A tunnel construction rock drilling apparatus

Abstract

The present application belongs to the technical field of tunnel rock drilling equipment, and discloses a tunnel construction rock drilling equipment, which comprises a rack, a rock drilling assembly, a driving assembly one, a transmission assembly and a stabilizing assembly arranged on the rack. The rotation of the rock drilling assembly can drive the transmission assembly, and the transmission assembly can convert the rotation into multiple forces to make the annular drill bit of the stabilizing assembly rotate into the ground. The annular drill bit can be rotated into the ground before drilling to provide stable support. Since the annular drill bit has an annular structure, it can be reliably centered and limited with the rock and soil. This can make the rock drilling assembly more stable and reliable during drilling, improve the accuracy of drilling, avoid deviation, and provide stable support by penetrating the rock and soil. The need for counterweight or hydraulic support for drilling is avoided, which greatly reduces the volume, weight and cost of the equipment, and the structure is compact and reasonable.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel rock drilling equipment, and particularly relates to a tunnel construction rock drilling equipment. BACKGROUND

[0002] In tunnel construction, the inner wall or the inner road of the tunnel needs to be selected and drilled or sampled for detection. Some components or pipelines can be buried through drilling, and the construction record or tunnel quality and safety can be arranged according to the rock stratum condition through sampling detection. Therefore, a rock drilling equipment is needed.

[0003] In the prior art, in order to realize more stable drilling of the drilling equipment, the rock drilling equipment is usually counterweighted by increasing the weight of the machine body or supported by an external hydraulic support to improve the stability in the drilling process. However, such a way often makes the whole equipment bulky and complex in structure, and the stability in the drilling process is poor, which is not conducive to improving the accuracy of drilling. Moreover, the current rock drilling equipment has a single function, only having the functions of drilling or sampling, and has a single application scene. SUMMARY

[0004] Therefore, the present application aims to provide a tunnel construction rock drilling equipment to solve the problem of poor stability of the existing rock drilling device in the drilling process.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A tunnel construction rock drilling equipment, comprising a rack, a rock drilling assembly, a driving assembly one, a transmission assembly and a stabilizing assembly arranged on the rack, the rock drilling assembly comprising a drill rod, a drill bit and a driving assembly two, the driving assembly two connecting the drill bit through the drill rod to drive the drill bit to rotate, the driving assembly one driving the rock drilling assembly to move and switch between at least a working position one and a working position two, the rock drilling assembly being in transmission connection with the transmission assembly through the meshing structure to drive the transmission assembly when in the working position one, and the rock drilling assembly being in transmission disconnection with the transmission assembly to move along the drilling direction through the driving assembly two for drilling when in the working position two.

[0007] The transmission assembly comprises a transmission seat, a transmission member one and a transmission member two, the transmission seat being in the form of a ring structure and being rotatably arranged outside the drill rod, the transmission seat being in transmission connection with the drill rod through the meshing structure, the transmission seat being provided with a transmission part one and a transmission part two in the axial direction, the transmission member one being in the form of a ring structure and being threadedly fitted outside the transmission part one to move up and down in the axial direction, the transmission member two being in the form of a ring structure and being fitted outside the transmission part two, the transmission member two being in sliding fit with the transmission part two in the axial direction and being in stop in the circumferential direction, the transmission member one being in rotational connection with the transmission member two to drive the transmission member two to move up and down when the transmission member one moves up and down while the transmission seat rotates.

[0008] The stabilizing assembly comprises a ring-shaped drill bit connected to the second transmission member in the axial direction.

[0009] In a possible implementation, the outer circumferential surface of the ring-shaped drill bit is provided with a spiral screw.

[0010] In a possible implementation, the second transmission member is provided with a ring-shaped sliding rail in the circumferential direction, and the ring-shaped sliding rail is slidingly fitted with a ring-shaped sliding seat, and a plurality of elastic buffer components are arranged on the ring-shaped sliding seat in the circumferential direction, and the ring-shaped sliding seat is connected to the first transmission member through the elastic buffer components.

[0011] In a possible implementation, the stabilizing assembly further comprises a support member in a ring-shaped structure, which is movably arranged on the rack and located outside the ring-shaped drill bit, and the support member comprises a support portion for pressing against the ground, and when the ring-shaped drill bit is in a stable state of being screwed into the ground, the support portion of the support portion is pressed against the ground.

[0012] In a possible implementation, the support member is arranged on the rack to be elastically movable in the longitudinal direction through a return spring, and the top of the support member is provided with a ring-shaped track, and the ring-shaped drill bit is provided with a sliding fitting portion extending therefrom to cooperate with the ring-shaped sliding rail, so as to drive the support member to press against the ground in the screwing direction during the screwing of the ring-shaped drill bit.

