Reaming and righting drill bit

Abstract

The utility model provides a reaming and righting drill bit, and relates to the technical field of drill bits. A chambering righting drill bit comprises a transmission rod and a chambering righting mechanism arranged at the bottom of the transmission rod, a fixing rod is arranged at the bottom of the chambering righting mechanism, the fixing rod and the transmission rod are coaxial, and a drill bit body is arranged at the bottom of the fixing rod. The outer side wall of the transmission rod is fixedly sleeved with an anti-blocking drill bit, the anti-blocking drill bit is conical, and the end, with the smaller outer diameter, of the anti-blocking drill bit faces upwards. By the adoption of the reamer, the risk of drill jamming in the process that the reamer bit is pulled out outwards can be reduced, the reamer bit can be conveniently pulled out of a drill hole, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a hole-expanding and straightening drill bit. Background Art

[0002] In order to prevent the existing reaming drill bit from not drilling along the original hole trajectory during the reaming process, thereby causing the drill bit to deviate and cause the drill bit to be scrapped or reworked, a reaming straightening mechanism is generally installed on the reaming drill bit. However, when the reaming drill bit is pulled out after drilling, debris such as stones in the drill hole falls on the top of the reaming straightening mechanism, so the reaming drill bit is easily stuck during the process of pulling out, affecting the removal of the reaming drill bit. Utility Model Content

[0003] The purpose of the utility model is to provide a hole-reaming and straightening drill bit, which can propose a solution to the deficiencies of the prior art, reduce the risk of the drill being stuck during the process of pulling the hole-reaming drill bit outward, facilitate the removal of the hole-reaming drill bit from the drill hole, and improve construction efficiency.

[0004] The technical solution adopted by the utility model is:

[0005] An embodiment of the present application provides a hole-expanding and straightening drill bit, including a transmission rod and a hole-expanding and straightening mechanism arranged at the bottom of the transmission rod, a fixed rod is provided at the bottom of the hole-expanding and straightening mechanism, the fixed rod is coaxial with the transmission rod, and a drill bit is provided at the bottom of the fixed rod; an anti-stuck drill bit is provided on the fixed sleeve of the outer wall of the transmission rod, and the anti-stuck drill bit is conical in shape and the end with a smaller outer diameter of the anti-stuck drill bit faces upward.

[0006] Furthermore, in some embodiments of the present invention, the bottom of the anti-stuck drill bit is connected to the top of the hole expansion and straightening mechanism, the hole expansion and straightening mechanism is cylindrical and coaxial with the transmission rod; the diameter of the hole expansion and straightening mechanism is the same as the maximum diameter of the bottom of the anti-stuck drill bit.

[0007] Furthermore, in some embodiments of the present invention, the outer side wall of the hole expansion and straightening mechanism and the outer side wall of the anti-sticking drill bit are both provided with a diamond particle layer.

[0008] Furthermore, in some embodiments of the present invention, the hole-reaming and straightening mechanism comprises a hole-reaming and straightening plate in a cylindrical shape, and the hole-reaming and straightening plate is fixedly sleeved on the transmission rod and is coaxial with the transmission rod.

[0009] Furthermore, in some embodiments of the present invention, the hole reaming and straightening mechanism also includes a plurality of horizontally arranged fixing rods, the plurality of fixing rods are embedded in the hole reaming and straightening disk and are evenly spaced along the circumference of the hole reaming and straightening disk, and one end of the fixing rod facing the transmission rod is connected to the transmission rod.

[0010] Furthermore, in some embodiments of the present invention, an external thread is provided on the top of the transmission rod.

[0011] Furthermore, in some embodiments of the present invention, a drill casing is provided between the fixing rod and the drill bit, the drill casing is fixed to the bottom of the fixing rod, and the drill bit is fixed to the bottom of the drill casing.

[0012] Furthermore, in some embodiments of the present invention, a diamond particle layer is provided on the outer side wall of the drill casing.

[0013] Furthermore, in some embodiments of the present invention, a screw hole is provided on the top of the drill casing, an outer side wall at the bottom of the fixing rod is provided with an external thread, and the fixing rod is threadedly connected to the drill casing.

[0014] Furthermore, in some embodiments of the present invention, the outer diameter of the drill casing is smaller than the outer diameter of the drill bit.

