Tunnel feet-lock bolt drilling device with controllable drilling depth and use method

Abstract

The invention discloses a tunnel feet-lock bolt drilling device with the controllable drilling depth and a using method, and relates to the technical field of tunnel supporting construction, the drilling device comprises an air leg, an orientation mechanism, a fixing mechanism, a cleaning mechanism and a rock drilling gun, the air leg is obliquely inserted into the ground behind a hole to be drilled at a certain angle, so that the drilling device is fixed to the ground; through the cleaning mechanism and the cleaning orientation mechanism, the fixing mechanism can smoothly fix the rock drilling gun, the rock drilling gun is placed horizontally, the rock drilling gun is rotated, the orientation mechanism assists the rock drilling gun in orientation, the rock drilling gun is fixed through the fixing mechanism after orientation, and drilling is conducted along a preset path by fixing the direction of the rock drilling gun. And drilling deviation caused by direction change is reduced, so that the drilling depth of the rock drilling gun is controlled more accurately.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support construction, and in particular to a tunnel locking anchor rod drilling device with controllable drilling depth and a use method thereof. Background Art

[0002] During the tunnel construction process, according to the New Austrian Tunnel Construction Method (NATM) tunnel construction principles, in order to control tunnel deformation and ensure subsequent safe construction, initial support will be implemented around the inner side of the tunnel. The quality of the initial support measures directly determines the overall stability of the tunnel. The initial support measures include tunnel locking anchor rods. Locking anchor rods refer to the initial support operations carried out to ensure safety when excavating the tunnel in the arch-first and wall-later method. Anchor rods are driven into the arch foot at a certain angle, with common angles of 30°, 45°, 90°, etc., to fix the steel arch frame and prevent tunnel collapse.

[0003] The initial construction of tunnel locking anchors was mainly based on construction experience, using simple pads to roughly determine the drilling angle of the air-leg rock drill. The drilling angle of this method is difficult to guarantee. At present, the construction of tunnel locking anchors will also be combined with the use of a ground-based guide frame for the air-leg rock drill. The guide frame needs to be placed on the ground or on a trolley and adjusted to a predetermined position to fit the steel arch frame. Subsequently, the drill rod is passed through the guide hole to drill the locking anchor. However, this method has strict requirements on the flatness and elevation of the ground or trolley, and is easily affected by human factors, resulting in large errors. The accuracy of the drilling position and angle is poor, which poses a greater quality risk. Summary of the invention

[0004] The object of the present invention is to provide a tunnel locking anchor drilling device with controllable drilling depth and a use method thereof, so as to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A tunnel locking anchor drilling device with controllable drilling depth, comprising an air leg, an orienting mechanism, a fixing mechanism, a cleaning mechanism and a rock drill, wherein the air leg is fixedly connected to the orienting mechanism, the orienting mechanism is fixedly connected to the fixing mechanism, the orienting mechanism is fixedly connected to the rock drill, and the cleaning mechanism is fixedly connected to the orienting mechanism.

[0007] The air leg is inserted obliquely into the ground behind the hole to be drilled at a certain angle, so that the drilling device is fixed on the ground, so that the device is not affected by the requirements of ground flatness and elevation, the rock drill gun is placed horizontally, the rock drill gun is rotated, and the rock drill gun is oriented with the assistance of the directional mechanism. After orientation, it is fixed by the fixing mechanism. The directional mechanism is cleaned by the cleaning mechanism so that the fixing mechanism can smoothly fix the rock drill gun. By fixing the direction of the rock drill gun, drilling is carried out along a predetermined path, reducing the drilling deviation caused by the change of direction, making the drilling depth of the rock drill gun more accurately controlled, and after fixing, drilling is carried out by the rock drill gun to control the drilling depth.

[0008] Furthermore, the orienting mechanism includes a fixed shaft, a connecting shaft, a scale shaft, a rotating shaft and a No. 1 nut. The fixed shaft and the connecting shaft are fixedly connected, the scale shaft and the connecting shaft are rotatably connected, the rotating shaft and the connecting shaft are rotatably connected, the connecting shaft is provided with an external thread, the No. 1 nut is provided with an internal thread, the external thread and the internal thread are meshed, the rotating shaft and the No. 1 nut are slidably connected, the rotating shaft and the scale shaft are slidably connected, the fixed shaft and the scale shaft are slidably connected, the fixed shaft and the air leg are fixedly connected, and the rotating shaft and the rock drill are fixedly connected.

