CN110821409B - Manufacturing method of reamer with self-righting guide function - Google Patents
Manufacturing method of reamer with self-righting guide function Download PDFInfo
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- CN110821409B CN110821409B CN201911119569.9A CN201911119569A CN110821409B CN 110821409 B CN110821409 B CN 110821409B CN 201911119569 A CN201911119569 A CN 201911119569A CN 110821409 B CN110821409 B CN 110821409B
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 37
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 12
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
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- 239000007787 solid Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000003754 machining Methods 0.000 abstract 1
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- 238000005520 cutting process Methods 0.000 description 2
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- 208000010392 Bone Fractures Diseases 0.000 description 1
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- 206010057071 Rectal tenesmus Diseases 0.000 description 1
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- 239000011248 coating agent Substances 0.000 description 1
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- 239000011148 porous material Substances 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 208000012271 tenesmus Diseases 0.000 description 1
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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
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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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
- E21B10/08—Roller bits
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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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
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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
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Abstract
The invention provides a manufacturing method of a reamer with a self-righting guide function, which comprises the following steps: firstly, forming a main shaft, a plurality of cones, a plurality of centralizing ribs, one or a plurality of cone reinforcing ribs, a centralizing barrel and a base; then, welding a mounting base, a centering barrel and a cone reinforcing rib on the main shaft according to positions; the base and the spindle shaft body are welded and fixed, the right end of the righting barrel and the left side of the base are welded and fixed, and the left end of the righting barrel and a part of the spindle shaft body are welded and fixed to form a sealed gas cavity; one end of the gear wheel reinforcing rib is welded with the right side of the base, and the other end of the gear wheel reinforcing rib is welded with the shaft body of the main shaft; and then, welding and installing a plurality of righting ribs on the righting barrel, and welding and installing a plurality of cones on the cone seat. The manufacturing method of the reamer with the self-righting guide function has the advantages of simple structure, convenience in machining, high strength of the reamer and the like.
Description
Technical Field
The invention relates to large-scale long-distance pipeline directional drilling and crossing construction in oil-gas field oil-gas pipeline ground construction, and belongs to the technical field of drilling or drilling engineering. And more particularly, to a method of manufacturing a reamer having a self-righting guide function.
Background
At present, because the horizontal directional drill mainly passes through a stratum within 30m from the ground, the stratum passing through is broken and complicated, particularly, weathered or completely weathered stratums are mostly used at an earth-entering section and an earth-leaving section close to the ground, and difficulty is brought to directional drilling and hole expansion. However, the construction requirements of the existing horizontal directional drill are continuously increased, the directional drill with the diameter of 1000mm or more is more and more, and the requirements on the structure of the reamer and the processing and manufacturing requirements thereof are also continuously increased.
When common large-scale directional drilling reaming, current major diameter enlarger is great because of self weight, has the tenesmus trend during the reaming, especially brings bigger influence to the shape of pore when carrying out multistage reaming, and the pore-forming shape is mostly big pear shape hole about, and pore-forming quality is unfavorable for the pipeline and returns to drag, seriously influences to returning to drag success rate and pipeline anticorrosive coating, especially to soft geology such as sand bed, mudstone, forms pear shape hole trend and just more obvious. Meanwhile, the reamer does not have a self-righting guide function, and a centralizer is required to be additionally arranged to righting and guiding the reamer along the axial lead direction of the hole. However, the addition of centralizers increases the weight of the connection and the drill rod in the hole, increasing the risk of drill rod breakage.
Disclosure of Invention
The present invention aims to address at least one of the above-mentioned deficiencies of the prior art.
For example, an object of the present invention is to provide a method for manufacturing a reamer having a self-centering guide function, which can solve irregular holes (e.g., pear-shaped holes) that are easily formed by a large-diameter reamer due to dropping during a hole forming process. Another object of the present invention is to provide a method of manufacturing a reamer having a self-centering guide function, in which a drill rod is not easily broken without adding a centralizer and a connection structure. The invention further aims to provide a manufacturing method of the reamer with the self-righting guide function, which is suitable for the formation depth within 30m and the target hole diameter of 1050mm or more and 1200mm or more.
