阅读说明：本技术 一种具有新型钻杆推进件的打孔设备 (Drilling equipment with novel drilling rod propelling part ) 是由 丁永剑 吴少华 万杏平 李鑫 于 2020-08-14 设计创作，主要内容包括：本发明提供了一种具有新型钻杆推进件的打孔设备,其包括:推进加持机构,推进加持机构包括外壳体、钻杆加持件、钻杆推进件及钻杆旋转件,钻杆推进件包括推进油缸、动滑轮组、定滑轮组、皮带件及导向组件,定滑轮组、推进油缸的固定端固定在外壳体上,动滑轮组与推进油缸的活动端固定,皮带件一端与长度调节部固定,另一端绕过定滑轮组,并绕在动滑轮组上,导向组件包括一对导向杆、一对滑动抵接轮,一对导向杆沿推进油缸的活动端的伸缩方向设置在滑轮架两侧,导向杆与外壳体固定,一对滑动抵接轮活动设置在动滑轮组朝向导向杆的面上,一对滑动抵接轮分别与一对导向杆滑动抵接。(The invention provides a punching device with a novel drill rod propelling piece, which comprises: the propelling and holding mechanism comprises an outer shell, a drill rod holding piece, a drill rod propelling piece and a drill rod rotating piece, wherein the drill rod propelling piece comprises a propelling oil cylinder, a movable pulley block, a fixed pulley block, a belt piece and a guide assembly, the fixed ends of the fixed pulley block and the propelling oil cylinder are fixed on the outer shell, the movable pulley block is fixed with the movable end of the propelling oil cylinder, one end of the belt piece is fixed with the length adjusting part, the other end of the belt piece bypasses the fixed pulley block, and around on the running block, the direction subassembly includes a pair of guide bar, a pair of slip butt wheel, and a pair of guide bar sets up in the pulley yoke both sides along the flexible direction of the expansion end of propulsion cylinder, and the guide bar is fixed with the shell body, and a pair of slip butt wheel activity sets up on the running block face towards the guide bar, and a pair of slip butt wheel slides the butt with a pair of guide bar respectively.)

1. A boring apparatus having a novel drill rod pusher, comprising: the propelling and holding mechanism comprises an outer shell, a drill rod feeding piece, a drill rod propelling piece and a drill rod rotating piece, wherein the drill rod feeding piece and the drill rod propelling piece are fixed on the outer shell, the drill rod rotating piece is movably arranged on the outer shell and connected with the drill rod feeding piece, the drill rod propelling piece pushes the drill rod rotating piece to slide along the outer shell, the drill rod propelling piece comprises a propelling oil cylinder, a movable pulley block, a fixed pulley block, a belt piece and a guide assembly, the fixed end of the fixed pulley block and the propelling oil cylinder are fixed on the outer shell, the movable pulley block is fixed with the movable end of the propelling oil cylinder, one end of the belt piece is fixed with the length adjusting part, the other end of the belt piece bypasses the fixed pulley block and is wound on the movable pulley block, the guide assembly comprises a pair of guide rods and a pair of sliding butting wheels, the pair of guide rods are arranged on two sides of the pulley frame along the telescopic direction of the movable end of the propulsion oil cylinder, the guide rods are fixed with the outer shell, the pair of sliding abutting wheels are movably arranged on the surface, facing the guide rods, of the movable pulley block, and the pair of sliding abutting wheels are respectively in sliding abutting connection with the pair of guide rods.

2. The boring device with a novel drill rod pusher according to claim 1, characterized in that the abutment surface of the sliding abutment wheel in contact with the guide rod is formed with a curved surface matching the outer surface of the guide rod.

3. The drilling equipment with the novel drill rod propelling part as claimed in claim 2, wherein the movable pulley block comprises a pulley frame, a first movable pulley and a second movable pulley, and the first movable pulley and the second movable pulley are rotatably arranged on the pulley frame.

4. The drilling apparatus with the novel drill rod pusher as claimed in claim 1, wherein the belt member comprises a first belt and a second belt, the first belt is fixed with the drill rod rotating member at one end, the other end passes around the first movable pulley and is fixed with the outer housing, and the first belt makes the drill rod rotating member have a tendency to move towards the drill rod clamping member; one end of the second belt is fixed with the outer shell, the other end of the second belt bypasses the second movable pulley, the fixed pulley block and the length adjusting part, and the second belt enables the drill rod rotating piece to have a trend of being far away from the drill rod clamping piece.

