A sampling tube and a sampling device for engineering geological survey

Abstract

The utility model relates to a kind of sampling pipe and sampling device for engineering geological survey, including pipe body, multiple extrusion components are installed in the pipe body, multiple the extrusion components are evenly distributed around the central axis of pipe body;Each the extrusion component includes support seat fixedly connected on the inner wall of the both ends of pipe body respectively, two the support seat are respectively hinged with first connecting rod and second connecting rod, third connecting rod is hinged between the first connecting rod and second connecting rod;Multiple the first connecting rod is fixedly connected with pull cord at the end away from pipe body. It is to provide a kind of sampling pipe and sampling device for engineering geological survey, to solve the problem of low efficiency in the prior art in deeper sandy soil layer, need to be inserted into sandy soil layer soil by tubular body in advance to form retaining wall, then a certain depth of sandy soil sample is obtained by suction or mechanical scraping mode.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering exploration equipment technology, specifically to a sampling tube and sampling device for engineering geological exploration. Background Technology

[0002] In engineering geological exploration, accurately obtaining underground soil and rock samples is a crucial prerequisite for assessing the bearing capacity, permeability, and stability of the foundation. Traditional sampling devices (such as thin-walled soil samplers and piston soil samplers) are mainly designed for cohesive or dense soil layers. Their working principle relies on the cohesion of the soil and the frictional resistance between the sidewall of the sampling device and the soil. The tube is pressed into the soil layer by static pressure or impact to extract soil samples at a set depth.

[0003] However, due to the lack of cohesion between sandy soil particles, high permeability, and loose structure, traditional sampling devices can only sample the surface layer of sand. For deeper sandy soil layers (such as below 1 meter underground), a tubular body needs to be pre-inserted into the sandy soil to form a protective wall, and then sand samples at a certain depth are obtained by suction or mechanical scraping. This process is cumbersome and inefficient. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a sampling tube and sampling device for engineering geological exploration, so as to solve the problem of low efficiency in the existing technology for deeper sandy soil strata, which requires the tube to be pre-inserted into the sandy soil to form a protective wall, and then the sandy soil sample to a certain depth is obtained by suction or mechanical scraping.

[0005] This utility model is achieved through the following technical solution:

[0006] A sampling tube for engineering geological exploration includes a tube body, wherein multiple sets of extrusion components are installed inside the tube body, and the multiple sets of extrusion components are evenly distributed circumferentially around the central axis of the tube body.

[0007] Each of the extrusion components includes a support seat that is fixedly connected to the inner wall of both ends of the tube. A first connecting rod and a second connecting rod are respectively hinged to the two support seats. A third connecting rod is hinged between the first connecting rod and the second connecting rod.

[0008] Each of the first connecting rods has a pull rope fixedly connected to the end furthest from the tube body.

[0009] Furthermore, a sleeve is fitted onto the upper end of the tube body, and a groove adapted to the sleeve is opened on the tube body. The sleeve is rotatably connected in the groove. A first through hole adapted to multiple pull ropes is opened on the side wall of the tube body. The ends of the multiple pull ropes away from the first connecting rod all pass through the first through hole and are fixedly connected to the inner side wall of the sleeve.

[0010] Furthermore, a limiting rod is provided on the sleeve, and a first limiting hole adapted to the limiting rod is opened on the sleeve. A plurality of second limiting holes adapted to the limiting rod are opened on the tube body. The plurality of second limiting holes are evenly distributed circumferentially around the central axis of the tube body. When the sleeve and the tube body are locked, one end of the limiting rod passes through the first limiting hole and the second limiting hole.

[0011] Furthermore, multiple anti-slip grooves are fixedly connected to the sleeve, and these anti-slip grooves are evenly distributed around the central axis of the sleeve.

[0012] Furthermore, a sliding rod is provided on the support seat at the upper end of the tube body, and a second through hole adapted to the sliding rod is opened on the support seat at the upper end of the tube body. The sliding rod is slidably connected in the second through hole, and a limiting block is fixedly connected to the lower end of the sliding rod. The limiting block abuts against the side wall of the first connection.

[0013] Furthermore, a tension spring is fitted onto the slide rod, and the two ends of the tension spring are fixedly connected to the slide rod and the side wall of the support seat at the upper end of the tube, respectively.

[0014] Furthermore, each of the third connecting rods has an arc-shaped plate fixedly connected to its sidewall. When the angle between the first connecting rods and the corresponding third connecting rods is at a right angle, the arc-shaped plates can be staggered and enclosed to form a ring.

