CN214327776U - Reamer for tapping hole of converter - Google Patents
Reamer for tapping hole of converter Download PDFInfo
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- CN214327776U CN214327776U CN202023047605.6U CN202023047605U CN214327776U CN 214327776 U CN214327776 U CN 214327776U CN 202023047605 U CN202023047605 U CN 202023047605U CN 214327776 U CN214327776 U CN 214327776U
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Abstract
The invention relates to the technical field of maintenance equipment of a steelmaking converter, in particular to a reamer for a tapping hole of the converter, which comprises a drill rod, a drill bit and a connecting pin, wherein the drill bit is connected to one end of the drill rod and is connected with the drill rod through the connecting pin, and the joint of the drill bit and the drill rod adopts a concave-convex shaft sleeve structure; the plug plate type drill bit is simple in structure, convenient to process and manufacture, low in manufacturing cost, high in universality, high in tool bit wear resistance, long in service life, not prone to fracture and falling and good in service performance under a high-temperature condition.
Description
Technical Field
The invention relates to the technical field of maintenance equipment of a steel-making converter, in particular to a reamer for a steel tapping hole of the converter.
Background
The steel tapping hole of a converter of a steel plant is gradually reduced in the smelting process, and the steel tapping time required by the process cannot be ensured, so that the quality of molten steel is influenced, and frequent replacement of the steel tapping hole is an indispensable process in the smelting operation in front of the converter. The reamer is arranged on a telescopic arm of the furnace dismantling machine, and steel slag on the steel tapping hole is cut by a reamer bit rotating at a high speed by utilizing the rotation and the extension of the telescopic arm, so that the reaming operation of the steel tapping hole of the steel-making converter is completed. Because the steel passing amount of a steel outlet is large, the reamer is scoured and oxidized and eroded by high-temperature molten steel, the working environment of the reamer is extremely bad, the existing reamers have the problems of low wear resistance and impact resistance, easy damage at high temperature, easy breakage or falling of a cutter head of a drill bit of the reamer and the like. Wherein, the drill bit of the reamer is the core part of the reamer, and the drill bit determines the hole diameter of the reamer and the load force capable of bearing. The existing reamer drill bit with higher precision in the current market is expensive, the structure of the existing reamer drill bit is often more complex, and the existing reamer drill bit is not suitable for the application condition with low precision requirement. In addition, the hole diameter of the existing reamer bit is often fixed, which is inconvenient to expand according to the actual production needs. Therefore, there is a need for improved methods and structures for fabricating the same.
Disclosure of Invention
The invention aims to provide a reamer for a converter tapping hole, which has the advantages of simple structure, light weight, convenience in processing and manufacturing, low manufacturing cost, high universality, high wear resistance of a cutter head, long service life and difficulty in breaking and falling.
In order to solve the technical problem, the utility model relates to a converter tapping hole reamer which comprises a drill rod, a drill bit and a connecting pin, wherein the drill bit is connected with one end of the drill rod and is connected with the drill rod through the connecting pin, and the joint of the drill bit and the drill rod adopts a concave-convex shaft sleeve structure; the drill bit is including the center pin, the tool bit base, the tool bit seat, tool bit and closure plate, the center pin is the straight axis, center pin one end is connected with the drilling rod, the welding of the center pin other end has the tool bit base, tool bit base shape is right triangle, the welding has the tool bit seat on the tool bit base top surface, the tool bit seat is the rectangle lath, be equipped with the taper hole on the tool bit seat, the tool bit is big end down's toper structure, the tool bit bottom is connected in the taper hole on the tool bit seat, the closure plate is connected in the tool bit bottom, the closure plate welding is in the taper hole on the tool bit seat.
The drill rod is connected with the drill bit through a pin shaft, so that the drill bit can be conveniently replaced after being worn. The drill rod and the drill bit are connected through the pin shaft, and the inner structure of the drill rod and the drill bit is in a concave-convex shaft sleeve structure form, so that the connection strength of the drill bit and the drill rod is improved, and the drill bit is prevented from being separated from the drill rod due to the breakage of the pin shaft in the using process. The cutter head base is in the shape of a right triangle, and the diameter of the big end of the drill bit is controlled by adjusting the lengths of the two right-angle sides.