[0015] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0016] The utility model provides a hole-reaming and straightening drill bit, comprising a transmission rod and a hole-reaming and straightening mechanism arranged at the bottom of the transmission rod, a fixing rod is arranged at the bottom of the hole-reaming and straightening mechanism, the fixing rod is coaxial with the transmission rod, and a drill bit is arranged at the bottom of the fixing rod; an anti-stuck drill bit is arranged at the fixing sleeve of the outer wall of the transmission rod, and the anti-stuck drill bit is conical and the end with a smaller outer diameter of the anti-stuck drill bit faces upward. It can reduce the risk of drill sticking in the process of pulling out the hole-reaming drill bit, facilitates the pulling out of the hole-reaming drill bit from the drill hole, and improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A front view of a hole-reaming and centering drill bit provided in an embodiment of the utility model;

[0019] Figure 2 A transverse cross-sectional view of the position of the hole expansion and straightening mechanism provided in an embodiment of the utility model.

[0020] Icons: 1- transmission rod; 2- anti-stuck drill bit; 3- hole expansion and straightening mechanism; 4- fixing rod; 5- drill bit; 6- drill casing; 31- hole expansion and straightening plate; 32- reinforcement rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", etc. appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In addition, the use of terms such as "horizontal" and "vertical" does not mean that the components must be absolutely horizontal or vertical, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Example

[0028] Please refer to Figure 1-Figure 2 The present embodiment provides a hole-reaming and straightening drill bit, comprising a transmission rod 1 and a hole-reaming and straightening mechanism 3 disposed at the bottom of the transmission rod 1. A fixing rod 4 is disposed at the bottom of the hole-reaming and straightening mechanism 3. The fixing rod 4 is coaxial with the transmission rod 1. A drill bit 5 is disposed at the bottom of the fixing rod 4. An anti-stuck drill bit 2 is disposed at the outer wall fixing sleeve of the transmission rod 1. The anti-stuck drill bit 2 is conical and the end with a smaller outer diameter of the anti-stuck drill bit 2 faces upward. The bottom of the anti-stuck drill bit 2 is connected to the top of the hole-reaming and straightening mechanism 3. The hole-reaming and straightening mechanism 3 is cylindrical and coaxial with the transmission rod 1. The diameter of the hole-reaming and straightening mechanism 3 is the same as the maximum diameter of the bottom of the anti-stuck drill bit 2.

[0029] In actual use, the transmission rod 1 is installed on the drill rod, and the rotation of the drill rod drives the reaming and straightening drill bit to rotate as a whole to perform drilling operations. When drilling, the drill bit 5 is used for drilling, and the reaming and straightening mechanism 3 is used to straighten the reaming and straightening drill bit when drilling, so as to prevent the reaming and straightening drill bit from deviating when drilling. When the reaming and straightening drill bit is pulled out after drilling, since the anti-stuck drill bit 2 is located above the reaming and straightening mechanism 3 and the anti-stuck drill bit 2 is conical, even if impurities such as stones in the borehole fall onto the anti-stuck drill bit 2, the conical design facilitates the anti-stuck drill bit 2 to pass through the fallen impurities and be pulled out. While pulling out the reaming and straightening drill bit, the reaming and straightening drill bit can also be driven to rotate by the drill rod, so that the reaming and straightening drill bit can be pulled out of the borehole as a whole. In this way, the risk of the drill being stuck in the process of pulling out the reaming drill bit can be reduced, and the reaming drill bit can be pulled out of the borehole conveniently, thereby improving construction efficiency.

[0030] like Figure 1-Figure 2 As shown, in some embodiments of the present invention, the outer wall of the hole expansion and straightening mechanism 3 and the outer wall of the anti-sticking drill bit 2 are both provided with a diamond particle layer.

[0031] The utility model provides a diamond particle layer, and drives the hole-reaming and straightening drill bit to rotate through the drill rod while pulling out the hole-reaming and straightening drill bit. At this time, impurities such as fallen stones can be ground by the hole-reaming and straightening mechanism 3 and the diamond particle layer on the outer wall of the anti-sticking drill bit 2, making it easy to pull out the hole-reaming and straightening drill bit.

[0032] like Figure 1-Figure 2 As shown, in some embodiments of the present invention, the reaming and straightening mechanism 3 includes a cylindrical reaming and straightening plate 31, which is fixedly sleeved on the transmission rod 1 and coaxial with the transmission rod 1. When in use, the reaming and straightening plate 31 abuts against the inner wall of the borehole to reduce the risk of the drill bit 5 being deviated during drilling.

