Soil sampling device for engineering investigation

Abstract

The utility model belongs to the field of engineering investigation, and discloses an engineering investigation soil sampling device which comprises a sampling barrel, the top of the sampling barrel is in threaded fit with a threaded sleeve, a control rod is rotationally installed at the top of the threaded sleeve, the bottom of the control rod extends into the sampling barrel, and a spiral blade located in the sampling barrel is fixed to a rod body of the control rod. The limiting piece is used for limiting the rotation of the threaded sleeve relative to the sampling barrel; and the fixing mechanism is installed outside the limiting piece and used for limiting the position of the limiting piece. The spiral blade is driven by the control rod to cut and sample the soil layer, so that the device can sample the hard soil layer, manpower is saved, and the applicability is higher.

Description

Technical Field

[0001] This utility model belongs to the field of engineering survey technology, and specifically relates to an engineering survey soil sampling device. Background Technology

[0002] With the continuous improvement of engineering survey technology, many fields require the use of engineering survey equipment. Engineering survey is an important basic work before the start of a project. In engineering survey, soil sampling equipment is used to extract soil for sampling and collection.

[0003] Chinese patent CN219391399U discloses a soil sampling device for engineering surveys, including a fixed sleeve, a sampling cylinder, two sets of fixed rods, a bracket, and a fixing mechanism. The sampling cylinder moves up and down along the axial direction of the fixed sleeve. The above solution can perform multiple sampling operations through a single sampling cylinder, which can prevent the samples from mixing and causing soil sample contamination, thereby improving the accuracy of subsequent testing. At the same time, since the pressure plate in the fixing mechanism can move up and down in the sampling cylinder, the sampling amount can be controlled, and the sample can also be extracted from the sampling cylinder.

[0004] However, in actual use, the above-mentioned device uses a pressing and fixing mechanism to press down the sampling tube, thereby allowing the soil sample to enter the sampling tube. This sampling method is relatively labor-intensive, and it is difficult to get the soil into the sampling tube by pressing down on harder soil layers. Therefore, the applicability of the above-mentioned solution is poor. Utility Model Content

[0005] The present invention aims to provide an engineering survey and soil sampling device to solve the problem of poor applicability of the above-mentioned solutions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an engineering survey and soil sampling device, comprising...

[0007] The sampling cylinder has a threaded sleeve at its top, and a control rod is rotatably mounted on the top of the threaded sleeve. The bottom of the control rod extends into the sampling cylinder, and a spiral blade located inside the sampling cylinder is fixed to the rod body of the control rod.

[0008] The limiting component is used to restrict the rotation of the threaded sleeve relative to the sampling cylinder;

[0009] A fixing mechanism is installed outside the limiting member and is used to limit the position of the limiting member.

[0010] The principle and effects of this technical solution:

[0011] 1. The sampling cylinder and the threaded sleeve are connected by a thread, allowing the sampling cylinder and the threaded sleeve to be disassembled. Since the control rod is mounted on the threaded sleeve, the disassembly of the sampling cylinder facilitates the internal cleaning of the spiral blades and the sampling cylinder, as well as the collection of samples from inside the sampling cylinder and on the spiral blades. Furthermore, the use of limiting and fixing components ensures that the sampling cylinder will not rotate relative to the threaded sleeve when the control rod is rotated for sampling, thereby improving the stability between the sampling cylinder and the threaded sleeve.

[0012] 2. The device is rotatably installed via a control rod and threaded sleeve, with the helical blades located on the control rod. Therefore, rotating the control rod controls the rotation of the helical blades. This allows the device to perform sampling without applying significant pressure to press the sampling cylinder into the soil layer after placing it on the soil surface. Rotating the control rod drives the helical blades to rotate, cut, and transport the soil layer below, allowing the soil sample to enter the sampling cylinder. This design makes soil sampling simpler and more convenient, and is applicable to harder soil layers, demonstrating high applicability.

[0013] The present invention is further configured such that: the limiting component includes a limiting cylinder, a plurality of first protrusions are evenly distributed circumferentially on the outer wall of the threaded sleeve, a first limiting groove is provided inside the limiting cylinder, the threaded sleeve is slidably inserted into the limiting cylinder, and the first protrusions and the first limiting groove are slidably engaged, the sampling cylinder slides inside the limiting cylinder, and the lower end of the sampling cylinder extends to the bottom of the limiting cylinder, and the fixing mechanism is installed outside the limiting cylinder and is used to limit the position of the limiting cylinder.