[0009] The fixed shaft is fixed by fixing the gas leg, and the connecting shaft is passed through the through hole by setting the scale shaft and the rotating shaft. The scale shaft and the rotating shaft are installed on the connecting shaft. The connecting shaft is provided with an external thread, and the external thread is engaged with the internal thread of the No. 1 nut. The No. 1 nut is fixed to the end of the connecting shaft. The rotating shaft and the No. 1 nut do not completely limit the freedom of movement of the scale shaft and the rotating shaft, so that the scale shaft and the rotating shaft can rotate around the axis of the rotating shaft. The rock drill is driven to rotate the rotating shaft by rotating the rock drill, and the rock drill is oriented by controlling the rotation angle of the rotating shaft.

[0010] Furthermore, the scale axis is provided with a plurality of scale lines, one scale line is provided every 15°, the scale axis is provided with a hollow groove, and the rotating axis is provided with a pointer.

[0011] A number of scale lines are arranged through the scale axis, one scale line is arranged every 15°. After the scale axis is fixed on the fixed axis, a hollow groove is arranged through the scale axis so that under the action of gravity, there are two scale lines which are horizontal. The pointer is rotated to align with the horizontal scale line for benchmark calibration to eliminate errors. The rotating axis is rotated according to the hole to be punched, and adjustments are made every 15° to ensure accurate orientation.

[0012] Furthermore, the fixing mechanism includes a bolt, a No. 2 nut and a monitoring unit, the fixed shaft is provided with a plurality of No. 1 locking holes, the scale shaft is provided with a plurality of No. 2 locking holes, the rotating shaft is provided with a plurality of No. 3 locking holes, the bolt and the No. 2 nut are threadedly connected, the bolt and the No. 1 locking hole are fixedly connected, the bolt and the No. 2 locking hole are fixedly connected, the bolt and the No. 3 locking hole are fixedly connected, two monitoring units are provided, the fixed shaft is provided with a No. 1 mounting groove, the monitoring unit is placed in the No. 1 mounting groove, the rotating shaft is provided with a No. 2 mounting groove, and the monitoring unit is placed in the No. 2 mounting groove.

[0013] A number of No. 1 locking holes, No. 2 locking holes and No. 3 locking holes are set by fixing the shaft, the scale shaft and the rotating shaft. A number of bolts are passed through the No. 1 locking hole, the No. 2 locking hole and the No. 3 locking hole, and the No. 2 nut is screwed into the end to limit the freedom of movement of the scale shaft and the rotating shaft. The scale shaft and the rotating shaft can no longer rotate around the axis of the rotating shaft, thereby fixing the rock drill gun and ensuring that the rock drill gun can drill along a predetermined directional route during the drilling process, reducing the drilling deviation caused by the change of direction, ensuring the accuracy of the drilling, and thus controlling the accuracy of the drilling depth. The locking force of the scale shaft and the rotating shaft is monitored by the monitoring unit to ensure that the locking force can limit the freedom of movement of the scale shaft and the rotating shaft, and ensure that there is sufficient locking force so that they can no longer rotate around the axis of the rotating shaft.

[0014] Furthermore, the monitoring unit includes a slider No. 1, a spring No. 1, a pressure sensor No. 1, a slider No. 2, a spring No. 2 and a pressure sensor No. 2. The slider No. 1 is slidably connected to the mounting groove No. 1, the spring No. 1 is placed in the mounting groove No. 1, the spring No. 1 is fixedly connected to the slider No. 1, the pressure sensor No. 1 is placed in the mounting groove No. 1, the pressure sensor No. 1 is fixedly connected to the spring No. 1, the slider No. 2 is slidably connected to the mounting groove No. 2, the spring No. 2 is placed in the mounting groove No. 2, the spring No. 2 is fixedly connected to the slider No. 2, the pressure sensor No. 2 is placed in the mounting groove No. 2, the spring No. 2 is fixedly connected to the slider No. 2, the pressure sensor No. 2 is placed in the mounting groove No. 2, the pressure sensor No. 2 is fixedly connected to the spring No. 2, the

[0015] The No. 1 slider is connected by sliding with the No. 1 mounting groove, and the fixed shaft and the scale shaft are fixed by bolts and No. 2 nuts. Then, the No. 1 slider is made to slide into the No. 1 mounting groove, and the No. 1 spring is compressed by the No. 1 slider. The compressed No. 1 spring applies pressure to the No. 1 pressure sensor. The No. 1 pressure sensor monitors the action of the No. 1 spring, and indirectly monitors the locking force of the fixed shaft and the scale shaft. The No. 2 slider is connected by sliding with the No. 2 mounting groove, and after the scale shaft and the rotating shaft are fixed, the No. 2 slider slides into the No. 2 mounting groove, and the No. 2 spring is compressed. The compressed No. 2 spring applies pressure to the No. 2 pressure sensor, and indirectly monitors the locking force of the scale shaft and the rotating shaft. By real-time monitoring of the locking force, it is ensured that there is sufficient locking force to prevent the fixed shaft, the scale shaft and the rotating shaft from loosening, so that the rock drill can more accurately control the drilling depth.

