Core-pulling type drilling equipment for tunnel main hole top cleaning

Abstract

The utility model relates to the technical field of tunnel construction, in particular to core-pulling type drilling equipment for tunnel main hole top picking, which comprises a movable base, a drilling adjusting arm arranged on the movable base and a core-pulling type drilling unit connected to one end of the drilling adjusting arm, and the core-pulling type drilling unit is movably connected with the drilling adjusting arm. The other end of the drilling adjusting arm is movably connected with the movable base; the movable base is movably connected with the drilling adjusting arm, the drilling adjusting arm is used for adjusting the height of the core-pulling type drilling unit, and therefore the drilling requirements of different heights can be met in the main hole top brushing operation, scaffold building and dismantling are avoided, the construction cost and the construction difficulty are reduced, and the construction efficiency is improved; and meanwhile, the drilling angle of the core-pulling type drilling unit is adjusted through the drilling adjusting arm, so that the actual drilling requirement is met, manual drilling operation is replaced, the cost is reduced, it is guaranteed that construction is safe and reliable, and the actual construction requirement of main hole top brushing is met.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel roof jacking construction, and particularly relates to a core-pulling drilling device for tunnel main hole roof jacking. Background Technique

[0002] During the construction of extra-long tunnels, auxiliary adits are usually constructed on the side of the mountain body to improve the construction progress. When the auxiliary adit is constructed to the position of the main hole, roof jacking construction is required to open up the main hole heading face, and then the construction equipment enters the main hole for two-way excavation to improve the construction efficiency.

[0003] Since the roof jacking operation is a key and difficult point and a safety control point in tunnel engineering construction, it is necessary to cooperate with excavation equipment and a small-scale drill and blast method by construction personnel for hole digging. For example, the Chinese invention patent application with the application number 202410859879.9 provides a construction method for the roof jacking of the transverse passage of the parallel heading at the tunnel exit and the double-side drift method in the main hole, which records that the C-shaped section of the main hole is constructed by the three-step + temporary inverted arch method, and manual pneumatic leg rock drills are used for drilling and blasting; the excavation of the double-side drift method section of the main hole is carried out by manual cooperation with excavators and pneumatic picks. For local inclusion of rocky surrounding rock, a multi-functional operation bench is used, and manual YT28 pneumatic leg rock drills are used for blasting excavation.

[0004] By manually holding a rock drill for drilling operations, on the one hand, the number of operating personnel is relatively large, increasing the construction cost; on the other hand, when drilling operations are carried out at different heights by manual work, it is necessary to build a scaffolding, and the scaffolding needs to be rebuilt after the operation face moves forward, increasing the cost and the construction difficulty; and the difficulty of drilling with a rock drill is high, and the flying of stones will also affect the construction safety. After drilling, it is also necessary to flush and clean it, greatly reducing the construction efficiency and not meeting the current construction requirements. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a core-pulling drilling device for tunnel main hole roof jacking, so as to solve the technical problem of low roof jacking construction efficiency at present.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A core-pulling drilling device for tunnel main hole roof jacking includes a mobile base, a drilling adjusting arm arranged on the mobile base, and a core-pulling drilling unit connected to one end of the drilling adjusting arm. The core-pulling drilling unit is movably connected to the drilling adjusting arm, and the other end of the drilling adjusting arm is movably connected to the mobile base.

[0008] Further defined, the core-pulling drilling unit includes a hollow drill bit, a drilling machine, and a drilling angle adjusting mechanism; the hollow drill bit is detachably connected to the drilling machine, and the drilling machine is rotatably connected to the drilling adjusting arm through the drilling angle adjusting mechanism.

[0009] Further defined, the drilling angle adjustment mechanism includes a transfer arm, a hollow drill bit angle drive, and an L-shaped arm;

[0010] One side of the transfer arm is connected to the drilling adjustment arm. An angle drive clamping hole and a rotation hole are provided on the transfer arm. The fixed end of the hollow drill bit angle drive is connected to the transfer arm through the angle drive clamping hole. The output end of the hollow drill bit angle drive extends to the outside of the transfer arm. The long arm of the L-shaped arm is rotationally connected to the transfer arm through the rotation hole. The short arm of the L-shaped arm extends to the outside of the transfer arm and is connected to the drilling rig. The drilling rig is located on the other side of the transfer arm. The output end of the hollow drill bit angle drive is in transmission connection with the long arm of the L-shaped arm.

