CN107132070A - Great burying original-state soil sampling device and system - Google Patents

Abstract

The present invention provides a large buried deep undisturbed soil sampling device and system. The device comprises: a handle, a dowel bar with vertical stripes and a drill bit, and the drill bit rotates by turning the handle or the dowel bar; The first through hole through which the force rod passes and a plurality of second through holes axially arranged around the first through hole; the sleeve, the top end of each steel sheet is connected to the platform, and the inner side of each steel sheet is provided with a wedge-shaped structure ; A plurality of steel rods with threads on the upper end pass through the corresponding second through holes, and are connected with the nuts above the second through holes through threads; the inverted wedge-shaped iron ring is located in the sleeve, and when the nut is turned to make the plurality of steel rods When moving upward relative to the sleeve, the inverted wedge-shaped iron ring can engage with the wedge-shaped structure and push the wedge-shaped structure outward, so that multiple steel sheets expand outward away from each other; a pair of oblique thread rods are rotatably arranged on the upper surface of the platform The surface is symmetrically and vertically engaged with the vertical lines of the dowel rod, and the oblique threaded rod is rotated by the rocker, and the dowel rod moves vertically.

Description

Large buried deep undisturbed soil sampling device and system

technical field

The invention relates to the technical field of soil science experimental research equipment, in particular to a large buried deep undisturbed soil sampling device and system.

Background technique

Soil physical parameters and their hydrodynamic characteristic parameters are important basis for studying soil hydrological process. In order to obtain soil physical parameters and its hydrodynamic characteristic parameters, undisturbed soil sampling is generally used. At present, with the large-scale exploitation of groundwater, the buried depth of the groundwater level in the North China Plain has dropped from 2-15m in the 1970s to 8-30m today, and even reached 56m in some areas. Then, the drop of groundwater level has expanded the research depth of soil hydrological process from the original few meters to more than 20 meters or even a larger range.

Then, in the study of soil physical parameters and hydrodynamic characteristic parameters at large buried depths, due to the increase in the buried depth of the groundwater table, the depth to obtain undisturbed soil also increases, and the pressure on the soil will also increase with the increase in depth. The continuous increase will cause the soil under the large buried depth to become more dense, and it will become more difficult to obtain the undisturbed soil.

Current undisturbed soil sampling devices include ring cutter soil drilling drills and gasoline-powered soil sampling drills.

Among them, the ring cutter soil borrowing drill mainly drives the auger bit at the bottom to drill by turning the T-shaped handle on the top. After reaching a certain depth, the auger bit can be replaced with a ring cutter bit to take soil. It is easier to obtain the undisturbed soil within 2m of the ground with this ring-knife soil extraction scheme. For the soil below 2m, the degree of compaction of the soil is relatively large and the degree of compaction increases with the increase of depth. Only by applying a large force to the T-shaped handle can we continue to drill and take soil, which will require a lot of labor for the sampling personnel and the efficiency of taking soil is low.

Gasoline engine-powered earth-boring drills are divided into hammer-type and vibration-type: hammer-type soil-boring drills use gasoline engines to drive hammers to continuously hit the drill pipe to drill; Vibration to achieve the purpose of drilling. Although gasoline-powered earth-borrowing drills can reduce the labor demand for sampling personnel to a certain extent, the overall weight of the entire set of equipment for gasoline-powered earth-borrowing devices is relatively high (for example, as high as 20kg), which makes it inconvenient to carry and purchase soil in the field. .

It can be seen that the large buried deep undisturbed soil sampling devices in the prior art generally have the problems of high difficulty in soil sampling, low efficiency and high cost.

Contents of the invention

The present invention provides a large buried deep undisturbed soil sampling device and system to solve the problems of large buried deep undisturbed soil sampling devices in the prior art that are difficult to sample soil, low in efficiency and high in cost.

In order to solve the above problems, according to one aspect of the present invention, the present invention discloses a large buried deep undisturbed soil sampling device, comprising:

A handle, a dowel bar with vertical stripes and a drill bit connected in sequence, the dowel bar and the drill bit are detachably connected, and the drill bit is rotated by turning the handle or the dowel bar;

Expansion sleeve system, including:

a platform having a first through hole through which the drill bit and the dowel rod pass, and a plurality of second through holes axially disposed around the first through hole;

The sleeve is composed of a plurality of steel sheets surrounding the periphery of the platform, the top of each steel sheet is connected to the platform, and the inner side of each steel sheet is provided with a wedge-shaped structure;

A plurality of steel rods correspond one-to-one to the plurality of second through holes, and the upper ends of the plurality of steel rods have threads, each steel rod passes through the corresponding second through holes, passes through the threads and is located at the The nut connection above the second through hole;

The inverted wedge-shaped iron ring is located in the sleeve, wherein the plurality of steel rods are fixedly connected to the inverted wedge-shaped iron ring on the inner wall of the inverted wedge-shaped iron ring, wherein the position of the inverted wedge-shaped iron ring is the same as The position of the wedges corresponds so that when the nut is turned to move the plurality of steel rods upward relative to the sleeve, the inverted wedge hoop engages the wedges and pushes the wedges together. pushing outwardly, thereby expanding the plurality of steel sheets outwardly away from each other; and

A pair of oblique threaded rods, rotatably arranged on the upper surface of the platform and symmetrically engaged vertically with the vertical lines of the dowel rod, the pair of oblique threaded rods have handles, when passing through the When the handle rotates the oblique threaded rod, the dowel rod can move vertically.

