Drill bit device with drill rod convenient to replace

Abstract

The utility model relates to the technical field of drill bit devices, in particular to a drill bit device with a drill rod convenient to replace, which comprises a drill bit main body, a vertically arranged convex column is fixedly mounted at the top of the drill bit main body, the drill rod is arranged above the drill bit main body, and a rectangular insertion block is fixedly mounted at the bottom end of the drill rod. Rectangular insertion holes are formed in the protruding column and the top rod body of the drill rod, the rectangular insertion block is matched with the rectangular insertion hole in the lower portion in an inserted mode, grooves are formed in the left side face and the right side face of the protruding column and the top rod body of the drill rod, an upper through hole and a lower through hole which are communicated with the outside are formed in the grooves and the rectangular insertion block respectively, and fastening bolts are matched in the through holes in an inserted mode. A nut is in threaded connection with a rod body at the end of the fastening bolt, a left guide column and a right guide column which are symmetrical with each other are fixedly installed on the front side face of the nut, elastic washers are connected to the two guide columns in a sliding mode, and limiting discs are fixedly installed at the ends of the guide columns. The device is convenient to assemble, disassemble, replace and use.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bit devices, and more specifically, to a drill bit device facilitating the replacement of drill pipes. Background Technique

[0002] Drill pipes and drill bits are key components of drilling equipment. The drill pipe plays a role in supporting the drill bit, and the drill bit is used for drilling operations. There are two types of drill pipes on the market, namely hollow and solid. The inside of the hollow drill pipe is used for the normal discharge operations of mud, soil, etc. The solid drill pipe mainly plays a role in connecting the drill bit, and the outer diameter of this type of solid drill pipe is generally smaller than that of the drill bit, so as to achieve the discharge operation of soil from the periphery of the drill bit.

[0003] When it comes to the connection operation between the solid drill pipe and the drill bit, the connection between the drill pipe and the drill bit usually adopts a threaded connection method. Although this connection method has the effect of being convenient for loading and unloading, the threaded connection must ensure that the rotation directions of the drill pipe and the drill bit are the same as the thread connection helix direction to work stably. Once rotated in the reverse direction, it is easy to cause the drill bit to fall off the drill pipe, which is not conducive to ensuring the overall structural stability while being convenient for disassembly and replacement, and affects the use effect. In view of this, we propose a drill bit device facilitating the replacement of drill pipes. Content of the Utility Model

[0004] The purpose of the utility model is to provide a drill bit device facilitating the replacement of drill pipes to solve the defects mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] A drill bit device facilitating the replacement of drill pipes includes a drill bit body. A vertically arranged convex column is fixedly installed at the top of the drill bit body. A drill pipe is arranged above the drill bit body. A rectangular insertion block is fixedly installed at the bottom end of the drill pipe. Rectangular insertion holes are arranged in both the convex column and the top rod body of the drill pipe. The rectangular insertion block is in plug-in fit with the lower rectangular insertion hole. Grooves are arranged on the left and right side surfaces of the top rod bodies of the convex column and the drill pipe. Two through holes communicating with the outside are arranged in both the groove and the rectangular insertion block. A fastening bolt is inserted and fitted in the through hole. A nut is threadedly connected to the end rod body of the fastening bolt. Two symmetrically arranged guide columns are fixedly installed on the front side surface of the nut. An elastic washer is slidably connected to the two guide columns. A limiting disk is fixedly installed at the end of the guide column.

[0007] Preferably, a convex block is fixedly installed on the bottom column body of the convex column, and the cross section of the convex block is hexagonal.

[0008] Preferably, the cross-sections of the rectangular insert block and the rectangular jack are both rectangular, and the size of the rectangular insert block is adapted to the size of the rectangular jack.

[0009] Preferably, the rear side wall of the groove is a vertical plane, a head is fixedly installed at the end of the fastening bolt, and both the head and the elastic washer abut against the vertical plane on the rear side of the groove.

