CN117127907A - Compact type top-pulling drilling equipment integrating rotation, cutting and shield - Google Patents
Compact type top-pulling drilling equipment integrating rotation, cutting and shield Download PDFInfo
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- CN117127907A CN117127907A CN202310965183.XA CN202310965183A CN117127907A CN 117127907 A CN117127907 A CN 117127907A CN 202310965183 A CN202310965183 A CN 202310965183A CN 117127907 A CN117127907 A CN 117127907A
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- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000005571 horizontal transmission Effects 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 22
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a compact top-pull drilling device integrating rotation, cutting and shield, which comprises a base, wherein a base body is assembled on the base in a sliding way, and a feeding driving mechanism is arranged on the base body and used for driving the base body to slide back and forth on the base; the hollow shaft is rotatably arranged in the base body, a raised line extending along the length direction of the raised line is arranged on the inner hole wall of the hollow shaft, a drill rod is penetrated in the hollow shaft in a sliding way, a strip-shaped groove extending along the length direction of the drill rod is arranged on the drill rod, and the strip-shaped groove is adapted to the raised line and used for limiting the rotation of the drill rod relative to the hollow shaft; the base body is provided with a limiting mechanism and a rotary driving mechanism, the limiting mechanism is used for limiting the axial sliding of the drill rod relative to the hollow shaft, and the rotary driving mechanism is used for driving the hollow shaft to rotate. The beneficial effects of the invention are as follows: the device has the advantages of simple structure, high transmission efficiency, good compactness, high site construction efficiency and the like.
Description
Technical Field
The invention belongs to the technical field of pipeline construction, and particularly relates to a compact top-pull drilling device integrating rotation, cutting and shield.
Background
Excavation construction and non-excavation construction are two common construction means for municipal pipeline construction. The excavation construction needs to excavate the ditch paved by the pipeline by utilizing the excavation equipment, and fills the ditch after the pipeline is installed, maintained or replaced, so that the construction period is relatively long, and the damage to the surrounding environment is large. The non-excavation construction refers to that various rock-soil drilling equipment is utilized to directly replace and repair various underground pipelines, so that traffic is not blocked, and greenbelts and vegetation are damaged. The trenchless construction technology has the advantages of small environmental impact, small occupied area, short construction period, small influence on traffic and the like, and is widely popularized and used at present.
For this reason, a large number of trenchless underground pipeline drilling apparatuses are on the market. Such as: the Chinese patent publication No. CN112943281A discloses a complete set of equipment of a horizontal guide type top-pull drilling machine, which comprises a drilling machine and a pipe-laying assembly, wherein the drilling machine is used for connecting the pipe-laying assembly to the far end of a drill rod after drilling a horizontal channel in a well, and the drilling machine is used for dragging the pipe-laying assembly back from the original path of the horizontal channel through the drill rod, so that reaming and pipe-laying can be realized. In the description of this document, the mechanism of the drill for realizing the rotation and axial feeding of the drill rod is complex, and it involves a number of components such as a machine table, a slide rail, a slide table, a first driving assembly, a flange plate, a second driving assembly, and the like.
The existing non-excavation underground pipeline drilling equipment has the problems of complex and huge structure and inconvenient field assembly and use, thereby influencing the construction efficiency.