According to another aspect of the present invention, the present invention also discloses a large buried deep undisturbed soil sampling system, comprising:

Connect the dowel bar with vertical stripes and the drill bit in sequence, the dowel bar and the drill bit are detachably connected, and the drill bit rotates by rotating the dowel bar;

Expansion sleeve system, including:

a platform having a first through hole through which the dowel rod passes and a plurality of second through holes axially disposed around the first through hole;

The sleeve is composed of a plurality of steel sheets surrounding the periphery of the platform, the top of each steel sheet is connected to the platform, and the inner side of each steel sheet is provided with a wedge-shaped structure;

A plurality of steel rods correspond one-to-one to the plurality of second through holes, and the upper ends of the plurality of steel rods have threads, each steel rod passes through the corresponding second through holes, passes through the threads and is located at the The nut connection above the second through hole;

The inverted wedge-shaped iron ring is located in the sleeve, wherein the plurality of steel rods are fixedly connected to the inverted wedge-shaped iron ring on the inner wall of the inverted wedge-shaped iron ring, wherein the position of the inverted wedge-shaped iron ring is the same as The position of the wedges corresponds so that when the nut is turned to move the plurality of steel rods upward relative to the sleeve, the inverted wedge hoop engages the wedges and pushes the wedges together. pushing outwardly, thereby expanding the plurality of steel sheets outwardly away from each other; and

The stepping motor includes a main body and an output end, the main body is fixed on the upper surface of the platform, and the output end is connected with a gear, wherein the gear is vertically meshed with the vertical grain of the dowel bar, when When the stepping motor is energized, the output end drives the gear and the dowel rod to rotate.

Compared with the prior art, the present invention includes the following advantages:

The beneficial effects of the present invention are: when using the large buried deep undisturbed soil sampling device of the present invention, when the drill bit drills to a certain depth, the expansion sleeve system can be put into the borehole, and the sleeve can be expanded to be tightly connected with the surrounding soil. Engage, so that the expansion sleeve system is firmly fixed in the soil; then, the drill bit can continue to drill by turning the oblique threaded rod. Compared with directly turning the handle, the solution proposed by the present invention is more labor-saving, reduces the difficulty of sampling deeply buried soil, and thus can improve the efficiency of soil extraction. In addition, the oblique threaded rods arranged symmetrically can be used by two people at the same time, which is more powerful and more efficient for soil removal than one person directly turning the handle.

Description of drawings

Fig. 1 is the schematic diagram of a kind of large burial depth undisturbed soil sampling device according to an embodiment of the present invention;

Figure 2 is an enlarged schematic view of the lower portion of the expansion sleeve system according to one embodiment of the present invention;

Figure 3 is an enlarged schematic view of an upper portion of an expansion sleeve system according to one embodiment of the present invention;

Fig. 4 is according to the top view of the platform of the expansion sleeve system in one embodiment shown in Fig. 1 of the present invention in the large burial depth undisturbed soil sampling device;

Figure 5 is a side view of the platform of the expansion sleeve system according to one embodiment of the present invention;

Fig. 6 is a top view of dowel rods and helical threaded rods engaged with each other according to an embodiment shown in Fig. 1 of the present invention;

Fig. 7 is a schematic diagram of a large buried deep undisturbed soil sampling system according to an embodiment of the present invention;

Fig. 8 is a top view of the platform of the expansion sleeve system in the large buried deep undisturbed soil sampling system according to an embodiment shown in Fig. 7 of the present invention;

Fig. 9 is a schematic diagram of a ring cutter drill bit according to an embodiment of the present invention;

10 is a top view of the intermeshing gear and dowel according to one embodiment of the sampling system shown in FIG. 7 .

detailed description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1 to Fig. 6 and Fig. 9 as a whole, according to one embodiment of the present invention, the undisturbed soil sampling device at a large buried depth includes a handle 1, a dowel bar 2 with vertical stripes and a drill bit 3 (here, an auger bit). The handle 1 can be any type of handle, and the operator drives (for example, rotates) the handle to make the dowel 2 rotate accordingly, and then the drill bit connected to the dowel 2 rotates. The vertical lines on the dowel bar 2 will be described in detail later. The drill bit 3 can be an ordinary helical drill bit, or other types of drill bits with a helical structure on the outer surface. The drill bit 3 can be rotated by turning the handle 1 or the dowel 2, thereby drilling into the soil. Be detachable connection between dowel bar 2 and drill bit 3, when drill bit 3 is auger bit, can utilize auger bit to drill into the sampling depth in the soil, after drilling to a certain depth, in order to take soil easily, can use The helical drill bit is replaced with a ring cutter drill bit with a helical structure on the outer surface as shown in Figure 9, wherein, as can be seen from Figure 9, the ring cutter drill bit has a cylindrical structure with upper and lower openings, and the wall thickness of the lower opening of the ring cutter drill bit is relatively thick. Thin, similar to a knife edge, and, in order to drill down and take soil under the drive of the dowel rod 2, the outer wall of the ring cutter bit in the embodiment of the present invention has a helical texture (ie, a helical structure).

Wherein, in one embodiment, when the ring cutter bit shown in Figure 9 is connected to the dowel bar 2, a cover plate can be set on the upper section of the ring cutter bit, so as to realize the connection between the ring cutter bit and the transmission rod through the cover plate. Connection of lever 2.

Of course, the present invention is not limited to the connection method between the ring cutter bit and the dowel rod, and any connection method in the prior art can be used to realize the connection between the two.

In addition, the large buried deep undisturbed soil sampling device also includes an expansion sleeve system. The expansion sleeve system includes a platform 5 , a sleeve 6 , a plurality of steel rods 7 and an inverted wedge iron ring 8 .

As shown in FIG. 4 , the platform 5 has a first through hole 501 through which the drill bit 3 and the dowel 2 can pass, and a plurality of second through holes 502 axially disposed around the first through hole 501 .

