Foundation rock soil sampling device

Abstract

The utility model relates to the technical field of sampling equipment, in particular to a foundation rock soil sampling device which comprises a handheld frame, a first motor is fixedly mounted on the handheld frame, a guide rod is detachably mounted on an output shaft of the first motor, a sampling barrel is fixed at the lower end of the guide rod, a second motor is embedded in the sampling barrel, and an output shaft of the second motor is fixedly connected with a drill bit. A plurality of through holes are formed in the side wall of the sampling barrel. When a user presses the handheld frame, the first motor drives the sampling barrel to rotate through the guide rod to drill into a soil layer, meanwhile, the second motor drives the drill bit to rotate, a soil sample compressed into the sampling barrel is drilled open, moves upwards along the drill bit and leaks outwards from the through hole in the side wall of the sampling barrel until the depth required by sampling is reached, and the second motor is closed; at the moment, the required soil sample is compressed in the sampling barrel, so that a relatively complete soil sample can be obtained, and the drill bit is matched with the sampling barrel, so that complete sampling of the soil samples of soil layers with different depths is completed, and the sampling accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling equipment, in particular to a foundation rock and soil sampling device. Background Art

[0002] In order to understand the natural structure, density, natural moisture, shear strength, compression coefficient, bulk density, permeability coefficient and other parameters of the soil layer, researchers took soil samples to determine the water content, permeability, bearing capacity and stability of the soil layer.

[0003] As for sampling of rock and soil layers, due to the hard geology, the rotary impact method can be used, which is mainly carried out using a soil extractor. The soil extractor mainly includes a motor and a drill bit connected to the motor output shaft. The drill bit is cylindrical and drills the soil layer through reciprocating stirring, and compresses the soil sample in the soil layer into the barrel of the drill bit. After that, the soil layer is taken out from the barrel of the drill bit to obtain a complete soil sample. This method has small sample disturbance and accurate sampling position. However, it should also be pointed out that when the equipment is sampling, the soil sample is compressed into the barrel as soon as the drill bit starts to drill the soil layer until the barrel is full. However, for soil samples with a soil layer depth greater than the height of the barrel, the barrel has been closed, and the lower soil sample cannot enter the barrel, so there is no way to accurately remove it.

[0004] To this end, the utility model provides a foundation rock and soil sampling device to improve the accuracy of obtaining deep soil samples. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and provides a foundation rock soil sampling device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The invention discloses a foundation rock and soil sampling device, comprising an annular handheld frame, a mounting plate is provided at the bottom end of the handheld frame, a first motor is fixedly installed on the mounting plate, a guide rod is detachably installed on the output shaft of the first motor, a sampling tube with an opening at the lower end is fixed at the lower end of the guide rod, a partition is provided at the top of the sampling tube, a second motor is embedded in the partition, the output shaft of the second motor passes through the bottom wall of the partition and is fixedly connected to a drill bit, and a plurality of through holes are provided on the side wall of the sampling tube at the upper end of the drill bit.

[0008] Preferably, a plurality of extension rods are further included to increase the length of the guide rod.

[0009] Preferably, the guide rod and the upper end of the extension rod are both provided with a socket, the upper part of the socket is provided with an internal thread, and the lower end of the extension rod and the output shaft of the first motor are both fixed with a stud that matches the internal thread.

[0010] Preferably, an insertion rod is fixed to the lower end of the stud, a through hole is radially provided on the insertion rod and passes through the insertion rod, a round hole corresponding to the through hole is provided on the side wall of the insertion hole, a screw rod is inserted into the through hole and the round hole, and a nut is threadedly installed on the end of the screw rod.

[0011] Preferably, the drill bit is retracted in the sampling barrel.

[0012] Preferably, the side wall of the sampling tube is provided with a notch, and a sealing plate is detachably installed at the notch.

[0013] Preferably, the sealing plate is designed to be hidden, and the inner wall of the sealing plate fits with the inner wall of the sampling tube, and the outer wall of the sealing plate fits with the outer wall of the sampling tube.

[0014] Preferably, the notch of the sampling tube is fastened to the sealing plate via a plurality of countersunk screws.

[0015] Preferably, the bottom wall of the sampling tube has a plurality of drill teeth in an annular array.