Disclosure of Invention
In view of the above, the invention provides a compact type top broaching device integrating rotation, cutting and shield, which aims to reduce the equipment bulkiness and improve the convenience of field use.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a collect compact top broaching equipment of rotation-cutting-shield integration which the key lies in, includes:
the base is provided with a base body in a sliding manner, and the base body is provided with a feeding driving mechanism for driving the base body to slide back and forth on the base;
the hollow shaft is rotatably arranged in the matrix, a raised line extending along the length direction of the hollow shaft is arranged on the inner hole wall of the hollow shaft, a drill rod is arranged in the hollow shaft in a sliding way, a strip-shaped groove extending along the length direction of the drill rod is arranged on the drill rod, and the strip-shaped groove is adapted to the raised line and used for limiting the rotation of the drill rod relative to the hollow shaft;
the base body is provided with a limiting mechanism and a rotary driving mechanism, the limiting mechanism is used for limiting the axial sliding of the drill rod relative to the hollow shaft, and the rotary driving mechanism is used for driving the hollow shaft to rotate; and
the rotary cutting type drill bit is detachably assembled at the front end of the drill rod, a circular saw blade is arranged on the rotary cutting type drill bit in a circumferential array mode, the cutting direction of the circular saw blade is parallel to the feeding direction of the rotary cutting type drill bit, the circular saw blade at least partially protrudes out of the outer surface of the rotary cutting type drill bit, one end of the rotary cutting type drill bit is constructed into a conical structure, a hydraulic motor is arranged at the other end of the rotary cutting type drill bit, and the hydraulic motor is used for driving the circular saw blades to rotate.
Preferably, the rotary driving mechanism comprises a motor and a horizontal transmission shaft, an output shaft of the motor is arranged above the horizontal transmission shaft along the vertical direction, the output shaft is in power connection with the horizontal transmission shaft through a bevel gear set, the horizontal transmission shaft is arranged above the hollow shaft in parallel, and the output shaft and the horizontal transmission shaft are in power connection through a cylindrical gear set.
Preferably, the bevel gear set and the cylindrical gear set are both in speed reduction transmission.
Preferably, the surface of the drill rod is provided with a plurality of groups of annular grooves which encircle along the circumferential direction of the drill rod, each annular groove is uniformly distributed along the length direction of the drill rod, the limiting mechanism comprises two groups of right-opposite tightening parts, the inner sides of the tightening parts are respectively provided with an arc-shaped positioning block, the two right-opposite arc-shaped positioning blocks can encircle into an annular collar, and the annular collar can be clamped into or withdrawn from the annular groove;
the feeding driving mechanism is a hydraulic cylinder and comprises a cylinder body fixed on a base body and a piston rod with one end telescopically arranged in the cylinder body, and a supporting disc is arranged at the other end of the piston rod.
Preferably, the limiting mechanism further comprises two groups of elastic components and two groups of drivers, wherein the elastic components are arranged between the two groups of tightening components and used for tightening and folding the two groups of tightening components; the two groups of drivers are in one-to-one correspondence with the two groups of tightening members, and are used for driving the tightening members to move outwards against the resistance of the elastic assembly.
Preferably, two sets of the tightening members are internally provided with assembly channels positioned in the same axial direction, the elastic assembly comprises a guide rod and two sets of springs, two ends of the guide rod are respectively and slidably arranged in the assembly channels of the two sets of tightening members, the end parts of two ends of the guide rod are respectively provided with a supporting structure, the bottom of the assembly channel is provided with a supporting table, and the springs are arranged between the supporting table and the supporting structure.
Preferably, the base is rectangular frame structure, and it is enclosed by four rectangle steels, the base member includes the board of sliding and can dismantle the framework of installing on the board of sliding through the bolt, the board both ends of sliding all are equipped with outside open spout, the spout slip cover is in on the rectangle steel of base both sides, the framework both sides are equipped with downwardly extending's shielding part, and shielding part is located the outside open department of spout for restrict the spout and deviate from on the rectangle steel.
Preferably, one end of the drill rod is provided with a threaded joint, and the other end of the drill rod is provided with a threaded inner hole matched with the threaded joint.
Preferably, the rotary cutting type drill bit is rotatably provided with four saw blade shafts which are square and arranged at four points, the central lines of the four saw blade shafts are positioned in the direction of the cutting line of the circular section of the rotary cutting type drill bit, and each circular saw blade is fixedly sleeved on the four saw blade shafts in a one-to-one correspondence manner;
the rotary cutting type drill bit is rotationally provided with a central transmission shaft which is arranged along the central transmission shaft and four radial transmission shafts which are arranged along the radial direction of the central transmission shaft, the outer ends of the four radial transmission shafts are in one-to-one correspondence power connection with the four saw blade shafts, and the inner ends of the four radial transmission shafts are in power connection with the central transmission shaft;
the hydraulic motor is connected with the central transmission shaft through a coupler in a coaxial power manner.
