting the above technical solution, the driving member is adjusted, and the driving member drives the slider to slide along the slide groove, the slider drives the vertical connection part to move, the vertical connection part drives the installation part to move, and the installation part drives the friction wheel to move until the friction wheel and the side plate of the steel arch frame are tightly abutted, and then the friction wheel is driven to rotate by the driving motor, and the friction wheel drives the movement of the steel arch frame; the designed slider and slide groove are convenient for driving the distance between the friction wheel and the vertical limit section, and are convenient for pressing the steel arch frames of different widths, so that the friction wheel drives the movement of steel arch frames of different widths.

[0021] Optionally, the driving member includes a double-headed motor and two threaded rods, the two threaded rods are coaxially mounted on the output shaft of the double-headed motor, the threads of the two threaded rods have opposite rotation directions, and the threaded rods are arranged along the length direction of the slide groove, the threaded rods are rotatably connected to the horizontal connecting part, and the threaded rods pass through the slider, and the threaded rods are threadedly connected to the slider.

[0022] By adopting the above technical solution, the double-headed motor is adjusted, and the driving shaft of the double-headed motor drives the threaded rod to rotate, and the threaded rod drives the slider to move along the slide groove. Since the threads of the threaded rod at both ends of the double-headed motor rotate in opposite directions, the two relatively arranged sliders are moved closer to or away from each other, thereby realizing the position adjustment of the relatively arranged friction wheels; the designed driving member is convenient for driving the slider to slide along the slide groove, thereby realizing the position adjustment of the friction wheel, and at the same time, it is convenient for the steel arch frame to be located in the center position of the limit frame.

[0023] Optionally, a limiting member for limiting the position of the steel arch frame is provided on the horizontal frame plate section, and the limiting member includes a second cylinder and a limiting plate, the second cylinder is connected to the horizontal frame plate section, the limiting plate is connected to the piston rod of the second cylinder, and the piston rod of the second cylinder drives the limiting plate to press against the steel arch frame.

[0024] By adopting the above technical solution, the second cylinder is adjusted, and the piston rod of the second cylinder drives the limit plate to move until the limit plate is tightly abutted against the steel arch frame, thereby fixing the position of the steel arch frame; the designed limit member adjusts the position of the limit plate to facilitate fixing the position of the steel arch frame, thereby improving the opening accuracy of the steel arch frame.

[0025] Optionally, the hole opening mechanism includes a mounting rod, a mounting ring and a plasma cutting machine for opening holes in a steel arch frame, the mounting rod is installed on the horizontal frame plate section, and the horizontal frame plate section is provided with a guide groove for the sliding of the mounting rod, and the guide groove is arranged along the length direction of the limit frame; a sliding block is arranged on the side wall of the mounting ring, and a sliding groove for the sliding block is arranged on the mounting rod, and the sliding groove is arranged along the length direction of the mounting rod, and the mounting ring is used to install the cutting head of the plasma cutting machine.

[0026] By adopting the above technical solution, the plasma cutting machine is adjusted, the cutting head of the plasma cutting machine drives the mounting ring to move, the mounting ring drives the sliding block to slide along the sliding groove, and the sliding block drives the mounting rod to slide along the guide groove, so as to realize the horizontal or vertical movement of the cutting head of the plasma cutting machine; the designed hole opening mechanism is convenient for processing holes of different specifications on the steel arch frame.

[0027] In the second aspect, the present application provides a method for opening a small advance conduit of a tunnel steel arch frame, which adopts the following technical solution:

[0028] A method for opening a small advance conduit of a tunnel steel arch frame comprises the following steps:

[0029] S1. Installation of steel arch frame: The steel arch frame is installed in the limit cavity, and the side plate of the steel arch frame is installed in the sliding cavity. The position of the steel arch frame is adjusted so that the starting position of the end of the steel arch frame is flush with the discharge end of the limit frame;

[0030] S2, automatic creeping of the steel arch: starting the driving motor, the driving motor drives the friction wheel to rotate, and the friction wheel drives the steel arch to slide along the sliding cavity, so that the steel arch automatically creeps;

[0031] S3, steel arch opening: after the steel arch crawls to the opening position, it stops moving and brakes, and the opening mechanism opens the steel arch according to the set trajectory;

[0032] S4, drilling at the next position: after the drilling is completed, the drilling mechanism stops, moves to the next position, and repeats step S3;

[0033] S5. Dismantling of steel arch frame.