[0016] Compared with the prior art, the utility model provides a foundation rock and soil sampling device, which has the following beneficial effects:

[0017] 1. The user presses the handheld frame hard, and the first motor drives the sampling tube to rotate through the guide rod. The sampling tube begins to break through the soil and penetrate into the soil layer, and the soil sample is compressed into the sampling tube; at the same time, the second motor drives the drill bit to rotate, and the drill bit drills the soil sample compressed into the sampling tube and moves up along the drill bit, and leaks out from the through hole on the side wall of the sampling tube until the required sampling depth is reached. The second motor is turned off. At this time, the required soil sample is compressed in the sampling tube, the first motor is turned off, the sampling tube is pulled out of the rock and soil layer, and then the sealing plate is removed, so that the compressed soil sample can be taken out relatively completely from the notch. Through the cooperation of the drill bit and the sampling tube, the complete sampling of soil samples in soil layers of different depths can be completed, thereby improving the sampling accuracy.

[0018] 2. In the utility model, a plurality of extension rods are provided, and the insertion depth of the guide rod in the soil layer is increased by connecting the extension rods, thereby achieving the purpose of increasing the sampling depth.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0021] Figure 2 It is a front view schematic diagram of the utility model.

[0022] Figure 3It is a cross-sectional schematic diagram of the utility model.

[0023] Figure 4 For the utility model Figure 3 Partial schematic diagram at point A in the middle.

[0024] Figure 5 For the utility model Figure 3 Schematic diagram of the cross section at the middle cylinder.

[0025] Figure 6 For the utility model Figure 5 Partial schematic diagram at point B in the middle.

[0026] Figure 7 It is a front view stereoscopic diagram and a rear view stereoscopic diagram of a sampling tube and a sealing plate of the utility model.

[0027] In the figure: 1. Hand-held frame; 2. First motor; 3. Guide rod; 4. Sampling tube; 5. Second motor; 6. Drill bit; 7. Notch; 8. Closing plate; 9. Countersunk screw; 10. Extension rod; 11. Socket; 12. Stud; 13. Insert rod; 14. Screw; 15. Through hole; 16. Drilling tooth. DETAILED DESCRIPTION

[0028] The following will be combined with the attached embodiment of the utility model Figure 1-7 , the technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0029] Embodiment 1, in order to solve the problems existing in the prior art, this embodiment provides a foundation rock and soil sampling device, including an annular handheld frame 1, a mounting plate is provided at the bottom end of the handheld frame 1, a first motor 2 is fixedly installed on the mounting plate, a guide rod 3 is detachably installed on the output shaft of the first motor 2, a sampling tube 4 with an opening at the lower end is fixed at the lower end of the guide rod 3, a compartment is provided above the sampling tube 4, a second motor 5 is embedded in the compartment, the output shaft of the second motor 5 passes through the bottom wall of the compartment and is fixedly connected to a drill bit 6, the structure of the drill bit 6 refers to the attached Figure 5 As shown, it includes a rod body and an auger spirally distributed along the side wall of the rod body. A plurality of through holes 15 are provided on the side wall of the sampling tube 4 located at the upper end of the drill bit 6.

[0030] The drill bit 6 is retracted in the sampling tube 4 , so that a sampling space is left in the sampling tube 4 .

[0031] The side wall of the sampling tube 4 is provided with a notch 7, and a sealing plate 8 is detachably installed at the notch 7 via a plurality of countersunk screws 9, so as to completely take out the soil sample in the sampling tube 4; and the sealing plate 8 is designed to be hidden, and the inner wall of the sealing plate 8 fits with the inner wall of the sampling tube 4, and the outer wall fits with the outer wall of the sampling tube 4, so as to avoid bulging outward and increasing the hindrance of the sampling tube 4 when drilling in the rock and soil layer.

[0032] The bottom wall of the sampling tube 4 is provided with a plurality of drill teeth 16 in an annular array, and the tip of the drill teeth 16 faces the same direction as the rotation direction of the sampling tube 4 , thereby increasing the sharpness of the sampling tube 4 when drilling in the rock layer and improving the soil breaking ability of the sampling tube 4 .

[0033] The specific use process of this embodiment is as follows:

[0034] The user holds the handheld frame 1, and places the sampling tube 4 vertically to the sampling ground, and starts the first motor 2 and the second motor 5. The first motor 2 drives the sampling tube 4 to rotate through the guide rod 3. The user presses the handheld frame 1 with force, and the sampling tube 4 begins to break through the soil and penetrate into the soil layer, and the soil sample is compressed into the sampling tube 4; at the same time, the second motor 5 is started and drives the drill bit 6 to rotate, and the drill bit 6 drills the soil sample compressed into the sampling tube 4 and moves up along the drill bit 6, and leaks out from the through hole 15 on the side wall of the sampling tube 4 until the required sampling depth is reached, and the second motor 5 is turned off. At this time, the required soil sample is compressed in the sampling tube 4, and the first motor 2 is turned off, and the sampling tube 4 is pulled out of the rock and soil layer, and then the sealing plate 8 is removed, so that the compressed soil sample can be relatively completely taken out from the notch 7, and through the cooperation of the drill bit 6 and the sampling tube 4, the complete sampling of soil samples in soil layers of different depths is completed, thereby improving the sampling accuracy.

