A sampler for geotechnical engineering investigation

Abstract

This utility model discloses a sampler for geotechnical engineering investigation, relating to the technical field of engineering investigation samplers. The utility model includes a rectangular frame and further includes: a positioning part disposed at the bottom of the rectangular frame; a sampling part disposed on the positioning part; the positioning part includes a positioning component disposed at the bottom of the rectangular frame; and a buffer component disposed on the positioning component; the positioning component includes two L-shaped rods disposed at the bottom of the rectangular frame, with a bidirectional screw rotatably connected to the two L-shaped rods, and two rubber clamping blocks threaded to the outer wall of the bidirectional screw. This utility model, by setting up a positioning part, solves the problem that when the sampling tube is directly inserted into the soil and driven by impact during sampling, the sampling tube is easily displaced or tilted due to impact force, which not only interferes with subsequent sampling operations but also affects the quality of the investigation.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering survey sampling devices, and in particular relates to a sampling device for geotechnical engineering surveys. Background Technology

[0002] A sampler used in geotechnical engineering investigation is a specialized tool used to extract undisturbed or disturbed soil samples from the ground during drilling. These samples are then used in laboratory testing to evaluate the physical and mechanical properties of the soil. Common types include thin-walled samplers, thick-walled samplers, piston samplers, and rotary samplers. Their structure typically consists of a cutting head, sampling tube, liner, connector, and sealing device. Soil disturbance is reduced by controlling drilling speed, pressure, and vibration. The selection of a sampler depends on the soil type, sampling depth, and engineering requirements. It is a key piece of equipment for obtaining reliable geological parameters in geotechnical engineering investigation.

[0003] However, in the use of existing geotechnical engineering sampling devices, since the sampling tube is directly inserted into the soil, the sampling tube is very prone to displacement or tilting due to impact force during the sampling process driven by impact. This not only interferes with subsequent sampling operations, but also affects the quality of the investigation. Utility Model Content

[0004] The purpose of this utility model is to provide a sampler for geotechnical engineering investigation. By setting a positioning part, it solves the problem that when the sampling tube is directly inserted into the soil and the sampling tube is driven by impact, the sampling tube is very easy to be displaced or tilted due to impact force. This not only interferes with subsequent sampling operations, but also affects the quality of investigation.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a sampler for geotechnical engineering investigation, comprising a rectangular frame and further comprising: a positioning part disposed at the bottom of the rectangular frame; a sampling part disposed on the positioning part; the positioning part comprising a positioning component disposed at the bottom of the rectangular frame; and a buffer component disposed on the positioning component; the positioning component comprising two L-shaped rods disposed at the bottom of the rectangular frame, a bidirectional screw rotatably connected to the two L-shaped rods, two rubber clamping blocks threadedly connected to the outer wall of the bidirectional screw, a sampling tube disposed on the side of the two rubber clamping blocks that are close to each other, a knob fixedly connected to the bidirectional screw, a telescopic protective sleeve disposed on the outer wall of the bidirectional screw, a balancing component disposed on each of the two L-shaped rods, the knob being located on the right side of the bidirectional screw, a balancing rod slidably connected to each of the two L-shaped rods, and the ends of the two balancing rods that are close to each other being fixedly connected to the two rubber clamping blocks.

[0007] Furthermore, the bottom of the rectangular frame is rotatably connected to several rotating blocks, the bottom of each of the rotating blocks is fixedly connected to a telescopic support leg, the bottom of each of the telescopic support legs is fixedly connected to a foot, and each of the foot is slidably connected to a ground nail. The rotating blocks, telescopic support legs, foot, and ground nail are an integral structure, and three such structures are provided.

[0008] Furthermore, the sampling unit includes a sampling component disposed at the top of the sampling tube; and a driving component disposed on the sampling component.

[0009] Furthermore, the buffer assembly includes two rectangular plates fixedly connected to the bottom of the rectangular frame. Each of the two rectangular plates has a mounting groove. Two guide rods are fixedly connected to each of the two mounting grooves. A damper is fixedly connected to the top inner wall of each of the two mounting grooves. The bottom end of each of the two dampers is fixedly connected to two L-shaped rods. A reset component is provided on each of the two dampers. The outer wall of each guide rod is slidably connected to the L-shaped rod in the same mounting groove. The reset component includes springs respectively wound around the outer wall of the two dampers. One end of each spring is fixedly connected to the groove wall of the two mounting grooves, and the other end of each spring is fixedly connected to the L-shaped rod in the same mounting groove.