[0016] Furthermore, the cleaning mechanism includes a water pump and a water pipe, which are fixedly connected. The fixed shaft is provided with two No. 1 water outlets, and the water pipes are connected to the No. 1 water outlets. The rotating shaft is provided with two No. 2 water outlets, and the water pipes are connected to the No. 2 water outlets.

[0017] Water is pumped by a water pump so that water can be transported along the water pipe, connected with the fixed shaft and the rotating shaft through the water pipe, and is used to transport water to water outlet No. 1 and water outlet No. 2. Two water outlets No. 1 and two water outlets No. 2 are provided, and the two identical water outlets are symmetrically provided, so that water sprayed from the water outlet can flush the connection between the fixed shaft and the scale shaft, and the connection between the scale shaft and the rotating shaft, and ensure that the water flow can flush the connection evenly to avoid flushing blind areas, thereby thoroughly cleaning the dust and impurities at the connection, making the connection more fitted, ensuring uniform distribution of locking force, enhancing the locking effect, and preventing loosening caused by uneven distribution of locking force, thereby reducing the influence of locking force distribution on the drilling depth of the rock drill, so that the rock drill can control the drilling depth more accurately.

[0018] Furthermore, the No. 1 water outlet is in the form of a trapezoid, the side of the trapezoid facing the connecting axis has a larger inclination angle than other sides, and the No. 2 water outlet is in the form of a rectangular platform, the side of the rectangular platform facing the connecting axis has a larger inclination angle than other sides.

[0019] By setting the No. 1 water outlet into a trapezoid, and making the trapezoid's side tilt angle toward the connecting axis greater than the other three side angles, and by setting the No. 2 water outlet into a rectangular table, and making the rectangular table's side tilt angle toward the connecting axis greater than the other three side angles, more water flows in the direction of the connecting axis, ensuring that water can be flushed to the symmetry axis of the two water outlets, and the speed of water flowing toward the connecting axis is faster than that of flowing outside the device, so that the water flow can quickly complete the cleaning of the connection, thereby improving the efficiency and effect of cleaning.

[0020] The method for using the tunnel locking anchor drilling device comprises the following steps:

[0021] S1: Fix the fixed shaft to the gas leg, connect the scale shaft rotating shaft and the fixed shaft through the connecting shaft, fix the rock drill to the rotating shaft, and insert the gas leg into the ground to be drilled at a certain angle to fix the gas leg;

[0022] S2: Clean the fixed shaft and the scale shaft, and the connection between the scale shaft and the rotating shaft through the cleaning mechanism, so that the locking force can be evenly distributed, ensuring the locking effect, so that the rock drill can more accurately control the drilling depth;

[0023] S3: After the scale axis is stable under the action of gravity, the two scale lines are horizontal, and the pointer is aligned with the horizontal scale line to complete the calibration of the rock drill. The rock drill is rotated according to the hole to be drilled to align it with the hole to be drilled, and the orientation mechanism is fixed by bolts and No. 2 nuts to complete the orientation of the rock drill to the hole to be drilled;

[0024] S4: The monitoring unit monitors in real time the locking force of the fixed axis and the scale axis, as well as the locking force of the connection between the scale axis and the rotating axis, to ensure that when the rock drill is drilling, if the locking force is insufficient, it can be adjusted in time to prevent the orientation from changing due to insufficient locking force, thereby ensuring the drilling angle of the rock drill and preventing the drilling depth from changing due to changes in the angle.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The gas leg is directly inserted into the ground, so that it is not subject to the requirements of ground flatness and elevation, and is less affected by human factors. The accuracy of the drilling position and angle can be guaranteed to a certain extent, and it can be applied to most tunnel support construction environments. The rock drill is combined with the gas leg, so that the drilling device can drill more difficult anchor holes. It can drill common oblique upward locking anchor holes, and at the same time, it can drill oblique upward anchor holes at a higher position as needed, and it has strong applicability.

