A drilling device for tunnel construction

Abstract

This invention belongs to the field of tunnel engineering technology, specifically relating to a drilling device for tunnel construction. It includes a drill rod and a drive unit and feed unit connected to the drill rod. The drill rod is also equipped with a dust and slag removal unit, which includes a baffle, a sleeve, a transmission structure, and a material-feeding plate. The baffle is a hemispherical groove structure with a discharge port on its side wall. The sleeve's axis coincides with that of the baffle, with one end inserted into the bottom wall of the baffle and the two rotatably connected. The drill rod is inserted through the sleeve. The transmission structure is located between the inner wall of the sleeve and the side wall of the drill rod, and the transmission component drives the sleeve to rotate during the feed process. The material-feeding plate is fixed to the sleeve and rotates within the baffle under the drive of the sleeve. This device can collect and continuously discharge dust and slag generated during drilling, effectively preventing dust and slag accumulation and improving the protection performance of the drill rod.

Description

TECHNICAL FIELD

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

[0002] The most important function of a tunnel is to serve as a traffic passageway, including highway tunnels, railway tunnels, underwater tunnels, subways, and pedestrian tunnels. They can provide a convenient transportation path, enabling vehicles, trains, or pedestrians to safely and quickly pass through natural obstacles such as mountains, rivers, lakes, and oceans. During tunnel construction, in order to facilitate the installation of various fixed structures such as cable supports, pipe supports, lighting equipment, etc., holes are often drilled on the top and side walls of the tunnel. These hole positions can ensure that various facilities are securely attached to the tunnel wall, improving the safety and stability of the internal facilities of the tunnel. At the same time, for tunnels that have already been built, drilling holes in the side walls can be used for grouting reinforcement, drainage, and other repair work, thereby extending the service life of the tunnel and ensuring the safety of drivers and pedestrians.

[0003] The device currently applied in tunnel sidewall drilling avoids the harm of dust and debris generated during drilling to construction personnel by setting corresponding collection and dust removal structures at the drill bit position to block the spread of dust and debris, effectively reducing the harm of dust and debris to construction personnel. However, these collection and dust removal structures are surrounded on the side of the drill rod, and the collected dust and debris are difficult to discharge in time and accumulate in the collection and dust removal structure. Especially in deep drilling or large-diameter drilling operations, the accumulation of debris and dust increases the load burden of the drill rod, and the contact area between the accumulated debris and dust and the drill rod increases, which increases the friction area with the drill rod, causing the drill rod to wear out faster, affecting the drilling accuracy of the drill rod, and affecting the normal operation of the drill rod. For example, a tunnel engineering construction drilling device is provided in Chinese Patent No. CN113175299A, which includes a rack, a sliding support and a first driving device for driving the sliding support to slide in the horizontal direction are provided on the rack, and a drill rod and a second driving device for driving the drill rod to rotate at high speed are provided on the sliding support; a support frame and an adjusting sleeve are also provided on the rack, the adjusting sleeve is fixedly connected with a telescopic sealing pipe, the telescopic sealing pipe is connected with the drill rod in rotation; and a sealing plate is further provided at the front end of the telescopic sealing pipe. During use, the position of the adjusting sleeve is controlled to make the end face of the adjusting sleeve tightly fit the punching section. Since the telescopic sealing pipe and the sealing plate cooperate to seal the working end of the entire drill rod, they can seal the dust generated during drilling and prevent it from escaping. However, dust and debris will accumulate in the telescopic sealing pipe during drilling, and some dust and debris will also accumulate in the through hole provided on the sealing plate for the entry and exit of the drill rod. As the amount of dust and debris accumulation increases, the weight of the front end of the drill rod increases, and some dust and debris adhere to the sidewall of the drill rod, which increases the friction area with the drill rod and accelerates the wear of the drill rod. If the accumulation is not handled in time, the weight of the front end of the drill rod will increase, causing a weight burden, and even affecting the normal operation of the drill rod. For example, a cylindrical structure formed by the first and second protective plates is disclosed in Chinese Patent No. CN220849604U, which wraps the drilling machine, and the first and second inner plates are slidably arranged in the first and second protective plates. The first and second inner plates are in contact with the wall of the drill hole. As the drilling machine continuously drills, the first and second inner plates press the spring inward, so that the first and second inner plates always wrap the drilling machine, preventing dust from flying. When the sliding block separates from the first and second protective plates, it is convenient to disassemble and assemble the drilling machine, and it is also convenient to clean the dust entering the interior.Compared with the above-mentioned patent CN113175299A, the device can conveniently process the collected dust and slag after the drilling is completed, but the slag and dust cannot be discharged in time during the drilling process, resulting in the accumulation of the slag and dust inside the first and second protective plates, especially when drilling the top of the tunnel, the accumulated slag and dust will directly contact the drilling machine, affecting the operation of the drilling machine and the drill rod, especially causing a great degree of wear to the drill rod, affecting its service life. SUMMARY

