CN212027686U

CN212027686U - Large-caliber hob type reaming bit for horizontal directional drilling

Info

Publication number: CN212027686U
Application number: CN202020634691.1U
Authority: CN
Inventors: 张启国; 石贤增; 常先睿; 李子涵; 王钱泱
Original assignee: Anhui Lianghuai Construction Co ltd; Anhui Jianzhu University
Current assignee: Anhui Lianghuai Construction Co ltd; Anhui Jianzhu University
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-11-27
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses a horizontal directional drilling is with heavy-calibre hobbing cutter formula reamer bit, including boring the body and guide arm, evenly be equipped with a plurality of spread grooves on boring the body, fixed mounting has a plurality of and correspond spread groove matched with connecting block on the guide arm, bore internal being equipped with the turn trough, and the turn trough internal rotation is connected with two-way lead screw, threaded connection has the spill slider that two symmetries set up on the two-way lead screw, sliding connection has symmetrical spill movable block one in position, spill movable block two on the two-way lead screw, bore internal being equipped with two spill sliders and spill movable block one, spill movable block two phase complex spout. Has the advantages that: the utility model discloses a spill movable block one, spill movable block two, two spill sliders and the cooperation that corresponds a plurality of connecting blocks can make and bore the body and be connected more closely with the guide arm, and when dismantling and bore the body, only need clockwise rotation adjust the pole can, it is comparatively simple and convenient to operate, can improve work efficiency to a certain extent.

Description

Large-caliber hob type reaming bit for horizontal directional drilling

Technical Field

The utility model relates to a horizontal directional drilling technical field especially relates to a horizontal directional drilling is with heavy-calibre hobbing cutter formula reamer bit.

Background

The horizontal directional drill is a construction machine for laying underground pipelines or cables and other public facilities on the premise of not excavating the ground surface, has the advantages of high construction speed, high construction precision, low cost and the like, and is widely applied to the fields of water supply, electric power, petroleum and the like.

The existing horizontal directional drill needs to replace different drill bits when drilling and laying pipelines, for example, the existing drill hole needs to be enlarged when laying the pipelines, so that the existing horizontal directional drill needs to be used for a large-caliber hob type hole expanding drill bit, but the existing drill bit and the guide rod are connected more complexly, so that the operation of replacing the drill bit is inconvenient, and the working efficiency is reduced to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the prior art and providing a large-caliber hob type reamer bit for horizontal directional drilling.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a large-caliber hob type hole expanding drill bit for a horizontal directional drill comprises a drill body and a guide rod, wherein a plurality of connecting grooves are uniformly formed in the drill body, a plurality of connecting blocks matched with the corresponding connecting grooves are fixedly mounted on the guide rod, a rotary groove is formed in the drill body, a bidirectional lead screw is rotatably connected in the rotary groove, two symmetrically-arranged concave sliding blocks are in threaded connection with the bidirectional lead screw, a first concave moving block and a second concave moving block which are symmetrically arranged in positions are in sliding connection with the bidirectional lead screw, a sliding groove matched with the two concave sliding blocks, the first concave moving block and the second concave moving block is formed in the drill body, and the sliding groove is communicated with the connecting grooves;

the drill body comprises a drill body, a plurality of connecting blocks and a concave moving block, wherein the drill body is provided with a plurality of concave moving blocks, the concave moving blocks are arranged on the drill body, the concave moving blocks are arranged on the.

In foretell heavy-calibre hobbing cutter formula reaming drill bit for directional boring of level, connection structure comprises bull stick, two spacing grooves, two connecting rods and two fixed blocks, two the fixed block respectively fixed mounting be in the one end that spill slider and spill movable block two are close to, two the connecting rod rotates respectively to be connected on two fixed blocks, and rotates through the bull stick between two connecting rods and connect, two the spacing groove symmetry is seted up on the lateral wall of spout, and two spacing grooves cooperate with the both ends of bull stick respectively.

In foretell heavy-calibre hobbing cutter formula reamer bit for directional brill of level, be equipped with the adjustment tank on the outer wall of the brill body, and adjustment tank and rotary chute intercommunication, the one end fixed mounting that two-way lead screw extends to the adjustment tank in has the regulation pole, and installs torsion spring between regulation pole and the adjustment tank.

In the large-caliber hob type hole expanding drill bit for the horizontal directional drill, the length of the limiting groove is greater than or equal to the distance between the concave sliding block and the concave moving block II.

In the large-caliber hob type reaming drill bit for the horizontal directional drill, the concave sliding block, the concave moving block I and the concave moving block II are all made of hard metal materials.

Compared with the prior art, the utility model discloses the advantage lies in:

1: the drill body and the guide rod can be separated by rotating the adjusting rod clockwise, the operation is simple, the drill body is convenient to disassemble and replace, and the working efficiency of the horizontal directional drill construction is improved to a certain extent.

