Guide drilling device of horizontal twist drill

Abstract

The utility model relates to a horizontal twist drill guide drilling device which comprises a center shaft, a connector pipe, a supporting plate, a helical tooth seat and a guide rib ring. The connector pipe is coaxially connected with the center shaft, and a first hard tool bit is arranged on the conical portion of the end, away from the connector pipe, of the center shaft. The center shaft vertically penetrates through the middle of the supporting plate, and a groove is formed in the supporting plate. The helical tooth holder is obliquely arranged relative to the central shaft, and the two ends of the helical tooth holder are connected with the central shaft and the supporting plate respectively; a second hard tool bit is arranged on the helical tooth holder; the guide rib ring is in a circular ring shape and located on the periphery of the connector pipe, and a rear rib plate is arranged between the guide rib ring and the supporting plate. According to the drilling device, the structure of the drilling device is improved, on the premise that the drilling function of the drilling device is guaranteed, the hole wall of a formed hole is used for guiding through the structure of the drilling device, deflection of the drilling device in the drilling process is greatly reduced, and construction precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to a drill, in particular to a horizontal spiral drill guide drill. Background Art

[0002] The horizontal auger is used to achieve drilling through a spiral structure. It can continuously cut and extract soil, has a fast hole-making speed, and is suitable for soil geology.

[0003] In the process of drilling with a horizontal spiral drill, the drilling head is prone to deflection during operation. In order to solve the above problem, the prior art, such as the Chinese invention patent application with publication number "CN118187676A" and titled "A directional hole-expanding spiral drilling machine and its use method", discloses the following technical solution: "A directional hole-expanding spiral drilling machine, including a hydraulically driven box frame, a movable plate is movably arranged on the driving side of the hydraulically driven box frame, a transmission box is fixedly arranged on the outer side of the movable plate, a transmission frame is fixedly arranged on the bottom side of the transmission box, a reduction motor body is fixedly arranged on the inner side of the transmission frame, and the transmission end of the reduction motor body A driving wheel is connected, a driven wheel is rotatably arranged on the top side of the outer end of the transmission frame, and the driven wheel and the driving wheel are connected through a transmission belt. The driving wheel, the driven wheel and the transmission belt are all located in the transmission box, and also include a drill rod, a spiral drill piece and a ring; the drill rod is rotatably arranged on the bottom side of the outer end of the transmission frame; wherein the top end of the drill rod is connected to the driving wheel; the spiral drill piece is sleeved and welded on the drill rod; the ring is arranged at the bottom of the hydraulic drive box frame through a connecting structure; wherein the ring corresponds to the drill rod, and the ring is used to locate the drill hole to be expanded.

[0004] The above scheme has the advantages of setting a circular ring and a connecting structure in advance at the previous hole on the ground, and docking its bottom with the circular ring when placing the hydraulic drive box frame, so that the drill bit at the bottom of the drill rod corresponds to the circular ring and the hole to be expanded, and the drill bit accurately enters the hole to expand the hole, thereby solving the problem that there is a certain height difference between the drill bit and the pre-opened hole, there is an error in the staff's visual observation, and the drilling cannot be accurately aligned with the middle area of ​​the hole.

[0005] Although the above scheme can achieve hole alignment to a certain extent, the guidance of the drilling head is relatively lacking during the drilling process, and the deviation phenomenon will still occur only by aligning the hole. Utility Model Content

[0006] The purposes of this utility model are:

[0007] A horizontal spiral drill guide drill is designed, and the structure of the drill is improved. On the premise of ensuring the drilling function of the drill, the hole wall of the formed hole is used to form a guide through its own structure, which greatly reduces the deflection of the drill during the drilling process and ensures the construction accuracy.

