Drill bit capable of improving hole forming quality

Abstract

The drill bit capable of improving the hole forming quality comprises a driving shaft and an inner fixing hole, a positioning seat used for positioning the position of the driving shaft is arranged on the outer side of the middle position of the driving shaft, and a bearing column used for movably connecting the driving shaft in an embedded mode is arranged at the lower end of the positioning seat. Compared with the prior art, the side planing head has the advantages that the side planing head is used for conducting directional rotary planing on the inner wall of a drilled hole, the embedded core is used for conducting embedded transmission on driving force, and therefore the inner wall of the drilled hole can be planed in a rotary mode. Multi-point embedding limiting is conducted on the interior of the drilling embedding head through a plurality of sets of inner limiting grooves so that the drilling embedding head can be prevented from falling off during drilling operation, limiting clamping wings are used for limiting the position of an upper positioning embedding piece and the position of a bottom embedding base, and therefore loosening among a first embedding base, a second embedding base and the bottom embedding base is prevented, and the drilling efficiency is improved. And the drilling embedded head is prevented from falling off.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling, and relates to a drill bit for improving the quality of hole formation. Background Art

[0002] Drilling is an operation that uses a drill bit to make a hole in a solid material. It is widely used in many fields, including but not limited to geological exploration, civil engineering, oil and gas exploration, etc. The main purpose of drilling is to obtain underground geological physical data, serve as a channel for geophysical logging, observe the hydrogeological dynamics of groundwater layers, and exploit groundwater, geothermal, oil and gas resources. If the drill head cannot remain tight during the drilling operation, the drill bit will loosen, which will cause a series of serious problems in the drilling quality.

[0003] Since the drill bit is unstable during operation, its position and direction may shift, resulting in the diameter, depth and position of the hole failing to meet the expected requirements. When the drill bit is loose, the contact between the drill bit and the ground is unstable, which can easily cause uneven wear on the drill bit surface and shorten the service life of the drill bit. This not only increases production costs, but may also lead to frequent replacement of drill bits, affecting production efficiency. Therefore, a drill bit that improves the quality of hole formation is urgently needed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a drill bit for improving the hole-making quality and solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized by the following technical solutions: a drill bit for improving hole forming quality, comprising: a driving shaft and an internal fixing hole, wherein a positioning seat for positioning the driving shaft is provided outside the middle position of the driving shaft;

[0006] A bearing column for movably engaging and connecting the drive shaft is disposed at the lower end of the positioning seat, and a drilling head for drilling holes in the ground is disposed at the lower end of the bearing column;

[0007] The inside of the drilling head is provided with a plurality of rotary grooves for separating and planing the soil, and the outside of the plurality of drilling heads is provided with side planing heads for planing and rotating the inner wall of the hole. The inner wall of the borehole can be directionally planed by using the side planing heads.

[0008] As a preferred embodiment, several groups of drilling heads for drilling and planing the bottom of the holes are provided at the bottom of several groups of drilling heads, and an insert for transmitting driving force to the driving shaft is provided on the outer side of the lower end of the driving shaft, so that the driving force can be transmitted by using the insert.

[0009] As a preferred embodiment, the upper and lower sides of the insert core are provided with a plurality of internal fixing holes for connecting and fixing with the interior of the upper positioning insert and the interior of the bottom insert seat, and the outer side of the upper end of the insert core is provided with a group of upper positioning inserts for limiting the internal position of the drilling insert head.

[0010] As a preferred embodiment, the lower end of the upper positioning insert is provided with an inner seat 1 and an inner seat 2 for embedding the inside of the drilling head, and the lower end of the inner seat 2 is provided with a group of bottom seats for preventing the bottom of the drilling head from being limited.

[0011] As a preferred embodiment, the bottom insert seat is provided with a plurality of groups of bottom limiting grooves for mutually interlocking the inside of the drilling head, and the inner insert seat 1, the inner insert seat 2 and the upper positioning insert plate are provided with a plurality of groups of internal limiting grooves for multi-point interlocking and limiting the drilling head. By using a plurality of groups of internal limiting grooves to perform multi-point interlocking and limiting the inside of the drilling head, the drilling head can be prevented from falling off during the drilling operation.

[0012] As a preferred embodiment, the drive shaft and the external drive motor are an integrated structure, the drive shaft passes through the interior of the positioning seat and the interior of the bearing column, and the bottom of the drive shaft is engaged with the embedding groove inside the embedding core;

[0013] The upper and lower sides of the embedding core are each provided with a group of limiting wings for embedding with the upper center position of the upper positioning embedding piece and a group of limiting wings for embedding with the middle position of the lower end of the bottom embedding seat. The internal fixing hole passes through the two groups of limiting wings and passes through the interior of the upper positioning embedding piece, the interior of the first embedding seat, the interior of the second embedding seat and the interior of the bottom embedding seat. The position of the upper positioning embedding piece and the bottom embedding seat can be limited by using the limiting wings, thereby preventing the first embedding seat, the second embedding seat and the bottom embedding seat from becoming loose and causing the drilling head to fall off.

