Construction engineering soil sampling device

Abstract

The invention relates to the technical field of soil sampling, and discloses a constructional engineering soil sampling device which comprises a drilling rod and a drilling barrel, the drilling barrel is installed at the bottom of the drilling rod, and the drilling rod drives the drilling barrel to drill downwards; a sampling push rod and a sampling barrel are mounted in the drilling barrel, and when the drilling rod drives the drilling barrel to drill to a preset depth, the sampling push rod continues to drive the sampling barrel to sample downwards; a plurality of groups of openable and closable separators are arranged on the sampling barrel at equal intervals. After a preset depth is drilled through the drilling rod and the drilling barrel, downward sampling is continued through the sampling barrel, so that an underground soil sample at a specific depth can be obtained; the movable push plate and the pressure sensor are arranged in the sampling barrel, the pressure threshold value is preset, when the top of the sampling barrel is filled with a soil sample, the soil sample plate in the sampling barrel is stored in a layered mode through the partition piece, soil compression caused by continuous downward drilling is avoided, and the original structure and layer of soil are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, and in particular to a soil sampling device for construction engineering. Background Art

[0002] Construction projects require a number of detailed operations such as a census of the soil at the construction site, soil monitoring, and soil testing and formulation. The data obtained is used to determine the depth of the foundation and the total weight of the building. A soil sampling device is required in this process.

[0003] The prior art discloses a soil sampler for construction (publication number CN114062019B). This invention divides the soil during sampling into at least two identical soil samples by setting at least one sample dividing plate in the cylinder. That is, when the soil sampler is used for one sampling, at least two identical soil samples are obtained. Under the premise of satisfying the use of soil samples in construction, the number of sampling times of the soil at the construction site is effectively reduced. However, this solution still has the following problems: in the actual soil sampling operation of construction projects, it is necessary to collect soil samples at a specific depth underground, and conventional soil sampling devices generally drill through a cylindrical structure. This method will compress the soil when drilling downward, which will destroy the original structure and layers of the soil. For this reason, we need to provide a soil sampling device for construction projects. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution to obtain soil samples within a specific depth range by segmented drilling, and at the same time set up a separation structure to prevent the soil samples from being compressed, so as to solve the problems in the prior art raised in the above background technology.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A soil sampling device for construction engineering, comprising:

[0007] A drilling rod and a drill barrel, wherein the drill barrel is installed at the bottom of the drilling rod, and the drilling rod drives the drill barrel to drill downwards;

[0008] The inside of the drill tube is equipped with a sampling push rod and a sampling tube. When the drilling rod drives the drill tube to drill to a predetermined depth, the sampling push rod continues to drive the sampling tube downward to take samples.

[0009] A plurality of groups of openable and closable partitions are equidistantly arranged on the sampling cylinder, a driving assembly for driving the partitions to open and close is arranged on the outside of the sampling cylinder, a movable push plate and a pressure sensor are arranged on the inner top of the sampling cylinder, and when the soil sample is sampled downward and gradually fills the interior of the sampling cylinder until the soil sample pushes the movable push plate upward to trigger the pressure sensor to exceed a preset pressure threshold, the driving assembly drives the partitions to close and store the soil inside the sampling cylinder in layers.

[0010] Preferably, a matching drill bit is installed at the bottom of the sampling tube, and the matching drill bit is arranged corresponding to the bottom of the drill tube. A center hole is arranged inside the matching drill bit, and the center hole is aligned with the sampling tube. A receiving groove is opened on the side wall of the center hole of the matching drill bit, and a rotating plate is installed inside the receiving groove through a rotating shaft. A driving member driven by the rotating plate is installed in the receiving groove. The rotating plate rotates to change the opening and closing state of the bottom of the center hole. When the drill tube drills to a predetermined depth, the center hole opens so that sampling of the sampling tube can be carried out.

[0011] Preferably, the partition is configured as an iris mechanism, a plurality of groups of iris plates that can be opened and closed are disposed at the center of the iris mechanism, and a rotating plate for driving the opening and closing adjustment of the iris plates is disposed on the side of the iris mechanism.

[0012] Preferably, an outer protective tube is installed outside the sampling tube, the partition and the driving assembly are installed on the outer protective tube, and the piston rod of the sampling push rod is fixedly connected to the top of the outer protective tube.