[0034] By adopting the above technical scheme, the steel arch frame is installed in the limit cavity, and the side plate of the steel arch frame is installed in the sliding cavity, and the position of the steel arch frame is adjusted so that the starting position of the end of the steel arch frame is flush with the discharge end of the limit frame; then the driving motor is adjusted, and the driving motor drives the friction wheel to rotate, and the friction between the friction wheel and the steel arch frame makes the friction wheel drive the steel arch frame to move, and the steel arch frame moves to the opening position; the position of the steel arch frame is fixed by a locking member or a limit member, and then the opening mechanism is adjusted to open the steel arch frame according to the opening trajectory of the steel arch frame; then the position of the steel arch frame is adjusted again, the arch frame moves to the opening position of the second hole, the opening mechanism is adjusted to open the second hole of the steel arch frame, and this operation is repeated to open holes at different positions of the steel arch frame; the designed tunnel steel arch frame has convenient opening of the advanced small duct, which is convenient for the limiting of the steel arch frame and the crawling of the steel arch frame, thereby realizing the opening of holes at different positions of the steel arch frame, and improving the opening efficiency of the steel arch frame.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. The designed tunnel steel arch frame is convenient for opening holes in the small duct ahead of the arch frame. The reverse buckle assembly is convenient for limiting the position of the steel arch frame and crawling the steel arch frame, thereby realizing the opening of holes at different positions of the steel arch frame, and improving the opening efficiency of the steel arch frame;

[0037] 2. The designed automatic hole-opening device for the tunnel steel arch frame advance small guide tube drilling is convenient for driving the distance between the friction wheel and the vertical limit section through the slider and the slide groove, and is convenient for tightening the steel arch frames of different widths, so that the friction wheel drives the movement of steel arch frames of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall structure of the automatic hole-drilling device for the tunnel steel arch frame advance small guide tube of Example 1 of the present application;

[0039] Figure 2 This is a schematic diagram of the structure of the limiting mechanism in the automatic hole-opening device for drilling a small conduit ahead of a tunnel steel arch frame in Example 1 of the present application, and is intended to illustrate the first limiting mechanism;

[0040] Figure 3 This is a schematic diagram of the structure of the limiting mechanism in the automatic hole-drilling device for the advanced small-pipe drilling of the tunnel steel arch frame in Example 1 of the present application, and is intended to illustrate the second limiting mechanism;

[0041] Figure 4 In Example 1 of the present application Figure 3 A cross-sectional view of

[0042] Figure 5 In Example 1 of the present application Figure 4 A magnified schematic diagram of part A.

[0043] Description of reference numerals: 1, base; 2, opening mechanism; 21, guide groove; 22, mounting rod; 23, sliding groove; 24, sliding block; 25, mounting ring; 26, plasma cutting machine; 3, limiting mechanism; 31, limiting frame; 311, horizontal frame plate section; 312, vertical limiting section; 313, limiting cavity; 32, reverse buckle assembly; 321, inner buckle plate; 3211, horizontal connecting portion; 321 2. Vertical connecting part; 3213. Mounting part; 322. Driving motor; 323. Friction wheel; 324. Sliding chamber; 33. Torsion spring; 34. Locking member; 341. First cylinder; 342. Locking plate; 35. Slide groove; 36. Sliding block; 37. Driving member; 371. Double-headed motor; 372. Threaded rod; 38. Limiting member; 381. Second cylinder; 382. Limiting plate; 4. Cover. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-5 This application is described in further detail.

[0045] The embodiments of the present application disclose an automatic hole-opening device and method for drilling a small-conducting hole in advance for a tunnel steel arch frame.

[0046] Example 1

[0047] Reference Figure 1 A tunnel steel arch frame advance small conduit drilling automatic hole opening device comprises a base 1, a hole opening mechanism 2 for opening a hole in the steel arch frame and a limiting mechanism 3 for limiting the position of the steel arch frame; the hole opening mechanism 2 is installed on the base 1; the limiting mechanism 3 comprises a limiting frame 31 and a buckle assembly 32 for driving the steel arch frame to move along the limiting frame 31; in the hole opening process of the steel arch frame, the steel arch frame is first limited by the limiting frame 31, and then the steel arch frame is driven to move by the buckle assembly 32, and after the steel arch frame moves to the specified position, the hole opening mechanism 2 is then used to open a hole in the steel arch frame.

