Construction device for tunnel primary support

Abstract

The invention belongs to the technical field of tunnel construction devices, and particularly relates to a tunnel primary support construction device which comprises a base, an arc-shaped supporting beam, an adjusting mechanism and an electric drill. A bottom plate is arranged at the top of the base, two sets of parallel arc-shaped supporting beams are installed at the top of the base, each arc-shaped supporting beam is composed of an inner beam and an outer beam, through sliding grooves are formed in the inner beams, inwards-concave gear grooves are formed in the outer beams, and meshing protruding edges are arranged in the gear grooves at equal intervals; adjusting mechanisms are arranged on the arc-shaped supporting beams, and electric drills are installed on the adjusting mechanisms. According to the construction device of the scheme, all-directional and high-precision positioning and drilling operation of the electric drill on the inner wall of the tunnel are achieved through the cooperative adjusting mechanisms, the drilling precision of anchor rod holes is effectively improved, and the quality and stability of tunnel supporting are guaranteed; operators can carry out remote control at a safe position far away from a dangerous area of the tunnel, so that the safety risk is greatly reduced, and the life safety of constructors is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction devices, in particular to a construction device for primary support of a tunnel. Background Art

[0002] In the initial construction stage of tunnel support, installing anchor rods as support points is one of the key links, which requires the precise drilling of a large number of anchor rod holes on the inner wall of the tunnel; the traditional drilling method mainly relies on manually operated handheld electric drills or simple drilling equipment, which is not only labor-intensive and inefficient, but also has many safety hazards due to the complex working environment in the tunnel, such as falling rocks, collapse, etc., which pose threats to construction workers; in addition, manual drilling is difficult to ensure the position accuracy and angle accuracy of the anchor rod holes, which may affect the overall stability and safety of the tunnel support; therefore, it is of great practical significance to develop a device that can adapt to the complex environment of the tunnel and realize unmanned construction. Summary of the invention

[0003] The object of the present invention is to provide a construction device for primary support of a tunnel to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a construction device for primary support of a tunnel, comprising a base, an arc-shaped support beam, an adjustment mechanism and an electric drill; The top of the base is provided with a bottom plate, and two sets of mutually parallel arc-shaped support beams are installed on the top of the base, and the arc-shaped support beams are composed of inner beams and outer beams, and the inner beams are provided with through sliding grooves, and the outer beams are provided with concave gear grooves, and the gear grooves are provided with meshing convex ridges at equal intervals; the arc-shaped support beams on the front and rear sides are provided with adjustment mechanisms, and an electric drill is installed on the adjustment mechanism, and the adjustment mechanism includes an angle adjustment mechanism, a displacement adjustment mechanism and an electric drill adjustment mechanism; The displacement adjustment mechanism moves on the arc support beam to change the relative position of the electric drill and the arc support beam; the angle adjustment mechanism changes the pitch angle of the electric drill by rotating; the electric drill adjustment mechanism drives the electric drill to move in the horizontal position by rotating; The angle adjustment mechanism includes two front and rear arc-shaped bases, a support shaft, an adjustment turbine, a worm and a worm drive motor. The arc-shaped base is clamped between the inner beam and the outer beam. A limit block is provided at the bottom of the arc-shaped base. The limit block is inserted into the slide groove. The arc-shaped base moves along the curvature of the arc-shaped support beam. The connection between the limit block and the slide groove plays a guiding and limiting role. A support shaft is rotatably installed between the two arc-shaped bases, and the front end of the support shaft extends to the outside of the front arc-shaped base, an adjusting turbine is installed at the front end of the support shaft, a worm drive motor is installed at the bottom of the outer side of the front arc-shaped base, a worm is installed at the transmission end of the worm drive motor, and the worm and the adjusting turbine are meshed with each other; the worm drive motor drives the worm to rotate, and the worm drives the adjusting turbine to rotate, and the adjusting turbine rotates synchronously with the support shaft; an electric drill adjustment mechanism is fixedly installed on the support shaft, the electric drill adjustment mechanism includes an electric drill base, a sliding frame, a threaded rod and a threaded rod drive motor, and the electric drill base is fixed on the support shaft; A displacement adjustment mechanism is installed on the top of the arc-shaped support beam on the front side. The displacement adjustment mechanism includes a displacement drive motor, a displacement base and a connecting plate. The displacement base is clamped on the outer beam. Connecting plates are installed on the bottom of the front and rear sides of the displacement base, and the bottom of the connecting plate is installed downward on the top of the arc-shaped base.