[0035] In Example 2, since the length of the guide rod 3 is fixed, when the depth of the sampling soil layer is greater than the guide rod 3, the equipment cannot be used. Therefore, in this embodiment, multiple extension rods 10 are provided to increase the length of the guide rod 3.

[0036] The extension rod 10 has exactly the same structure. The upper ends of the guide rod 3 and the extension rod 10 are both provided with a socket 11, and the upper part of the socket 11 is provided with an internal thread. The lower end of the extension rod 10 and the output shaft of the first motor 2 are both fixed with a stud 12 that matches the internal thread. Through the threaded connection between the stud 12 and the internal thread in the socket 11, multiple extension rods 10, between the guide rod 3 and the extension rod 10, and between the extension rod 10 and the output shaft of the first motor 2 can be detachably connected, thereby achieving the purpose of increasing the sampling depth; and the tightening direction of the thread of the threaded connection is opposite to the rotation direction of the sampling tube 4, so that when the sampling tube 4 rotates and is subjected to force in the soil layer, the interconnected parts will not separate.

[0037] Preferably, a plug rod 13 is fixed to the lower end of the stud 12, and a through hole 15 is radially provided on the plug rod 13 and penetrates the plug rod 13. A round hole corresponding to the through hole 15 is provided on the side wall of the insertion hole 11. A screw rod 14 is inserted into the through hole 15 and the round hole. A nut is threadedly installed on the end of the screw rod 14. The setting of the screw rod 14 increases the connection stability of the connection part, and the length of the screw rod 14 is smaller than the outer diameter of the sampling tube 4, so as to prevent the screw rod 14 from scraping the soil layer and causing the soil layer to collapse when it penetrates into the borehole drilled by the sampling tube 4 in the soil layer, thereby hindering the removal of the sampling tube 4 and also avoiding increasing obstacles to drilling soil sampling.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. Foundation rock and soil sampling device, It is characterized in that The invention comprises an annular handheld frame (1), wherein a mounting plate is provided at the bottom end of the handheld frame (1), a first motor (2) is fixedly mounted on the mounting plate, a guide rod (3) is detachably mounted on the output shaft of the first motor (2), a sampling tube (4) with an opening at the bottom end is fixed at the lower end of the guide rod (3), a compartment is provided at the top of the sampling tube (4), a second motor (5) is embedded in the compartment, the output shaft of the second motor (5) passes through the bottom wall of the compartment and is fixedly connected to a drill bit (6), and a plurality of through holes (15) are provided on the side wall of the sampling tube (4) located at the upper end of the drill bit (6).

2. The foundation rock soil sampling device according to claim 1, It is characterized in that It also includes a plurality of extension rods (10) for increasing the length of the guide rod (3).

3. The ground rock sampling device according to claim 2, It is characterized in that The guide rod (3) and the upper end of the extension rod (10) are both provided with a socket (11), the upper portion of the socket (11) is provided with an internal thread, and a stud (12) matching the internal thread is fixed to the lower end of the extension rod (10) and the output shaft of the first motor (2).

4. The ground rock sampling device according to claim 3, It is characterized in that A plug rod (13) is fixed to the lower end of the stud (12), a through hole (15) penetrating the plug rod (13) is provided radially on the plug rod (13), a circular hole corresponding to the through hole (15) is provided on the side wall of the plug hole (11), a screw rod (14) is inserted into the through hole (15) and the circular hole, and a nut is threadedly mounted on the end of the screw rod (14).

5. The ground rock sampling device according to claim 1, It is characterized in that The drill bit (6) is retracted into the sampling tube (4).

6. The ground rock sampling device according to claim 1, It is characterized in that The side wall of the sampling tube (4) is provided with a notch (7), and a sealing plate (8) is detachably mounted at the notch (7).

7. The ground rock sampling device according to claim 6, It is characterized in that The sealing plate (8) is of concealed design, and the inner wall of the sealing plate (8) fits the inner wall of the sampling tube (4), and the outer wall fits the outer wall of the sampling tube (4).

8. The ground rock sampling device according to claim 6, It is characterized in that The notch (7) of the sampling tube (4) is fastened to the sealing plate (8) via a plurality of countersunk screws (9).

9. The ground rock sampling device according to claim 1, It is characterized in that The bottom wall of the sampling tube (4) has a plurality of drill teeth (16) in an annular array.

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