Horizontal orientation double-step cone reamer bit

Abstract

The utility model relates to the technical field of drill bits, in particular to a horizontal orientation double-step cone reamer bit which comprises a main shaft, a reaming assembly is installed on the outer wall of the main shaft, a conical rod is installed at one end of the main shaft, and a drill bit assembly is installed at one end of the conical rod. Thrust is applied to the mounting block through one end of the electric control air cylinder, the mounting block is stressed to rotate on the outer wall of the rotating shaft, then the mounting block drives the cones to move towards the outer side, and due to the fact that the multiple sets of cones are arranged, when the electric control air cylinder drives the mounting block to move towards the outer side, the cones are made to broach a drilled hole; according to the drilling device, pushing force is applied to the drilling tool bit through one end of the electric control air cylinder, the drilling tool bit extends out of the end opening of the limiting groove, the drilling tool bit can drill the side wall of a drilling hole, and then the hole expanding assembly expands the drilling hole to meet the drilling requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a horizontally oriented double-step cone reaming drill bit. Background Art

[0002] With the rapid development of urban surface construction, the scale of urban underground pipeline network construction is also expanding. Driven by people's growing awareness of environmental protection, horizontal directional drilling (HDD) construction methods, with their advantages of fast construction speed, high precision, and low cost, have completely changed the adverse effects of traditional construction methods, such as the various disruptions to the lives of surrounding residents and the potential damage to traffic, the environment, and the foundations of surrounding buildings. However, existing HDD double-step drill bits still have some problems during use.

[0003] In existing technology, when using horizontally oriented double-step roller cone reaming drill bits, due to their design limitations, the roller cones primarily focus on crushing the bottom rock and are unable to effectively expand the drill hole diameter, which greatly reduces the tool's practicality. Furthermore, the blade replacement process of such drill bits is relatively complex, and their ability to expand the sidewalls is insufficient, further limiting their performance in practical applications. Therefore, a horizontally oriented double-step roller cone reaming drill bit is needed to improve these issues. Utility Model Content

[0004] In order to solve the problem that when a roller reaming drill bit is used, the roller mainly acts on the bottom rock to break it but cannot effectively expand the diameter of the drill hole, which greatly reduces the practicality of the tool, the utility model provides a horizontally oriented double-step roller reaming drill bit to solve the above problem.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A horizontally oriented double-step cone reaming drill bit comprises a main shaft, a reaming assembly is mounted on the outer wall of the main shaft, a tapered rod is mounted on one end of the main shaft, and a drill bit assembly is mounted on one end of the tapered rod.

[0007] As a preferred solution of the present invention, the reaming assembly includes a step block, which is installed on the outer wall of the main shaft. A limiting groove is provided in a ring shape on the inner wall of the step block, and an electric control cylinder is installed on the inner wall of the limiting groove.

[0008] As a preferred solution of the present invention, a drilling head is installed at one end of the electric control cylinder, wherein the drilling head is slidably connected to the inner wall of the limit slot, and one end of the drilling head extends out of the limit slot, an installation shell is installed on the outer wall of the step block, and a controller is installed on the inner wall of the installation shell.

[0009] As a preferred solution of the present invention, the drill bit assembly includes a fixed block, which is installed on the bottom outer wall of the tapered rod. A tooth block is provided on the outer wall of the fixed block, and a rotating shaft is provided in a ring shape on one side of the fixed block and located on the outer wall of the tapered rod.

[0010] As a preferred solution of the present invention, a mounting block is rotatably connected to the outer wall of the rotating shaft, a gear is mounted on one end of the mounting block, and alloy teeth are provided on the outer wall of the gear.

[0011] As a preferred solution of the present invention, electric telescopic cylinders are arranged in a ring array on the outer wall of the fixed block, wherein the connection between the electric telescopic cylinders and the fixed block is a rotational connection, and one end of the electric telescopic cylinder is rotatably connected to the mounting block, and a conductive shell is arranged in a ring on the side wall of the mounting block, and a liquid outlet is provided at the port of the conductive shell.