[0013] In a possible implementation, the engagement structure comprises a sliding tooth portion one arranged on the inner wall of the transmission seat in the circumferential direction and a sliding tooth portion two arranged on the outer wall of the drill rod in the circumferential direction, the sliding tooth portion one is engaged with the sliding tooth portion two when the rock drilling assembly is in the working position one, and the sliding tooth portion one is disengaged from the sliding tooth portion two in the axial direction when the rock drilling assembly is switched from the working position one to the working position two to release the transmission.

[0014] In a possible implementation, the sliding tooth portion one and the sliding tooth portion two each comprise a plurality of sliding teeth distributed in the circumferential direction, and the top end and the low end of the sliding teeth are each provided with a guide structure, so that the sliding teeth of the sliding tooth portion one and the sliding teeth of the sliding tooth portion two can be engaged in the axial direction through the guide structure.

[0015] In a possible implementation, the driving assembly one comprises a lifting seat, a screw elevator and a guide rod, the lifting seat is slidingly arranged on the rack through the guide rod, the screw elevator is connected between the rack and the lifting seat to drive the lifting seat to make lifting action along the guide rod, and the rock drilling assembly is arranged on the lifting seat.

[0016] In a possible implementation, the drill bit is a sampling drill bit and a drilling drill bit, and the drill bit is connected with the drill rod through the connecting assembly.

[0017] The connecting assembly comprises a connecting disc one, a connecting disc two, a reinforcing disc one, a reinforcing disc two and a fastener, the bottom end of the drill rod is fixed with the connecting disc one, the drill bit is fixed with the connecting disc two which is butted with the connecting disc one, the reinforcing disc one is axially covered on the connecting disc one, the reinforcing disc two is axially covered on the connecting disc two, the reinforcing disc one and the reinforcing disc two are both provided with a plurality of limiting teeth which are distributed in the circumferential direction, the limiting teeth of the reinforcing disc one and the limiting teeth of the reinforcing disc two are axially engaged, and the fastener fixes the connecting disc one, the connecting disc two, the reinforcing disc one and the reinforcing disc two in series along the direction parallel to the axial direction.

[0018] In the possible implementation, a plurality of reinforcing blocks one are arranged in the circumferential direction between the drill rod and the connecting disc one, the reinforcing disc one is axially provided with a plurality of limiting openings one through which the reinforcing blocks one pass, a plurality of reinforcing blocks two are arranged in the circumferential direction between the drill bit and the connecting disc two, and the reinforcing disc two is axially provided with a plurality of limiting openings two through which the reinforcing blocks two pass.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The tunnel construction rock drilling equipment can drive the transmission assembly by rotating the rock drilling assembly, the transmission assembly can convert the rotation into multiple forces for rotating the annular drill bit into the ground, the annular drill bit can be rotated into the ground to be stably supported before drilling, the annular drill bit can be reliably centered and limited by the rock-soil cooperation, the rock drilling assembly is more stable and reliable during drilling, the accuracy of drilling is improved, deviation is avoided, the rock drilling equipment is stably supported by penetrating into the rock-soil, the need for counterweight or hydraulic support is avoided, the volume, weight and cost of the equipment are greatly reduced, and the structure is compact and reasonable.

[0021] Moreover, the rotation screw arranged on the annular drill bit can improve the stability of the annular drill bit and the rock-soil layer, further improve the stability of drilling, and the annular drill bit can be damped by the elastic damping member, the support member can be pressed against the ground to support the annular drill bit during rotation, and the combination of the two can significantly improve the support effect.

[0022] Meanwhile, the drill bit can be replaced by a drilling bit or a sampling bit, the use scene is expanded, the use is more convenient, the problem of easy breakage due to excessive torque between the connecting discs is avoided by arranging the reinforcing disc one and the reinforcing disc two, the connection strength is improved, and the equipment is easy to disassemble and assemble.

