Cantilever heading machine

Abstract

The utility model relates to the technical field of tunneling equipment with a drilling or cutting tool, in particular to a cantilever tunneling machine. The cantilever tunneling machine comprises a machine body and a cantilever rock breaking mechanism, a swing base is arranged on the machine body, the cantilever rock breaking mechanism comprises a cantilever and a rock breaking head arranged at the tail end of the cantilever, and a cantilever base is arranged at the end, away from the rock breaking head, of the cantilever. The cantilever base is rotatably installed on the swing base and provided with a direction adjusting driving mechanism used for driving the cantilever base to rotate, the rotating axis of the cantilever base is perpendicular to the swing axis of the swing base, and when the cantilever base rotates relative to the swing base, the cantilever rock breaking mechanism rotates so as to adjust the rolling operation direction of the rock breaking head on the tunnel face. And the rolling direction of the rock breaking head can be adjusted to a state, such as a vertical state, adapting to the texture direction of the rock, so that the rock breaking head can have a better shearing and rock breaking effect on the rock, and the excavation efficiency of the cantilever heading machine can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the tunneling equipment technology field of the drilling or cutting tool, specifically relates to a kind of boom tunneling machine. BACKGROUND

[0002] Boom tunneling machine is a kind of combined unit capable of realizing cutting, loading and transporting, self-walking and spraying dust, and is developed rapidly in full-rock roadway and semi-coal-rock roadway with relatively low hardness.

[0003] The basic structure of the existing boom tunneling machine can be seen from the double-wheel boom tunneling machine disclosed in the Chinese utility model patent with the authorized announcement number CN219220426U, which comprises a machine body, a cutting mechanism is arranged at the front end of the machine body, the cutting mechanism is rotatably connected with the machine body, the cutting mechanism comprises a mechanical arm and a cutting head, a plurality of cutting teeth are arranged on the outer wall of the cutting head, the cutting head is a wheel-type cutting head, the mechanical arm is arranged at the front end of the machine body, the cutting head is arranged at the end of the mechanical arm away from the machine body, a rotary mechanism is arranged between the machine body and the cutting mechanism, the cutting mechanism is rotatably connected with the machine body through the rotary mechanism, the rotary mechanism can make the cutting mechanism rotate horizontally within a certain range with the rotary mechanism as the axis, an extension rod is arranged between the rotary mechanism and the cutting mechanism, one end of the extension rod is connected with the rotary mechanism, and the other end of the extension rod is connected with the cutting mechanism, the extension rod can make the cutting mechanism swing vertically within a certain range, so that the cutting mechanism can perform rock breaking operation in the horizontal and vertical directions. Among them, the cutting head constitutes a rock breaking head, the cutting mechanism is used to constitute a boom rock breaking mechanism, the mechanical arm constitutes a boom, the rotary mechanism has a swing base with a rotary axis extending in the vertical direction, the swing base can swing horizontally relative to the machine body, and the end of the boom away from the rock breaking head is hinged to the swing base with a horizontal hinge axis, so that the boom can swing vertically.

[0004] The boom tunneling machine described above rolls the rock breaking head up and down on the tunnel face to break rocks under the drive of the boom, and the rolling operation direction of the rock breaking head is certain. For some tunnels, the rock section has a specific texture direction. When the conventional boom tunneling machine described above is used for excavation operation, the rolling direction of the rock breaking head will follow the texture direction of the rock section, which will reduce the shearing effect of the rock breaking head on the rock section and reduce the excavation efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a boom tunneling machine to solve the problem that the rock breaking head of the current boom tunneling machine has low excavation efficiency for rock with specific texture direction.

[0006] The technical scheme of the boom tunneling machine of the utility model is as follows:

[0007] A kind of boom tunneling machine, including machine body and cantilever rock breaking mechanism, machine body is equipped with swing base, cantilever rock breaking mechanism includes cantilever and is equipped in the rock breaking head of cantilever tip, the end of cantilever away from rock breaking head is equipped with cantilever base, cantilever base is rotatably installed on swing base and is equipped with for driving cantilever base rotation direction adjusting drive mechanism, the rotation axis of cantilever base is perpendicular to the swing axis of swing base, when cantilever base rotates relative to swing base, cantilever rock breaking mechanism rotates to adjust the rolling operation direction of rock breaking head on working face.