[0027] 2. A scale line is provided through the scale axis of the directional mechanism, and a scale line is provided every 15°, and a pointer is provided on the rotating shaft, so that the rotating rock drill can be adjusted every 15°, thereby accurately controlling the drilling angle of the rock drill.

[0028] 3. Through the monitoring unit, the locking force between the rotating shaft, the scale shaft and the fixed shaft during drilling is monitored in real time, so that the operator can promptly find out whether there is looseness due to insufficient locking force, which is convenient for timely adjustment of the drilling device to ensure the accuracy of drilling and enable the rock drill to control the drilling angle more accurately.

[0029] 4. Clean the joints between the rotating shaft, the scale shaft and the fixed shaft through the cleaning mechanism to make the joints fit better, ensure uniform distribution of the locking force, enhance the locking effect, and prevent loosening caused by uneven distribution of the locking force, thereby reducing the influence of the locking force distribution on the drilling depth of the rock drill, so that the rock drill can control the drilling depth more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 yes Figure 1 A magnified view of a part A;

[0032] Figure 3It is a schematic diagram of the structure of the monitoring unit of the present invention;

[0033] Figure 4 This is a schematic diagram of the connection between the bolt and the No. 2 nut of the present invention;

[0034] Figure 5 yes Figure 4 A partial enlarged view of C;

[0035] Figure 6 yes Figure 3 A partial enlarged view of B;

[0036] Figure 7 This is a schematic diagram of the structure of the water outlet No. 1 of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the No. 2 water outlet of the present invention.

[0038] In the figure: 1. air leg; 2. directional mechanism; 21. fixed shaft; 211. No. 1 locking hole; 212. No. 1 mounting groove; 213. No. 1 water outlet; 22. connecting shaft; 23. scale shaft; 231. scale line; 232. hollow groove; 233. No. 2 locking hole; 24. rotating shaft; 241. pointer; 242. No. 3 locking hole; 243. No. 2 mounting groove; 244. No. 2 water outlet; 25. No. 1 nut; 3. fixing mechanism; 31. bolt; 32. No. 2 nut; 33. monitoring unit; 331. No. 1 slider; 332. No. 1 spring; 333. No. 1 pressure sensor; 334. No. 2 slider; 335. No. 2 spring; 336. No. 2 pressure sensor; 4. cleaning mechanism; 41. water pump; 42. water pipe; 5. rock drill. DETAILED DESCRIPTION

[0039] 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.

[0040] Example: Figure 1-Figure 5 As shown, the present invention provides a tunnel locking anchor drilling device with controllable drilling depth and a technical solution of a use method, a tunnel locking anchor drilling device with controllable drilling depth, the drilling device comprises an air leg 1, an orienting mechanism 2, a fixing mechanism 3, a cleaning mechanism 4 and a rock drilling gun 5, the air leg 1 is fixedly connected to the orienting mechanism 2, the orienting mechanism 2 is fixedly connected to the fixing mechanism 3, the orienting mechanism 2 is fixedly connected to the rock drilling gun 5, and the cleaning mechanism 4 is fixedly connected to the orienting mechanism 2.

[0041] The gas leg 1 is inserted obliquely into the ground behind the hole to be drilled at a certain angle, so that the drilling device is fixed on the ground, so that the device is not affected by the requirements of ground flatness and elevation, the rock drill 5 is placed horizontally, the rock drill 5 is rotated, and the rock drill 5 is oriented with the assistance of the orienting mechanism 2. After orientation, it is fixed by the fixing mechanism 3, and the orienting mechanism 2 is cleaned by the cleaning mechanism 4, so that the fixing mechanism 3 can smoothly fix the rock drill 5. By fixing the direction of the rock drill 5, drilling is carried out along a predetermined path, thereby reducing the drilling deviation caused by the change of direction, and making the drilling depth of the rock drill 5 more accurately controlled. After fixing, drilling is carried out by the rock drill 5, and the depth of the drilling is controlled.

[0042] like Figure 3 As shown, the orienting mechanism 2 includes a fixed shaft 21, a connecting shaft 22, a scale shaft 23, a rotating shaft 24 and a No. 1 nut 25. The fixed shaft 21 and the connecting shaft 22 are fixedly connected, the scale shaft 23 and the connecting shaft 22 are rotatably connected, the rotating shaft 24 and the connecting shaft 22 are rotatably connected, the connecting shaft 22 is provided with an external thread, the No. 1 nut 25 is provided with an internal thread, the external thread and the internal thread are meshed, the rotating shaft 24 and the No. 1 nut 25 are slidably connected, the rotating shaft 24 and the scale shaft 23 are slidably connected, the fixed shaft 21 and the scale shaft 23 are slidably connected, the fixed shaft 21 and the air leg 1 are fixedly connected, and the rotating shaft 24 and the rock drilling gun 5 are fixedly connected.

