Reaming device for geotechnical engineering investigation

Abstract

The utility model relates to the technical field of geotechnical engineering investigation, and discloses a reaming device for geotechnical engineering investigation, which comprises a support frame and a conical drill bit, an opening is arranged in the support frame, the conical drill bit extends into the support frame and is positioned in the opening, a spiral reaming strip is arranged on the outer side of the conical drill bit, and the spiral reaming strip is arranged on the outer side of the conical drill bit. A through groove is formed in the conical drill bit, a rotating shaft is arranged in the through groove, the shaft wall of the top end of the rotating shaft extends to the position above the conical drill bit and is fixedly connected with a first gear, and the upper surface of the supporting frame is fixedly connected with a connecting frame. The output shaft of the motor rotates to drive the rotating rod and the second gear to rotate, so that the first gear is driven to rotate, the first gear can drive the rotating shaft and the shifting plate to rotate, and the shifting plate extrudes the inner wall of the rectangular groove when rotating; and a conical drill bit and a spiral reaming strip can be driven to rotate to conduct reaming treatment on a hole opening of a hole, and the using effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering investigation technology, and in particular to a hole-reaming device for geotechnical engineering investigation. Background Technology

[0002] Geotechnical engineering investigation refers to the investigation, research, analysis, and evaluation of the properties, geological structure, and hydrogeological conditions of the soil and rock mass at the construction site before the construction of an engineering project. Its purpose is to provide detailed and accurate geological data and technical basis for engineering design and construction, and to ensure the safety, economy, and rationality of the project.

[0003] In existing technologies, during geotechnical engineering investigation, it is necessary to drill holes inside the soil and rock. Some holes need to be enlarged after investigation according to the needs of use. If a larger diameter drill bit is used directly, there will be some wear and it may be misaligned with the original hole, affecting subsequent investigation. It is necessary to use a larger tapered drill bit to chamfer before enlarging the hole. However, the tapered drill bit is large and it is difficult to drive it smoothly and quickly. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that a large-volume conical drill bit is needed to chamfer the hole before enlarging it, but the large-volume conical drill bit makes it difficult to drive smoothly and quickly. Therefore, this invention proposes a hole enlarging device for geotechnical engineering exploration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A borehole reaming device for geotechnical engineering exploration includes a support frame and a conical drill bit. The support frame has an opening inside, and the conical drill bit extends into the support frame and is located inside the opening. A spiral reaming strip is provided on the outer side of the conical drill bit. A through groove is provided inside the conical drill bit, and a rotating shaft is located inside the through groove. The top wall of the rotating shaft extends above the conical drill bit and is fixedly connected to a first gear. A connecting frame is fixedly connected to the upper surface of the support frame, and a motor is fixedly connected to the upper surface of the connecting frame. The output shaft of the motor extends into the connecting frame and is fixedly connected to a rotating rod. A second gear is fixedly sleeved on the rod wall. The first gear and the second gear are meshed with each other. A rectangular groove is provided on the inner wall of the conical drill bit in the through groove. A lever is fixedly connected to the bottom wall of the rotating shaft and is slidably disposed on the inner wall of the rectangular groove.

[0007] Preferably, the shaft extends above the first gear and is fixedly connected to a stabilizing disc.

[0008] Preferably, a connecting platform is fixedly connected to the bottom of the support frame, a connecting column is rotatably connected to the inner wall of the bottom end of the connecting platform, a support plate is fixedly connected to the axial wall of the connecting column, and the spiral expanding strip is pressed and set on the upper surface of the support plate.

[0009] Preferably, a handle is fixedly connected to the bottom end of the connecting column.

[0010] Preferably, a guide block is fixedly connected to the bottom of the first gear, and an annular groove is provided on the inner wall of the top of the support frame, with the guide block slidably disposed on the inner wall of the annular groove.