[0008] Beneficial effects: the utility model on the basis of prior art in cantilever tunneling machine is improved, by being set up the cantilever base of rotation installation on swing base at the end of cantilever away from rock breaking head, and make the rotation axis of cantilever base be perpendicular to the swing axis of swing base, so that cantilever rock breaking mechanism can rotate with different axis, can adjust the orientation of rock breaking head, when using direction adjusting drive mechanism to drive cantilever base to rotate, cantilever rock breaking mechanism rotates as a whole relative to swing base, changes the rotation axis direction of rock breaking head, and further adjusts the rolling operation direction of rock breaking head on working face, makes the rolling direction of rock breaking head adjust to the state of adapting rock texture direction, such as vertical state, this can guarantee that rock breaking head has better shearing rock breaking effect to rock, and it is favorable to improve the excavation efficiency of cantilever tunneling machine.

[0009] Further, the cantilever includes a first arm section and a second arm section, the first arm section is hingedly connected to an adjacent end of the second arm section, an end of the first arm section away from the second arm section is hingedly connected to the cantilever base, an end of the second arm section away from the first arm section is connected to the rock breaking head, a first arm section drive mechanism is arranged between the first arm section and the cantilever base for driving the first arm section to swing relative to the cantilever base, and a second arm section drive mechanism is arranged between the second arm section and the first arm section for driving the second arm section to swing relative to the first arm section.

[0010] Further, the hinging axis of the first arm section and the second arm section is perpendicular to the hinging axis of the first arm section and the cantilever base.

[0011] Further, the rotation axis of the rock breaking head is perpendicular to the hinging axis of the first arm section and the second arm section.

[0012] Further, the length of the first arm section is less than the length of the second arm section.

[0013] Further, the first arm section includes two spaced apart hinging ears and a connecting side wall connecting the two hinging ears, the hinging ears are hingedly connected to the cantilever base, and the first arm section drive mechanism is connected to the connecting side wall.

[0014] Further, the second arm section drive mechanism and the second arm section are respectively connected to opposite side edges of the first arm section.

[0015] Further, the swing base comprises a rotating platform and a vertical mounting seat vertically arranged on the top surface of the rotating platform, and the vertical mounting seat is provided with a rotating mounting hole perpendicular to the vertical extension, and the cantilever base is rotatably mounted in the rotating mounting hole.

[0016] Further, the rock breaking head is a wheel type cutter head, which comprises a cutter head base body and a rolling cutter rotatably mounted on the cutter head base body.

[0017] Further, the machine body comprises a chassis, and the chassis is provided with a sliding rail extending along the advancing direction, and the sliding rail is provided with a movable sliding seat, and the swing base is swingably mounted on the sliding seat. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of an embodiment of the cantilever tunneling machine of the utility model;

[0019] Figure 2 It is a position posture schematic view of the cantilever tunneling machine in Figure 1 when excavating the side of a tunnel from an oblique view angle;

[0020] Figure 3 It is a position posture schematic view of the cantilever tunneling machine in Figure 1 when excavating the side of a tunnel from a front view angle;

[0021] Figure 4 It is a position posture schematic view of the cantilever tunneling machine in Figure 1 when excavating the bottom of a tunnel from an oblique view angle;

[0022] Figure 5 It is a position posture schematic view of the cantilever tunneling machine in Figure 1 when excavating the bottom of a tunnel from a front view angle;

[0023] Figure 6 It is a position posture schematic view of the cantilever tunneling machine in Figure 1 when excavating the corner of a tunnel from an oblique view angle;

[0024] Figure 7 It is a position posture schematic view of the cantilever tunneling machine in Figure 1 when excavating the corner of a tunnel from a front view angle.

[0025] In the figure: 10, chassis; 11, sliding rail; 12, sliding seat; 13, telescopic driving mechanism;

[0026] 20, swing base; 21, deflection driving mechanism; 22, direction adjusting driving mechanism;

[0027] 30, cantilever base; 31, first section arm; 32, second section arm; 33, rock breaking head; 34, first section arm driving mechanism; 35, second section arm driving mechanism;

[0028] 40. Slag scraper; 50. Support shoe; 60. Rear support; 70. Electrical control cabinet; 80. Pump station; 90. Tunnel. Detailed Implementation

[0029] The basic concept of this utility model of a cantilever tunneling machine is to change the rotation axis direction of the cantilever rock breaking mechanism and adjust the rolling operation direction of the rock breaking head on the working face, so that the rolling direction of the rock breaking head is adjusted to adapt to the rock texture direction, thereby ensuring the rock breaking effect of the rock breaking head on the rock and improving the excavation efficiency of the cantilever tunneling machine.