Compared with the prior art, the invention has the beneficial effects that:
1. when the compact top-pulling drilling equipment provided by the invention is used for non-excavation drilling construction, the rotary driving mechanism drives the hollow shaft to rotate, and the drill rod can synchronously rotate along with the hollow shaft, so that the rotary cutting motion of the top-pulling drilling equipment on soil is realized. After the top pulling drill equipment is arranged in a repair well of an underground pipe network in a descending mode, the feeding driving mechanism and the axial limiting mechanism act alternately, and continuous feeding movement of the drill rod can be achieved.
2. The compact top-pull drilling equipment provided by the invention has the advantages that the drill rod is connected in the hollow shaft in a sliding spline mode, and the limiting mechanism is arranged at the side part of the matrix corresponding to the position where the drill rod penetrates out to axially position the drill rod, so that compared with the traditional top-pull drilling equipment, the compact top-pull drilling equipment has the advantages that the structure compactness is simplified, the device is easier to be placed and installed in a maintenance well, and the device has the advantages of simple structure, high transmission efficiency, compactness, high site construction efficiency and the like.
3. If the rotary cutting type drill bit is connected to the front end of the drill rod, when the reaming construction is carried out, the top pulling drilling equipment pulls the drill bit to axially move, the hydraulic motor drives each saw blade to rotate, and therefore soil layers on the hole walls can be cut and decomposed, the drill bit can be fed more smoothly, and the purpose of improving the construction efficiency is achieved. In addition, by adopting the rotary cutting type drill bit, the top pulling drilling machine only needs to perform axial feeding, the drill bit rotation is not required to be controlled, and the structural complexity of the top pulling drilling machine is facilitated to be simplified.
4. The equipment has reasonable structural design, has the advantages of high compactness, convenient field installation and disassembly, capability of executing trenchless maintenance or newly-built construction without reaming, and the like, and has wide market application prospect.
Drawings
FIG. 1 is a reference view of a state of use of a compact roof pull drilling apparatus A in downhole trenchless construction;
fig. 2 is a schematic perspective view of a compact top broaching machine a;
FIG. 3 is a cross-sectional view of a compact top broaching apparatus A;
fig. 4 is a sectional view showing the operation principle of the limit mechanism 6;
FIG. 5 is an exploded view of two sets of tightening members 6a and their internal elastic assemblies 6b in the positioning mechanism 6;
fig. 6 is a schematic view of the structure of the drill rod 5;
fig. 7 is a schematic structural view of the hollow shaft 4;
FIG. 8 is a schematic view showing the structure of the base 2, the structure of the base 1 and the sliding assembly connection relationship therebetween;
fig. 9 is a schematic view of the rotary-cut drill 8;
FIG. 10 is a cross-sectional view taken along line C-C of FIG. 9;
fig. 11 is a schematic structural view of the bracket 8 h.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 2 and 3, a compact type top broaching machine a mainly involves a base 1, a base 2, and a feed drive mechanism 3, a hollow shaft 4, a drill rod 5, a limit mechanism 6, and a rotary drive mechanism 7 which are assembled on the base 2. Wherein the hollow shaft 4 is rotatably mounted inside the base body 2, and the rotary driving mechanism 7 is used for driving the hollow shaft 4 to rotate. As can be seen from fig. 7, the inner hole wall of the hollow shaft 4 is provided with a convex strip 4a extending along the length direction, and as can be seen from fig. 6, the outer surface of the drill rod 5 is provided with a strip-shaped groove 5a extending along the length direction, the strip-shaped groove 5a is adapted to the convex strip 4a, the drill rod 5 can be slidably arranged in the hollow shaft 4 along the axis, the strip-shaped groove 5a is matched with the convex strip 4a, and the drill rod 5 can be ensured to synchronously rotate along with the hollow shaft 4. A limiting mechanism 6 is fitted on the side of the base body 2, which acts to limit the axial sliding of the drill rod 5. The base body 2 is slidably assembled on the base 1, the feeding driving mechanism 3 is a hydraulic cylinder fixed on the base body 2, the hydraulic cylinder comprises a cylinder body 3a fixed on the base body 2 and a piston rod 3b with one end telescopically installed in the cylinder body 3a, and a supporting disc 3c is arranged at the other end of the piston rod 3 b.