[0015] Furthermore, a sector-shaped plate is fixedly connected to the bottom wall of multiple second connecting rods, and the multiple sector-shaped plates can close into a circle when they are on the same horizontal plane.

[0016] A sampling device includes a sampling tube for engineering geological exploration and a frame. A hydraulic cylinder is fixedly installed on the frame. A slide plate is fixedly connected to the output end of the hydraulic cylinder. The slide plate is slidably connected to the frame. The tube body is rotatably connected to the slide plate, and a hollow drill bit is fixedly connected to its lower end. A motor is fixedly installed on the slide plate, and the output shaft of the motor is drivenly connected to the tube body.

[0017] Furthermore, a connecting pipe is fixedly connected to the output shaft of the motor, and the connecting pipe is fixedly connected to the pipe body by a snap-fit.

[0018] The beneficial effects of this utility model are as follows:

[0019] This sampling tube and device for engineering geological exploration features an extrusion assembly in an extended state before penetrating the soil layer. During sampling, pulling the rope causes the first connecting rod to rotate upwards. This upward rotation of the first connecting rod causes the third connecting rod to retract inwards, which in turn causes the second connecting rod to rotate upwards. The inward retraction of the third connecting rod compacts the soil. Compared to existing technologies, in sandy soil layers, the retraction of the extrusion assembly instantly compacts loose sand particles, reducing soil collapse during sampling and allowing for the extraction of sand samples at a predetermined depth in a single operation, thus improving the sampling efficiency of sand samples from deeper sandy soil layers.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model. Figure 1 ;

[0023] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of Embodiment 1 of the present utility model. Figure 2 ;

[0025] Figure 5 This utility model Figure 4 A magnified view of a section at point B in the middle;

[0026] Figure 6 This is a partial structural schematic diagram of Embodiment 1 of the present utility model;

[0027] Figure 7 This is a schematic diagram showing the connection between a sleeve and a limiting rod in an embodiment of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of a set of tubes according to an embodiment of the present utility model;

[0029] Figure 9 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0030] In the picture:

[0031] 1. Tube body; 2. Extrusion assembly; 3. Support base; 4. First connecting rod; 5. Second connecting rod; 6. Third connecting rod; 7. Pull rope; 8. Sleeve; 9. Groove; 10. First through hole; 11. Limiting rod; 12. First limiting hole; 13. Second limiting hole; 14. Anti-slip texture; 15. Slide rod; 16. Second through hole; 17. Limiting block; 18. Tension spring; 19. Arc plate; 20. Fan plate; 21. Frame; 22. Hydraulic cylinder; 23. Slide plate; 24. Hollow drill bit; 25. Motor; 26. Connecting pipe. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0037] Example 1:

[0038] Please see Figure 1-8 The present invention provides a technical solution: a sampling tube for engineering geological exploration, comprising a tube body 1, wherein multiple sets of extrusion components 2 are installed inside the tube body 1, and the multiple sets of extrusion components 2 are evenly distributed around the central axis of the tube body 1.

[0039] Each of the extrusion components 2 includes a support seat 3 that is fixedly connected to the inner walls of both ends of the tube body 1. A first connecting rod 4 and a second connecting rod 5 are respectively hinged to the two support seats 3. A third connecting rod 6 is hinged between the first connecting rod 4 and the second connecting rod 5.

[0040] Each of the first connecting rods 4 has a pull rope 7 fixedly connected to the end away from the tube body 1.

[0041] In this design, the sampling tube contains multiple sets of circumferentially distributed compression components 2, which form a telescopic linkage mechanism through hinged first connecting rod 4, second connecting rod 5, and third connecting rod 6. When the pull rope 7 is pulled, the first connecting rod 4 causes the third connecting rod 6 to retract inward, applying radial pressure to the soil inside the tube 1 and forming a temporary support structure.

[0042] Before penetrating the soil layer, the extrusion component 2 is in the deployed state (e.g., Figure 2 (As shown); During sampling, after inserting the tube into the sandy soil layer to a set depth, pull the rope 7. Pulling the rope 7 causes the first connecting rod 4 to rotate upward. During the upward rotation of the first connecting rod 4, the third connecting rod 6 is driven to retract inward, which in turn drives the second connecting rod 5 to rotate upward. The inward retraction of the third connecting rod 6 can compact the soil (as shown). Figure 4 (As shown), then remove tube 1.

[0043] Compared to existing technologies, in sandy soil strata, the shrinkage of the extrusion component 2 can instantly compact loose sand particles, reduce soil collapse during sampling, and extract sand samples at a set depth in one go, thus improving the sampling efficiency of sand samples in deeper sandy soil strata.

