Rock stratum drilling bit with vertical shaft structure

Abstract

The utility model relates to the technical field of drill bits, in particular to a rock stratum body drilling bit of a vertical shaft structure. The drill bit is large in torsion resistance, not prone to deformation and not prone to opening in the drilling process. Comprising a drill top used for being fixedly connected with a drill rod on the rotary drilling rig, a fixed half body fixedly connected with the drill top and an open half body hinged to the fixed half body. Further, the drill top is fixedly welded with the fixed half body; the fixed half body and the open half body are connected in a hinged mode through a hinged shaft connecting piece, the hinged shaft connecting piece comprises a plurality of first shaft sleeves fixedly connected with the fixed half body, a plurality of second shaft sleeves fixedly connected with the open half body and a vertical shaft, and the first shaft sleeves and the second shaft sleeves are rotationally connected with the vertical shaft; the drill top comprises a top plate and a connecting square fixedly connected with the top plate, and the bottom of the connecting square is fixedly welded to the bottom of the top plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drill bit, in particular to a vertical shaft structure's rock formation body open drill bit. BACKGROUND

[0002] It is known that the rotary drilling rig drilling hole forming process rotary drilling hole forming, utilizes the mast guide to place the bottom bucket type drill bit with the valve to the hole position, the drill power head device provides the torque for the drill rod, the pressurizing device passes through the pressurizing power head mode and transmits the pressure to the drill rod drill bit, the drill bit breaks the rock and soil and directly loads it into the drill bit, and then the drill lifting device and telescopic drill rod take out the drill bit from the hole to unload the soil, and the cycle is repeated until the drilling reaches the design depth.

[0003] For example, the utility model patent CN218265846U discloses a body open type drill bucket, which comprises a connecting side, a drill cylinder and an opening mechanism, the drill cylinder is arranged at the bottom of the connecting side, and the drill cylinder comprises two half cylinders arranged oppositely, and the two half cylinders are rotatably connected with the connecting side through shafts respectively; the opening mechanism is arranged on the outer side of the connecting side, and the opening mechanism comprises a sliding assembly slidingly arranged along the height direction of the connecting side, a lifting assembly connected with the sliding assembly and a driving assembly driving the sliding assembly to slide, the body open type drill bucket facilitates opening of the half cylinders for unloading, and the use reliability is improved.

[0004] However, when the device is implemented, the following defects are found: as in the above patent, the existing rock formation body open drill bit adopts the above-mentioned transversely arranged hinge shaft, and the transversely arranged hinge shaft is easily deformed due to the torsional force in the drilling process; and the rock formation body open drill bit is easily opened in the drilling process, which affects the drilling efficiency. UTILITY MODEL CONTENTS

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a vertical shaft structure's rock formation body open drill bit which has large torsional resistance, is not easy to deform and is not easy to open in the drilling process.

[0007] (II) Technical scheme

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a vertical shaft structure's rock formation body open drill bit, which comprises a drill top for fixed connection with an upper drill rod of a rotary drilling rig, a fixed half body fixedly connected with the drill top and a body open half body hingedly connected with the fixed half body; further, the drill top and the fixed half body are fixedly welded.

[0009] Preferably, the fixed half and the body opening half are connected by a hinge shaft connector, the hinge shaft connector comprises a plurality of first shaft sleeves fixedly connected with the fixed half, a plurality of second shaft sleeves fixedly connected with the body opening half and a vertical shaft, the plurality of first shaft sleeves and the plurality of second shaft sleeves are rotationally connected with the vertical shaft; further, the plurality of first shaft sleeves and the plurality of second shaft sleeves are staggered.

[0010] Preferably, the drill top comprises a top plate and a connecting side fixedly connected with the top plate, the bottom of the connecting side is fixedly welded with the bottom of the top plate.

[0011] Preferably, the bottom of the top plate is provided with a top plate lower rib plate, and the connecting side is provided with a connecting side rib plate.

[0012] Preferably, the body opening half is provided with an error prevention plate away from the hinge shaft connector.

[0013] Preferably, the error prevention plate is provided with a guide slope.