[0010] Preferably, the horizontal vertical distance between the upper and lower through holes is greater than 5 cm, and the size of the fastening bolt is adapted to the size of the through hole.

[0011] Preferably, two symmetrically arranged guiding holes are provided on the elastic washer, and the guide post passes through the guiding holes.

[0012] Preferably, the outer diameter of the limiting disc is greater than the aperture of the guiding hole, and the size of the guide post is adapted to the size of the guiding hole.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the insertion fit between the rectangular insert block and the rectangular jack provided in the present utility model, it is convenient to perform the insertion positioning operation. In addition, through the provided fastening bolt, nut and elastic washer, it is convenient to fix between the rectangular insert block and the convex column, and the fastening bolt is not easy to loosen after being tightened, achieving the effects of convenient loading and unloading, replacement and firm and stable structure.

[0015] 2. Through the provided guide post, limiting disc and guiding hole in the present utility model, the elastic washer is limited on the guide post, so that the situation of loss of the elastic washer is not likely to occur, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the exploded structural schematic diagram of the present utility model;

[0018] Figure 3 is the present utility model Figure 2 the enlarged view at A in;

[0019] Figure 4 is the partial structural schematic diagram of the present utility model;

[0020] The meanings of the various reference numerals in the figure are as follows:

[0021] 1. Drill bit body; 10. Convex column; 11. Convex block;

[0022] 2. Drill pipe; 20. Rectangular insert block;

[0023] 3. Rectangular jack; 30. Groove; 31. Through hole;

[0024] 4. Fastening bolt; 40. End; 41. Nut; 42. Guide post; 421. Limit disk; 43. Elastic washer; 431. Guide hole. Specific implementation manner

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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.

[0026] Please refer to Figures 1-4 , the present invention provides a technical solution: a drill bit device for facilitating the replacement of a drill pipe, including a drill bit body 1. A convex column 10 arranged vertically is fixedly installed at the top of the drill bit body 1. A drill pipe 2 is arranged above the drill bit body 1. A rectangular insertion block 20 is fixedly installed at the bottom end of the drill pipe 2. Rectangular jacks 3 are arranged in the top rod bodies of the convex column 10 and the drill pipe 2. The rectangular insertion block 20 is in plug-in fit with the lower rectangular jack 3 to realize the plug-in assembly operation;

[0027] Specifically, grooves 30 are arranged on the left and right side surfaces of the top rod bodies of the convex column 10 and the drill pipe 2. Two upper and lower through holes 31 communicating with the outside are arranged in the grooves 30 and the rectangular insertion block 20. Fastening bolts 4 are inserted and fitted in the through holes 31. The horizontal vertical distance between the two upper and lower through holes 31 is greater than 5 cm. The size of the fastening bolts 4 is adapted to the size of the through holes 31, and the two upper and lower through holes 31 are centrosymmetric. When there is a loose gap between one of the fastening bolts 4 and the through hole 31, the other fastening bolt 4 can be inserted into the through hole 31 for stable support operation;

[0028] Specifically, a nut 41 is threadedly connected to the end rod body of the fastening bolt 4. Two symmetrically arranged guide posts 42 are fixedly installed on the front side surface of the nut 41. An elastic washer 43 is slidably connected to the two guide posts 42. A limit disk 421 is fixedly installed at the end of the guide post 42 to facilitate the limit fixing operation by using the nut 41 and the elastic washer 43.

[0029] In this embodiment, a convex block 11 is fixedly installed on the bottom column body of the convex column 10. The cross section of the convex block 11 is hexagonal, so that it is more stable to clamp the drill bit body 1 from the convex block 11 part with the cooperation of external tools.

[0030] Specifically, the cross-sections of the rectangular insert block 20 and the rectangular jack 3 are both rectangular. The size of the rectangular insert block 20 is adapted to the size of the rectangular jack 3 for stable plugging and assembling operations.

