Adjustable drill bit of well drilling machine

Abstract

The utility model relates to the technical field of drill bits of well drilling machines, and discloses an adjustable drill bit of a well drilling machine, which comprises a drill rod and an external frame, the external frame is provided with a screw groove, the inside of the screw groove is in threaded connection with a thread adjusting rod, and a second connecting ring block is attached to the surface of the thread adjusting rod. The outer arc face of the second connecting ring block is fixedly connected with a connecting plate, and the side face of the connecting plate is fixedly connected with an L-shaped rod. According to the adjustable well drilling machine drill bit, L-shaped rods on the side faces of the connecting plates control C-shaped mounting clamping blocks to move, clamping grooves formed in the four adjusted C-shaped mounting clamping blocks and a drill rod are used for clamping and positioning, the drill rod is installed at the center position, and then a first screw penetrates through the C-shaped mounting clamping blocks and the drill rod to be installed in a threaded mode; in the whole operation process, the drill rod and the drill bit body which need to be replaced can be rapidly subjected to center positioning, the installation accuracy is ensured, time consumed by repeated correction is further avoided, the whole operation steps are simple, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits for well drilling machines, in particular to an adjustable drill bit for a well drilling machine. Background Technique

[0002] Well drilling machines are mainly used for developing underground water resources, including drilling work for domestic water, agricultural water, industrial water, etc. At the same time, they are also applicable to hydrogeological exploration, construction projects, bridge foundation drilling, etc. Well drilling machines rely on drill bits for drilling operations.

[0003] However, the following problems still exist in the actual operation process: During the drilling operation of the well drilling machine, it is necessary to adapt to the size of the dewatering wells required for the well drilling operation according to the on-site construction environment. Different sizes of dewatering wells require different models of drill bits for the well drilling machine to achieve the adaptation effect. During the replacement process, the entire drill bit needs to be disassembled and replaced. The replacement process is cumbersome and requires repeated positioning of the center of the drill bit to ensure accurate installation. Therefore, the utility model provides an adjustable drill bit for a well drilling machine. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides an adjustable drill bit for a well drilling machine, which has the advantages of four-corner positioning type quick installation and replaceable drill bits, and solves the problems raised in the background technique.

[0005] The utility model provides the following technical solution: An adjustable drill bit for a well drilling machine includes a drill pipe and an external frame. The external frame is provided with a threaded groove, and a threaded adjusting rod is threadedly connected inside the threaded groove. The surface of the threaded adjusting rod is attached to a second connecting ring block. The outer arc surface of the second connecting ring block is fixedly connected with a connecting plate. The side of the connecting plate is fixedly connected with an L-shaped rod. The bottom of the L-shaped rod is fixedly connected with a C-shaped installation clamp block. A clamping groove is formed on the side of the C-shaped installation clamp block, and the drill pipe is attached inside the clamping groove. Installation grooves are formed in the C-shaped installation clamp block and the clamping groove, and a first screw is threadedly connected inside the installation grooves.

[0006] Preferably, two adapter blocks are fixedly installed on the surface of the drill pipe. Installation plates are attached to the sides of both adapter blocks. A drill bit body is fixedly installed at the bottom of the installation plate. Screw holes are formed in the adapter blocks and the installation plates, and a second screw is threadedly connected inside the screw holes.

[0007] Preferably, an extension plate is fixedly connected to the top of the external frame. A scale column is attached inside the extension plate. A connecting plate is fixedly connected to the side of the scale column.

[0008] Preferably, a first connecting ring block is fixedly installed on the surface of the threaded adjusting rod. The second connecting ring block is attached to the side of the first connecting ring block.

[0009] Preferably, a third connecting ring block is fixedly installed on the surface of the threaded adjusting rod, and a second connecting ring block is attached to the side surface of the third connecting ring block.

[0010] Preferably, diversion grooves are respectively formed on both sides of the drill bit body.

[0011] Preferably, a plurality of scale grooves are formed on the surface of the scale column, and an anti - detachment gasket is fixedly installed on the side surface of the scale column.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. For the adjustable drilling rig drill bit, the threaded adjusting rod rotates in the internal thread of the external frame. During the rotation, the first connecting ring block and the third connecting ring block fixedly connected to the surface of the threaded adjusting rod drive the drill bit body to be pushed. And during the pushing process, the scale column fixedly connected to the outer arc surface connecting plate of the second connecting ring block slides synchronously in the extension plate. Then, the remaining three groups of threaded adjusting rods are adjusted in sequence according to the scale position where the scale column moves. At the same time, the L - shaped rod on the side surface of the connecting plate controls the movement of the C - shaped installation block. The drill pipe is clamped and positioned by the clamping grooves formed in the four adjusted C - shaped installation blocks, so that the drill pipe is installed at the central position. Then, the first screw passes through the C - shaped installation block and the drill pipe for threaded installation. During the whole operation process, the drill pipe and the drill bit body to be replaced can be quickly centered, ensuring the installation accuracy, thus avoiding the time consumed by repeated correction. And the whole operation steps are simple and more practical.

