Sand sampler for geotechnical investigation

Abstract

The utility model discloses a sand sampler for geotechnical investigation, which relates to the field of geotechnical investigation and comprises a supporting mechanism, a driving mechanism arranged in the supporting mechanism, a clamping mechanism arranged at the lower end of the driving mechanism, the clamping mechanism comprises two bidirectional telescopic supports, clamping rods fixed at two ends of the bidirectional telescopic supports, and a drill bit fixed at the bottom of the bidirectional telescopic support on the lower side. A sampling barrel is clamped on the clamping mechanism and comprises a sampling support, two limiting grooves are formed in the sampling support, two sampling openings are formed in the sampling support, an elastic supporting column is fixed in the sampling support, the top of the elastic supporting column is rotationally connected with a rotating transverse rod, and arc-shaped baffles are fixed to the two ends of the rotating transverse rod. The device has the beneficial effects that through cooperation of the clamping mechanism and the sampling barrel, the leakage problem of a sample in the lifting process can be avoided, and through cooperation of the mode that the sampling barrel can be taken down and the sealing plate movably connected with the top of the sampling support, a worker can conveniently collect a sandy soil sample.

Description

Technical Field

[0001] This utility model relates to the field of rock and soil exploration, and in particular to a sand sampling device for rock and soil exploration. Background Technology

[0002] Geotechnical investigation refers to a series of preliminary investigation activities carried out during the engineering construction process. It mainly includes the investigation, analysis, and evaluation of the construction site, and the determination of the feasibility and rationality of the project construction based on regional and environmental conditions.

[0003] In the process of geotechnical investigation, various sampling tools are often needed to obtain accurate information about underground soil layers. Among them, the sand sampler is a tool specifically used for sand layer sampling. It can go deep underground to collect sand samples that remain in their original state, thereby helping engineers understand various parameters of the sand layer.

[0004] For example, patent document CN222364794U discloses a sand sampler for soil and rock exploration, including a sampling tube, a shell defining an internal cavity, an opening at the bottom of the shell communicating with the cavity, and four storage slots spaced apart on the periphery of the shell; four fixing plates, each located in one of the four storage slots, with the bottom end of the fixing plates rotatably connected to the storage slots via a shaft; the fixing plates can be folded or unfolded on the shell; a first drive mechanism located in the cavity; and a sampling tube located in the cavity, with a second drive mechanism located within the cavity. The device uses the first drive mechanism to unfold the fixing plates to secure the shell, and the second drive mechanism controls the sampling tube to perform sampling. After sampling, the first drive mechanism returns the fixing plates to their folded state, reducing the area occupied by the fixing plates and making it easier for the user to carry.

[0005] In the prior art, most sampling structures used during sampling are sampling tubes with bottom openings or sampling buckets with side openings. However, due to the high fluidity of sand, sampling structures with bottom and side openings can lead to a large loss of samples, while sampling structures with side openings can cause difficulties in retrieving samples and sample confusion. Therefore, this application proposes a sand sampler that avoids the above disadvantages. Utility Model Content

[0006] The purpose of this utility model is to provide a sand sampling tool for geotechnical exploration in order to solve the above-mentioned problems.

[0007] This utility model achieves the above objectives through the following technical solutions:

[0008] A sand sampling device for rock and soil exploration includes a support mechanism, a drive mechanism inside the support mechanism, and a clamping mechanism at the lower end of the drive mechanism. The clamping mechanism includes two bidirectional telescopic supports arranged opposite each other, with two symmetrically arranged clamping rods fixedly connected to both ends of the two bidirectional telescopic supports. A drill bit is fixedly connected to the bottom of the lower bidirectional telescopic support. A sampling bucket is clamped on the clamping mechanism. The sampling bucket includes a sampling bracket. Two symmetrically arranged limiting grooves are provided on the sampling bracket, and the shape of the limiting grooves corresponds to the clamping rods. Two symmetrically arranged sampling ports are provided on the sampling bracket. An elastic support is fixedly connected inside the sampling bracket. A rotating crossbar is rotatably connected to the top of the elastic support. Arc-shaped baffles are fixedly connected to both ends of the rotating crossbar. The arc-shaped baffles can block the sampling ports. Two symmetrically arranged closing plates are movably connected to the top of the sampling bracket.

