CN210798847U

CN210798847U - Special drill bit for down-the-hole drill carriage

Info

Publication number: CN210798847U
Application number: CN201921089081.1U
Authority: CN
Inventors: 白冬晓; 温亮辉; 郝志敬; 刘高企; 郝欣
Original assignee: Hebei Hongsen Highway Engineering Technology Co ltd
Current assignee: Hebei Hongsen Highway Engineering Technology Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-06-19
Anticipated expiration: 2029-07-12

Abstract

The utility model belongs to the technical field of the drill bit, a special drill bit of down-the-hole drill carriage is proposed, including the drilling rod, the one end of drilling rod evenly is provided with three stirring board along its circumference, stirs one side interconnect of board, and its junction is provided with the cylinder, the center pin of cylinder is unanimous with the center pin of drilling rod, the free end of cylinder is connected with the conical body, the one end that the stirring board is close to the cylinder is connected with the first tooth of excavating of a plurality of, the cross section of the first tooth of excavating is triangle-shaped, stir on the board and be provided with a plurality of second and excavate the tooth with the first adjacent one side of excavating the tooth, the cross section that. Through above-mentioned technical scheme, the problem that drill bit tamp soil nature is poor and fragile among the prior art has been solved.

Description

Special drill bit for down-the-hole drill carriage

Technical Field

The utility model belongs to the technical field of the drill bit, a special drill bit of down-the-hole drill carriage is related to.

Background

At present, with the development of economy in China and the proposal of a road repairing intersection number to be rich, the construction of roads in China is rapidly advanced, a plurality of newly-arranged road surfaces are arranged every day, however, in order to prolong the service life of the roads, holes are often drilled on a roadbed, cement paste is injected into the holes, so that the firmness degree of the roadbed is enhanced, the service life of the roads is prolonged, and in the process of drilling, the existing drill bit is applied to a drill bit for drilling, and due to the structural reason, the soil tamping performance of the existing drill bit is poor, so that the drilling efficiency is low, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model provides a special drill bit of down-the-hole drill carriage has solved the poor problem of the performance of ramming earth among the prior art.

The technical scheme of the utility model is realized like this:

the method comprises the following steps: the drilling rod comprises a drilling rod, wherein three stirring plates are uniformly arranged at one end of the drilling rod along the circumferential direction of the drilling rod, one sides of the stirring plates are connected with each other, a cylinder is arranged at the joint of the stirring plates, the central axis of the cylinder is consistent with that of the drilling rod, the free end of the cylinder is connected with a conical body, one end, close to the cylinder, of each stirring plate is connected with a plurality of first digging teeth, the cross sections of the first digging teeth are triangular, a plurality of second digging teeth are arranged on one side, adjacent to the first digging teeth, of each stirring plate, and the cross sections of the second digging teeth are triangular

As a further technical solution, a third digging tooth is provided on the tapered surface of the tapered body.

As a further aspect, three third digging teeth are provided uniformly in the circumferential direction of the cone.

As a further feature, the third digging tooth is angled away from the cylinder and toward a central axis of the cylinder to form a first plane, the first plane being perpendicular to the central axis of the cylinder.

As a further technical scheme, two annular notches are arranged on the drill rod along the circumferential direction of the drill rod, and the center of gravity of the drill bit is located between the two annular notches.

As a further technical scheme, the free end of the drill rod is connected with a fixed rod, and the central shaft of the fixed rod is consistent with the central shaft of the drill rod.

As a further technical scheme, two sides of the fixing rod are cut off to form a second plane.

As a further technical scheme, a plurality of through holes are formed in the stirring plate.