[0030] The present invention will be described in detail below with reference to the embodiments.

[0031] Embodiments of the cantilever tunneling machine of this utility model:

[0032] like Figure 1 As shown, the cantilever tunneling machine includes a body and a cantilever rock-breaking mechanism. The body is equipped with a swing base 20. The cantilever rock-breaking mechanism includes a cantilever and a rock-breaking head 33 located at the end of the cantilever. The rock-breaking head 33 is rotatably mounted on the cantilever and used for rolling and breaking rock on the corresponding working face. A cantilever base 30 is located at the end of the cantilever furthest from the rock-breaking head 33. The cantilever base 30 is rotatably mounted on the swing base 20 and equipped with a steering drive mechanism 22 for rotating the cantilever base 30. The rotation axis of the cantilever base 30 is perpendicular to the swing axis of the swing base 20. This allows the cantilever rock-breaking mechanism to rotate on different axes, adjusting the orientation of the rock-breaking head 33. When the cantilever base 30 is rotated by the directional drive mechanism 22, the directional drive mechanism 22 drives the cantilever rock-breaking mechanism to rotate relative to the swing base 20, changing the rotation axis direction of the rock-breaking head 33. This, in turn, adjusts the rolling direction of the rock-breaking head 33 on the tunnel face, making the rolling direction of the rock-breaking head 33 adapt to the direction of the rock texture, such as a vertical state. This ensures that the rock-breaking head 33 has a good shearing and rock-breaking effect on the rock, which is beneficial to improving the excavation efficiency of the cantilever tunneling machine.

[0033] Taking the tunneling direction of the cantilever tunneling machine as the forward and backward direction, i.e., the travel direction, the swing axis of the swing base 20 is correspondingly in the up and down direction. The swing base 20 can swing left and right, and the rotation axis of the cantilever base 30 is in a plane perpendicular to the up and down direction. The cantilever of the cantilever rock breaking mechanism extends forward to break the rock in front.

[0034] The cantilever of the cantilever rock breaking mechanism comprises a first section arm 31 and a second section arm 32 arranged in sequence in the cantilever direction, the first section arm 31 is hinged to the second section arm 32, the end of the first section arm 31 away from the second section arm 32 is hinged to the cantilever base 30, the end of the second section arm 32 away from the first section arm 31 is installed with a rock breaking head 33, the first section arm 31 and the cantilever base 30 are provided with a first section arm driving mechanism 34 for driving the first section arm 31 to swing relative to the cantilever base 30, the second section arm 32 and the first section arm 31 are provided with a second section arm driving mechanism 35 for driving the second section arm 32 to swing relative to the first section arm 31, the first section arm 31 and the second section arm 32 can be relatively movable, the degree of freedom is increased, the cantilever is more flexible, and the position and posture of the rock breaking head 33 can be conveniently adjusted. In other embodiments, the cantilever can also be a one-piece cantilever without joints, one end of the cantilever is hinged to the cantilever base, the other end is installed with a rock breaking head, and a pitch adjusting driving mechanism is arranged between the cantilever and the cantilever base to drive the cantilever to pitch.

[0035] The first section arm driving mechanism 34 and the second section arm driving mechanism 35 in the embodiment both adopt hydraulic cylinders, the piston rod and the cylinder body of the first section arm driving mechanism 34 are hinged to the first section arm 31 and the cantilever base 30 respectively, and the piston rod and the cylinder body of the second section arm driving mechanism 35 are hinged to the second section arm 32 and the first section arm 31 respectively, so as to form a movable mechanical arm structure of the cantilever. In other embodiments, the first section arm driving mechanism and the second section arm driving mechanism can also adopt electric push rods under the condition that the stress condition allows.

[0036] The hinge axis of the first section arm 31 and the second section arm 32 is perpendicular to the hinge axis of the first section arm 31 and the cantilever base 30, so that the first section arm 31 and the second section arm 32 can swing towards different directions, when the rock breaking head 33 is moved left and right by swinging the base 20, the orientation of the rock breaking head 33 can be adjusted by swinging the first section arm 31 and the second section arm 32, the circumferential side of the rock breaking head 33 can be made to face the working face, the rock breaking effect is ensured, and the rock breaking effect is improved. In other embodiments, the hinge axis of the first section arm and the second section arm can be set to be parallel to the hinge axis of the first section arm and the cantilever base according to needs.