[0009] Preferably, the support mechanism includes a support shell, a lifting frame is slidably connected to the top of the support shell, several connecting rods are rotatably connected to the outside of the lifting frame, a support rod is rotatably connected to the other end of the connecting rod, one end of the support rod is rotatably connected to the support shell, an unfolding push plate is rotatably connected to the top of the lifting frame, several limiting grooves are fixedly connected to the inner wall of the top of the support shell, the limiting grooves can cooperate with the unfolding push plate to limit the movement, and a handle is fixedly connected to the unfolding push plate.

[0010] Preferably, the drive mechanism includes a fixed plate fixedly connected inside the support housing, a hydraulic telescopic rod fixedly connected to the top of the fixed plate, a connecting bracket fixedly connected to the output end of the hydraulic telescopic rod, a motor fixedly connected to the connecting bracket, an upper transmission block fixedly connected to the output end of the motor, a middle position of the upper bidirectional telescopic bracket rotatably connected to the output shaft of the motor, and a limit ring fixedly connected to the bottom of the fixed plate.

[0011] Preferably, a hydraulic transmission rod is fixedly connected to the top of the upper bidirectional telescopic bracket. The hydraulic transmission rod is connected to the interior of the bidirectional telescopic bracket. Hydraulic oil is injected into the hydraulic transmission rod and the interior of the upper bidirectional telescopic bracket. The upper end of the hydraulic transmission rod can contact the limit ring. A spring is fixedly connected between the fixed part and the telescopic part inside the bidirectional telescopic bracket.

[0012] Preferably, a lower transmission block is fixedly connected to the top of the rotating crossbar, the lower transmission block is provided with a polygonal groove, and the bottom of the upper transmission block is provided with a polygonal protrusion corresponding to the groove on the lower transmission block.

[0013] Preferably, the lower end of the support shell has an outlet for taking out the sampling bucket, and two symmetrically arranged lifting doors are slidably connected to the support shell, which can block the outlet.

[0014] The beneficial effects are as follows: the combination of clamping mechanism and sampling bucket can prevent other soil from entering the sampling bucket and contaminating the sample during the sampling process, and can also prevent leakage of the sample during the lifting process. Furthermore, the sampling bucket can be removed and combined with the sealing plate that is movably connected to the top of the sampling bracket, which makes it convenient for staff to collect sand samples.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional view of the unfolded state of the rock and soil exploration sand sampling device described in this utility model;

[0018] Figure 2 This is a three-dimensional view of the folded state of the rock and soil exploration sand sampling device described in this utility model;

[0019] Figure 3 This is a front sectional view of the unfolded state of the rock and soil exploration sand sampling device described in this utility model;

[0020] Figure 4 This is a three-dimensional view of the relative positions of the unfolding push plate and the lifting frame of the rock and soil exploration sand sampling device described in this utility model;

[0021] Figure 5 This is a front view showing the relative positions of the drive mechanism and the clamping mechanism of the rock and soil exploration sand sampler described in this utility model;

[0022] Figure 6 This is a front sectional view showing the relative positions of the drive mechanism and clamping mechanism of the rock and soil exploration sand sampler described in this utility model.

[0023] Figure 7 This is a three-dimensional view of the clamping mechanism of the sand sampling device for rock and soil exploration described in this utility model;

[0024] Figure 8 This is a three-dimensional view of the sampling bucket structure of a sand sampling device for rock and soil exploration as described in this utility model;

[0025] Figure 9 This is a three-dimensional view of the relative positions of the arc-shaped baffle and the transmission crossbar of the rock and soil exploration sand extractor described in this utility model.