5. The perforating apparatus having a novel drill rod pusher as claimed in claim 4, wherein the outer edge of the outer housing protrudes outward to form a sliding track, the drill rod rotating member includes a sliding bearing plate slidably connected to the sliding track and a drilling motor fixed to the sliding bearing plate, and the length adjustment portion is fixed to the sliding bearing plate.

6. The drilling equipment with the novel drill rod propelling part as claimed in claim 5, wherein a sliding lug is arranged at the bottom of the sliding bearing plate, a sliding groove is formed in the sliding lug, and the sliding track is embedded in the sliding groove.

Technical Field

The invention relates to the technical field of drilling machines, in particular to a drilling device with a novel drill rod propelling piece.

Background

At present, in the projects of building railways, highways and the like in mountain areas, a great amount of rock-soil slopes are reinforced by adopting an anchoring technology. In a common construction mode, before an anchoring hole is drilled on a slope surface, a platform is erected by a scaffold rod, the platform is fixed with the slope surface by an anchor rod, and then a heavy drilling machine is lifted to the platform. After a hole is drilled, the drilling machine needs to be detached from the platform, then the drilling machine is moved to the next drilling position along the scaffold by manpower to be installed and fixed, and then the next hole is drilled. The existing drilling equipment generally adopts belt transmission to drive the drill rod to drill, and the situation that the drill rod swings in the advancing process is caused due to the fact that the belt is flexible and the spaciousness exists among other components.

Disclosure of Invention

The invention provides a punching device with a novel drill rod propelling piece, which aims to solve the problem that a drill rod swings in the advancing process in the prior art.

The scheme for solving the technical problems is as follows:

a boring apparatus having a novel drill rod pusher, comprising: the propelling and holding mechanism comprises an outer shell, a drill rod feeding piece, a drill rod propelling piece and a drill rod rotating piece, wherein the drill rod feeding piece and the drill rod propelling piece are fixed on the outer shell, the drill rod rotating piece is movably arranged on the outer shell and connected with the drill rod feeding piece, the drill rod propelling piece pushes the drill rod rotating piece to slide along the outer shell, the drill rod propelling piece comprises a propelling oil cylinder, a movable pulley block, a fixed pulley block, a belt piece and a guide assembly, the fixed end of the fixed pulley block and the propelling oil cylinder are fixed on the outer shell, the movable pulley block is fixed with the movable end of the propelling oil cylinder, one end of the belt piece is fixed with the length adjusting part, the other end of the belt piece bypasses the fixed pulley block and is wound on the movable pulley block, the guide assembly comprises a pair of guide rods and a pair of sliding butting wheels, the pair of guide rods are arranged on two sides of the pulley frame along the telescopic direction of the movable end of the propulsion oil cylinder, the guide rods are fixed with the outer shell, the pair of sliding abutting wheels are movably arranged on the surface, facing the guide rods, of the movable pulley block, and the pair of sliding abutting wheels are respectively in sliding abutting connection with the pair of guide rods.

The movable pulley block moves along the guide rods strictly, so that the movable pulley block is prevented from shaking in the advancing process to influence the success rate of punching.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic perspective view of a drilling apparatus;

FIG. 2 is a perspective view of another angle of the drilling apparatus;

FIG. 3 is a schematic structural view of the drill rod clamping member of FIG. 1;

FIG. 4 is a schematic structural view of the propulsion clamping mechanism of FIG. 1;

FIG. 5 is a schematic view of the pusher-gripper mechanism of FIG. 1 at another angle;

FIG. 6 is an enlarged schematic view of the length adjustment part of FIG. 4;

FIG. 7 is a schematic front view of the table of FIG. 1

FIG. 8 is a schematic view of the hinge of FIG. 1;

fig. 9 is an enlarged structural schematic diagram of the movable pulley block in fig. 4.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1 to 2, a drilling apparatus according to an embodiment of the present invention includes: the drilling machine comprises a moving mechanism 1, a power mechanism 2, a connection adjusting mechanism 3, a propulsion clamping mechanism 4 and a drill rod, wherein the power mechanism 2 and the connection adjusting mechanism 3 are arranged on the moving mechanism 1, the propulsion clamping mechanism 4 is connected with the connection adjusting mechanism 3, and the drill rod is detachably fixed on the propulsion clamping mechanism 4.