[0013] Preferably, the driving assembly includes a driving push rod, which is rotatably mounted on the side of the outer casing, and the rotating plates of multiple groups of iris mechanisms are connected by a rotating rod, a rotating sleeve is provided on the rotating rod, and the piston rod of the driving push rod is fixedly connected to the rotating sleeve.

[0014] Preferably, the movable push plate is slidably mounted inside the sampling cylinder, a pressure sensor is mounted on the inner top of the sampling cylinder via a mounting plate, and a contact plate is connected to the bottom of the pressure sensor via a buffer spring.

[0015] Preferably, the movable push plate is connected to a first positioning rod, which is slidably inserted in the top of the sampling barrel, the top of the mounting plate is connected to a second positioning rod, which is slidably inserted in the top of the sampling barrel, the top of the mounting plate is rotatably connected to an adjusting screw, and the adjusting screw is threadedly installed in the top of the sampling barrel, and the position of the pressure sensor can be adjusted by rotating the adjusting screw to change the position of triggering the preset pressure threshold.

[0016] Preferably, it comprises a controller and a driving motor, wherein the driving motor can drive the adjusting screw to rotate, the controller is electrically connected to the pressure sensor, and the controller controls the operation of the sampling push rod, the driving push rod and the driving motor.

[0017] Preferably, the sampling barrel is configured as a cylindrical structure with an openable side, and a side plate is rotatably mounted on the side of the sampling barrel via a rotating hinge, and the soil sample can be taken out from the side of the sampling barrel by opening the side plate.

[0018] Preferably, it includes a mobile frame, the drilling rod is set as a threaded drilling rod, and a driver and a driving wheel for driving the drilling rod to rotate are installed on the mobile frame. The driving wheel is set as two sets of gears that mesh with each other, one gear is installed on the output shaft of the driver, and the other gear is provided with an internal threaded hole that matches the drilling rod thread. The driver can drive the drilling rod to rotate and drill downward.

[0019] Technical effects and advantages of the present invention: Compared with the prior art, the soil sampling device for construction engineering proposed by the present invention has the following advantages:

[0020] The present invention uses a drilling rod and a drill tube to drill to a predetermined depth, and then continues to sample downwards through a sampling tube, so as to obtain soil samples at a specific depth underground; a movable push plate and a pressure sensor are arranged inside the sampling tube and a pressure threshold is preset, and when the soil sample is filled to the top of the sampling tube, the soil sample inside the sampling tube is stored in layers through a partition, thereby avoiding soil compression caused by continued downward drilling and ensuring the original structure and layers of the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the soil sampling device of the present invention;

[0022] Figure 2 It is a front structural schematic diagram of the soil sampling device of the present invention;

[0023] Figure 3 It is a schematic diagram of the structures of the drill tube and sampling tube of the present invention;

[0024] Figure 4 It is one of the schematic diagrams of the structure of the sampling tube and the outer protective tube of the present invention;

[0025] Figure 5 This is the second schematic diagram of the structure of the sampling tube and the outer protective tube of the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 7 It is a schematic diagram of the structure of the present invention such as a drill bit and a sampling tube;

[0028] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0029] Fig. 9 It is a schematic diagram of the structure of the sampling tube and side plates of the present invention.

[0030] In the figure:

[0031] 11. Mobile frame; 12. Driver; 13. Driving wheel; 14. Drilling rod; 15. Drill barrel;

[0032] 21. Sampling push rod; 22. Matching drill bit; 23. Sampling tube; 24. Separator; 25. Driving assembly; 26. Outer casing; 27. Rotating plate; 28. Rotating rod; 29. ​​Rotating sleeve; 210. Driving push rod; 211. Mounting plate; 212. First positioning rod; 213. Second positioning rod; 214. Movable push plate; 215. Pressure sensor; 216. Buffer spring; 217. Contact plate; 218. Adjusting screw;

[0033] 221, rotating shaft; 222, rotating plate; 223, storage slot; 261, side plate; 262, rotating hinge. DETAILED DESCRIPTION

[0034] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0035] The invention provides Figure 1 and Figure 2 As shown, a soil sampling device for construction engineering comprises:

[0036] A drilling rod 14 and a drill tube 15, wherein the drill tube 15 is installed at the bottom of the drilling rod 14, and the drilling rod 14 drives the drill tube 15 to drill downwards;

[0037] The sampling push rod 21 and the sampling tube 23 are installed inside the drill tube 15. When the drilling rod 14 drives the drill tube 15 to drill to a predetermined depth, the sampling push rod 21 continues to drive the sampling tube 23 downward to take samples.