In order to achieve the above object, the present invention provides a method of manufacturing a reamer having a self-righting guide function, the method including the steps of:
first, a spindle, a plurality of cones, a plurality of centralizing ribs, one or more cone reinforcing ribs, a centralizing barrel, and a base are formed.
The main shaft comprises a first medium flow passage, a second medium flow passage and a shaft body, the shaft body is provided with a right end used for being connected with an upstream drill rod and a left end used for being connected with a downstream drilling tool, the first medium flow passage penetrates through the shaft body along the axial direction, and the second medium flow passage penetrates through the shaft body and is crossed and communicated with the first medium flow passage. The base is provided with an inner cavity, a plurality of cone seats and third medium flow passages, the number of the third medium flow passages is equal to that of the cone seats, the inner cavity is communicated with each third medium flow passage, and each third medium flow passage is correspondingly arranged at one cone seat in the cone seats. The righting barrel is provided with a right end connected with the left side of the base and a left end connected with the shaft body of the main shaft. The one or more roller cone reinforcing ribs have one end connected to the right side of the base and the other end connected to the shaft body of the spindle. The cone reinforcing rib is provided with one end connected with the main shaft and the other end connected with the right side of the base.
And then, welding a mounting base, a centering barrel and a cone reinforcing rib on the main shaft according to positions.
The base and the spindle shaft body are welded and fixed, so that an inner cavity of the base is communicated with a second medium flow channel on the spindle shaft body. The right end of the righting barrel is welded and fixed with the left side of the base, and the left end of the righting barrel is welded and fixed with a part of the shaft body of the main shaft, so that the shaft body of the main shaft, the left side surface of the base and the inner part of the righting barrel form a sealed gas cavity. One end of one or more cone reinforcing ribs is welded with the right side of the base, and the other end of the one or more cone reinforcing ribs is welded with the shaft body of the main shaft.
And then, welding and installing a plurality of righting ribs on the righting barrel, and welding and installing a plurality of cones on the cone seat.
Wherein the length extending direction of the plurality of righting ribs is not parallel to the axial lead of the righting barrel; each cone of the plurality of cones is fixedly disposed on the corresponding cone seat such that a reaming medium provided by the corresponding third medium flow passage can act on the cone.
In an exemplary embodiment of the invention, the gas chamber of the righting barrel is air or nitrogen.
In an exemplary embodiment of the invention, the one or more roller cone reinforcing ribs are of a cone-like barrel structure, and the small end and the large end of the cone-like barrel structure are respectively and sequentially fixedly connected with the shaft body of the main shaft and the right side of the base in a sealing manner to form an air cavity capable of inflating and generating buoyancy.
In an exemplary embodiment of the invention, the air cavity of the cone-like barrel structure is air or nitrogen.
In an exemplary embodiment of the invention, the gas cavity of the righting barrel is sized according to the diameter of the counterbore and the buoyancy required.
In an exemplary embodiment of the invention, the diameter of the righting barrel is 300-1500 mm, the diameter of the main shaft is 150-240 mm, the diameter of the base is equivalent to 300-1400 mm, and the diameter of the hole formed by the reamer is 400-1800 mm.
In an exemplary embodiment of the invention, the length of the righting barrel is 500-1200 mm, the length of the main shaft is 1300-2500 mm, and the thickness of the base is 100-300 mm.
In an exemplary embodiment of the invention, the reamer is capable of guiding the reamer along the forward bore to be reamed by means of righting the outer barrel wall of the barrel and/or the contact of the plurality of righting ribs with the inner wall of the bore.
In an exemplary embodiment of the invention, the plurality of cone seats of the base are uniformly circumferentially arranged.
In an exemplary embodiment of the present invention, the plurality of cutter reinforcing ribs are uniformly arranged in a circumferential direction.