The utility model discloses a theory of operation and beneficial effect do:

1. in the utility model, the end part of the drill rod is provided with the stirring plate, the stirring plate is used for contacting the ground and then drilling, one end of the stirring plate close to the ground is inwards sunken during use, then the first digging tooth in the rotating process can smash the soil around the drill rod, the crushing efficiency is improved, then one end of the stirring plate close to the ground is provided with the second digging tooth, the soil below the stirring plate is favorably smashed, thereby better drilling is realized, the first digging tooth and the second digging tooth are arranged, when drilling is carried out, the acting force which is firstly played is larger, the abrasion is more, however, the abrasion of the stirring plate can be greatly reduced, the service life of the whole use is relatively prolonged, the efficiency is improved, the cone is arranged, when the drill rod rotates, a certain supporting function is provided, the rotation along the cone is convenient, the swinging sense of the drill bit during drilling is reduced, more easy to operate, the setting of third excavation tooth, with the ground contact at first the third excavation tooth, so reduced the wearing and tearing of cone, the third excavation tooth can be better smashes the soil on ground in addition, conveniently punch, the third excavation tooth is provided with threely, the first phase has improved the equilibrium of cone when rotating for one, only play the effect on one side because one, set up threely, at first guaranteed when certain rotational speed, can play quick pounding's effect, can improve the wearability for one in addition, the service life is prolonged, can satisfy the demand of performance for other a plurality of.

2. In the utility model, the angle of the first contact of the third digging tooth and the ground is ground into the first plane, because the angle is easy to break and damage, the third digging tooth is arranged into the plane, the third digging tooth is relatively thicker and more durable, the annular notch is arranged, the drill bits with different specifications are arranged according to the requirements when drilling, so that the third digging tooth has a corresponding bracket when being arranged so as not to collide with each other, then the third digging tooth is just positioned at the annular notch and is not easy to slide and be convenient to take, the fixed rod is arranged and is convenient to be connected with the drilling machine, the two sides of the fixed rod are cut off to form the second plane, when the fixed rod is arranged on the drilling machine, the relative rotation is prevented, the through hole is arranged, firstly, the material of the stirring plate can be saved, in addition, when the stirring plate rotates, a part of soil passes through the through hole, the resistance when the stirring plate rotates is reduced, thereby saving energy consumption.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the structure of the present invention;

fig. 4 is a schematic top view of the present invention;

FIG. 5 is a schematic view of a partially enlarged structure of the present invention A;

in the figure: 1-drill rod, 2-stir plate, 31-cylinder, 32-cone, 41-first digging tooth, 42-second digging tooth, 43-third digging tooth, 51-annular recess, 52-retaining bar, 6-through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to 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 efforts belong to the protection scope of the present invention.

As shown in fig. 1-5, the utility model provides a special drill bit of down-the-hole drill carriage, include:

the drilling rod 1, the one end of drilling rod 1 evenly is provided with three stirring board 2 along its circumference, stir one side interconnect of board 2, and its junction is provided with cylinder 31, the center pin of cylinder 31 is unanimous with the center pin of drilling rod 1, the free end of cylinder 31 is connected with conical body 32, stir the board 2 and be close to the one end of cylinder 31 and be connected with a plurality of first digging tooth 42, the cross section of first digging tooth 42 is triangle-shaped, stir on the board 2 and be provided with a plurality of second digging tooth 41 with the adjacent one side of first digging tooth 42, the cross section of second digging tooth 41 is triangle-shaped.

In the embodiment, the end part of the drill rod 1 is provided with the stirring plate 2, the stirring plate 2 is used for contacting the ground and then drilling, one end of the stirring plate 2 close to the ground is inwards sunken when in use, then the first digging tooth 42 can smash soil around the drill rod 1 in the rotating process, the crushing efficiency is improved, then one end of the stirring plate 2 close to the ground is provided with the second digging tooth 41, the soil below the stirring plate 2 is favorably smashed, and therefore the better drilling is realized, the first digging tooth 42 and the second digging tooth 41 are arranged, when in drilling, the acting force is larger firstly, the abrasion is more, however, the abrasion of the stirring plate 2 is greatly reduced, the service life of the whole body is relatively prolonged, the efficiency is improved, the cone 32 is arranged, when the drill rod 1 rotates, a certain supporting function is provided, and the rotation along the cone 32 is convenient, the swinging sense of the drill bit during drilling is reduced, and the operation is easier.

Further, a third digging tooth 43 is provided on the tapered surface of the tapered body 32.

In the embodiment, the third digging tooth 43 is arranged to contact with the ground, and the third digging tooth 43 is arranged firstly, so that the abrasion of the conical body 32 is reduced, and in addition, the third digging tooth 43 can better smash the soil on the ground, and the punching is convenient.