The power mechanism 2 is connected with the motion mechanism 1, the connection adjusting mechanism 3 and the propulsion clamping mechanism 4, and provides power for the motion mechanism 1, the connection adjusting mechanism 3 and the propulsion clamping mechanism 4.

The connection adjusting mechanism 3 is used for adjusting the posture of the propelling and clamping mechanism 4 relative to the drilling surface.

The pushing and clamping mechanism 4 is used for clamping the drill rod and pushing the drill rod to move relative to the drilling surface.

The moving mechanism 1 comprises a walking crawler 11 and an operation platform 12, the operation platform 12 is arranged on the walking crawler 11, the power mechanism 2 and the connection adjusting mechanism 3 are fixed on the operation platform 12, the walking crawler 11 is connected with the power mechanism 2, and the power mechanism 2 drives the walking crawler 11 to work.

As shown in fig. 1, 7 and 8, the moving mechanism 1 further includes a working platform 13, the working platform 13 includes an operating platform 131, a rotating link 132, a lifting member 133 and an operating device 134, one end of the rotating link 132 is hinged to the working platform 12, the other end of the rotating link 132 is connected to a hinge 135 formed by extending the fixed end of the lifting member 133, the operating platform 131 is fixed to the movable end of the lifting member 133, the movable end of the lifting member 133 drives the lifting member 133 to move up and down in the vertical direction, and the operating device 134 is fixed to the operating platform 131.

The hinge portion 135 includes a first U-shaped element 1351, a second U-shaped element 1352, and a pin 1353, wherein a U-shaped open end of the first U-shaped element 1351 is hinged to a U-shaped open end of the second U-shaped element 1352, the other end of the first U-shaped element 1351 is fixed to the fixed end of the lifting element 133, the other end of the second U-shaped element 1352 is fixed to the rotating link 132 away from the work platform 12, a plurality of limiting holes are formed in a side wall of the first U-shaped element 1351 and are uniformly arranged along a circumferential direction of a hinge portion of the first U-shaped element 1351 and the second U-shaped element 1352, a docking hole corresponding to the limiting hole is formed in the second U-shaped element 1352, and the pin 1353 passes through one of the limiting holes and the docking hole to relatively fix the corresponding first U-shaped element 1351 and the second U-shaped element 1352.

In this embodiment, the lifting member 133 is a lift cylinder.

When the device is used, the relative positions of the first U-shaped element 1351 and the second U-shaped element 1352 are adjusted according to requirements, the workbench 13 is located at a proper position, and the pins 1353 penetrate through one of the limiting holes and the abutting holes so that the corresponding first U-shaped element 1351 and the corresponding second U-shaped element 1352 are relatively fixed; and adjusting the length of the extending movable end of the lifting oil cylinder to enable the operating platform 131 to be located at a place suitable for an operator to operate.

As shown in fig. 1 and 2, the connection adjustment mechanism 3 includes a main connection beam 31, a pitch adjustment member 32, a lift adjustment member 33, and a rotation member 34, one end of the main connection beam 31 is hinged to the working platform 12, the other end of the main connection beam 31 is hinged to the rotation member 34, the pitch adjustment member 32 is hinged to the main connection beam 31 and the rotation member 33, the pitch adjustment member 32 drives the rotation member 34 to rotate in the plane where the main connection beam 31 is located, the lift adjustment member 33 is hinged to the main connection beam 31 and the working platform 12, the lift adjustment member 33 drives the rotation member 34 to lift in the vertical direction, the rotation member 34 is fixed to the propulsion holding mechanism 4, and the propulsion holding mechanism 4 is driven to rotate in the plane where the main connection beam 31 is located.

In this embodiment, the pitch adjusting element 32 includes a first telescopic cylinder 321, a fixed end of the first telescopic cylinder 321 is hinged to the main connecting beam 31, a movable end of the first telescopic cylinder 321 is hinged to the rotating element 34, and the movable end of the first telescopic cylinder 321 extends or contracts to drive the rotating element 34 to rotate relative to the main connecting beam 31.

The lifting adjusting part 33 comprises a second telescopic oil cylinder 331, the fixed end of the second telescopic oil cylinder 331 is hinged to the operation platform 12, the movable end of the second telescopic oil cylinder 331 is hinged to the main connecting beam 31, the movable end of the second telescopic oil cylinder 331 extends or contracts to drive the main connecting beam 31 to rotate the operation platform 12.