[0043] The fixed shaft 21 is fixed by fixing the gas leg 1, and the connecting shaft 22 is passed through the through hole by setting the scale shaft 23 and the rotating shaft 24, and the scale shaft 23 and the rotating shaft 24 are installed on the connecting shaft 22. The connecting shaft 22 is provided with an external thread, and the external thread is engaged with the internal thread of the No. 1 nut 25, and the No. 1 nut 25 is fixed to the end of the connecting shaft 22. The rotating shaft 24 and the No. 1 nut 25 do not completely limit the movement freedom of the scale shaft 23 and the rotating shaft 24, so that the scale shaft 23 and the rotating shaft 24 can rotate around the axis of the rotating shaft 24. The rock drill 5 is rotated to drive the rotating shaft 24 to rotate, and the rock drill 5 is oriented by controlling the rotation angle of the rotating shaft 24.

[0044] like Figure 2 As shown, the scale shaft 23 is provided with a plurality of scale lines 231 , and one scale line 231 is provided every 15°. The scale shaft 23 is provided with a hollow groove 232 , and the rotating shaft 24 is provided with a pointer 241 .

[0045] A plurality of scale lines 231 are provided through the scale shaft 23, and a scale line 231 is provided every 15°. After the scale shaft 23 is fixed to the fixed shaft 21, a hollow groove 232 is provided through the scale shaft 23, so that under the action of gravity, there are two scale lines 231 that are horizontal. The pointer 241 is rotated to align with the horizontal scale line 231 to perform a reference calibration to eliminate errors. The rotating shaft 24 is rotated according to the hole to be punched, and an adjustment is performed every 15° to ensure accurate orientation.

[0046] like Figure 4 and Figure 5 As shown, the fixing mechanism 3 includes a bolt 31, a No. 2 nut 32 and a monitoring unit 33. The fixed shaft 21 is provided with a plurality of No. 1 locking holes 211, the scale shaft 23 is provided with a plurality of No. 2 locking holes 233, the rotating shaft 24 is provided with a plurality of No. 3 locking holes 242, the bolt 31 and the No. 2 nut 32 are threadedly connected, the bolt 31 and the No. 1 locking hole 211 are fixedly connected, the bolt 31 and the No. 2 locking hole 233 are fixedly connected, the bolt 31 and the No. 3 locking hole 242 are fixedly connected, two monitoring units 33 are provided, the fixed shaft 21 is provided with a No. 1 mounting groove 212, the monitoring unit 33 is placed in the No. 1 mounting groove 212, the rotating shaft 24 is provided with a No. 2 mounting groove 243, and the monitoring unit 33 is placed in the No. 2 mounting groove 243.

[0047] By fixing the shaft 21, the scale shaft 23 and the rotating shaft 24, a number of No. 1 locking holes 211, No. 2 locking holes 233 and No. 3 locking holes 242 are set. By passing a number of bolts 31 through the No. 1 locking holes 211, No. 2 locking holes 233 and No. 3 locking holes 242, and screwing the No. 2 nuts 32 at the ends, the movement freedom of the scale shaft 23 and the rotating shaft 24 is limited, and the scale shaft 23 and the rotating shaft 24 can no longer rotate around the axis of the rotating shaft 24, thereby fixing the rock drill 5, ensuring that the rock drill 5 can drill along a predetermined directional route during the drilling process, reducing the drilling deviation caused by the change in direction, ensuring the accuracy of the drilling, and thus controlling the accuracy of the drilling depth. The locking force of the scale shaft 23 and the rotating shaft 24 is monitored by the monitoring unit 33 to ensure that the locking force can limit the movement freedom of the scale shaft 23 and the rotating shaft 24, and ensure that there is sufficient locking force so that they can no longer rotate around the axis of the rotating shaft 24.

