Drill rod replacing device for down-the-hole drill

Abstract

The drill rod replacing device for the down-the-hole drill comprises a drill rod, a base rod and a guide pipe, one end of the guide pipe penetrates through the drill rod from the base rod and extends to the outer portion of the drill rod, a screw opening is fixedly connected to one side of the drill rod, a screw ring matched with the screw opening is arranged in the base rod, and the base rod is fixedly connected with the guide pipe. An operation opening for detecting a guide pipe is formed in the screw opening, and a rod replacing piece for supporting equipment is arranged between the drill rod and the base rod. One end of the guide pipe penetrates through the drill rod from the base rod and extends out of the drill rod, one side of the drill rod is fixedly connected with the screw opening, the screw ring matched with the screw opening is formed in the base rod, and the operation opening for guide pipe detection is formed in the screw opening. Therefore, when the guide pipe is overhauled, the base rod and the drill rod can be slightly opened through screwed connection of the screw ring and the screw opening, and the screw opening is convenient to pull and overhaul through the operation opening.

Description

Technical Field

[0001] The utility model relates to the technical field of rod changing of down-the-hole drills, in particular to a rod changing device for down-the-hole drills. Background Technique

[0002] A down-the-hole drill is an engineering mechanical equipment used for excavating holes in soil and rock. It is usually used in fields such as construction projects, geological exploration, environmental protection, and mineral mining. The working principle of a down-the-hole drill is to use a rotating drill bit or excavation tool to excavate holes on the ground or underground for subsequent foundation support, soil sampling, or pipeline installation operations.

[0003] The patent with the publication number CN210714522U discloses a structure of an auxiliary rod changing and rod storage library for a down-the-hole drill. This patent specifically discloses a technical solution of "a structure of an auxiliary rod changing and rod storage library for a down-the-hole drill, including a rotating shaft, an upper rod protection cover, a lower rod protection cover, a rod storage turntable, and a turntable bottom plate", achieving the technical effect of "making the down-the-hole drill able to carry multiple drill rods and facilitating the access to drill holes through this structure of the auxiliary rod changing and rod storage library for a down-the-hole drill, making the operation simple, the performance reliable, reducing the operation time, and improving the work efficiency".

[0004] However, in the actual use process of this patent, there is no device for repairing and replacing the internal conduit of the down-the-hole drill, resulting in the problem that the conduit is damaged during rod changing. Content of the Utility Model

[0005] The purpose of the utility model is to provide a rod changing device for a down-the-hole drill to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A rod changing device for a down-the-hole drill, including a drill rod, a base rod, and a conduit. One end of the conduit passes through the drill rod from the base rod and extends to the outside of the drill rod. One side of the drill rod is fixedly connected with a screw port, and a screw ring adapted to the screw port is provided inside the base rod. An operation port for conduit detection is provided inside the screw port. A rod changing member for supporting the equipment is provided between the drill rod and the base rod.

[0007] As a further scheme of the utility model: A rod changing device for a down-the-hole drill, both ends of the rod changing member are threadedly connected with screw rods, and the ends of the screw rods away from the rod changing member are respectively movably connected with a gasket ring or a screw seat.

[0008] As a further scheme of the utility model: A rod changing device for a down-the-hole drill, a slurry port and a gas port are fixedly connected to the end of the conduit extending to the drill rod.

[0009] As a further solution of the utility model: A drill pipe changing device for a down-the-hole drill. One side of the drill pipe is fixedly connected with a screw base, and one end of the screw rod far away from the pipe changing member is in threaded connection with the screw base.

[0010] As a further solution of the utility model: A drill pipe changing device for a down-the-hole drill. A gasket ring is fixedly connected to the outer side of the base rod. One end of the screw rod far away from the pipe changing member is fixedly connected with a suction cup, and the suction cup is movably connected with the gasket ring.

[0011] As a further solution of the utility model: A drill pipe changing device for a down-the-hole drill. Anti-slip threads are arranged on the outer side of the screw rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Since one end of the conduit passes through the drill pipe from the base rod and extends to the outside of the drill pipe, a screw port is fixedly connected to one side of the drill pipe, a screw ring adapted to the screw port is arranged inside the base rod, and an operation port for detecting the conduit is arranged inside the screw port. Therefore, when the conduit is overhauled, the base rod and the drill pipe can be slightly opened by the threaded connection between the screw ring and the screw port, and the pulling and overhaul of the screw port are facilitated through the operation port.

[0014] 2. By arranging a pipe changing member for supporting the equipment between the drill pipe and the base rod, the support of the drill pipe and the base rod can be assisted during the overhaul of the drill pipe, the base rod and the conduit, avoiding the problem of damage caused by excessive thread load and improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 One of the schematic diagrams of the overall structure of a drill pipe changing device for a down-the-hole drill of the utility model;

[0016] Figure 2 Another schematic diagram of the overall structure of a drill pipe changing device for a down-the-hole drill of the utility model;

[0017] Figure 3 Schematic diagram of the structure of the pipe changing member of a drill pipe changing device for a down-the-hole drill of the utility model;

[0018] Figure 4 Schematic diagram of the structure of the conduit of a drill pipe changing device for a down-the-hole drill of the utility model;

[0019] In the figure: 1. Drill pipe; 2. Base rod; 21. Screw ring; 3. Conduit; 4. Screw port; 41. Operation port; 5. Pipe changing member; 51. Screw rod; 52. Suction cup; 6. Screw base; 7. Gasket ring; 8. Slurry port; 9. Air port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The embodiments of the present invention will be described below according to its overall structure.