[0011] Further defined, the drilling adjustment arm includes an upper folding arm, a lower folding arm, an upper folding telescopic drive, and a lower folding telescopic drive;

[0012] The top end of the upper folding arm is connected to the drilling angle adjustment mechanism. The bottom end of the upper folding arm is rotationally connected to the top end of the lower folding arm through a first limit bolt. The upper folding telescopic drive is located outside the first limit bolt and is connected between the upper folding arm and the lower folding arm. The bottom end of the lower folding arm is rotationally connected to the moving base through a second limit bolt. The lower folding telescopic drive is located outside the second limit bolt and is connected between the moving base and the lower folding arm.

[0013] Further defined, the upper folding arm includes a first folding arm, a hydraulic drive, a pneumatic pump, and a second folding arm connected in sequence. The top end of the lower folding arm is rotationally connected to the bottom end of the first folding arm through a first limit bolt. The second folding arm is connected to the drilling angle adjustment mechanism.

[0014] Further defined, a folding arm adjustment mechanism is provided on the moving base. The moving base is slidably connected to the folding arm adjustment mechanism. The lower folding arm is rotationally connected to the moving base through the folding arm adjustment mechanism.

[0015] Further defined, the folding arm adjustment mechanism includes a lifting drive, a lifting slider, a folding arm rotation drive, and a rotation drive rod;

[0016] The moving base is slidably connected to the lifting slider through the lifting drive. The fixed end of the folding arm rotation drive is connected to the lifting slider. The output end of the folding arm rotation drive is in transmission connection with the rotation drive rod. One end of the rotation drive rod is rotationally connected to the lifting slider. The other end of the rotation drive rod is rotationally connected to the bottom end of the lower folding arm through a second limit bolt. The lower folding telescopic drive is connected between the rotation drive rod and the lower folding arm.

[0017] Further defined, a lifting chute is provided on the moving base. The lifting chute is slidably connected to the lifting slider. The lifting drive is located outside the lifting chute.

[0018] Further defined, the number of the drilling adjustment arms is at least two, and the numbers of the lifting sliding grooves, the core-pulling drilling units and the folding arm adjustment mechanisms are the same as that of the drilling adjustment arms. The drilling adjustment arms are connected between the corresponding lifting sliding grooves and the core-pulling drilling units through the folding arm adjustment mechanisms.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] 1. The utility model movably connects the moving base with the drilling adjustment arms and uses the drilling adjustment arms to adjust the height of the core-pulling drilling units. Thus, during the crown-heading operation in the main tunnel, the drilling requirements at different heights can be met, the scaffolding erection and removal can be avoided, the construction cost and difficulty can be reduced, and the construction efficiency can be improved. At the same time, the core-pulling drilling units are used for hole opening to avoid stone splashing, ensure construction safety, reduce the hole-opening flushing operation after the hole opening is completed, reduce the operation difficulty, and further improve the working efficiency, meeting the actual construction requirements of the crown-heading operation in the main tunnel.

[0021] 2. The utility model uses the drilling angle adjustment mechanism to realize the adjustment of the angle of the hollow drill bit during drilling, and at the same time uses the folding arm adjustment mechanism to realize the angle adjustment and height auxiliary adjustment of the drilling adjustment arms, so as to meet the drilling requirements at different angles. The operation is simple and the structure is simple, which is suitable for popularization and use.

