A tunneling machine support and propulsion mechanism and method of operation thereof

Abstract

The application discloses a tunneling machine supporting and propelling mechanism and a working method thereof, which comprises a first ring beam, a second ring beam, a supporting mechanism, a sliding rail, a center cylinder mechanism, a propelling oil cylinder and a sliding connecting block. The upper end of the sliding rail is fixedly connected with the lower bottom surface of the first ring beam, and the lower end of the sliding rail is fixedly connected with the upper bottom surface of the second ring beam. The supporting mechanism is arranged along the circumferential outer wall of the first ring beam and the second ring beam. The center cylinder mechanism is sleeved in the inner ring of the first ring beam and the second ring beam. The sliding connecting block is more than two, one end of the sliding connecting block is fixedly connected with the upper lateral wall surface of the center cylinder mechanism, the other end of the sliding connecting block is sleeved on the sliding rail, at least one sliding connecting block is fixedly connected with the outer cylinder of the propelling oil cylinder, and the piston rod end of the propelling oil cylinder is fixedly connected with the lower bottom surface of the first ring beam. The tunneling machine supporting and propelling mechanism can realize double-layer supporting through the design of the double-layer ring beam, the sliding connecting block is arranged on the center cylinder mechanism, and the tunneling machine can be axially propelled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of roadway and shaft driving, in particular to a driving machine supporting and advancing mechanism and a working method thereof. BACKGROUND

[0002] The driving machine is the main equipment for mechanized driving of roadway and shaft, and the main shaft thereof is extended to provide strong rotary power to drive the drill bit or cutting arm to break rock under the stable support of the machine body.

[0003] The supporting result of the driving machine in the prior art is mostly single-layer, and the strong rotary power of the main shaft cannot form stable support, which affects the drilling effect. Meanwhile, the supporting and advancing mechanism has the problems of large volume, large weight, and inconvenience in installation and disassembly. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a driving machine supporting and advancing mechanism with double-layer support, axial advancement, and light weight, small volume, and detachable components, and a working method thereof.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] A driving machine supporting and advancing mechanism comprises a first ring beam, a second ring beam, a supporting mechanism, a slide rail, a center tube mechanism, a pushing oil cylinder, and a slide connecting block. The upper end of the slide rail is fixedly connected with the lower bottom surface of the first ring beam, and the lower end of the slide rail is fixedly connected with the upper bottom surface of the second ring beam. The supporting mechanism is arranged along the circumferential outer wall of the first ring beam and the second ring beam. The center tube mechanism is sleeved in the inner ring of the first ring beam and the second ring beam. The slide connecting block is two or more, one end of the slide connecting block is fixedly connected with the upper lateral wall surface of the center tube mechanism, the other end of the slide connecting block is sleeved on the slide rail, at least one slide connecting block is fixedly connected with the outer cylinder of the pushing oil cylinder, and the piston rod end of the pushing oil cylinder is fixedly connected with the lower bottom surface of the first ring beam.

[0007] The first ring beam and the second ring beam are similar in structure and are both frame structures; the first ring beam and the second ring beam each comprise a ring beam body, a track seat and a support seat, the ring beam body is a cylindrical frame structure, two or more track seats are uniformly arranged on the upper bottom surface of the ring beam body of the second ring beam and on the lower bottom surface of the first ring beam in the circumferential direction, the track seats on the lower bottom surface of the first ring beam and the track seats of the second ring beam are respectively fixedly connected with the upper end and the lower end of the slide rail; two or more through holes are uniformly formed on the side wall surface of the ring beam body, the support seat is fixedly installed in the through hole, a support positioning groove is formed on the upper and lower bottom surfaces of the support seat, and the support mechanism is installed in the support seat through the support positioning groove.

[0008] The second ring beam comprises a ring beam body, a track seat and a support seat, the ring beam body is a cylindrical frame structure, two or more track seats are uniformly arranged on the upper bottom surface of the ring beam body in the circumferential direction, the track seats on the lower bottom surface of the first ring beam and the track seats of the second ring beam are respectively fixedly connected with the upper end and the lower end of the slide rail, two or more through holes are uniformly formed on the side wall surface of the ring beam body, the support seat is fixedly installed in the through hole, a support positioning groove is formed on the upper and lower bottom surfaces of the support seat, and the support mechanism is installed in the support seat through the support positioning groove.

