A drilling device for geotechnical investigation

Abstract

The application relates to a drilling device for geotechnical investigation, and belongs to the technical field of investigation equipment. The drilling device comprises a tank body, a sampler, a driving assembly and a positioning assembly which are arranged on the tank body. The driving assembly is connected with the sampler and is used for driving the sampler to rotate and move in the vertical direction to sample. The positioning assembly is used for connecting the tank body with the stratum. The higher the sampling depth of the sampler into the stratum is, the larger the contact area between the positioning assembly and the stratum is. The application can improve the soil sampling efficiency.

Description

Technical Field

[0001] This application relates to the technical field of exploration equipment, and in particular to a drilling device for geotechnical exploration. Background Technology

[0002] Geotechnical engineering investigation is the activity of investigating, analyzing, and evaluating the geological and environmental characteristics and geotechnical engineering conditions of a construction site and compiling investigation documents. It is crucial for building construction projects, and drilling equipment is a commonly used investigation device in geotechnical investigation.

[0003] A drilling device includes a housing, a drive assembly, a sampler, and several electric telescopic rods, all mounted on the housing. The drive assembly drives the sampler to move vertically. The electric telescopic rods are vertically positioned, with their fixed ends fixedly connected to the housing. Casters are installed at the top corners of the housing's bottom surface, located below the electric telescopic rods. During sampling, the electric telescopic rods are activated, causing their movable ends to move downwards and creating a distance between the casters and the ground, thus fixing the housing's position. Then, the drive assembly is activated, driving the sampler to vertically downwards to collect soil samples.

[0004] During the soil sampling process described above, the drive component vibrates the electric telescopic rod during operation, and the housing is positioned by the telescopic rod. This can cause the housing to move on the ground during sampling, resulting in a shift in the sampling position. Consequently, workers need to take multiple soil samples, leading to low soil sampling efficiency. Summary of the Invention

[0005] To improve soil sampling efficiency, this application provides a drilling device for geotechnical exploration.

[0006] This application provides a drilling device for geotechnical investigation, which adopts the following technical solution:

[0007] A drilling device for geotechnical exploration includes a tank, a sampler, and a drive assembly and a positioning assembly, both mounted on the tank. The drive assembly is connected to the sampler and is used to drive the sampler to rotate and move vertically to collect samples. The positioning assembly is used to connect the tank to the formation, and the higher the depth of the sampler entering the formation for sampling, the larger the contact area between the positioning assembly and the formation.

[0008] By adopting the above technical solution, during the process of the sampler entering the stratum for sampling, the higher the sampling depth, the longer the working time required for the drive component. In addition, the drive component generates vibration on the positioning component during operation, which may cause the connection between the positioning component and the stratum to loosen. Since the contact area between the positioning component and the stratum increases with the increase of the sampler's depth in the stratum, the connection between the positioning component and the stratum remains stable, avoiding repeated sampling by the sampler and thus improving soil sampling efficiency.

[0009] Optionally, the drive assembly includes a motor mounted on the tank and a cylinder coaxially arranged with the motor output shaft. The fixed end of the cylinder is fixedly connected to the motor output shaft, and the movable end of the cylinder is connected to the sampler.

[0010] By adopting the above technical solution, the motor and cylinder are started, the motor output shaft drives the cylinder and sampler to rotate, and the cylinder drives the sampler to move vertically downward, thereby enabling the sampler to enter the formation for sampling.

[0011] Optionally, the positioning component includes a positioning rod vertically disposed on one side of the sampler, and a transmission component is disposed on the tank body. The transmission component is connected to the positioning rod, and the transmission component drives the positioning rod to move in the vertical direction when the motor output shaft reverses.

[0012] By adopting the above technical solution, after the motor output shaft rotates forward for a certain period of time, the motor output shaft is controlled to rotate in reverse, so that the transmission component drives the positioning rod to move vertically downward and insert it into the stratum, so that the tank is stably positioned with the stratum by the positioning rod.

[0013] Optionally, the transmission assembly includes a slider, a reciprocating screw vertically passing through the slider and threadedly connected to the slider, and a vertically arranged rotating shaft. The reciprocating screw is rotatably connected to the tank body. The slider is connected to a positioning rod. The rotating shaft is a telescopic rod structure, with its fixed end connected to the tank body and its movable end fixedly connected to the positioning rod. When the motor output shaft reverses, it is used to drive the reciprocating screw to rotate.