The sleeve 6 consists of a plurality of steel sheets 601 surrounding the periphery of the platform 5 . The length of the steel sheet is optional, and generally can be set to about 2m. The number of steel sheets 601 can be optional, for example, 3, 4, 5 or more. These steel sheets 601 form a cylindrical structure, thereby constituting the sleeve 6 . The overall sleeve diameter is slightly smaller than the borehole diameter so that the sleeve 6 can be put into the borehole. In use, the lower part of the sleeve 6 is placed in the borehole and the upper part is left above the ground. For example, assuming the sleeve is 2m high, the lower 1.5m of the sleeve can be drilled deep into the hole and the upper 0.5m above the ground. The top of each steel sheet 601 is connected to the platform 5 as shown in FIG. 5 , and as shown in FIGS. 1 and 2 , a wedge-shaped structure 602 is provided on the inner side of each steel sheet 601 . It should be understood that the "top end" of the steel sheet referred to here refers to the uppermost part of the steel sheet 601 in the vertical direction when in use. The relative positional relationships such as "upper", "lower", "top", "bottom", and "bottom" mentioned later are also based on the position in the vertical direction during use. In addition, the "inner side" of the steel sheet refers to the inner side of the cylindrical structure (ie, the sleeve 6 ) surrounded by the steel sheet 601 .

The plurality of steel rods 7 are in one-to-one correspondence with the plurality of second through holes 502, that is, the number of steel rods 7 is the same as the number of second through holes 502, and each steel rod 7 has a corresponding first through hole 502. Two through holes 502 . Preferably, in one embodiment, the number of steel rods 7 and second through holes 502 is four. Each steel rod 7 passes through the corresponding second through hole 502 . The upper end of steel rod 7 has screw thread, and the length of screw thread is optional, for example, can be about 10cm, and steel rod 7 passes through this screw thread after passing through corresponding second through hole 502 and is positioned at above this second through hole 502 (that is, platform 5 above) the nut 9 connection.

The inverted wedge-shaped iron ring 8 is located in the sleeve 6, and the diameter of the inverted wedge-shaped iron ring 8 is slightly smaller than the diameter of the sleeve 6 but greater than the diameter of the drill bit 3. As the name implies, the inverted wedge hoop 8 has an inverted wedge shape, which is similar to the shape of a truncated cone, and the diameter of the upper part is smaller than that of the lower part. In addition, as shown in FIG. 2 , the inverted wedge-shaped iron ring 8 is hollow inside and has a structure similar to a cone. The plurality of steel rods 7 are fixedly connected to the inverted wedge-shaped iron ring 8 on the inner wall of the inverted wedge-shaped iron ring 8 .

As shown in FIGS. 1 to 3 , the inverted wedge-shaped iron ring 8 is in a substantially horizontal position. At this time, the steel rod 7 and the inverted wedge-shaped iron ring 8 connected thereto are hung on the platform 5 as a whole through the nut 9 . Wherein, as shown in Figure 4, the diameter of the nut 9 is greater than the diameter of the second through hole 502, so that the nut 9 cannot pass through the second through hole 502, thus playing the role of hanging the steel rod 7 and the inverted wedge-shaped iron ring 8 on the platform 5 The weight of the steel rod 7 and the inverted wedge-shaped iron ring 8 makes the nut 9 tightly engaged with the upper surface of the platform 5 . By turning the nut 9 on the steel rod 7 , the steel rod 7 can move up and down relative to the nut 9 .

As shown in Figures 1 and 2, the position of the inverted wedge-shaped iron ring 8 corresponds to the position of the wedge-shaped structure 602, which requires multiple wedge-shaped structures 602 to be arranged at the same level. When the nut 9 is turned to move the plurality of steel rods 7 upward relative to the sleeve 6, the inverted wedge-shaped iron ring 8 can engage with the wedge-shaped structure 602 and push the sleeve 6 where the wedge-shaped structure 602 is located outward, thereby The plurality of steel sheets 601 are expanded outwardly away from each other. Since the expansion sleeve system is placed in the borehole during use, the outwardly expanded steel sheet 601 will closely bond with the surrounding soil, so that the expansion sleeve system is firmly fixed in the soil, thus ensuring the platform 5 stability.

In addition, as shown in FIGS. 1 and 4 , the undisturbed soil sampling device with a large buried depth also includes a pair of oblique threaded rods 10 . The pair of oblique threaded rods 10 are rotatably arranged on the upper surface of the platform 5 , and the surface of the obliquely threaded rods 10 has oblique threads, so that the obliquely threaded rods 10 can be symmetrically engaged vertically with the vertical lines on the dowel bar 2 . FIG. 6 is a plan view showing the cooperation between the dowel 2 and the obliquely threaded rod 10 . The structure of the vertical lines on the dowel bar 2 can be clearly seen from FIG. 6 . The dowel bar 2 forms a plurality of vertical lines on the outer periphery, and these vertical lines extend along the longitudinal direction of the dowel bar 2 . The cooperation between the oblique threaded rod 10 and the dowel rod 2 is similar to the cooperation between a worm wheel and a worm. The oblique threaded rod 10 has a crank handle 15, and when the oblique threaded rod 10 is rotated by the rocker handle 15, the dowel rod 2 rotates thereupon, thereby turning the rotational force on the horizontal plane applied by the original driving handle by 90° to be changed by The rotational force in the vertical plane applied by the rocker 15. Since the dowel 2 is connected to the drill bit 3, the rotation of the dowel 2 causes the rotation of the drill bit 3, thereby continuing to drill in or out, and the dowel 2 thus exhibits a movement in the vertical direction.

The beneficial effect of this embodiment is that when the handle 1 is used to drive the drill bit 3 to rotate to drill into the soil to a certain depth, since the density of the soil becomes larger, it will be very laborious to drive the handle manually. At this time, the expansion sleeve system can be put into the drill hole, and by turning the nut 9, the plurality of steel rods 7 move upward relative to the sleeve 6, and the inverted wedge-shaped iron ring 8 can engage with the wedge-shaped structure 602 and push the wedge-shaped The structure 602 is pushed outward, so that the plurality of steel sheets 601 expand outward away from each other, and then tightly bond with the surrounding soil, so that the expansion sleeve system is firmly fixed in the soil, thereby ensuring the stability of the platform 5 sex. The stability of the platform 5 can ensure that the rotation of the helical threaded rod is better transmitted to the dowel rod. At this time, the drill bit 3 (such as a ring cutter bit) can continue to drill through the oblique threaded rod 10 arranged symmetrically in rotation. Compared with directly turning the handle, this structure saves labor, reduces the difficulty of sampling the soil with a large buried depth, and thus can improve the efficiency of soil extraction. In addition, the symmetrically arranged oblique threaded rod 10 can be used by two people at the same time, which is more powerful than one person directly turning the handle, and the soil removal efficiency is higher.

