CN204754796U - Roadway support is high -speed joint formula drilling rod for anchor - Google Patents

Abstract

A quick-connect drill pipe for roadway support and anchoring, comprising a quick-connect drill pipe (4) and a U-shaped fixing pin (11), the main body of the drill pipe (4) is a hexagonal hollow long rod, and the top of the rod body is a male joint (5 ), used to connect the drill bit, the lower end of the drill pipe is a female joint (1), and the female joint (1) is directly connected with the drilling machine. Insert the male joint (5) of the lower drill pipe into the hexagonal hole (8) of the female joint (1) of the upper drill pipe, and the hexagonal hole (8) of the female joint (1) is aligned with the hexagonal rod of the male joint (5) Cooperate to transmit circular motion, insert the U-shaped fixed pin (11) into the rectangular through hole (2) of the female joint (1), which can restrict the axial movement of the drill pipe, thereby realizing the quick connection of the drill pipe. The utility model has the advantages of simple structure and convenient assembly and disassembly, which can effectively increase the connection and disassembly speed of the drill pipe, improve the production efficiency and prolong the service life of the drill pipe.

Description

A quick-connect drill pipe for roadway support and anchoring

technical field

The utility model relates to a drill pipe for supporting and anchoring a coal mine roadway, in particular to a quick-connecting drill pipe for supporting and anchoring a coal mine roadway.

Background technique

In the production process of coal mines, the underground roadway must be supported. In my country, bolts or anchor cables are generally used to reinforce and support the roadway. This requires drilling into the surrounding rock of the roadway. One end of the drill pipe is connected to the drill bit, and the other One end is attached to the drill. Because the required drilling depth is different, the length of the drill rods is also different. When the length of one drill rod is not enough, it is necessary to connect two or more drill rods. It is disassembled after the drilling is completed, and the drill pipe can be extended for subsequent drilling.

At present, the connection method of drill pipes in my country's coal mines is mainly through threaded connections, that is, the upper and lower drill pipes are connected through the threaded engagement of the head and tail or through additional threaded pipes. But the problem that exists is, when drilling rig drills forward, relatively large torque is transmitted to drill pipe, tightly bites between each drill pipe and connecting sleeve, causes very difficult when dismounting threaded connecting sleeve. For this reason, it is often necessary to knock the drill pipe hard to loosen the thread engagement between the drill pipe and the connecting sleeve, but this is time-consuming and labor-intensive and can easily damage the drill pipe, resulting in economic losses.

Contents of the invention

The purpose of this utility model is to solve the shortcomings of the above-mentioned technologies, and provide a quick-connect drill pipe for roadway support and anchoring, which is easy to operate and convenient to assemble and disassemble.

The utility model comprises: a fast-connecting drill pipe and a U-shaped fixing pin.

The utility model is accomplished in the following way: a quick-connect drill pipe for roadway support and anchoring is designed, the main body of the drill pipe is a hexagonal hollow long rod, the top of the main body of the drill pipe is designed as a male joint, and the end of the male joint is a section of hollow external thread The pipe is used to connect the drill bit, and the top of the threaded pipe is a conical boss. Connected to the threaded pipe is a hexagonal hollow rod whose circumcircle diameter is smaller than the main body of the drill pipe. There is an annular groove on a certain position of the hexagonal rod. The lower end of the drill pipe is a female joint, and the female joint is a hexagonal rod with a circumscribed circle diameter larger than the main body , the hexagonal rod is directly connected with the drilling rig. There is a hexagonal hole in the hexagonal rod, and the hexagonal hole is completely consistent with the hexagonal hollow rod of the male joint. A pair of rectangular grooves are symmetrically formed on the hexagonal rod of the female joint, and rectangular through holes are respectively formed at both ends of the rectangular grooves. There is a central through hole inside the drill pipe for ventilation or water passage.