[0044] In this embodiment: a sleeve 8 is fitted onto the upper end of the tube body 1, and a groove 9 adapted to the sleeve 8 is opened on the tube body 1. The sleeve 8 is rotatably connected in the groove 9. A first through hole 10 adapted to multiple pull ropes 7 is opened on the side wall of the tube body 1. The ends of the multiple pull ropes 7 away from the first connecting rod 4 all pass through the first through hole 10 and are fixedly connected to the inner side wall of the sleeve 8.

[0045] In this design: a sleeve 8 is fitted onto the upper end of the tube body 1, and a groove 9 adapted to the sleeve 8 is formed on the tube body 1. The sleeve 8 is rotatably connected within the groove 9 (allowing the sleeve 8 to rotate relative to the tube body 1 while restricting the sleeve 8's displacement along the length of the tube body 1). A first through hole 10 adapted to multiple pull ropes 7 is formed on the side wall of the tube body 1, and the ends of the multiple pull ropes 7 away from the first connecting rod 4 pass through the first through hole 10 and are fixedly connected to the inner side wall of the sleeve 8.

[0046] After sampling, rotating the sleeve 8 drives the multiple pull ropes 7 to wind up. By rotating the sleeve 8, the multiple pull ropes 7 are wound up, and the first connecting rod 4 is pulled to cause the third connecting rod 6 to contract inward and compact the soil, thus reducing the loss of sand samples when lifting the tube.

[0047] In this embodiment: a limiting rod 11 is provided on the sleeve 8, and a first limiting hole 12 adapted to the limiting rod 11 is provided on the sleeve 8. A plurality of second limiting holes 13 adapted to the limiting rod 11 are provided on the tube body 1. The plurality of second limiting holes 13 are evenly distributed around the central axis of the tube body 1. When the sleeve 8 and the tube body 1 are locked, one end of the limiting rod 11 passes through the first limiting hole 12 and the second limiting hole 13.

[0048] In this scheme: when the limiting rod 11 is inserted into the first limiting hole 12 and the second limiting hole 13, it locks the relative position of the sleeve 8 and the tube body 1, and fixes the contraction state of the extrusion assembly 2.

[0049] After the compression component 2 retracts into place, the limiting rod 11 is inserted to fix the sleeve 8, maintaining the soil under pressure until it is removed from the ground. This prevents the sleeve 8 from accidentally rotating during sampling, which could lead to support failure and improves structural stability.

[0050] In this embodiment: multiple anti-slip patterns 14 are fixedly connected to the sleeve 8, and the multiple anti-slip patterns 14 are evenly distributed around the central axis of the sleeve 8.

[0051] In this design: the anti-slip texture 14 increases the surface friction of the sleeve 8, making it easier to rotate manually.

[0052] The sleeve 8 can be rotated by holding it directly. The anti-slip texture 14 enhances the controllability, increases the friction with the sleeve 8, and reduces the probability of slippage during rotation.

[0053] In this embodiment: a slide rod 15 is provided on the support seat 3 at the upper end of the tube body 1, and a second through hole 16 adapted to the slide rod 15 is provided on the support seat 3 at the upper end of the tube body 1. The slide rod 15 is slidably connected in the second through hole 16, and a limiting block 17 is fixedly connected to the lower end of the slide rod 15. The limiting block 17 abuts against the side wall of the first connection.

[0054] In this scheme: a sliding rod 15 is provided on the support seat 3 at the upper end of the tube body 1. The support seat 3 at the upper end of the tube body 1 has a second through hole 16 adapted to the sliding rod 15. The sliding rod 15 is slidably connected in the second through hole 16. The lower end of the sliding rod 15 is fixedly connected to a limiting block 17. The limiting block 17 abuts against the side wall of the first connection.

[0055] The slide bar 15 abuts against the first connecting rod 4 via the limiting block 17, limiting the swing range of the first connecting rod 4 and preventing excessive contraction or expansion. And when the compression assembly 2 is in the expanded state (e.g....), Figure 2 As shown in the figure, it can reduce the probability that the third connecting rod 6 will retract inward due to centrifugal force during the rotation of the tube 1.

[0056] In this embodiment: a tension spring 18 is sleeved on the slide rod 15, and the two ends of the tension spring 18 are fixedly connected to the slide rod 15 and the side wall of the support seat 3 at the upper end of the tube body 1, respectively.