Further, the taper hole on the tool bit seat is equipped with a plurality ofly, and a plurality of taper holes all are connected with tool bit and closure plate along the linear equipartition of tool bit seat length direction in the taper hole on every tool bit seat, tool bit base on the center pin welding have a plurality ofly, a plurality of tool bit bases along the axis circumference equipartition of center pin, the tool bit seat is equipped with a plurality ofly, all welds on every tool bit base has the tool bit seat, a plurality of tool bits on two adjacent tool bit seats are staggered along the axial and are arranged.
The cooperation of tool bit and tool bit seat is the taper hole cooperation, and in order to guarantee the intensity of tool bit, the back is packed into the tool bit seat to the tool bit, fills in the closure plate and beats tightly and with closure plate and tool bit seat welding, avoids tool bit and tool bit seat welding. Such a configuration prevents the bit from backing out of the countersink during use. The cutter head adopts alloy 3Cr2W8V, namely, tricolor ditungsten octavanadium as the material of the blade, and has light weight, low price, good use performance under high temperature condition, and the service life of the blade can reach 12 times at least, generally 20-35 times.
Further, the drilling rod including guide arm, connecting pipe, sleeve and rivet, guide arm one end is equipped with flat mouthful, the guide arm other end is pegged graft in connecting pipe one end, the sleeve is pegged graft at the connecting pipe other end, the guide arm passes through rivet connection with the connecting pipe grafting department, the sleeve passes through rivet connection with the connecting pipe grafting department, center pin one end connect on the sleeve.
The flat mouth of the guide rod is used for being connected with a furnace dismantling machine, and the size of the flat mouth of the guide rod is matched with that of the flat mouth of the furnace dismantling machine sleeve, so that the guide rod is convenient to assemble and disassemble. The shaft on the other side of the guide rod is inserted into the connecting pipe, and the connecting pipe is a thick-wall pipe, so that the strength requirement is met, and the overall weight of the drill rod can be reduced. The connecting pipe is connected with the guide rod and the sleeve through rivets, and a welded connection mode can be used according to actual use requirements, so that the purpose of enhancing the connection strength is achieved. In addition, the connection of the guide rod, the connecting tube and the sleeve requires attention to the requirement of coaxiality.
Further, tool bit base and tool bit seat be the forging, the tool bit material is: 3Cr2W 8V. The cutter head base and the cutter head seat are both forged pieces so as to ensure the strength of the cutter head base and the cutter head seat.
Furthermore, the guide rod is made of 42CrMo, the guide rod is modulated and quenched at the flat opening of the guide rod, the quenching hardness is HRC 58-62, and the quenching depth is 6 mm. Tempering and quenching at the flat mouth are required. To improve the hardness and wear resistance.
The invention has the beneficial effects that: the drilling machine comprises a drill rod, a drill bit and a connecting pin, wherein the drill bit is connected to one end of the drill rod and is connected with the drill rod through the connecting pin, and a concave-convex shaft sleeve structure is adopted at the joint of the drill bit and the drill rod; the plug plate type drill bit is simple in structure, convenient to process and manufacture, low in manufacturing cost, high in universality, high in tool bit wear resistance, long in service life, not prone to fracture and falling and good in service performance under a high-temperature condition.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the drill rod of the present invention;
FIG. 3 is a schematic view of the drill according to the present invention;
FIG. 4 is a schematic view of the cutting of the drill of the present application;
fig. 5 is a schematic view of the tool bit base of the present invention.
In the figure: 1. a drill stem; 1-1, a guide rod; 1-2 connecting pipes; 1-3. a sleeve; 1-4, riveting; 2. a drill bit; 2-1, a central shaft; 2-2. a tool bit base; 2-3. a tool bit seat; 2-4. a cutter head; 2-5, blocking plate; 3. and (7) connecting pins.
Detailed Description
As shown in fig. 1-5, the reamer for the tapping hole of the converter comprises a drill rod 1, a drill bit 2 and a connecting pin 3, wherein the drill bit 2 is connected to one end of the drill rod 1, the drill bit 2 is connected with the drill rod 1 through the connecting pin 3, and a concave-convex shaft sleeve structure is adopted at the connection part of the drill bit 2 and the drill rod 1; the drill bit 2 comprises a central shaft 2-1, a bit base 2-2, a bit seat 2-3, a bit 2-4 and a blocking plate 2-5, wherein the central shaft 2-1 is a straight shaft, one end of the central shaft 2-1 is connected with a drill rod 1, the other end of the central shaft 2-1 is welded with the bit base 2-2, the bit base 2-2 is in a right triangle shape, the bit seat 2-3 is welded on the top surface of the bit base 2-2, the bit seat 2-3 is a rectangular lath, a taper hole is arranged on the bit seat 2-3, the bit 2-4 is a taper structure with a small top and a big bottom, the bottom of the bit 2-4 is connected in the taper hole on the bit seat 2-3, the blocking plate 2-5 is connected in the taper hole on the bit seat 2-3, and the blocking plate 2-5 is connected at the bottom of the bit seat 2-4, the blocking plate 2-5 is welded in the taper hole on the tool bit seat 2-3.