[0008] To achieve the above object, the utility model provides the following technical solutions:

[0009] A horizontal spiral drill guiding driller, comprising a central shaft, a joint pipe, a support plate, an inclined tooth seat and a guiding rib ring; the joint pipe is coaxially connected with the central shaft, and a first hard cutting tool head is arranged on the conical part at one end of the central shaft away from the joint pipe; the central shaft vertically penetrates through the middle of the support plate, and a groove is arranged on the support plate; the inclined tooth seat is arranged obliquely relative to the central shaft, and both ends of the inclined tooth seat are respectively connected with the central shaft and the support plate; a second hard cutting tool head is arranged on the inclined tooth seat; the guiding rib ring is annular and located outside the joint pipe, and a rear rib plate is arranged between the guiding rib ring and the support plate.

[0010] Further, the central shaft is in the shape of a round rod, and the conical part is conical and coaxially arranged with the central shaft.

[0011] Further, the first hard cutting tool head is embedded on the circumferential surface of the conical part, and the first hard cutting tool heads are arranged equidistantly along the generatrix of the conical part.

[0012] Further, the first hard cutting tool heads are arranged in a circumferential array relative to the conical part, and the ends of the first hard cutting tool heads are round heads.

[0013] Further, the inclined tooth seat is in the shape of a straight rod, and the inclined tooth seat is arranged in a circumferential array relative to the central shaft.

[0014] Further, the connection position between the inclined tooth seat and the central shaft is located near the conical part; the connection position between the inclined tooth seat and the support plate is located at the edge of the support plate.

[0015] Further, the second hard cutting tool head is embedded on the outer side surface of the inclined tooth seat, the second hard cutting tool heads are arranged in a linear array along the length direction of the inclined tooth seat; and the ends of the second hard cutting tool heads are conical heads.

[0016] Further, the support plate is in the shape of a thin plate, and the grooves are arranged in a circumferential array relative to the central shaft.

[0017] Further, the rear rib plate is connected with the central shaft and the joint pipe, and the rear rib plates are arranged in a circumferential array relative to the joint pipe; the rear rib plate is in the shape of a thin plate.

[0018] Further, the guiding rib ring is connected with one end of the rear rib plate far away from the support plate; a gap is left between the guiding rib ring and the joint pipe; and the outer diameter of the guiding rib ring is the same as the outer diameter of the support plate.

[0019] The beneficial effects of the utility model are:

[0020] A horizontal spiral drill guide drill has an improved structure. A central axis, a joint tube, a support plate, a bevel gear seat, a first hard cutter head, a second hard cutter head, a rear rib plate and a guide rib ring are provided. On the premise that the first hard cutter head and the second hard cutter head ensure the drilling function of the drill, the outer contour of the support plate and the guide rib ring, that is, the structure of the drill itself, is used to form a guide using the hole wall of a formed hole, thereby improving the coaxiality of the drilling direction and the formed hole, thereby greatly reducing the deflection of the drill during the drilling process, thereby ensuring construction accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a three-dimensional diagram of the overall structure of a horizontal spiral drill guide drill.

[0022] Figure 2 This is a stereoscopic view of the overall structure of a horizontal spiral drill guide drill of the utility model from another angle.

[0023] Figure 3 This is a stereoscopic diagram of the overall structure of the horizontal spiral drill guide drill of the utility model from another angle.

[0024] The accompanying drawings are marked as follows:

[0025] 1. Center axis; 11. Cone; 2. Connector tube; 3. Support plate; 31. Groove; 4. Bevel gear seat; 5. First hard cutter head; 51. Round head; 6. Second hard cutter head; 61. Cone head; 7. Rear rib plate; 8. Guide rib ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] refer to Figures 1 to 3 A horizontal auger guide drill comprises a central shaft 1, a joint pipe 2, a support plate 3, a bevel gear seat 4 and a guide rib ring 8; the horizontal auger guide drill can be used on a horizontal auger to perform drilling operations.

[0028] The joint pipe 2 is coaxially connected to the central axis 1, and an internal hexagonal or threaded member is provided at the end of the joint pipe 2 for connection with the drill rod at the rear; a first hard cutter head 5 is provided on the tapered portion 11 at one end of the central axis 1 away from the joint pipe 2; the first hard cutter head 5 is used for the initial cutting of soil or rock during the drilling process.