[0037] The rotation axis of the rock breaking head 33 is perpendicular to the hinge axis of the first section arm 31 and the second section arm 32, so that the direction of the rotation axis of the rock breaking head 33 can be adjusted by swinging the second section arm 32 by the second section arm driving mechanism 35, and the swinging of the first section arm 31 by the first section arm driving mechanism 34 can adapt to the rolling range of the rock breaking head 33. When the first section arm 31 swings, the cantilever can have a larger swinging amplitude, which facilitates to ensure the rolling operation range of the rock breaking head 33. In other embodiments, the rotation axis of the rock breaking head can also be parallel to the hinge axis of the first section arm and the second section arm, so that the swinging of the second section arm by the second section arm driving mechanism can adapt to the rolling range of the rock breaking head.

[0038] The direction of the rotation axis of the rock breaking head 33 is perpendicular to the length direction of the first section arm 31, i.e. the cantilever direction of the first section arm 31, and the hinge axis direction of the first section arm 31 and the second section arm 32 is perpendicular to the length direction of the first section arm 31. The rotation axis direction of the cantilever base 30 is perpendicular to the hinge axis direction of the second section arm 32 and the cantilever base 30, so that the heading machine has multiple degrees of freedom and adapts to the pose of the rock breaking head 33.

[0039] The length of the first section arm 31 is smaller than the length of the second section arm 32, and the length direction is the interval direction of the two end hinge parts. Since the length of the first section arm 31 is smaller, when the first section arm 31 is swung by the first section arm driving mechanism 34, the first section arm driving mechanism 34 can make the entire cantilever have a larger swinging angle with a smaller stretching amplitude, which facilitates to adjust the position of the rock breaking head 33. In other embodiments, the length of the first section arm can also be set to be greater than the length of the second section arm according to needs.

[0040] The first section arm 31 includes two opposite side hinge ears and a connecting side wall connecting the two side hinge ears. The hinge ears are hinged to the cantilever base 30 through hinge shafts, and the cantilever base 30 is provided with corresponding fitting ears corresponding to the hinge ears. The first section arm driving mechanism 34 is connected to the connecting side wall of the cantilever base 30, and the connecting side wall is provided with a hinge seat for the corresponding end of the first section arm driving mechanism 34. The first section arm driving mechanism 34 and the cantilever base 30 are hinged to different sides of the first section arm 31, which is compact in structure, saves space, and is convenient to arrange. In other embodiments, the first section arm driving mechanism can also be hinged to one of the side hinge ears when the space permits, as long as the swinging direction of the first section arm is ensured.

[0041] The end wall of the first section arm 31 is connected with the two side hinge ears and the connecting side wall, the spacing direction of the two side hinge ears is the width direction of the first section arm 31, the connecting side wall is the side wall in the thickness direction of the first section arm 31, the end wall is the side wall in the length direction of the first section arm 31 and is located at the end of the first section arm 31 away from the cantilever base 30, the second section arm driving mechanism 35 is respectively hinged at the opposite two side edges of the corresponding end of the first section arm 31, one side edge of the end wall of the first section arm 31 in the width direction of the first section arm 31 is provided with a hinge seat for the hinge connection of the second section arm driving mechanism 35, and the other side edge is provided with a hinge seat for the hinge connection of the second section arm 32, so as to facilitate the second section arm driving mechanism 35 to drive the second section arm 32 to swing in a larger range. In other embodiments, the second section arm can also be hinged at the center position of the end wall of the first section arm, and the second section arm driving mechanism is hinged at the edge of the end wall of the first section arm.