The handle 1 and the dowel bar 2 with vertical stripes can be an integral structure. Preferably, the handle 1 and the dowel rod 2 with vertical stripes are detachably connected so that they are separated from each other when not in use for easy portability and assembled together when needed.

In a preferred embodiment, the undisturbed soil sampling device at a large buried depth of the present invention may further include at least one connecting rod 4 located between the dowel rod 2 and the drill bit 3 . The length of the connecting rod can be freely selected, for example, each connecting rod is 1m. The quantity of connecting rod 4 can be increased or decreased with the variation of the drilling depth, so that even if the drilling depth is very large, dowel rod 2 does not need to be made very long, so that both dowel rod 2 and connecting rod 4 can have The relatively small length is not only easy to use, but also convenient to carry. The connection between the dowel rod 2 , the at least one connecting rod 4 and the drill bit 3 can be realized through the connection and cooperation of the pin groove 16 . This pin-slot fit is clearly shown in Figure 1 . For example, a pin can be set on the dowel bar 2, and a groove cooperating with the pin can be set on the connecting rod connected with the dowel bar 2; The pin that cooperates with this groove is set on the connecting rod 4 that connects. The cross-sections of the pin and the groove can both be rectangular, and can also be other shapes convenient for torque transmission, for example, cross-shaped.

The above-mentioned pin-groove fit can also be adopted between the handle 1 and the dowel bar 2 . In addition, the above-mentioned handle is preferably a T-shaped handle. The T-shaped handle is a planar structure, which has the advantages of small size and easy portability. In addition, the handle may also be other types of handles, for example, a handle similar to a steering wheel of a car, or a cross-shaped handle.

In a preferred embodiment, as shown in FIG. 3 , the undisturbed soil sampling device with a large buried depth also includes a fixed ring 11 sleeved on the outer upper part of the sleeve 6, wherein the fixed ring 11 is located on the inverted wedge-shaped iron ring. 8 above. Specifically as shown in FIG. 1 and FIG. 3 , in use, the fixing ring 11 is usually located above the ground, while the inverted wedge-shaped iron ring 8 and the corresponding wedge-shaped structure 602 are usually located below the ground. When the sleeve 6 expands, the fixing ring 11 can play a role similar to a lever fulcrum, so that when the lower part of the sleeve 6 expands outwards, the upper part of the sleeve 6 (steel sheet 601) can be tightly attached to such as The side wall 503 of the platform 5 shown in FIG. 5 increases the stability of the platform 5 .

In order to additionally increase the stability of the platform 5, in a preferred embodiment, as shown in Figure 5, the lower part of the platform 5 is retracted relative to the upper part of the platform 5 so that the platform 5 is a stepped cylindrical structure as shown in Figure 5, said The top ends of the plurality of steel pieces 601 are bent at 90 degrees and joined to the upper bottom surface of the platform 5 . Such a structure can achieve better support for the platform 5 in the vertical direction.

In another preferred embodiment, the platform 5 includes a first part 504 and a second part 505 , that is, as shown in FIG. 4 , the platform 5 is composed of two parts. Fig. 4 shows that the platform 5 is composed of two semicircular parts, but this is not essential, and the first part and the second part can also be in other shapes. The first part and the second part are hinged to each other at one end and are detachably connected at the other end by a fixing buckle 12 , and the pair of oblique threaded rods 10 are respectively arranged on the first part 504 and the second part 505 . The hinge between the first part and the second part can be formed on the side, so that the first part and the second part can move along the direction of the arrow as shown in Figure 4, approach each other, and finally close together, connected by the fixing buckle 12; Movements in the opposite direction to the arrows open each other. The advantage of this structure is that the degree of engagement between the pair of oblique threaded rods 10 on the platform and the dowel rod can be flexibly adjusted through the closing degree of the platform to achieve the best force transmission effect.

Referring to Fig. 4, in a preferred embodiment, the helical threaded rod 10 includes a first end 10a and a second end 10b with a smooth surface, bearings are sleeved on the first end 10a and the second end 10b, and the first end The bearing on 10 a is connected to the upper surface of the platform 5 by a hinge 13 , and the bearing on the second end 10 b is connected to the upper surface of the platform 5 by a folding buckle 14 . Such a structure enables the oblique threaded rod 10 to be detachably fixed to the platform 5, which is convenient for use and portability. The handle 15 is disposed on the second end 10b of the obliquely threaded rod 10 . The oblique threaded rod 10 can be driven to rotate by shaking the handle 15 . The crank handle 15 and the oblique threaded rod 10 can be of an integral structure, and can also form a detachable connection with the oblique threaded rod 10, for example, through a pin-groove fit. The use of rocking handle 15 can greatly save effort.

In a preferred embodiment, as shown in FIG. 1 , the expansion sleeve system includes a plurality of wedge-shaped structures 602 arranged at predetermined intervals on the inner side of each steel sheet and cooperates with the plurality of wedge-shaped structures 602 A plurality of inverted wedge iron rings 8. For example, the predetermined interval may be 0.5m, 0.2m, etc. By arranging a plurality of inverted wedge-shaped iron rings 8 and a plurality of wedge-shaped structures 602 matched therewith, the expansion sleeve system can be expanded more uniformly, and the connection with the soil is tighter, thereby making the platform 5 more stable. Preferably, on the basis of this embodiment, the distance between the plurality of wedge-shaped structures 602 distributed on each steel sheet decreases gradually from bottom to top. This enables a more uniform expansion of the expansion sleeve system.