[0004] In order to solve the problems existing in the prior art, the purpose of the present application is to provide a drilling device for tunnel engineering construction, which can collect the dust and slag generated during the drilling of the drill rod and realize continuous discharge, effectively avoiding the accumulation of dust and slag and improving the protection performance of the drill rod.

[0005] The technical scheme of the present application is:

[0006] A drilling device for tunnel engineering construction, comprising a drill rod and a driving part and a feeding part connected with the drill rod, the driving part is used for driving the drill rod to rotate, the feeding part is used for driving the drill rod to move, and a dust removal unit is further arranged on the drill rod, the dust removal unit comprises:

[0007] A blocking cover in a hemispherical groove structure, a discharge port is formed in the side wall of the blocking cover;

[0008] A sleeve coincides with the axis of the blocking cover, one end of the sleeve is inserted into the bottom wall of the blocking cover and they are rotationally connected, and the drill rod is inserted into the sleeve;

[0009] A transmission structure is arranged between the inner wall of the sleeve and the side wall of the drill rod, the transmission assembly is used to drive the sleeve to rotate during the feeding of the drill rod;

[0010] A raking plate is fixedly connected with the sleeve, the raking plate is used to rotate in the blocking cover under the driving of the sleeve, so as to continuously discharge the dust and slag collected in the blocking cover from the discharge port.

[0011] Preferably, the transmission structure comprises:

[0012] A guide chute is formed in the inner wall of the sleeve, and the guide chute is formed along the axial direction of the sleeve;

[0013] A transmission block is fixedly connected with one end of the drill rod and the other end is inserted into the guide chute, and the transmission block slides in the guide chute.

[0014] Preferably, a boss is arranged in the barrier cover, the boss is sleeved on the sleeve, the boss is a circular arc surface facing the opening side of the barrier cover, the side of the boss away from the circular arc surface is fixedly connected with the side wall of the barrier cover, and the side close to the boss of the material pushing plate is attached to the circular arc surface of the boss.

[0015] Preferably, the opening edge of the barrier cover is sleeved with an annular sealing sleeve, a plurality of elastic components are uniformly arranged between the outer side wall of the annular sealing sleeve and the outer side wall of the barrier cover, and the elastic components are used for enhancing the close effect of the sealing sleeve and the tunnel side wall.

[0016] Preferably, the elastic component comprises:

[0017] A first connecting plate is fixedly connected with the side wall of the sealing sleeve, and a through hole is formed in the first connecting plate;

[0018] A second connecting plate is fixedly connected with the side wall of the barrier cover, and the first connecting plate and the second connecting plate are oppositely arranged;

[0019] A guide column is fixedly connected with one end of the second connecting plate, and the other end of the guide column passes through the through hole in the first connecting plate;

[0020] A spring is sleeved on the guide column, and the spring is located between the first connecting plate and the second connecting plate and is fixedly connected with the first connecting plate and the second connecting plate respectively.

[0021] Preferably, an annular flow guide seat is fixedly connected with the side wall on the inner side of the barrier cover, the flow guide seat is arranged in an inclined manner facing the side wall of the drill rod, the lower end of the inclined direction is away from the drill rod, and the upper end of the inclined direction is close to the drill rod and flush with the upper side wall of the sealing sleeve.

[0022] Preferably, a soft pad with high resilience is fixedly connected with the sealing cover, and the soft pad surrounds the edge of the opening of the barrier cover.

[0023] Preferably, the lower end of the discharge port is connected with the boss, and the upper end of the discharge port is connected with the flow guide seat.