[0026] The annotations in the attached figures are explained as follows:

[0027] 101. Support shell; 102. Unfolding push plate; 103. Limiting groove; 104. Lifting frame; 105. Connecting rod; 106. Support rod; 107. Lifting door; 201. Hydraulic telescopic rod; 202. Fixing plate; 203. Connecting bracket; 204. Motor; 205. Limiting ring; 206. Upper transmission block; 301. Bidirectional telescopic bracket; 302. Clamping rod; 303. Drill bit; 304. Hydraulic transmission rod; 305. Spring; 401. Sampling bracket; 402. Elastic support column; 403. Lower transmission block; 404. Sampling port; 405. Arc-shaped baffle; 406. Rotating crossbar; 407. Sealing plate; 408. Limiting groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figures 1-9As shown, a sand sampling device for rock and soil exploration includes a support mechanism, a drive mechanism is provided inside the support mechanism, and a clamping mechanism is provided at the lower end of the drive mechanism. The clamping mechanism includes two bidirectional telescopic supports 301 arranged opposite each other. Two symmetrically arranged clamping rods 302 are fixedly connected to both ends of the two bidirectional telescopic supports 301. The outer side of the clamping rods 302 is arc-shaped. A drill bit 303 is fixedly connected to the bottom of the lower bidirectional telescopic support 301. A sampling bucket is clamped on the clamping mechanism. The sampling container includes a sampling bracket 401, which is cylindrical in shape. Two symmetrically arranged limiting grooves 408 are provided on the sampling bracket 401, the shape of which corresponds to the clamping rod 302. Two symmetrically arranged sampling ports 404 are provided on the sampling bracket 401. An elastic support column 402 is fixedly connected inside the sampling bracket 401. A rotating crossbar 406 is rotatably connected to the top of the elastic support column 402. Arc-shaped baffles 405 are fixedly connected to both ends of the rotating crossbar 406, which can block the sampling ports 404. Two symmetrically arranged sealing plates 407 are bolted to the top of the sampling bracket 401. The two sealing plates 407 ensure that the sand sample from the sampling bracket 401 can be easily removed, facilitating cleaning of the inside of the sampling bracket 401. Due to the high fluidity of sand, sampling structures with bottom openings can lead to significant losses, while those with side openings can cause difficulties in sample retrieval and sample confusion. Therefore, this application proposes a sand sampler that avoids these drawbacks. After placing the sand sampler in the designated position, the support mechanism is opened to ensure the sampler is stably placed on the ground. The sampling bucket is then placed on the clamping mechanism. The bidirectional telescopic bracket 301 retracts inward, causing the clamping rod 302 to move. The clamping rod 302 engages with the limiting groove 408 to securely hold the sampling bracket 401. During this process, the lower transmission block 403 at the top of the rotating crossbar 406 connects to the drive mechanism. The drive mechanism then drives the clamping mechanism and the sampling bucket to drill underground. During this process, one side of the arc-shaped baffle 405 and the inward protruding part of the limiting groove 408 form a limit, causing the arc-shaped baffle 405 to rotate the sampling bracket 401. The sampling bracket 401 then rotates the clamping rod 302, which in turn rotates the drill bit 303, thus enabling drilling operations. During drilling, the arc-shaped baffle 405 always blocks the sampling port 404, preventing non-target sand from entering the sampling bracket 401. After reaching the drilling soil layer, the drive mechanism drives the rotating crossbar 406 to reverse through the lower transmission block 403. The rotating crossbar 406 drives the arc-shaped baffle 405 to reverse. During this process, the arc-shaped baffle 405 and the sampling bracket 401 rotate relative to each other. The arc-shaped baffle 405 no longer blocks the sampling port 404. Then, the other side of the arc-shaped baffle 405 abuts against the inward protruding part of the limiting groove 408 on the other side. In this way, the arc-shaped baffle 405 drives the sampling bracket 401 to flip, so that sand can be sampled. The same forward rotation is used to remove the sample. To avoid sample confusion, a different sampling bucket is used for each sampling.