2: through the matching of the concave moving block I and the concave moving block II with the corresponding connecting blocks, the connection between the connecting blocks and the drill body can be firmer, so that the connection stability between the drill body and the guide rod can be improved, and the possibility that the drill body falls off from the guide rod in the construction process is avoided.

3: through the cooperation of adjusting pole and torsion spring, when not exerting external force to the adjusting pole, can keep two-way lead screw to keep stable to can make concave movable block one, concave movable block two and two concave sliders and the connecting block that corresponds between keep stable, further improved the stability that the brill body is connected with the guide arm.

To sum up, the utility model discloses a spill movable block one, spill movable block two, two spill sliders and the cooperation that corresponds a plurality of connecting blocks can make the brill body be connected more closely with the guide arm, and when dismantling the brill body, only need clockwise rotation adjust the pole can, it is comparatively simple and convenient to operate, can improve work efficiency to a certain extent.

Drawings

Fig. 1 is a schematic structural view of a large-caliber hob type hole-expanding drill bit for a horizontal directional drill according to the present invention;

FIG. 2 is a top view of the drill body of FIG. 1;

FIG. 3 is an enlarged view of the structure of portion A in FIG. 1;

fig. 4 is an enlarged schematic view of a portion B in fig. 2.

In the figure: the device comprises a drill body 1, a guide rod 2, a connecting groove 3, a connecting block 4, a rotating groove 5, a bidirectional screw rod 6, a concave sliding block 7, a concave moving block I8, a concave moving block II 9, a sliding groove 10, an adjusting groove 11, an adjusting rod 12, a torsion spring 13, a fixed block 14, a connecting rod 15, a rotating rod 16 and a limiting groove 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, a large-diameter hob type reaming bit for a horizontal directional drill comprises a drill body 1 and a guide rod 2, wherein a plurality of connecting grooves 3 are uniformly arranged on the drill body 1, a plurality of connecting blocks 4 matched with the corresponding connecting grooves 3 are fixedly arranged on the guide rod 2, and the connecting grooves 3 and the connecting blocks 4 are matched to play a role in positioning the connection between the drill body 1 and the guide rod 2 and avoid installation deviation.

Be equipped with the turn trough 5 in the brill body 1, and the turn trough 5 internal rotation is connected with two-way lead screw 6, and threaded connection has two concave slider 7 that the symmetry set up on the two-way lead screw 6, when two-way lead screw 6 clockwise turning, can make two concave slider 7 be close to each other to make its and the connecting block 4 separation that corresponds, be convenient for carry out the dismantlement operation between brill body 1 and the guide arm 2.

The outer wall of the drill body 1 is provided with an adjusting groove 11, the adjusting groove 11 is communicated with the rotating groove 5, one end of the bidirectional screw rod 6 extending into the adjusting groove 11 is fixedly provided with an adjusting rod 12, a torsion spring 13 is arranged between the adjusting rod 12 and the adjusting groove 11, the design of the adjusting rod 12 is convenient for adjusting the rotation of the bidirectional screw rod 6, and the elasticity of the torsion spring 13 can keep the initial state (as shown in fig. 1) when external force is not applied to the adjusting rod 12, so that the stability of connection between the drill body 1 and the guide rod 2 is kept.

The bidirectional screw rod 6 is connected with a concave moving block I8 and a concave moving block II 9 which are symmetrical in position in a sliding mode, a sliding groove 10 which is matched with the two concave sliding blocks 7, the concave moving block I8 and the concave moving block II 9 is formed in the drill body 1, and the sliding groove 10 is communicated with the connecting grooves 3.

All be equipped with on a plurality of connecting blocks 4 that are located the edge of boring the body 1 fixed slot one with two spill sliders 7 matched with, the both ends of two connecting blocks 4 that are located the intermediate position of boring the body 1 are equipped with respectively with spill movable block one 8, spill movable block two 9 matched with fixed slot two, the cooperation of spill movable block one 8, spill movable block two 9 and two spill sliders 7 can realize simultaneously fixing a plurality of connecting blocks 4 to play the reinforcing effect to boring the body 1 and being connected with guide arm 2.

Two connecting structures are arranged between the concave sliding block 7 and the concave moving block II 9 on the left side, two connecting structures are also arranged between the concave sliding block 7 and the concave moving block I8 on the right side, each connecting structure is composed of a rotating rod 16, two limiting grooves 17, two connecting rods 15 and two fixing blocks 14, and the two concave sliding blocks 7 and the corresponding concave moving block I8 and concave moving block II 9 can be connected through the connecting structures, so that the concave sliding blocks can move relatively stably.

