Drill rod device of taphole drill

Abstract

The utility model relates to a drill rod device of an iron notch drill, which comprises a drill rod, a drill bit, a drill bushing and square cotters, the head of the drill rod is connected with the drill bit through arc threads, a drill rod hole is arranged in the drill bushing, the drill rod is inserted in the drill rod hole in a matched mode, a first square cotter groove is arranged on the drill rod inserted in the drill bushing, and a second square cotter groove is arranged in the drill bushing above the first square cotter groove. A square cotter is inserted into a groove body formed by the first square cotter groove and the second square cotter groove, one end of the square cotter is clamped with the side wall of the drill bushing, and the other end of the square cotter is limited through a clamping pin. According to the utility model, not only can the axial movement of the drill rod be limited, but also the radial run-out of the drill rod can be limited. The gap between the drill rod and the rotating sleeve is small, the drill rod shakes slightly, and the drill hole does not deflect. Disassembly and assembly are fast and convenient, maintenance efficiency is improved, and maintenance time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of blast furnace equipment, in particular to a taphole machine drill rod device. Background Art

[0002] The taphole opening machine drill rod is a key part of the ironmaking plant. Its function is to drill the taphole of the blast furnace to realize blast furnace smelting. In the past, the taphole opening machine and the drill rod were connected by threads. Due to the influence of high temperature and dust on site, the thread-carrying part of the bolt and the mother thread were stuck, the torque was large, the thread was damaged, it was difficult to disassemble, and the taphole could not be opened.

[0003] The occurrence of the drill pipe connection thread seizure phenomenon brings great trouble to the normal maintenance work of the ironworks' ironmouth opening machine equipment, and affects the safety of the equipment, and sometimes even has to be dismantled in a destructive manner.

[0004] In addition, due to the use of threaded connection, there is a large gap between the drill rod and the drill sleeve, and the drill rod shakes a lot, which will cause the iron outlet channel to deviate during drilling, burning the blast furnace cooling wall, making the blast furnace iron outlet unable to be blocked, and causing high-temperature molten slag and iron to overflow out of the iron tank, and even burning the iron tank car and the railway. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a drill rod device for an iron hole opening machine, so as to solve the problem that the connecting threads of the drill rod are stuck and cannot be disassembled.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A drill rod device for an iron mouth opening machine comprises a drill rod, a drill bit, a drill sleeve and a square pin. The head of the drill rod is connected to the drill bit via an arc-shaped thread. A drill rod hole is arranged in the drill sleeve. The drill rod is inserted into the drill rod hole in cooperation. A square pin groove 1 is arranged on the drill rod inserted into the drill sleeve. A square pin groove 2 is arranged in the drill sleeve above the square pin groove 1. The square pin is inserted into a groove body formed by the square pin groove 1 and the square pin groove 2. One end of the square pin is clamped with a side wall of the drill sleeve, and the other end of the square pin is limited by a clamping pin.

[0008] The square pin comprises a square pin body and an end stopper of an integrated structure, and a pin hole for inserting a card pin is arranged at the end of the square pin body.

[0009] The bottom surface of the square pin body of the square pin and the bottom surface of the square pin groove are provided with mutually matching inclined surfaces.

[0010] The angle A between the inclined surface and the bottom surface of the square pin body is 30-40°.

[0011] The latch pin comprises a latch pin and a buckle ring. One end of the latch pin is fixedly connected to the buckle ring, and the other end of the latch pin is snap-connected to a bayonet on the buckle ring.

[0012] The drill rod length is 6.2-6.5m.

[0013] Compared with the existing technology, the beneficial effects of the utility model are:

[0014] 1. It can limit both the axial movement and radial runout of the drill pipe.

[0015] 2. The gap between the drill rod and the rotary sleeve is small, the drill rod shakes little, and the drill hole will not deviate. This solves the problem of the tap hole drilling deviation in the prior art, or even burning the cooling wall and causing the blast furnace to stop production.