Further, three third digging teeth 43 are provided uniformly in the circumferential direction of the tapered body 32.

In this embodiment, third digging tooth 43 is provided with threely, and the first phase has improved the equilibrium of conical body 32 when rotating for one, because one only plays the effect of power on one side, sets up threely, has guaranteed at first when certain rotational speed, can play the effect of smashing to pieces fast, can improve the wearability for one in addition, improves the life-span, can satisfy the demand of performance for other a plurality of.

Further, the angle of the third digging tooth 43 away from the cylinder 31 and near the central axis of the cylinder 31 is ground flat to form a first plane that is perpendicular to the central axis of the cylinder 31.

In this embodiment, the corner of the third digging tooth 43 that first contacts the ground is ground flat to a first plane because it is very vulnerable to breakage if it is a corner, is provided as a flat surface, is relatively thicker, and is more durable.

Further, the drill rod 1 is provided with two annular recesses 51 along its circumference, and the center of gravity of the drill bit is located between the two annular recesses 51.

In this embodiment, the annular recess 51 is provided for facilitating the placement of the drill bit, and since the drill bits with different specifications are available according to the requirements during drilling, corresponding brackets are provided for avoiding mutual collision during placement, and then the annular recess 51 is just positioned for facilitating the taking.

Further, a fixing rod 52 is connected to the free end of the drill rod 1, and the central axis of the fixing rod 52 is coincident with the central axis of the drill rod 1.

In this embodiment, the fixing rod 52 is provided to facilitate connection with a drilling machine.

Further, both sides of the fixing lever 52 are cut off to form a second plane.

In this embodiment, the two sides of the fixing rod 52 are cut off to form a second plane, so that relative rotation is prevented when the fixing rod 52 is disposed on a drilling machine.

Further, a plurality of through holes 6 are arranged on the stirring plate 2.

In this embodiment, the through holes 6 are provided to firstly save the materials of the stirring plate 2, and in addition, when the stirring plate 2 rotates, a part of the soil passes through the through holes 6, so that the resistance of the stirring plate 2 during rotation is reduced, and the energy consumption can be reduced.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The special drill bit for the down-the-hole drill carriage is characterized by comprising a drill rod (1), wherein three stirring plates (2) are uniformly arranged at one end of the drill rod (1) along the circumferential direction of the drill rod, one sides of the stirring plates (2) are connected with each other, a cylinder (31) is arranged at the joint of the stirring plates, the central axis of the cylinder (31) is consistent with that of the drill rod (1), the free end of the cylinder (31) is connected with a conical body (32), one end, close to the cylinder (31), of each stirring plate (2) is connected with a plurality of first excavating teeth (42), the cross section of each first excavating tooth (42) is triangular, a plurality of second excavating teeth (41) are arranged on one side, adjacent to the first excavating teeth (42), of each stirring plate (2), and the cross section of each second excavating tooth (41) is triangular.

2. A drill bit for a down-the-hole drill carriage as claimed in claim 1, characterised in that the conical surface of the cone (32) is provided with third digging teeth (43).

3. A drill bit for a down-the-hole drill carriage as claimed in claim 2, characterised in that three of the third digging teeth (43) are provided evenly along the circumference of the cone (32).

4. A drill bit dedicated for a down-the-hole drill carriage according to claim 3, characterized in that the angle of the third digging tooth (43) remote from the cylinder (31) and close to the central axis of the cylinder (31) is ground flat to form a first plane, which is perpendicular to the central axis of the cylinder (31).

5. A drill bit for a down-the-hole drill carriage according to claim 1, characterized in that the drill rod (1) is provided with two annular recesses (51) along its circumference, the centre of gravity of the drill bit being located between the two annular recesses (51).

6. A drill bit for a down-the-hole drill carriage as claimed in claim 1, characterized in that a fixing rod (52) is attached to the free end of the drill rod (1), the central axis of the fixing rod (52) coinciding with the central axis of the drill rod (1).

7. A drill bit for a down-the-hole drill carriage as claimed in claim 6, characterised in that the securing rod (52) is cut off on both sides to form a second plane.

8. A drill bit for a down-the-hole drill carriage according to claim 1, characterized in that the stirring plate (2) is provided with a plurality of through holes (6).