[0022] 3. The utility model can realize the function of synchronous operation of multiple hollow drill bits by arranging a plurality of drilling adjustment arms on the moving base, thereby further improving the crown-heading operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a construction schematic diagram of the core-pulling drilling equipment for crown-heading operation in the main tunnel of the utility model;

[0024] Figure 2 is a three-dimensional structure diagram of the hollow drill bit of the utility model;

[0025] Figure 3 is a connection state diagram of the drilling angle adjustment mechanism and the drilling rig of the utility model;

[0026] Figure 4 is a three-dimensional structure diagram of the drilling adjustment arm of the utility model;

[0027] Figure 5 is a connection state diagram of the lifting sliding groove and the folding arm adjustment mechanism of the utility model;

[0028] In the figure: 100 - mobile base; 110 - lifting chute; 120 - lifting drive base; 200 - drilling adjustment arm; 210 - upper folding arm; 211 - first folding arm; 211a - upper folding chuck; 211b - upper folding diagonal support seat; 212 - hydraulic drive; 213 - pneumatic pump; 214 - second folding arm; 220 - lower folding arm; 220a - lower folding card slot; 220b - lower folding diagonal support seat; 220c - lower folding chuck; 221 - upper folding drive base; 230 - upper folding telescopic drive; 231 - first limit bolt; 232 - upper folding drive connection seat; 240 - lower folding telescopic drive; 240a - lower folding drive card slot; 240b - lower folding drive chuck; 241 - second limit bolt; 250 - folding arm connection head; 300 - core-pulling drilling unit; 310 - hollow drill bit; 311 - drill bit wall; 312 - drill teeth; 313 - drill bit connecting piece; 320 - drilling rig; 330 - drilling angle adjustment mechanism; 331 - adapter arm; 331a - first limit hole; 332 - hollow drill bit angle drive; 332a - third limit bolt; 332b - first driving gear; 333 - L-shaped arm; 333a - first driven gear; 334 - angle drive clamping hole; 335 - rotation hole; 336 - folding arm connection groove; 400 - folding arm adjustment mechanism; 410 - lifting drive; 411 - lifting drive connection seat; 420 - lifting slider; 421 - lifting drive sleeve; 430 - folding arm rotation drive; 431 - second driving gear; 432 - limit disc; 440 - rotation drive rod; 440a - drive rod card slot; 440b - drive rod diagonal support seat; 441 - second driven gear; 450 - connecting vertical plate; 451 - drive rod sleeve; A - main tunnel; B - roof-heading construction face; C - auxiliary adit. Detailed implementation mode

[0029] As Figure 1 shown, after tunneling along the longitudinal direction of the auxiliary adit C to the position where the main tunnel A is located, roof-heading construction needs to be carried out according to the arch structure of the main tunnel. At this time, a roof-heading construction face B is formed at the corresponding position of the main tunnel, which is convenient for subsequent construction equipment to carry out the excavation operation of the main tunnel along the roof-heading construction face B.

[0030] During the roof-heading operation, it is necessary to drill and then ream holes on the working surface facing the auxiliary adit C to achieve tunneling. Scaffolds are manually erected on-site for drilling operations at high positions. The operation risk is high, and the operation efficiency is low. If multiple people are involved in the operation, the operation cost will be increased.

[0031] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1

[0033] Reference Figure 1 , this embodiment provides a core-pulling drilling device for tunnel roof jacking, which is used to replace manual on-site drilling, reduce construction costs, and improve construction efficiency. It includes a mobile base 100, a drilling adjustment arm 200 arranged on the mobile base 100, and a core-pulling drilling unit 300 connected to one end of the drilling adjustment arm 200; the drilling adjustment arm 200 is movably connected to the mobile base 100, so that adjusting the drilling adjustment arm 200 can adjust the distance between the core-pulling drilling unit 300 and the working surface and the distance between the core-pulling drilling unit 300 and the tunnel roof, avoiding the erection of scaffolding and realizing the opening requirements at different heights of the working surface; the core-pulling drilling unit 300 is movably connected to the drilling adjustment arm 200, so that the core-pulling drilling unit 300 can adjust the angle between the drill hole and the working surface, thereby realizing the requirements of drilling at different angles, meeting the requirements of reaming drilling, and at the same time, it can also adjust the drilling angle according to the orientation of the upper end surface of the working surface to meet the actual drilling requirements, ensure the safety and reliability of drilling, and improve the efficiency of tunnel roof jacking operations.

[0034] At the same time, using the core-pulling drilling unit 300 for drilling can reduce the vibration generated by drilling through the crushing equipment, avoid the splashing of stones during the crushing process, and ensure the safety of the operation; at the same time, using the core-pulling drilling unit 300 can realize drilling and core extraction, avoid excessive residual debris in the drill hole, and at the same time, it can also avoid the operation of purging and cleaning the drill hole, reduce the drilling difficulty, and improve the overall efficiency of the roof jacking operation.