[0010] Furthermore, the sampling assembly includes a guide roller rotatably connected to a rectangular frame, a steel cable slidably connected to the guide roller, a connecting frame fixedly connected to the bottom end of the steel cable, a counterweight fixedly connected to the bottom end of the connecting frame, a limiting slide rod slidably connected to the counterweight, two guide rods fixedly connected to the top of the limiting slide rod, both guide rods penetrating the counterweight, a top plate fixedly connected to the top of the limiting slide rod, the top ends of both guide rods fixedly connected to the top plate, a screw fixedly connected to the bottom of the limiting slide rod, a threaded groove opened at the top of the sampling tube, the outer wall of the screw threadedly connected to the threaded groove, and the outer walls of both guide rods slidably connected to the counterweight.

[0011] Furthermore, the drive assembly includes a bracket disposed at the bottom of the rectangular frame, a motor is fixedly connected to the left side of the bracket, the output shaft of the motor is fixedly connected to a rotating shaft via a coupling, the rotating shaft passes through the bracket, a take-up roller is fixedly connected to the outer wall of the rotating shaft, the outer wall of the take-up roller is in contact with the steel cable, and the outer wall of the rotating shaft is rotatably connected to the bracket.

[0012] This utility model has the following beneficial effects:

[0013] 1. The positioning unit uses a bidirectional screw drive as its core, and is equipped with multiple components to achieve stable fixation of the sampling tube and overall positioning of the device. Turning the knob drives the bidirectional screw to rotate, and the two rubber clamping blocks move closer and closer under the guidance of the balance bar, fitting against the outer wall of the sampling tube to complete the clamping, preventing the sampling tube from shifting or tilting when impacted. At the same time, the telescopic outriggers are extended and ground nails are driven into the ground to complete the ground fixation of the device. The damper and spring of the buffer component absorb the vibration energy during sampling, reducing the impact on the overall device. This structure provides dual stability protection from sampling tube fixation to overall device positioning, solving the problems of easy shifting and large vibration interference of traditional samplers, ensuring that the device and sampling tube remain vertical during sampling, and providing support for collecting soil and rock samples.

[0014] 2. The sampling unit uses a motor-driven winding mechanism as its power source, combined with counterweight impact to achieve sampling. The motor drives the winding roller to rotate, and through the cooperation of the steel cable and guide roller, the counterweight is lifted to a designated height along the limiting slide bar. After the motor reverses and releases the steel cable, the counterweight falls rapidly under the action of gravity to impact the sampling tube, pushing it to insert vertically into the soil. The cooperation of the guide rod and the limiting slide bar provides dual guidance for the counterweight and the sampling tube, preventing deviation during the impact. This structure converts the stable power of the motor into instantaneous impact force, and sampling can be completed without manual knocking. This not only improves sampling efficiency, but also ensures the vertical entry of the sampling tube into the ground through multiple guidances, ensuring the integrity of the collected soil and rock samples and effectively improving the quality of geotechnical engineering investigation.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the positioning part of this utility model;

[0019] Figure 3 This is a partial cross-sectional view of the sampling section of this utility model.

[0020] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0021] Figure 5 This utility model Figure 3 A magnified structural diagram of B in the diagram;

[0022] Figure 6 This utility model Figure 3 A magnified structural diagram of C.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 111. Rectangular frame; 112. Turning block; 113. Telescopic outrigger; 114. Outrigger foot; 115. Ground stake; 2. Positioning part; 21. Positioning assembly; 211. L-shaped rod; 212. Two-way screw; 213. Rubber clamping block; 214. Sampling tube; 215. Knob; 216. Telescopic protective sleeve; 217. Balance bar; 22. Buffer assembly; 221. Rectangular plate; 222. Mounting groove; 223. 1. Guide rod; 224. Damper; 225. Spring; 3. Sampling section; 31. Sampling assembly; 311. Guide roller; 312. Steel cable; 313. Connecting frame; 314. Counterweight; 315. Limiting slide bar; 316. Guide rod 2; 317. Top plate; 318. Screw; 319. Threaded groove; 32. Drive assembly; 321. Bracket; 322. Motor; 323. Rotating shaft; 324. Take-up roller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 As shown, this utility model is a sampler for geotechnical engineering investigation, including a rectangular frame 111, and further including: a positioning part 2, which is disposed at the bottom of the rectangular frame 111; and a sampling part 3, which is disposed on the positioning part 2.