The example sampling and use steps of the large buried deep undisturbed soil sampling device of an embodiment of the present invention are shown below:

1. Check the integrity of each component of the device;

2. Within the depth range of 2m below the ground, the soil is relatively loose. Assemble the device into an existing conventional soil-borrowing drill, and directly use the auger drill to drill holes. After drilling to a certain depth, you can directly pull out the drill for sampling or replace the ring cutter drill for sampling. ;

3. After the depth exceeds 2m, due to the gradual strengthening of the soil density, it is relatively difficult to drill holes and take soil. At this time, the conventional soil borrow drill is assembled into a sleeve soil drill. Put the barrel system into the drill hole, connect the steel sheet with the platform of the expansion sleeve through bolts, turn the nut 9 connected to the steel rod 7 on the expansion sleeve platform 5, drive the steel rod 7 to move upwards, and pull the inverted wedge-shaped iron ring 8 , to expand the sleeve 6, firmly fix the sleeve 6 in the borehole and stabilize the expansion sleeve platform 5;

4. Adjust and tighten the fixing buckle 12 to fix the oblique screw rod 10, so that the oblique thread rod 10 is engaged with the dowel rod 2, and the rocker 15 is connected with the oblique thread rod 10;

5. When the handle is turned clockwise, the drill bit 3 (here is the auger bit) drills downward; when the required soil depth is drilled, turn the handle 15 counterclockwise to lift the drill bit 3, or the folding buckle Loosen to separate the oblique threaded rod 10 from the transmission rod 2, manually extract the drill pipe directly, and lift the drill bit out;

6. Lift the drill bit to the outside of the platform, remove the soil in the drill bit, then replace the auger bit 3 shown in Figure 1 with the ring cutter bit shown in Figure 9 and put it into the hole drilled by the auger bit, and continue Take soil to obtain large buried deep soil samples;

7. Put the taken soil sample into the sample box for standby;

8. Repeat steps 2-7 to obtain all soil samples;

9. After the soil is taken, the equipment is disassembled and maintained, and then packed.

Referring to Figures 7 to 10, Figures 2 to 3 and Figure 5 as a whole, according to an embodiment of the present invention, a large buried deep undisturbed soil sampling system is provided, and the large buried deep undisturbed soil sampling system includes:

Dowel 2 and drill bit 3 (here an auger bit) with vertical stripes. Rotation of the dowel bar 2 rotates the drill bit 3 connected to the dowel bar 2 . The vertical lines on the dowel bar 2 will be described in detail later. The drill bit 3 can be an ordinary helical drill bit, or other types of drill bits with a helical structure on the outer surface. The drill bit 3 can be rotated by rotating the dowel rod 2, thereby drilling into the soil. Be detachable connection between dowel bar 2 and drill bit 3, when drill bit 3 is auger bit, can utilize auger bit to drill into the sampling depth in the soil, after drilling to a certain depth, in order to take soil easily, can use The helical drill bit is replaced with a ring cutter drill bit with a helical structure on the outer surface as shown in Figure 9, wherein, as can be seen from Figure 9, the ring cutter drill bit has a cylindrical structure with upper and lower openings, and the wall thickness of the lower opening of the ring cutter drill bit is relatively thick. Thin, similar to a knife edge, and, in order to drill down and take soil under the drive of the dowel rod 2, the outer wall of the ring cutter bit in the embodiment of the present invention has a helical texture (ie, a helical structure).

Wherein, in one embodiment, when the ring cutter drill bit shown in Fig. 9 is connected with the dowel bar 2, a cover plate can be set on the upper section of the ring cutter drill bit, so as to realize the connection between the ring cutter drill bit and the ring cutter drill bit through the cover plate. Rod 4 connection.

Of course, the present invention is not limited to the connection method between the ring cutter bit and the connecting rod 4 , and any connection method in the prior art can be used to realize the connection between the two.

In addition, the large buried depth undisturbed soil sampling system also includes an expansion sleeve system. The expansion sleeve system includes a platform 5 , a sleeve 6 , a plurality of steel rods 7 and an inverted wedge iron ring 8 .

The platform 5 has a first through hole 501 through which the drill bit 3 and the dowel 2 can pass, and a plurality of second through holes 502 axially arranged around the first through hole 501 .

The sleeve 6 consists of a plurality of steel sheets 601 surrounding the periphery of the platform 5 . The length of the steel sheet is optional, and generally can be set to about 2m. The number of steel sheets 601 can be optional, for example, 3, 4, 5 or more. These steel sheets 601 form a cylindrical structure, thereby constituting the sleeve 6 . The overall sleeve diameter is slightly smaller than the borehole diameter so that the sleeve 6 can be put into the borehole. In use, the lower part of the sleeve 6 is placed in the borehole and the upper part is left above the ground. For example, assuming the sleeve is 2m high, the lower 1.5m of the sleeve can be drilled deep into the hole and the upper 0.5m above the ground. The top of each steel sheet 601 is connected to the platform 5 as shown in FIG. 5 , and as shown in FIG. 7 and FIG. 2 , a wedge-shaped structure 602 is provided on the inner side of each steel sheet 601 . It should be understood that the "top end" of the steel sheet referred to here refers to the uppermost part of the steel sheet 601 in the vertical direction when in use. The relative positional relationships such as "upper", "lower", "top", "bottom", and "bottom" mentioned later are also based on the position in the vertical direction during use. In addition, the "inner side" of the steel sheet refers to the inner side of the cylindrical structure (ie, the sleeve 6 ) surrounded by the steel sheet 601 .