[0029] The central axis 1 vertically passes through the middle of the support plate 3, and a groove 31 is provided on the support plate 3; the groove 31 is communicated with the side of the support plate 3, and the groove 31 is used for both weight reduction and chip removal.

[0030] The side circumferential surface of the support plate 3 contacts the inner wall of the formed hole and can be used for guidance during the drilling process.

[0031] The helical gear seat 4 is tilted relative to the central axis 1, and the two ends of the helical gear seat 4 are respectively connected to the central axis 1 and the support plate 3; the tilted helical gear seat 4 is beneficial to the force in the forward direction during drilling.

[0032] A second hard cutter head 6 is arranged on the bevel gear seat 4; the second hard cutter head 6 is used for secondary cutting of soil or rock during the drilling process.

[0033] The guide rib ring 8 is in a circular shape and is located on the periphery of the joint pipe 2. The outer side surface of the guide rib ring 8 contacts the inner wall of the formed hole and can be used for guidance during the drilling process. A rear rib plate 7 is arranged between the guide rib ring 8 and the support plate 3. The rear rib plate 7 is used to strengthen the structure and fix the guide rib ring 8 at the same time.

[0034] The central shaft 1 is in the shape of a round rod, the cone 11 is in the shape of a cone and is coaxially arranged with the central shaft 1 , and the tip of the cone 11 faces the end away from the joint pipe 2 .

[0035] The first hard cutter bits 5 are embedded on the circumferential surface of the cone 11, and the first hard cutter bits 6 are arranged equidistantly along the generatrix of the cone 11, so as to realize uniform and high-frequency cutting of soil or rock.

[0036] The first hard cutter head 5 is arranged in a circular array relative to the cone 11 . The material of the first hard cutter head 5 is a hard wear-resistant alloy. The end of the first hard cutter head 5 is a round head 51 , which can adapt to a harder geological environment and ensure the service life of the first hard cutter head 5 .

[0037] The bevel gear seats 4 are in the shape of a straight rod, and are arranged in a circular array relative to the central axis 1, so as to achieve uniform and high-frequency cutting of soil or rock.

[0038] The connection between the helical gear seat 4 and the central axis 1 is located near the cone 11; the connection between the helical gear seat 4 and the support plate 3 is located at the edge of the support plate 3. The angle between the helical gear seat 4 and the central axis 1 is greater than the inclination of the generatrix of the cone 11, thereby achieving a rapid hole expansion effect.

[0039] The second hard cutter head 6 is embedded in the outer surface of the bevel gear seat 4. The material of the second hard cutter head 6 is a hard wear-resistant alloy. The second hard cutter head 6 is arranged in a linear array along the length direction of the bevel gear seat 4 to achieve uniform and high-frequency cutting of soil or rock; and the end of the second hard cutter head 6 is a cone head 61.

[0040] The support plate 3 is in the shape of a thin plate, and the grooves 31 are arranged in a circular array relative to the central axis 1 for rapid chip removal to prevent the chips from affecting the cutting and drilling.

[0041] The rear rib plate 7 is connected to the central axis 1 and the joint pipe 2, and the rear rib plate 7 is arranged in a circular array relative to the joint pipe 2; the rear rib plate 7 is in the shape of a thin plate, which enhances the overall structural strength of the drill.

[0042] The guide rib ring 8 is connected to one end of the rear rib plate 7 away from the support plate 3; a gap is left between the guide rib ring 8 and the joint pipe 2; and the outer diameter of the guide rib ring 8 is the same as the outer diameter of the support plate 3, and the guide rib ring 8 is used for guiding.