[0014] Preferably, the fixed half and the body opening half each comprise an upper cylinder body and a lower cylinder body, the bottom of the lower cylinder body is fixedly provided with a guide plate arranged in a vertical direction, the guide plate is provided with a plurality of cutting teeth, the guide plates on the fixed half and the body opening half are arranged in a staggered manner, and a gap allowing the entry of slag is left between the guide plates on the fixed half and the body opening half.

[0015] Preferably, the lower cylinder body on the fixed half and the body opening half is provided with a scraper.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the vertical shaft structure rock layer body opening drill bit has the following beneficial effects: the hinge shaft is changed into a vertical hinge connection of the fixed half and the body opening half, the torsional force of the drilling machine is well shared by the cylinder body enclosed by the fixed half and the body opening half; during the drilling process of the drill bit, the torsional force will generate a force on the body opening half towards the fixed half, and the excavated soil layer or rock layer will generate a closing pushing force on the body opening half towards the fixed half, so that the body opening half and the fixed half are tightly closed; during the soil unloading operation, the drill bit is reversed, and under the action of the centrifugal force, the body opening half rotates away from the fixed half and is opened, thereby realizing the rapid unloading of the slag or slag stone in the cylinder body; the torsional force during the soil taking operation of the drill bit is dispersed to the cylinder body, so that the torsional force is not concentrated on the hinge connection between the fixed half and the body opening half, and the hinge connection is not easy to deform; the torsional force and the slag resistance are converted into the closing pushing force between the body opening half and the fixed half, so that the body opening half is not easy to open during the drilling process; meanwhile, a complex opening mechanism is not needed, and the body opening half can be automatically opened through the centrifugal force generated during the rotation of the drill bit, so that the structure is simpler and more scientific, and the post-maintenance and repair are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the body open half body opening state three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 is the body open half body closing state three-dimensional structure schematic diagram of the utility model;

[0020] Figure 3 is the fixed half body three-dimensional structure schematic diagram of the utility model;

[0021] Figure 4 is the bottom view plane structure schematic diagram of the utility model;

[0022] Mark in the drawing: 1, drill top; 2, fixed half body; 3, body open half body; 4, first shaft sleeve; 5, second shaft sleeve; 6, vertical shaft; 7, top plate; 8, connecting square; 9, top plate lower rib plate; 10, connecting square rib plate; 11, mistake prevention plate; 12, lead-in groove; 13, upper cylinder; 14, lower cylinder; 15, guide plate; 16, cutting tooth; 17, scraper. DETAILED DESCRIPTION

[0023] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment.

[0024] A body open type drill bucket as described in the background art; the existing rock stratum body open drill bit mostly adopts the above-mentioned transversely arranged hinge shaft, and the transversely arranged hinge shaft is prone to deformation due to the torsional force in the drilling process; and the rock stratum body open drill bit is prone to opening in the process of drilling, which affects the drilling efficiency.

[0025] In order to solve this technical problem, the utility model provides a rock stratum body open drill bit with a vertical shaft structure, which is applied to pile hole drilling of soil layer.

[0026] Specifically, please refer to Figures 1-2 The rock stratum body open drill bit with a vertical shaft 6 structure specifically comprises: a drill top 1 for fixed connection with a drill rod of a rotary drilling rig, a fixed half body 2 fixedly connected with the drill top 1, and a body open half body 3 hingedly connected with the fixed half body 2; further, the drill top 1 is fixedly welded with the fixed half body 2; the fixed half body 2 and the body open half body 3 can be hingedly connected through a hinge type hinge shaft or other reasonable structures for hingedly connecting the fixed half body 2 and the body open half body 3 can also be applied to the case, which will not be further described and limited here.

[0027] The rock stratum body open drill bit with a vertical shaft 6 structure provided by the utility model has large torsional resistance and is not prone to deformation and opening in the process of drilling; the structure is simple, scientific and reasonable, and it is convenient to unload the muck.

[0028] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0029] It should be noted that like reference numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it need not be further defined and explained in the subsequent views.