[0005] Preferably, a driving system is arranged in the inner cavity of the base, driving wheels are symmetrically arranged on both sides of the base, and the driving system is connected to the driving wheels, and the rotation of the driving wheels is controlled by the driving system; the driving system is composed of a motor, a reducer, a coupling, a transmission shaft and a controller, and the driving wheel is connected to the transmission shaft to transmit the power output by the motor and the reducer to the driving wheel.

[0006] Preferably, the electric drill is composed of an electric drill fixing frame, an electric drill motor, a drilling drill bit and a mounting plate, the electric drill fixing frame is disc-shaped, and the bottom of the electric drill fixing frame is fixed together with the sliding frame; the electric drill motor is installed on the left side of the electric drill fixing frame, the electric drill motor extends to the right, and the drilling drill bit is installed on the transmission end of the electric drill motor.

[0007] Preferably, mounting plates are symmetrically installed on the front and rear sides of the electric drill fixing frame, the mounting plates extend outward, and a laser locator is installed on the top of the mounting plates. A laser locator is also installed on the top of the electric drill fixing frame. The three groups of laser locators are all facing the extension direction of the drilling drill bit. The three groups of laser locators constitute a positioning area to assist the positioning work of the drilling drill bit.

[0008] Preferably, a displacement drive motor is installed on the front side of the displacement base, and a meshing wheel is installed in the middle of the inner cavity of the displacement base. The displacement drive motor is transmission-connected to the meshing wheel, and the meshing wheel is inserted into the gear groove; the wheel surface of the meshing wheel is provided with inwardly recessed convex ridge button holes at equal intervals, and the convex ridge button holes mesh downward with the meshing convex ridges in the gear groove.

[0009] Preferably, adjustment grooves are symmetrically provided on the front and rear sides of the top of the electric drill base, a slide frame is installed in the middle of the electric drill base, and the front and rear sides of the slide frame are respectively clamped in the adjustment grooves on both sides, a threaded rod drive motor is installed on the left side of the electric drill base, and a threaded rod is installed on the transmission end of the threaded rod drive motor, and the threaded rod is inserted into the electric drill base.

[0010] Preferably, the threaded rod passes through and is threadedly connected in the sliding frame; the threaded rod drives the motor to drive the sliding frame to move laterally, and the electric drill is installed on the top of the sliding frame and moves synchronously with the sliding frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The construction device of this scheme realizes the all-round and high-precision positioning and drilling operation of the electric drill on the inner wall of the tunnel through the cooperative adjustment mechanism, effectively improving the drilling accuracy of the anchor hole and ensuring the quality and stability of the tunnel support; The unmanned drilling design allows operators to perform remote control in a safe location away from dangerous areas of the tunnel, thus avoiding damage to construction workers caused by the complex environment and potential safety hazards in the tunnel, greatly reducing safety risks and ensuring the safety of construction workers. The device has a high degree of automation, and the various mechanisms work together to significantly improve drilling efficiency. Compared with traditional manual drilling methods, it can complete a large number of anchor hole drilling tasks in a shorter time, shortening the construction period of the initial tunnel support, reducing construction costs, and improving construction efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of a single electric drill of the present invention; Figure 2 It is a side view of a single electric drill of the present invention; Figure 3 It is a front view of the double electric drill of the present invention; Figure 4 It is a schematic diagram of the displacement adjustment mechanism of the present invention; Figure 5 It is a schematic diagram of the displacement drive motor of the present invention; Figure 6 It is a schematic diagram of the electric drill and the electric drill adjustment mechanism of the present invention; Figure 7 A top view of the electric drill and the electric drill adjustment mechanism of the present invention; Figure 8 It is a left side view of the electric drill and the electric drill adjustment mechanism of the present invention; Fig. 9 It is a schematic diagram of the meshing ridges of the present invention.