[0027] The positioning part 2 includes a positioning component 21, which is disposed at the bottom of the rectangular frame 111; and a buffer component 22, which is disposed on the positioning component 21. The positioning component 21 includes two L-shaped rods 211 disposed at the bottom of the rectangular frame 111, and a bidirectional screw 212 rotatably connected to the two L-shaped rods 211. Two rubber clamping blocks 213 are threadedly connected to the outer wall of the bidirectional screw 212. A sampling tube 214 is disposed on the side of the two rubber clamping blocks 213 that are close to each other. A knob 215 is fixedly connected to the bidirectional screw 212. The wall is equipped with a telescopic protective sleeve 216. Each of the two L-shaped rods 211 has a balancing component. A knob 215 is located to the right of the bidirectional screw 212. Each of the two L-shaped rods 211 is slidably connected to a balancing rod 217. The ends of the two balancing rods 217 that are close to each other are fixedly connected to two rubber clamping blocks 213. The buffer assembly 22 includes two rectangular plates 221 fixedly connected to the bottom of the rectangular frame 111. Each of the two rectangular plates 221 has a mounting groove 222. Two guide rods 223 are fixedly connected to each of the two mounting grooves 222. Dampers 224 are fixedly connected to the inner walls of the top of each damper 224. The bottom ends of each damper 224 are fixedly connected to two L-shaped rods 211. Each damper 224 is equipped with a reset component. The outer walls of the guide rod 223 are slidably connected to the L-shaped rods 211 in the same mounting groove 222. The reset component includes springs 225 respectively wound around the outer walls of the two dampers 224. One end of each spring 225 is fixedly connected to the groove wall of the two mounting grooves 222, and the other end of each spring 225 is fixedly connected to the L-shaped rods 211 in the same mounting groove 222. The top of the sampling tube 214 is then... The threaded groove 319 is aligned with the screw 318 at the bottom of the limiting slide bar 315 and tightened to complete the initial fixation of the sampling tube. Then, the knob 215 on the right side of the bidirectional screw 212 is rotated to drive the bidirectional screw 212 to rotate synchronously. At this time, the two rubber clamping blocks 213 will approach each other under the guiding and limiting action of the balance bar 217 on them until they are in contact with the outer wall of the sampling tube 214, thereby achieving the clamping and positioning of the sampling tube. At the same time, the telescopic protective sleeve 216 on the outer wall of the bidirectional screw 212 can be deployed synchronously to isolate external impurities and prevent them from adhering and affecting the transmission effect of the screw.

[0028] The sampling unit 3 includes a sampling assembly 31, which is disposed on top of the sampling tube 214; and a driving assembly 32, which is disposed on the sampling assembly 31. The sampling assembly 31 includes a guide roller 311 rotatably connected to a rectangular frame 111, a steel cable 312 slidably connected to the guide roller 311, a connecting frame 313 fixedly connected to the bottom end of the steel cable 312, a counterweight 314 fixedly connected to the bottom end of the connecting frame 313, a limit rod 315 slidably connected to the counterweight 314, and two guide rods fixedly connected to the top of the limit rod 315. 316, both guide rods 316 pass through the counterweight 314, the top of the limiting slide rod 315 is fixedly connected to the top plate 317, the top ends of both guide rods 316 are fixedly connected to the top plate 317, the bottom of the limiting slide rod 315 is fixedly connected to the screw 318, the top of the sampling tube 214 is provided with a threaded groove 319, the outer wall of the screw 318 is threadedly connected to the threaded groove 319, the outer walls of both guide rods 316 are slidably connected to the counterweight 314, the driving assembly 32 includes a bracket 321 set at the bottom of the rectangular frame 111, the bracket 32... A motor 322 is fixedly connected to the left side of bracket 321. The output shaft of motor 322 is fixedly connected to a rotating shaft 323 via a coupling. The rotating shaft 323 passes through bracket 321, and a take-up roller 324 is fixedly connected to the outer wall of the rotating shaft 323. The outer wall of the take-up roller 324 is in contact with the steel cable 312. The outer wall of the rotating shaft 323 is rotatably connected to bracket 321. After the sampling tube is positioned, the motor 322 on bracket 321 can be started. The motor 322 will drive the take-up roller 324 to rotate via the rotating shaft 323. With the guidance of the guide roller 311 on rectangular frame 111, the steel cable 312... 12 will drive the counterweight 314 to slide upward along the limiting slide bar 315 through the connecting frame 313. During the sliding process, the two guide rods 316 on the limiting slide bar 315 can provide guidance for the counterweight to prevent it from deviating. When the counterweight 314 is raised to a suitable height, the motor 322 can be controlled to reverse, and the winding roller 324 will release the steel cable 312 simultaneously. At this time, the counterweight 314 will fall rapidly under the action of gravity, impacting the limiting slide bar 315 and the sampling tube 214 below, pushing the sampling tube to be inserted vertically into the soil, and completing the collection of soil and rock samples.