[0022] In an embodiment of the present invention, a drill pipe changing device for a down-the-hole drill includes a drill pipe 1, a base pipe 2, and a conduit 3. One end of the conduit 3 passes through the drill pipe 1 from the base pipe 2 and extends to the outside of the drill pipe 1. A screw port 4 is fixedly connected to one side of the drill pipe 1. A screw ring 21 adapted to the screw port 4 is provided inside the base pipe 2. An operation port 41 for detecting the conduit 3 is provided inside the screw port 4. A changing rod member 5 for supporting the device is provided between the drill pipe 1 and the base pipe 2.

[0023] Since one end of the conduit 3 passes through the drill pipe 1 from the base pipe 2 and extends to the outside of the drill pipe 1, a screw port 4 is fixedly connected to one side of the drill pipe 1, a screw ring 21 adapted to the screw port 4 is provided inside the base pipe 2, and an operation port 41 for detecting the conduit 3 is provided inside the screw port 4. Therefore, when the conduit 3 is overhauled, the base pipe 2 and the drill pipe 1 can be slightly opened by the screwing connection between the screw ring 21 and the screw port 4, and the pulling and overhaul of the screw port 4 are facilitated through the operation port 41.

[0024] Moreover, by arranging a rod-changing member 5 for supporting the equipment between the drill pipe 1 and the base rod 2, it is possible to assist in supporting the drill pipe 1 and the base rod 2 during the maintenance of the drill pipe 1, the base rod 2, and the conduit 3, avoid the problem of damage caused by excessive thread load, and extend the service life of the equipment.

[0025] Other embodiments of the present invention: A drill pipe rod-changing device for a down-the-hole drill. Both ends of the rod-changing member 5 are threadedly connected with screw rods 51, and the ends of the screw rods 51 away from the rod-changing member 5 are respectively movably connected with a gasket ring 7 or a screw base 6.

[0026] Other embodiments of the present invention: A drill pipe rod-changing device for a down-the-hole drill. One end of the conduit 3 extending to the drill pipe 1 is fixedly connected with a slurry port 8 and an air port 9.

[0027] Other embodiments of the present invention: A drill pipe rod-changing device for a down-the-hole drill. A screw base 6 is fixedly connected to one side of the drill pipe 1, and the end of the screw rod 51 away from the rod-changing member 5 is threadedly connected with the screw base 6.

[0028] Other embodiments of the present invention: A drill pipe rod-changing device for a down-the-hole drill. A gasket ring 7 is fixedly connected to the outside of the base rod 2. A suction cup 52 is fixedly connected to the end of the screw rod 51 away from the rod-changing member 5, and the suction cup 52 is movably connected with the gasket ring 7.

[0029] Other embodiments of the present invention: A drill pipe rod-changing device for a down-the-hole drill. Anti-slip threads are provided on the outside of the screw rod 51.

[0030] The working principle of the present invention is as follows: Since one end of the conduit 3 passes through the drill pipe 1 from the base rod 2 and extends to the outside of the drill pipe 1, a screw port 4 is fixedly connected to one side of the drill pipe 1, a screw ring 21 adapted to the screw port 4 is provided inside the base rod 2, and an operation port 41 for detecting the conduit 3 is provided inside the screw port 4. Therefore, when the conduit 3 is being maintained, the base rod 2 and the drill pipe 1 can be slightly opened by the threaded connection between the screw ring 21 and the screw port 4, and the pulling and maintenance of the screw port 4 are facilitated through the operation port 41.

[0031] By arranging a rod-changing member 5 for supporting the equipment between the drill pipe 1 and the base rod 2, it is possible to assist in supporting the drill pipe 1 and the base rod 2 during the maintenance of the drill pipe 1, the base rod 2, and the conduit 3, avoid the problem of damage caused by excessive thread load, and extend the service life of the equipment.

[0032] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A drill rod changing device for a down-the-hole drill, characterized in that: The invention comprises a drill rod (1), a base rod (2) and a guide tube (3); one end of the guide tube (3) passes through the drill rod (1) from the base rod (2) and extends to the outside of the drill rod (1); one side of the drill rod (1) is fixedly connected with a screw hole (4); a screw ring (21) matching the screw hole (4) is provided inside the base rod (2); an operating port (41) for detecting the guide tube (3) is provided inside the screw hole (4); and a rod changing member (5) for supporting equipment is provided between the drill rod (1) and the base rod (2).

2. A drill rod changing device for a down-the-hole drill according to claim 1, characterized in that: Both ends of the rod-changing member (5) are threadedly connected with screw rods (51), and one end of the screw rod (51) away from the rod-changing member (5) is movably connected to a gasket (7) or a screw seat (6).

3. A drill rod changing device for a down-the-hole drill according to claim 2, characterized in that: One end of the guide tube (3) extending to the drill rod (1) is fixedly connected with a slurry port (8) and a gas port (9).

4. A drill rod changing device for a down-the-hole drill according to claim 3, characterized in that: A screw seat (6) is fixedly connected to one side of the drill rod (1), and one end of the screw rod (51) away from the rod changing member (5) is screwedly connected to the screw seat (6).

5. A drill rod changing device for a down-the-hole drill according to claim 4, characterized in that: A gasket (7) is fixedly connected to the outer side of the base rod (2), and a suction cup (52) is fixedly connected to one end of the screw rod (51) away from the rod-changing member (5), and the suction cup (52) is movably connected to the gasket (7).

6. A drill rod changing device for a down-the-hole drill according to claim 5, characterized in that: The outer side of the screw rod (51) is provided with anti-slip grooves.

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