[0014] The principle and effect of this technical solution: By setting the first protrusion and the first limiting groove, when the sampling cylinder and the threaded sleeve are installed together, the sampling cylinder and the threaded sleeve can be placed as a whole in the limiting cylinder. The inner side wall of the limiting cylinder and the first limiting groove limit the threaded sleeve and the first protrusion, so that the operator does not have to worry about the threaded sleeve rotating relative to the sampling cylinder when rotating the control rod, thereby improving the stability of the device.

[0015] The present invention is further configured such that: the fixing mechanism includes a connecting rod, a pedal, a fixing cone, and a guide cylinder; multiple connecting rods are evenly distributed circumferentially on the outer wall of the limiting cylinder, and the guide cylinder is fixed together on the inner side of the bottom of the connecting rods; multiple second protrusions are evenly distributed circumferentially on the outer wall of the lower end of the sampling cylinder; a second limiting groove is provided in the guide cylinder; the sampling cylinder and the guide cylinder are slidably inserted, and the second protrusions and the second limiting groove are slidably engaged; the pedal is fixed on the outer wall of the connecting rod, and the fixing cone is fixed on the bottom of the pedal.

[0016] The principle and effect of this technical solution: By setting the guide cylinder, the lower end of the sampling cylinder and the second protrusion are also guided and restricted, thereby making the position of the sampling cylinder more stable relative to the threaded sleeve and preventing the sampling cylinder from rotating relative to the threaded sleeve, further improving the stability of the device. The guide cylinder and the limiting cylinder are connected together by the connecting rod, and the setting of the pedal and the fixed cone allows the user to step on the pedal to insert the fixed cone into the soil layer, thereby limiting the position of the guide cylinder and the limiting cylinder. This allows the operator to complete the sampling by inserting the sampling cylinder and the threaded sleeve, and facilitates repeated sampling.

[0017] The present invention is further configured to include a limiting mechanism, which includes two limiting units symmetrical about the limiting cylinder. Each limiting unit includes a fixed cylinder, a limiting rod, a limiting block, and a limiting spring. The fixed cylinder is fixed to the outer wall of the limiting cylinder. The limiting rod is slidably inserted into the fixed cylinder and the limiting cylinder, and the limiting rod extends into the limiting cylinder. The upper surface of the limiting rod near the control rod is inclined. The limiting block is fixed to the limiting rod and slidably fitted into the fixed cylinder. The limiting spring is sleeved on the limiting rod and located in the fixed cylinder on the side of the limiting block away from the control rod.

[0018] The principle and effect of this technical solution are as follows: By setting the inclined surface, when the threaded sleeve enters the limiting cylinder, it can compress the inclined surface of the limiting rod, thereby causing the limiting rod to compress the limiting spring and make way for the threaded sleeve. When the threaded sleeve abuts against the bottom of the inner side of the limiting cylinder, the limiting block extends into the inner side of the limiting cylinder under the action of the limiting spring's rebound force, thereby abutting against the top of the threaded sleeve and thus restricting the vertical direction of the threaded sleeve. The limiting cylinder prevents the threaded sleeve from rotating, and the limiting mechanism limits the vertical position of the threaded sleeve. Therefore, when the device is used for testing, the operator does not need to apply downward pressure or prevent rotation. Sampling can be completed simply by controlling the rotation of the control rod. The operation is simple and convenient, saving manpower.

[0019] The present invention is further configured such that a pull ring is fixed at the end of the limiting rod away from the control rod.

[0020] The principle and effect of this technical solution: The pull ring facilitates the worker's pulling of the limiting rod to allow the threaded sleeve to move, thus making it easier to remove the threaded sleeve from the limiting cylinder.

[0021] The present invention is further configured such that: the upper end of the control rod is provided with an external thread, and a control cylinder is threadedly fitted onto the upper end of the control rod, with the bottom of the control cylinder abutting against the top of the threaded sleeve.

[0022] The principle and effect of this technical solution: By controlling the position of the control cylinder on the control rod, the height of the spiral blade relative to the sampling cylinder is controlled, thereby enabling the device to penetrate deep into the soil layer and obtain soil samples from the soil layer, thus making the device more widely applicable.

[0023] The present invention is further configured such that a number of ball bearings are installed at the bottom of the control cylinder.