[0013] In the figure: 10 base, 101 bottom plate, 102 driving wheel; 20 arc-shaped support beam, 201 inner beam, 202 outer beam, 203 sliding groove, 204 gear groove, 205 meshing ridge; 30 angle adjustment mechanism, 301 support shaft, 302 adjustment turbine, 303 worm, 304 worm drive motor, 305 arc base, 306 limit block; 40 displacement adjustment mechanism, 401 displacement drive motor, 402 displacement base, 403 connection plate, 404 meshing wheel, 405 convex edge button hole; 50 electric drill adjustment mechanism, 501 electric drill base, 502 adjustment slot, 503 slide frame, 504 threaded rod, 505 threaded rod driving motor; 60 electric drill, 601 electric drill bracket, 602 electric drill motor, 603 drilling drill bit, 604 mounting plate, 605 laser locator. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0016] See also Figure 1-9 , the present invention provides the following technical solutions: a construction device for primary support of a tunnel, comprising a base 10, an arc-shaped support beam 20, an adjustment mechanism and an electric drill 60; A bottom plate 101 is provided on the top of the base 10 for carrying and fixing other components; a driving system is provided in the inner cavity of the base 10, and driving wheels 102 are symmetrically provided on both sides of the base 10, and the driving system is connected to the driving wheels 102, and the driving system controls the driving wheels 102 to rotate; The driving system is composed of a motor, a reducer, a coupling, a transmission shaft and a controller. The driving wheel 102 is connected to the transmission shaft to transmit the power output by the motor and the reducer to the driving wheel 102; thereby realizing the displacement of the entire device in the tunnel, providing stable support and convenient mobility for subsequent drilling operations; Two sets of mutually parallel arc-shaped support beams 20 are installed on the top of the base 10. The arc-shaped support beams 20 are made of high-strength alloy material, have good bending strength and stability, and can effectively disperse the stress generated during drilling operations; the arc-shaped support beams 20 are composed of an inner beam 201 and an outer beam 202. The inner beam 201 is provided with a through sliding groove 203, and the outer beam 202 is provided with an inwardly concave gear groove 204, and the gear groove 204 is equidistantly provided with meshing ridges 205, which provide a guide and transmission basis for the movement of the subsequent adjustment mechanism; The adjustment mechanism includes an angle adjustment mechanism 30, a displacement adjustment mechanism 40 and an electric drill adjustment mechanism 50; the front and rear arc-shaped support beams 20 are both provided with adjustment mechanisms, but only the front adjustment mechanism carries a power source, and the rear adjustment mechanism is used for balancing during sliding. An electric drill 60 is installed on the adjustment mechanism, and the adjustment mechanism can perform drilling operations at any position and angle on the inner wall of the tunnel; the displacement adjustment mechanism 40 moves on the arc-shaped support beam 20 to change the relative position of the electric drill 60 and the arc-shaped support beam 20; the angle adjustment mechanism 30 changes the pitch angle of the electric drill 60 by rotating; the electric drill adjustment mechanism 50 drives the electric drill 60 to move in a lateral position by rotating; Angle adjustment mechanism 30: includes two front and rear arc-shaped bases 305, a support shaft 301, an adjustment turbine 302, a worm 303 and a worm drive motor 304. The arc-shaped base 305 is clamped between the inner beam 201 and the outer beam 202. A limit block 306 is provided at the bottom of the arc-shaped base 305. The limit block 306 is inserted into the slide groove 203. The arc-shaped base 305 moves along the curvature of the arc-shaped support beam 20. The connection between the limit block 306 and the slide groove 203 plays a guiding and limiting role. The rotation between the two arc-shaped bases 305 A support shaft 301 is dynamically installed, and the front end of the support shaft 301 extends to the outside of the front arc-shaped base 305, and an adjusting turbine 302 is installed at the front end of the support shaft 301, and a worm drive motor 304 is installed at the bottom of the outer side of the front arc-shaped base 305, and a worm 303 is installed at the transmission end of the worm drive motor 304, and the worm 303 and the adjusting turbine 302 are meshed with each other; the worm drive motor 304 drives the worm 303 to rotate, and the worm 303 drives the adjusting turbine 302 to rotate, and the adjusting turbine 302 rotates synchronously with the support shaft 301; The displacement adjustment mechanism 40 comprises a displacement drive motor 401, a displacement base 402 and a connecting plate 403. The displacement base 402 is clamped on the outer beam 202. The connecting plates 403 are installed at the bottom of both the front and rear sides of the displacement base 402, and the bottom of the connecting plate 403 is downwardly installed on the top of the arc base 305. The displacement drive motor 401 is installed on the front side of the displacement base 402, and a meshing wheel 404 is installed in the middle of the inner cavity of the displacement base 402. The displacement drive motor 401 is connected to the meshing wheel 404 in a transmission manner, and the meshing wheel 404 is inserted into the gear groove 204. The wheel surface of the meshing wheel 404 is provided with convex ridge button holes 405 that are concave inwardly at equal intervals, and the convex ridge button holes 405 are downwardly meshed with the meshing convex ridges 205 in the gear groove 204. The displacement drive motor 401 drives the meshing wheel 404 to rotate, so that the meshing wheel 404 is displaced along the extension direction of the outer beam 202. The electric drill adjustment mechanism 50 includes an electric drill base 501, a slide frame 503, a threaded rod 504 and a threaded rod driving motor 505. The electric drill base 501 is fixed on the support shaft 301. Adjustment slots 502 are symmetrically provided on the front and rear sides of the top of the electric drill base 501. A slide frame 503 is installed in the middle of the electric drill base 501, and the front and rear sides of the slide frame 503 are respectively clamped in the adjustment slots 502 on both sides. A threaded rod driving motor 505 is installed on the left side of the electric drill base 501. The transmission end of the threaded rod driving motor 505 is installed with a threaded rod 504. The threaded rod 504 is plugged into the electric drill base 501, and the threaded rod 504 penetrates and is screwed in the slide frame 503. The threaded rod driving motor 505 drives the slide frame 503 to move horizontally. The electric drill 60 is installed on the top of the slide frame 503 and moves synchronously with the slide frame 503. Electric drill 60: It is composed of an electric drill fixing frame 601, an electric drill motor 602, a punching drill bit 603 and a mounting plate 604. The electric drill fixing frame 601 is disc-shaped, and the bottom of the electric drill fixing frame 601 is fixed together with the sliding frame 503; the electric drill motor 602 is installed on the left side of the electric drill fixing frame 601, the electric drill motor 602 extends to the right, and the punching drill bit 603 is installed on the transmission end of the electric drill motor 602; the mounting plates 604 are symmetrically installed on the front and rear sides of the electric drill fixing frame 601, the mounting plates 604 extend outward, and a laser locator 605 is installed on the top of the mounting plate 604. A laser locator 605 is also installed on the top of the electric drill fixing frame 601. The three groups of laser locators 605 are all facing the extension direction of the punching drill bit 603. The three groups of laser locators 605 form a positioning area to assist the positioning work of the punching drill bit 603; The arc-shaped support beam 20 is arched as a whole, corresponding to the arched tunnel. In the initial construction of tunnel support, anchor rods need to be installed as support points. Therefore, anchor rod holes need to be drilled on the inner wall of the tunnel. The use of this device can realize unmanned drilling and reduce safety risks.