[0030] Embodiment 1

[0031] Please refer to Figures 1-3 A vertical shaft structure rock stratum body opening drill bit, which comprises a drill top 1 for fixed connection with a drill rod of a rotary drilling rig, a fixed half 2 fixedly connected with the drill top 1, and a body opening half 3 hingedly connected with the fixed half 2; the fixed half 2 and the body opening half 3 are hingedly connected through a hinge shaft connecting piece, the hinge shaft connecting piece comprises a plurality of first shaft sleeves 4 fixedly connected with the fixed half 2, a plurality of second shaft sleeves 5 fixedly connected with the body opening half 3, and a vertical shaft 6, the plurality of first shaft sleeves 4 and the plurality of second shaft sleeves 5 are all rotationally connected with the vertical shaft 6; further, the plurality of first shaft sleeves 4 and the plurality of second shaft sleeves 5 are arranged alternately; furthermore, a shaft sleeve is welded on the drill top 1, and an end portion of the vertical shaft 6 is rotationally installed in the shaft sleeve; so as to improve the rotational connection stability between the drill top 1, the fixed half 2 and the body opening half 3.

[0032] Specifically, the drill top 1 comprises a top plate 7 and a connecting square 8 fixedly connected with the top plate 7, and the bottom of the connecting square 8 is fixedly welded with the bottom of the top plate 7.

[0033] Specifically, the bottom of the top plate 7 is provided with a top plate lower rib plate 9, and the connecting square 8 is provided with a connecting square rib plate 10.

[0034] The vertical shaft structure rock stratum body opening drill bit provided by the embodiment realizes the hinged connection of the fixed half 2 and the body opening half 3 under the action of the first shaft sleeve 4, the second shaft sleeve 5 and the vertical shaft 6, and at the same time, can avoid leaving a gap between the fixed half 2 and the body opening half 3 to prevent the soil residue or slag stone from escaping outside the rotational hinged connection after the fixed half 2 and the body opening half 3 are closed; the connecting square 8 can be detachably connected with the square head of the drill rod of the rotary drilling rig through a pin or a bolt; the quick disassembly and assembly of the rock stratum body opening drill bit and the drill rod are realized; the connecting square rib plate 10 is used to connect the connecting square 8 and the top plate 7 as a whole, and plays a role in strengthening the structure and transmitting the torque; the drilling machine transmits the pressing force to the top plate 7 through the connecting square 8, and the top plate 7 transmits the pressing force to the fixed half 2; the top plate lower rib plate 9 supports the top plate 7 and shares the downward pressing force, and plays a role in strengthening the structure; the top plate lower rib plate 9 is welded with the fixed half 2, and also has a certain torque transmission effect; so as to improve the overall structural strength of the rock stratum body opening drill bit.

[0035] Embodiment 2

[0036] The vertical shaft structure of the rock stratum body opening drill bit provided in the embodiment 1 is further optimized, and specific reference can be made to Figure 1 , and the anti-mistake plate 11 is arranged on the side of the body opening half 3 away from the hinge shaft connecting piece.

[0037] Specifically, the anti-mistake plate 11 is provided with a guide bevel 12.

[0038] Specific reference can be made to Figure 1 and Figure 4 , the fixed half 2 and the body opening half 3 each include an upper cylinder 13 and a lower cylinder 14, the lower cylinder 14 is fixedly installed at the bottom and is provided with a guide plate 15 arranged in a vertical inclination, and the guide plate 15 is installed with a plurality of cutting teeth 16, the guide plates 15 on the fixed half 2 and the body opening half 3 are arranged in a staggered manner, and a gap is left between the guide plates 15 on the fixed half 2 and the body opening half 3 to allow the sludge to enter.

[0039] Specifically, the lower cylinder 14 on the fixed half 2 and the body opening half 3 is each provided with a scraper 17.