[0024] The principle and effect of this technical solution: The ball bearings change the sliding friction between the control cylinder and the threaded sleeve into rolling friction, making the control rod rotate more smoothly and reducing frictional resistance. Attached Figure Description

[0025] Figure 1 This is the main view of the structure of this utility model;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0027] Figure 3 for Figure 1 A top view without the sampling cylinder and threaded sleeve;

[0028] Figure 4 for Figure 1 Top view of the threaded sleeve;

[0029] Figure 5 This is a top view of the guide tube in the figure. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0031] The reference numerals in the accompanying drawings of the instruction manual include: 101, sampling cylinder; 102, second protrusion; 201, threaded sleeve; 202, first protrusion; 301, control rod; 302, spiral blade; 303, control cylinder; 401, limiting cylinder; 402, first limiting groove; 501, connecting rod; 502, pedal; 503, fixed cone; 504, guide cylinder; 505, second limiting groove; 601, fixed cylinder; 602, limiting rod; 603, limiting block; 604, limiting spring; 605, pull ring.

[0032] Example:

[0033] As attached Figure 1-5 As shown, this utility model discloses an engineering survey soil sampling device, including a sampling cylinder 101, a limiting component, a fixing mechanism, and a limiting mechanism.

[0034] The top of the sampling cylinder 101 is threaded with a threaded sleeve 201. A control rod 301 is slidably inserted into the top of the threaded sleeve 201. The bottom of the control rod 301 extends into the sampling cylinder 101, and a spiral blade 302 located inside the sampling cylinder 101 is fixed to the rod body of the control rod 301. The upper end of the control rod 301 is threaded, and a control cylinder 303 is threadedly fitted onto the upper end of the control rod 301. Several balls are installed at the bottom of the control cylinder 303, and the balls roll against the threaded sleeve 201.

[0035] The outer wall of the threaded sleeve 201 has multiple first protrusions 202 evenly distributed circumferentially, and the outer wall of the lower end of the sampling cylinder 101 has multiple second protrusions 102 evenly distributed circumferentially.

[0036] The limiting component includes a limiting cylinder 401, a first limiting groove 402 is provided inside the limiting cylinder 401, a threaded sleeve 201 is slidably inserted into the limiting cylinder 401, and a first protrusion 202 is slidably engaged with the first limiting groove 402. A sampling cylinder 101 slides inside the limiting cylinder 401, and the lower end of the sampling cylinder 101 extends to below the bottom of the limiting cylinder 401.

[0037] The fixing mechanism includes a connecting rod 501, a pedal 502, a fixing cone 503, and a guide cylinder 504. Four connecting rods 501 are evenly distributed around the outer wall of the limiting cylinder 401, and the guide cylinder 504 is fixed to the inner side of the bottom of the connecting rods 501. A second limiting groove 505 is opened in the guide cylinder 504. The sampling cylinder 101 is slidably inserted into the guide cylinder 504, and the second protrusion 102 is slidably engaged with the second limiting groove 505. The two pedals 502 are respectively fixed to the outer walls of the two connecting rods 501, and the fixing cone 503 is fixed to the bottom of the pedal 502.

[0038] The limiting mechanism includes two limiting units symmetrical about the limiting cylinder 401. Each limiting unit includes a fixed cylinder 601, a limiting rod 602, a limiting block 603, and a limiting spring 604. The fixed cylinder 601 is fixed to the outer wall of the limiting cylinder 401. The limiting rod 602 is slidably inserted into both the fixed cylinder 601 and the limiting cylinder 401, and extends into the limiting cylinder 401. The upper surface of the limiting rod 602 near the control rod 301 is inclined. The limiting block 603 is fixed to the limiting rod 602 and slidably fitted inside the fixed cylinder 601. The limiting spring 604 is sleeved on the limiting rod 602 and located inside the fixed cylinder 601 on the side of the limiting block 603 away from the control rod 301. A pull ring 605 is fixed to the end of the limiting rod 602 away from the control rod 301.