[0014] By adopting the above technical solution, the motor output shaft reverses and drives the reciprocating screw to rotate. The rotating reciprocating screw drives the slider to move vertically downward, so that the slider drives the positioning rod vertically downward, thereby enabling the positioning rod to enter the formation downward.

[0015] Optionally, a first gear is fixedly sleeved on the output shaft of the motor; the rotating shaft is rotatably connected to the tank body, and a second gear is fixedly sleeved on the fixed end of the rotating shaft, the second gear meshing with the first gear; a connecting rod is fixedly installed on the slider, and the end of the connecting rod away from the slider is rotatably connected to the positioning rod.

[0016] By adopting the above technical solution, when the motor output shaft rotates, it drives the first gear, the second gear, and the rotating shaft to rotate, so that the positioning rod is always in a rotating state under the drive of the motor, which facilitates the positioning rod to enter the formation.

[0017] Optionally, a ratchet assembly is provided on the fixed end of the rotating shaft, and a third gear is fixedly sleeved on the top of the reciprocating screw. The third gear works in conjunction with the ratchet assembly. When the motor output shaft reverses, the ratchet assembly drives the third gear and the reciprocating screw to rotate.

[0018] By adopting the above technical solution, when the positioning rod needs to move downward, the control motor output shaft reverses, and drives the rotating shaft to rotate in the opposite direction through the first gear and the second gear. At this time, the rotating shaft drives the ratchet assembly to rotate, so that the ratchet assembly can drive the third gear and the reciprocating screw to rotate.

[0019] Optionally, the positioning rod has an installation groove on its side wall, and the positioning assembly also includes an electric telescopic rod disposed in the installation groove. The fixed end of the electric telescopic rod is fixedly connected to the positioning rod, and the electric telescopic rod is used to extend in a direction away from the bottom surface of the installation groove.

[0020] By adopting the above technical solution, when the slider is located at the bottom of the reciprocating screw and the sampler is still in the process of vertically downward sampling, the slider position is fixed and the electric telescopic rod is activated. The electric telescopic rod extends and is horizontally inserted into the formation, so that the connection stability between the tank and the formation is further enhanced by the electric telescopic rod.

[0021] Optionally, the sampler has several blades fixedly arranged circumferentially at its bottom.

[0022] By adopting the above technical solution, the blade design facilitates the sampler's entry into the formation for sampling.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During the process of the sampler entering the formation for sampling, the higher the sampling depth, the longer the working time required for the drive component. In addition, the drive component vibrates the positioning component during operation, which may cause the connection between the positioning component and the formation to loosen. Since the contact area between the positioning component and the formation increases with the increase of the sampler's depth in the formation, the connection between the positioning component and the formation is always kept stable, avoiding repeated sampling by the sampler and thus improving soil sampling efficiency.

[0025] 2. By setting a ratchet assembly, when the positioning rod needs to move downward, the motor output shaft is controlled to reverse, and the first gear and the second gear drive the rotating shaft to rotate in the opposite direction. At this time, the rotating shaft drives the ratchet assembly to rotate, so that the ratchet assembly can drive the third gear and the reciprocating screw to rotate.

[0026] 3. By setting up an electric telescopic rod, when the slider is at the bottom of the reciprocating screw and the sampler is still in the process of vertically downward sampling, the slider position is fixed and the electric telescopic rod is activated. The electric telescopic rod extends and is horizontally inserted into the formation, so that the connection stability between the tank and the formation is further enhanced by the electric telescopic rod. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0028] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0029] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Tank body; 11. Clearance hole; 12. Self-locking caster wheel; 2. Sampler; 21. Blade; 3. Drive assembly; 31. Motor; 32. Cylinder; 4. Positioning assembly; 41. Positioning rod; 42. Electric telescopic rod; 43. Shaft; 431. Mounting slot; 44. First gear; 45. Second gear; 5. Ratchet assembly; 51. Telescopic rod; 52. Spring; 53. Pawl; 54. Internal meshing ratchet; 55. External gear ring; 6. Transmission assembly; 61. Reciprocating screw; 62. Slider; 63. Connecting rod; 64. Third gear. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a drilling device for geotechnical exploration. (Refer to...) Figure 1 and Figure 2 A drilling device for geotechnical exploration includes a tank 1, a sampler 2, and a drive assembly 3 mounted on the tank 1. The drive assembly 3 is connected to the sampler 2 and is used to drive the sampler 2 to rotate and move vertically to collect samples. When collecting soil samples, the tank 1 is moved to the sampling area, and the sampler 2 is moved directly above the sampling area. Then, the drive assembly 3 is activated, and the drive assembly 3 drives the sampler 2 to vertically downward into the stratum to collect samples.