[0012] As a preferred solution of the present invention, the controller is connected to the electric-controlled cylinder and the electric-controlled telescopic cylinder through wires, and the connection method is electrical connection. The drilling heads are provided in multiple groups and are respectively located on the inner walls of the limit grooves. The mounting shell is sleeved on the outer wall of the main shaft, and the fixed block is located on one side of the mounting block.

[0013] As a preferred solution of the present invention, the gears are provided in multiple groups and are respectively located on one side of the tooth block, the electric-controlled telescopic cylinders are provided in multiple groups and are respectively located on the bottom outer wall of the fixed block, the conductive shells are provided in multiple groups and are respectively located on the outer wall of the mounting block, and the liquid outlet is located on one side of the gear.

[0014] Compared with the prior art, the present invention can realize the reaming of the drill hole of the cone by arranging a reaming assembly in the horizontally oriented double-step cone reaming drill bit. One end of the electric cylinder applies thrust to the mounting block, so that the mounting block is rotated on the outer wall of the rotating shaft, and then the mounting block drives the cone to move outward. Since there are multiple groups of cones, when the electric cylinders drive the mounting blocks to move outward respectively, the cones can reame the drill hole, thereby solving the problem that the cones mainly act on the bottom rock to break, but cannot effectively expand the borehole diameter, which greatly reduces the practicality of the tool.

[0015] The utility model can expand the side wall of the drill hole by arranging a drill bit assembly in a horizontally oriented double-step cone reaming drill bit. One end of the electric cylinder applies thrust to the drilling bit, and the drilling bit extends at the end of the limit slot, which will cause the drilling bit to drill the side wall of the drill hole, and then the reaming assembly will expand the drill hole to meet the drilling requirements, thereby solving the problems of the drill bit's blade replacement process being relatively complicated and the insufficient expansion capacity of the side wall of the hole, which further limits its performance in actual applications and has poor practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the installation block of the utility model;

[0018] Figure 3 This is an enlarged schematic diagram of structure A of the present utility model;

[0019] Figure 4 This is a schematic structural diagram of the hole expansion assembly of the present utility model;

[0020] Figure 5 This is a schematic diagram of the installation shell structure of the utility model.

[0021] In the figure: 1. Spindle; 2. Reaming assembly; 201. Step block; 202. Limiting groove; 203. Electric cylinder; 204. Drilling head; 205. Mounting housing; 206. Controller; 3. Tapered rod; 4. Drill assembly; 401. Fixed block; 402. Tooth block; 403. Rotating shaft; 404. Mounting block; 405. Gear; 406. Alloy teeth; 407. Electric telescopic cylinder; 408. Conductive housing; 409. Liquid outlet. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example: See Figure 1-5 The horizontally oriented double-step cone reaming drill bit shown includes a main shaft 1, a reaming assembly 2 is mounted on the outer wall of the main shaft 1, a tapered rod 3 is mounted on one end of the main shaft 1, and a drill assembly 4 is mounted on one end of the tapered rod 3.

[0024] In this embodiment, specific reference Figure 1 、 Figure 2 、 Figure 4 and Figure 5The reaming assembly 2 includes a step block 201, which is mounted on the outer wall of the main shaft 1. A limiting groove 202 is provided in a ring shape on the inner wall of the step block 201. An electric control cylinder 203 is mounted on the inner wall of the limiting groove 202. A drilling head 204 is mounted on one end of the electric control cylinder 203. The drilling heads 204 are provided in multiple groups and are respectively located on the inner walls of the limiting groove 202, wherein the drilling heads 204 are slidably connected to the inner walls of the limiting groove 202, and one end of the drilling heads 204 extends out of the limiting groove 202. A mounting shell 205 is mounted on the outer wall of the step block 201, and the mounting shell 205 is sleeved on the outer wall of the main shaft 1. A controller 206 is mounted on the inner wall of the mounting shell 205.