[0035] Specifically, the core-pulling drilling unit 300 includes a hollow drill bit 310, a drill rig 320, and a drilling angle adjustment mechanism 330. The hollow drill bit 310 is movably connected to the drilling angle adjustment mechanism 330 through the drill rig 320, and the drilling angle adjustment mechanism 330 is connected to the drilling adjustment arm 200.

[0036] Reference Figure 2 , the hollow drill bit 310 includes a drill bit wall 311, drill teeth 312, and a drill bit connecting piece 313. The drill teeth 312 are arranged in an array around the axis of the drill bit wall 311 at one end of the drill bit wall 311, and the drill bit connecting piece 313 is arranged at the other end of the drill bit wall 311. The drill bit connecting piece 313 is detachably connected to the output end of the drill rig 320, and the connection method can be selected as threaded connection or clamping, etc.

[0037] The drilling angle adjustment mechanism 330 can cooperate with the reduction gear through rotational drive to control the rotation of the fixed end of the drilling rig 320 about the axis perpendicular to its own central axis, so as to adjust the pitching angle of the hollow drill bit 310 by adjusting the pitching angle of the drilling rig 320.

[0038] Reference Figure 3 , the drilling angle adjustment mechanism 330 includes a transfer arm 331, a hollow drill bit angle drive 332 and an L-shaped arm 333. An angle drive clamping hole 334 and a rotation hole 335 are provided on the transfer arm 331.

[0039] One end of the transfer arm 331 is provided with a folding arm connection groove 336, and the transfer arm 331 is connected to the drilling adjustment arm 200 through the folding arm connection groove 336.

[0040] The hollow drill bit angle drive 332 cooperates with the angle drive clamping hole 334, and the shape of the angle drive clamping hole 334 matches the outer shape of the fixed end of the hollow drill bit angle drive 332. For example, the cross-section of the angle drive clamping hole 334 can be selected as rectangular or polygonal to prevent the hollow drill bit angle drive 332 from rotating itself.

[0041] At the same time, a first limiting hole 331a is provided on the transfer arm 331, and the first limiting hole 331a communicates with the angle drive clamping hole 334. A second limiting hole is provided at the fixed end of the hollow drill bit angle drive 332. After the hollow drill bit angle drive 332 is installed in the angle drive clamping hole 334, a third limiting bolt 332a is used to pass through the first limiting hole 331a and connect with the second limiting hole to ensure the stable connection between the hollow drill bit angle drive 332 and the transfer arm 331; the output end of the hollow drill bit angle drive 332 extends to the outside of the transfer arm 331.

[0042] The L-shaped arm 333 is of an L-shaped structure. The long arm of the L-shaped arm 333 is rotationally connected to the transfer arm 331 through the rotation hole 335. The short arm of the L-shaped arm 333 is located outside the transfer arm 331, and the end of the short arm of the L-shaped arm 333 is connected to the fixed end of the drilling rig 320, so that the drilling rig 320 can rotate around the axis of the rotation hole 335 to realize the adjustment of the pitching angle; preferably, the end of the short arm of the L-shaped arm 333 is detachably connected to the drilling rig 320.

[0043] At this time, a first driving gear 332b is provided on the output end of the hollow drill bit angle drive 332, and a first driven gear 333a is provided at the end of the long side of the L-shaped arm 333. The first driving gear 332b meshes with the first driven gear 333a, so as to realize the adjustment of the pitching angle of the hollow drill bit 310 by controlling the rotation direction of the output end of the hollow drill bit angle drive 332, and the operation is simple.

[0044] Reference Figure 4, the drilling adjustment arm 200 includes an upper folding arm 210, a lower folding arm 220, an upper folding telescopic drive 230 and a lower folding telescopic drive 240. A folding arm connector 250 is provided at the top end of the upper folding arm 210. The folding arm connector 250 is clamped to the folding arm connection groove 336 by a fourth limit bolt. The bottom end of the upper folding arm 210 is rotatably connected to the top end of the lower folding arm 220 by a first limit bolt 231. At this time, an upper folding chuck 211a is provided at the bottom end of the upper folding arm 210, and a lower folding slot 220a that cooperates with the upper folding chuck 211a is provided at the top end of the lower folding arm 220. The upper folding chuck 211a is rotatably connected to the lower folding slot 220a by a first limit bolt 231.