The plurality of steel rods 7 are in one-to-one correspondence with the plurality of second through holes 502, that is, the number of steel rods 7 is the same as the number of second through holes 502, and each steel rod 7 has a corresponding first through hole 502. Two through holes 502 . Preferably, in one embodiment, the number of steel rods 7 and second through holes 502 is four. Each steel rod 7 passes through the corresponding second through hole 502 . The upper end of steel rod 7 has screw thread, and the length of screw thread is optional, for example, can be about 10cm, and steel rod 7 passes through this screw thread after passing through corresponding second through hole 502 and is positioned at above this second through hole 502 (that is, platform 5 above) the nut 9 connection.

The inverted wedge-shaped iron ring 8 is located in the sleeve 6, and the diameter of the inverted wedge-shaped iron ring 8 is slightly smaller than the diameter of the sleeve 6 but greater than the diameter of the drill bit 3. As the name implies, the inverted wedge hoop 8 has an inverted wedge shape, which is similar to the shape of a truncated cone, and the diameter of the upper part is smaller than that of the lower part. In addition, as shown in FIG. 2 , the inverted wedge-shaped iron ring 8 is hollow inside and has a structure similar to a cone. The plurality of steel rods 7 are fixedly connected to the inverted wedge-shaped iron ring 8 on the inner wall of the inverted wedge-shaped iron ring 8 .

As shown in FIG. 7 and FIGS. 2-3 , the inverted wedge-shaped iron ring 8 is in a substantially horizontal position. At this time, the steel rod 7 and the inverted wedge-shaped iron ring 8 connected thereto are hung on the platform 5 as a whole through the nut 9 . Wherein, as shown in Figure 8, the diameter of the nut 9 is greater than the diameter of the second through hole 502, so that the nut 9 cannot pass through the second through hole 502, thus playing the role of hanging the steel rod 7 and the inverted wedge-shaped iron ring 8 on the platform 5 The weight of the steel rod 7 and the inverted wedge-shaped iron ring 8 makes the nut 9 tightly engaged with the upper surface of the platform 5 . By turning the nut 9 on the steel rod 7 , the steel rod 7 can move up and down relative to the nut 9 .

As shown in FIG. 7 and FIG. 2 , the position of the inverted wedge-shaped iron ring 8 corresponds to the position of the wedge-shaped structure 602 , which requires multiple wedge-shaped structures 602 to be arranged at the same level. When the nut 9 is turned to move the plurality of steel rods 7 upward relative to the sleeve 6, the inverted wedge-shaped iron ring 8 can engage with the wedge-shaped structure 602 and push the sleeve 6 where the wedge-shaped structure 602 is located outward, thereby The plurality of steel sheets 601 are expanded outwardly away from each other. Since the expansion sleeve system is placed in the borehole during use, the outwardly expanded steel sheet 601 will closely bond with the surrounding soil, so that the expansion sleeve system is firmly fixed in the soil, thus ensuring the platform 5 stability.

In addition, as shown in Figure 7, the large buried depth undisturbed soil sampling system also includes: a stepper motor 18, including a main body 101 and an output end 102, the main body 101 is fixed on the upper surface of the platform 5, and the output end 102 is connected with a gear 17, wherein, as shown in FIG. The gear 17 and the dowel rod 2 rotate. Since the dowel 2 is connected to the drill bit 3, the rotation of the dowel 2 causes the rotation of the drill bit 3, thereby continuing to drill in or out, and the dowel 2 thus exhibits a movement in the vertical direction.

The beneficial effect of this embodiment is that: when the expansion sleeve system is put into the drill hole, by turning the nut 9, the plurality of steel rods 7 move upward relative to the sleeve 6, and the inverted wedge-shaped iron ring 8 can engage with the wedge-shaped structure 602 and The wedge-shaped structure 602 is pushed outward, so that the plurality of steel sheets 601 expand outward away from each other, and then tightly bond with the surrounding soil, so that the expansion sleeve system is firmly fixed in the soil, thereby ensuring Platform 5 stability. The stability of the platform 5 can ensure that the rotation of the gear 17 of the stepping motor 18 is better transmitted to the dowel. At this time, the gear 17 of the output end 102 of the stepper motor 18 can be turned on by turning on the power supply of the stepper motor 18, and the dowel 2 meshed with the gear 17 is driven to rotate, and then the dowel 2 connected with the dowel 2 is rotated. The drill bit 3 on the helical surface continues to drill. The use of the stepper motor 18 not only reduces the manpower operation and improves the soil removal efficiency, but also the embodiment of the present invention can also determine the drilling/drilling distance of the ring cutter bit per rotation of the gear 17 according to the thread pitch of the ring cutter bit, In this way, the drill bit can be drilled in and taken out reasonably by precisely controlling the number of rotations of the stepping motor, so that the ring cutter bit is just filled with soil samples, and the control of the amount of soil taken is more precise. The use of the device not only reduces the difficulty of sampling the soil with a large buried depth, improves the efficiency of soil extraction, but also makes the control of the sampling depth more accurate.

In a preferred embodiment, the large buried depth undisturbed soil sampling system of the present invention may further include at least one connecting rod 4 located between the dowel rod 2 and the drill bit 3 . The length of the connecting rod can be freely selected, for example, each connecting rod is 1m. The quantity of connecting rod 4 can be increased or decreased with the variation of the drilling depth, so that even if the drilling depth is very large, dowel rod 2 does not need to be made very long, so that both dowel rod 2 and connecting rod 4 can have The relatively small length is not only easy to use, but also convenient to carry. The connection between the dowel rod 2 , the at least one connecting rod 4 and the drill bit 3 can be realized through the connection and cooperation of the pin groove 16 . This pin-slot fit is clearly shown in FIG. 7 . For example, a pin can be set on the dowel bar 2, and a groove cooperating with the pin can be set on the connecting rod connected with the dowel bar 2; The pin that cooperates with this groove is set on the connecting rod 4 that connects. The cross-sections of the pin and the groove can both be rectangular, and can also be other shapes convenient for torque transmission, for example, cross-shaped.