[0048] Reference Figure 1 and Figure 2The limit frame 31 includes a horizontal frame section 311 and two groups of vertical limit sections 312 located on opposite sides of the horizontal frame section 311. The horizontal frame section 311 is fixedly connected to the top walls of the two groups of vertical limit sections 312. The two groups of vertical limit sections 312 form a limit cavity 313 for the sliding of the steel arch frame. In this embodiment, each group of vertical limit sections 312 is provided with 2, and each vertical limit section 312 is welded to the corner position of the horizontal frame section 311. Since the steel arch frame is used for tunnel construction, the steel arch frame is arranged in an arc shape. By leaving a distance between the two vertical limit sections 312 located on the same side of the steel arch frame, the steel arch frame is prevented from getting stuck during the sliding process along the limit cavity 313.

[0049] Reference Figure 1 and Figure 2 The buckle assembly 32 includes a driving motor 322, an inner buckle plate 321 located on each vertical limit segment 312, and a friction wheel 323 located on each inner buckle plate 321; the inner buckle plate 321 is located between the two vertical limit segments 312, and the inner buckle plate 321 includes a horizontal connecting portion 3211, a vertical connecting portion 3212 and a mounting portion 3213, one end of the horizontal connecting portion 3211 is arranged at the end of the vertical limit segment 312 away from the horizontal frame segment 311, and the horizontal connecting portion 3211 The mounting portion 3213 includes an upper horizontal section and a lower horizontal section, which are arranged in parallel, and both are arranged on the vertical connecting portion 3212. In this embodiment, the upper horizontal section is welded to the vertical connecting portion 3212 and the lower horizontal section is welded to the vertical connecting portion 3212. The friction wheel 323 is mounted on the upper horizontal section and the lower horizontal section, and the friction wheel 323 is mounted on the upper horizontal section and the lower horizontal section away from the vertical connecting portion 3212. The upper horizontal section and the friction wheel 323 and the lower horizontal section and the friction wheel 323 are both rotatably connected, and a sliding cavity 324 for the steel arch frame side wall to pass through is formed between the friction wheel 323 and the vertical limit section 312, and the friction wheel 323 extends out of the mounting portion 3213 and abuts against the steel arch frame side wall; the rotating shaft of the friction wheel 323 extends out of one end of the lower horizontal section and is connected to the drive motor 322, and the rotating shaft of the friction wheel 323 is coaxially connected with the output shaft of the drive motor 322 through a coupling, so that the drive motor 3 22 The friction wheel 323 rotates to realize the sliding of the steel arch frame along the sliding cavity 324; in this embodiment, the friction wheel 323 is installed at one end of the discharge end of the limit frame 31, and the movement of the steel arch frame is realized by driving a single friction wheel 323 to rotate, thereby driving the remaining friction wheels 323 to rotate. Since the steel arch frame is arranged in an arc shape, the friction wheels 323 located on the inner and outer sides of the steel arch frame have a speed difference, and the interference caused by the speed difference between the inner and outer sides of the steel arch frame is avoided by a single friction wheel 323.

[0050] Reference Figure 1 and Figure 2In this embodiment, there are two connection modes between the vertical limit section 312 and the horizontal connection part 3211. The first connection mode is that the vertical limit section 312 is hinged with the horizontal connection part 3211, and a torsion spring 33 is installed at the connection between the vertical limit section 312 and the horizontal connection part 3211 for driving the friction wheel 323 to abut against the side wall of the steel arch frame; a locking member 34 for limiting the steel arch frame is provided on the vertical limit section 312, and the locking member 34 includes a first cylinder 341 and a locking plate 342, the first cylinder 341 is installed on the vertical limit section 312, and the first cylinder 341 is fixed to the vertical limit section 312 by bolts, the piston rod of the first cylinder 341 passes through one end of the vertical limit section 312 and is connected to the locking plate 342, and the piston rod of the first cylinder 341 pushes the locking plate 342 to abut against the steel arch frame, so as to realize the position fixation of the steel arch frame.