[0033] Reference Figure 1 and Figure 2The tank body 1 has a rectangular cross-section and a clearance hole 11 is provided on the bottom surface of the tank body 1. Self-locking casters 12 are installed at the top corners of the bottom surface of the tank body 1. The drive assembly 3 includes a motor 31 and a cylinder 32. The motor 31 is located inside the tank body 1 and is installed at the center of the top surface of the tank body 1. The cylinder 32 is vertically arranged and coaxial with the output shaft of the motor 31. The fixed end of the cylinder 32 is fixedly connected to the output shaft of the motor 31, and the movable end of the cylinder 32 is fixedly connected to the sampler 2. The sampler 2 is vertically arranged below the cylinder 32. The sampler 2 has a circular cross-section and an open bottom structure. A blade 21 is fixedly arranged at the bottom of the sampler 2, and several blades 21 are arranged around the circumference of the sampler 2. The arrangement of the blades 21 facilitates the sampler 2 to enter the formation for sampling.

[0034] When taking soil samples, the tank 1 is moved to the sampling area by the self-locking caster 12, and the sampler 2 is moved directly above the sampling area. Then, the motor 31 and cylinder 32 are started. The output shaft of the motor 31 drives the sampler 2 to rotate, and the moving end of the cylinder 32 drives the sampler 2 to move vertically downward and enter the stratum to take samples.

[0035] Reference Figure 1 and Figure 2 The tank body 1 is equipped with a positioning assembly 4 and a transmission assembly 6. The positioning assembly 4 includes a rotating shaft 43, a positioning rod 41, an electric telescopic rod 42, a first gear 44, and a second gear 45. The rotating shaft 43 is a telescopic rod 51 structure and is vertically arranged on one side of the cylinder 32. The fixed end of the rotating shaft 43 is rotatably connected to the top surface of the tank body 1 around its own axis. The first gear 44 is coaxially sleeved on the output shaft of the motor 31 and is fixedly connected to the output shaft of the motor 31. The second gear 45 is coaxially sleeved on the rotating shaft 43. On the fixed end, and in the same plane as the first gear 44, the second gear 45 is fixedly connected to the fixed end of the rotating shaft 43 and meshes with the first gear 44; the positioning rod 41 is coaxially arranged with the rotating shaft 43 and located below the rotating shaft 43, and the positioning rod 41 is fixedly connected to the movable end of the rotating shaft 43. When the positioning rod 41 moves downward, it can enter the lower part of the tank body 1 through the clearance hole 11; the electric telescopic rod 42 is horizontally arranged, and the fixed end of the electric telescopic rod 42 is embedded in the positioning rod 41 and located at the bottom of the positioning rod 41.

[0036] Reference Figure 1 and Figure 3A mounting groove 431 is provided on the side wall of the fixed end of the rotating shaft 43. A ratchet assembly 5 is provided on the fixed end of the rotating shaft 43. The ratchet assembly 5 includes an internal meshing ratchet 54, a telescopic rod 51, a spring 52, a pawl 53, and an external gear ring 55. The pawl 53 is horizontally arranged, with one end set in the mounting groove 431 and hinged to the side wall of the mounting groove 431. The end of the pawl 53 away from the mounting groove 431 is used in conjunction with the internal meshing ratchet 54. The telescopic rod 51 is horizontally arranged in the mounting groove 431. The fixed end of the telescopic rod 51 is hinged to the side wall of the mounting groove 431, and the movable end of the telescopic rod 51 is hinged to the pawl 53. The spring 52 is sleeved on the movable end of the telescopic rod 51. The two ends of the spring 52 are fixedly connected to the fixed end of the telescopic rod 51 and the pawl 53, respectively. The spring 52 is always The device is in a compressed state, and the spring 52 is used to reset the pawl 53; the internal meshing ratchet 54 is coaxially sleeved on the fixed end of the rotating shaft 43, and the internal meshing ratchet 54 is rotatably connected to the tank body 1 around its own axis; when the output shaft of the motor 31 rotates in the reverse direction, the output shaft of the motor 31 drives the rotating shaft 43 to rotate in the reverse direction through the first gear 44 and the second gear 45, and the rotating shaft 43 in the reverse direction drives the internal meshing ratchet 54 to rotate through the pawl 53; when the output shaft of the motor 31 rotates in the forward direction, the pawl 53 is squeezed by the internal meshing ratchet 54, causing the pawl 53 to rotate towards the mounting groove 431, thereby keeping the internal meshing ratchet 54 stationary when the output shaft of the motor 31 rotates in the forward direction; the external gear ring 55 is coaxially sleeved on the internal meshing ratchet 54 and is fixedly connected to the internal meshing ratchet 54.