[0014] 2. For the adjustable drilling rig drill bit, the two mounting plates fixedly connected to the top of the drill bit body are clamped with the two adapter blocks fixedly installed on the surface of the drill pipe. Then, the second screw is threaded into the alignment holes formed by the screw holes formed in the adapter block and the mounting plate to complete the installation. At the same time, the diversion grooves formed on both sides of the drill bit body can quickly discharge the sediment during the drilling process. During the whole operation process, the drill bit can be quickly replaced, avoiding the problem of difficult replacement caused by the fracture of the drill bit during long - term underground operation, and reducing the replacement difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the device of the utility model;

[0016] Figure 2 is of the utility model Figure 1 partial structure schematic diagram;

[0017] Figure 3 is of the utility model Figure 1 left - hand side structure schematic diagram.

[0018] In the figure: 1, drill pipe; 2, external frame; 3, drill bit body; 4, threaded adjusting rod; 5, first connecting ring block; 6, second connecting ring block; 7, third connecting ring block; 8, connecting plate; 9, extension plate; 10, scale column; 11, anti - detachment gasket; 12, L - shaped rod; 13, C - shaped mounting block; 14, first screw; 15, engaging groove; 16, adapter block; 17, mounting plate; 18, second screw; 19, diversion groove. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3, An adjustable drilling rig bit, including a drill pipe 1 and an external frame 2. The external frame 2 is provided with a screw groove, and a threaded adjusting rod 4 is threadedly connected inside the screw groove. By rotating the threaded adjusting rod 4 threadedly inside the external frame 2, during the rotation process, the limiting effect formed by the first connecting ring block 5 and the third connecting ring block 7 fixedly connected to the surface of the threaded adjusting rod 4 drives the drill bit body 3 to move forward. And during the pushing process, the scale column 10 fixedly connected to the connecting plate 8 on the outer arc surface of the second connecting ring block 6 slides synchronously inside the extension plate 9. Then, according to the scale position where the scale column 10 moves, the remaining three threaded adjusting rods 4 are adjusted in sequence. At the same time, the L-shaped rod 12 on the side of the connecting plate 8 controls the movement of the C-shaped mounting block 13. The engaging grooves 15 opened in the four adjusted C-shaped mounting blocks 13 are used to engage and position the drill pipe 1, so that the drill pipe 1 is installed in the central position. Then, the first screw 14 passes through the C-shaped mounting block 13 and the drill pipe 1 for threaded installation. During the whole operation process, the drill pipe 1 and the drill bit body 3 that need to be replaced can be quickly centered, ensuring the installation accuracy, thus avoiding the time-consuming repeated correction. And the whole operation steps are simple and more practical. The surface of the threaded adjusting rod 4 is fitted with the second connecting ring block 6. The outer arc surface of the second connecting ring block 6 is fixedly connected with a connecting plate 8. The side of the connecting plate 8 is fixedly connected with an L-shaped rod 12. The bottom of the L-shaped rod 12 is fixedly connected with a C-shaped mounting block 13. The side of the C-shaped mounting block 13 is provided with an engaging groove 15. The drill pipe 1 is fitted inside the engaging groove 15. The C-shaped mounting block 13 and the engaging groove 15 are provided with mounting grooves, and a first screw 14 is threadedly connected inside the mounting grooves. Two fitting blocks 16 are fixedly installed on the surface of the drill pipe 1. The sides of the two fitting blocks 16 are both fitted with mounting plates 17. The drill bit is installed by forming an engagement between the two mounting plates 17 fixedly connected to the top of the drill bit body 3 and the two fitting blocks 16 fixedly installed on the surface of the drill pipe 1. Then, the second screw 18 is threadedly inserted into the alignment holes formed by the screw holes opened in the fitting blocks 16 and the mounting plates 17 to complete the installation. During the whole operation process, the drill bit can be quickly replaced, avoiding the problem of difficult replacement caused by the fracture of the drill bit during long-term underground operation, reducing the replacement difficulty. The bottom of the mounting plate 17 is fixedly installed with the drill bit body 3. The fitting blocks 16 and the mounting plates 17 are provided with screw holes, and a second screw 18 is threadedly connected inside the screw holes. The top of the external frame 2 is fixedly connected with an extension plate 9. The scale column 10 is fitted inside the extension plate 9. The side of the scale column 10 is fixedly connected with a connecting plate 8. The surface of the threaded adjusting rod 4 is fixedly installed with a first connecting ring block 5. The side of the first connecting ring block 5 is fitted with the second connecting ring block 6. The surface of the threaded adjusting rod 4 is fixedly installed with a third connecting ring block 7. The side of the third connecting ring block 7 is fitted with the second connecting ring block 6. Flow guiding grooves 19 are respectively opened on both sides of the drill bit body 3. The flow guiding grooves 19 opened on both sides of the drill bit body 3 can discharge the sediment during the drilling process faster. A number of scale grooves are opened on the surface of the scale column 10. An anti-detachment gasket 11 is fixedly installed on the side of the scale column 10.