[0016] 3. Square pin connection is used instead of threaded connection to avoid the occurrence of drill pipe connection thread biting.

[0017] 4. Quick and convenient disassembly and assembly improves maintenance efficiency, shortens maintenance time, increases the reuse rate of drill pipes, reduces the purchase of new drill pipes, and improves economic benefits.

[0018] 5. The square pin matches the square slot formed by the drill sleeve and the drill rod, and the bayonet pin is fixed through the pin hole at the front end of the square pin, thereby realizing the axial and radial bidirectional locking of the drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is an axonometric view of the utility model.

[0021] Figure 3 Schematic diagram of drill pipe.

[0022] Figure 4 Schematic diagram of the drill sleeve.

[0023] Figure 5 A schematic diagram of a bayonet.

[0024] Figure 6 This is a schematic diagram of the square pin body.

[0025] In the figure: drill rod 1, drill bit 2, drill sleeve 3, square pin 4, bayonet pin 5, drill rod hole 6, square pin groove 1 7, square pin groove 2 8, arc thread 9, square pin body 10, end stopper 11, pin hole 12, plug pin 13, retaining ring 14, bayonet 15. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means more than two.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] like Figure 1-Figure 6 A drill rod device for an iron mouth opening machine comprises a drill rod 1, a drill bit 2, a drill sleeve 3 and a square pin 4. The head of the drill rod 1 is connected to the drill bit 2 through an arc-shaped thread 9. A drill rod hole 6 is arranged in the drill sleeve 3. The drill rod 1 is inserted into the drill rod hole 6. A square pin groove 1 7 is arranged on the drill rod 1 inserted into the drill sleeve 3. A square pin groove 2 8 is arranged in the drill sleeve 3 above the square pin groove 1 7. The square pin 4 is inserted into the groove body composed of the square pin groove 1 7 and the square pin groove 2 8. One end of the square pin 4 is clamped with the side wall of the drill sleeve 3, and the other end of the square pin 4 is limited by a clamping pin 5.

[0029] The square pin 4 comprises a square pin body 10 and an end stopper 11 of an integrated structure. The end of the square pin body 10 is provided with a pin hole 12 for inserting the card pin 5 .

[0030] The bottom surface of the square pin body 10 of the square pin 4 and the bottom surface of the square pin groove 7 are provided with mutually matching inclined surfaces.

[0031] The angle A between the inclined surface and the bottom surface of the square pin body 10 is 30-40°.

[0032] The latch pin 5 comprises a latch pin 13 and a buckle ring 14 . One end of the latch pin 13 is fixedly connected to the buckle ring 14 . The latch pin 13 is inserted into the pin hole 12 . The other end of the latch pin 13 is buckled into a bayonet 15 on the buckle ring 14 .

[0033] The drill rod length is 6.2-6.5m.

[0034] In order to make the purpose, technical scheme and technical effect of the utility model clearer, the technical scheme in the embodiment of the utility model is now described clearly and completely. However, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. In combination with the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example 1

[0036] A drill rod device for a tap hole machine comprises a drill rod 1, a drill bit 2, a drill sleeve 3, and a square pin 4. The head of the drill rod 1 is connected to the drill bit 2 through an arc-shaped thread 9. The drill sleeve 3 is provided with a drill rod hole 6. The drill rod 1 is inserted in the drill rod hole 6. The drill rod 1 inserted in the drill sleeve 3 is provided with a square pin groove 1 7. The drill sleeve 3 above the square pin groove 1 7 is provided with a square pin groove 2 8. The square pin 4 is inserted in the groove body composed of the square pin groove 1 7 and the square pin groove 2 8. One end of the square pin 4 is clamped with the side wall of the drill sleeve 3, and the other end of the square pin 4 is limited by the clamping pin 5. The square pin 4 comprises a square pin body 10 and an end stopper 11 of an integrated structure. The end of the square pin body 10 is provided with a pin hole 12 for inserting the clamping pin 5. The bottom surface of the square pin body 10 of the square pin 4 and the bottom surface of the square pin groove 1 7 are provided with mutually matching inclined surfaces. The angle A between the inclined surface and the bottom surface of the square pin body 10 is 40°.