[0037] Reference Figure 1 and Figure 2 The transmission assembly 6 includes a reciprocating screw 61, a slider 62, a third gear 64, and a connecting rod 63. The reciprocating screw 61 is vertically installed inside the tank 1 and located on the side of the rotating shaft 43 away from the cylinder 32. The reciprocating screw 61 is rotatably connected to the tank 1 around its own axis. The third gear 64 is coaxially sleeved on the top of the reciprocating screw 61 and is fixedly connected to the reciprocating screw 61. The third gear 64 meshes with the external gear ring 55. The reciprocating screw 61 passes through the slider 62, and the slider 62 is threadedly connected to the screw. The connecting rod 63 is vertically installed between the reciprocating screw 61 and the cylinder 32. The top of the connecting rod 63 is fixedly connected to the slider 62, and the bottom of the connecting rod 63 is fixedly connected to the positioning rod 41. The connecting rod 63 serves to guide the movement of the slider 62 in the vertical direction.

[0038] When the sampler 2 is located above the sampling area, the motor 31 is started first. At this time, the output shaft of the motor 31 reverses, causing the output shaft of the motor 31 to drive the rotating shaft 43 to reverse through the first gear 44 and the second gear 45. The rotating shaft 43, which rotates in the opposite direction, drives the internal meshing ratchet 54 to rotate through the pawl 53. In turn, it drives the reciprocating screw 61 to rotate through the external gear ring 55 and the third gear 64, causing the slider 62 to move vertically downward. During the vertical downward movement of the slider 62, the slider 62 drives the rotating positioning rod 41 to move vertically downward through the connecting rod 63 and is vertically inserted into the ground. When the positioning rod 41 descends to the preset position, the motor 31 is turned off, thus completing the initial positioning of the tank 1.

[0039] After the initial positioning of tank 1 is completed, motor 31 is restarted. At this time, the output shaft of motor 31 rotates forward, and then cylinder 32 is started. Cylinder 32 drives sampler 2 vertically downward into the formation for sampling. During the vertical downward sampling process, the output shaft of motor 31 reverses several times at regular intervals, causing positioning rod 41 to gradually move downward under the action of slider 62. When slider 62 is at the bottom of reciprocating screw 61 and sampler 2 is still in the process of vertical downward sampling, the output shaft of motor 31 stops rotating, and at the same time, electric telescopic rod 42 is started. Electric telescopic rod 42 moves along its own length. The electric telescopic rod 42 extends a certain length in the direction of the sampler 2 and extends several times at certain intervals. After the sampler 2 has finished sampling, the electric telescopic rod 42 is controlled to retract. After the electric telescopic rod 42 returns to its initial length, the output shaft of the motor 31 is started. At this time, the output shaft of the motor 31 rotates in the opposite direction, causing the slider 62 to move upward from the bottom of the reciprocating screw 61 to the top of the reciprocating screw 61, thereby causing the slider 62 to drive the positioning rod 41 back to the initial position. At the same time as the slider 62 moves upward, the cylinder 32 is started. The moving end of the cylinder 32 drives the sampler 2 to move vertically upward, thereby completing the soil sampling.