In a preferred embodiment, as shown in FIG. 3 , the large buried depth undisturbed soil sampling system also includes a fixed ring 11 sleeved on the outer upper part of the sleeve 6, wherein the fixed ring 11 is positioned on the inverted wedge-shaped iron ring. 8 above. Specifically as shown in FIG. 7 and FIG. 3 , in use, the fixing ring 11 is usually located above the ground, while the inverted wedge-shaped iron ring 8 and the corresponding wedge-shaped structure 602 are usually located below the ground. When the sleeve 6 expands, the fixing ring 11 can play a role similar to a lever fulcrum, so that when the lower part of the sleeve 6 expands outwards, the upper part of the sleeve 6 (steel sheet 601) can be tightly attached to such as The side wall 503 of the platform 5 shown in FIG. 5 increases the stability of the platform 5 .

In order to additionally increase the stability of the platform 5, in a preferred embodiment, as shown in Figure 5, the lower part of the platform 5 is retracted relative to the upper part of the platform 5 so that the platform 5 is a stepped cylindrical structure as shown in Figure 5, said The top ends of the plurality of steel pieces 601 are bent at 90 degrees and joined to the upper bottom surface of the platform 5 . Such a structure can achieve better support for the platform 5 in the vertical direction.

Optionally, the inner diameter of the first through hole 501 of the platform 5 is larger than the outer diameter of the dowel 2 , and the difference between the inner diameter and the outer diameter is a predetermined size (for example, 1 cm˜2 cm). This can ensure the stability of the dowel 2 when the gear 17 is engaged with the dowel 2 .

Optionally, in order to further ensure the stability of the dowel rod in the process of the gear driving the dowel rod to rotate, the number of stepper motors 18 as shown in FIG. 7 can also be multiple, and a plurality of stepper motors 18 are symmetrical fixed on the upper surface of the platform 5.

In another preferred embodiment, the platform 5 includes a first part 504 and a second part 505 , that is, as shown in FIG. 8 , the platform 5 is composed of two parts. Fig. 8 shows that the platform 5 is composed of two semicircular parts, but this is not essential, and the first part and the second part can also be in other shapes. The first part and the second part are hinged to each other at one end by a hinge 20 and are detachably connected at the other end by a fastening buckle 12 . The hinge between the first part and the second part can be formed on the side, so that the first part and the second part can move along the direction of the arrow as shown in Figure 8, approach each other, and finally close together, connected by the fixing buckle 12; Movements in the opposite direction to the arrows open each other. This detachable platform structure can be disassembled when the helical drill bit is drilled to a certain depth and needs to be replaced with a ring cutter drill bit (because the first through hole is slightly smaller than the outer diameter of the drill bit). Thereby replacing the drill bit, and carrying out operations such as soil extraction.

In a preferred embodiment, as shown in FIG. 7 , the expansion sleeve system includes a plurality of wedge-shaped structures 602 arranged at predetermined intervals on the inner side of each steel sheet and cooperates with the plurality of wedge-shaped structures 602 A plurality of inverted wedge iron rings 8. For example, the predetermined interval may be 0.5m, 0.2m, etc. By arranging a plurality of inverted wedge-shaped iron rings 8 and a plurality of wedge-shaped structures 602 matched therewith, the expansion sleeve system can be expanded more uniformly, and the connection with the soil is tighter, thereby making the platform 5 more stable. Preferably, on the basis of this embodiment, the distance between the plurality of wedge-shaped structures 602 distributed on each steel sheet decreases gradually from bottom to top. This enables a more uniform expansion of the expansion sleeve system.

The example sampling and use steps of the large buried deep undisturbed soil sampling system of an embodiment of the present invention are shown below:

1. Check the integrity of each component of the system;

2. Within the depth range of 2m below the ground, the soil is relatively loose. Install a T-shaped handle on the top of the dowel bar 2, assemble it into an existing conventional soil borrow drill, and directly use the auger bit to drill holes. After drilling to a certain depth, you can directly pull Take out the drill bit for sampling or replace the ring cutter drill bit shown in Figure 9 in the embodiment of the present invention for sampling;

3. After the depth exceeds 2m, due to the gradual strengthening of the soil density, it is relatively difficult to drill holes and take soil. At this time, the conventional soil borrow drill is assembled into a sleeve soil drill. Put the barrel system into the drill hole, connect the steel sheet with the platform of the expansion sleeve through bolts, turn the nut 9 connected to the steel rod 7 on the expansion sleeve platform 5, drive the steel rod 7 to move upwards, and pull the inverted wedge-shaped iron ring 8 , to expand the sleeve 6, firmly fix the sleeve 6 in the borehole and stabilize the expansion sleeve platform 5;

4. Turn on the power supply of the stepper motor 18 to rotate the output end 102 of the stepper motor 18, thereby driving the gear 17 installed on the output end 102 to mesh with the vertical lines on the dowel bar 2, and make the gear 17 and the force transmission The rod 2 rotates and drives the auger bit to continue drilling, and the drilling distance of the auger bit is controlled by precisely controlling the number of rotations of the stepping motor 18;

5. When drilling to the required soil depth, the direction level signal of the control system of the stepper motor 18 can be changed or the direction of the signal input by the stepper motor 18 can be changed by adjusting the wiring of the stepper motor 18, so that the The auger bit is lifted up, and when it is about to approach the platform, the stepper motor 18 is turned off, and the platform 5 is disassembled, and the auger bit is taken out;

6. Lift the auger bit to the outside of the platform, remove the soil in the auger bit, then replace the auger bit shown in Figure 7 with a ring cutter bit and put it into the hole drilled by the auger bit, install the platform, and start the step Advance motor 18, input the signal of original direction, by precisely controlling the number of rotations of stepper motor 18, when carrying out earth taking with the ring cutter bit shown in Figure 9 like this, just can control ring cutter every time according to the height of ring cutter The drilling distance for sampling;

7. Input the signal in the opposite direction, lift the drill bit up, close the stepper motor 18 when it is close to the platform 5, and disassemble the platform 5, take out the ring cutter bit, get the soil sample and put the taken soil sample into the sample spare in the box;

8. Repeat steps 2-7 to obtain all soil samples;

9. After the soil is taken, the equipment is disassembled and maintained, and then packed.

In addition, the above-mentioned large buried depth undisturbed soil sampling device and system in the embodiment of the present invention can not only be used for soil sampling in a large buried depth environment, but also can be applied to places that need to be compacted, such as foundations, earth-rock dams, etc., to facilitate soil sampling. earth.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

Having described preferred embodiments of embodiments of the present invention, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the embodiments of the present invention.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or end-equipment. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

Above, a kind of big burial deep undisturbed soil sampling device and system provided by the present invention have been introduced in detail. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above examples is only used to help Understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification is not It should be understood as a limitation of the present invention.