Drawings
Figure 1 illustrates a process flow diagram of a method of manufacturing a reamer having a self-righting guide function in accordance with the present invention;
FIG. 2 illustrates a diagram of a pear-shaped tunnel formed using a prior art reamer;
figure 3 shows a schematic diagram of the underreamer manufactured by the method of manufacturing the underreamer of figure 2 having a self-righting guide function;
FIG. 4 shows a schematic structural view of the righting barrel cavity of FIG. 3;
figure 5 shows a pictorial view of a reamer manufactured according to the method of manufacturing a reamer having a self-righting guide function of the present invention;
fig. 6 illustrates a circular tunnel formed using the underreamer of fig. 5.
Reference numerals:
the drilling machine comprises a main shaft 1, a centering barrel 2, a centering rib 3, a cone 4, a base 5, a cone reinforcing rib 6, a self-floating positioning guide part A, a hole forming cutting part B and a drill rod connecting part C.
Detailed Description
Hereinafter, a method of manufacturing a reamer having a self-righting guide function according to the present invention will be described in detail with reference to the exemplary embodiments and the accompanying drawings. It should be noted that "first," "second," "third," and the like are merely for convenience of description and for ease of distinction, and are not to be construed as indicating or implying relative importance. "left", "right", "inner" and "outer" are merely for convenience of description and to constitute relative orientations or positional relationships, and do not indicate or imply that the referenced components must have that particular orientation or position.
Figure 1 illustrates a process flow diagram in one exemplary embodiment of a method of manufacturing a reamer having a self-righting guide function in accordance with the present invention.
In the present embodiment, as shown in fig. 1, the manufacturing method includes the steps of:
first, a spindle, a plurality of cones, a plurality of centralizing ribs, one or more cone reinforcing ribs, a centralizing barrel, and a base are formed, respectively.
The main shaft comprises a first medium flow passage which penetrates through the main shaft along the axial direction of the main shaft and a second medium flow passage which is arranged on the shaft body, the second medium flow passage is communicated with the first medium flow passage, the right end of the main shaft is used for being connected with an upstream drill rod, and the left end of the main shaft is used for being connected with a downstream drilling tool. The reaming medium from the upper drill pipe may pass through the first medium flow passage into the second medium flow passage. The main shaft may be formed by casting or by press working. However, the present invention is not limited thereto as long as the main shaft having the above-described function can be formed.
The base is of a round cake-like structure with an inner cavity, a plurality of cone seats are uniformly distributed on the base along the circumferential direction, a third medium flow channel is arranged at the corresponding position of each cone seat, and the inner cavity of the base is communicated with each third medium flow channel. The base may be formed by casting or by welding. However, the present invention is not limited thereto as long as the base having the above-described function can be formed.
The righting barrel is provided with a right end connected with the left side of the base and a left end connected with the shaft body of the main shaft. Here, the shape of the righting barrel can be formed by casting or welding.
One or more roller cone reinforcing ribs have one end connected to the right side of the base and the other end connected to the shaft body of the spindle. Here, the formation of the reinforcing rib of the cone may be performed by casting, press working, or welding. However, the present invention is not limited thereto as long as the centering rib can be formed. The cone reinforcing rib is provided with one end connected with the main shaft and the other end connected with the right side of the base. It should be noted that, here, the formation of the spindle, the plurality of cones, the plurality of centering ribs, the one or more cone reinforcing ribs, the centering barrel, and the base is not in sequence, and may be performed simultaneously or not at the same time.
And then, welding a mounting base, a centering barrel and a cone reinforcing rib on the main shaft according to positions.
The base and the spindle shaft body are welded and fixed, so that an inner cavity of the base is communicated with a second medium flow channel on the spindle shaft body. Thus, the third medium flow channel on the base can be communicated with the first medium flow channel, the second medium flow channel and the inner cavity to form a channel for the reaming medium to flow out. Then, the right end and the left end of the righting barrel are respectively welded and fixed with the left side of the base and part of the shaft body of the main shaft, so that a sealed gas cavity is formed by the shaft body of the main shaft, the left side surface of the base and the inner part of the righting barrel; and welding one end of one or more cone reinforcing ribs with the right side of the base, and welding the other end of one or more cone reinforcing ribs with the shaft body of the main shaft. It should be noted that, here, the welding and fixing of the centering barrel and the welding and fixing of the roller cone reinforcing rib are not in sequence, and may be performed simultaneously or not.