Based on the above structure, during non-excavation drilling construction, the rotary driving mechanism 7 drives the hollow shaft 4 to rotate, and the drill rod 5 synchronously rotates along with the hollow shaft 4, so that the rotary cutting motion of the top-pull drilling equipment A on soil can be realized. Meanwhile, referring to fig. 1, after the top-pull drilling apparatus a is lowered down to the workover well B installed in the underground pipe network, the specific installation includes fixing the base 1 in the workover well B, and fixing the supporting plate 3c on the wall of the workover well B. Then, a piston rod 3b of the hydraulic oil cylinder stretches and contracts to drive the base body 2 to slide back and forth relative to the base 1, so that axial feeding movement of the drill rod 5 in the top-pull drilling equipment A is realized.
Referring to fig. 3, the drill rod 5 is connected in the hollow shaft 4 in a sliding spline manner, and a limiting mechanism 6 is arranged at the side part of the base body 2 corresponding to the position where the drill rod 5 penetrates out to axially position the drill rod 5.
In this embodiment, please refer to fig. 8, the base 1 is configured as a rectangular frame, which is surrounded by four rectangular steels 1a, the base 2 includes a sliding plate 2a and a frame body 2b detachably mounted on the sliding plate 2a by bolts, both ends of the sliding plate 2a are provided with sliding grooves 2a1 with open outer sides, the sliding grooves 2a1 are slidably sleeved on the rectangular steels 1a on both sides of the base 1, both sides of the frame body 2b are provided with shielding parts 2b1 extending downwards, and the shielding parts 2b1 are located at the open outer sides of the sliding grooves 2a1 to limit the sliding grooves 2a1 from falling out of the rectangular steels 1 a. Four corners of the base 1 are provided with fixing seats 1b. So designed, at the underground pipe network construction site position, the base 1 is fixed at the bottom of the inspection well B through 4 fixing seats 1B, then the sliding grooves 2a1 at two ends of the sliding plate 2a are sleeved on the rectangular steel 1a, then the frame body 2B is lowered onto the sliding plate 2a, bolts are punched at the screw holes B for locking connection, and the underground assembly of the matrix 2 can be realized. Therefore, the base body 2 structure, the base 1 structure and the sliding assembly connection mode between the base body 2 structure and the base 1 structure can be conveniently assembled and built in a construction site.
In this embodiment, referring to fig. 3, the rotary driving mechanism 7 includes a motor 7a and a horizontal transmission shaft 7c, an output shaft 7a1 of the motor 7a is arranged above the horizontal transmission shaft 7c along a vertical direction, the output shaft 7a1 is in power engagement with the horizontal transmission shaft 7c through a bevel gear set 7b, the horizontal transmission shaft 7c is arranged above the hollow shaft 4 in parallel, and the two are in power engagement through a cylindrical gear set 7 d. In such design, the whole rotary driving mechanism 7 is installed in the frame body 2B of the base body 2 in a vertical posture, and can be adapted to the depth structure of the overhaul well B, so that the convenience of assembly is improved. Further, the bevel gear set 7b and the cylindrical gear set 7d are both reduction transmission components, so that considering, larger rotation torque can be provided for the drill rod 5, and the trenchless reaming efficiency and reliability are improved.