[0045] The upper folding telescopic drive 230 is located outside the first limit bolt 231, and the upper folding telescopic drive 230 is connected between the upper folding arm 210 and the lower folding arm 220; an upper folding drive base 221 is provided on the lower folding arm 220. The upper folding drive base 221 is close to the lower folding slot 220a. An upper folding diagonal support base 211b is provided on the upper folding arm 210. The upper folding diagonal support base 211b is close to the upper folding chuck 211a. At this time, an upper folding drive connection seat 232 is provided at the bottom of the upper folding telescopic drive 230. The upper folding drive connection seat 232 is connected to the upper folding drive base 221, and the top of the upper folding telescopic drive 230 is hinged to the upper folding diagonal support base 211b.

[0046] At the same time, a lower folding chuck 220c is provided at the bottom end of the lower folding arm 220. The lower folding chuck 220c is rotatably connected to the moving base 100 by a second limit bolt 241; a lower folding diagonal support base 220b is provided on the lower folding arm 220. The lower folding telescopic drive 240 is located outside the second limit bolt 241. A lower folding drive slot 240a is provided at the top of the lower folding telescopic drive 240. The lower folding drive slot 240a is hinged to the lower folding diagonal support base 220b. A lower folding drive chuck 240b is provided at the bottom of the lower folding telescopic drive 240. The lower folding drive chuck 240b is rotatably connected to the moving base 100.

[0047] By the telescoping of the upper folding telescopic drive 230 and the telescoping of the lower folding telescopic drive 240, the angle between the upper folding arm 210 and the lower folding arm 220 and the angle between the lower folding arm 220 and the horizontal direction are controlled, and the height of the core-pulling drilling unit 300 at the top end of the lower folding arm 220 and the distance from the working surface are adjusted to meet the drilling requirements at different heights on the working surface.

[0048] Further explanation, in order to ensure the hole-drilling efficiency of the hollow drill bit 310, the upper folding arm 210 includes a first folding arm 211, a hydraulic drive 212, a pneumatic pump 213 and a second folding arm 214 connected in sequence, wherein the upper folding clamp 211a is located at the bottom end of the first folding arm 211, the upper folding oblique support 211b is located at the bottom of the first folding arm 211, and the folding arm connecting head 250 is located at the top of the second folding arm 214; when drilling, the hydraulic drive 212 and the pneumatic pump 213 are used to provide reliable support force to the hollow drill bit 310.

[0049] The mobile base 100 is preferably movable, for example, mobile wheels are provided at the bottom of the mobile base 100 to facilitate forward and backward movement and left and right movement; in order to reduce the frequent left and right adjustment of the position of the mobile base 100 during the top-picking operation of the main hole, the drilling adjustment arm 200 is preferably capable of driving the core-pulling drilling unit 300 to move left and right, thereby increasing the hole opening range of the core-pulling drilling unit 300.

[0050] At this time, the drilling adjustment arm 200 is rotatably connected to the moving base 100 through the folding arm adjustment mechanism 400.

[0051] refer to Figure 5 Specifically, the folding arm adjustment mechanism 400 includes a folding arm rotation drive 430 and a rotation drive rod 440. The fixed end of the folding arm rotation drive 430 is provided with a connecting vertical plate 450. The folding arm rotation drive 430 is connected to the mobile base 100 through the connecting vertical plate 450. A driving rod sleeve 451 is provided on the connecting vertical plate 450. The driving rod sleeve 451 is located on one side of the folding arm rotation drive 430. One end of the rotation drive rod 440 is rotatably connected to the connecting vertical plate 450 through the driving rod sleeve 451. The other end is provided with a driving rod slot 440a, which is hinged to the lower folding clamp 220c, and a driving rod oblique support seat 440b is provided on the rotating driving rod 440, which is close to the driving rod slot 440a, and the driving rod oblique support seat 440b is hinged to the lower folding driving clamp 240b. The rotating driving rod 440 is transmission-connected with the folding arm rotating drive 430, and is used to drive the drilling adjustment arm 200 to rotate around the axis of the rotating driving rod 440, thereby increasing the hole opening range and further improving the working efficiency.