[0051] Reference Figure 1 and Figure 3 The second connection method is that the vertical limiting section 312 is fixedly connected to the horizontal connection part 3211. In this embodiment, the vertical limiting section 312 is welded to the horizontal connection part 3211, and a slide groove 35 is provided on the horizontal connection part 3211. The slide groove 35 is arranged along the length direction of the horizontal connection part 3211. A slider 36 that slides along the slide groove 35 is installed at the end of the vertical connection part 3212 close to the horizontal connection part 3211. In this embodiment, the vertical connection part 3212 is welded to the slider 36, and a driving member 37 for the slider 36 to slide along the slide groove 35 is provided on the horizontal connection part 3211.

[0052] Reference Figure 4 and Figure 5 There are two ways to set the driving member 37 in the second connection method. The first driving member 37 includes a double-headed motor 371 and two threaded rods 372. The two threaded rods 372 are coaxially installed on the output shaft of the double-headed motor 371, and the threaded rod 372 is coaxially connected to the output shaft of the double-headed motor 371 through a coupling. The two threaded rods 372 are coaxially arranged, and the threads of the two threaded rods 372 are opposite. The threaded rod 372 is arranged along the length direction of the slide groove 35, the threaded rod 372 is rotatably connected to the horizontal connecting part 3211, and the threaded rod 372 is arranged through the slider 36, and the threaded rod 372 is threadedly connected to the slider 36.

[0053] The second driving member 37 includes a bidirectional screw, a rotating motor, a driving bevel gear and a driven bevel gear. The bidirectional screw is arranged along the length direction of the slide groove, and the bidirectional screw is rotatably connected to the horizontal connecting part 3211. The bidirectional screw passes through two relatively arranged sliders, one of which is threadedly connected to the positive thread section of the bidirectional screw, and the other slider is threadedly connected to the negative thread section of the bidirectional screw; the driven bevel gear is sleeved on the bidirectional screw, the driven bevel gear rotates coaxially with the bidirectional screw, and the driven bevel gear is keyed to the bidirectional screw, the output shaft of the rotating motor is coaxially connected to the driving bevel gear through a coupling, and the driving bevel gear is meshed with the driven bevel gear.

[0054] Reference Figure 4 and Figure 5 A limiting member 38 for limiting the position of the steel arch frame is provided on the horizontal frame plate section 311. The limiting member 38 includes a second cylinder 381 and a limiting plate 382. The second cylinder 381 is connected to the horizontal frame plate section 311. The limiting plate 382 is connected to the piston rod of the second cylinder 381. The piston rod of the second cylinder 381 drives the limiting plate 382 to press against the steel arch frame.

[0055] Reference Figure 1 and Figure 2 The hole-opening mechanism 2 includes a mounting rod 22, a mounting ring 25 and a plasma cutter 26 for opening holes in a steel arch frame. The mounting rod 22 is mounted on a horizontal frame plate section 311, and a guide groove 21 for sliding movement of the mounting rod 22 is provided on the horizontal frame plate section 311. The guide groove 21 is arranged along the length direction of the limit frame 31. In this embodiment, the cross-section of the mounting rod 22 is arranged in a ∩ shape; the axial direction of the mounting ring 25 is parallel to the length direction of the vertical limit section 312, and the mounting ring 25 is used to install the cutting head of the plasma cutter 26. A sliding block 24 is arranged on the side wall of the mounting ring 25. In this embodiment, the sliding block 24 is welded to the side of the mounting ring 25 close to the mounting rod 22. A sliding groove 23 for sliding movement of the sliding block 24 is provided on the mounting rod 22, and the sliding groove 23 is arranged along the length direction of the mounting rod 22.

[0056] In the present application, a controller is installed on the limit frame 31, and the connection methods of the controller include three types. The first type is that the controller, the drive motor 322, the first cylinder 341 and the plasma cutting machine 26 are electrically connected, and the drive motor 322, the first cylinder 341 and the plasma cutting machine 26 are electrically opened and closed by the controller; the second type is that the controller, the drive motor 322, the double-headed motor 371, the second cylinder 381 and the plasma cutting machine 26 are electrically connected, and the drive motor 322, the double-headed motor 371, the second cylinder 381 and the plasma cutting machine 26 are electrically opened and closed by the controller; the third type is that the controller, the drive motor 322, the double-headed motor 371, the second cylinder 381 and the plasma cutting machine 26 are electrically connected, and the drive motor 322, the rotating motor, the second cylinder 381 and the plasma cutting machine 26 are electrically opened and closed by the controller.