The drill rod 1 is connected with the drill bit 2 through a pin shaft 3, so that the drill bit 2 can be conveniently replaced after being worn. The connection of drilling rod 1 and drill bit 2 is except connecting through round pin axle 3, and its inner structure adopts unsmooth axle sleeve structural style to increase the joint strength of drill bit 2 and drilling rod 1 department, prevent that drill bit 2 from deviating from in the drilling rod 1 because round pin axle 3 fracture in the use. The cutter head base 2-2 is in the shape of a right triangle, and the diameter of the big end of the drill bit 2 is controlled by adjusting the lengths of two right-angle sides.
Furthermore, a plurality of taper holes are formed in the tool bit bases 2-3 and are linearly and uniformly distributed along the length direction of the tool bit bases 2-3, a tool bit 2-4 and a blocking plate 2-5 are connected into each taper hole in each tool bit base 2-3, a plurality of tool bit bases 2-2 are welded on the central shaft 2-1, a plurality of tool bit bases 2-2 are uniformly distributed along the circumference of the axis of the central shaft 2-1, a plurality of tool bit bases 2-3 are arranged, each tool bit base 2-2 is welded with each tool bit base 2-3, and a plurality of tool bits 2-4 on two adjacent tool bit bases 2-3 are staggered in the axial direction.
The matching of the tool bit 2-4 and the tool bit seat 2-3 is taper hole matching, in order to ensure the strength of the tool bit 2-4, after the tool bit 2-4 is installed in the tool bit seat 2-3, the blocking plate 2-5 is plugged in to be tightened, the blocking plate 2-5 is welded with the tool bit seat 2-3, and the tool bit 2-4 is prevented from being welded with the tool bit seat 2-3. Such a configuration prevents the cutting head 2-4 from being removed from the countersink during use.
Furthermore, the drill rod 1 comprises a guide rod 1-1, a connecting pipe 1-2, a sleeve 1-3 and a rivet 1-4, wherein a flat opening is formed in one end of the guide rod 1-1, the other end of the guide rod 1-1 is inserted into one end of the connecting pipe 1-2, the sleeve 1-3 is inserted into the other end of the connecting pipe 1-2, the insertion part of the guide rod 1-1 and the connecting pipe 1-2 is connected through the rivet 1-4, the insertion part of the sleeve 1-3 and the connecting pipe 1-2 is connected through the rivet 1-4, and one end of the central shaft 2-1 is connected to the sleeve 1-3.
The flat opening of the guide rod 1-1 is used for being connected with a furnace dismantling machine, and the size of the flat opening of the guide rod 1-1 is consistent with that of a flat opening of a furnace dismantling machine sleeve, so that the guide rod is convenient to assemble and disassemble. The shaft at the other side of the guide rod 1-1 is inserted into the connecting pipe 1-2, and the connecting pipe 1-2 adopts a thick-wall pipe, so that the strength requirement is met, and the whole weight of the drill rod 1 can be reduced. The connecting pipe 1-2 is connected with the guide rod 1-1 and the sleeve 1-3 through rivets, and a welding connection mode can be used according to actual use requirements, so that the purpose of enhancing the connection strength is achieved. In addition, the connection of the guide rod 1-1, the connecting tube 1-2 and the sleeve 1-3 requires attention to the coaxiality requirement.
Further, the tool bit base 2-2 and the tool bit base 2-3 are forged pieces, and the tool bit 2-4 is made of the following materials: 3Cr2W 8V. The cutter head 2-4 is made of alloy 3Cr2W8V, namely, a material of three-chromium, two-tungsten and eight-vanadium, has light weight, low price and good use performance under high temperature, and the service life is as short as 12 times at least, generally 20-35 times. The tool bit base 2-2 and the tool bit seat 2-3 are both forged pieces so as to ensure the strength of the tool bit base and the tool bit seat.