[0048] like Figure 6 As shown, the monitoring unit 33 includes a slider 331, a spring 332, a pressure sensor 333, a slider 334, a spring 335 and a pressure sensor 336. The slider 331 is slidably connected to the mounting groove 212, the spring 332 is placed in the mounting groove 212, the spring 332 is fixedly connected to the slider 331, the pressure sensor 333 is placed in the mounting groove 212, the pressure sensor 333 is fixedly connected to the spring 332, the slider 334 is slidably connected to the mounting groove 243, the spring 335 is placed in the mounting groove 243, the spring 335 is fixedly connected to the slider 334, the pressure sensor 336 is placed in the mounting groove 243, and the pressure sensor 336 is fixedly connected to the spring 335.

[0049] The first slider 331 and the first mounting groove 212 are slidably connected, so that the fixed shaft 21 and the scale shaft 23 are fixed by the bolt 31 and the second nut 32, so that the first slider 331 slides into the first mounting groove 212, and the first slider 331 compresses the first spring 332, and the compressed first spring 332 applies pressure to the first pressure sensor 333, and the first pressure sensor 333 monitors the force of the first spring 332, and indirectly monitors the locking force of the fixed shaft 21 and the scale shaft 23. 4 is slidably connected with the No. 2 mounting groove 243, so that after the scale shaft 23 and the rotating shaft 24 are fixed, the No. 2 slider 334 slides into the No. 2 mounting groove 243, so that the No. 2 spring 335 is compressed, and the compressed No. 2 spring 335 applies pressure to the No. 2 pressure sensor 336, so as to indirectly monitor the locking force of the scale shaft 23 and the rotating shaft 24. By real-time monitoring of the locking force, it is ensured that there is sufficient locking force to prevent the fixed shaft 21, the scale shaft 23 and the rotating shaft 24 from loosening, so that the rock drill 5 can control the drilling depth more accurately.

[0050] like Figure 2 , Figure 3 , Figure 7 and Figure 8 The cleaning mechanism 4 includes a water pump 41 and a water pipe 42, the water pump 41 and the water pipe 42 are fixedly connected, the fixed shaft 21 is provided with two No. 1 water outlets 213, the water pipe 42 is connected to the No. 1 water outlet 213, the rotating shaft 24 is provided with two No. 2 water outlets 244, the water pipe 42 is connected to the No. 2 water outlet 244.

[0051] Water is pumped by the water pump 41 so that the water can be transported along the water pipe 42, and is connected with the fixed shaft 21 and the rotating shaft 24 through the water pipe 42, so as to transport the water to the No. 1 water outlet 213 and the No. 2 water outlet 244. By setting two No. 1 water outlets 213 and two No. 2 water outlets 244, the two identical water outlets are symmetrically arranged, so that the water sprayed from the water outlets can flush the connection between the fixed shaft 21 and the scale shaft 23, and the connection between the scale shaft 23 and the rotating shaft 24, and ensure that the water flow can evenly flush the connection to avoid the occurrence of flushing blind spots, thereby thoroughly cleaning the dust and impurities at the connection, making the connection more fitted, ensuring uniform distribution of the locking force, enhancing the locking effect, and preventing loosening caused by uneven distribution of the locking force, thereby reducing the influence of the locking force distribution on the drilling depth of the rock drill 5, so that the rock drill 5 can more accurately control the drilling depth.

[0052] like Figure 7 and Figure 8 As shown, the first water outlet 213 is a trapezoidal body, and the inclination angle of the side of the trapezoidal body toward the connecting axis 22 is greater than that of other sides. The second water outlet 244 is a rectangular platform, and the inclination angle of the side of the rectangular platform toward the connecting axis 22 is greater than that of other sides.

[0053] By setting the No. 1 water outlet 213 into a trapezoid, and making the angle of inclination of the trapezoid toward the side of the connecting shaft 22 greater than the other three sides, and by setting the No. 2 water outlet 244 into a rectangular table, and making the angle of inclination of the rectangular table toward the side of the connecting shaft 22 greater than the other three sides, more water flows in the direction of the connecting shaft 22, ensuring that water can be flushed to the symmetry axis of the two water outlets, and the speed of water flowing toward the connecting shaft 22 is faster than that of flowing outside the device, so that the water flow can quickly complete the cleaning of the connection, thereby improving the efficiency and effect of cleaning.