[0042] In the embodiment, the rock breaking head 33 is a wheel type cutter head, which includes a cutter head base body and a rolling cutter rotatably mounted on the cutter head base body. The wheel type cutter head performs rock breaking operation through self-rotation rolling of the rolling cutter. The rolling cutters are arranged on the outer circumferential surface of the cutter head base body in a staggered manner and are driven by a motor. The wheel type cutter head is rotatably mounted on the second section arm 32 at one side in the thickness direction of the second section arm 32. The second section arm driving mechanism 35 is connected to the other side in the thickness direction of the second section arm 32. The hinge axis direction of the first section arm 31 and the second section arm 32 is consistent with the width direction of the second section arm 32. The rolling cutter rock breaking has the advantages of wear resistance, suitability for long-time operation, higher rock breaking efficiency, smooth cutting surface, suitability for subsequent processing, more stable operation, small vibration, higher safety and the like. In other embodiments, the rock breaking head can also use the wheel type cutting head with cutting teeth mentioned in the background art. The layout of the rolling cutter on the cutter head base body is not limited to the three-column staggered arrangement form shown in the figure. In other embodiments, the connection positions of the wheel type cutter head and the second section arm driving mechanism on the second section arm can also be interchanged. In other embodiments, two wheel type cutter heads can also be arranged on the two sides of the second section arm.

[0043] The swing base 20 includes a rotating platform and a vertical mounting seat vertically arranged on the top surface of the rotating platform. The vertical mounting seat is provided with a vertical rotating mounting hole perpendicular to the vertical direction. The cantilever base 30 is rotatably mounted in the vertical rotating mounting hole. The main body of the cantilever base 30 is located on the front side of the vertical mounting seat. The cantilever base 30 has a rotating shaft which is assembled in the vertical rotating mounting hole of the vertical mounting seat through a slewing bearing. The vertical mounting seat is used to realize the rotation of the cantilever rock breaking mechanism around the horizontal axis, thereby reducing the occupied space of the swing base 20. In other embodiments, when the rotating platform has sufficient size in the vertical direction, the vertical mounting seat can also be omitted, and the cantilever base is rotatably mounted on the front side of the rotating platform.

[0044] The machine body comprises a chassis 10, the chassis 10 is provided with a slide rail 11 extending along the direction of travel, the slide rail 11 is provided with a movable slide base 12, the oscillating base 20 is oscillatably mounted on the slide base 12, the slide base 12 can slide forward and backward along the slide rail 11 to realize the forward and backward movement of the cantilever rock breaking mechanism, the structure is stable, the movement is reliable, and the excavation efficiency is improved. In other embodiments, the slide rail and the slide base can also not be provided, and the freedom of the cantilever rock breaking mechanism is relied on to adapt to the movement of the rock breaking head.

[0045] The chassis 10 is provided with a track for supporting the overall machine structure and propelling the overall machine to travel. The slide rail 11 is fixed on the chassis 10 and is used to bear the counterforce of the entire telescopic movement component of the cantilever rock breaking mechanism and the oscillating base 20 and guide the forward and backward movement of the component. The slide base 12 can move forward and backward relative to the slide rail 11, the slide rail 11 comprises two track guide bases arranged at intervals left and right, the two track guide bases are provided with opposite guide grooves, the slide base 12 has a portion slidingly arranged in the guide grooves, the chassis 10 is provided with a telescopic driving mechanism 13, the telescopic driving mechanism 13 is a hydraulic oil cylinder and is connected to the rear part of the slide base 12, and the slide base 12 is driven by the telescopic driving mechanism 13 to move. The oscillating base 20 is rotatably assembled on the slide base 12 through a rotary support and can rotate left and right relative to the slide base 12, and a deflection driving mechanism 21 is connected between the slide base 12 and the oscillating base 20, the deflection driving mechanism 21 is a hydraulic oil cylinder and drives the oscillating base 20 to swing left and right.

[0046] The cantilever base 30 rotates relative to the oscillating base 20 through the driving of the direction adjusting driving mechanism 22, the direction adjusting driving mechanism 22 comprises a driving motor and a transmission gear set, the driving motor is mounted on the oscillating base 20, the output shaft of the driving motor is provided with a driving gear, and a driven gear corresponding to the driving gear is mounted on the rotating shaft of the cantilever base 30. In other embodiments, the direction adjusting driving mechanism can also adopt a hydraulic motor.

[0047] The electric control cabinet 70 and the pump station 80 are arranged at the rear of the chassis 10, the rear of the chassis 10 is provided with a rear support 60 for supporting on the ground and is also provided with a support shoe 50 for supporting on the wall of the hole. The chassis 10 provides the movement function, the support system provides the tensioning function on different sections, the position and orientation of the cutter head are controlled by the multi-degree-of-freedom cantilever, and the cutting action is provided by the rolling of the cutter head. The front part of the chassis 10 is provided with a slag scraper 40, the slag scraper 40 is provided with a slag discharge system and can transport slag out.