And then, welding and installing a plurality of righting ribs on the righting barrel, and welding and installing a plurality of cones on the cone seat on the base.
Wherein the length extending direction of each of the plurality of righting ribs is not parallel to the axial lead of the righting barrel; each cone of the plurality of cones is secured to a corresponding cone seat such that a reaming medium provided by a corresponding third medium flow passage can act on the cone. It should be noted that, here, the welding and fixing of the centering rib and the welding and fixing of the cone are not in sequence, and may be performed simultaneously or not; here, the welding manner may be automatic argon arc welding. However, the present invention is not limited thereto, and other welding methods may be employed.
Figure 3 shows a schematic block diagram of an exemplary embodiment of a method of manufacturing a reamer having self-righting guide functionality in accordance with the present invention; fig. 4 shows a schematic structural view of the cavity of the righting barrel of fig. 3.
In the present embodiment, as shown in fig. 3, a method for manufacturing a reamer having a self-centering guide function includes a main shaft 1, a plurality of cones 4, a plurality of centering ribs 3, one or more cone reinforcing ribs 6, and a base 5 and a centering barrel 2 which are sequentially fixed to the main shaft 1 in a sleeved manner.
The main shaft 1 is a cylindrical barrel. For example, the diameter of the preferred main shaft may be 150 to 240mm, and the length of the main shaft may be 1300 to 2500 mm. The right end of the main shaft 1 is fixedly connected with an upstream drill rod so as to transmit the rotating torque generated by the upstream drill rod. For example, the right end of the main shaft can be of an external thread structure, and the main shaft and the internal thread of the upstream drill rod form a fixed connection to rotate along with the rotation of the upstream drill rod. The left end of the main shaft 1 is used for being connected with a downstream drilling tool, and the left end of the main shaft 1 can be of an internal thread structure.
The main shaft 1 is internally provided with a first medium flow passage for the flowing of a hole expanding medium, namely a hollow passage in the main shaft 1, and the first medium flow passage penetrates through the whole main shaft 1. And an opening is formed in the shaft body of the main shaft 1, and the opening is communicated with the first medium flow channel to form a second medium flow channel. Here, the first medium flow passage axial direction and the second medium flow passage axial direction intersect with each other, and the reaming medium from the upstream drill rod can enter the second medium flow passage through the first medium flow passage. Preferably, the first medium flow passage axial direction may be perpendicular to the second medium flow passage axial direction.
Each cone 4 in the plurality of cones 4 is fixedly arranged on a corresponding cone seat on the base 5, and a reaming medium from an upstream drill rod sequentially passes through the first medium flow channel, the second medium flow channel, the inner cavity structure of the base 5 and the third medium flow channel and then is sprayed on each cone 4 to lubricate each cone 4 in the reaming process. For example, the preferred number of cone blocks may be 4 to 12, and the diameter of the counterbore may be 400 to 1800mm, such as 1100mm, 1500mm, etc. Here, the connection manner of the cone and the cone seat may be welding. However, the present invention is not limited thereto as long as the fixed mounting of the base and the cone is achieved.
The roller cone reinforcing ribs 6 are arranged on the right side of the base 5, can act on the end face of the right side of the base 5 to fixedly connect the base 5 with the shaft body of the spindle 1, and can also directly act on each roller cone 4 to fixedly connect each roller cone 4 with the shaft body of the spindle 1. Here, the roller cone reinforcing rib may be an integral cone-like structure, or may be a plurality of cone-like structures composed of a single part. The big end of cone strengthening rib class toper structure is connected with base right side terminal surface fixed seal, and the little one end of class toper structure is connected with main shaft axle body fixed seal to form sealed air cavity between cone strengthening rib, base and main shaft axle body. The air cavity can be air or nitrogen, and can generate buoyancy in mud during reaming to offset partial gravity borne by the reamer. The connection mode of the cone reinforcing rib and the base or the cone and the connection mode of the cone reinforcing rib and the main shaft can be welding, and the cone reinforcing rib enables the cone to keep rigidity in the reaming process, so that damage of the reamer is avoided. However, the present invention is not limited thereto and the roller cone reinforcing ribs may have other shapes as long as the strength of the roller cone can be increased.