Two fixed blocks 14 are respectively and fixedly arranged at one end of the concave sliding block 7 close to the concave moving block two 9, two connecting rods 15 are respectively and rotatably connected on the two fixed blocks 14, and the two connecting rods 15 are rotatably connected through a rotating rod 16, two limiting grooves 17 are symmetrically arranged on the side wall of the sliding chute 10, and the two limiting grooves 17 are respectively matched with the two ends of the rotating rod 16, when the left concave sliding block 7 moves rightwards, the connecting rod 15 connected with the left concave sliding block is driven to slide upwards in the limiting groove 17, so that the concave moving block two 9 is driven to move leftwards through the matching of the rotating rod 16 and the other connecting rod 15, therefore, the separation of the left concave sliding block 7 and the concave moving block two 9 from the corresponding connecting block 4 is completed at the same time, and on the contrary, when the left concave sliding block 7 moves leftwards and is connected with the corresponding connecting block 4, the concave moving block two 9 moves rightwards and is connected with the corresponding connecting block 4 at the same time.

The length of the limiting groove 17 is larger than or equal to the distance between the concave sliding block 7 and the concave moving block two 9, and the size design has the advantage that the moving distance between the concave sliding block 7 and the concave moving block two 9 on the left side and the moving distance between the concave sliding block 7 and the concave moving block one 8 on the right side can be ensured to be large enough, so that the concave sliding blocks cannot be completely separated from the corresponding connecting blocks 4.

The concave sliding block 7, the concave moving block I8 and the concave moving block II 9 are all made of hard metal materials (the hard metal materials can be made of alloy steel materials), and the strength of all parts can be improved by using the hard metal materials, so that the stability of connection of the drill body 1 and the guide rod 2 is ensured.

Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A large-caliber hob type hole expanding drill bit for a horizontal directional drill comprises a drill body (1) and a guide rod (2), it is characterized in that a plurality of connecting grooves (3) are uniformly arranged on the drill body (1), a plurality of connecting blocks (4) matched with the corresponding connecting grooves (3) are fixedly arranged on the guide rod (2), a rotating groove (5) is arranged in the drill body (1), a bidirectional screw rod (6) is rotationally connected in the rotary groove (5), two symmetrically arranged concave sliding blocks (7) are in threaded connection on the bidirectional screw rod (6), the bidirectional screw rod (6) is connected with a concave moving block I (8) and a concave moving block II (9) which are symmetrical in position in a sliding way, a sliding groove (10) matched with the two concave sliding blocks (7), the concave moving block I (8) and the concave moving block II (9) is formed in the drill body (1), and the sliding groove (10) is communicated with the connecting grooves (3);

the drill comprises a drill body (1), a plurality of connecting blocks (4) positioned on the edge of the drill body (1) are respectively provided with a first fixing groove matched with two concave sliding blocks (7), two ends of each connecting block (4) positioned in the middle of the drill body (1) are respectively provided with a second fixing groove matched with a first concave moving block (8) and a second concave moving block (9), two connecting structures are arranged between the concave sliding block (7) positioned on the left side and the second concave moving block (9), and two connecting structures are also arranged between the concave sliding block (7) positioned on the right side and the first concave moving block (8).

2. The large-caliber hob type hole expanding drill bit for the horizontal directional drill according to claim 1, wherein the connecting structure comprises a rotating rod (16), two limiting grooves (17), two connecting rods (15) and two fixing blocks (14), the two fixing blocks (14) are respectively and fixedly installed at one end of the concave sliding block (7) close to the concave moving block II (9), the two connecting rods (15) are respectively and rotatably connected to the two fixing blocks (14), the two connecting rods (15) are rotatably connected through the rotating rod (16), the two limiting grooves (17) are symmetrically formed in the side wall of the sliding groove (10), and the two limiting grooves (17) are respectively matched with two ends of the rotating rod (16).

3. The large-caliber hob-type hole expanding drill bit for the horizontal directional drill according to claim 1, wherein an adjusting groove (11) is formed in the outer wall of the drill body (1), the adjusting groove (11) is communicated with the rotating groove (5), an adjusting rod (12) is fixedly installed at one end of the bidirectional screw rod (6) extending into the adjusting groove (11), and a torsion spring (13) is installed between the adjusting rod (12) and the adjusting groove (11).

4. The large-caliber hob-type hole expanding drill bit for the horizontal directional drill according to claim 2, wherein the length of the limiting groove (17) is greater than or equal to the distance between the concave sliding block (7) and the concave moving block II (9).

5. The large-caliber hob-type hole expanding drill bit for the horizontal directional drill according to claim 1, wherein the concave sliding block (7), the concave moving block I (8) and the concave moving block II (9) are all made of hard metal materials.