[0057] The implementation principle of the automatic hole-opening device for the tunnel steel arch frame of the embodiment of the present application is as follows: the steel arch frame is installed on the limit frame 31, and the side plate of the steel arch frame is installed in the sliding cavity 324, the position of the steel arch frame is adjusted so that the starting position of the end of the steel arch frame is flush with the discharge end of the limit frame 31, the drive motor 322 is adjusted, and the drive motor 322 drives the friction wheel 323 to rotate, and the friction between the friction wheel 323 and the steel arch frame makes the friction wheel 323 drive the steel arch frame to move, and the steel arch frame moves to the hole-opening position, and the adjustment is performed. Plasma cutting machine 26, the cutting head of the plasma cutting machine 26 drives the mounting ring 25 to move, the mounting ring 25 drives the sliding block 24 to slide along the sliding groove 23, the sliding block 24 drives the mounting rod 22 to slide along the guide groove 21, so as to realize the horizontal or vertical movement of the cutting head of the plasma cutting machine 26 to realize the opening of the steel arch frame, and then adjust the position of the steel arch frame again, the arch frame moves to the opening position of the second hole, adjust the opening mechanism 2, realize the opening of the second hole of the steel arch frame, repeat this operation, and realize the opening of holes in different positions of the steel arch frame.

[0058] Example 2

[0059] A method for opening a small advance conduit of a tunnel steel arch frame comprises the following steps:

[0060] S1. Installation of the steel arch frame: The steel arch frame is installed in the limiting cavity 313, and the side plate of the steel arch frame is installed in the sliding cavity 324. The position of the steel arch frame is adjusted so that the starting position of the end of the steel arch frame is flush with the discharge end of the limiting frame 31;

[0061] S2, automatic creeping of the steel arch: starting the driving motor 322, the driving motor 322 drives the friction wheel 323 to rotate, and the friction wheel 323 drives the steel arch to slide along the sliding cavity 324, so that the steel arch automatically creeps;

[0062] S3, opening a hole in the steel arch: After the steel arch crawls to the opening position, it stops moving and brakes, and the plasma cutting machine 26 drives the mounting ring 25 to move according to the set trajectory, thereby realizing the opening of the steel arch;

[0063] S4, drilling a hole at the next position: after the drilling is completed, the plasma cutting machine 26 stops working, moves to the next position, and repeats step S3;

[0064] S5. Dismantle the steel arch frame and clean up the waste.