Referring to fig. 6, in order to facilitate the limiting mechanism 6 to axially limit the drill rod 5, a plurality of groups of annular grooves 5b surrounding along the circumferential direction of the drill rod 5 are provided on the surface of the drill rod 5, and each annular groove 5b is uniformly distributed along the length direction of the drill rod 5. As can be seen by referring to fig. 4 and 5, the limiting mechanism 6 includes two sets of tightening parts 6a opposite to each other and arranged at two sides of the drill rod 5, the inner sides of the tightening parts 6a are respectively provided with an arc-shaped positioning block 6a1, the tightening parts 6a are in a semicircular structure, after the two sets of tightening parts 6a are surrounded together, the two opposite arc-shaped positioning blocks 6a1 can enclose an annular collar a, and the annular collar a is clamped into the annular groove 5b to axially limit the drill rod 5. In order to improve the limiting reliability, a group of arc-shaped positioning blocks 6a1 are respectively arranged at two axial ends of the inner side of the tightening part 6a, an avoidance groove 6a3 is formed between the two groups of arc-shaped positioning blocks 6a1, and the avoidance groove 6a3 can avoid physical interference between the tightening part 6a and annular protruding parts between two annular grooves 5b of the drill rod 5.
In order to achieve a continuous axial feed of the drill rod 5, the feed drive mechanism 3 and the stop mechanism 6 should be required to be operated alternately. The method comprises the following steps: firstly, the limiting mechanism 6 applies axial limiting to the drill rod 5, the feeding driving mechanism 3 drives the drill rod 5, the base body 2, the hollow shaft 4 and the like to integrally move forward, then the limiting mechanism 6 releases the axial limiting to the drill rod 5, and the feeding driving mechanism 3 moves backwards again to return to the initial position. And so on, continuous axial feeding of the drill rod 5 can be achieved.
Therefore, the embodiment also provides a specific design structure capable of enabling the limiting mechanism 6 to alternately axially limit and release the limiting of the drill rod 5, as follows:
referring to fig. 4 and 5, the limiting mechanism 6 is configured with two groups of elastic components 6b and two groups of drivers 6c, the two groups of elastic components 6b are symmetrically arranged at two ends of the two groups of tightening parts 6a in the diameter direction, any elastic component 6b is connected between the two groups of tightening parts 6a, and under the action of the elastic components 6b, the arc-shaped positioning blocks 6a1 of the two groups of tightening parts 6a can tighten the annular groove 5b of the closed drill rod 5, so as to realize axial limiting. The two sets of drivers 6c are in one-to-one correspondence with the two sets of tightening parts 6a, and are used for driving the tightening parts 6a to outwards move against the resistance of the elastic component 6b, so that the arc-shaped positioning blocks 6a1 can leave the annular groove 5b to achieve the effect of releasing limit.
In this embodiment, the two sets of tightening members 6a are internally provided with an assembly channel 6a2 located in the same axial direction, the elastic component 6b includes a guide rod 6b1 and two sets of springs 6b2, two ends of the guide rod 6b1 are respectively slidably mounted in the assembly channel 6a2 of the two sets of tightening members 6a, two end portions of the two ends of the guide rod 6b1 are respectively provided with a supporting structure 6b11, a supporting table 6a21 is arranged at the bottom of the assembly channel 6a2, and the springs 6b2 are supported and mounted between the supporting table 6a21 and the supporting structure 6b 11. Based on this, when no external force acts, the four springs 6b2 of the two sets of elastic assemblies 6b can ensure that the two sets of tightening members 6a are stably and reliably surrounded in the circumferential direction of the drill rod 5.
In this embodiment, the driver 6c includes an oil cylinder 6c2 mounted on a side portion of the base 2, and a sliding component 6c1 capable of sliding along a radial direction of the tightening component 6a, where the sliding component 6c1 is fixedly connected with the tightening component 6a, based on which the oil cylinder 6c2 drives the sliding component 6c1 to move radially outwards along the drill rod 5, so that the corresponding tightening component 6a can be driven to move outwards against the resistance of the spring 6b2, thereby releasing the restriction on the axial direction of the drill rod 5. Further, for convenience of installation, referring to fig. 2 and 4, the sliding component 6c1 includes an arc-shaped piece 6c11 and two guide posts 6c12 extending outwards from the outer side of the arc-shaped piece 6c11, the inner side of the arc-shaped piece 6c11 is fixedly connected with the tightening component 6a through a magnetic steel 6c3, the side of the base body 2 is provided with a sliding support 2c, and the two guide posts 6c12 are slidably connected with the sliding support 2 c.
