Drill bit for engineering geological drilling

Abstract

The invention relates to the technical field of geological exploration, in particular to a drill bit for engineering geological drilling, which comprises a bearing assembly, a drill bit shell, a connecting sleeve arranged at the end part of the drill bit shell and communicated with the interior of the drill bit shell, and a hollow drill rod arranged on the end surface of the connecting sleeve; a plurality of water outlets are formed in the outer wall of the drill bit shell in a circumferential array mode. The strengthening assembly comprises a solid cone rotationally arranged in the drill bit shell, a connecting ball head is arranged at the end of an inner cavity of the drill bit shell, and a connecting base matched with the connecting ball head is arranged on the end face of the solid cone; when the drill bit shell rotates, on the basis that the drill bit body can be cooled through cooling water, a reinforcing assembly is arranged in the drill bit shell, the reinforcing assembly is substantially a solid cone, the cone deflects in the drill bit, and therefore the structural strength of the drill bit is improved; and the problems in the prior art are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration, in particular to a drill bit for engineering geological drilling. Background Art

[0002] Geological exploration can be broadly understood as geological work. It is based on the needs of economic construction, national defense construction and scientific and technological development, using geological exploration methods such as surveying and mapping, geophysical exploration, geochemical prospecting, drilling, pit exploration, sampling testing, geological remote sensing, etc., to investigate and study the geological conditions such as rocks, stratigraphic structures, minerals, groundwater and landforms in a certain area. During geological exploration, geological samples are often taken for analysis, and probes are used for sampling.

[0003] At present, the drill bits widely used in the field of engineering geological drilling face a common problem when performing underground operations. Due to the continuous contact and friction between the drill bit and underground soil, rocks and other materials during high-speed rotation, this physical effect will cause the surface temperature of the drill bit to rise sharply. High temperature will not only accelerate the wear of the drill bit material, but also may cause thermal fatigue of the drill bit structure, and eventually lead to premature damage of the drill bit. This damage not only affects the drilling efficiency, but also increases the cost of maintenance and replacement.

[0004] The Chinese patent application number 202122543178.9 authorizes the disclosure of a drill bit for engineering geological drilling, and then discloses a drill bit body, the drill bit body is arranged in a cone shape, a water storage chamber is opened inside the drill bit body, a water inlet is opened through the middle of the upper surface of the drill bit body, drainage holes are opened on the inner walls on both sides of the water storage chamber, hollow cylinders are fixedly connected to the inner walls on both sides of the water storage chamber, the inner cavity of the hollow cylinder is connected to the inner cavity of the drainage hole, the inner cavity of the hollow cylinder is filled with a sponge layer, and the outer wall of the sponge layer is bonded to the inner wall of the hollow cylinder.

[0005] The patent rapidly cools the surface of the drill body by throwing out the cooling water in the water storage chamber when the drill body rotates at high speed. However, this implementation has certain disadvantages, especially because the water storage chamber needs to be set inside the drill body to solve the above problem, and the structural strength of the hollow drill body will be greatly affected, which is more prone to deformation than conventional drills, thus affecting its service life. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a drill bit for engineering geological drilling, comprising a bearing assembly, including a drill bit shell, a connecting sleeve arranged at the end of the drill bit shell and connected to the interior thereof, and a hollow drill rod arranged on the end face of the connecting sleeve; wherein the outer wall of the drill bit shell has a plurality of water outlets in a circumferential array; and a strengthening assembly, comprising a solid cone rotatably arranged inside the drill bit shell.

[0008] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, a connecting ball head is provided on the inner cavity end of the drill bit shell, and a connecting seat that cooperates with the connecting ball head is provided on the end face of the solid cone; wherein, when the drill bit shell rotates, the solid cone will be deflected by the centrifugal force inside it.

[0009] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, the solid cone is provided with a fixed disk at one end away from the connecting seat, and a buffer pad is arranged in a circumferential array on the outer wall of the fixed disk, and a buffer channel is opened on the end face of the fixed disk.

[0010] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, there are a number of guide vanes in a circumferential array on the inner wall of the buffer channel for accelerating the rotation of the solid cone.

[0011] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, it also includes a sealing assembly, including a lower blocking member and an upper pressure member hinged thereto; wherein the lower blocking member includes a first connecting plate and a plug arranged on the outer wall of the first connecting plate; in an initial state, the plug is located in the water outlet.

[0012] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, the upper pressing member includes a second connecting plate, and a certain gap is left between the outer wall of the second connecting plate and the inner cavity wall of the drill bit housing.

[0013] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, a trigger block is provided at one end of the second connecting plate, and a receiving groove is provided at one end of the trigger block close to the inner wall of the drill bit housing, and an elastic member is provided in the receiving groove.

[0014] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, guide blades are arranged in the connecting sleeve.

[0015] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, a water guide plate is integrally formed in the inner cavity of the hollow drill rod.

[0016] As a preferred solution of the drill bit for engineering geological drilling described in the present invention, the outer wall of the drill bit housing is provided with drill teeth, and a wire mesh plate is provided in each of the water outlets.