[0017] The scheme works as follows: 1) Initial positioning: During the initial construction of tunnel support, the device is first moved to the vicinity of the predetermined drilling position through the driving wheel 102 on the base 10; at this time, the controller in the drive system controls the motor to operate, driving the transmission shaft and then driving the driving wheel 102, so that the device can move flexibly in the tunnel and approach the target area, providing a basic position for subsequent drilling operations; 2) Laser positioning and coordinate determination: After the device reaches the approximate position, the inner wall of the tunnel is scanned and positioned using three sets of laser positioners 605 on the electric drill fixture 601; these laser positioners 605 cooperate with the positioning marks pre-set on the inner wall of the tunnel, and through laser measurement and positioning algorithms, the specific position and angle of the anchor hole to be drilled are determined, and the actual position information is converted into recognizable coordinate data so that each adjustment mechanism can perform precise actions; 3) Displacement adjustment: According to the coordinate information obtained by laser positioning, the displacement adjustment mechanism 40 starts to work; the displacement drive motor 401 on the front side of the displacement base 402 starts and drives the meshing wheel 404 in the middle of the inner cavity to rotate; because the convex buckle hole 405 of the meshing wheel 404 and the meshing convex ridge 205 in the gear groove 204 of the outer beam 202 are tightly meshed with each other, the meshing wheel 404 can achieve displacement along the extension direction of the outer beam 202, driving the entire device to move along the axial direction of the tunnel on the arc support beam 20, quickly and accurately adjusting the electric drill 60 to the predetermined drilling position, ensuring the accuracy of the drilling position in the axial direction of the tunnel; 4) Angle adjustment: After the displacement adjustment is completed, the angle adjustment mechanism 30 starts to work; the worm drive motor 304 at the bottom of the outer side of the front arc-shaped base 305 runs, driving the worm 303 to rotate; since the worm 303 is tightly meshed with the adjustment turbine 302 at the front end of the support shaft 301, the rotation of the worm 303 drives the adjustment turbine 302 to rotate, thereby changing the angle of the support shaft 301 that rotates synchronously with the adjustment turbine 302, achieving precise adjustment of the pitch angle of the electric drill 60, ensuring the consistency of the drilling angle with the preset angle, so as to meet the requirements of anchor hole drilling at different positions and working conditions on the inner wall of the tunnel; 5) Lateral adjustment of the electric drill 60: When the drilling position and angle are adjusted to the right position, the electric drill adjustment mechanism 50 performs the final fine adjustment; the threaded rod driving motor 505 on the left side of the electric drill base 501 is started to drive the threaded rod 504 to rotate; since the threaded rod 504 is threaded through the slide frame 503, and the front and rear sides of the slide frame 503 are clamped in the adjustment slot 502 of the electric drill base 501, the rotation of the threaded rod 504 will drive the slide frame 503 to move in the lateral position. The distance that the slide frame 503 moves with the electric drill 60 is the depth of the drilling. By controlling the movement of the slide frame 503, the drilling work of the drilling drill 603 is ensured to proceed smoothly; 6) Drilling operation and real-time monitoring and adjustment: After completing the above positioning and adjustment steps, the electric drill motor 602 is started, driving the drilling drill bit 603 to rotate at high speed, and drilling operation begins on the inner wall of the tunnel; during the drilling process, the laser locator 605 continuously monitors the position and angle of the drilling drill bit 603. Once a deviation is detected, each adjustment mechanism will automatically adjust in time according to the feedback information to ensure that the accuracy and quality of the drilling are always maintained within the preset range; for example, if the drill bit deviates during the drilling process, the laser locator 605 will transmit the deviation information to the control system, and the control system will determine the direction and amplitude of the adjustment according to the algorithm, and then drive the displacement adjustment mechanism 40, the angle adjustment mechanism 30 or the electric drill adjustment mechanism 50 accordingly to make subtle position or angle corrections to ensure that the drilling is carried out according to the predetermined trajectory and parameters; 7) Drilling and transfer: After drilling an anchor hole, the displacement adjustment mechanism 40 is driven to continue drilling at the circumferential position, and the pitch angle of the electric drill 60 is adjusted by the angle adjustment mechanism 30 to complete the drilling work on the inner wall of the tunnel; after the same circumferential drilling is completed, the driving wheel 102 is used to quickly move to the next circumferential drilling position, and the above operation is repeated, so that the anchor hole drilling task on the inner wall of the tunnel can be completed efficiently and accurately, realizing unmanned drilling operations, greatly reducing safety risks, and improving construction efficiency and quality; 8) Laser measurement method: The laser beam emitted by the laser locator 605 irradiates the surface of the target object, and the reflected light is received by the receiver; by measuring the geometric relationship such as the laser beam emission angle, reflection angle and the laser spot position on the surface of the object, the distance and position of the target object relative to the measurement system are calculated using trigonometric functions; Alternatively, a reflector plate for positioning is installed on the inner wall of the tunnel, and the laser locator 605 emits a laser beam to the reflector plate, and the receiver receives the laser signal reflected by the reflector plate; by measuring the time and angle from the emission to the reception of the laser beam and the known position of the reflector plate, the position and direction of the laser emitter relative to the reflector plate are calculated, thereby determining its own position; In addition, as attached Figure 3 As shown, in this solution, two symmetrically arranged electric drills 60 can be used for simultaneous construction, which can further improve the drilling efficiency.