[0065] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic hole-drilling device for a tunnel steel arch frame with a small-pipe advance drill hole, characterized in that: It comprises a base (1), a hole-opening mechanism (2) for opening a hole in a steel arch frame, and a position-limiting mechanism (3) for limiting the position of the steel arch frame; The hole opening mechanism (2) is installed on the base (1); The limiting mechanism (3) comprises a limiting frame (31) and a buckle assembly (32) for driving the steel arch frame to move along the limiting frame (31); The limiting frame (31) comprises a horizontal frame plate section (311) and two groups of vertical limiting sections (312) located on opposite sides of the horizontal frame plate section (311); the horizontal frame plate section (311) is fixedly connected to the top walls of the two groups of vertical limiting sections (312); the two groups of vertical limiting sections (312) form a limiting cavity (313) for sliding of the steel arch frame; The buckle assembly (32) comprises a driving motor (322), an inner buckle plate (321) located on each of the vertical limit segments (312), and a friction wheel (323) located on each of the inner buckle plates (321); the inner buckle plate (321) is arranged at one end of the vertical limit segment (312) away from the horizontal frame segment (311), and the inner buckle plate (321) is located between the two vertical limit segments (312); the friction wheel (323) is rotatably connected to the inner buckle plate (321), and the friction wheel (323) abuts against the inner wall of the steel arch frame; a sliding cavity (324) for the side wall of the steel arch frame to pass through is formed between the friction wheel (323) and the vertical limit segment (312); the driving motor (322) is used to drive the friction wheel (323) to rotate; The inner buckle plate (321) comprises a horizontal connecting portion (3211), a vertical connecting portion (3212) and a mounting portion (3213); one end of the horizontal connecting portion (3211) is arranged on the vertical limiting section (312) away from the horizontal frame section (311); the horizontal connecting portion (3211) is connected away from the vertical connecting portion (3212); the mounting portion (3213) is arranged on the vertical connecting portion (3212); the friction wheel (323) and the driving motor (322) are both mounted on the mounting portion (3213), and the friction wheel (323) extends out of the mounting portion (3213) to abut against the side wall of the steel arch frame; The vertical limiting section (312) is hinged to the horizontal connecting portion (3211), and a torsion spring (33) is provided at the connection between the vertical limiting section (312) and the horizontal connecting portion (3211) for driving the friction wheel (323) to abut against the side wall of the steel arch frame; The vertical limiting section (312) is provided with a locking member (34) for limiting the position of the steel arch frame. The locking member (34) includes a first cylinder (341) and a locking plate (342). The first cylinder (341) is installed on the vertical limiting section (312), and a piston rod of the first cylinder (341) passes through one end of the vertical limiting section (312) and is connected to the locking plate (342). The piston rod of the first cylinder (341) pushes the locking plate (342) to press against the steel arch frame. The vertical limiting section (312) is fixedly connected to the horizontal connecting portion (3211); a slide groove (35) is provided on the horizontal connecting portion (3211); the slide groove (35) is arranged along the length direction of the horizontal connecting portion (3211); a slider (36) that slides along the slide groove (35) is installed at the end of the vertical connecting portion (3212) close to the horizontal connecting portion (3211); and a driving member (37) for the slider (36) to slide along the slide groove (35) is provided on the horizontal connecting portion (3211); The driving member (37) comprises a double-headed motor (371) and two threaded rods (372), the two threaded rods (372) are coaxially mounted on the output shaft of the double-headed motor (371), the threads of the two threaded rods (372) are opposite in direction, and the threaded rods (372) are arranged along the length direction of the slide groove (35), the threaded rods (372) are rotatably connected to the horizontal connecting portion (3211), and the threaded rods (372) are arranged to pass through the slider (36), and the threaded rods (372) are threadedly connected to the slider (36); The hole-opening mechanism (2) comprises a mounting rod (22), a mounting ring (25) and a plasma cutting machine (26) for opening holes in a steel arch frame. The mounting rod (22) is mounted on the horizontal frame plate section (311), and a guide groove (21) for sliding movement of the mounting rod (22) is provided on the horizontal frame plate section (311), and the guide groove (21) is arranged along the length direction of the limit frame (31); a sliding block (24) is arranged on the side wall of the mounting ring (25), and a sliding groove (23) for sliding movement of the sliding block (24) is provided on the mounting rod (22), and the sliding groove (23) is arranged along the length direction of the mounting rod (22), and the mounting ring (25) is used to install the cutting head of the plasma cutting machine (26).

2. The automatic hole-drilling device for advanced small-pipe drilling of a tunnel steel arch according to claim 1 is characterized in that: The horizontal frame section (311) is provided with a limiting member (38) for limiting the position of the steel arch frame. The limiting member (38) includes a second cylinder (381) and a limiting plate (382). The second cylinder (381) is connected to the horizontal frame section (311), and the limiting plate (382) is connected to the piston rod of the second cylinder (381). The piston rod of the second cylinder (381) drives the limiting plate (382) to press against the steel arch frame.

3. The method for opening a hole for a tunnel steel arch advance small conduit according to any one of claims 1-2, characterized in that: The following steps are involved: S1. Installation of the steel arch frame: The steel arch frame is installed in the limiting cavity (313), and the side plate of the steel arch frame is installed in the sliding cavity (324). The position of the steel arch frame is adjusted so that the starting position of the end of the steel arch frame is flush with the discharge end of the limiting frame (31); S2, automatic creeping of the steel arch: starting the driving motor (322), the driving motor (322) drives the friction wheel (323) to rotate, and the friction wheel (323) drives the steel arch to slide along the sliding cavity (324), so that the steel arch automatically creeps; S3, opening a hole in the steel arch: After the steel arch crawls to the hole opening position, it stops moving and brakes, and the hole opening mechanism (2) opens a hole in the steel arch according to the set trajectory; S4, drilling a hole at the next position: after the drilling is completed, the drilling mechanism (2) stops, moves to the next position, and repeats step S3; S5. Dismantling of steel arch frame.

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