[0023] In addition, the device has small overall volume, light weight, low cost, excellent drilling stability, can greatly reduce the overall weight and volume of the device, and has outstanding stability for a mobile structure, avoiding the problem of needing to set many driving mechanisms. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a front view of a tunnel construction rock drilling device;

[0025] Figure 2 is a sectional view of a tunnel construction rock drilling device;

[0026] Figure 3 is a schematic view of a tunnel construction rock drilling device when the rock drilling assembly is in the energized position one;

[0027] Figure 4 is a schematic view of a tunnel construction rock drilling device when the rock drilling assembly is in the energized position one and the ring-shaped drill bit cuts into the ground below;

[0028] Figure 5 is a schematic view of a tunnel construction rock drilling device when the rock drilling assembly is in the energized position two and the rock drilling assembly drills;

[0029] Figure 6 is a perspective view of a ring-shaped drill bit of a tunnel construction rock drilling device;

[0030] Figure 7 is a perspective view of a transmission seat of a tunnel construction rock drilling device;

[0031] Figure 8 is a sectional view of a tunnel construction rock drilling device when the drill rod is connected to the drill bit through the connecting assembly;

[0032] Figure 9 is Figure 8 a front view of the structure shown;

[0033] Figure 10 is a schematic view of a sliding tooth of a tunnel construction rock drilling device.

[0034] In the figure: 1-frame; 11-box door; 2-rock drilling assembly; 21-driving assembly two; 22-drill rod; 23-drill bit; 24-connection assembly; 241-connection disc one; 242-connection disc two; 243-strengthening disc one; 244-strengthening disc two; 245-limiting tooth; 247-fastener; 248-limiting port one; 249-strengthening block one; 2410-strengthening block two; 2411-limiting port two; 3-driving assembly one; 31-lifting seat; 32-screw elevator; 33-guide rod; 4-transmission assembly; 41-transmission member one; 42-transmission member two; 43-limiting rod; 44-annular slide rail; 45-annular slide seat; 46-elastic buffer component; 47-transmission seat; 471-transmission part one; 472-transmission part two; 473-sliding bar; 474-thread structure; 5-stabilizing assembly; 51-annular drill bit; 511-lead screw; 52-convex ring; 53-roller; 54-supporting member; 55-annular track; 56-return spring; 6-engagement structure; 61-sliding tooth part one; 62-sliding tooth part two; 63-sliding tooth; 64-guiding structure. DETAILED DESCRIPTION

[0035] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with specific embodiments.

[0036] Please refer to Figures 1-7 The embodiment of the present application provides a tunnel construction rock drilling equipment, which comprises a frame 1 and a rock drilling assembly 2, a driving assembly one 3, a transmission assembly 4 and a stabilizing assembly 5 arranged on the frame 1.

[0037] The rock drilling assembly 2, the driving assembly one 3, the transmission assembly 4 and the stabilizing assembly 5 are all arranged on the frame 1, which can be movable or immovable. The rock drilling assembly 2 is used for drilling or sampling, and can perform rock drilling operation by lead screw. The driving assembly one 3 is used for driving the rock drilling assembly 2 to lift, and can perform drilling by lifting, and can switch the rock drilling assembly 2 between a working position one and a working position two by lifting. The transmission assembly 4 is used for converting the rotating force of the rock drilling assembly 2 in the working position one into double-acting force of simultaneously driving along the axial direction and rotating around the axial direction, so as to make the stabilizing assembly 5 drill into the ground below to support. The stabilizing assembly 5 is driven by the transmission assembly 4 to act, and drills into the rock and soil below the ground by lead screw to stabilize and support.

[0038] In the embodiments of the present application, the rock drilling assembly 2 comprises a drill rod 22, a drill bit 23, and a driving assembly two 21 connecting the drill bit 23 with the drill rod 22 to drive the drill bit 23 to rotate, the driving assembly one 3 drives the rock drilling assembly 2 to switch between the working position one and the working position two, when the rock drilling assembly 2 is in the working position one, the drill rod 22 is connected with the transmission assembly 4 through the engagement structure 6 to drive the transmission assembly 4, and when the rock drilling assembly 2 is in the working position two, the rock drilling assembly 2 is disconnected with the transmission assembly 4 to drill along the drilling direction by the driving assembly two 21.

[0039] The driving assembly two 21 drives the drill bit 23 to rotate by driving the drill rod 22 to rotate. The driving assembly one 3 drives the rock drilling assembly 2 to switch between the working position one and the working position two, when the rock drilling assembly 2 is in the working position one, the drill rod 22 is connected with the transmission assembly 4 through the engagement structure 6 to drive the transmission assembly 4, and when the rock drilling assembly 2 is in the working position two, the rock drilling assembly 2 is disconnected with the transmission assembly 4 to drill along the drilling direction by the driving assembly two 21.