[0037] The latch pin 5 comprises a latch pin 13 and a buckle ring 14 . One end of the latch pin 13 is fixedly connected to the buckle ring 14 . The latch pin 13 is inserted into the pin hole 12 . The other end of the latch pin 13 is buckled into a bayonet 15 on the buckle ring 14 .

[0038] The drill rod is 6.3 m long.

[0039] Example 2

[0040] A drill rod device for a tap hole machine comprises a drill rod 1, a drill bit 2, a drill sleeve 3, and a square pin 4. The head of the drill rod 1 is connected to the drill bit 2 through an arc-shaped thread 9. The drill sleeve 3 is provided with a drill rod hole 6. The drill rod 1 is inserted into the drill rod hole 6. The drill rod 1 inserted into the drill sleeve 3 is provided with a square pin groove 1 7. The drill sleeve 3 above the square pin groove 1 7 is provided with a square pin groove 2 8. The square pin 4 is inserted into the groove body composed of the square pin groove 1 7 and the square pin groove 2 8. One end of the square pin 4 is clamped with the side wall of the drill sleeve 3, and the other end of the square pin 4 is limited by the clamping pin 5. The square pin 4 comprises a square pin body 10 and an end stopper 11 of an integrated structure. The end of the square pin body 10 is provided with a pin hole 12 for inserting the clamping pin 5. The bottom surface of the square pin body 10 of the square pin 4 and the bottom surface of the square pin groove 1 7 are provided with mutually matching inclined surfaces. The angle A between the inclined surface and the bottom surface of the square pin body 10 is 35°.

[0041] The latch pin 5 comprises a latch pin 13 and a buckle ring 14 . One end of the latch pin 13 is fixedly connected to the buckle ring 14 . The latch pin 13 is inserted into the pin hole 12 . The other end of the latch pin 13 is buckled into a bayonet 15 on the buckle ring 14 .

[0042] The drill rod is 6.5 m long.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and basic spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tap hole drilling machine drill rod device, characterized in that: The utility model comprises a drill rod, a drill bit, a drill sleeve and a square pin. The head of the drill rod is connected to the drill bit through an arc-shaped thread. A drill rod hole is arranged in the drill sleeve. The drill rod inserted in the drill rod hole is provided with a square pin groove 1. A square pin groove 2 is arranged in the drill sleeve above the square pin groove 1. The square pin is inserted in the groove body formed by the square pin groove 1 and the square pin groove 2. One end of the square pin is clamped with the side wall of the drill sleeve, and the other end of the square pin is limited by a clamping pin.

2. A tap hole drilling machine drill rod device according to claim 1, characterized in that: The square pin comprises a square pin body and an end stopper of an integrated structure, and a pin hole for inserting a card pin is arranged at the end of the square pin body.

3. The drill rod device for a tap hole opening machine according to claim 1, characterized in that: The bottom surface of the square pin body of the square pin and the bottom surface of the square pin groove are provided with mutually matching inclined surfaces.

4. The drill rod device for a tap hole opening machine according to claim 3, characterized in that: The angle A between the inclined surface and the bottom surface of the square pin body is 30-40°.

5. The drill rod device for a tap hole opening machine according to claim 1, characterized in that: The latch pin comprises a latch pin and a buckle ring. One end of the latch pin is fixedly connected to the buckle ring, and the other end of the latch pin is snap-connected to a bayonet on the buckle ring.

6. The drill rod device for a tap hole opening machine according to claim 1, characterized in that: The drill rod length is 6.2-6.5m.

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