[0017] Beneficial effects of the present invention: On the basis of being able to cool the drill bit body by cooling water, the present invention arranges a reinforcing component inside the drill bit, which is essentially a solid cone. This cone will deflect inside the drill bit, thereby improving the structural strength of the drill bit itself and effectively solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic cross-sectional view of the load-bearing component structure in the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the strengthening component in the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the blocking component in the present invention. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1, reference Figure 1 and Figure 2, which is the first embodiment of the present invention, provides a drill bit for engineering geological drilling. On the basis of being able to cool the drill bit body by cooling water, a reinforcing component is arranged inside the drill bit. The reinforcing component 200 is essentially a solid cone 201. This cone will deflect inside the drill bit, thereby improving the structural strength of the drill bit itself.

[0026] Specifically, the bearing assembly 100 includes a drill bit housing 101, a connecting sleeve 102 disposed at the end of the drill bit housing 101 and connected to the interior thereof, and a hollow drill rod 103 disposed on the end face of the connecting sleeve 102; wherein the outer wall of the drill bit housing 101 has a plurality of water outlets 101a in a circumferential array; and a strengthening assembly 200, including a solid cone 201 rotatably disposed inside the drill bit housing 101.

[0027] The upper end of the hollow drill rod 103 is connected to the water pipe through a rotating connector, so the hollow drill rod 103 can guide the cooling water in the water pipe into the interior of the drill bit housing 101 .

[0028] In summary, in the specific use process, when the drill housing 101 is controlled to rotate, water can be injected into the hollow drill rod 103. The cooling water will pass through the hollow drill rod 103 and finally enter the drill housing 101 through the connecting sleeve 102, and be discharged through the water outlet 101a.

[0029] During the high-speed rotation of the drill housing 101, the solid cone 201 inside the drill housing 101 will also deflect inside the drill housing 101. Figure 2 It can be seen that the volume size of the solid cone 201 is slightly smaller than the inner cavity volume of the drill housing 101. The existence of the solid cone 201 can not only provide additional support and reduce the bending or deformation of the drill housing 101 during the drilling process, but the solid cone 201 will also serve as a trigger (this will be described in detail in subsequent embodiments).

[0030] It should be noted that when the drill housing 101 rotates at high speed, the eccentric solid cone 201 will generate centrifugal force, which can help offset the centrifugal force generated by the high-speed rotation of the drill housing 101, thereby reducing the vibration of the drill housing 101 and improving the dynamic balance of the drill housing 101.

[0031] Example 2, reference Figure 1~Figure 4 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment further optimizes the structure of the solid cone 201.

[0032] Specifically, a connecting ball head is provided at the inner end of the drill housing 101, and a connecting seat 201a is provided at the end surface of the solid cone 201 to cooperate with the connecting ball head; when the drill housing 101 rotates, the solid cone 201 will be deflected by the centrifugal force inside. The connection between the connecting ball head and the connecting seat 201a ensures that the solid cone 201 deflects without being separated from the drill housing 101.

[0033] The solid cone 201 is provided with a fixed disk 202 at one end away from the connecting seat 201a, and a buffer pad 202a is arranged in a circumferential array on the outer wall of the fixed disk 202, and a buffer channel 202b is opened on the end surface of the fixed disk 202. The buffer channel 202b will provide a certain buffer to the liquid just entering the drill housing 101, and the material of the buffer pad 202a is rubber material.

[0034] The inner wall circumferential array of the buffer channel 202b has a plurality of guide vanes 203 for accelerating the rotation of the solid cone 201. The guide vanes 203 cooperate with the buffer channel 202b to accelerate the deflection of the solid cone 201.

[0035] In summary, when the coolant enters the drill housing 101, the solid cone 201 will not only be deflected by the rotation of the drill housing 101, but the solid cone 201 will also be affected by the force between the cooling water and the guide vane 203, pushing the solid cone 201 to move faster.

[0036] Example 3, reference Figure 1~Figure 4 , which is the third embodiment of the present invention, is different from the previous embodiment in that a blocking component 300 is provided to avoid clogging of the water outlet 101a.

[0037] Specifically, it also includes a sealing assembly 300, including a lower blocking member 301 and an upper pressure member 302 hinged thereto; wherein, the lower blocking member 301 includes a first connecting plate 301a and a plug 301a-1 arranged on the outer wall of the first connecting plate 301a; in the initial state, the plug 301a-1 is located in the water outlet 101a.

[0038] It should be noted that the number of the blocking components 300 is in one-to-one correspondence with the water outlets 101 a , that is, inside the drill housing 101 , a blocking component 300 is disposed at each water outlet 101 a to prevent it from being blocked.

[0039] The upper pressing member 302 includes a second connecting plate 302a, and a certain gap is left between the outer wall of the second connecting plate 302a and the inner wall of the drill housing 101. When the second connecting plate 302a deflects, the first connecting plate 301a will be lifted up, and the plug 301a-1 will also be separated from the water outlet 101a.