[0021] Working principle: During the operation process, the operator rotates the threaded adjusting rod 4 within the internal thread of the external frame 2. During the rotation, the limiting effect formed by the first connecting ring block 5 and the third connecting ring block 7 fixedly connected to the surface of the threaded adjusting rod 4 drives the drill bit body 3 to move forward. And during the forward movement, the scale column 10 fixedly connected to the connecting plate 8 on the outer arc surface of the second connecting ring block 6 slides synchronously within the extension plate 9. Then, the remaining three groups of threaded adjusting rods 4 are adjusted in sequence according to the scale position where the scale column 10 moves. At the same time, the L-shaped rod 12 on the side of the connecting plate 8 controls the movement of the C-shaped mounting block 13. The engaging grooves 15 opened by the four adjusted C-shaped mounting blocks 13 are used to engage and position the drill pipe 1, so that the drill pipe 1 is installed in the central position. Then, the first screw 14 passes through the C-shaped mounting block 13 and the drill pipe 1 for threaded installation. At the same time, two mounting plates 17 fixedly connected to the top of the drill bit body 3 form an engagement with two matching blocks 16 fixedly installed on the surface of the drill pipe 1. Then, the second screw 18 is threaded into the alignment holes formed by the screw holes opened by the matching block 16 and the mounting plate 17 to complete the installation. At the same time, the diversion grooves 19 opened on both sides of the drill bit body 3 can discharge the sediment during the drilling process more quickly.

[0022] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable well drilling rig drill bit, characterized in that: The invention comprises a drill rod (1) and an external frame (2), wherein the external frame (2) is provided with a screw groove, and the internal thread of the screw groove is connected to a screw adjusting rod (4), the surface of the screw adjusting rod (4) is fitted with a second connecting ring block (6), the outer arc surface of the second connecting ring block (6) is fixedly connected to a connecting plate (8), the side of the connecting plate (8) is fixedly connected to an L-shaped rod (12), the bottom of the L-shaped rod (12) is fixedly connected to a C-shaped mounting block (13), the side of the C-shaped mounting block (13) is provided with a clamping groove (15), the inside of the clamping groove (15) is fitted with the drill rod (1), the C-shaped mounting block (13) and the clamping groove (15) are provided with a mounting groove, and the internal thread of the mounting groove is connected to a first screw rod (14).

2. The adjustable well drilling rig drill bit according to claim 1, characterized in that: Two adapter blocks (16) are fixedly mounted on the surface of the drill rod (1), and mounting plates (17) are attached to the sides of the two adapter blocks (16). A drill body (3) is fixedly mounted on the bottom of the mounting plate (17). Screw holes are provided in the adapter blocks (16) and the mounting plate (17), and a second screw rod (18) is threadedly connected to the inner part of the screw hole.

3. The adjustable well drilling rig drill bit according to claim 1, characterized in that: An extension plate (9) is fixedly connected to the top of the external frame (2), a scale column (10) is fitted inside the extension plate (9), and a connecting plate (8) is fixedly connected to the side of the scale column (10).

4. The adjustable well drilling rig drill bit according to claim 1, characterized in that: A first connecting ring block (5) is fixedly mounted on the surface of the threaded adjustment rod (4), and a second connecting ring block (6) is attached to the side surface of the first connecting ring block (5).

5. The adjustable well drilling rig drill bit according to claim 1, characterized in that: A third connecting ring block (7) is fixedly mounted on the surface of the threaded adjustment rod (4), and a second connecting ring block (6) is attached to the side surface of the third connecting ring block (7).

6. The adjustable well drilling rig drill bit according to claim 2, characterized in that: Guide grooves (19) are respectively provided on both sides of the drill bit body (3).

7. The adjustable well drilling rig drill bit according to claim 3, characterized in that: A plurality of scale grooves are provided on the surface of the scale column (10), and an anti-dropping gasket (11) is fixedly mounted on the side of the scale column (10).

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