In this embodiment, as shown in fig. 4, the righting barrel 2 is a cylinder with a conical end, the left end of the cavity of the righting barrel 2 is in a conical structure, and the top of the conical structure is provided with an opening connected with the spindle body; the right end of the cavity is of a cylindrical structure, and one end of the conical structure, which is not the conical top, is fixedly and hermetically connected with the opening of the cylindrical structure at the right end. Righting 2 right-hand members cylinders of bucket and the left end face sealing fixed connection of base 5, righting 2 left-hand members of bucket circular cone opening and main shaft 1's partial axle body sealing fixed connection for form sealed gas chamber between 1 axle body outside of main shaft, the 2 cavity insides of bucket of righting and the 5 left end faces of base, this gas chamber can make the bucket of righting produce buoyancy in mud and offset the partial gravity that receives the reamer. Meanwhile, the size of the gas cavity of the righting barrel can be determined according to the diameter of the reamed hole of the reamer and the required buoyancy. Preferably, the diameter of the righting barrel can be 300-1500 mm, such as 1000mm, 1350mm and the like, the length of the righting barrel can be 500-1200 mm, and the gas in the gas cavity of the righting barrel can be air or nitrogen. Here, the connection mode of the centering barrel and the base and the connection mode of the centering barrel and the main shaft may be welding. However, the invention is not limited thereto and the righting barrel may be of other shapes as long as it forms a sealed gas chamber that can be inflated and creates buoyancy in the slurry.
In addition, the outer barrel wall of the righting barrel can be provided with a plurality of righting ribs, and the length extending directions of the plurality of righting ribs and the axial lead of the righting barrel are arranged in a cross way and form a certain angle. Here, through setting up a plurality of muscle of righting and right the muscle length extending direction and right barrel axial lead nonparallel setting, can make the mud sediment of discharge duct the place ahead siltation of angle that the reamer utilized the muscle of righting better in the reaming process. During reaming, the left end of the reamer is firstly contacted with the inner wall of the hole channel finished at the previous stage, and the reamer is guided to move forward along the hole channel to be reamed by utilizing the contact between the outer barrel wall of the centering barrel and the inner wall of the hole channel or the contact between a plurality of centering ribs and the inner wall of the hole channel. Meanwhile, the rear end cone wheel part is contacted with the channel to be reamed and then the channel is cut to form the channel to be reamed at the stage. The reamer can be guided to advance along the front hole channel to be reamed by the contact of the outer barrel wall of the centering barrel and the plurality of centering ribs with the inner wall of the hole channel, and the hole channel to be reamed is cut simultaneously by the rear end cone part to form the hole channel to be reamed at the current stage. Here, the muscle of righting can be the cuboid structure of compriseing upper and lower two parts, cuboid upper portion is solid and the surface has the line, and the cuboid lower part is hollow structure and can form little cavity with righting the bucket outer wall, and this little cavity also can play the effect that produces buoyancy and right in mud. For example, the connection mode of the strengthening rib and the strengthening barrel may be welding, however, the invention is not limited thereto, and the strengthening rib may have other shapes as long as the connection of the strengthening rib and the strengthening barrel can be realized and the strengthening function is provided.
Fig. 5 is a pictorial view of an exemplary embodiment of a method of manufacturing a reamer having a self-righting guide function in accordance with the present invention.
In the present embodiment, as shown in fig. 5, a denotes a self-floating positioning guide portion, which is constituted by a righting bucket 2 and a plurality of righting ribs 3; b denotes a reaming cutting portion composed of a base 5 and a plurality of cones 4; c denotes a drill rod connection part, which is constituted by the main shaft 1, the drill rods being connected mainly by means of a screw connection.