[0009] The second ring beam comprises a ring beam body, a track seat and a support seat, the ring beam body is a cylindrical frame structure, two or more track seats are uniformly arranged on the upper bottom surface of the ring beam body in the circumferential direction, the track seats on the lower bottom surface of the first ring beam and the track seats of the second ring beam are respectively fixedly connected with the upper end and the lower end of the slide rail, two or more through holes are uniformly formed on the side wall surface of the ring beam body, the support seat is fixedly installed in the through hole, a support positioning groove is formed on the upper and lower bottom surfaces of the support seat, and the support mechanism is installed in the support seat through the support positioning groove.

[0010] The second ring beam comprises a ring beam body, a track seat and a support seat, the ring beam body is a cylindrical frame structure, two or more track seats are uniformly arranged on the upper bottom surface of the ring beam body in the circumferential direction, the track seats on the lower bottom surface of the first ring beam and the track seats of the second ring beam are respectively fixedly connected with the upper end and the lower end of the slide rail, two or more through holes are uniformly formed on the side wall surface of the ring beam body, the support seat is fixedly installed in the through hole, a support positioning groove is formed on the upper and lower bottom surfaces of the support seat, and the support mechanism is installed in the support seat through the support positioning groove.

[0011] The second ring beam comprises a ring beam body, a track seat and a support seat, the ring beam body is a cylindrical frame structure, two or more track seats are uniformly arranged on the upper bottom surface of the ring beam body in the circumferential direction, the track seats on the lower bottom surface of the first ring beam and the track seats of the second ring beam are respectively fixedly connected with the upper end and the lower end of the slide rail, two or more through holes are uniformly formed on the side wall surface of the ring beam body, the support seat is fixedly installed in the through hole, a support positioning groove is formed on the upper and lower bottom surfaces of the support seat, and the support mechanism is installed in the support seat through the support positioning groove.

[0012] The tunneling machine supporting and advancing mechanism has four groups of slide rails and supporting mechanisms, and the included angle between the slide rails and the supporting mechanisms adjacent to each other relative to the center of the first ring beam or the second ring beam is 45°.

[0013] The working method of the tunneling machine supporting and advancing mechanism comprises the following steps:

[0014] (A) Double-layer stable support: the supporting mechanisms of the first ring beam and the second ring beam are pressed on the shaft wall to form stable support for the tunneling machine.

[0015] (B) Axial advancement: the advancing oil cylinder drives the sliding connecting blocks to extend and retract in the axial direction, and drives the center cylinder mechanism to advance.

[0016] In step (A) of the working method of the tunneling machine supporting and advancing mechanism:

[0017] During the supporting process, the double telescopic oil cylinders on the first ring beam and the second ring beam are started, the double telescopic oil cylinder piston rods are extended to push the support plates, and the outer telescopic box and the middle telescopic box are sequentially extended to the outer box to press the support plates on the shaft wall to form stable support for the tunneling machine.

[0018] In step (B) of the working method of the tunneling machine supporting and advancing mechanism, the axial advancement of the tunneling machine comprises the following steps:

[0019] The advancing oil cylinder is started, the piston rod end of the advancing oil cylinder is extended and retracted, the first sliding connecting block and the second sliding connecting block are pulled to move in the axial direction, the circular hole slide way of the first sliding connecting block and the second sliding connecting block slides in the axial direction on the slide rail, and the first sliding connecting block and the second sliding connecting block drive the center cylinder mechanism to advance or retract in the axial direction.

[0020] The technical scheme of the present application has the following beneficial technical effects:

[0021] 1. The tunneling machine supporting and advancing mechanism can realize double-layer support and axial advancement of the tunneling machine.

[0022] 2. The first ring beam and the second ring beam are both cylindrical frame structures, which are light in weight and convenient to install and disassemble. Four supporting seats are uniformly arranged along the circumference of the first ring beam and the second ring beam, which facilitates the installation and disassembly of the supporting mechanisms.

[0023] 3. The first ring beam and the second ring beam have similar structures, differing only in the position of the corresponding propulsion cylinder. The bottom surface of the main body of the first ring beam is provided with a piston rod mounting seat at the position corresponding to the piston rod end of the propulsion cylinder, for connecting with the piston rod end of the propulsion cylinder. The bottom surface of the main body of the second ring beam is provided with a propulsion cylinder hole at the position corresponding to the outer cylinder of the propulsion cylinder, and the diameter of the propulsion cylinder hole is larger than the outer diameter of the outer cylinder of the propulsion cylinder, for accommodating the outer cylinder part of the propulsion cylinder when the propulsion center cylinder mechanism moves.