In this embodiment, the main coupling beam 31 is a main bearing mechanism, and the lifting adjusting member 33 is an important component for supporting the main coupling beam 31, so in order to enhance the supporting effect of the main coupling beam 311, the lifting adjusting member 33 includes 2 second telescopic cylinders 331, 2 fixed ends of the second telescopic cylinders 331 are respectively hinged to different positions of the working platform 12, 2 movable ends of the second telescopic cylinders 331 are hinged to the same position of the main coupling beam 31, and 2 second telescopic cylinders 331 and the moving mechanism 2 form a stable supporting triangle to stably support the main coupling beam 31.

For the rotating member 34, there are various embodiments, for example, the rotating member 34 includes a rotating motor, the movable end of the rotating motor is fixed to the pushing and holding mechanism 4, the fixed end of the rotating motor is hinged to the main connecting beam 31 and the pitching adjusting member 32, and the movable end of the rotating motor rotates to drive the pushing and holding mechanism 4 to rotate relative to the main connecting beam 31.

In this embodiment, the rotating member 34 includes a rotating bearing 341, a first auxiliary rotating cylinder 342, and a second auxiliary rotating cylinder 343, the rotating bearing 341 has a first portion and a second portion that are relatively rotatable, the first portion is fixed with the thrust clamping mechanism 4, and the second portion is hinged with the main connecting beam 31 and the pitch adjusting member 32; the movable end of the first auxiliary rotating oil cylinder 342 and the movable end of the second auxiliary rotating oil cylinder 343 are located at two sides of the propelling and holding mechanism 4 and hinged to the second portion, and the fixed end of the first auxiliary rotating oil cylinder 342 and the fixed end of the second auxiliary rotating oil cylinder 343 are fixed to the propelling and holding mechanism 4. When the movable end of the first auxiliary rotating cylinder 342 extends and the movable end of the second auxiliary rotating cylinder 343 contracts or when the movable end of the first auxiliary rotating cylinder 342 contracts and the movable end of the second auxiliary rotating cylinder 343 extends, the pushing and holding mechanism 4 rotates relative to the second part.

In this way, the first auxiliary rotating cylinder 342 and the second auxiliary rotating cylinder 343 provide the rotating power together, so that the rotating power output is more stable.

As shown in fig. 1, 3, 4, 5, and 6, the pushing and holding mechanism 4 includes an outer housing 41, a drill rod holding member 42, a drill rod pushing member 43, and a drill rod rotating member 44, the outer housing 41 is fixed to the rotating member 34, the drill rod holding member 42 and the drill rod pushing member 43 are fixed to the outer housing 41, the drill rod rotating member 44 is movably disposed on the outer housing 41 and connected to the drill rod pushing member 43, and the drill rod pushing member 43 pushes the drill rod rotating member 44 to slide along the outer housing 41.

The drill rod is fixed with the power output end of the drill rod rotating piece 44, the drill rod rotating piece 44 drives the drill rod to rotate, and meanwhile, the drill rod pushing piece 43 pushes the drill rod rotating piece 44 to slide along the outer shell 41, so that the drill rod is screwed in relative to a drilling surface, and drilling is achieved.

The outer edge of the outer case 41 protrudes outward to form a slide rail 411.

The drill rod holder 42 is used to secure the drill rods when splicing them together.

The drill rod clamping piece 42 comprises a clamping frame 421, a first clamping part 422 and a second clamping part 423, wherein the first clamping head 422 and the second clamping head 423 are arranged on the clamping frame 421 along the length direction of the drill rod.

The first clamping portion 422 includes a pair of first clamping heads disposed oppositely, and the two first clamping heads are disposed oppositely and located at two sides of the drill rod for clamping the drill rod.

The first clamping head comprises a first clamping block 424 and a first clamping oil cylinder 425, the movable end of the first clamping oil cylinder 425 is fixed with the first clamping block 424, the movable end of the first clamping oil cylinder 425 extends, and the first clamping blocks 424 of the two first clamping heads move relatively to each other to clamp the drill rod.