[0043] The working principle of the utility model is specifically as follows:

[0044] When drilling, the tip of the cone 11 of the central axis 11 of the rotating drill first contacts the soil to spread the soil, and then the soil is cut by the multiple first hard cutter heads 5 on the cone 11, and the cut debris is discharged through the groove 31 of the support plate 3 and the side of the rear rib plate 7, thereby achieving preliminary drilling;

[0045] Then, the soil is cut by the second hard cutter head 6 on the bevel tooth seat 4, so that the diameter of the drilled hole is increased, i.e., the hole is expanded; the cut debris is discharged through the groove 31 of the support plate 3 and the side of the rear rib plate 7, so that secondary drilling is achieved.

[0046] During the above-mentioned drilling process, the side circumferential surface of the support plate 3 and the guide rib ring 8 are always in contact with the inner circumferential wall of the drilled hole, so that the coaxiality of the center axis 1 and the formed hole can be maintained with the help of the formed hole, thereby guiding the drilling operation and greatly reducing the deflection of the center axis 1 to ensure the accuracy of the construction operation.

[0047] The above embodiments are used to further illustrate the present invention, but the present invention is not limited to these specific implementations. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. A horizontal spiral drill guide drill, characterized in that: The invention comprises a central axis (1), a joint pipe (2), a support plate (3), a bevel gear seat (4) and a guide rib ring (8); the joint pipe (2) is coaxially connected to the central axis (1), and a first hard cutter head (5) is arranged on a conical portion (11) of the central axis (1) at one end away from the joint pipe (2); the central axis (1) vertically passes through the middle of the support plate (3), and a groove (31) is arranged on the support plate (3); the bevel gear seat (4) is arranged obliquely relative to the central axis (1), and the two ends of the bevel gear seat (4) are respectively connected to the central axis (1) and the support plate (3); a second hard cutter head (6) is arranged on the bevel gear seat (4); the guide rib ring (8) is in a circular shape and is located on the periphery of the joint pipe (2), and a rear rib plate (7) is arranged between the guide rib ring (8) and the support plate (3).

2. A horizontal spiral drill guide drill according to claim 1, characterized in that: The central axis (1) is in the shape of a round rod, and the cone (11) is in the shape of a cone and is coaxially arranged with the central axis (1).

3. A horizontal spiral drill guide drill according to claim 2, characterized in that: The first hard cutter bits (5) are embedded on the circumferential surface of the cone portion (11), and the first hard cutter bits (5) are arranged at equal distances along the generatrix of the cone portion (11).

4. A horizontal spiral drill guide drill according to claim 3, characterized in that: The first hard cutter heads (5) are arranged in a circular array relative to the cone portion (11), and the ends of the first hard cutter heads (51) are round heads.

5. A horizontal spiral drill guide drill according to claim 4, characterized in that: The helical gear seats (4) are in the shape of a straight rod, and are arranged in a circular array relative to the central axis (1).

6. A horizontal spiral drill guide drill according to claim 5, characterized in that: The connection between the helical gear seat (4) and the central axis (1) is located near the cone (11); and the connection between the helical gear seat (4) and the support plate (3) is located at the edge of the support plate (3).

7. A horizontal spiral drill guide drill according to claim 6, characterized in that: The second hard cutter head (6) is embedded in the outer surface of the helical gear seat (4), and the second hard cutter head (6) is arranged in a linear array along the length direction of the helical gear seat (4); and the end of the second hard cutter head (6) is a cone head (61).

8. A horizontal spiral drill guide drill according to any one of claims 1 to 7, characterized in that: The support plate (3) is in the shape of a thin plate, and the grooves (31) are arranged in a circular array relative to the central axis (1).

9. A horizontal spiral drill guide drill according to claim 8, characterized in that: The rear rib plate (7) is connected to the central shaft (1) and the joint pipe (2), and the rear rib plate (7) is arranged in a circular array relative to the joint pipe (2); the rear rib plate (7) is in the shape of a thin plate.

10. A horizontal spiral drill guide drill according to claim 9, characterized in that: The guide rib ring (8) is connected to one end of the rear rib plate (7) away from the support plate (3); a gap is left between the guide rib ring (8) and the joint pipe (2); and the outer diameter of the guide rib ring (8) is the same as the outer diameter of the support plate (3).

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