[0038] A plurality of groups of openable and closable partitions 24 are equidistantly arranged on the sampling cylinder 23, a driving assembly 25 for driving the partitions 24 to open and close is arranged on the outside of the sampling cylinder 23, a movable push plate 214 and a pressure sensor 215 are arranged on the inner top of the sampling cylinder 23, when the soil sample is sampled downward and gradually fills the interior of the sampling cylinder 23, until the soil sample pushes the movable push plate 214 upward to trigger the pressure sensor 215 to exceed a preset pressure threshold, the driving assembly 25 drives the partitions 24 to close and store the soil inside the sampling cylinder 23 in layers.

[0039] Working principle: the drilling rod 14 drives the drill tube 15 to drill downward to a predetermined depth; then, the sampling tube 23 is driven downward by the sampling push rod 21 to obtain soil samples at a specific depth; the samples are protected in layers, and during the sampling process, the soil samples are gradually filled into the sampling tube 23; when the sample is full, the movable push plate 214 is pushed; when the pressure sensor 215 detects that the pressure exceeds the preset threshold, the drive assembly 25 is started, prompting the partition 24 to close; to prevent compression deformation, the layered preservation mechanism of the partition 24 effectively avoids compression and damage to the soil sample caused by continued drilling; to protect the original state of the soil, ensure that the obtained soil samples retain their natural structure and layers, which is conducive to subsequent analysis and detection; precise control, using the pressure sensor 215, to achieve precise control of the sample filling state, thereby improving the accuracy and reliability of sampling.

[0040] like Figure 2 and Figure 3 As shown, in order to enable the sampling barrel 23 to be used in conjunction with the drill barrel 15, and considering that the sampling barrel 23 needs to be in a closed state during the downward drilling of the drill barrel 15, a matching drill bit 22 is installed at the bottom of the sampling barrel 23, and the matching drill bit 22 is arranged corresponding to the bottom of the drill barrel 15. A center hole is arranged inside the matching drill bit 22, and the center hole and the sampling barrel 23 are aligned. A receiving groove 223 is opened on the side wall of the center hole of the matching drill bit 22, and a rotating plate 222 is rotatably installed inside the receiving groove 223 through a rotating shaft 221. A driving member driven by the rotating plate 222 is installed in the receiving groove 223, and the rotating plate 222 rotates to change the opening and closing state of the bottom of the center hole. When the drill barrel 15 drills to a predetermined depth, the center hole is opened so that the sampling barrel 23 can take samples.

[0041] like Figure 4 and Figure 5 As shown, regarding the specific setting method and specific implementation method of the partition 24, the partition 24 is configured as an iris mechanism, and a plurality of groups of iris plates that can be opened and closed are arranged at the center position of the iris mechanism, and a rotating plate 27 for driving the opening and closing adjustment of the iris plates is arranged on the side of the iris mechanism.

[0042] Specifically, an outer casing 26 is installed outside the sampling tube 23, the partition 24 and the drive assembly 25 are installed on the outer casing 26, and the piston rod of the sampling push rod 21 is fixedly connected to the top of the outer casing 26. Figure 5 and Figure 6 As shown, regarding the specific driving method of the partition 24, the driving assembly 25 includes a driving push rod 210, and the driving push rod 210 is rotatably installed on the side of the outer casing 26. The rotating plates 27 of multiple groups of iris mechanisms are connected by a rotating rod 28. A rotating sleeve 29 is rotatably provided on the rotating rod 28, and the piston rod of the driving push rod 210 is fixedly connected to the rotating sleeve 29.