[0018] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction device for primary support of a tunnel, comprising a base (10), an arc-shaped support beam (20), an adjustment mechanism and an electric drill (60), characterized in that: A bottom plate (101) is provided on the top of the base (10), and two sets of mutually parallel arc-shaped support beams (20) are installed on the top of the base (10), the arc-shaped support beams (20) are composed of an inner beam (201) and an outer beam (202), the inner beam (201) is provided with a through sliding groove (203), the outer beam (202) is provided with an inwardly concave gear groove (204), and meshing ridges (205) are equidistantly arranged in the gear groove (204); adjustment mechanisms are provided on the front and rear sides of the arc-shaped support beams (20), and an electric drill (60) is installed on the adjustment mechanism, and the adjustment mechanism includes an angle adjustment mechanism (30), a displacement adjustment mechanism (40) and an electric drill adjustment mechanism (50); The angle adjustment mechanism (30) comprises two front and rear arc-shaped bases (305), a support shaft (301), an adjustment turbine (302), a worm (303) and a worm drive motor (304); the arc-shaped base (305) is clamped between the inner beam (201) and the outer beam (202); a limit block (306) is provided at the bottom of the arc-shaped base (305); the limit block (306) is inserted into the slide groove (203); and the arc-shaped base (305) moves along the curvature of the arc-shaped support beam (20); A support shaft (301) is rotatably mounted between the two arc-shaped bases (305), and the front end of the support shaft (301) extends to the outside of the front arc-shaped base (305), an adjusting turbine (302) is mounted on the front end of the support shaft (301), a worm drive motor (304) is mounted on the bottom of the outer side surface of the front arc-shaped base (305), a worm (303) is mounted on the transmission end of the worm drive motor (304), and the worm (303) and the adjusting turbine (302) are meshed with each other; The driving motor (304) drives the worm (303) to rotate, and the worm (303) drives the adjusting turbine (302) to rotate, and the adjusting turbine (302) rotates synchronously with the supporting shaft (301); an electric drill adjusting mechanism (50) is fixedly mounted on the supporting shaft (301), and the electric drill adjusting mechanism (50) comprises an electric drill base (501), a sliding frame (503), a threaded rod (504) and a threaded rod driving motor (505); and the electric drill base (501) is fixed on the supporting shaft (301); A displacement adjustment mechanism (40) is installed on the top of the arc-shaped support beam (20) at the front side. The displacement adjustment mechanism (40) comprises a displacement drive motor (401), a displacement base (402) and a connecting plate (403). The displacement base (402) is clamped on the outer beam (202). Connecting plates (403) are installed on the bottoms of both the front and rear sides of the displacement base (402), and the bottom of the connecting plate (403) is installed downwardly on the top of the arc-shaped base (305).