Figure 2 shows a diagram of a pear-shaped tunnel formed using a prior art reamer. As shown in fig. 2, in the process of forming a hole by using the conventional reamer, a pear-shaped hole is formed in the hole due to excessive weight of the conventional reamer, so that the quality of the formed hole is affected, and the plough-shaped hole brings about a great hidden trouble to dragging the pipeline. Fig. 6 illustrates a circular tunnel formed using the underreamer of fig. 5. As shown in fig. 6, the hole drilled by the method for manufacturing the reamer with the self-righting guide function according to the present invention has a significantly improved pear-shaped trend compared to the hole drilled by the conventional reamer in fig. 2, which shows that the reamer according to the present invention has a better self-righting guide function. In addition, the manufacturing method of the reamer with the self-righting guide function does not need to add a guide righting device to righting the reamer in the hole along the direction of the axial lead of the hole, reduces the connecting structure which is added with the guide righting device, and reduces the risk of breakage in the reaming process of the drill rod.
When reaming is carried out, the upstream drill rod drives the main shaft 1 to rotate, the main shaft 1 drives the centering barrel 2, the centering rib 3, the base 5, the base reinforcing rib 6 and the cone 4 which are connected with the main shaft to rotate together in a hole channel for reaming, and a reaming medium from the upstream drill rod enters an inner cavity of the base 5 through the first medium flow channel in the main shaft 1, flows out of the reamer through the third medium flow channel and is sprayed on the cone 4 to assist the reamer in reaming.
In summary, the method for manufacturing the reamer with the self-righting guide function according to the present invention has the following advantages:
1. compared with the existing reamer (particularly a rock reamer) with the same diameter, the weight of the reamer manufactured by the method can be effectively reduced by 30 percent, and the problem that pear-shaped holes are formed during reaming due to the fact that the weight of the existing reamer is too large is effectively solved;
2. the processing mode of the reamer is simple and flexible, parts can be formed firstly, and then the reamer is formed in modes such as welding and the like;
3. the reamer manufactured by the method has a self-righting guide function, a righting guide device does not need to be additionally arranged, a primary connecting structure is reduced, and the fracture risk of a drilling tool is reduced.
Although the present invention has been described above in connection with the exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.
Claims (9)
1. A manufacturing method of a reamer with a self-righting guide function for long-distance pipeline directional drilling crossing construction is characterized by comprising the following steps:
first, a spindle, a plurality of cones, a plurality of centralizing ribs, one or more cone reinforcing ribs, a centralizing barrel, and a base are formed, wherein,
the main shaft comprises a first medium flow passage, a second medium flow passage and a shaft body, the shaft body is provided with a right end used for being connected with an upstream drill rod and a left end used for being connected with a downstream drilling tool, the first medium flow passage is arranged in the shaft body in a penetrating mode along the axial direction, and the second medium flow passage is arranged in the shaft body in a penetrating mode and is crossed and communicated with the first medium flow passage; the base is provided with an inner cavity, a plurality of cone seats and third medium flow passages, the number of the third medium flow passages is equal to that of the cone seats, the inner cavity is communicated with each third medium flow passage, and each third medium flow passage is correspondingly arranged at one cone seat in the cone seats; the righting barrel is provided with a right end connected with the left side of the base and a left end connected with the shaft body of the main shaft; the one or more cone reinforcing ribs are provided with one end connected with the right side of the base and the other end connected with the shaft body of the main shaft, the one or more cone reinforcing ribs are of a cone-like barrel structure, and the small end and the large end of the cone-like barrel structure are respectively and sequentially and fixedly connected with the shaft body of the main shaft and the right side of the base in a sealing manner so as to form an air cavity capable of inflating and generating buoyancy;
then, welding a mounting base, a centering barrel and a cone reinforcing rib on the main shaft according to positions,
firstly, welding and fixing the base and the spindle shaft body to enable the inner cavity of the base to be communicated with a second medium flow channel on the spindle shaft body; the right end of the righting barrel is welded and fixed with the left side of the base, and the left end of the righting barrel is welded and fixed with part of the shaft body of the main shaft, so that a sealed gas cavity is formed by the shaft body of the main shaft, the left side surface of the base and the inner part of the righting barrel; one end of the one or more cone reinforcing ribs is welded with the right side of the base, and the other end of the one or more cone reinforcing ribs is welded with the shaft body of the main shaft;
then, a plurality of righting ribs are welded and installed on the righting barrel, a plurality of cones are welded and installed on the cone seat, wherein,
the length extending direction of the plurality of righting ribs is not parallel to the axial lead of the righting barrel; the strengthening rib is of a cuboid structure consisting of an upper part and a lower part, the upper part of the cuboid is solid, the outer surface of the cuboid is provided with grains, and the lower part of the cuboid is of a hollow structure and can form a small cavity with the outer wall surface of the strengthening barrel; each cone of the plurality of cones is fixedly disposed on the corresponding cone seat such that a reaming medium provided by the corresponding third medium flow passage can act on the cone.