[0025] In this embodiment, specific reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The drill bit assembly 4 includes a fixed block 401, which is mounted on the outer wall of the bottom of the tapered rod 3. A tooth block 402 is provided on the outer wall of the fixed block 401. A rotating shaft 403 is provided in an annular shape on one side of the fixed block 401 and located on the outer wall of the tapered rod 3. A mounting block 404 is rotatably connected to the outer wall of the rotating shaft 403. The fixed block 401 is located on one side of the mounting block 404. A gear 405 is installed at one end of the mounting block 404. The gears 405 are provided in multiple groups and are respectively located on one side of the tooth block 402. An alloy tooth 406 is provided on the outer wall of the gear 405. The fixed block 401 An electric telescopic cylinder 407 is arranged in a circular array on the outer wall of the fixed block 401. There are multiple groups of electric telescopic cylinders 407 and they are respectively located on the outer wall of the bottom of the fixed block 401. The electric telescopic cylinder 407 and the fixed block 401 are connected in a rotating manner, and one end of the electric telescopic cylinder 407 is rotatably connected to the mounting block 404. A conducting shell 408 is arranged in a circular shape on the side wall of the mounting block 404. There are multiple groups of conducting shells 408 and they are respectively located on the outer wall of the mounting block 404. A liquid outlet 409 is provided at the port of the conducting shell 408, and the liquid outlet 409 is located on one side of the gear 405.

[0026] Based on the above structural features and connection relationship, when the electric-controlled telescopic cylinder 407 applies thrust to the mounting block 404, the mounting block 404 rotates on the outer wall of the rotating shaft 403. Since the multiple groups of mounting blocks 404 simultaneously drive the cones 405 to move outward respectively, the gaps between the cones 405 cannot be drilled. When the rock and soil between the cones 405 contacts the tooth block 402, the tooth block 402 drills the rock and soil, which improves practicality.

[0027] Among them, the controller 206 is connected to the electric cylinder 203 and the electric telescopic cylinder 407 through wires, and the connection method is electrical connection, so that the controller 206 controls the electric cylinder 203 and the electric telescopic cylinder 407 to be energized. A liquid outlet 409 is provided at the port of the conductive shell 408. The liquid outlet 409 is located on one side of the gear 405. When the device is drilling, its conductive shell 408 is connected to an external lubricating liquid, and the lubricating liquid is discharged through the liquid outlet 409.

[0028] When the horizontal directional double-step cone reaming drill bit of this solution is working, the main shaft 1 is inserted into the connecting mechanism of the drill rig, so that the drill rig rotates with the device, and then the main shaft 1 drives the fixed block 401 to rotate through the tapered rod 3. When the fixed block 401 rotates, the fixed block 401 drives the mounting block 404 to rotate through the rotating shaft 403, and then the mounting block 404 drives the cone 405 to rotate. When the cone 405 rotates, the cone 405 drives the alloy tooth 406 to drill the rock and soil. When it is necessary to expand the hole in the drilling direction, it is only necessary to turn on the controller 206. The switch is turned on to enable the controller 206 to control the electric cylinder 203 to operate. One end of the electric cylinder 203 applies a thrust to the mounting block 404, so that the mounting block 404 is forced to rotate on the outer wall of the rotating shaft 403, and then the mounting block 404 drives the cone 405 to move outward. Since there are multiple groups of cones 405, when the electric cylinder 203 drives the mounting blocks 405 to move outward respectively, the cone 405 expands the drill hole, thereby solving the problem that the cone mainly acts on the bottom rock and cannot effectively expand the borehole diameter, which greatly reduces the practicality of the tool.