[0024] 4. In the support mechanism, cylinder seats and double telescopic cylinders are arranged on both sides of the outer box, which facilitates stable support of the support mechanism from both sides. This can resist the torque and pressure from the drill bit and the central cylinder mechanism, so that the tunneling machine can operate stably as a whole. At the same time, the cylinder seats and double telescopic cylinders are connected by pins, and the outer telescopic box and the support plate are connected by ball joints, which can facilitate the rotation of the support plate and achieve stable support for inclined well walls or rough well walls.

[0025] 5. First and second sliding connecting blocks are respectively set and evenly arranged along the circumference of the central cylinder. That is, the two first sliding connecting blocks and the two second sliding connecting blocks are arranged perpendicularly to each other. The first sliding connecting blocks are set with stacked propulsion cylinder mounting holes, thereby fixing the outer cylinder of the propulsion cylinder in the propulsion cylinder mounting holes, improving the stability and symmetry of the fixed cylinder installation. The extension and retraction of the propulsion cylinder realizes the sliding of the circular hole slide on the slide rail, realizing the propulsion and retraction of the central cylinder. Attached Figure Description

[0026] Figure 1 A three-dimensional structural schematic diagram of the tunneling machine support and propulsion mechanism of the present invention;

[0027] Figure 2 Another three-dimensional structural schematic diagram of the tunneling machine support and propulsion mechanism of the present invention;

[0028] Figure 3 The schematic diagram of the second ring beam of the tunneling machine support and propulsion mechanism of the present invention;

[0029] Figure 4 A schematic cross-sectional view of the second ring beam of the tunneling machine support and propulsion mechanism of the present invention;

[0030] Figure 5 A schematic diagram of the structure of the central cylinder and sliding connecting block of the tunneling machine support and propulsion mechanism of the present invention;

[0031] Figure 6 A schematic diagram of the support mechanism of the tunneling machine support and propulsion mechanism of the present invention;

[0032] Figure 7 A cross-sectional structural diagram of the support mechanism of the tunneling machine support and propulsion mechanism of the present invention.

[0033] The reference signs in the drawings are as follows: 1 - first ring beam; 2 - support mechanism; 3 - slide rail; 4 - center tube mechanism; 5 - pushing oil cylinder; 6 - second ring beam; 7 - sliding connecting block;

[0034] 201 - outer box; 202 - oil cylinder seat; 203 - pin shaft; 204 - double telescopic oil cylinder; 205 - middle telescopic box; 206 - outer telescopic box; 207 - support plate; 401 - center tube; 402 - connecting flange;

[0035] 601 - ring beam body; 602 - rail seat; 603 - support seat; 604 - support positioning groove; 605 - pushing cylinder hole; 701 - first sliding connecting block; 702 - second sliding connecting block; 703 - round hole slide; 704 - pushing oil cylinder mounting hole. DETAILED DESCRIPTION

[0036] The tunneling machine support and pushing mechanism of the present application comprises a first ring beam 1, a second ring beam 6, a support mechanism 2, a slide rail 3, a center tube mechanism 4, a pushing oil cylinder 5 and a sliding connecting block 7; the upper end of the slide rail 3 is fixedly connected with the lower bottom surface of the first ring beam 1, and the lower end of the slide rail 3 is fixedly connected with the upper bottom surface of the second ring beam 6; the support mechanism 2 is arranged along the circumferential outer wall of the first ring beam 1 and the second ring beam 6; the center tube mechanism 4 is sleeved in the inner ring of the first ring beam 1 and the second ring beam 6; the sliding connecting block 7 is two or more, one end of the sliding connecting block 7 is fixedly connected with the upper side wall surface of the center tube mechanism 4, the other end of the sliding connecting block 7 is sleeved on the slide rail 3, at least one sliding connecting block 7 is fixedly connected with the outer tube of the pushing oil cylinder 5, and the piston rod end of the pushing oil cylinder 5 is fixedly connected with the lower bottom surface of the first ring beam 1.

[0037] In the present embodiment, the support mechanism 2 and the slide rail 3 are both 4 groups, the support mechanism 2 is arranged along the circumferential outer wall of the first ring beam 1 and the second ring beam 6, and the included angle between the adjacent slide rail 3 and the support mechanism 2 relative to the center of the first ring beam 1 or the second ring beam 6 is 45°.