[0011] Preferably, the guide block is configured as an arc-shaped block, and a spherical groove is formed on the inner wall of the bottom end of the guide block. A ball bearing is rolled on the inner wall of the spherical groove of the guide block, and the ball bearing is rolled on the inner wall of the annular groove.

[0012] Compared with the prior art, this utility model provides a hole-reaming device for geotechnical engineering investigation, which has the following beneficial effects:

[0013] 1. This hole-reaming device for geotechnical engineering investigation uses the output shaft of a motor to drive a rotating rod and a second gear to rotate, which in turn drives the first gear to rotate. The first gear then drives the rotating shaft and the dial plate to rotate. When the dial plate rotates, it squeezes the inner wall of the rectangular groove, which in turn drives the conical drill bit and the spiral hole-reaming bar to rotate and ream the hole opening, ensuring the effectiveness of the device.

[0014] 2. The hole-reaming device for geotechnical engineering exploration improves the stability of the first gear rotation by having the guide block slide along the inner wall of the annular groove. The rolling balls are set in the gap between the guide block and the annular groove, which reduces friction, improves wear resistance, and ensures service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a borehole enlargement device for geotechnical engineering investigation proposed in this utility model;

[0016] Figure 2 This is a top-view schematic diagram of the structure of a borehole enlargement device for geotechnical engineering exploration proposed in this utility model;

[0017] Figure 3 for Figure 1 Bottom view of the structure of the first and second gears;

[0018] Figure 4 for Figure 1 A top-down view of the structure of a conical drill bit.

[0019] In the diagram: 1 Support frame, 2 Conical drill bit, 3 Spiral reaming bar, 4 Rotary shaft, 5 First gear, 6 Connecting frame, 7 Motor, 8 Rotating rod, 9 Second gear, 10 Dial plate, 11 Stabilizing plate, 12 Connecting platform, 13 Connecting column, 14 Support plate, 15 Handle, 16 Guide block, 17 Ball bearing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A borehole reaming device for geotechnical engineering exploration includes a support frame 1 and a conical drill bit 2. The support frame 1 has an opening inside, and the conical drill bit 2 extends into the support frame 1 and is located inside the opening. A spiral reaming strip 3 is provided on the outer side of the conical drill bit 2. A through groove is provided inside the conical drill bit 2. A rotating shaft 4 is located inside the through groove. The top shaft wall of the rotating shaft 4 extends above the conical drill bit 2 and is fixedly connected to a first gear 5. A connecting frame 6 is fixedly connected to the upper surface of the support frame 1. A motor 7 is fixedly connected to the upper surface of the connecting frame 6. The output shaft of the motor 7 extends into the connecting frame 6 and is fixedly connected to a rotating rod 8. A second gear 9 is fixedly sleeved on the rod wall of the rotating rod 8. The first gear 5 and the second gear 9 are meshed with each other. A rectangular groove is provided on the inner wall of the conical drill bit 2 located in the through groove. A lever 10 is fixedly connected to the bottom shaft wall of the rotating shaft 4. The lever 10 is slidably disposed on the inner wall of the rectangular groove. The shaft body of the rotating shaft 4 extends above the first gear 5 and is fixedly connected to a stabilizing disc 11.

[0022] A connecting platform 12 is fixedly connected to the bottom of the support frame 1. A connecting column 13 is rotatably connected to the inner wall of the bottom end of the connecting platform 12. A support plate 14 is fixedly connected to the shaft wall of the connecting column 13. A spiral expanding strip 3 is pressed and set on the upper surface of the support plate 14. A handle 15 is fixedly connected to the shaft wall of the bottom end of the connecting column 13.