[0014] As a preferred embodiment, the interior of the drilling insert is a hollow structure, and a plurality of groups of positioning seats are provided inside the drilling insert for mutually engaging the plurality of groups of inner limiting grooves and limiting bottom grooves.

[0015] After adopting the above technical scheme, the beneficial effects of the utility model are: by using the side planer head to carry out direction planing on the inner wall of the drill hole, by using the embedded core to carry out the embedding transmission of the driving force, by using several groups of internal limit grooves to carry out multi-point embedding limitation on the inside of the drilling head to prevent the drilling head from falling off during the drilling operation, by using the limit card wing to limit the position of the upper positioning insert and the bottom insert seat, thereby preventing the inner insert seat 1, the inner insert seat 2 and the bottom insert seat from becoming loose and causing the drilling head to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the front side plan view of a drill bit for improving hole quality according to the utility model;

[0018] Figure 2 It is a schematic diagram of the left oblique front top view of the bottom of the drilling insert in a drill bit for improving the hole forming quality of the utility model;

[0019] Figure 3 It is a front side top view of the structure of a drill bit mid-bottom insert for improving hole forming quality according to the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of a drill bit mid-bottom insert for improving hole-forming quality in the utility model from the front side upward view;

[0021] In the figure: 100-driving shaft, 110-positioning seat, 120-bearing column, 130-rotary embedding groove, 140-drilling embedding head, 150-side planing head, 160-drilling planing head, 170-embedded core, 180-upper positioning embedding piece, 190-embedded groove, 200-embedded seat one, 210-embedded seat two, 220-inner limiting groove, 230-bottom embedded seat, 240-limiting bottom groove, 250-inner fixing hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 , a drill bit for improving hole quality, comprising: a driving shaft 100, a drilling insert 140 and an internal fixing hole 250, a positioning seat 110 for positioning the driving shaft 100 is provided outside the middle position of the driving shaft 100;

[0024] A bearing column 120 for movably engaging and connecting the drive shaft 100 is disposed at the lower end of the positioning seat 110, and a drilling head 140 for drilling holes in the ground is disposed at the lower end of the bearing column 120;

[0025] The drilling head 140 is provided with several groups of rotary grooves 130 for separating and planing the soil, and the outside of several groups of drilling heads 140 is provided with side planing heads 150 for planing the inner wall of the hole. The inner wall of the borehole can be directionally planed by using the side planing heads 150.

[0026] At the bottom of the several groups of drilling heads 140, there are several groups of drilling heads 160 for drilling and planing the bottom of the holes. The outer side of the lower end of the driving shaft 100 is provided with an embedded core 170 for transmitting the driving force to the driving shaft 100. The driving force can be transmitted by using the embedded core 170.

[0027] The upper and lower sides of the insert core 170 are provided with a plurality of internal fixing holes 250 for connecting and fixing with the interior of the upper positioning insert 180 and the interior of the bottom insert seat 230. The upper outer side of the insert core 170 is provided with a group of upper positioning inserts 180 for limiting the internal position of the drilling insert head 140.

[0028] The lower end of the upper positioning insert 180 is provided with an inner seat 1 200 and an inner seat 210 for inserting the inside of the drilling insert 140 , and the lower end of the inner seat 210 is provided with a group of bottom seats 230 for preventing the bottom of the drilling insert 140 from being limited.

[0029] The bottom insert seat 230 is provided with a plurality of groups of bottom limiting grooves 240 for mutually interlocking the inside of the drilling head 140. The inner insert seat 1 200, the inner insert seat 2 210 and the upper positioning insert plate 180 are provided with a plurality of groups of inner limiting grooves 220 for performing multi-point interlocking and limiting on the drilling head 140. By using a plurality of groups of inner limiting grooves 220 to perform multi-point interlocking and limiting on the inside of the drilling head 140, the drilling head 140 can be prevented from falling off during the drilling operation.

[0030] The drive shaft 100 and the external drive motor are an integrated structure. The drive shaft 100 passes through the interior of the positioning seat 110 and the interior of the bearing column 120, and the bottom of the drive shaft 100 is engaged with the embedding groove 190 inside the embedding core 170.

[0031] The inside of the drilling head 140 is a hollow structure, and a plurality of positioning seats are arranged inside the drilling head 140 for mutually engaging the plurality of inner limiting grooves 220 and the limiting bottom grooves 240 .