[0057] In this design: a tension spring 18 is fitted onto the slide rod 15, with both ends of the tension spring 18 fixedly connected to the slide rod 15 and the side wall of the support seat 3 at the upper end of the tube body 1, respectively. The tension spring 18 provides the restoring force for the slide rod 15; when the compression assembly 2 releases its contraction, the tension spring 18 pulls the slide rod 15 back to its original position.

[0058] Under the thrust of the spring, the slide bar 15 and the limiting block 17 abut against the first connecting rod 4, further restricting the first connecting rod 4 when the extrusion assembly 2 is in the unfolded state (e.g., Figure 2 The swing amplitude (as shown) is reduced, and the probability of the third connecting rod 6 retracting inward due to centrifugal force during the rotation of the tube 1 is further reduced. After the sleeve 8 is released, the tension spring 18 drives the slide rod 15 to reset, and the compression assembly 2 unfolds to prepare for the next sampling.

[0059] In this embodiment: multiple third connecting rods 6 are fixedly connected to the side walls of each arc plate 19. When the angle between multiple first connecting rods 4 and the corresponding third connecting rods 6 is at a right angle, multiple arc plates 19 can be staggered and enclosed to form a ring.

[0060] In this solution: by fixing arc-shaped plates 19 to the side walls of multiple third connecting rods 6, and with the angle between multiple first connecting rods 4 and the corresponding third connecting rods 6 being at a right angle, multiple arc-shaped plates 19 can be staggered and enclosed to form a ring.

[0061] When the third connecting rod 6 retracts, the arc-shaped plates 19 interlock to form a closed ring, directly enveloping the sand sample. This enhances the confining pressure effect on the loose sand sample. If the sand sample enters the gap between the arc-shaped plate 19 and the tube 1, making it difficult to pull the pull rope 7, the tube 1 is moved upwards, and the pull rope 7 is pulled during this process. This reduces the amount of sand sample between the arc-shaped plate 19 and the tube 1, making it easier to pull the pull rope 7.

[0062] In this embodiment: a fan-shaped plate 20 is fixedly connected to the bottom wall of multiple second connecting rods 5, and the multiple fan-shaped plates 20 can close into a circle when they are on the same horizontal plane.

[0063] In this solution: by fixing and connecting the fan-shaped plates 20 to the bottom wall of multiple second connecting rods 5, the multiple fan-shaped plates 20 can close into a circle when they are on the same horizontal plane.

[0064] When penetrating the soil layer, the sector plate 20 unfolds; during the pipe lifting process, the sector plate 20 closes into a circle when the second connecting rod 5 unfolds horizontally, serving as a support for the bottom of the soil. This reduces the risk of soil falling off from the lower end of the pipe body 1, and is especially suitable for non-cohesive sandy layers.

[0065] Example 2:

[0066] Please see Figure 1-9 This utility model provides a technical solution: a sampling device, including a sampling tube for engineering geological exploration and a frame 21. A hydraulic cylinder 22 is fixedly installed on the frame 21, and a sliding plate 23 is fixedly connected to the output end of the hydraulic cylinder 22. The sliding plate 23 is slidably connected to the frame 21. The tube body 1 is rotatably connected to the sliding plate 23, and a hollow drill bit 24 is fixedly connected to its lower end. A motor 25 is fixedly installed on the sliding plate 23, and the output shaft of the motor 25 is drivenly connected to the tube body 1. A connecting pipe 26 is fixedly connected to the output shaft of the motor 25, and the connecting pipe 26 is snap-fit ​​fixedly connected to the tube body 1.

[0067] In this scheme: hydraulic cylinder 22 drives pipe body 1 to penetrate the stratum, motor 25 drives pipe body 1 to rotate through connecting pipe 26, and hollow drill bit 24 cuts the soil layer. Extrusion assembly 2 shrinks and consolidates the soil after sampling. Motor 25 is electrically connected to controller, and solenoid valve of hydraulic cylinder 22 is electrically connected to controller. It also includes a collection tube adapted to the annular cavity formed by arc plate 19. The collection tube is made of transparent material (to facilitate observation of the structure of sand samples at different depths), which facilitates the collection and observation of sand samples to a certain extent.

[0068] In use, the controller controls the output end of the hydraulic cylinder 22 to retract, causing the slide plate 23 to press down on the tube body 1. Simultaneously, the controller controls the output shaft of the motor 25 to rotate, which in turn drives the tube body 1 to rotate via the connecting pipe 26. During this rotation, the drill bit rotates, assisting the tube body 1 in drilling and sampling. After sampling, the extrusion assembly 2 is triggered, and the controller controls the output end of the hydraulic cylinder 22 to extend, pushing the slide plate 23 upwards while simultaneously moving the connecting pipe 26 and the tube body 1 upwards. Then, the collection tube is inserted from the upper end of the tube body 1, abutting against the fan-shaped plate 20, unlocking the extrusion assembly 2, facilitating the removal of the collection tube and sand sample from the tube body 1.