[0031] Further, the rear side wall of the groove 30 is a vertical plane. The end of the fastening bolt 4 is fixedly installed with a head 40. Both the head 40 and the elastic washer 43 abut against the rear vertical plane of the groove 30, making it more stable when the head 40 and the elastic washer 43 are tightened.

[0032] In addition, two symmetrically arranged guiding holes 431 are provided on the elastic washer 43. The guide post 42 passes through the guiding holes 431. The outer diameter of the limit disk 421 is larger than the aperture of the guiding holes 431. The size of the guide post 42 is adapted to the size of the guiding holes 431, enabling the elastic washer 43 to slide on the guide post 42 without slipping off the guide post 42, thus avoiding the situation of the elastic washer 43 being lost alone.

[0033] When the drill bit device for facilitating the replacement of the drill pipe of the present utility model is in use, the rectangular insert block 20 is inserted into the rectangular jack 3. Then, the fastening bolt 4 is passed through the through hole 31. Next, the elastic washer 43 and the nut 41 are sleeved on the end of the fastening bolt 4. Finally, the fastening bolt 4 is tightened to ensure that both the head 40 and the elastic washer 43 abut against the rear vertical planes of the two side grooves 30, completing the fixing operation. When replacing, the fastening bolt 4 is unscrewed and then disassembled and replaced.

[0034] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and do not limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A drill bit device facilitating the replacement of drill pipes, comprising a drill bit body (1), characterized in that: A convex column (10) vertically arranged is fixedly installed at the top of the drill bit body (1). A drill pipe (2) is arranged above the drill bit body (1). A rectangular insert block (20) is fixedly installed at the bottom end of the drill pipe (2). Rectangular jacks (3) are arranged in the top rod bodies of the convex column (10) and the drill pipe (2). The rectangular insert block (20) is in plug-in fit with the lower rectangular jack (3). Grooves (30) are arranged on the left and right side surfaces of the top rod bodies of the convex column (10) and the drill pipe (2). Two upper and lower through holes (31) communicating with the outside are arranged in the grooves (30) and the rectangular insert block (20). A fastening bolt (4) is plugged in the through hole (31). A nut (41) is threadedly connected to the end rod body of the fastening bolt (4). Two symmetrically arranged guide posts (42) are fixedly installed on the front side surface of the nut (41). An elastic washer (43) is slidably connected to the two guide posts (42). A limit disk (421) is fixedly installed at the end of the guide post (42).

2. The drill bit device for facilitating the replacement of drill pipes according to claim 1, characterized in that: A convex block (11) is fixedly installed on the bottom column body of the convex column (10). The cross section of the convex block (11) is hexagonal.

3. The drill bit device for facilitating the replacement of drill pipes according to claim 1, wherein: The cross sections of the rectangular insert block (20) and the rectangular jack (3) are both rectangular. The size of the rectangular insert block (20) is adapted to the size of the rectangular jack (3).

4. The drill bit device for facilitating the replacement of drill pipes according to claim 1, characterized in that: The rear side wall of the groove (30) is a vertical plane. A head (40) is fixedly installed at the end of the fastening bolt (4). The head (40) and the elastic washer (43) both abut against the rear vertical plane of the groove (30).

5. The drill bit device for facilitating the replacement of drill pipes according to claim 1, characterized in that: The horizontal vertical distance between the upper and lower through holes (31) is greater than 5 cm. The size of the fastening bolt (4) is adapted to the size of the through hole (31).

6. The drill bit device for facilitating the replacement of drill pipes according to claim 1, wherein: Two symmetrically arranged guide holes (431) are arranged on the elastic washer (43). The guide post (42) passes through the guide hole (431).

7. The drill bit device for facilitating the replacement of drill pipes according to claim 6, characterized in that: The outer diameter of the limit disk (421) is greater than the aperture of the guide hole (431). The size of the guide post (42) is adapted to the size of the guide hole (431).

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