[0032] The support mechanism includes a support housing 101, a lifting frame 104 slidably connected to the top of the support housing 101, four connecting rods 105 rotatably connected to the outer side of the lifting frame 104, and a support rod 106 hinged to the other end of each connecting rod 105. One end of the support rod 106 is hinged to the middle part of the support housing 101. An unfolding push plate 102 is hinged to the top of the lifting frame 104. Four limiting grooves 103 are fixedly connected to the inner wall of the top of the support housing 101. The four limiting grooves 103 are arranged in two layers, upper and lower, and can cooperate with the unfolding push plate 102 to limit movement. A handle is fixedly connected to the unfolding push plate 102. The operator rotates the unfolding push plate 102 to disengage it from the two upper limiting slots 103. Then, the operator presses down the unfolding push plate 102, which drives the lifting frame 104 to descend. The lifting frame 104 drives the connecting rod 105 to move. The connecting rod 105 drives the support rod 106 to flip. One side of the support rod 106 touches the ground. At this time, the unfolding push plate 102 is flush with the two lower limiting slots 103. Then, the unfolding push plate 102 is rotated into the limiting slots 103, thus completing the unfolding of the support mechanism.

[0033] The driving mechanism includes a fixed plate 202 fixedly connected inside the supporting housing 101. A hydraulic telescopic rod 201 is fixedly connected to the top of the fixed plate 202. A connecting bracket 203 is fixedly connected to the output end of the hydraulic telescopic rod 201. A motor 204 is fixedly connected to the connecting bracket 203. An upper transmission block 206 is fixedly connected to the output end of the motor 204. The middle position of the upper bidirectional telescopic bracket 301 is rotatably connected to the output shaft of the motor 204. In this way, the bidirectional telescopic bracket 301 and the connecting bracket 203 can generate relative rotation but cannot generate axial relative displacement. A limit ring 205 is fixedly connected to the bottom of the fixed plate 202. The hydraulic telescopic rod 201 drives the connecting bracket 203 to rise and fall. The connecting bracket 203 drives the motor 204 to rise and fall. The motor 204 drives the clamping mechanism and the sampling bucket to rise and fall. The connecting bracket 203 drives the upper transmission block 206 to rotate. The upper transmission block 206 drives the lower transmission block 403 to rotate, thereby driving the clamping mechanism and the sampling bucket to rotate.

[0034] A hydraulic transmission rod 304 is fixedly connected to the top of the upper bidirectional telescopic bracket 301. The hydraulic transmission rod 304 is connected to the interior of the bidirectional telescopic bracket 301. Hydraulic oil is filled into the hydraulic transmission rod 304 and the upper bidirectional telescopic bracket 301. The upper end of the hydraulic transmission rod 304 can contact the limiting ring 205. A spring 305 is fixedly connected between the fixed part and the telescopic part inside the bidirectional telescopic bracket 301. After sampling is completed, the hydraulic telescopic rod 201 drives the bidirectional telescopic bracket 301 to rise. The rise of the upper bidirectional telescopic bracket 301 drives the hydraulic transmission rod 304 to rise and abut against the limiting ring 205. The limiting ring 205 prevents the movable end of the hydraulic transmission rod 304 from moving. Thus, the movable end of the bidirectional telescopic bracket 301 is driven to extend outward through hydraulic transmission. At this time, the spring 305 is stretched, and the bidirectional telescopic bracket 301 drives the clamping rod 302 to move outward and contact the clamping mechanism of the sampling bracket 401. In this way, the staff can remove the sampling bucket from the clamping mechanism.