[0038] The first ring beam 1 and the second ring beam 6 are similar in structure and are both frame structures; the first ring beam 1 and the second ring beam 6 each include a ring beam body 601, a track seat 602 and a support seat 603, the ring beam body 601 is a cylindrical frame structure, four track seats 602 are uniformly arranged on the upper bottom surface of the ring beam body 601 of the second ring beam 6 and on the lower bottom surface of the first ring beam 1 in the circumferential direction, the track seats 602 on the lower bottom surface of the first ring beam 1 and the track seats 602 of the second ring beam 6 are fixedly connected with the upper end and the lower end of the slide rail 3 respectively; four through holes are uniformly formed on the side wall surface of the ring beam body 601, the support seat 603 is fixedly installed in the through hole, and a support positioning groove 604 is formed at the upper and lower bottom surfaces of the support seat 603, and the support mechanism 2 is installed in the support seat 603 through the support positioning groove 604.

[0039] The first ring beam and the second ring beam are similar in structure, only different in the position corresponding to the advancing oil cylinder, a advancing cylinder hole 605 is formed on the ring beam body 601 of the second ring beam 6 at the position corresponding to the outer cylinder of the advancing oil cylinder 5, and the diameter of the advancing cylinder hole 605 is greater than the outer diameter of the outer cylinder of the advancing oil cylinder 5, for accommodating the outer cylinder part of the advancing oil cylinder when the advancing center cylinder mechanism moves. A piston rod mounting seat is arranged on the ring beam body 601 of the first ring beam at the position corresponding to the piston rod end of the advancing oil cylinder 5, the piston rod mounting seat is fixedly connected with the piston rod end of the advancing oil cylinder 5, and the piston rod mounting seat is used for connecting with the piston rod end of the advancing oil cylinder.

[0040] The center cylinder mechanism 4 includes a center cylinder body 402 and a connecting flange 401; the center cylinder body 402 is a hollow structure, and the lower end of the center cylinder body 402 is provided with the connecting flange 401. The connecting flange 401 at the lower end of the center cylinder facilitates the connection of the support and advancing mechanism of the application with the tunneling machine.

[0041] The slide connection block 7 includes first slide connection blocks 701 and second slide connection blocks 702, and there are two first slide connection blocks 701 and two second slide connection blocks 702, and the first slide connection blocks 701 and the second slide connection blocks 702 are uniformly and staggeredly arranged in the circumferential direction of the center cylinder body 402; one end of each of the first slide connection blocks 701 and the second slide connection blocks 702 is fixedly connected with the upper side wall surface of the center cylinder body 402. The vertically staggered first slide connection blocks 701 and the second slide connection blocks 702 can realize stable advancing and withdrawing of the center cylinder mechanism driven by the advancing oil cylinder.

[0042] The other end of the first sliding connection block 701 and the second sliding connection block 702 is provided with a round hole slide 703, the round hole slide 703 is sleeved on the outer side wall of the slide rail 3; the round hole slide 703 of the first sliding connection block 701 is provided with a push oil cylinder mounting hole 704 on both sides, and the outer cylinder of the push oil cylinder 5 is fixedly installed in the push oil cylinder mounting hole 704.

[0043] The first sliding connection block 701 and the second sliding connection block 702 are slightly different in structure, and the first sliding connection block is provided with a push oil cylinder mounting hole 704 on both sides of the round hole slide 703, and the outer cylinder of the push oil cylinder 5 is installed in the push oil cylinder mounting hole, so that the stability and symmetry of the fixed oil cylinder installation are improved.