[0024] Preferably, the upper end of the sleeve is flush with the opening of the barrier cover.

[0025] Preferably, the end of the material pushing plate away from the boss is flush with the opening of the barrier cover, and the side of the material pushing plate away from the sleeve is attached to the inner wall of the barrier cover.

[0026] Compared with the prior art, the drilling equipment for tunnel engineering construction has the following beneficial effects:

[0027] The device is used for adjusting the drilling direction of the drill rod, moving the blocking cover, abutting the opening of the blocking cover on the circumferential side of the required drilling position, completely blocking and sealing the drilling position, then starting the driving part and the feeding part, rotating and feeding the drill rod by the combined action of the driving part and the feeding part to realize drilling, and under the action of the blocking cover, the dust and slag generated in the drilling process are completely blocked and collected in the blocking cover, at the same time, the rotation of the drill rod drives the sleeve to rotate through the cooperation of the transmission structure, and then the sleeve drives the raking plate to rotate, and the dust and slag generated in the drilling process of the drill rod are continuously pushed to the discharge port of the blocking cover through the rotation of the raking plate in the blocking cover, the slag and dust in the blocking cover are continuously removed, thereby effectively avoiding the accumulation of slag and dust in the blocking cover, avoiding the damage of the accumulated slag and dust to the drill rod, effectively improving the protection performance of the drill rod, and prolonging the service life of the drill rod. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a top view of the overall structure in the embodiment of the application;

[0029] Figure 2 It is a perspective view of the overall structure from the first perspective in the embodiment of the application;

[0030] Figure 3 It is a longitudinal section view of A-A in the embodiment of the application; Figure 1

[0031] Figure 4 It is a perspective view of the overall structure from the second perspective in the embodiment of the application;

[0032] Figure 5 It is a perspective view of the overall structure from the third perspective in the embodiment of the application;

[0033] Figure 6 It is an enlarged structure schematic view of B in the embodiment of the application; Figure 5

[0034] Figure 7 It is a structure schematic view of the flow guide seat in the embodiment of the application.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1, drill rod; 2, blocking cover; 3, discharge port; 4, sleeve; 5, transmission structure; 51, guide chute; 52, transmission block; 6, raking plate; 7, boss; 8, annular sealing sleeve; 9, elastic assembly; 91, first connecting plate; 92, second connecting plate; 93, guide column; 94, spring; 10, flow guide seat; 11, soft pad; 12, driving part; 13, feeding part; 131, moving plate; 132, second motor; 133, stud. DETAILED DESCRIPTION ​​

[0037] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0038] Based on the examples in the present application, all other examples obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0039] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0040] Referring to Figures 1 to 7 As shown, in order to collect the dust and debris generated during the drilling of the drill rod 1 and continuously discharge them to avoid accumulation of dust and debris and improve the protection performance of the drill rod 1. The present embodiment provides a drilling equipment for tunnel engineering construction, which comprises a rack, a drill rod 1, and a driving part 12 and a feeding part 13 connected with the drill rod 1. The driving part 12 is used to drive the drill rod 1 to rotate, and the feeding part 13 is used to drive the drill rod 1 to move. The drill rod 1 is further provided with a dustproof and slag removal unit.

[0041] The dustproof and slag removal unit comprises a protective cover 2, a sleeve 4, a transmission structure 5 and a raking plate 6. The protective cover 2 is a semispherical groove structure, and the protective cover 2 is fixed with the rack. An outlet 3 is formed in the side wall of the protective cover 2. The sleeve 4 coincides with the axis of the protective cover 2. One end of the sleeve 4 is inserted into the bottom wall of the protective cover 2 and they are rotatably connected. The drill rod 1 penetrates and is inserted into the sleeve 4. The transmission structure 5 is arranged between the inner wall of the sleeve 4 and the side wall of the drill rod 1. The transmission assembly is used to drive the sleeve 4 to rotate in the process of feeding of the drill rod 1. The raking plate 6 is fixedly connected with the sleeve 4. The raking plate 6 is used to rotate in the protective cover 2 under the driving of the sleeve 4, so as to continuously discharge the dust and debris collected in the protective cover 2 from the outlet 3.