[0069] The controller model can be OHR-PR20, the motor model 25 can be M206-402, and the hydraulic cylinder model 22 can be YG90 / 70.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sampling tube for engineering geological exploration, comprising a tube body (1), characterized in that: Multiple sets of extrusion components (2) are installed inside the tube body (1), and the multiple sets of extrusion components (2) are evenly distributed around the central axis of the tube body (1). Each of the extrusion components (2) includes support seats (3) that are fixedly connected to the inner walls of both ends of the tube body (1). A first connecting rod (4) and a second connecting rod (5) are respectively hinged on the two support seats (3). A third connecting rod (6) is hinged between the first connecting rod (4) and the second connecting rod (5). Each of the first connecting rods (4) has a pull rope (7) fixedly connected to one end away from the tube body (1).

2. The sampling tube for engineering geological exploration according to claim 1, characterized in that: The upper end of the tube (1) is fitted with a sleeve (8), and the tube (1) has a groove (9) adapted to the sleeve (8). The sleeve (8) is rotatably connected in the groove (9). The side wall of the tube (1) has a first through hole (10) adapted to multiple pull ropes (7). The ends of the multiple pull ropes (7) away from the first connecting rod (4) all pass through the first through hole (10) and are fixedly connected to the inner side wall of the sleeve (8).

3. The sampling tube for engineering geological exploration according to claim 2, characterized in that: The sleeve (8) is provided with a limiting rod (11), and the sleeve (8) is provided with a first limiting hole (12) adapted to the limiting rod (11). The tube body (1) is provided with a plurality of second limiting holes (13) adapted to the limiting rod (11). The plurality of second limiting holes (13) are evenly distributed around the central axis of the tube body (1). When the sleeve (8) and the tube body (1) are locked, one end of the limiting rod (11) passes through the first limiting hole (12) and the second limiting hole (13).

4. The sampling tube for engineering geological exploration according to claim 2, characterized in that: Multiple anti-slip grooves (14) are fixedly connected to the sleeve (8), and the multiple anti-slip grooves (14) are evenly distributed around the central axis of the sleeve (8).

5. The sampling tube for engineering geological exploration according to claim 1, characterized in that: A slide rod (15) is provided on the support seat (3) at the upper end of the tube body (1). A second through hole (16) adapted to the slide rod (15) is provided on the support seat (3) at the upper end of the tube body (1). The slide rod (15) is slidably connected in the second through hole (16). A limit block (17) is fixedly connected to the lower end of the slide rod (15). The limit block (17) abuts against the side wall of the first connection.

6. The sampling tube for engineering geological exploration according to claim 5, characterized in that: A tension spring (18) is fitted on the slide rod (15), and the two ends of the tension spring (18) are fixedly connected to the slide rod (15) and the side wall of the support seat (3) at the upper end of the tube body (1), respectively.

7. The sampling tube for engineering geological exploration according to claim 1, characterized in that: Arc-shaped plates (19) are fixedly connected to the side walls of the multiple third connecting rods (6). When the angle between the multiple first connecting rods (4) and the corresponding third connecting rods (6) is at a right angle, the multiple arc-shaped plates (19) can be staggered and enclosed to form a ring.

8. The sampling tube for engineering geological exploration according to claim 1, characterized in that: A sector plate (20) is fixedly connected to the bottom wall of multiple second connecting rods (5), and the multiple sector plates (20) can close into a circle when they are on the same horizontal plane.

9. A sampling device, comprising a sampling tube and a frame (21) for engineering geological exploration as described in claim 1, characterized in that: A hydraulic cylinder (22) is fixedly installed on the frame (21). A slide plate (23) is fixedly connected to the output end of the hydraulic cylinder (22). The slide plate (23) is slidably connected to the frame (21). The tube body (1) is rotatably connected to the slide plate (23), and a hollow drill bit (24) is fixedly connected to its lower end. A motor (25) is fixedly installed on the slide plate (23). The output shaft of the motor (25) is connected to the tube body (1) in a transmission connection.

10. The sampling device according to claim 9, characterized in that: A connecting pipe (26) is fixedly connected to the output shaft of the motor (25), and the connecting pipe (26) is fixedly connected to the pipe body (1) by a snap-fit.

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