Design a U-shaped fixed pin, the two legs of the fixed pin can just be inserted into the inside of the rectangular through hole, the length of the two legs of the rectangular pin is the same as the length of the rectangular through hole, the width of the upper part of the legs is consistent with the rectangular through hole, and the lower part is smaller than that Width, fixed pin has a pair of symmetrical inner claws at the bottom of both legs.

When connecting drill pipes, insert the male joint of the lower drill pipe into the hexagonal hole in the female joint of the upper drill pipe. The hexagonal hole of the female joint matches the hexagonal rod of the male joint to realize the transmission of circular motion between the drill pipes. , using internal and external hexagonal connections to increase the torque transmitted by the drill pipe. Insert the U-shaped fixing pin into the rectangular through hole of the hexagonal rod body at the lower part of the drill pipe. After fully inserted, the U-shaped fixing pin can just match the rectangular groove. The two legs of the U-shaped fixed pin are stuck on the annular groove of the male joint of the lower drill pipe, and the inner claws are caught on the bottom plane of the rectangular groove of the upper drill pipe, so that the axial movement of the drill pipe is restricted.

The utility model has the advantages of simple structure, convenient assembly and disassembly, and compact structure, which can effectively increase the connection and disassembly speed of the drill pipe, improve the production efficiency, and prolong the service life of the drill pipe.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the utility model.

Fig. 2 is a view along the direction A of Fig. 1 .

Fig. 3 is a schematic diagram of the internal structure of the drill pipe box joint in Fig. 1 .

Figure 4 is a schematic diagram of the internal structure of the male and female joints and the U-shaped fixed pin when the upper and lower drill pipes are connected.

Figure 5 is a schematic diagram of the internal structure of the male and female joints and the U-shaped fixing pins in the A direction when the upper and lower drill pipes are connected.

Fig. 6 is a schematic structural diagram of a U-shaped fixing pin.

In the figure, 1—female joint, 2—rectangular through hole, 3—rectangular groove, 4—drill pipe body, 5—male joint, 6—annular groove, 7—threaded pipe, 8—hexagonal hole of female joint, 9—the round hole of the female joint, 10—the center through hole of the drill pipe, 11—the U-shaped fixing pin, 12—the inner claw of the U-shaped pin fixing pin, A—the visual direction symbol.

Detailed ways

The specific embodiment of the utility model is illustrated in conjunction with the accompanying drawings:

Referring to Fig. 1, Fig. 2, Fig. 3, the utility model adopts the hexagonal hollow high-quality steel pipe to be made into the drill pipe main body 4, and the male joint 5 and the female joint 1 of quick connection type are respectively processed into at the two ends of the drill pipe. The end of the male joint 5 is a hollow external threaded pipe 7, which can be connected to a drill bit, and the top of the threaded pipe 7 is designed as a conical boss. The lower part of the threaded pipe 7 is a hexagonal hollow rod whose circumcircle diameter is smaller than the drill pipe main body 4, and the hexagonal rod has an annular groove 6 at a certain position. The female joint 1 is a hexagonal rod whose circumscribed circle diameter is larger than the drill pipe main body 4. There is a hexagonal hole 8 inside the hexagonal rod. The circular hole 9 coincides with the threaded pipe 7 of the top male joint 5 of the drill pipe. The hexagonal bar of the female joint 1 is provided with a pair of symmetrical rectangular grooves 3 , and the two ends of the rectangular grooves 3 are respectively provided with rectangular through holes 2 . A central through hole 10 is opened in the drill pipe, and water or gas can be passed along the central hole during drilling for slag removal or dust removal.

Referring to Fig. 4, the hexagonal rod on the male joint 5 of the drill pipe is fully matched with the hexagonal hole 8 on the female joint 1, and the threaded pipe 7 on the male joint 5 is fully matched with the circular hole 9 on the female joint 1. When the drill pipes are connected, the male joint 5 of the lower drill pipe is fully inserted into the female joint 1 of the upper drill pipe. At this time, the rectangular through hole 2 on the upper drill pipe female joint 1 and the lower drill pipe male joint The annular groove 6 on the 5 is completely overlapped, and the U-shaped fixed pin 11 is completely inserted into the rectangular through hole 2 of the female joint 1 of the upper drill pipe. Consistent, the two legs of the U-shaped fixed pin 11 are stuck on the annular groove 6 of the lower drill pipe male joint 5, and the inner claws 12 are caught on the bottom plane of the upper drill pipe rectangular groove 6, thus realizing the axial movement of the drill pipe. constraints. The hexagonal hole 8 of the female joint 1 cooperates with the hexagonal rod of the male joint 5, thereby realizing the transmission of the circular motion between the drill pipes.