[0040] In order to convert the rotating force of the rock drilling assembly 2 into multiple forces for driving the annular drill bit 51 to rotate when the rock drilling assembly 2 only rotates, the transmission assembly 4 can comprise a transmission seat 47, a transmission member one 41, and a transmission member two 42. The transmission seat 47 is annular and is arranged outside the drill rod 22. The transmission seat 47 is connected with the drill rod 22 through the engagement structure 6. The transmission seat 47 is provided with a transmission part one 471 and a transmission part two 472 along the axial direction. The transmission member one 41 is annular and is threadedly fitted outside the transmission part one 471 to move up and down along the axial direction. The transmission member two 42 is annular and is fitted outside the transmission part two 472. The transmission member two 42 is slidingly fitted with the transmission part two 472 along the axial direction and is locked in the circumferential direction. The transmission member one 41 is connected with the transmission member two 42 to drive the transmission member two 42 to move up and down when the transmission member one 41 moves up and down. The stability assembly 5 comprises the annular drill bit 51 connected with the transmission member two 42 along the axial direction.

[0041] The annular transmission seat 47 is rotatable on the frame 1, is arranged outside the drill rod 22, and can be engaged with the drill rod 22 through the engagement structure 6 to establish a transmission connection. The transmission seat 47 is axially provided with a transmission part one 471 and a transmission part two 472. The transmission part one 471 is provided with a threaded structure 474 and is threadedly connected with the transmission member one 41. Under the threaded transmission action, the transmission member one 41, which is circumferentially stopped, can move axially, that is, can move up and down axially. The transmission member two 42 can only move axially on the transmission part two 472 and is circumferentially stopped from each other. Thus, the transmission member two 42 can rotate synchronously with the transmission seat 47 and can move up and down axially. Specifically, the transmission member two 42 is slidably connected with the transmission part two 472 through a longitudinally extending slide bar 473. Since the transmission member two 42 is rotatably connected with the transmission member one 41, when the transmission member one 41 moves up and down axially, the transmission member two 42 also moves up and down axially, and simultaneously rotates with the transmission seat 47. In this way, the rotation force of the rock drilling assembly 2 can be converted into a multiple force for driving the annular drill bit 51 to rotate and move up and down by the transmission assembly 4. Thus, the rock drilling assembly 2 can drive the stabilizing assembly 5 in the process of drilling rock, fully utilizes the rotation function of the rock drilling assembly 2, avoids the need to set a complex multiple driving mechanism to drive the stabilizing assembly 5, and has a compact structure and good transmission effect.

[0042] It can be understood that the annular drill bit 51 is in an annular structure, which can also be referred to as a cylindrical structure. Such a structure can be limited in the radial direction after being rotated into the rock and soil, that is, can avoid deviation in each direction perpendicular to the drilling axis, so that the drill bit 23 can be stably centered during drilling, and the annular drill bit 51 can be embedded in the rock and soil in the form of an annular structure, so that the annular drill bit 51 is not easily pulled out under the pressure of the rock and soil. Thus, the stability of drilling rock can be improved.

[0043] Through the above technical solution, the rotation of the rock drilling assembly 2 can drive the transmission assembly 4. The transmission assembly 4 can convert the rotation into a multiple force for rotating the annular drill bit 51 of the stabilizing assembly 5. The annular drill bit 51 can be rotated into the ground before drilling to stably support the ground. Since the annular drill bit 51 is in an annular structure, it can be reliably centered and limited with the rock and soil. Thus, the rock drilling assembly 2 can be more stable and reliable during drilling, which is beneficial to improve the accuracy of drilling and avoid deviation. The annular drill bit 51 can be stably supported by penetrating into the rock and soil, so that the need to set a counterweight or hydraulic support for drilling can be avoided, and the volume, weight, and cost of the equipment can be greatly reduced. The structure is compact and reasonable in design.

[0044] In an embodiment, the annular drill bit 51 is arranged on the transmission seat 47. Figure 6As shown, the outer circumferential surface of the annular drill bit 51 is provided with a screwing spiral 511.

[0045] The annular drill bit 51 provided with the screwing spiral 511 can be more beneficial to drill into the rock-soil and can be better engaged with the rock-soil after drilling, further improving the anti-pulling effect, thus obtaining better stable support, while the annular drill bit 51 can also be conveniently screwed out when reversely rotating, being more practical.

[0046] In the specific implementation process, different annular drill bits 51 can be selected according to different stratum structures on site, for example, in the geological conditions where the soil layer is thicker or the rock layer is relatively soft, the blade part at the bottom end of the annular drill bit 51 can adopt a traditional drill bit structure, while for the geological conditions where the rock layer is thicker or harder, the bottom end of the annular drill bit 51 can be provided with a toothed knife structure, which can be selected and configured according to actual conditions or requirements, and is not limited.