[0040] The vertical shaft structure of the rock stratum body opening drill bit provided in the embodiment, the anti-mistake plate 11 plays a role in guiding and preventing mistakes during the opening and closing of the body opening half 3, and further improves the torsional strength limit of the rock stratum body opening drill bit; the guide bevel 12 can guide the body opening half 3 to gradually close with the fixed half 2, and improve the smoothness and tightness of the closing of the plate body and the fixed half 2; the cutting teeth 16 scratch and break the soil layer or rock stratum during the drilling process of the rock stratum body opening drill bit, and the broken sludge or sludge stone is scooped into the cylinder enclosed by the fixed half 2 and the body opening half 3 under the action of the inclined slope of the guide plate 15, and as the sludge or sludge stone continuously enters the cylinder, the sludge or sludge stone is extruded into a columnar block; the scraper 17 can scrape and trim the vertical side wall of the formed drill hole, and improve the smoothness of the side wall of the formed pile hole.

[0041] The use process of the vertical shaft structure of the rock stratum body opening drill bit provided in the embodiment is as follows: the rotary drilling rig drives the rock stratum body opening drill bit to rotate in the arrow direction shown in Figure 2 and feed downward, during the drilling process of the drill bit, the torsional force will generate a force on the body opening half 3 towards the fixed half 2, and at the same time, the to-be-excavated soil layer or rock stratum will generate a closing pushing force on the body opening half 3 towards the fixed half 2, so that the body opening half 3 and the fixed half 2 are tightly closed, the cutting teeth 16 break the soil layer or rock stratum, and the sludge or sludge stone enters the cylinder under the action of the guide plate 15; during the unloading operation, the drill bit is reversed, and reference can be made to the arrow direction in Figure 1 , the body opening half 3 rotates away from the fixed half 2 under the action of centrifugal force and is opened, thereby realizing rapid unloading of the sludge or sludge stone in the cylinder.

[0042] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the above-mentioned term in the utility model concrete meaning according to specific circumstances.

[0043] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and not all the embodiments, the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model.The utility model can be realized in many different forms, and contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent replacement to part of the technical features.For equivalent structures made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the utility model.

Claims

1. A vertically oriented drill bit for drilling through rock formations, characterized in that, It includes a drill top (1) for fixed connection with the drill rod on the rotary drilling rig, a fixed half (2) for fixed connection with the drill top (1), and an open half (3) hinged to the fixed half (2); The fixed half (2) and the open half (3) are hinged together by a hinge shaft connector. The hinge shaft connector includes a plurality of first bushings (4) fixedly connected to the fixed half (2), a plurality of second bushings (5) fixedly connected to the open half (3), and a vertical shaft (6). The plurality of first bushings (4) and the plurality of second bushings (5) are rotatably connected to the vertical shaft (6).

2. The rock strata drilling bit with a vertical axis structure according to claim 1, characterized in that, The drill top (1) includes a top plate (7) and a connecting piece (8) fixedly connected to the top plate (7), the bottom of the connecting piece (8) being fixedly welded to the bottom of the top plate (7).

3. The rock strata drilling bit with a vertical axis (6) structure according to claim 2, characterized in that, The bottom of the top plate (7) is equipped with a bottom stiffener plate (9), and the connecting square (8) is equipped with a connecting square stiffener plate (10).

4. The rock strata drilling bit with a vertical axis structure according to claim 1, characterized in that, An anti-misalignment plate (11) is provided on the side of the open half-body (3) away from the hinge shaft connector.

5. The rock strata drilling bit with a vertical axis structure according to claim 4, characterized in that, The error prevention plate (11) is provided with an inlet bevel (12).

6. The rock strata drilling bit with a vertical axis structure according to claim 1, characterized in that, Both the fixed half-body (2) and the open half-body (3) include an upper cylinder (13) and a lower cylinder (14). The bottom of the lower cylinder (14) is fixedly installed with a guide plate (15) that is inclined vertically. Multiple cutting teeth (16) are installed on the guide plate (15). The guide plates (15) on the fixed half-body (2) and the open half-body (3) are staggered. A gap is left between the guide plates (15) on the fixed half-body (2) and the open half-body (3) to allow the slag to enter.

7. The rock strata drilling bit with a vertical axis structure according to claim 6, characterized in that, Scrapers (17) are provided on the lower cylinder (14) of both the fixed half (2) and the open half (3).

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