[0029] It should be noted that the control of motor 322 in this application can be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0030] One specific application of this embodiment is as follows: When in use, the device can be moved to the required sampling location, and then the four telescopic legs 113 rotatably connected to the bottom of the rectangular frame 111 can be unfolded. After the four telescopic legs 113 are unfolded into place, the ground nails 115 can be inserted into the feet 114 on the four telescopic legs 113 and driven into the ground to complete the fixed positioning of the entire device.

[0031] Subsequently, the threaded groove 319 at the top of the sampling tube 214 is aligned with the screw 318 at the bottom of the limiting slide bar 315 and tightened to complete the initial fixation of the sampling tube. Then, the knob 215 on the right side of the bidirectional screw 212 is rotated to drive the bidirectional screw 212 to rotate synchronously. At this time, the two rubber clamping blocks 213 will approach each other under the guiding and limiting action of the balance bar 217 on their respective sides until they are in contact with the outer wall of the sampling tube 214, thereby achieving the clamping and positioning of the sampling tube. At the same time, the telescopic protective sleeve 216 on the outer wall of the bidirectional screw 212 can be deployed synchronously to isolate external impurities and prevent them from adhering and affecting the transmission effect of the screw.

[0032] After the sampling tube is positioned, the motor 322 on the bracket 321 can be started. The motor 322 will drive the winding roller 324 to rotate through the rotating shaft 323. With the guidance of the guide roller 311 on the rectangular frame 111, the steel cable 312 will drive the counterweight 314 to slide upward along the limiting slide bar 315 through the connecting frame 313. During the sliding process, the two guide rods 316 on the limiting slide bar 315 can provide guidance for the counterweight to prevent it from deviating. When the counterweight 314 is raised to a suitable height, the motor 322 can be reversed and the winding roller 324 will release the steel cable 312 simultaneously. At this time, the counterweight 314 will fall rapidly under the action of gravity, impacting the limiting slide bar 315 and the sampling tube 214 below, pushing the sampling tube to be inserted vertically into the soil, thus completing the collection of soil and rock samples.

[0033] At the moment the sampling tube is impacted by the counterweight, the rubber clamping blocks 213 on both sides will also transmit the vibration to the L-shaped rod 211. At this time, the two L-shaped rods will absorb the vibration energy through the buffering effect of the damper and the elastic deformation of the spring under the guidance of the four guide rods 223 in the two rectangular plates 221, effectively reducing the impact of vibration on the entire device and ensuring the stability of the device during the sampling process.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sampler for geotechnical engineering investigation comprising a rectangular frame (111) characterised in that, Also includes: Positioning part (2), the positioning part (2) is disposed at the bottom of the rectangular frame (111); The sampling part (3) is disposed on the positioning part (2); The positioning part (2) includes a positioning component (21), which is disposed at the bottom of the rectangular frame (111); and A buffer assembly (22) is disposed on the positioning assembly (21); The positioning component (21) includes two L-shaped rods (211) set at the bottom of the rectangular frame (111), and a bidirectional screw (212) is rotatably connected to the two L-shaped rods (211). Two rubber clamping blocks (213) are threadedly connected to the outer wall of the bidirectional screw (212). A sampling tube (214) is set on the side of the two rubber clamping blocks (213) that are close to each other. A knob (215) is fixedly connected to the bidirectional screw (212). A telescopic protective sleeve (216) is set on the outer wall of the bidirectional screw (212). A balancing component is set on both L-shaped rods (211). The knob (215) is located on the right side of the bidirectional screw (212).