[0048] During tunnel construction, the orientation of the rock breaking head 33 can be adjusted according to the direction of the rock texture. According to the shape of the tunnel section, the movement track of the cutter head is controlled. Combined with the Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 ,Figure 7 The position state of the rock breaking head 33 is illustrated by taking the tunnel 90 with a rectangular cross section as an example. The tunnel face is rectangular, Figure 2 、 Figure 3 The state of excavating one side edge position of the rectangular cross section of the tunnel 90 by the rock breaking head 33 is shown in FIG. 4, Figure 4 、 Figure 5 The state of excavating the bottom edge position of the rectangular cross section of the tunnel 90 by the rock breaking head 33 is shown in FIG. 5, Figure 6 、 Figure 7 The state of excavating the corner position in the left-right direction of the rectangular cross section of the tunnel 90 by the rock breaking head 33 is shown in FIG. 6. The position of the rock breaking head 33 can be flexibly adjusted.

[0049] Therefore, various cross section tunnels can be efficiently excavated, the boom of the tunneling machine is flexible, the working range is large, and the tunneling machine can be applied to excavation or expansion of hard rock tunnels with various cross section shapes. The excavation range is large, the excavation direction is flexible, the excavation efficiency is high under hard rock conditions, the rock strength that can be excavated is higher, and the efficiency is higher for the same hardness of rock.

[0050] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments without creative labor, or replace some technical features with equivalents. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cantilever tunneling machine, comprising a body and a cantilever rock-breaking mechanism, wherein the body is provided with a swing base, and the cantilever rock-breaking mechanism includes a cantilever and a rock-breaking head disposed at the end of the cantilever, characterized in that, The end of the cantilever away from the rock breaking head is provided with a cantilever base. The cantilever base is rotatably mounted on the swing base and is equipped with a directional drive mechanism for driving the cantilever base to rotate. The rotation axis of the cantilever base is perpendicular to the swing axis of the swing base. When the cantilever base rotates relative to the swing base, the cantilever rock breaking mechanism rotates to adjust the rolling operation direction of the rock breaking head on the working face.

2. The cantilever tunneling machine according to claim 1, characterized in that, The cantilever includes a first arm and a second arm. The adjacent ends of the first arm and the second arm are hinged together. The end of the first arm away from the second arm is hinged to the cantilever base. The rock-breaking head is installed at the end of the second arm away from the first arm. A first arm drive mechanism is provided between the first arm and the cantilever base to drive the first arm to swing relative to the cantilever base. A second arm drive mechanism is provided between the second arm and the first arm to drive the second arm to swing relative to the first arm.

3. The cantilever tunneling machine according to claim 2, characterized in that, The hinge axis between the first arm and the second arm is perpendicular to the hinge axis between the first arm and the cantilever base.

4. The cantilever tunneling machine according to claim 3, characterized in that, The rotation axis of the rock-breaking head is perpendicular to the hinge axis between the first and second arm sections.

5. The cantilever tunneling machine according to claim 2, 3, or 4, characterized in that, The length of the first arm is less than the length of the second arm.

6. The cantilever tunneling machine according to claim 2, 3, or 4, characterized in that, The first arm section includes two opposing hinge lugs and a connecting sidewall connecting the two hinge lugs. The hinge lugs are hinged to the cantilever base, and the first arm section drive mechanism is connected to the connecting sidewall.

7. The cantilever tunneling machine according to claim 2, 3, or 4, characterized in that, The second arm drive mechanism is connected to the second arm at the opposite edges of the end of the first arm.

8. The cantilever tunneling machine according to any one of claims 1-4, characterized in that, The swing base includes a rotating platform and a vertical mounting seat on the top surface of the rotating platform. The vertical mounting seat is provided with a rotating mounting hole extending vertically, and the cantilever base is rotatably mounted in the rotating mounting hole.

9. The cantilever tunneling machine according to any one of claims 1-4, characterized in that, The rock-breaking head is a wheel-type cutterhead, which includes a cutterhead base and a hob that is rotatably mounted on the cutterhead base.

10. The cantilever tunneling machine according to any one of claims 1-4, characterized in that, The machine body includes a chassis, on which a slide rail extends along the direction of travel is provided, and a movable slide base is provided on the slide rail. The swing base is swingably mounted on the slide base.

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