[0040] A trigger block 302b is disposed at one end of the second connecting plate 302a, and a receiving groove 302b-1 is disposed at one end of the trigger block 302b close to the inner wall of the drill housing 101, and an elastic member 302b-2 is disposed in the receiving groove 302b-1. The elastic member 302b-2 is a compression spring, and each time the trigger block 302b is pressed to drive the second connecting plate 302a to deflect, it has a certain reset effect. The receiving groove 302b-1 can ensure that the elastic member 302b-2 does not deviate in position.

[0041] A guide blade 102a is provided in the connecting sleeve 102, and a water guide plate 103a is integrally formed in the inner cavity of the hollow drill rod 103. The guide blade 102a can further guide the cooling water when rotating, thereby ensuring that the inside of the drill housing 101 is always filled with cooling water.

[0042] The outer wall of the drill housing 101 is provided with drill teeth 101b, and each water outlet 101a is provided with a wire mesh plate 101a-1. The edge of the wire mesh plate 101a-1 is fixedly connected to the inner wall of the water outlet 101a, and the arrangement of the wire mesh plate 101a-1 can prevent the soil and ore outside the drill housing 101 from squeezing and blocking the water outlet 101a. The drill teeth 101b are used to ensure the overall drilling work of the drill housing 101, which has been fully documented in the prior art and will not be elaborated on here.

[0043] In summary, combined with the description in the above embodiments, when the solid cone 201 is deflected by the rotation of the drill bit housing 101 and the liquid flow rate, it will also intermittently and continuously strike the trigger block 302b included in each blocking assembly 300 through the buffer pad 202a on the fixed plate 202.

[0044] This will press the second connecting plate 302a to drive the first connecting plate 301a to deflect, so that the plug 301a-1 can enter and exit the water outlet 101a. When the plug 301a-1 is away from the water outlet 101a, the cooling water will be thrown out from the water outlet 101a. If the water outlet 101a is blocked, an air cavity will be formed at the water outlet 101a. The movement of the plug 301a-1 will squeeze the air in the plug 301a-1 to avoid the water outlet 101a from being blocked, thereby ensuring the smooth operation of the water outlet.

[0045] It should be noted that Figure 2 The state shown in FIG. 2 is that the solid cone 201 is in an absolute equilibrium state, but under the influence of gravity, the solid cone 201 will tilt to one side in the actual state.

[0046] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0047] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0048] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A drill bit for engineering geological drilling, characterized in that: include, The bearing assembly (100) comprises a drill housing (101), a connecting sleeve (102) arranged at the end of the drill housing (101) and communicating with the interior thereof, and a hollow drill rod (103) arranged at the end surface of the connecting sleeve (102); wherein the outer wall of the drill housing (101) has a plurality of water outlets (101a) arranged in a circumferential array; and, The strengthening component (200) comprises a solid cone (201) rotatably arranged inside the drill housing (101).

2. The drill bit for engineering geological drilling according to claim 1, characterized in that: A connecting ball head is provided at the inner cavity end of the drill housing (101), and a connecting seat (201a) that cooperates with the connecting ball head is provided at the end surface of the solid cone (201); wherein, when the drill housing (101) rotates, the solid cone (201) will be deflected by the centrifugal force inside the solid cone (201).

3. The drill bit for engineering geological drilling according to claim 2, characterized in that: The solid cone (201) is provided with a fixed disk (202) at one end away from the connecting seat (201a), and a buffer pad (202a) is arranged in a circumferential array on the outer wall of the fixed disk (202), and a buffer channel (202b) is opened on the end surface of the fixed disk (202).

4. The drill bit for engineering geological drilling according to claim 3, characterized in that: The inner wall of the buffer channel (202b) is provided with a plurality of guide vanes (203) in a circumferential array, which are used to accelerate the rotation of the solid cone (201).

5. The drill bit for engineering geological drilling according to claim 4, characterized in that: It also includes a blocking assembly (300), including a lower blocking member (301) and an upper pressure member (302) hingedly connected thereto; wherein the lower blocking member (301) includes a first connecting plate (301a) and a plug (301a-1) arranged on the outer wall of the first connecting plate (301a); in an initial state, the plug (301a-1) is located in the water outlet (101a).

6. The drill bit for engineering geological drilling according to claim 5, characterized in that: The upper pressing piece (302) includes a second connecting plate (302a), and a certain gap is left between the outer wall of the second connecting plate (302a) and the inner wall of the drill housing (101).

7. The drill bit for engineering geological drilling according to claim 6, characterized in that: A trigger block (302b) is provided at one end of the second connecting plate (302a), and a receiving groove (302b-1) is provided at one end of the trigger block (302b) close to the inner wall of the drill housing (101), and an elastic member (302b-2) is provided in the receiving groove (302b-1).

8. The drill bit for engineering geological drilling according to claim 1, characterized in that: A flow guide blade (102a) is arranged inside the connecting sleeve (102).

9. The drill bit for engineering geological drilling according to claim 1, characterized in that: The inner cavity of the hollow drill rod (103) is integrally formed with a water guide plate (103a).

10. The drill bit for engineering geological drilling according to claim 5, characterized in that: The outer wall of the drill bit housing (101) is provided with drill teeth (101b), and each of the water outlets (101a) is provided with a wire mesh plate (101a-1).

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