[0043] like Figure 4 and Figure 7 As shown in the figure, regarding the specific arrangement of the movable push plate 214, the movable push plate 214 is slidably mounted inside the sampling tube 23, the inner top of the sampling tube 23 is mounted with a pressure sensor 215 through a mounting plate 211, and the bottom of the pressure sensor 215 is connected to a contact plate 217 through a buffer spring 216. Specifically, as Figure 7 and Figure 8 As shown, the movable push plate 214 is connected to a first positioning rod 212, which is slidably inserted in the top of the sampling tube 23, and the top of the mounting plate 211 is connected to a second positioning rod 213, which is slidably inserted in the top of the sampling tube 23. The top of the mounting plate 211 is rotatably connected to an adjusting screw 218, and the adjusting screw 218 is threadedly installed in the top of the sampling tube 23. By rotating the adjusting screw 218, the position of the pressure sensor 215 can be adjusted to change the position of triggering the preset pressure threshold.

[0044] Furthermore, in order to control the underground drilling structure on the ground, it includes a controller and a drive motor, the drive motor can drive the adjustment screw 218 to rotate, the controller is electrically connected to the pressure sensor 215, and the controller controls the operation of the sampling push rod 21, the drive push rod 210 and the drive motor.

[0045] like Fig. 9 As shown, the soil inside the sampling tube 23 can be pushed down by the first positioning rod 212 and the movable push plate 214 so as to take the soil out of the sampling tube 23. For more convenient taking out, the sampling tube 23 is set as a cylindrical structure with a side opening. The side of the sampling tube 23 is rotatably mounted with a side plate 261 by a rotating hinge 262. The side opening structure can also facilitate cleaning the inside of the sampling tube 23. The soil sample can be taken out from the side of the sampling tube 23 by opening the side plate 261. The soil sampling device also includes a mobile frame 11, the drilling rod 14 is set as a threaded drilling rod, and the mobile frame 11 is equipped with a driver 12 and a driving wheel 13 for driving the drilling rod 14 to rotate. The driving wheel 13 is set as two sets of gears meshing with each other, one of which is mounted on the output shaft of the driver 12, and the other gear is provided with an internal threaded hole that is threadedly matched with the drilling rod 14. The driver 12 can drive the drilling rod 14 to rotate and drill downward.

[0046] In summary, the present invention has the following comprehensive effects: segmented drilling, preliminary drilling to a predetermined depth through the drilling rod 14 and the drill tube 15; using the sampling tube 23 to drill deeply to a specific depth to obtain soil samples; pressure sensing and layered protection, a movable push plate 214 and a pressure sensor 215 are arranged inside the sampling tube 23; when the soil sample fills the sampling tube 23 and pushes the movable push plate 214, triggering the pressure sensor 215 to exceed the preset threshold, the drive component 25 prompts the partition 24 to close to achieve layered preservation; the center hole design, in conjunction with the center hole of the drill bit 22, can be opened and closed to coordinate depth sampling and ensure that the channel is unobstructed; side sampling is convenient, and the sampling tube 23 is designed to be openable on the side to facilitate personnel to take out samples; system control and adjustment, the controller and the drive motor can coordinate the operation of each part, especially adjust the pressure threshold to adapt to different sampling conditions. Protect soil structure, the advanced layered preservation mechanism avoids compression damage to the soil during the drilling process, maintaining its original structure and layers; ensure sample accuracy, segmented and controllable sampling methods, help obtain accurate depth soil samples; simplify operation, the side opening design improves the convenience and efficiency of sample extraction, and reduces operational complexity; flexible adaptability, adjustable system settings and controls enhance the device's ability to cope with diverse and complex operating environments.

[0047] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A soil sampling device for construction engineering, characterized in that: include: A drilling rod (14) and a drill tube (15), wherein the drill tube (15) is installed at the bottom of the drilling rod (14), and the drilling rod (14) drives the drill tube (15) to drill downwards; A sampling push rod (21) and a sampling tube (23) are installed inside the drill tube (15). When the drilling rod (14) drives the drill tube (15) to drill to a predetermined depth, the sampling push rod (21) continues to drive the sampling tube (23) downward to take samples. The sampling cylinder (23) is provided with a plurality of groups of openable and closable partitions (24) at equal intervals. A driving assembly (25) for driving the partitions (24) to open and close is provided on the outside of the sampling cylinder (23). A movable push plate (214) and a pressure sensor (215) are provided on the inner top of the sampling cylinder (23). When a soil sample is sampled downward and gradually fills the interior of the sampling cylinder (23), until the soil sample pushes the movable push plate (214) upward to trigger the pressure sensor (215) to exceed a preset pressure threshold, the driving assembly (25) drives the partitions (24) to close and the soil inside the sampling cylinder (23) is stored in layers.