[0032] See also Figure 1-Figure 4As the first embodiment of the utility model: In order to solve the problem that the position and direction of the drill bit may be offset due to instability during operation, resulting in the diameter, depth and position of the hole failing to meet the expected requirements, the contact between the drill bit and the ground is unstable when the drill bit is loose, which easily causes uneven wear on the surface of the drill bit and shortens the service life of the drill bit. First, when the staff needs to drill a hole on the ground, they place the drilling head 140 on the ground drilling point and keep the drilling head 140 in vertical contact with the ground. Then, they start the external drive motor, and drive the drive shaft 100 to rotate through the external drive motor, and drive the drilling head 140 to rotate through the drive shaft 100. Since the outer sides of several groups of drilling heads 140 are provided with side planing heads 150 for planing the inner wall of the hole, and the bottoms of several groups of drilling heads 140 are provided with several groups of ground planing heads 160 for drilling and planing the bottom of the hole, the side planing heads 150 and the ground planing heads 160 can evenly plan the ground, thereby ensuring the quality of drilling.

[0033] See also Figure 1-Figure 4 , as the second embodiment of the present utility model: based on the description in the above embodiment, further, when the drilling head 140 rotates, since the upper and lower sides of the embedding core 170 are provided with a group of limiting wings for embedding the upper center position of the upper positioning embedding piece 180 and a group of limiting wings for embedding the lower middle position of the bottom embedding seat 230, the internal fixing hole 250 passes through the two groups of limiting wings, and passes through the interior of the upper positioning embedding piece 180, the interior of the inner embedding seat 1 200, the interior of the inner embedding seat 210 and the interior of the bottom embedding seat 230. When the limiting wings are used to limit the positions of the upper positioning embedding piece 180 and the bottom embedding seat 230, looseness is prevented between the inner embedding seat 1 200, the inner embedding seat 210 and the bottom embedding seat 230, thereby preventing the drilling head 140 from falling off.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drill bit for improving hole quality, comprising: A drive shaft (100), a drilling head (140) and an internal fixing hole (250), characterized in that a positioning seat (110) for positioning the drive shaft (100) is provided outside the middle position of the drive shaft (100); A bearing column (120) for movably engaging and connecting the drive shaft (100) is provided at the lower end of the positioning seat (110); a drilling head (140) for drilling holes in the ground is provided at the lower end of the bearing column (120); The drilling plug (140) is provided with a plurality of groups of rotary grooves (130) for separating and planing out the soil inside, and a plurality of groups of side planing heads (150) are provided on the outside of the drilling plug (140) for planing and rotating the inner wall of the hole. The drive shaft (100) and the external drive motor are an integrated structure, the drive shaft (100) passes through the interior of the positioning seat (110) and the interior of the bearing column (120), and the bottom of the drive shaft (100) is engaged with the embedding groove (190) inside the embedding core (170); The insert core (170) is provided with a set of limiting latch wings for engaging with the upper center position of the upper positioning insert (180) and a set of limiting latch wings for engaging with the lower middle position of the bottom insert seat (230) on both upper and lower sides, and the inner fixing hole (250) passes through the two sets of limiting latch wings and passes through the interior of the upper positioning insert (180), the interior of the first inner insert seat (200), the interior of the second inner insert seat (210) and the interior of the bottom insert seat (230); The interior of the drilling insert (140) is a hollow structure, and a plurality of groups of positioning inserts are provided inside the drilling insert (140) for mutually engaging a plurality of groups of inner limiting grooves (220) and limiting bottom grooves (240).

2. A drill bit for improving hole quality according to claim 1, characterized in that: A plurality of groups of drilling heads (160) for drilling and planing the bottom of the holes are provided at the bottom of the plurality of groups of drilling heads (140), and an insert core (170) for transmitting driving force to the driving shaft (100) is provided on the outer side of the lower end of the driving shaft (100).

3. A drill bit for improving hole quality according to claim 2, characterized in that: The insert core (170) is provided with a plurality of groups of internal fixing holes (250) on both upper and lower sides for connecting and fixing with the interior of the upper positioning insert (180) and the interior of the bottom insert seat (230), and the outer side of the upper end of the insert core (170) is provided with a group of upper positioning inserts (180) for limiting the internal position of the drilling insert head (140).

4. A drill bit for improving hole quality according to claim 3, characterized in that: The lower end of the upper positioning insert (180) is provided with an inner seat 1 (200) and an inner seat 2 (210) for engaging with the inside of the drilling insert (140), and the lower end of the inner seat 2 (210) is provided with a group of bottom inserts (230) for preventing the bottom of the drilling insert (140) from being limited.

5. A drill bit for improving hole quality according to claim 4, characterized in that: The bottom embedding seat (230) is provided with a plurality of groups of bottom limiting grooves (240) for mutually embedding the inside of the drilling insert (140), and the inner embedding seat 1 (200), the inner embedding seat 2 (210) and the upper positioning insert (180) are provided with a plurality of groups of inner limiting grooves (220) for multi-point embedding and limiting the drilling insert (140).

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