[0035] The top of the rotating crossbar 406 is fixedly connected to the lower transmission block 403, which is provided with a cross groove. The bottom of the upper transmission block 206 is provided with a cross protrusion corresponding to the groove on the lower transmission block 403. When the sampling bracket 401 is clamped, the lower transmission block 403 and the upper transmission block 206 can be assembled together because the elastic support 402 can extend and retract. The cross groove and the cross protrusion ensure the transmission of power.

[0036] The lower end of the support housing 101 is provided with an outlet for taking out the sampling bucket. Two symmetrically arranged lifting doors 107 are slidably connected to the support housing 101. The lifting doors 107 can cover the outlet. When the staff changes the sampling bucket, they can open the lifting doors 107 to expose the outlet, so that the staff can change the sampling bucket.

[0037] The working principle of this sand extractor is as follows:

[0038] S1: After the staff places the sand extractor in the predetermined position, the staff rotates the unfolding push plate 102 to disengage it from the upper two limiting slots 103. Then, the staff presses down the unfolding push plate 102, which drives the lifting frame 104 to descend. The lifting frame 104 drives the connecting rod 105 to move, and the connecting rod 105 drives the support rod 106 to flip. One side of the support rod 106 touches the ground. At this time, the unfolding push plate 102 is flush with the lower two limiting slots 103. Then, the unfolding push plate 102 is rotated into the limiting slots 103. This completes the unfolding of the support mechanism, allowing the sand extractor to be stably placed on the ground. The sampling bucket is then placed on the clamping mechanism. The drive mechanism drives the bidirectional telescopic bracket 301 to move downwards, causing the bidirectional telescopic bracket 301 to retract inwards and move the clamping rod 302. The clamping rod 302 cooperates with the limiting groove 408 to fix and clamp the sampling bracket 401. During this process, the lower transmission block 403 at the top of the rotating crossbar 406 connects with the upper transmission block 206. Subsequently, the hydraulic telescopic rod 201 drives the connecting bracket 203 to rise and fall. The connecting bracket 203 drives the motor 204 to rise and fall. 4. The clamping mechanism and sampling bucket are raised and lowered. The connecting bracket 203 drives the upper transmission block 206 to rotate, and the upper transmission block 206 drives the lower transmission block 403 to rotate, thereby driving the clamping mechanism and sampling bucket to rotate. During this process, one side of the arc-shaped baffle 405 and the inward protruding part of the limiting groove 408 form a limit. Then the arc-shaped baffle 405 drives the sampling bracket 401 to rotate, the sampling bracket 401 drives the clamping rod 302 to rotate, and the clamping rod 302 drives the drill bit 303 to rotate, so that drilling operations can be carried out.

[0039] S2: After reaching the drilling soil layer, the drive mechanism drives the rotating crossbar 406 to reverse through the lower transmission block 403. The rotating crossbar 406 drives the arc-shaped baffle 405 to reverse. During this process, the arc-shaped baffle 405 and the sampling bracket 401 rotate relative to each other. The arc-shaped baffle 405 no longer blocks the sampling port 404. Then, the other side of the arc-shaped baffle 405 abuts against the inward protruding part of the limiting groove 408 on the other side. In this way, the arc-shaped baffle 405 drives the sampling bracket 401 to flip, so that sand can be sampled. When taking samples out, the sampling is done in a forward rotation. To avoid sample confusion, a different sampling bucket is used for each sampling. After the sampling bucket is lifted to a certain position in a forward rotation, the upper bidirectional telescopic bracket 301 rises, driving the hydraulic transmission rod 304 to rise and contact the limit ring 205. The limit ring 205 prevents the movable end of the hydraulic transmission rod 304 from moving. Then, the movable end of the bidirectional telescopic bracket 301 is driven to extend outward through hydraulic transmission. At this time, the spring 305 is stretched, and the bidirectional telescopic bracket 301 drives the clamping rod 302 to move outward, contacting the clamping mechanism of the sampling bracket 401. In this way, the staff can remove the sampling bucket from the clamping mechanism, open the lifting door 107 to expose the extraction outlet, and then the staff can replace the sampling bucket. Afterward, the two sealing plates 407 are opened to take out the internal sample.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A sand sampling device for rock and soil exploration, comprising a support mechanism, wherein a driving mechanism is provided within the support mechanism, characterized in that: The lower end of the drive mechanism is provided with a clamping mechanism, which includes two bidirectional telescopic brackets (301) arranged opposite each other. Two symmetrically arranged clamping rods (302) are fixedly connected to both ends of the two bidirectional telescopic brackets (301). A drill bit (303) is fixedly connected to the bottom of the lower bidirectional telescopic bracket (301). A sampling bucket is clamped on the clamping mechanism. The sampling bucket includes a sampling bracket (401). Two symmetrically arranged limiting grooves (408) are opened on the sampling bracket (401). The limiting grooves (408) have a shape of... Corresponding to the clamping rod (302), the sampling bracket (401) has two symmetrically arranged sampling ports (404). An elastic support (402) is fixedly connected inside the sampling bracket (401). A rotating crossbar (406) is rotatably connected to the top of the elastic support (402). Arc-shaped baffles (405) are fixedly connected to both ends of the rotating crossbar (406). The arc-shaped baffles (405) can cover the sampling ports (404). Two symmetrically arranged closing plates (407) are movably connected to the top of the sampling bracket (401).