[0047] In addition, the screwing spiral 511 on the annular drill bit 51 can be continuous or intermittent.

[0048] In order to realize the rotary connection of the first transmission member 41 and the second transmission member 42, in combination with Figure 3 As shown, the second transmission member 42 is provided with an annular slide rail 44 in the circumferential direction, the annular slide rail 44 is slidably connected with an annular slide seat 45, a plurality of elastic buffer components 46 are arranged on the annular slide seat 45 in the circumferential direction, and the annular slide seat 45 is connected with the first transmission member 41 through the elastic buffer components 46.

[0049] In this way, the annular slide rail 44 of the second transmission member 42 can be slidably connected with the annular slide seat 45, and the annular slide seat 45 is connected with the first transmission member 41 through the plurality of elastic buffer components 46, so that the first transmission member 41 can be rotatably connected with the second transmission member 42 without interfering with each other, that is, the first transmission member 41 will not rotate together with the second transmission member 42 when only making lifting action, and the second transmission member 42 also makes lifting action when the first transmission member 41 also makes rotary action while lifting, and the elastic buffer components 46 can also facilitate shock absorption when the annular drill bit 51 screws in, so as to improve the service life of the annular drill bit 51. Specifically, the elastic buffer components 46 include a telescopic rod and a buffer spring sleeved outside the telescopic rod.

[0050] Of course, the first transmission member 41 is provided with a limiting structure for preventing it from rotating with the transmission seat 47, which can include a limiting rod 43 arranged on the first transmission member 41, the limiting rod 43 being slidably connected with the rack 1, so that the first transmission member 41 can be limited by the limiting rod 43 to avoid rotating with the transmission seat 47, and also can be guided for lifting by the limiting rod 43.

[0051] Please refer to Figures 1-5As shown, in the embodiments of the present application, the stabilizing assembly 5 can further comprise a support member 54 in the form of a ring structure, which is movably arranged on the rack 1 and located outside the ring-shaped drill bit 51, and the support member 54 comprises a support portion for pressing against the ground, and when the ring-shaped drill bit 51 is in the stable state of being rotated into the ground, the support portion of the support member 54 is pressed against the ground.

[0052] The support member 54 is arranged outside the ring-shaped drill bit 51 for supporting on the ground to further improve the stability, and can also protect the ring-shaped drill bit 51 from being contacted by animals or humans, thereby improving the safety of drilling. The support portion of the support member 54 is used for pressing against the ground, and the side cross section of the support member 54 and the main body forms an L shape, and the whole also forms an inverted T shape, which can better support. The support member 54 is movably arranged on the rack 1 and can be driven downward to press against the ground when the ring-shaped drill bit 51 is rotated, thereby realizing the linkage transmission of the support member 54 and the ring-shaped drill bit 51, and avoiding the need to configure a driving mechanism.

[0053] Further, the support member 54 is arranged on the rack 1 by a return spring 56 to be elastically movable in the longitudinal direction, and the top of the support member 54 is provided with a ring-shaped rail 55, and the ring-shaped drill bit 51 is provided with a sliding fitting portion extending therefrom to cooperate with the ring-shaped rail 44, so as to drive the support member 54 to press against the ground in the rotating direction during the rotation of the ring-shaped drill bit 51.

[0054] The support member 54 can be switched between the initial position and the pressing position by the return spring 56, and when the support member 54 is not pressed by the ring-shaped drill bit 51, it is in the initial position of being stored in the rack 1 by the support of the return spring 56, and when it is pressed against the ground by the ring-shaped drill bit 51, it is in the pressing position, and at this time the return spring 56 is in a compressed state, and because the ring-shaped drill bit 51 has a large friction force with the rock and soil, the friction force can overcome the elastic force of the return spring 56 to stably support, and the return spring 56 can elastically reset the support member 54 and play a certain elastic supporting role in this process. By arranging the ring-shaped rail 44 on the support member 54, the ring-shaped rail 44 can cooperate with the sliding fitting portion arranged on the ring-shaped drill bit 51, thereby avoiding the influence of the support member 54 which cannot rotate on the rotation of the ring-shaped drill bit 51.

[0055] Preferably, in combination with Figure 3 and Figure 6As shown, the sliding fit part includes a convex ring 52 connected to the outer wall of the top end of the annular drill bit 51 and a fit part provided on the convex ring 52, which is a ball 53 protruding from the surface of the convex ring 52 or a roller rotating on the surface of the convex ring 52. Both of the above fit structures can realize sliding fit.