In order to enable the first clamping heads arranged oppositely to work synchronously, the first clamping portion 422 further comprises a first oil separator, the first oil separator is provided with a first inlet pipe and two first oil outlet pipes, one end of each of the two first oil outlet pipes is connected with one end of the first inlet pipe, the other end of each of the first inlet pipes is connected with the oil pump of the power mechanism 2, the other ends of the two first oil outlet pipes are respectively connected with 2 first clamping cylinders 425, and the oil pump of the power mechanism 2 injects oil into the first clamping cylinders 425 to drive the first clamping cylinders 425 to work.

The second clamping portion 423 comprises a pair of second clamping heads which are arranged oppositely, and the two first clamping heads are arranged oppositely and positioned on two sides of the drill rod and used for clamping the drill rod.

The second clamping head comprises a second clamping block 426 and a second clamping cylinder 427, the movable end of the second clamping cylinder 427 is fixed with the second clamping block 426, the movable end of the second clamping cylinder 427 extends, and the second clamping blocks 426 of the two second clamping heads move relatively to clamp the drill rod.

In order to enable the second clamping heads arranged oppositely to work synchronously, the second clamping portion 423 further comprises a second oil separator, the second oil separator is provided with a second inlet pipe and two second oil outlet pipes, one end of each of the two second oil outlet pipes is connected with one end of the second inlet pipe, the other end of each of the second inlet pipes is connected with the oil pump of the power mechanism 2, the other ends of the two second oil outlet pipes are respectively connected with 2 second clamping cylinders 427, and the oil pump of the power mechanism 2 injects oil into the second clamping cylinders 427 to drive the second clamping cylinders 427 to work.

When the drill rod rotating piece 44 is used, when a first drill rod is gradually driven into a drilling surface along with the pushing of the drill rod rotating piece 44, and the drill rods need to be spliced again, the second clamping head clamps the part, protruding out of the drilling surface, of the first drill rod, the drill rod rotating piece 44 is reset, one end of the second drill rod is clamped by the first clamping head, the other end of the second drill rod is fixed with the drill rod rotating piece 44, and the drill rod rotating piece 44 is rotated and pushed to enable the second drill rod and the part, protruding out of the drilling surface, of the first drill rod to be spliced into a whole. Further, the hole can be further punched.

In order to facilitate accurate butt joint between the drill rods, the drill rod clamping piece 42 further comprises a displacement portion, the displacement portion comprises a pair of displacement oil cylinders 428 which are arranged oppositely, the movable ends of the two displacement oil cylinders 428 are respectively hinged with the two first clamping oil cylinders 425, the fixed ends of the two first clamping oil cylinders 425 are hinged with the outer shell 41, the movable ends of the displacement oil cylinders 428 stretch to drive the first clamping oil cylinders 425 to rotate relative to the outer shell 41, and the butt joint position between the drill rods is convenient to adjust.

The drill rod propelling part 43 comprises a propelling oil cylinder 431, a movable pulley block 432, a fixed pulley block 433, a belt part 434, a length adjusting part 435 and a safety limiting part 436, the fixed pulley block 433 is fixed at the fixed end of the propelling oil cylinder 431 on the outer shell 41, the movable pulley block 432 is fixed at the movable end of the propelling oil cylinder 431, one end of the belt part 434 is fixed with the length adjusting part 435, the other end of the belt part bypasses the fixed pulley block 433 and bypasses the movable pulley block 432 on the movable pulley block 432, the length adjusting part 435 is fixed with the drill rod rotating part 44, one end of the safety limiting part 436 is fixed on the drill rod rotating part 44, the other end of the belt part bypasses the fixed pulley block 433, the movable pulley block 432 is fixed, and the safety limiting part 436 is in a natural loose state.

The movable pulley block 432 comprises a pulley frame 4321, a first movable pulley 4322 and a second movable pulley 4323, wherein the first movable pulley 4322 and the second movable pulley 4323 are rotatably arranged on the pulley frame 4321.

The belt member 434 includes a first belt 4341 and a second belt 4342, one end of the first belt 4341 is fixed to the drill rod rotator 44, and the other end of the first belt 4341 passes around the first movable pulley 4322 and is fixed to the outer housing 41, and the first belt 4341 makes the drill rod rotator 44 have a tendency to move toward the drill rod holder 42; one end of the second belt 4342 is fixed to the outer housing 41, and the other end of the second belt 4342 passes through the second movable pulley 4323 and the fixed pulley block 433 and then is fixed to the length adjusting part 435, so that the drill rod rotating member 44 tends to be away from the drill rod clamping member 42 due to the second belt 4342.