[0044] The support mechanism 2 includes an outer box 201, an oil cylinder seat 202, a double telescopic oil cylinder 204 and a support plate 207, the oil cylinder seat 202 is fixedly connected to the both sides of the outer box 201 in a symmetrical manner, the oil cylinder seat 202 is hinged to the cylinder barrel end of the double telescopic oil cylinder 204 through a pin shaft 203, the piston rod end of the double telescopic oil cylinder 204 is ball-hinged to the inner side wall of the support plate 207, and the outer side wall of the support plate 207 is provided with a small protrusion; a middle telescopic box 205 is arranged in the outer box 201, an outer telescopic box 206 is arranged in the middle telescopic box 205, and the extending end of the outer telescopic box 206 is ball-hinged to the inner side wall of the support plate 207; the outer box 201 and the oil cylinder seat 202 are inserted into the support seat 603 through a support positioning groove 604. The oil cylinder seat and the double telescopic oil cylinder are arranged on the both sides of the outer box respectively, so that stable support to the support mechanism can be formed from both sides, the torque and pressure from the drill bit and the central cylinder mechanism can be resisted, the whole boring machine can be stably operated, the double telescopic oil cylinder and the oil cylinder seat are connected through the pin shaft, and the outer telescopic box and the support plate are ball-hinged, so that the rotation of the support plate can be facilitated, and stable support to the inclined well wall or the rough well wall can be realized.

[0045] The boring machine support and pushing mechanism of the boring machine can realize double-layer stable support and axial pushing of the boring machine, and the specific working method is as follows:

[0046] A, double-layer stable support: the support mechanism 2 of the first ring beam 1 and the second ring beam 6 is pressed on the well wall to form stable support to the boring machine;

[0047] During the support process, the double telescopic oil cylinder 204 on the first ring beam 1 and the second ring beam 6 is started, the piston rod of the double telescopic oil cylinder 204 is extended to push the support plate 207, and the outer telescopic box 206 and the middle telescopic box 205 are sequentially extended out of the outer box 201 to press the support plate 207 on the well wall, so that stable support to the boring machine is formed.

[0048] B, axial propulsion: the propulsion oil cylinder 5 drives the sliding connection block 7 to extend and retract along the axial direction, and drives the center cylinder mechanism 4 to advance.

[0049] The propulsion oil cylinder 5 is started, the piston rod end of the propulsion oil cylinder 5 is extended and retracted, the first sliding connection block 701 and the second sliding connection block 702 are pulled to move along the axial direction, the circular hole slide 703 of the first sliding connection block 701 and the second sliding connection block 702 slides along the axial direction on the slide rail 3, and the first sliding connection block 701 and the second sliding connection block 702 drive the center cylinder mechanism 4 to advance or retreat along the axial direction.

[0050] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the patent application claims.

Claims

1. A support and propulsion mechanism for a heading machine, characterized in that, The application relates to a first ring beam (1), a second ring beam (6), a supporting mechanism (2), a slide rail (3), a center cylinder mechanism (4), a pushing oil cylinder (5) and a slide connecting block (7); the upper end of the slide rail (3) is fixedly connected with the lower bottom surface of the first ring beam (1), and the lower end of the slide rail (3) is fixedly connected with the upper bottom surface of the second ring beam (6); the supporting mechanism (2) is arranged along the circumferential outer wall of the first ring beam (1) and the second ring beam (6); the center cylinder mechanism (4) is sleeved in the inner ring of the first ring beam (1) and the second ring beam (6); the slide connecting block (7) is more than two, one end of the slide connecting block (7) is fixedly connected with the upper lateral wall surface of the center cylinder mechanism (4), the other end of the slide connecting block (7) is sleeved on the slide rail (3), at least one slide connecting block (7) is fixedly connected with the outer cylinder of the pushing oil cylinder (5), and the piston rod end of the pushing oil cylinder (5) is fixedly connected with the lower bottom surface of the first ring beam (1). The first ring beam (1) and the second ring beam (6) are similar in structure and are both frame structures; the first ring beam (1) and the second ring beam (6) both comprise a ring beam main body (601), a rail seat (602) and a supporting seat (603); the ring beam main body (601) is a cylindrical frame structure, more than two rail seats (602) are uniformly arranged on the upper bottom surface of the ring beam main body (601) of the second ring beam (6) and on the lower bottom surface of the first ring beam (1) in the circumferential direction, and the rail seats (602) on the lower bottom surface of the first ring beam (1) and the rail seats (602) on the second ring beam (6) are fixedly connected with the upper end and the lower end of the slide rail (3) respectively; more than two through holes are uniformly arranged on the lateral wall surface of the ring beam main body (601), the supporting seat (603) is fixedly installed in the through holes, supporting positioning grooves (604) are arranged on the upper and lower bottom surfaces of the supporting seat (603), and the supporting mechanism (2) is installed in the supporting seat (603) through the supporting positioning grooves (604); A pushing cylinder hole (605) is arranged on the ring beam main body (601) of the second ring beam (6) at a position corresponding to the outer cylinder of the pushing oil cylinder (5), and the diameter of the pushing cylinder hole (605) is larger than the outer diameter of the outer cylinder of the pushing oil cylinder (5); a piston rod mounting seat is arranged on the ring beam main body (601) of the first ring beam at a position corresponding to the piston rod end of the pushing oil cylinder (5), and the piston rod mounting seat is fixedly connected with the piston rod end of the pushing oil cylinder (5).