2. A construction engineering soil sampling device according to claim 1, characterized in that: A matching drill bit (22) is installed at the bottom of the sampling tube (23). The matching drill bit (22) is arranged corresponding to the bottom of the drill tube (15). A center hole is arranged inside the matching drill bit (22). The center hole is aligned with the sampling tube (23). A receiving groove (223) is opened on the side wall of the center hole of the matching drill bit (22). A rotating plate (222) is rotatably installed inside the receiving groove (223) via a rotating shaft (221). A driving member driven by the rotating plate (222) is installed in the receiving groove (223). The rotating plate (222) rotates to change the opening and closing state of the bottom of the center hole. When the drill tube (15) drills to a predetermined depth, the center hole is opened so that the sampling tube (23) can take samples.

3. A construction engineering soil sampling device according to claim 1 or 2, characterized in that: The separator (24) is configured as an iris mechanism, a plurality of groups of iris plates that can be opened and closed are arranged at the center of the iris mechanism, and a rotating plate (27) for driving the opening and closing adjustment of the iris plates is arranged on the side of the iris mechanism.

4. A construction engineering soil sampling device according to claim 3, characterized in that: An outer protective tube (26) is installed outside the sampling tube (23), the partition (24) and the drive assembly (25) are installed on the outer protective tube (26), and the piston rod of the sampling push rod (21) is fixedly connected to the top of the outer protective tube (26).

5. A construction engineering soil sampling device according to claim 4, characterized in that: The driving assembly (25) comprises a driving push rod (210), wherein the driving push rod (210) is rotatably mounted on a side of an outer casing (26), and a plurality of rotating plates (27) of the iris mechanism are connected via a rotating rod (28), a rotating sleeve (29) is provided on the rotating rod (28), and a piston rod of the driving push rod (210) is fixedly connected to the rotating sleeve (29).

6. A construction engineering soil sampling device according to claim 1, characterized in that: The movable push plate (214) is slidably mounted inside the sampling cylinder (23); a pressure sensor (215) is mounted on the inner top of the sampling cylinder (23) via a mounting plate (211); and a contact plate (217) is connected to the bottom of the pressure sensor (215) via a buffer spring (216).

7. A construction engineering soil sampling device according to claim 6, characterized in that: The movable push plate (214) is connected to a first positioning rod (212), the first positioning rod (212) is slidably plugged into the top of the sampling barrel (23), the top of the mounting plate (211) is connected to a second positioning rod (213), the second positioning rod (213) is slidably plugged into the top of the sampling barrel (23), the top of the mounting plate (211) is rotatably connected to an adjusting screw (218), the adjusting screw (218) is threadedly mounted on the top of the sampling barrel (23), and the position of the pressure sensor (215) can be adjusted by rotating the adjusting screw (218) to change the position of triggering a preset pressure threshold.

8. A construction engineering soil sampling device according to claim 7, characterized in that: It comprises a controller and a driving motor, wherein the driving motor can drive the adjusting screw (218) to rotate, the controller is electrically connected to the pressure sensor (215), and the controller controls the operation of the sampling push rod (21), the driving push rod (210) and the driving motor.

9. A construction engineering soil sampling device according to any one of claims 1-2 and 4-8, characterized in that: The sampling cylinder (23) is configured as a cylindrical structure with a side that can be opened; a side plate (261) is rotatably mounted on the side of the sampling cylinder (23) via a rotating hinge (262); and a soil sample can be taken out from the side of the sampling cylinder (23) by opening the side plate (261).

10. A construction engineering soil sampling device according to claim 9, characterized in that: The invention comprises a movable frame (11), wherein the drilling rod (14) is configured as a threaded drilling rod, and a driver (12) and a driving wheel (13) for driving the drilling rod (14) to rotate are mounted on the movable frame (11), and the driving wheel (13) is configured as two sets of gears that mesh with each other, wherein one gear is mounted on an output shaft of the driver (12), and the other gear is provided with an internal threaded hole that matches the thread of the drilling rod (14), and the driver (12) can drive the drilling rod (14) to rotate and drill downward.

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