[0042] Among them, referring to Figure 4 and Figure 5The driving part 12 includes a first motor, the output shaft of which is detachably connected with the drill rod 1 through a shaft coupling. The feeding part 13 includes a moving plate 131, a second motor 132, a stud 133 and a bearing, the moving plate 131 is slidably connected with a sliding groove matched therewith on the frame, the first motor is fixed on the moving plate 131, and the moving direction of the moving plate 131 is parallel to the axis of the drill rod 1, one end of the stud 133 is rotatably connected with the guard cover 2 through the bearing, the other end is connected with the output shaft of the second motor 132 through a shaft coupling, and the second motor 132 is fixed on the frame. The device further includes a moving base, a lifting mechanism, a steering mechanism and a slag storage tank (not shown in the figure). The lifting mechanism is installed on the moving base, the steering mechanism is installed on the moving end of the lifting base, and then the frame as a whole is fixed on the rotating end of the steering mechanism. The slag storage tank is communicated with the discharge port 3 on the guard cover 2 through a transmission pipeline, so that the device as a whole can be conveniently moved to the position where drilling is required by using the moving base during the drilling process, the drilling height of the drill rod 1 can be adjusted by using the lifting mechanism, the drilling angle of the drill rod 1 can be adjusted by using the steering mechanism, and the broken slag and dust discharged from the discharge port 3 can be collected in the slag storage tank for convenient disposal. Preferably, the drill rod 1 used in the device is mainly a threaded drill, and through the threaded structure of the threaded drill, the broken slag can be fully guided into the guard cover 2 through the thread on the drill rod 1 regardless of the change of the drilling angle of the drill rod 1 during the drilling process, so that the material pushing plate 6 can fully push the broken slag out of the discharge port 3.

[0043] Referring to Figures 1 to 5 As shown, specifically, during use of the device, the drilling direction of the drill rod 1 is adjusted, the guard cover 2 is moved, the opening of the guard cover 2 is completely abutted on the circumferential side of the position where drilling is required, the drilling position is completely blocked and sealed, then the driving part 12 and the feeding part 13 are started, the drill rod 1 is rotated and fed to realize drilling by the combined action of the driving part 12 and the feeding part 13, and under the action of the guard cover 2, the dust and broken slag generated during the drilling process are all blocked and collected inside the guard cover 2. At the same time, the rotation of the drill rod 1 drives the sleeve 4 to rotate through the cooperation of the transmission structure 5, and then the sleeve 4 drives the material pushing plate 6 to rotate, the dust and broken slag generated during the drilling of the drill rod 1 are continuously pushed to the discharge port 3 of the guard cover 2 by the rotation of the material pushing plate 6 in the guard cover 2, the broken slag and dust in the guard cover 2 are continuously removed, so that the accumulation of the broken slag and dust in the guard cover 2 can be effectively avoided, that is, the accumulation of the broken slag and dust around the drill rod 1 is avoided, which avoids the wear and damage of the drill rod 1 caused by the accumulation of the broken slag and dust, effectively improves the protection performance of the drill rod 1, and prolongs the service life of the drill rod 1.

[0044] Referring to Figure 3As shown, further, in order to ensure that the drill pipe 1 in the process of moving feed can keep the continuous rotation of the paddle plate 6, the realization of the effective discharge of the slag and dust in the anti-blocking cover 2, avoid accumulation caused by wear and damage to the drill pipe 1. The transmission structure 5 of the device includes the guide sliding groove 51 which is axially along the sleeve 4 and is opened on the inner wall of the sleeve 4, and the transmission block 52 which slides in the guide sliding groove 51, and the transmission block 52 extends out of one end of the guide sliding groove 51 and is fixed with the side wall of the drill pipe 1, preferably the transmission block 52 is fixed on the side of the drill pipe 1 close to the driving part 12, at the same time in order to ensure the stability of the drill pipe 1 and the sleeve 4 cooperation, the guide sliding groove 51 and the transmission block 52 are provided with at least two groups according to the actual application. Thus in use, the feeding part 13 by pushing the drill pipe 1 along the axial direction of the feed movement at the same time, always keep the transmission block 52 in the guide sliding groove 51 on the inner wall of the sleeve 4 movement, and by the rotation of the drill pipe 1 in the transmission block 52 and the guide sliding groove 51 cooperation, so that the sleeve 4 can in the process of moving feed of the drill pipe 1 continuously with the rotation of the drill pipe 1 rotation, in turn realize the continuous rotation of the paddle plate 6, can continuously clean the slag and dust collected in the anti-blocking cover 2 in the process of drilling of the drill pipe 1. And the transmission structure 5 which is combined by the guide sliding groove 51 and the transmission block 52, can effectively use the power of the drill pipe 1, save resources, simple structure.