2. A support and propulsion mechanism for a heading machine according to claim 1, characterized in that, The center cylinder mechanism (4) comprises a center cylinder body (402) and a connecting flange (401); the center cylinder body (402) is a hollow structure, and the lower end of the center cylinder body (402) is provided with the connecting flange (401).

3. A support and propulsion mechanism for a heading machine according to claim 2, wherein, The sliding connection block (7) comprises a first sliding connection block (701) and a second sliding connection block (702), the first sliding connection block (701) and the second sliding connection block (702) are two respectively, and the first sliding connection block (701) and the second sliding connection block (702) are uniformly staggered along the circumferential direction of the center cylinder (402); one end of the first sliding connection block (701) and the second sliding connection block (702) is fixedly connected with the upper side wall surface of the center cylinder (402), and the other end of the first sliding connection block (701) and the second sliding connection block (702) is provided with a circular hole sliding way (703), the circular hole sliding way (703) is sleeved on the outer side wall of the sliding rail (3); the circular hole sliding way (703) of the first sliding connection block (701) is provided with a propelling oil cylinder mounting hole (704) on both sides, and the outer cylinder of the propelling oil cylinder (5) is fixedly installed in the propelling oil cylinder mounting hole (704).

4. A support and propulsion mechanism for a heading machine according to claim 1, characterized in that, The support mechanism (2) comprises an outer box (201), an oil cylinder seat (202), a double telescopic oil cylinder (204) and a support plate (207), the oil cylinder seat (202) is fixedly connected with the outer box (201) on both sides, the oil cylinder seat (202) is hinged with the cylinder barrel end of the double telescopic oil cylinder (204) through a pin shaft (203), the piston rod end of the double telescopic oil cylinder (204) is ball-hinged with the inner side wall of the support plate (207), and the outer side wall of the support plate (207) is provided with a small protrusion; the outer box (201) is provided with a middle telescopic box (205) inside, the middle telescopic box (205) is provided with an outer telescopic box (206) inside, and the extending end of the outer telescopic box (206) is ball-hinged with the inner side wall of the support plate (207); the outer box (201) and the oil cylinder seat (202) are inserted into the support seat (603) through a support positioning groove (604).

5. A support and propulsion mechanism for a heading machine according to claim 1, wherein, The sliding rail (3) and the support mechanism (2) are four groups respectively, and the included angle of the adjacent sliding rail (3) and the support mechanism (2) relative to the center of the first ring beam (1) or the second ring beam (6) is 45°.

6. A method of operating a support and propulsion mechanism of a heading machine according to any one of claims 1-5, characterized in that, It comprises: (A) double-layer stable support: the support mechanism (2) of the first ring beam (1) and the second ring beam (6) is pressed on the well wall, forming a stable support for the heading machine; (B) axial propulsion: the propelling oil cylinder (5) drives the sliding connection block (7) to extend in the axial direction, and drives the center cylinder mechanism (4) to advance.

7. A method of operating a support and propulsion mechanism of a heading machine according to claim 6, characterized in that, In step (A): in the supporting process, the double telescopic oil cylinder (204) on the first ring beam (1) and the second ring beam (6) is started, the piston rod of the double telescopic oil cylinder (204) is extended to push the support plate (207), at the same time, the outer telescopic box (206) and the middle telescopic box (205) are sequentially extended out of the outer box (201), the support plate (207) is pressed on the well wall, forming a stable support for the heading machine.

8. The method of claim 6, wherein, In step (B), the axial advancing of the tunneling machine comprises the following steps: starting the advancing oil cylinder (5), extending and retracting the piston rod end of the advancing oil cylinder (5), pulling the first sliding connecting block (701) and the second sliding connecting block (702) to move axially, the circular hole sliding way (703) of the first sliding connecting block (701) and the second sliding connecting block (702) sliding axially on the sliding rail (3), and the first sliding connecting block (701) and the second sliding connecting block (702) driving the central cylinder mechanism (4) to advance or retract axially.

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