[0054] The method for using the tunnel locking anchor drilling device comprises the following steps:

[0055] S1: Fix the fixed shaft 21 to the gas leg 1, connect the scale shaft 23, the rotating shaft 24 and the fixed shaft 21 through the connecting shaft 22, fix the rock drill 5 to the rotating shaft 24, and insert the gas leg 1 into the ground to be drilled at a certain angle to fix the gas leg 1;

[0056] S2: Clean the fixed shaft 21 and the scale shaft 23, and the connection between the scale shaft 23 and the rotating shaft 24 through the cleaning mechanism 4, so that the locking force can be evenly distributed, ensuring the locking effect, so that the rock drill 5 can more accurately control the drilling depth;

[0057] S3: After the scale shaft 23 is stable under the action of gravity, the two scale lines 231 are horizontal, and the pointer 241 is aligned with the horizontal scale line 231 to complete the calibration of the rock drill 5. The rock drill 5 is rotated according to the hole to be drilled to align it with the hole to be drilled, and the orientation mechanism 2 is fixed by the bolt 31 and the second nut 32 to complete the orientation of the rock drill 5 to the hole to be drilled;

[0058] S4: The monitoring unit 33 monitors in real time the locking forces at the connection between the fixed shaft 21 and the scale shaft 23, and the scale shaft 23 and the rotating shaft 24, to ensure that when the rock drill 5 is drilling, if the locking force is insufficient, it can be adjusted in time to prevent the orientation from changing due to insufficient locking force, thereby ensuring the drilling angle of the rock drill 5 and preventing the drilling depth from changing due to changes in the angle.

[0059] Working principle: through the air leg 1, fix the fixed shaft 21, through the connecting shaft 22, through the scale shaft 23 and the rotating shaft 24, and fix it with a No. 1 nut 25, but do not completely limit the freedom of movement of the scale shaft 23 and the rotating shaft 24, so that the scale shaft 23 and the rotating shaft 24 can rotate around the axis of the rotating shaft 24, and be inserted into the ground to be drilled at a certain angle to fix it. After the drilling device is stable, the hollow groove 232 is provided on the scale shaft 23, and the scale shaft 2 is moved under the action of gravity. 3 Keep balance, two scale lines 231 on the scale shaft 23 will be horizontal, a pointer 241 is provided on the rotating shaft 24, and the pointer 241 is aligned with the scale line 231 to complete the calibration, and the rock drill 5 is rotated according to the hole to be drilled, and the rotation is adjusted every 15°. After the rock drill 5 is oriented, the bolt 31 is inserted into the first locking hole 211, the second locking hole 233 and the third locking hole 242, and fixed with the second nut 32, thereby limiting the freedom of movement of the scale shaft 23 and the rotating shaft 24, and completing the drilling. The rock gun 5 is oriented by sliding the first slider 331 and the second slider 334 into the mounting groove, so that they exert pressure on the first spring 332 and the second spring 335 respectively, so that the springs are contracted, and the pressure of the springs is detected by the first pressure sensor 333 and the second pressure sensor 336, and then the locking force of the bolt 31 and the second nut 32 on the fixed shaft 21, the scale shaft 23 and the rotating shaft 24 arranged in sequence is monitored, and water is pumped by the water pump 41 so that water can be transported along the water pipe 42, and the water pipe 42 is used to pump water. It is connected to the fixed shaft 21 and the rotating shaft 24, and is used to transport water to the No. 1 water outlet 213 and the No. 2 water outlet 244. By setting the No. 1 water outlet 213 and the No. 2 water outlet 244 into a trapezoidal body, and setting the inclination angles of the side surfaces of the trapezoidal body to different angles, the inclination angle of the side surface toward the connecting shaft 22 is greater than that of the side surface, so that more and faster water flows in the direction of the connecting shaft 22, ensuring that water can be flushed to the symmetry axis of the two No. 1 water outlets 213, so that the water flow can quickly complete the cleaning of the connection.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A tunnel anchor bolt drilling device with controllable drilling depth, characterized in that: The drilling device comprises an air leg (1), an orientation mechanism (2), a fixing mechanism (3), a cleaning mechanism (4) and a rock drill (5); the air leg (1) and the orientation mechanism (2) are fixedly connected, the orientation mechanism (2) and the fixing mechanism (3) are fixedly connected, the orientation mechanism (2) and the rock drill (5) are fixedly connected, and the cleaning mechanism (4) and the orientation mechanism (2) are fixedly connected.