[0045] Referring to Figure 2 and Figure 3 As shown, further, in order to ensure that the drill pipe 1 in the process of moving feed can keep the continuous rotation of the paddle plate 6, the realization of the effective discharge of the slag and dust in the anti-blocking cover 2, avoid accumulation caused by wear and damage to the drill pipe 1. In the anti-blocking cover 2 is also provided with the boss 7, the boss 7 is sleeved on the sleeve 4, the side of the boss 7 facing the opening of the anti-blocking cover 2 is arc surface, the side of the boss 7 away from the arc surface is fixedly connected with the side wall of the anti-blocking cover 2, the side of the paddle plate 6 close to the boss 7 is fitted with the arc surface of the boss 7. In use, first of all, the arrangement of the boss 7 can seal the gap between the sleeve 4 and the anti-blocking cover 2, avoid dust and slag into the gap to cause the rotation of the sleeve 4, and then the arc surface of the boss 7 facing the opening of the anti-blocking cover 2 can effectively guide the collected slag and dust away from the drill pipe 1, facilitate the paddle plate 6 to push out the slag and dust from the discharge port 3.

[0046] Referring to Figures 3 to 6 As shown, further, in order to ensure that the drill pipe 1 in the process of moving feed can keep the continuous rotation of the paddle plate 6, the realization of the effective discharge of the slag and dust in the anti-blocking cover 2, avoid accumulation caused by wear and damage to the drill pipe 1. The opening edge of the anti-blocking cover 2 is sleeved with the annular sealing sleeve 8, and a plurality of elastic components 9 are uniformly distributed between the outer side wall of the annular sealing sleeve 8 and the outer side wall of the anti-blocking cover 2, and the elastic components 9 are used to enhance the close effect of the sealing sleeve and the tunnel side wall. Referring to Figure 6As shown, preferably, the elastic assembly 9 comprises a first connecting plate 91, a second connecting plate 92, a guide column 93 and a spring 94. The first connecting plate 91 is fixed to the side wall of the sealing sleeve, and a through hole is formed in the first connecting plate 91; the second connecting plate 92 is fixed to the side wall of the protection cover 2, and the first connecting plate 91 and the second connecting plate 92 are oppositely arranged; one end of the guide column 93 is fixed to the second connecting plate 92, and the other end of the guide column 93 passes through the through hole of the first connecting plate 91; the spring 94 is sleeved on the guide column 93, and the spring 94 is located between the first connecting plate 91 and the second connecting plate 92 and is fixed to the first connecting plate 91 and the second connecting plate 92, respectively. In use, the opening end of the protection cover 2 is abutted on the side wall of the tunnel through the sealing sleeve by moving adjustment, but the device will produce mechanical vibration during the drilling process of the drill rod 1. At this time, the cooperation of the sealing sleeve and the elastic assembly 9 not only changes the rigid contact between the protection cover 2 and the side wall of the tunnel, which causes damage to the protection cover 2 during the vibration process, but also makes the sealing sleeve always maintain the basic effect of the tunnel side wall during the mechanical vibration process when the protection cover 2 and the tunnel side wall have a gap. Thus, the gap that may be generated can be effectively compensated for, the dust and debris can be effectively blocked in the protection cover 2, and the device can be effectively protected from damage caused by the dust and debris drifting into the drill rod 1, the driving part 12, the feeding part 13 and other connection and disconnection structures, and the dust and debris drifting into the device can also avoid causing physical harm to the construction personnel.