[0039] The specific implementation process is as follows:

[0040] When using this device, first, a fixing mechanism is placed at the soil sampling point. Then, the fixing cone 503 is stepped into the soil layer using the pedal 502. Next, the threaded sleeve 201 is fitted onto the sampling cylinder 101 to be sampled at a certain position. Then, the sampling cylinder 101 and the threaded sleeve 201 are placed inside the limiting cylinder 401, and the second protrusion 102 at the lower end of the sampling cylinder 101 is slidably engaged with the second limiting groove 505. Then, the threaded sleeve 201 is pressed down until it is at its lowest position. At this time, the limiting mechanism restricts the threaded sleeve 201. By controlling the position of the control cylinder 303, the ball bearings are made to abut against the top of the threaded sleeve 201. At this time, the operator can rotate the control rod 301 to make the spiral blade 302 cut and collect the soil layer. The cutting position of the spiral blade 302 relative to the soil layer can be controlled by raising or lowering the position of the control cylinder 303, thereby controlling the sampling depth.

[0041] After sampling is completed, the limiting rods 602 on both sides can be released from the restriction of the threaded sleeve 201 by pulling the pull ring 605. Then, after taking out the threaded sleeve 201 and the sampling cylinder 101, the soil sample on the sampling cylinder 101 and the spiral blade 302 can be collected by rotating the threaded sleeve 201 away from the sampling cylinder 101, and a new sampling cylinder 101 can be cleaned and replaced, which helps to maintain the cleanliness of the sample. At the same time, the fixing mechanism is also fixed on the soil layer, and the above steps can be repeated to continue sampling, which is convenient for repeated sampling.

[0042] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An engineering survey soil taking device characterized by: The utility model provides a sampling device, which comprises a sampling cylinder, a threaded sleeve, a control rod, a limiting piece and a fixing mechanism. The top of the sampling cylinder is threadedly connected with the threaded sleeve, the threaded sleeve is rotatably connected with the control rod at the top, the bottom of the control rod extends into the sampling cylinder, and the shank of the control rod is fixed with helical blades located in the sampling cylinder. The limiting piece is used for limiting the rotation of the threaded sleeve relative to the sampling cylinder. The fixing mechanism is installed outside the limiting piece and is used for limiting the position of the limiting piece.

2. An engineering investigation soil sampling device as claimed in claim 1, wherein: The limiting piece comprises a limiting cylinder, a plurality of first protrusions are uniformly distributed on the outer wall of the threaded sleeve, a first limiting groove is formed in the limiting cylinder, the threaded sleeve is slidingly inserted into the limiting cylinder, the first protrusions are slidingly connected with the first limiting groove, the sampling cylinder is slidingly arranged in the limiting cylinder, the lower end of the sampling cylinder extends below the bottom of the limiting cylinder, and the fixing mechanism is installed outside the limiting cylinder.

3. An engineering investigation soil sampling device as claimed in claim 2, wherein: The fixing mechanism comprises connecting rods, a pedal, a fixing cone and a guide cylinder, a plurality of the connecting rods are uniformly distributed on the outer wall of the limiting cylinder, the inner side of the bottom of the connecting rods is fixed with the guide cylinder, a plurality of second protrusions are uniformly distributed on the outer wall of the lower end of the sampling cylinder in the circumferential direction, a second limiting groove is formed in the guide cylinder, the sampling cylinder and the guide cylinder are slidingly inserted, the second protrusions are slidingly connected with the second limiting groove, the pedal is fixed on the outer wall of the connecting rod, and the fixing cone is fixed on the bottom of the pedal.

4. An engineering investigation soil sampling device as claimed in claim 2, wherein: The utility model also comprises a limiting mechanism, the limiting mechanism comprises two limiting units which are symmetrical about the limiting cylinder, the limiting unit comprises a fixing cylinder, a limiting rod, a limiting block and a limiting spring, the fixing cylinder is fixed on the outer side wall of the limiting cylinder, the limiting rod is slidingly inserted into the fixing cylinder and the limiting cylinder, the limiting rod extends into the limiting cylinder, the upper surface of one end of the limiting rod close to the control rod is a slope, the limiting block is fixed on the limiting rod and slidingly connected in the fixing cylinder, the limiting spring is sleeved on the limiting rod and located in the fixing cylinder away from the control rod.

5. An engineering investigation soil sampling device as claimed in claim 4 wherein: One end of the limiting rod away from the control rod is fixed with a pull ring.

6. An engineering investigation soil sampling device as claimed in claim 1, wherein: The upper end of the control rod is externally threaded, a control cylinder is threadedly connected with the upper end of the control rod, and the bottom of the control cylinder abuts against the top of the threaded sleeve.

7. An engineering investigation soil sampling device as claimed in claim 6 wherein: The bottom of the control cylinder is provided with a plurality of balls.

Images