2. The sampler for geotechnical engineering investigation according to claim 1, characterized in that, The bottom of the rectangular frame (111) is rotatably connected to a plurality of rotating blocks (112), and the bottom of each of the plurality of rotating blocks (112) is fixedly connected to a telescopic support leg (113). The bottom of each of the plurality of telescopic support legs (113) is fixedly connected to a foot (114), and a ground nail (115) is slidably connected to each of the plurality of foot (114). Among them, the rotating block (112), telescopic outrigger (113), outrigger (114) and ground nail (115) are an integral structure, and there are three such structures.

3. A sampler for geotechnical engineering investigation according to claim 1, characterized in that, The sampling unit (3) includes a sampling component (31) disposed at the top of the sampling tube (214); and A driving component (32) is disposed on the sampling component (31).

4. A sampler for geotechnical engineering investigation according to claim 1, characterized in that, The buffer assembly (22) includes two rectangular plates (221) fixedly connected to the bottom of the rectangular frame (111). Each of the two rectangular plates (221) has a mounting groove (222). Each of the two mounting grooves (222) has two guide rods (223) fixedly connected inside. Each of the two mounting grooves (222) has a damper (224) fixedly connected to the top inner wall of the two mounting grooves (222). The bottom ends of the two dampers (224) are fixedly connected to two L-shaped rods (211). Each of the two dampers (224) has a reset component. Among them, the outer wall of the guide rod (223) is slidably connected to the L-shaped rod (211) in the same mounting groove (222).

5. A sampler for geotechnical engineering investigation according to claim 3, characterized in that, The sampling assembly (31) includes a guide roller (311) rotatably connected to a rectangular frame (111), a steel cable (312) slidably connected to the guide roller (311), a connecting frame (313) fixedly connected to the bottom end of the steel cable (312), a counterweight (314) fixedly connected to the bottom end of the connecting frame (313), a limit rod (315) slidably connected to the counterweight (314), and two guide rods (314) fixedly connected to the top of the limit rod (315). 16) Both guide rods (316) pass through the counterweight (314), the top of the limiting slide rod (315) is fixedly connected to the top plate (317), the top ends of both guide rods (316) are fixedly connected to the top plate (317), the bottom of the limiting slide rod (315) is fixedly connected to the screw (318), the top of the sampling tube (214) is provided with a threaded groove (319), and the outer wall of the screw (318) is threadedly connected to the threaded groove (319). The outer walls of the two guide rods (316) are slidably connected to the counterweight (314).

6. A sampler for geotechnical engineering investigation according to claim 3, characterized in that, The drive assembly (32) includes a bracket (321) disposed at the bottom of the rectangular frame (111). A motor (322) is fixedly connected to the left side of the bracket (321). The output shaft of the motor (322) is fixedly connected to a rotating shaft (323) via a coupling. The rotating shaft (323) passes through the bracket (321). A take-up roller (324) is fixedly connected to the outer wall of the rotating shaft (323). The outer wall of the take-up roller (324) is in contact with the steel cable (312). The outer wall of the rotating shaft (323) is rotatably connected to the bracket (321).

7. A sampler for geotechnical engineering investigation according to claim 1, characterized in that, Each of the two L-shaped rods (211) is slidably connected to a balance bar (217), and the ends of the two balance bars (217) that are close to each other are fixedly connected to two rubber clamping blocks (213).

8. A sampler for geotechnical engineering investigation according to claim 4, characterized in that, The reset component includes springs (225) respectively wound around the outer walls of two dampers (224). One end of each spring (225) is fixedly connected to the groove wall of two mounting slots (222), and the other end of each spring (225) is fixedly connected to an L-shaped rod (211) in the same mounting slot (222).

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