[0023] In use, rotating the handle 15 can drive the connecting column 13 to rotate along the inner wall of the connecting platform 12, which can cause the support plate 14 to swing and separate from the conical drill bit 2 and the spiral reaming bar 3, allowing the conical drill bit 2 and the spiral reaming bar 3 to extend to the opening of the hole. Then, the output shaft of the motor 7 rotates, which can drive the rotating rod 8 and the second gear 9 to rotate, thereby driving the first gear 5 to rotate. The first gear 5 can drive the rotating shaft 4 and the dial plate 10 to rotate. When the dial plate 10 rotates, it squeezes the inner wall of the rectangular groove, which can drive the conical drill bit 2 and the spiral reaming bar 3 to rotate and enlarge the opening of the hole, ensuring the effect of use.

[0024] To improve the stability of the rotation of the first gear 5, such as Figure 1-4As shown, a guide block 16 is fixedly connected to the bottom of the first gear 5. An annular groove is provided on the inner wall of the top of the support frame 1. The guide block 16 is slidably disposed on the inner wall of the annular groove. The guide block 16 is configured as an arc-shaped block. A spherical groove is provided on the inner wall of the bottom end of the guide block 16. A ball bearing 17 is rolled on the inner wall of the spherical groove of the guide block 16. The ball bearing 17 is rolled on the inner wall of the annular groove.

[0025] The guide block 16 slides along the inner wall of the annular groove, which can improve the stability of the rotation of the first gear 5. The rolling ball 17 is set in the gap between the guide block 16 and the annular groove, which can reduce friction, improve wear resistance, and ensure service life.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A borehole reamer for geotechnical engineering investigation, comprising a support frame (1) and a conical drill bit (2), characterized in that: The support frame (1) has an opening inside, and the conical drill bit (2) extends into the support frame (1) and is located inside the opening. A spiral expanding bar (3) is provided on the outer side of the conical drill bit (2). A through groove is provided inside the conical drill bit (2), and a rotating shaft (4) is located inside the through groove. The top wall of the rotating shaft (4) extends above the conical drill bit (2) and is fixedly connected to a first gear (5). A connecting frame (6) is fixedly connected to the upper surface of the support frame (1). A motor (7) is fixedly connected to the upper surface of the 6). The output shaft of the motor (7) extends into the interior of the connecting frame (6) and is fixedly connected to a rotating rod (8). A second gear (9) is fixedly sleeved on the rod wall of the rotating rod (8). The first gear (5) and the second gear (9) mesh with each other. A rectangular groove is opened on the inner wall of the through groove of the tapered drill bit (2). A dial plate (10) is fixedly connected to the bottom shaft wall of the rotating shaft (4). The dial plate (10) is slidably disposed on the inner wall of the rectangular groove.

2. The borehole enlargement device for geotechnical engineering investigation according to claim 1, characterized in that: The shaft of the rotating shaft (4) extends above the first gear (5) and is fixedly connected to a stabilizing disc (11).

3. The borehole enlargement device for geotechnical engineering investigation according to claim 1, characterized in that: The bottom of the support frame (1) is fixedly connected to a connecting platform (12), and the inner wall of the bottom end of the connecting platform (12) is rotatably connected to a connecting column (13). A support plate (14) is fixedly connected to the shaft wall of the connecting column (13), and the spiral expanding strip (3) is pressed and set on the upper surface of the support plate (14).

4. A borehole enlargement device for geotechnical engineering investigation according to claim 3, characterized in that: A handle (15) is fixedly connected to the bottom shaft wall of the connecting column (13).

5. A borehole enlargement device for geotechnical engineering investigation according to claim 1, characterized in that: The bottom of the first gear (5) is fixedly connected to a guide block (16), and the inner wall of the top of the support frame (1) is provided with an annular groove. The guide block (16) is slidably disposed on the inner wall of the annular groove.

6. A borehole enlargement device for geotechnical engineering investigation according to claim 5, characterized in that: The guide block (16) is configured as an arc-shaped block, and a spherical groove is provided on the inner wall of the bottom end of the guide block (16). A ball bearing (17) is rolled on the inner wall of the spherical groove of the guide block (16), and the ball bearing (17) is rolled on the inner wall of the annular groove.

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