[0056] In a preferred embodiment of the engagement structure 6, the engagement structure 6 includes Figure 1 and Figures 3-5 As shown, the engagement structure 6 includes a sliding tooth part one 61 provided on the inner wall of the transmission seat 47 in the circumferential direction and a sliding tooth part two 62 provided on the outer wall of the drill rod 22 in the circumferential direction. When the drill rock assembly 2 is in the working position one, the sliding tooth part one 61 and the sliding tooth part two 62 are engaged, and when the drill rock assembly 2 is switched from the working position one to the working position two, the sliding tooth part one 61 and the sliding tooth part two 62 are axially disengaged to release the transmission.

[0057] The sliding tooth part one 61 and the sliding tooth part two 62 can axially slide and engage or disengage by sliding, so that the drill rock assembly 2 can be switched between the working position one and the working position two, and then the transmission connection and disconnection with the transmission assembly 4 can be realized.

[0058] Preferably, in combination with Figure 10 As shown, the sliding tooth part one 61 and the sliding tooth part two 62 each include a plurality of sliding teeth 63 distributed in the circumferential direction, and the top end and the low end of the sliding teeth 63 are provided with a guide structure 64, so that the sliding teeth 63 of the sliding tooth part one 61 and the sliding teeth 63 of the sliding tooth part two 62 can be axially engaged through the guide structure 64. The sliding teeth 63 are similar to the teeth of a gear, which can be relatively engaged to realize the stop in the circumferential direction and play a transmission role. By providing the guide structure 64 on both ends of the sliding teeth 63 in the axial direction, the mutual engagement can be facilitated when the drill rock assembly 2 is lifted to switch the working position, so that the switching is more smooth and fast. Specifically, the guide structure 64 is a pyramid structure, which can be easily slid in or out at any angle in the circumferential direction.

[0059] In order to realize the lifting drive of the drill rock assembly 2, in combination with Figure 1 , Figure 2 and Figure 5 As shown, in an embodiment, the drive assembly one 3 includes a lifting seat 31, a screw elevator 32 and a guide rod 33. The lifting seat 31 is slidingly provided on the rack 1 through the guide rod 33, the screw elevator 32 is connected between the rack 1 and the lifting seat 31 to drive the lifting seat 31 to make lifting action along the guide rod 33, and the drill rock assembly 2 is provided on the lifting seat 31.

[0060] In this way, the lifting seat 31 can be lifted by the screw lifting machine 32, and the rock drilling assembly 2 connected thereto can be driven to drill, and the screw lifting machine 32 has the advantage of large lifting range relative to the transmission hydraulic lifting mechanism, so that the drilling device has a larger drilling depth, and the guide rod 33 is arranged to make the lifting seat 31 move more smoothly and smoothly, thereby improving the drilling accuracy.

[0061] In some embodiments, the drill bit 23 is a sampling drill bit 23 and a drilling drill bit 23. Different drill bits 23 can be replaced according to the needs or actual conditions.

[0062] In order to realize the dismounting of the drill bit 23 while avoiding the fracture at the connection with the drill rod 22, in combination with Figure 3 and Figures 7-9 As shown in Figs. 1 and 2, in the embodiment of the present application, the drill bit 23 is connected with the drill rod 22 through the connecting assembly 24; the connecting assembly 24 comprises a connecting disc one 241, a connecting disc two 242, a reinforcing disc one 243, a reinforcing disc two 244 and a fastener 247, the bottom end of the drill rod 22 is fixed with the connecting disc one 241, the drill bit 23 is fixed with the connecting disc two 242 which is butted with the connecting disc one 241, the reinforcing disc one 243 is axially overlapped on the connecting disc one 241, the reinforcing disc two 244 is axially overlapped on the connecting disc two 242, the reinforcing disc one 243 and the reinforcing disc two 244 are both provided with a plurality of limiting teeth 245 distributed in the circumferential direction, the limiting teeth 245 of the reinforcing disc one 243 and the limiting teeth 245 of the reinforcing disc two 244 are axially engaged, and the fastener 247 is fixedly connected with the connecting disc one 241, the connecting disc two 242, the reinforcing disc one 243 and the reinforcing disc two 244 in the direction parallel to the axial direction.

[0063] The reinforcing disc one 243 and the reinforcing disc two 244 can be engaged with each other through the limiting teeth 245, and form a structure which is stopped in the circumferential direction. Since the reinforcing disc one 243 and the reinforcing disc two 244 are connected with the connecting disc one 241 and the connecting disc two 242 through the fastener 247, the torsional force borne by the connecting disc one 241 and the connecting disc two 242 can be shared, thereby reducing the risk of fracture of the fastener 247 and the connecting disc, and improving the structural stability of the connection.