As shown in fig. 9, in order to make the movable pulley block 432 smoothly move along with the movable end of the thrust cylinder 431, the drill rod propelling member 43 further includes a guide assembly 437, where the guide assembly 437 includes a pair of guide rods 4371 and a pair of sliding abutment wheels 4372, the pair of guide rods 4371 are disposed on both sides of the pulley frame 4321 along the telescopic direction of the movable end of the thrust cylinder 431, the guide rods 4371 are fixed to the outer housing 41, the pair of sliding abutment wheels 4372 are movably disposed on the surface of the pulley frame 4321 facing the guide rods 4371, and the pair of sliding abutment wheels 4372 are respectively in sliding abutment with the pair of guide rods 4371.

In this embodiment, a curved surface matching with the outer surface of the guide rod 4371 is formed on the abutting surface of the sliding abutting wheel 4372 contacting with the guide rod 4371.

The length adjustment portion 435 includes a connection rod 4351, a fixed bottom plate 4352, a movable cover plate 4353, a gasket 4354 and a fixing bolt 4355, the fixed bottom plate 4352 is fixed to the drill rod rotator 44, a plurality of gaskets 4354 are stacked between the fixed bottom plate 4352 and the movable cover plate 4353, the fixing bolt 4535 is inserted into the fixed bottom plate 4352, the gasket 4354 and the movable cover plate 4353, so that the fixed bottom plate 4352, the movable cover plate 4353 and the gasket 4354 are fixed to each other, and the connection rod 4351 is fixed to the movable cover plate 4353 and fixed to one end of the second belt 4342.

In use, the belt is stretched under the action of stress along with the accumulation of the use time, and in order to prolong the use time of the belt, the gasket 4534 between the fixed bottom plate 4532 and the movable cover plate 4533 can be gradually removed, so that the distance between the connecting rod 4531 and the second movable pulley 4323 is matched with the length of the second belt; when the last pad 4534 is removed, the technician is alerted to the need to replace the second belt 4342 with a new one.

The safety limiting part 436 comprises a safety rope, one end of the safety rope is fixed with the drill rod rotating piece 44, and the other end of the safety rope sequentially bypasses the fixed pulley block 433 and the movable pulley block 432 and is fixed on the outer shell 41.

The length of the portion of the safety line between the fixed pulley group 433 and the drill rod rotating member 44 when the thrust cylinder 431 is contracted to the minimum state is slightly smaller than the maximum distance that the drill rod rotating member 44 can slide on the outer housing 41.

When the second belt 4342 is in a normal state, the safety rope is in a loose and unstressed state; when the second belt 4342 is used for a long time, the second belt 4342 may be broken, and the safety rope is tightened to prevent the drill rod rotating member 44 from contacting the drilling surface under the action of gravity and being damaged.

The drill rod rotating member 44 includes a sliding bearing plate 441 and a drilling motor 442, the sliding bearing plate 441 is slidably connected to the sliding rail 411, the drilling motor 442 is fixed to the sliding bearing plate 441, and the length adjusting portion 435 is fixed to the sliding bearing plate 441.

The bottom of the sliding bearing plate 441 is provided with a sliding protrusion 443, the sliding protrusion 443 is provided with a sliding groove, and the sliding rail 411 is embedded in the sliding groove.

The drill rod is fixed with the movable end of the drilling motor 442, the movable end of the drilling motor 442 drives the drill rod to rotate, and the drill rod pushing piece 43 drives the drill rod to move so as to realize spiral drilling.

In order to facilitate the tight splicing between the drill rods, an external thread is arranged at the thinner end of the drill rod, a splicing groove is formed at the other end of the drill rod, the inner diameter of the splicing groove is the same as the outer diameter of the thinner end of the drill rod, and an internal thread matched with the external thread is formed on the inner surface of the splicing groove.

The screwing direction of the external thread and the internal thread is the same as the rotating direction of the movable end of the drilling motor 442. Thus, when the movable end of the drilling motor 442 drives the drill rods to rotate, the drill rods can be connected more tightly.

The movable pulley block moves along the guide rods strictly, so that the movable pulley block is prevented from shaking in the advancing process to influence the success rate of punching.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.