2. A tunnel primary support construction device according to claim 1, characterized in that: A drive system is arranged in the inner cavity of the base (10); drive wheels (102) are symmetrically arranged on both sides of the base (10); the drive system is connected to the drive wheels (102), and the drive system controls the rotation of the drive wheels (102); the drive system is composed of a motor, a reducer, a coupling, a transmission shaft, and a controller; the drive wheel (102) is connected to the transmission shaft to transmit power output by the motor and the reducer to the drive wheel (102).

3. A tunnel primary support construction device according to claim 1, characterized in that: The electric drill (60) is composed of an electric drill fixing frame (601), an electric drill motor (602), a drilling bit (603) and a mounting plate (604); the electric drill fixing frame (601) is disc-shaped, and the bottom of the electric drill fixing frame (601) is fixed together with the sliding frame (503); the electric drill motor (602) is installed on the left side of the electric drill fixing frame (601), the electric drill motor (602) extends to the right, and the drilling bit (603) is installed on the transmission end of the electric drill motor (602).

4. A tunnel primary support construction device according to claim 3, characterized in that: The electric drill fixing frame (601) is symmetrically provided with mounting plates (604) on both sides, front and rear, and the mounting plates (604) extend outwards. A laser locator (605) is installed on the top of the mounting plates (604). A laser locator (605) is also installed on the top of the electric drill fixing frame (601). The three groups of laser locators (605) are all oriented in the extension direction of the punching drill bit (603). The three groups of laser locators (605) form a positioning area to assist the positioning work of the punching drill bit (603).

5. A tunnel primary support construction device according to claim 1, characterized in that: A displacement drive motor (401) is installed on the front side of the displacement base (402), and a meshing wheel (404) is installed in the middle of the inner cavity of the displacement base (402). The displacement drive motor (401) is transmission-connected to the meshing wheel (404), and the meshing wheel (404) is inserted into the gear groove (204); the wheel surface of the meshing wheel (404) is provided with inwardly recessed convex ridge button holes (405) at equal intervals, and the convex ridge button holes (405) mesh downwardly with the meshing convex ridges (205) in the gear groove (204).

6. A construction device for primary support of a tunnel according to claim 1, characterized in that: The electric drill base (501) has adjustment slots (502) symmetrically formed on the front and rear sides of the top, a slide frame (503) is installed in the middle of the electric drill base (501), and the front and rear sides of the slide frame (503) are respectively clamped in the adjustment slots (502) on the two sides, a threaded rod drive motor (505) is installed on the left side of the electric drill base (501), a threaded rod (504) is installed at the transmission end of the threaded rod drive motor (505), and the threaded rod (504) is plugged into the electric drill base (501).

7. A construction device for primary support of a tunnel according to claim 6, characterized in that: The threaded rod (504) penetrates and is threadedly connected in the slide frame (503); the threaded rod drives the motor (505) to drive the slide frame (503) to move horizontally, and the electric drill (60) is installed on the top of the slide frame (503) and moves synchronously with the slide frame (503).

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