[0040] The implementation principle of a drilling device for geotechnical exploration according to an embodiment of this application is as follows: the sampler 2 is moved directly above the sampling area, the motor 31 is started, causing the output shaft of the motor 31 to reverse and drive the positioning rod 41 to move vertically downward a certain distance and insert it on the top surface, completing the initial positioning of the tank 1; then the output shaft of the motor 31 rotates forward, and the cylinder 32 drives the sampler 2 to sample downward. During the sampling process, the deeper the sampler 2 enters the stratum, the longer the positioning rod 41 enters the stratum, so that the connection between the tank 1 and the stratum is always in a stable state, avoiding repeated sampling by the sampler 2, thereby improving the soil sampling efficiency.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drilling device for rock and soil exploration, characterized in that: The system includes a tank (1), a sampler (2), and a drive assembly (3) and a positioning assembly (4) both mounted on the tank (1). The drive assembly (3) is connected to the sampler (2) and is used to drive the sampler (2) to rotate and move vertically for sampling. The positioning assembly (4) is used to connect the tank (1) to the formation, and the deeper the sampler (2) enters the formation for sampling, the larger the contact area between the positioning assembly (4) and the formation. The drive assembly (3) includes a motor (31) mounted on the tank (1) and a cylinder (32) coaxially mounted with the output shaft of the motor (31). The fixed end of the cylinder (32) is fixedly connected to the output shaft of the motor (31), and the movable end of the cylinder (32) is connected to the sampler. The sampler (2) is connected; the positioning component (4) includes a positioning rod (41) vertically arranged on one side of the sampler (2), and a transmission component (6) is provided on the tank body (1). The transmission component (6) is connected to the positioning rod (41). When the output shaft of the motor (31) reverses, the transmission component (6) drives the positioning rod (41) to move vertically; the transmission component (6) includes a slider (62), a reciprocating screw (61) vertically passing through the slider (62) and threadedly connected to the slider (62), and a vertically arranged rotating shaft (43). The reciprocating screw (61) is rotatably connected to the tank body (1); the slider (62) is connected to the positioning rod (41); the rotating shaft (43) is a telescopic rod structure, and the rotating shaft (43) is fixed. The fixed end is connected to the tank body (1), and the movable end of the rotating shaft (43) is fixedly connected to the positioning rod (41); when the output shaft of the motor (31) reverses, it is used to drive the reciprocating screw (61) to rotate; a first gear (44) is fixedly sleeved on the output shaft of the motor (31); the rotating shaft (43) is rotatably connected to the tank body (1), and a second gear (45) is fixedly sleeved on the fixed end of the rotating shaft (43), and the second gear (45) meshes with the first gear (44); a connecting rod (63) is fixedly installed on the slider (62), and the end of the connecting rod (63) away from the slider (62) is rotatably connected to the positioning rod (41); a ratchet assembly (5) is installed on the fixed end of the rotating shaft (43), and the top of the reciprocating screw (61) A third gear (64) is fixedly mounted and used in conjunction with a ratchet assembly (5). When the output shaft of the motor (31) reverses, the ratchet assembly (5) drives the third gear (64) and the reciprocating screw (61) to rotate. A mounting groove (431) is provided on the side wall of the fixed end of the rotating shaft (43). The ratchet assembly (5) includes an internal meshing ratchet (54), a telescopic rod (51), a spring (52), a pawl (53), and an external gear ring (55). The pawl (53) is horizontally positioned. One end of the pawl (53) is located in the mounting groove (431) and is hinged to the side wall of the mounting groove (431). The end of the pawl (53) away from the mounting groove (431) is used in conjunction with the internal meshing ratchet (54).The telescopic rod (51) is horizontally set in the mounting groove (431). The fixed end of the telescopic rod (51) is hinged to the side wall of the mounting groove (431), and the movable end of the telescopic rod (51) is hinged to the pawl (53). The spring (52) is sleeved on the movable end of the telescopic rod (51). The two ends of the spring (52) are fixedly connected to the fixed end of the telescopic rod (51) and the pawl (53) respectively. The spring (52) is always in a compressed state and is used to reset the pawl (53). The internal meshing ratchet (54) is coaxially sleeved on the fixed end of the rotating shaft (43), and the internal meshing ratchet (54) is rotatably connected to the tank body (1) around its own axis. When the motor (31) When the output shaft rotates in the reverse direction, the output shaft of the motor (31) drives the rotating shaft (43) to rotate in the reverse direction through the first gear (44) and the second gear (45). The rotating shaft (43) rotates in the reverse direction and drives the internal meshing ratchet (54) to rotate through the pawl (53). When the output shaft of the motor (31) rotates in the forward direction, the pawl (53) is squeezed by the internal meshing ratchet (54), causing the pawl (53) to rotate towards the mounting groove (431), thereby keeping the internal meshing ratchet (54) stationary when the output shaft of the motor (31) rotates in the forward direction. The external gear ring (55) is coaxially sleeved on the internal meshing ratchet (54) and is fixedly connected to the internal meshing ratchet (54).

2. The drilling device for rock and soil exploration according to claim 1, characterized in that: The positioning assembly (4) also includes a horizontally arranged electric telescopic rod (42), the fixed end of which is embedded in the positioning rod (41), the fixed end of which is fixedly connected to the positioning rod (41), and the electric telescopic rod (42) is used to extend in a direction away from the bottom surface of the mounting groove (431).

3. The drilling device for rock and soil exploration according to claim 1, characterized in that: The sampler (2) has several blades (21) fixedly arranged circumferentially at its bottom.

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