[0047] Referring to Figure 3 and Figure 7 As shown, further, in order to avoid the accumulation of debris and dust causing wear and damage to the drill rod 1 and improve the protection performance of the drill rod 1, the side wall inside the sealing sleeve in the protection cover 2 is further fixed with an annular flow guide seat 10. The side wall of the flow guide seat 10 facing the drill rod 1 is inclined, and the lower end of the inclined direction is away from the drill rod 1, and the upper end of the inclined direction is close to the drill rod 1 and flush with the upper side wall of the sealing sleeve. In use, the guide of the inclined surface of the flow guide seat 10 can always guide the debris and dust falling on the edge of the protection cover 2 to the inside of the protection cover 2. Especially when the drill rod 1 drills the tunnel side wall in a horizontal or small angle direction, the debris generated at this time is basically on the lower side of the drill rod 1. If the flow guide seat 10 is not provided, part of the debris may be left on the edge of the protection cover 2 and cannot be cleaned by the material shifting plate 6. However, the flow guide seat 10 can effectively guide this part of the debris to the position where the material shifting plate 6 is convenient to carry, so that the debris can be effectively cleaned out of the discharge port 3, and the accumulation of debris can be avoided.

[0048] Referring to Figures 2 to 5As shown, further, in order to ensure that the drill pipe 1 in the movement of the feed can keep the continuous rotation of the paddle 6, the realization of the debris and dust in the shield 2 effective discharge, avoid accumulation caused by the wear and tear of the drill pipe 1. The sealing cover is also fixed with high resilience of the soft pad 11, soft pad 11 around the edge of the opening of the shield 2. The preferred soft pad 11 can be used in high elasticity of sponge material, the use of high elasticity of the soft pad 11 can make the shield 2 tunnel different inclination position construction, ensure that the shield 2 opening and tunnel wall fully contact sealing, so that the debris and dust can be thoroughly cleaned, while having good dustproof effect.

[0049] Referring to Figure 2 As shown, further, in order to avoid the accumulation of debris and dust caused by the wear and tear of the drill pipe 1, improve the protection performance of the drill pipe 1. The lower end of the discharge port 3 and the boss 7, the upper end of the flow guide seat 10. From the use, can make full use of the rotation of the paddle 6 to push the debris and dust out of the discharge port 3, avoid the accumulation of debris and dust.

[0050] Referring to Figure 3 As shown, further, in order to improve the protection performance of the drill pipe 1. The upper end of the sleeve 4 and the opening of the shield 2 are flush. At the same time, the end of the paddle 6 away from the boss 7 is flush with the opening of the shield 2, and the side of the paddle 6 away from the sleeve 4 is attached to the inner wall of the shield 2. Thus, in use, the sleeve 4 can achieve good sealing protection for the entire rotation and movement of the drill pipe 1, effectively blocking the drill pipe 1 and the debris and dust in the shield 2, while the design of the paddle 6 can fully discharge the collected debris and dust from the discharge port 3 in rotation, better use effect, better protection performance of the drill pipe 1.

[0051] The working principle of the device is:

[0052] When drilling, the mobile base is used to move the device as a whole to the desired drilling position, the lifting mechanism is used to adjust the drilling height of the drill rod 1, the steering mechanism is used to adjust the drilling angle of the drill rod 1, after adjusting the drilling direction of the drill rod 1, the position of the device is adjusted to move the protective cover 2, so that the opening of the protective cover 2 is completely abutted on the side of the desired drilling position, the drilling position is completely blocked and sealed, then the driving part 12 and the feeding part 13 are started, the drill rod 1 is rotated and fed by the combined action of the driving part 12 and the feeding part 13 to realize drilling, and under the action of the protective cover 2, the dust and debris generated during drilling are completely blocked and collected inside the protective cover 2, at the same time, the rotation of the drill rod 1 drives the sleeve 4 to rotate through the cooperation of the transmission structure 5, and then the sleeve 4 drives the raking plate 6 to rotate, and the dust and debris generated during the drilling of the drill rod 1 are continuously pushed to the discharge port 3 of the protective cover 2 through the rotation of the raking plate 6 in the protective cover 2, the debris and dust in the protective cover 2 are continuously removed, the storage tank is used to collect the debris and dust discharged from the discharge port 3. Thus, the accumulation of debris and dust in the protective cover 2 can be effectively avoided, that is, the accumulation of debris and dust around the drill rod 1 is avoided, which avoids the wear and damage of the drill rod 1 caused by the accumulation of debris and dust around the drill rod 1, and effectively improves the protection performance of the drill rod 1.