As shown in fig. 6, one end of the drill rod 5 is provided with a threaded joint 5c, the other end of the drill rod 5 is provided with a threaded inner hole 5d matched with the threaded joint 5c, and by means of the design, the drill rod 5 can be assembled section by section under the manhole B by combining the alternate running of the axial limit mechanism 6 and the release limit of the drill rod 5, so that the convenience of the top pulling drill equipment in non-excavation site use is greatly improved.
Further, referring to fig. 3 and 6, the threaded joint 5c is configured as a conical ring table structure, and the drill rod 5 is a hollow rod with a hollow passage 5e extending through the hollow rod along the axial direction.
As shown in fig. 1, the top-pull drilling apparatus is further provided with a rotary-cut drill bit 8, and the rotary-cut drill bit 8 is detachably mounted at the front end of the drill rod 5. As can be seen from fig. 9, the rotary cutting type drill 8 is provided with circular saw blades 8a in a circumferential array, the rotary cutting direction of the circular saw blades 8a is parallel to the feeding direction of the rotary cutting type drill 8, and the circular saw blades 8a at least partially protrude from the outer surface of the rotary cutting type drill 8, one end of the rotary cutting type drill 8 is configured into a conical structure 8g, the other end is provided with a hydraulic motor 8b, and the hydraulic motor 8b is used for driving each circular saw blade 8a to rotate.
Referring to fig. 1, after the drill rod 5 of the top-pull drilling device drills a small hole between two adjacent overhaul wells B by adopting the rotary-cut drill bit 8 designed as above, the rotary-cut drill bit 8 is installed at the distal end of the drill rod 5, and then the top-pull drilling device drags the rotary-cut drill bit 8 back to the overhaul well where the top-pull drilling device is located by means of the axial feed control function of the top-pull drilling device, and in the back-dragging process, the hydraulic motor 8B drives each circular saw blade 8a to rotate, so that the reaming construction of an underground pipe network can be easily realized.
Referring to fig. 10 again, it can be seen that four saw blade shafts 8c arranged in square four points are rotatably mounted on the rotary-cut drill bit 8, the center lines of the four saw blade shafts 8c are located in the direction of the cutting line of the circular section of the rotary-cut drill bit 8, and each circular saw blade 8a is fixedly sleeved on the four saw blade shafts 8c in a one-to-one correspondence manner. The rotary cutting type drill bit 8 is rotatably provided with a central transmission shaft 8d arranged along the central line direction and four radial transmission shafts 8e arranged along the radial direction, the outer ends of the four radial transmission shafts 8e are in one-to-one correspondence power connection with the four saw blade shafts 8c, and the inner ends of the four radial transmission shafts 8e are in power connection with the central transmission shaft 8 d. The hydraulic motor 8b is in coaxial power connection with the central transmission shaft 8d through a coupling 8 f. Based on this, the hydraulic motor 8b is operated, and thus the four circular saw blades 8a can be driven to rotate in synchronization.