Claims (10)

1. a kind of great burying original-state soil sampling device, it is characterised in that including：

The handle being sequentially connected, transmission rod and drill bit with vertical line, to be detachably connected between the transmission rod and the drill bit, The drill bit is rotated by rotating the handle or the transmission rod；

Sleeve system is expanded, including：

Platform, the first through hole passed through with the permission drill bit, the transmission rod and the circular first through hole are axially set Multiple second through holes put；

Sleeve, is made up of, the top of each steel disc is connected with the platform multiple steel discs of the periphery around the platform, and The inner side of each steel disc is provided with wedge structure；

Many steel poles, are corresponded with the multiple second through hole, and the upper end of many steel poles has screw thread, every steel Bar passes through corresponding second through hole, is connected by the screw thread with the nut above second through hole；

Reverse wedge shape iron hoop, in the sleeve, wherein, many steel poles the reverse wedge shape iron hoop inwall with it is described fall Wedge-shaped iron hoop is fixedly connected, wherein, the position of the reverse wedge shape iron hoop is corresponding with the position of the wedge structure so that work as rotation When the nut is so that the relatively described sleeve of many steel poles is moved upwards, the reverse wedge shape iron hoop can be tied with the wedge shape Structure engages and outwards push the wedge structure open, so that the multiple steel disc outwards expands away from each other；And

A pair of oblique threaded rods, are rotatably arranged in the upper surface of the platform and the symmetrically vertical line with the transmission rod Vertical Meshing, the pair of oblique threaded rod has rocking handle, when rotating the oblique threaded rod by the rocking handle, the power transmission Bar can be vertically moving.

2. great burying original-state soil sampling device according to claim 1, it is characterised in that also include：

At least one connecting rod between the transmission rod and the drill bit, the transmission rod, at least one described connection Coordinated between bar and the drill bit by cotter way and realize connection.

3. great burying original-state soil sampling device according to claim 1, it is characterised in that also include：It is set in described The retainer ring of sleeve outer upper, wherein, the retainer ring is located above the reverse wedge shape iron hoop.

4. great burying original-state soil sampling device according to claim 1, it is characterised in that the platform includes first Point and Part II, the Part I and the Part II are mutually hinged at one end and formed in the other end by clip It is detachably connected, the pair of oblique threaded rod is separately positioned on the Part I and the Part II.

5. great burying original-state soil sampling device according to claim 1, it is characterised in that the expansion sleeve system bag Include and match somebody with somebody in the inner side of each steel disc with the spaced multiple wedge structures of preset distance and with the multiple wedge structure The multiple reverse wedge shape iron hoops closed.

6. great burying original-state soil sampling device according to claim 5, it is characterised in that be distributed on each steel disc Spacing distance between multiple wedge structures is gradually reduced from top to bottom.

7. great burying original-state soil sampling device according to claim 1, it is characterised in that the oblique threaded rod includes tool Have and be arranged with first end and the second end of smooth surface, the first end and second end in bearing, the first end The bearing that bearing is connected to by hinged joint on the upper surface of the platform, second end is connected to the platform by folding fastener Upper surface, the rocking handle is arranged on second end of the oblique threaded rod.

8. great burying original-state soil sampling device according to claim 1, it is characterised in that the handle is erected with the band It is to be detachably connected between the transmission rod of line.

9. great burying original-state soil sampling device according to claim 1, it is characterised in that the bottom of the platform is relative The top of the platform is inside contracted so that the top of each in the stepped cylindrical structure of the platform, the multiple steel disc is curved 90 degree of folding is simultaneously engaged with the bottom surface on the top of the platform.

10. a kind of great burying original-state soil sampling system, it is characterised in that including：

Transmission rod and drill bit with vertical line are sequentially connected, it is described to bore to be detachably connected between the transmission rod and the drill bit Head is rotated by rotating the transmission rod；

Sleeve system is expanded, including：

Platform, with allow first through hole that the transmission rod passes through and around the first through hole it is axially arranged multiple the Two through holes；

Sleeve, is made up of, the top of each steel disc is connected with the platform multiple steel discs of the periphery around the platform, and The inner side of each steel disc is provided with wedge structure；

Many steel poles, are corresponded with the multiple second through hole, and the upper end of many steel poles has screw thread, every steel Bar passes through corresponding second through hole, is connected by the screw thread with the nut above second through hole；

Reverse wedge shape iron hoop, in the sleeve, wherein, many steel poles the reverse wedge shape iron hoop inwall with it is described fall Wedge-shaped iron hoop is fixedly connected, wherein, the position of the reverse wedge shape iron hoop is corresponding with the position of the wedge structure so that work as rotation When the nut is so that the relatively described sleeve of many steel poles is moved upwards, the reverse wedge shape iron hoop can be tied with the wedge shape Structure engages and outwards push the wedge structure open, so that the multiple steel disc outwards expands away from each other；And

Stepper motor, including main body and output end, the main body are fixed on the upper surface of the platform, and the output end is connected with Gear, wherein, the vertical line Vertical Meshing of the gear and the transmission rod is described defeated when the stepper motor is powered Going out end drives the gear and the transmission rod to rotate.