[0064] Further, a plurality of reinforcing blocks one 249 are arranged in the circumferential direction between the drill rod 22 and the connecting disc one 241, a plurality of limiting openings one 248 through which the reinforcing blocks one 249 pass are arranged in the axial direction of the reinforcing disc one 243, a plurality of reinforcing blocks two 2410 are arranged in the circumferential direction between the drill bit 23 and the connecting disc two 242, and a plurality of limiting openings two 2411 through which the reinforcing blocks two 2410 pass are arranged in the axial direction of the reinforcing disc two 244.

[0065] In this way, the reinforcing block one 249 can reinforce the connection strength between the drill rod 22 and the connecting disc one 241, and the reinforcing block two 2410 can reinforce the connection strength between the drill bit 23 and the connecting disc two 242, and by arranging the limiting opening one 248 and the limiting opening two 2411 on the reinforcing disc one 243 and the reinforcing disc two 244 respectively, the limiting opening and the reinforcing block form a stop cooperation relationship or a limiting cooperation relationship in the circumferential direction, so that the reinforcing disc one 243 and the reinforcing disc two 244 can rely on the bodies of the drill rod 22 and the drill bit 23 for force transmission and support when being fastened and supported by the fastener 247, and can form a whole, thereby greatly improving the stability and reliability between the drill bit 23 and the drill rod 22, and facilitating disassembly and assembly, being more convenient and practical.

[0066] In the specific implementation process, the rack 1 is also provided with electrical components such as a controller, and a decorative panel and a box door 11 can be arranged outside the rack 1, the box door 11 can facilitate maintenance and repair of the internal mechanism, and one side of the rack 1 can be arranged as an open arrangement or a transparent arrangement to facilitate observation of the running condition of the internal mechanism. In addition, the length of the drill bit 23 can be set according to the depth of the drilling hole, and the height of the rack 1 can be set according to the length of the drill bit 23, and the specific configuration can be based on the situation or demand.

[0067] The working principle of the tunnel construction rock drilling equipment according to the embodiment of the present application is as follows:

[0068] Firstly, the equipment is moved to a fixed position where drilling is required, and each mechanism is controlled to reset to an initial position, at the initial position, the transmission seat 47 is engaged with the drill rod 22 through the engagement structure 6, then the driving assembly two 21 drives the drill rod 22 to rotate, so that the annular drill bit 51 drills into the rock soil to stabilize, and the supporting member 54 is pressed against the ground, at this time, the stable operation of the equipment is completed; the driving assembly one 3 drives the rock drilling assembly 2 to switch to the working position two which is disconnected with the transmission seat 47, then continues to drive downward to drill, and waits for the drilling to be completed.

[0069] After the rock drilling is completed, the driving assembly two 21 drives the drill rod 22 to rotate reversely, and the driving assembly one 3 drives the rock drilling assembly 2 to move upward, at this time, the supporting member 54 resets and is stored in the inside of the rack 1 under the action of the annular drill bit 51; when the rock drilling assembly 2 moves to the initial position of the working position two, the rotation is stopped, the driving assembly one 3 drives the rock drilling assembly 2 to switch to the working position one, the annular drill bit 51 is rotated out of the rock soil to reset through the transmission of the transmission assembly 4, and finally the whole rock drilling process is completed.

[0070] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A rock drilling rig for tunnel construction, characterized in that The rock drilling machine comprises a rack and a rock drilling assembly, a driving assembly I, a transmission assembly and a stabilizing assembly arranged on the rack, the rock drilling assembly comprises a drill rod, a drill bit and a driving assembly II, the driving assembly II connects the drill bit with the drill rod to drive the drill bit to rotate, the driving assembly I drives the rock drilling assembly to move and switch between at least a working position I and a working position II, when the rock drilling assembly is at the working position I, the drill rod is in transmission connection with the transmission assembly through the engagement structure to drive the transmission assembly, when the rock drilling assembly is at the working position II, the rock drilling assembly is disconnected from the transmission assembly to drill along the drilling direction through the driving assembly II. The transmission assembly comprises a transmission seat, a transmission member I and a transmission member II, the transmission seat is in the form of an annular structure and is arranged outside the drill rod in a rotating manner, the transmission seat can be in transmission connection with the drill rod through the engagement structure, the transmission seat is provided with a transmission part I and a transmission part II in the axial direction, the transmission member I is in the form of an annular structure and is threadedly fitted outside the transmission part I to move up and down in the axial direction, the transmission member II is in the form of an annular structure and is fitted outside the transmission part II, the transmission member II is in sliding fit with the transmission part II in the axial direction and is locked in the circumferential direction, the transmission member I is in rotational connection with the transmission member II to drive the transmission member II to move up and down when the transmission member I moves up and down. The stabilizing assembly comprises an annular drill cutter, the annular drill cutter is connected to the transmission member II in the axial direction and can be limited in the radial direction after being rotated into the rock soil to avoid deviation in each direction perpendicular to the drilling axial direction, so that the drill bit can be stably centered during drilling.