Further, referring to fig. 11, for easy assembly of the saw blade shaft 8c and the radial transmission shaft 8e, the rotary-cut drill 8 is fixedly embedded with a bracket 8h, the bracket 8h is an octahedral hollow member, and has eight mounting planes 8i surrounding along the circumferential direction thereof, four saw blade shafts 8c are respectively rotatably mounted on the four mounting planes 8i through a support seat d, and the four radial transmission shafts 8e penetrate through the other four mounting planes 8i outwards in a one-to-one correspondence. By means of the design, power transmission can be achieved by arranging the transmission component 8k between the saw blade shaft 8c and the radial transmission shaft 8e and between the radial transmission shaft 8e and the central transmission shaft 8d, and the device has the advantages of being reasonable in structural design, high in compactness and good in reliability, and in the embodiment, the transmission component 8k is a bevel gear component preferentially.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A rotary-cutting-shield integrated compact roof pull drilling apparatus (a), characterized by comprising:
the base (1), the base (1) is slidably provided with a base body (2), and the base body (2) is provided with a feeding driving mechanism (3) for driving the base body (2) to slide back and forth on the base (1);
the hollow shaft (4) is rotatably arranged in the base body (2), a raised line (4 a) extending along the length direction of the hollow shaft is arranged on the inner hole wall of the hollow shaft (4), a drill rod (5) is arranged in the hollow shaft (4) in a sliding mode, a strip-shaped groove (5 a) extending along the length direction of the drill rod is arranged on the drill rod (5), and the strip-shaped groove (5 a) is adaptive to the raised line (4 a) and used for limiting the rotation of the drill rod (5) relative to the hollow shaft (4);
the base body (2) is provided with a limiting mechanism (6) and a rotary driving mechanism (7), the limiting mechanism (6) is used for limiting the axial sliding of the drill rod (5) relative to the hollow shaft (4), and the rotary driving mechanism (7) is used for driving the hollow shaft (4) to rotate; and
the rotary cutting type drill bit (8) is detachably assembled at the front end of the drill rod (5), circular saw blades (8 a) are arranged in a circumferential array mode, the rotary cutting direction of the circular saw blades (8 a) is parallel to the feeding direction of the rotary cutting type drill bit (8), the circular saw blades (8 a) at least partially protrude out of the outer surface of the rotary cutting type drill bit (8), one end of the rotary cutting type drill bit (8) is constructed into a conical structure, a hydraulic motor (8 b) is arranged at the other end of the rotary cutting type drill bit, and the hydraulic motor (8 b) is used for driving the circular saw blades (8 a) to rotate.
2. The rotary-cutting-shield integrated compact top broaching machine of claim 1, wherein: four saw blade shafts (8 c) which are square and arranged at four points are rotatably arranged in the rotary cutting type drill bit (8), the central lines of the four saw blade shafts (8 c) are positioned in the direction of the cutting line of the circular section of the rotary cutting type drill bit (8), and the circular saw blades (8 a) are fixedly sleeved on the four saw blade shafts (8 c) in a one-to-one correspondence manner;
the rotary cutting type drill bit (8) is rotatably provided with a central transmission shaft (8 d) arranged along the central line direction and four radial transmission shafts (8 e) arranged along the radial direction, the outer ends of the four radial transmission shafts (8 e) are in one-to-one correspondence power connection with the four saw blade shafts (8 c), and the inner ends of the four radial transmission shafts are in power connection with the central transmission shaft (8 d);
the hydraulic motor (8 b) is coaxially and dynamically connected with the central transmission shaft (8 d) through a coupler (8 f).
3. The rotary-cutting-shield integrated compact top broaching machine of claim 2, wherein: the rotary cutting type drill bit (8) is internally and fixedly embedded with a support (8 h), the support (8 h) is an octahedral hollow member, the support is provided with eight installation planes (8 i) which encircle along the circumferential direction of the support, four saw blade shafts (8 c) are respectively rotatably installed on the four installation planes (8 i) through one supporting seat (d), and four radial transmission shafts (8 e) correspondingly penetrate out of the other four installation planes (8 i) outwards one by one.
4. The rotary-cutting-shield integrated compact top broaching machine of claim 1, wherein: the rotary driving mechanism (7) comprises a motor (7 a) and a horizontal transmission shaft (7 c), an output shaft (7 a 1) of the motor (7 a) is arranged above the horizontal transmission shaft (7 c) along the vertical direction, the output shaft (7 a 1) is in power connection with the horizontal transmission shaft (7 c) through a bevel gear set (7 b), the horizontal transmission shaft (7 c) is arranged above the hollow shaft (4) in parallel, and the output shaft (7 a 1) and the horizontal transmission shaft are in power connection through a cylindrical gear set (7 d).
5. The rotary-cutting-shield integrated compact top broaching machine of claim 4, wherein: the bevel gear set (7 b) and the cylindrical gear set (7 d) are both in speed reduction transmission.