[0052] At this time, a second driving gear 431 can be optionally set at the output end of the folding arm rotation drive 430, and a second driven gear 441 meshing with the second driving gear 431 can be set on the rotation drive rod 440. In order to ensure stable and reliable transmission, a limit plate 432 is selected to be set on the outer end face of the second driving gear 431. The limit plate 432 is coaxially arranged with the second driving gear 431. The diameter of the limit plate 432 is larger than the diameter of the second driving gear 431, so that the limit plate 432 covers the side end of the second driven gear 441, which is used to limit the movement of the second driven gear 441 along its axial direction.

[0053] Further explanation, in order to further increase the opening range of the drilling adjustment arm 200, the folding arm adjustment mechanism 400 further includes a lifting drive 410 and a lifting slider 420, and the lifting slider 420 is connected to the connecting vertical plate 450; at this time, a lifting drive connection seat 411 is provided at the bottom of the lifting drive 410, a lifting drive sleeve 421 is provided at the bottom of the lifting slider 420, the top of the lifting drive 410 is clamped with the lifting drive sleeve 421, and the lifting slider 420 is also slidably connected to the moving base 100 in the vertical direction. At the same time, a lifting drive base 120 is provided on the moving base 100, and the lifting drive 410 is detachably connected to the lifting drive base 120 through the lifting drive connection seat 411, thereby further increasing the opening range of the drilling adjustment arm 200 in the vertical direction.

[0054] A lifting chute 110 is correspondingly opened on the moving base 100. Preferably, one end of the lifting slider 420 cooperates with the lifting chute 110, so that the lifting slider 420 can slide up and down along the lifting chute 110 and is restricted in the lifting chute 110. The lifting drive base 120 is located outside the lifting chute 110, and the lifting drive sleeve 421 is located at the other end of the lifting slider 420, that is, the lifting drive sleeve 421 is located outside the lifting chute 110.

[0055] Embodiment 2

[0056] Based on Embodiment 1, for the core-pulling drilling equipment for tunnel roof jacking provided in this embodiment, the number of drilling adjustment arms 200 can be selected as one, or can also be selected as two or more. When the number of drilling adjustment arms 200 is two or more, the drilling adjustment arms 200 are arranged at intervals in the horizontal direction on the moving base 100; referring to Figure 5 , taking two drilling adjustment arms 200 as an example for explanation.

[0057] Correspondingly, the number of the lifting chutes 110, the number of the core-pulling drilling units 300, and the number of the folding arm adjustment mechanisms 400 are the same as the number of the drilling adjustment arms 200, so that a plurality of core-pulling drilling units 300 are movably connected to the folding arm adjustment mechanisms 400 through the corresponding drilling adjustment arms 200, and the folding arm adjustment mechanisms 400 are connected to the moving base 100 through the corresponding lifting chutes 110, thereby realizing synchronous drilling operations of a plurality of core-pulling drilling units 300 and further improving the efficiency of the tunnel roof jacking operation.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A core-extracting drilling device for tunnel roof jacking in the main tunnel, characterized in that, It includes a mobile base (100), a drilling adjustment arm (200) arranged on the mobile base (100), and a core-pulling drilling unit (300) connected to one end of the drilling adjustment arm (200). The core-pulling drilling unit (300) is movably connected to the drilling adjustment arm (200), and the other end of the drilling adjustment arm (200) is movably connected to the mobile base (100).

2. The core-extracting drilling equipment for tunnel roof jacking according to claim 1, wherein The core-pulling drilling unit (300) includes a hollow drill bit (310), a drilling rig (320), and a drilling angle adjustment mechanism (330); the hollow drill bit (310) is detachably connected to the drilling rig (320), and the drilling rig (320) is rotatably connected to the drilling adjustment arm (200) through the drilling angle adjustment mechanism (330).