2. The rock and soil exploration sand sampling device according to claim 1, characterized in that: The support mechanism includes a support shell (101), a lifting frame (104) is slidably connected to the top of the support shell (101), a plurality of connecting rods (105) are rotatably connected to the outside of the lifting frame (104), a support rod (106) is rotatably connected to the other end of the connecting rod (105), one end of the support rod (106) is rotatably connected to the support shell (101), an unfolding push plate (102) is rotatably connected to the top of the lifting frame (104), a plurality of limiting grooves (103) are fixedly connected to the inner wall of the top of the support shell (101), the limiting grooves (103) can cooperate with the unfolding push plate (102) for limiting, and a handle is fixedly connected to the unfolding push plate (102).

3. A sand sampling device for rock and soil exploration according to claim 2, characterized in that: The driving mechanism includes a fixed plate (202) fixedly connected inside the support housing (101). A hydraulic telescopic rod (201) is fixedly connected to the top of the fixed plate (202). A connecting bracket (203) is fixedly connected to the output end of the hydraulic telescopic rod (201). A motor (204) is fixedly connected to the connecting bracket (203). An upper transmission block (206) is fixedly connected to the output end of the motor (204). The middle position of the upper bidirectional telescopic bracket (301) is rotatably connected to the output shaft of the motor (204). A limit ring (205) is fixedly connected to the bottom of the fixed plate (202).

4. A sand sampling device for rock and soil exploration according to claim 3, characterized in that: A hydraulic transmission rod (304) is fixedly connected to the top of the upper bidirectional telescopic bracket (301). The hydraulic transmission rod (304) communicates with the interior of the bidirectional telescopic bracket (301). Hydraulic oil is filled into the hydraulic transmission rod (304) and the upper bidirectional telescopic bracket (301). The upper end of the hydraulic transmission rod (304) can contact the limiting ring (205). A spring (305) is fixedly connected between the fixed part and the telescopic part inside the bidirectional telescopic bracket (301).

5. A sand sampling device for rock and soil exploration according to claim 3, characterized in that: The top of the rotating crossbar (406) is fixedly connected to a lower transmission block (403), the lower transmission block (403) is provided with a polygonal groove, and the bottom of the upper transmission block (206) is provided with a polygonal protrusion corresponding to the groove on the lower transmission block (403).

6. A sand sampling device for rock and soil exploration according to claim 2, characterized in that: The lower end of the supporting shell (101) is provided with an outlet for taking out the sampling bucket. Two symmetrically arranged lifting doors (107) are slidably connected to the supporting shell (101), and the lifting doors (107) can cover the outlet.

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