Further, the guide rod 1-1 is made of 42CrMo, the guide rod 1-1 is modulated and quenched at a flat opening of the guide rod 1-1, the quenching hardness is HRC 58-62, and the quenching depth is 6 mm. Tempering and quenching at the flat mouth are required. To improve the hardness and wear resistance.
The invention has the advantages of simple structure, convenient processing and manufacturing, low manufacturing cost, high universality, high wear resistance of the cutter head, long service life, difficult fracture and falling and good service performance under high temperature.
Claims (5)
1. A converter tap hole reamer is characterized in that: the drilling machine comprises a drill rod (1), a drill bit (2) and a connecting pin (3), wherein the drill bit (2) is connected to one end of the drill rod (1), the drill bit (2) is connected with the drill rod (1) through the connecting pin (3), and a concave-convex shaft sleeve structure is adopted at the joint of the drill bit (2) and the drill rod (1); the drill bit (2) comprises a central shaft (2-1), a bit base (2-2), a bit seat (2-3), a bit (2-4) and a blocking plate (2-5), wherein the central shaft (2-1) is a straight shaft, one end of the central shaft (2-1) is connected with the drill rod (1), the other end of the central shaft (2-1) is welded with the bit base (2-2), the bit base (2-2) is in a right triangle shape, the top surface of the bit base (2-2) is welded with the bit seat (2-3), the bit seat (2-3) is a rectangular lath, a taper hole is arranged on the bit seat (2-3), the bit (2-4) is in a taper structure with a small upper part and a large lower part, the bottom of the bit (2-4) is connected in the taper hole on the bit seat (2-3), the blocking plate (2-5) is connected in the taper hole on the bit seat (2-3), the blocking plate (2-5) is connected to the bottom end of the tool bit (2-4), and the blocking plate (2-5) is welded in a taper hole in the tool bit seat (2-3).
2. The reamer for a tap hole of a converter according to claim 1, wherein: the tool bit seat is characterized in that a plurality of taper holes are formed in the tool bit seat (2-3), the taper holes are linearly and uniformly distributed along the length direction of the tool bit seat (2-3), a plurality of tool bits (2-4) and a blocking plate (2-5) are connected into the taper holes in each tool bit seat (2-3), the tool bit seats (2-2) are welded on the central shaft (2-1), the tool bit seats (2-2) are uniformly distributed along the circumference of the axis of the central shaft (2-1), the tool bit seats (2-3) are arranged in a plurality, each tool bit seat (2-2) is welded with one tool bit seat (2-3), and the tool bits (2-4) on two adjacent tool bit seats (2-3) are staggered and arranged along the axial direction.
3. The reamer for a tap hole of a converter according to claim 2, wherein: the drill rod (1) comprises a guide rod (1-1), a connecting pipe (1-2), a sleeve (1-3) and a rivet (1-4), wherein a flat opening is formed in one end of the guide rod (1-1), the other end of the guide rod (1-1) is inserted into one end of the connecting pipe (1-2), the sleeve (1-3) is inserted into the other end of the connecting pipe (1-2), the insertion part of the guide rod (1-1) and the connecting pipe (1-2) is connected through the rivet (1-4), the insertion part of the sleeve (1-3) and the connecting pipe (1-2) is connected through the rivet (1-4), and one end of a central shaft (2-1) is connected to the sleeve (1-3).
4. The reamer for a tap hole of a converter according to claim 3, wherein: the tool bit base (2-2) and the tool bit base (2-3) are forged pieces, and the tool bit (2-4) is made of the following materials: 3Cr2W 8V.
5. The reamer for a tap hole of a converter according to claim 3, wherein: the guide rod (1-1) is made of 42 CrMo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023047605.6U CN214327776U (en) | 2020-12-16 | 2020-12-16 | Reamer for tapping hole of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023047605.6U CN214327776U (en) | 2020-12-16 | 2020-12-16 | Reamer for tapping hole of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214327776U true CN214327776U (en) | 2021-10-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023047605.6U Active CN214327776U (en) | 2020-12-16 | 2020-12-16 | Reamer for tapping hole of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214327776U (en) |
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2020
- 2020-12-16 CN CN202023047605.6U patent/CN214327776U/en active Active
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