2. A tunnel anchor bolt drilling device with controllable drilling depth according to claim 1, characterized in that: The orientation mechanism (2) comprises a fixed shaft (21), a connecting shaft (22), a scale shaft (23), a rotating shaft (24) and a No. 1 nut (25); the fixed shaft (21) and the connecting shaft (22) are fixedly connected; the scale shaft (23) and the connecting shaft (22) are rotatably connected; the rotating shaft (24) and the connecting shaft (22) are rotatably connected; the connecting shaft (22) is provided with an external thread; the No. 1 nut (25) is provided with an internal thread; the external thread and the internal thread are meshed; the rotating shaft (24) and the No. 1 nut (25) are slidably connected; the rotating shaft (24) and the scale shaft (23) are slidably connected; the fixed shaft (21) and the scale shaft (23) are slidably connected; the fixed shaft (21) and the gas leg (1) are fixedly connected; and the rotating shaft (24) and the rock drill (5) are fixedly connected.

3. The tunnel anchor bolt drilling device with controllable drilling depth according to claim 2, characterized in that: The scale shaft (23) is provided with a plurality of scale lines (231), wherein one scale line (231) is provided every 15 degrees. The scale shaft (23) is provided with a hollow groove (232), and the rotating shaft (24) is provided with a pointer (241).

4. The tunnel anchor bolt drilling device with controllable drilling depth according to claim 3, characterized in that: The fixing mechanism (3) comprises a bolt (31), a No. 2 nut (32) and a monitoring unit (33); the fixing shaft (21) is provided with a plurality of No. 1 locking holes (211); the scale shaft (23) is provided with a plurality of No. 2 locking holes (233); the rotating shaft (24) is provided with a plurality of No. 3 locking holes (242); the bolt (31) and the No. 2 nut (32) are threadedly connected; the bolt (31) and the No. 1 locking hole (211) are fixedly connected; the bolt (31) and the No. 2 locking hole (233) are fixedly connected; the bolt (31) and the No. 3 locking hole (242) are fixedly connected; two monitoring units (33) are provided; the fixing shaft (21) is provided with a No. 1 mounting groove (212); the monitoring unit (33) is placed in the No. 1 mounting groove (212); the rotating shaft (24) is provided with a No. 2 mounting groove (243); the monitoring unit (33) is placed in the No. 2 mounting groove (243).

5. The tunnel anchor bolt drilling device with controllable drilling depth according to claim 4, characterized in that: The monitoring unit (33) comprises a first slider (331), a first spring (332), a first pressure sensor (333), a second slider (334), a second spring (335) and a second pressure sensor (336); the first slider (331) is slidably connected to the first mounting groove (212); the first spring (332) is placed in the first mounting groove (212); the first spring (332) and the first slider (331) are fixedly connected; the first pressure sensor (333) is placed in the first mounting groove (212); In the mounting groove (212), the No. 1 pressure sensor (333) and the No. 1 spring (332) are fixedly connected, the No. 2 slider (334) and the No. 2 mounting groove (243) are slidably connected, the No. 2 spring (335) is placed in the No. 2 mounting groove (243), the No. 2 spring (335) and the No. 2 slider (334) are fixedly connected, the No. 2 pressure sensor (336) is placed in the No. 2 mounting groove (243), and the No. 2 pressure sensor (336) and the No. 2 spring (335) are fixedly connected.

6. The tunnel anchor bolt drilling device with controllable drilling depth according to claim 2, characterized in that: The cleaning mechanism (4) comprises a water pump (41) and a water pipe (42), wherein the water pump (41) and the water pipe (42) are fixedly connected, the fixed shaft (21) is provided with two No. 1 water outlets (213), the water pipe (42) and the No. 1 water outlets (213) are in communication, and the rotating shaft (24) is provided with two No. 2 water outlets (244), the water pipe (42) and the No. 2 water outlets (244) are in communication.

7. The tunnel anchor bolt drilling device with controllable drilling depth according to claim 6, characterized in that: The first water outlet (213) is in the form of a trapezoid, the side of the trapezoid facing the connecting shaft (22) having a greater inclination angle than the other side surfaces, and the second water outlet (244) is in the form of a rectangular platform, the side of the rectangular platform facing the connecting shaft (22) having a greater inclination angle than the other side surfaces.

8. The method for using the tunnel anchor drilling device with controllable drilling depth according to claim 7 is characterized in that: The method of use comprises the following steps: S1: fixed gas leg (1); S2: The locking force is evenly distributed through the cleaning mechanism (4) to ensure the locking effect of the fixing mechanism (3); S3: Orienting the rock drill (5) by means of the orientation mechanism (2), and after the orientation is completed, fixing the orientation of the rock drill (5) by means of the fixing mechanism (3); S4: The locking force of the directional mechanism (2) when the rock drill (5) is drilling is monitored in real time through the monitoring unit (33).

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