3. The core-extracting drilling equipment for tunnel roof jacking according to claim 2, characterized in that, The drilling angle adjustment mechanism (330) includes a transfer arm (331), a hollow drill bit angle drive (332), and an L-shaped turning arm (333); One side of the transfer arm (331) is connected to the drilling adjustment arm (200). An angle drive clamping hole (334) and a rotation hole (335) are provided on the transfer arm (331). The fixed end of the hollow drill bit angle drive (332) is connected to the transfer arm (331) through the angle drive clamping hole (334). The output end of the hollow drill bit angle drive (332) extends to the outside of the transfer arm (331). The long arm of the L-shaped turning arm (333) is rotatably connected to the transfer arm (331) through the rotation hole (335). The short arm of the L-shaped turning arm (333) extends to the outside of the transfer arm (331) and is connected to the drilling rig (320). The drilling rig (320) is located on the other side of the transfer arm (331). The output end of the hollow drill bit angle drive (332) is in transmission connection with the long arm of the L-shaped turning arm (333).

4. The core-extracting drilling equipment for tunnel roof jacking according to claim 2, characterized in that, The drilling adjustment arm (200) includes an upper folding arm (210), a lower folding arm (220), an upper folding telescopic drive (230), and a lower folding telescopic drive (240); The top end of the upper folding arm (210) is connected to the drilling angle adjustment mechanism (330). The bottom end of the upper folding arm (210) is rotatably connected to the top end of the lower folding arm (220) through a first limit bolt (231). The upper folding telescopic drive (230) is located outside the first limit bolt (231), and the upper folding telescopic drive (230) is connected between the upper folding arm (210) and the lower folding arm (220). The bottom end of the lower folding arm (220) is rotatably connected to the mobile base (100) through a second limit bolt (241). The lower folding telescopic drive (240) is located outside the second limit bolt (241), and the lower folding telescopic drive (240) is connected between the mobile base (100) and the lower folding arm (220).

5. The core-pulling drilling equipment for tunnel roof jacking according to claim 4, characterized in that, The upper folding arm (210) includes a first folding arm (211), a hydraulic drive (212), a pneumatic pump (213), and a second folding arm (214) connected in sequence. The top end of the lower folding arm (220) is rotatably connected to the bottom end of the first folding arm (211) through a first limit bolt (231), and the second folding arm is connected to the drilling angle adjustment mechanism (330).

6. The core-extracting drilling equipment for tunnel roof jacking according to any one of claims 2 to 5, characterized in that, A folding arm adjusting mechanism (400) is provided on the mobile base (100). The mobile base (100) is slidably connected to the folding arm adjusting mechanism (400), and the lower folding arm (220) is rotatably connected to the mobile base (100) through the folding arm adjusting mechanism (400).

7. The core-pulling drilling equipment for tunnel roof lifting according to claim 6, wherein, The folding arm adjusting mechanism (400) includes a lifting drive (410), a lifting slider (420), a folding arm rotation drive (430), and a rotation drive rod (440). The mobile base (100) is slidably connected to the lifting slider (420) through the lifting drive (410). The fixed end of the folding arm rotation drive (430) is connected to the lifting slider (420), and the output end of the folding arm rotation drive (430) is in transmission connection with the rotation drive rod (440). One end of the rotation drive rod (440) is rotatably connected to the lifting slider (420), and the other end of the rotation drive rod (440) is rotatably connected to the bottom end of the lower folding arm (220) through a second limit bolt (241). The lower folding telescopic drive (240) is connected between the rotation drive rod (440) and the lower folding arm (220).

8. The core-extracting drilling equipment for tunnel roof jacking according to claim 7, characterized in that, A lifting chute (110) is formed on the mobile base (100). The lifting chute (110) is slidably connected to the lifting slider (420), and the lifting drive (410) is located outside the lifting chute (110).

9. The core-extracting drilling equipment for tunnel roof lifting according to claim 8, wherein The number of the drilling adjusting arms (200) is at least two. The number of the lifting chutes (110), the number of the core-pulling drilling units (300), and the number of the folding arm adjusting mechanisms (400) are all the same as the number of the drilling adjusting arms (200). The drilling adjusting arms (200) are connected between the corresponding lifting chutes (110) and the core-pulling drilling units (300) through the folding arm adjusting mechanisms (400).

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