[0053] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A drilling apparatus for tunnel engineering construction, comprising a drill rod (1) and a driving portion (12) and a feeding portion (13) connected with the drill rod (1), the driving portion (12) being used for driving the drill rod (1) to rotate, and the feeding portion (13) being used for driving the drill rod (1) to move, characterized in that, The drill rod (1) is further provided with a dustproof and slag removing unit, the dustproof and slag removing unit comprises: A guard cover (2) is a semispherical groove structure, a discharge port (3) is arranged on the sidewall of the guard cover (2); A sleeve (4) coincides with the axis of the guard cover (2), one end of the sleeve (4) is inserted into the bottom wall of the guard cover (2) and the sleeve (4) is rotationally connected with the bottom wall, the drill rod (1) penetrates through the sleeve (4); A transmission structure (5) is arranged between the inner wall of the sleeve (4) and the sidewall of the drill rod (1), the transmission structure (5) is used for driving the sleeve (4) to rotate in the process of feeding the drill rod (1); A raking plate (6) is fixedly connected with the sleeve (4), the raking plate (6) is used for rotating in the guard cover (2) under the driving of the sleeve (4), so that the dust and slag collected in the guard cover (2) are continuously discharged from the discharge port (3); The guard cover (2) is further provided with a boss (7), the boss (7) is sleeved on the sleeve (4), the side of the boss (7) facing the opening of the guard cover (2) is a circular arc surface, the side of the boss (7) away from the circular arc surface is fixedly connected with the sidewall of the guard cover (2), and the side of the raking plate (6) close to the boss (7) is attached to the circular arc surface of the boss (7); The opening edge of the guard cover (2) is sleeved with an annular sealing sleeve (8), a plurality of elastic components (9) are uniformly arranged between the outer sidewall of the annular sealing sleeve (8) and the outer sidewall of the guard cover (2), and the elastic components (9) are used for enhancing the close contact effect between the sealing sleeve and the sidewall of the tunnel; The elastic component (9) comprises: a first connecting plate (91) fixedly connected with the sidewall of the sealing sleeve, a through hole is arranged in the first connecting plate (91); a second connecting plate (92) fixedly connected with the sidewall of the guard cover (2), and the first connecting plate (91) and the second connecting plate (92) are oppositely arranged; a guide column (93) fixedly connected with the second connecting plate (92) at one end and arranged through the through hole in the first connecting plate (91) at the other end; and a spring (94) sleeved on the guide column (93) and fixedly connected with the first connecting plate (91) and the second connecting plate (92).

2. The drilling apparatus according to claim 1, wherein The transmission structure (5) comprises: A guide chute (51) is arranged on the inner wall of the sleeve (4), and the guide chute (51) is arranged along the axial direction of the sleeve (4); A transmission block (52) is fixedly connected with the drill rod (1) at one end and inserted into the guide chute (51) at the other end, and the transmission block (52) slides in the guide chute (51).

3. The drilling apparatus according to claim 1, wherein The sealing sleeve is further fixedly connected with an annular flow guide seat (10) on the sidewall on the inner side of the guard cover (2), the sidewall of the flow guide seat (10) facing the drill rod (1) is arranged in an inclined manner, the lower end of the inclined direction is away from the drill rod (1), the upper end of the inclined direction is close to the drill rod (1) and flush with the upper sidewall of the sealing sleeve.

4. The drilling apparatus according to claim 1, wherein A high-resilience soft pad (11) is also fixed to the sealing cover, which surrounds the edge of the opening of the barrier cover (2).

5. The drilling apparatus according to claim 3, wherein The lower end of the discharge port (3) is connected with the boss (7), and the upper end is connected with the flow guide base (10).

6. The drilling apparatus according to claim 1, wherein The upper end of the sleeve (4) is flush with the opening of the barrier cover (2).

7. The drilling apparatus according to claim 1, wherein The end of the stirring plate (6) away from the boss (7) is flush with the opening of the barrier cover (2), and the side of the stirring plate (6) away from the sleeve (4) is attached to the inner wall of the barrier cover (2).

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