[0033] The hole reaming and straightening mechanism 3 further includes a plurality of horizontally arranged reinforcing rods 32, which are embedded in the hole reaming and straightening plate 31 and are evenly spaced along the circumference of the hole reaming and straightening plate 31, and one end of the reinforcing rod 32 facing the transmission rod 1 is connected to the transmission rod 1. The reinforcing rod 32 can be made of steel bars, and the structural strength of the hole reaming and straightening plate 31 can be improved by providing the reinforcing rod 32, and the connection stability between the hole reaming and straightening plate 31 and the transmission rod 1 can be improved.

[0034] like Figure 1 As shown, in some embodiments of the present invention, an external thread is provided on the top of the transmission rod 1. By providing the external thread on the top of the transmission rod 1, it is convenient to connect the transmission rod 1 with the drill rod by threaded connection, and it is also convenient to remove the transmission rod 1 from the drill rod.

[0035] like Figure 1-Figure 2 As shown, in some embodiments of the utility model, a drill casing 6 is provided between the fixed rod 4 and the drill bit 5, the drill casing 6 is fixed to the bottom of the fixed rod 4, and the drill bit 5 is fixed to the bottom of the drill casing 6. A diamond particle layer is provided on the outer wall of the drill casing 6. A screw hole is provided on the top of the drill casing 6, and an external thread is provided on the outer wall of the bottom of the fixed rod 4, and the fixed rod 4 is threadedly connected to the drill casing 6. The outer diameter of the drill casing 6 is smaller than the outer diameter of the drill bit 5. The utility model is convenient for protecting the drill bit 5 through the drill casing 6 by providing the drill casing 6, and the fixed rod 4 is threadedly connected to the drill casing 6, so that the drill casing 6 and the drill bit 5 are convenient to disassemble and replace. The drill bit of this embodiment is a fully diamond-encrusted reaming drill bit, which avoids shaking during reaming and causing the drill hole to deviate and tilt, thereby improving the verticality of the drill hole.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments and that the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application.

[0037] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present application is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. For those skilled in the art, the utility model can have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A hole-reaming and straightening drill bit, comprising a transmission rod and a hole-reaming and straightening mechanism arranged at the bottom of the transmission rod, a fixing rod is arranged at the bottom of the hole-reaming and straightening mechanism, the fixing rod is coaxial with the transmission rod, and a drill bit is arranged at the bottom of the fixing rod; characterized in that: The fixing sleeve on the outer wall of the transmission rod is provided with an anti-stuck drill bit, the anti-stuck drill bit is conical and the end with a smaller outer diameter of the anti-stuck drill bit faces upward.

2. The hole-reaming and straightening drill bit according to claim 1, characterized in that: The bottom of the anti-stuck drill bit is connected to the top of the hole expansion and straightening mechanism, the hole expansion and straightening mechanism is cylindrical and coaxial with the transmission rod; the diameter of the hole expansion and straightening mechanism is the same as the maximum diameter of the bottom of the anti-stuck drill bit.

3. The hole-reaming and straightening drill bit according to claim 1, characterized in that: The outer side wall of the hole expansion and straightening mechanism and the outer side wall of the anti-sticking drill bit are both provided with a diamond particle layer.

4. The hole-reaming and straightening drill bit according to claim 1, characterized in that: The hole-reaming and straightening mechanism comprises a hole-reaming and straightening plate in a cylindrical shape, and the hole-reaming and straightening plate is fixedly sleeved on the transmission rod and is coaxial with the transmission rod.

5. The hole-reaming and straightening drill bit according to claim 4, characterized in that: The hole expansion and straightening mechanism also includes a plurality of horizontally arranged reinforcing rods, which are embedded in the hole expansion and straightening disk and are evenly spaced along the circumference of the hole expansion and straightening disk. One end of the reinforcing rod facing the transmission rod is connected to the transmission rod.

6. The hole-reaming and straightening drill bit according to claim 1, characterized in that: The top of the transmission rod is provided with an external thread.

7. The hole-reaming and straightening drill bit according to claim 1, characterized in that: A drill casing is provided between the fixing rod and the drill bit. The drill casing is fixed to the bottom of the fixing rod, and the drill bit is fixed to the bottom of the drill casing.

8. The hole-reaming and straightening drill bit according to claim 7, characterized in that: The outer side wall of the drill casing is provided with a diamond particle layer.

9. The hole-reaming and straightening drill bit according to claim 7, characterized in that: A screw hole is arranged on the top of the drill casing, an outer side wall of the bottom of the fixing rod is arranged with an external thread, and the fixing rod is threadedly connected with the drill casing.

10. The hole-reaming and straightening drill bit according to claim 7, characterized in that: The outer diameter of the drill casing is smaller than the outer diameter of the drill bit.

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