Referring to Fig. 5 and Fig. 6, the size of the upper part of the U-shaped fixing pin 11 is completely matched with the rectangular through hole 2, and the width of the lower half is smaller than the width of the through hole (2), and its purpose is to prevent the U-shaped fixing pin from 11 loses stability after being inserted into the through hole 2, which affects the connection effect of the drill pipe. The inner claw (12) at the lower part of the U-shaped fixing pin (11) is wider than the width of the rectangular through hole (2). When inserted into the rectangular through hole 2, the legs of the U-shaped fixing pin 11 will undergo slight elastic deformation to adapt to the rectangular through hole. 2. When the U-shaped fixing pin 11 reaches the other end of the rectangular through hole 2, the deformation of the two legs recovers, and the inner claw 12 catches on the bottom plane of the rectangular groove 3. After the U-shaped fixed pin 11 is inserted into the female joint 1, it can just fit into the rectangular groove 3, and can complement the rectangular groove 3 to form a complete planar structure, so that there will be no U-shaped fixed pin 11 exposed on the female joint 1. Outside, it affects the hole-forming effect.

The utility model has the advantages of convenient operation, simple structure and low operating cost, reduces the damage of the drill pipe caused in the dismantling process, can effectively improve the production efficiency of the coal mine, and has good economic and social benefits and popularization and application value.

Claims (4)

1. A quick-connect drill pipe for roadway support and anchoring, comprising a quick-connect drill pipe main body (4) and a U-shaped fixing pin (11), characterized in that the drill pipe main body (4) is hexagonally hollow The long rod is designed as a male joint (5) on the top of the drill pipe main body (4), and the end of the male joint (5) is a hollow external threaded pipe (7). The hexagonal hollow rod of the rod main body (4), the lower end of the drill pipe is a female joint (1), and the female joint (1) is a hexagonal rod with a circumcircle diameter larger than that of the drill pipe main body (4), and the hexagonal rod is directly connected with the drilling machine. 2. A quick-connect drill pipe for roadway support and anchoring according to claim 1, characterized in that: the main body of the drill pipe (4) is a hexagonal hollow long rod, and the end of the male joint (5) is a section The hollow external threaded pipe (7) is used to connect the drill bit, and the top of the threaded pipe (7) is a conical boss. 3. A quick-connect drill pipe for roadway support and anchoring according to claim 1, characterized in that: the hexagonal rod of the female joint (1) has a hexagonal hole (8), and the hexagonal hole (8) is connected to the male The hexagonal hollow rod of the joint (5) is completely matched, the hexagonal hole (8) is connected with a circular hole (9), and the circular hole (9) is matched with the threaded pipe (7) of the male joint (5) at the top of the drill pipe, A pair of rectangular grooves (3) are symmetrically formed on the hexagonal rod of the female joint (1), and rectangular through holes (2) are respectively formed at both ends of the rectangular grooves (3). 4. A quick-connect drill pipe for roadway support and anchoring according to claim 1, characterized in that: the size of the upper half of the legs of the U-shaped fixing pin (11) completely matches the rectangular through hole (2), The lower part is smaller than the width of the through hole (2) in width, and the width of the inner claw (12) at the bottom of the U-shaped fixed pin (11) is greater than the width of the rectangular through hole (2), and the U-shaped fixed pin (11) is inserted into the female After the joint (1), it can just fit into the rectangular groove (3), and can complement the rectangular groove (3) to form a complete planar structure.