2. The method of manufacturing a reamer with a self-righting guide function as claimed in claim 1, wherein the gas chamber of the righting barrel is air or nitrogen.
3. The method for manufacturing a reamer with a self-righting guide function according to claim 1, wherein the air chamber of the cone-like barrel structure is air or nitrogen.
4. The method of manufacturing a self-righting guide reamer as claimed in claim 1, wherein the gas chamber of the righting barrel is sized according to the diameter of the reamer and the buoyancy required.
5. The method for manufacturing a reamer with a self-righting guide function according to claim 1, wherein the diameter of the righting barrel is 300-1500 mm, the diameter of the main shaft is 150-240 mm, the diameter of the base is equivalent to 300-1400 mm, and the diameter of the reamer forming hole is 400-1800 mm.
6. The method of manufacturing a reamer having a self-righting guide function as claimed in claim 1, wherein the length of the righting barrel is 500 to 1200mm, the length of the spindle is 1300 to 2500mm, and the base thickness is equivalent to 100 to 300 mm.
7. The method of manufacturing a reamer with self-righting guide function as claimed in claim 1, wherein the reamer is capable of guiding the reamer along a forward bore to be reamed by means of the outer barrel wall of the righting barrel and/or the contact of the plurality of righting ribs with the inner wall of the bore.
8. The method of manufacturing a reamer having a self-righting guide function as claimed in claim 1, wherein the plurality of cone seats of the base are uniformly arranged in a circumferential direction.
9. The method of manufacturing a reamer having a self-centering guide function according to claim 1, wherein the plurality of cutter reinforcing ribs are uniformly arranged in a circumferential direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911119569.9A CN110821409B (en) | 2019-11-15 | 2019-11-15 | Manufacturing method of reamer with self-righting guide function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911119569.9A CN110821409B (en) | 2019-11-15 | 2019-11-15 | Manufacturing method of reamer with self-righting guide function |
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| CN110821409B true CN110821409B (en) | 2021-11-09 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPR068900A0 (en) * | 2000-10-12 | 2000-11-09 | Transco Manufacturing Australia Pty Ltd | A drilling tool used in horizontal drilling applications |
| CN201034015Y (en) * | 2007-05-15 | 2008-03-12 | 上海管易地下管线工程技术有限公司 | Rock reamer with helical centralizer |
| CN201436365U (en) * | 2009-06-22 | 2010-04-07 | 上海管易地下管线工程技术有限公司 | Split type rock reamer |
| CN201802313U (en) * | 2010-09-21 | 2011-04-20 | 上海管易地下管线工程技术有限公司 | Combined rock reamer |
| CN202788617U (en) * | 2012-07-26 | 2013-03-13 | 中国石油天然气集团公司 | Horizontally oriented reaming device |
| US20150330148A1 (en) * | 2012-11-15 | 2015-11-19 | Edwin G. Spoelstra | Push reamer |
| CN203097717U (en) * | 2012-11-30 | 2013-07-31 | 中国石油天然气集团公司 | Plate and barrel combined-type reamer |
| DE102013013477A1 (en) * | 2013-08-15 | 2015-03-12 | Herrenknecht Ag | Drilling head for expanding a pilot hole to create a borehole |
| HK1198796A2 (en) * | 2015-01-13 | 2015-06-05 | 振華發展有限公司 | Modular drilling reamer |
| CN207160983U (en) * | 2017-09-05 | 2018-03-30 | 天津博为中天钻具有限公司 | A kind of preferably super cone reamer of cleannes |
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