[0029] By providing a limiting groove 202 on the outer wall of the step block 201, when drilling, when it is necessary to expand the side wall, it is only necessary to turn on the switch of the controller 206, so that the controller 206 controls the electric cylinder 203 to operate. When the electric cylinder 203 rotates, one end of the electric cylinder 203 will apply a thrust to the drilling bit 204, so that the drilling bit 204 is forced to move outward on the inner wall of the limiting groove 202. When the spindle 1 drives the reaming assembly 2 to rotate, the drilling bit 204 extends at the end of the limiting groove 202, which will cause the drilling bit 204 to drill the side wall of the drill hole, and then the reaming assembly 2 will expand the drill hole to meet the drilling requirements, thereby solving the problem that the drill bit blade replacement process is relatively complicated and the expansion capacity of the side wall hole wall is insufficient, further limiting its performance in actual applications and having poor practicality.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontally oriented double-step cone reaming drill bit, comprising a main shaft (1), characterized in that: A reaming assembly (2) is mounted on the outer wall of the main shaft (1), a tapered rod (3) is mounted on one end of the main shaft (1), and a drill assembly (4) is mounted on one end of the tapered rod (3).

2. The horizontally directional double-step roller cone reaming drill bit according to claim 1, characterized in that: The reaming assembly (2) comprises a step block (201), the step block (201) being mounted on the outer wall of the main shaft (1), a limiting groove (202) being provided in an annular shape on the inner wall of the step block (201), and an electric control cylinder (203) being mounted on the inner wall of the limiting groove (202).

3. The horizontally directional double-step roller cone reaming drill bit according to claim 2, characterized in that: A drilling head (204) is installed at one end of the electric control cylinder (203), wherein the drilling head (204) is slidably connected to the inner wall of the limiting groove (202), and one end of the drilling head (204) extends out of the limiting groove (202), a mounting shell (205) is installed on the outer wall of the step block (201), and a controller (206) is installed on the inner wall of the mounting shell (205).

4. The horizontally directional double-step roller cone reaming drill bit according to claim 3, characterized in that: The drill bit assembly (4) comprises a fixed block (401), the fixed block (401) being mounted on the bottom outer wall of the tapered rod (3), a tooth block (402) being provided on the outer wall of the fixed block (401), and a rotating shaft (403) being provided in an annular shape on one side of the fixed block (401) and located on the outer wall of the tapered rod (3).

5. The horizontally directional double-step roller cone reaming drill bit according to claim 4, characterized in that: A mounting block (404) is rotatably connected to the outer wall of the rotating shaft (403), a tooth wheel (405) is mounted on one end of the mounting block (404), and alloy teeth (406) are provided on the outer wall of the tooth wheel (405).

6. The horizontally directional double-step roller cone reaming drill bit according to claim 5, characterized in that: The outer wall of the fixed block (401) is provided with electric-controlled telescopic cylinders (407) in a circular array, wherein the electric-controlled telescopic cylinders (407) and the fixed block (401) are connected in a rotational manner, and one end of the electric-controlled telescopic cylinders (407) is rotatably connected to the mounting block (404), and a conducting housing (408) is provided in a circular shape on the side wall of the mounting block (404), and a liquid outlet (409) is provided at a port of the conducting housing (408).

7. The horizontally directional double-step roller cone reaming drill bit according to claim 6, characterized in that: The controller (206) is connected to the electric-controlled cylinder (203) and the electric-controlled telescopic cylinder (407) through wires, and the connection method is electrical connection. The drilling tool head (204) is provided in multiple groups and is respectively located on the inner wall of the limiting groove (202). The mounting shell (205) is sleeved on the outer wall of the main shaft (1), and the fixing block (401) is located on one side of the mounting block (404).

8. The horizontally directional double-step roller cone reaming drill bit according to claim 7, characterized in that: The gears (405) are provided in multiple groups and are respectively located on one side of the tooth block (402); the electrically controlled telescopic cylinders (407) are provided in multiple groups and are respectively located on the bottom outer wall of the fixed block (401); the conductive housings (408) are provided in multiple groups and are respectively located on the outer wall of the mounting block (404); and the liquid outlet (409) is located on one side of the gear (405).

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