2. A rock drilling rig for tunnel construction as claimed in claim 1, characterized in that The outer circumferential surface of the annular drill cutter is provided with a spiral.

3. A rock drilling rig for tunnel construction according to claim 1, characterized in that The transmission member II is provided with an annular slide rail in the circumferential direction, the annular slide rail is in sliding fit with an annular slide seat, the annular slide seat is provided with a plurality of elastic buffer components in the circumferential direction, and the annular slide seat is connected to the transmission member I through the elastic buffer components.

4. A rock drilling rig for tunnel construction as claimed in claim 1, characterized in that The stabilizing assembly further comprises a support member in the form of an annular structure, the support member is movably arranged on the rack and located outside the annular drill cutter, the support member comprises a support part for pressing against the ground, and when the annular drill cutter is in a stable state of being rotated into the ground, the support part of the support part is pressed against the ground.

5. A rock drilling rig for tunnel construction according to claim 4, characterized in that The support member is arranged on the rack by a return spring to elastically move in the longitudinal direction, the top of the support member is provided with an annular track, and the annular drill cutter is provided with a sliding fit part extending therefrom to cooperate with the annular slide rail, so as to drive the support member to press against the ground in the rotating direction during the rotation of the annular drill cutter.

6. A rock drilling rig for tunnel construction according to claim 1, characterized in that The engagement structure comprises a sliding tooth part I arranged on the inner wall of the transmission seat in the circumferential direction and a sliding tooth part II arranged on the outer wall of the drill rod in the circumferential direction, the sliding tooth part I is engaged with the sliding tooth part II when the rock drilling assembly is at the working position I, and the sliding tooth part I is disengaged from the sliding tooth part II in the axial direction to disconnect the transmission when the rock drilling assembly is switched from the working position I to the working position II.

7. A tunneling rock drilling rig as claimed in claim 6, characterized in that The sliding tooth part one and the sliding tooth part two each include a plurality of sliding teeth distributed at intervals in the circumferential direction, and the top end and the low end of the sliding teeth are each provided with a guide structure, so that the sliding teeth of the sliding tooth part one and the sliding teeth of the sliding tooth part two can engage in the axial direction through the guide structure.

8. A rock drilling rig for tunnel construction according to claim 1, characterized in that The driving assembly one includes a lifting seat, a screw lifter and a guide rod, the lifting seat is slidably arranged on the rack through the guide rod, the screw lifter is connected between the rack and the lifting seat to drive the lifting seat to make lifting action along the guide rod, and the rock drilling assembly is arranged on the lifting seat.

9. A rock drilling rig for tunnel construction according to claim 1, characterized in that The drill bit is a sampling drill bit and a drilling drill bit, and the drill bit is connected with the drill rod through the connecting assembly. The connecting assembly includes a connecting disc one, a connecting disc two, a reinforcing disc one, a reinforcing disc two and a fastener, the bottom end of the drill rod is fixed with the connecting disc one, the connecting disc two which is in butt joint with the connecting disc one is fixed on the drill bit, the reinforcing disc one is axially overlapped on the connecting disc one, the reinforcing disc two is axially overlapped and arranged on the connecting disc two, the reinforcing disc one and the reinforcing disc two are each provided with a plurality of limiting teeth distributed in the circumferential direction, the limiting teeth of the reinforcing disc one and the limiting teeth of the reinforcing disc two engage in the axial direction, and the fastener fixes the connecting disc one, the connecting disc two, the reinforcing disc one and the reinforcing disc two in series along the direction parallel to the axial direction.

10. A tunneling rock drilling rig as claimed in claim 9, characterized in that A plurality of reinforcing blocks one are arranged between the drill rod and the connecting disc one in the circumferential direction, the reinforcing disc one is axially provided with a plurality of limiting openings one through which the reinforcing blocks one pass, a plurality of reinforcing blocks two are arranged between the drill bit and the connecting disc two in the circumferential direction, and the reinforcing disc two is axially provided with a plurality of limiting openings two through which the reinforcing blocks two pass.

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