6. The rotary-cutting-shield integrated compact top broaching machine of claim 1, wherein: the surface of the drill rod (5) is provided with a plurality of groups of annular grooves (5 b) which encircle along the circumferential direction of the drill rod, each annular groove (5 b) is uniformly distributed along the length direction of the drill rod (5), the limiting mechanism (6) comprises two groups of right-opposite tightening parts (6 a), the inner sides of the tightening parts (6 a) are respectively provided with an arc-shaped positioning block (6 a 1), the two right-opposite arc-shaped positioning blocks (6 a 1) can encircle into an annular collar (a), and the annular collar (a) can be clamped into or withdrawn from the annular groove (5 b);
the feeding driving mechanism (3) is a hydraulic cylinder and comprises a cylinder body (3 a) fixed on the base body (2) and a piston rod (3 b) with one end telescopically installed in the cylinder body (3 a), and a supporting disc (3 c) is arranged at the other end of the piston rod (3 b).
7. The rotary-cutting-shield integrated compact top broaching machine of claim 6, wherein: the limiting mechanism (6) further comprises two groups of elastic assemblies (6 b) and two groups of drivers (6 c), wherein the elastic assemblies (6 b) are arranged between the two groups of tightening components (6 a) and are used for tightening and folding the two groups of tightening components (6 a); the two groups of drivers (6 c) are in one-to-one correspondence with the two groups of tightening members (6 a) and are used for driving the tightening members (6 a) to move outwards against the resistance of the elastic assembly (6 b).
8. The rotary-cutting-shield integrated compact top broaching machine of claim 7, wherein: two sets of the tightening parts (6 a) are internally provided with assembly channels (6 a 2) which are located in the same axial direction, the elastic component (6 b) comprises a guide rod (6 b 1) and two sets of springs (6 b 2), two ends of the guide rod (6 b 1) are respectively and slidably arranged in the assembly channels (6 a 2) of the two sets of the tightening parts (6 a), two end parts of the two ends of the guide rod (6 b 1) are respectively provided with a supporting structure (6 b 11), the bottom of the assembly channel (6 a 2) is provided with a supporting table (6 a 21), and the springs (6 b 2) are arranged between the supporting table (6 a 21) and the supporting structure (6 b 11).
9. The rotary-cutting-shield integrated compact top broaching machine of claim 1, wherein: the base (1) is of a rectangular frame structure and is surrounded by four rectangular steels (1 a), the base body (2) comprises a sliding plate (2 a) and a frame body (2 b) detachably mounted on the sliding plate (2 a) through bolts, sliding grooves (2 a 1) with open outer sides are formed in two ends of the sliding plate (2 a), the sliding grooves (2 a 1) are slidably sleeved on the rectangular steels (1 a) on two sides of the base (1), shielding parts (2 b 1) extending downwards are arranged on two sides of the frame body (2 b), and the shielding parts (2 b 1) are located at the open outer sides of the sliding grooves (2 a 1) and used for limiting the sliding grooves (2 a 1) from falling out of the rectangular steels (1 a).
10. The rotary-cutting-shield integrated compact top broaching machine of claim 1, wherein: one end of the drill rod (5) is provided with a threaded joint (5 c), and the other end of the drill rod is provided with a threaded inner hole (5 d) matched with the threaded joint (5 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310965183.XA CN117127907A (en) | 2023-07-31 | 2023-07-31 | Compact type top-pulling drilling equipment integrating rotation, cutting and shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310965183.XA CN117127907A (en) | 2023-07-31 | 2023-07-31 | Compact type top-pulling drilling equipment integrating rotation, cutting and shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117127907A true CN117127907A (en) | 2023-11-28 |
Family
ID=88861910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310965183.XA Pending CN117127907A (en) | 2023-07-31 | 2023-07-31 | Compact type top-pulling drilling equipment integrating rotation, cutting and shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117127907A (en) |
-
2023
- 2023-07-31 CN CN202310965183.XA patent/CN117127907A/en active Pending
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