Soil sampling equipment for engineering planning construction

Abstract

The utility model discloses soil sampling equipment for engineering planning construction, which comprises an outer cylinder and an inner cylinder, the inner cylinder is positioned in the outer cylinder, the upper end of the inner cylinder is fixedly connected with a piston, the piston is in sliding connection with the inner wall of the outer cylinder, the outer cylinder is communicated with an air inlet pipe, and the air inlet pipe is positioned between the inner top wall of the outer cylinder and the piston. A return spring is installed between the inner top wall of the outer cylinder and the piston. A drill bit is installed on the lower end face of the inner cylinder, an air inlet pipe is inserted into the piston, the lower end of the air inlet pipe extends into the inner cylinder, a plurality of sampling assemblies are installed on the air inlet pipe at equal intervals, and the sampling assemblies penetrate out of the inner cylinder and extend outwards. The soil sampling device is ingenious in structure and reasonable in design, soil at different depths can be sampled at the same time, the sampling time is saved, the sampling barrel is driven by the reset spring to move into the limiting barrel to protect soil samples, and the situation that the sampled soil samples are mixed by soil at other depths, and the subsequent experiment result is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering planning and construction equipment, in particular to soil sampling equipment for engineering planning and construction. Background Art

[0002] The main reasons for soil sampling during project planning and construction are as follows: 1. Assessing the bearing capacity of the foundation: understanding the mechanical properties of the soil to determine whether it can bear the weight of a building or other engineering structure to ensure the stability of the foundation; 2. Determining the foundation type: selecting the appropriate foundation type based on soil characteristics, such as shallow foundation or deep foundation; 3. Testing soil composition: analyzing whether there are harmful substances in the soil to avoid potential harm to the project and the environment; 4. Understanding geological conditions: mastering information such as stratum structure and geological structure to provide a basis for formulating construction plans, such as avoiding construction in poor geological areas or taking appropriate treatment measures; 5. Estimating settlement: by analyzing soil properties, predicting the possible settlement of a building or project during use, so that countermeasures can be taken in advance; 6. Soil and water conservation considerations: providing data support for the rational planning of soil and water conservation measures to prevent problems such as soil erosion during construction; 7. Cost accounting: helping to accurately assess the difficulty and cost of construction, avoiding budget overruns or construction difficulties due to insufficient understanding of soil conditions. Therefore, it can be seen that soil sampling is important for project planning and construction.

[0003] Existing soil sampling technologies are mainly divided into two categories: mechanical power and manual sampling. Neither mechanical power nor manual sampling can simultaneously take out soil samples from different depths. When soil samples at different depths are required, multiple operations are required, which takes a long time. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the background technology and to propose a soil sampling device for engineering planning and construction.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A soil sampling device for engineering planning and construction comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is located within the outer cylinder, a piston is fixedly connected to the upper end of the inner cylinder, and the piston is slidably connected to the inner wall of the outer cylinder, an air inlet pipe is connected to the outer cylinder, and the air inlet pipe is located between the inner top wall of the outer cylinder and the piston, and a return spring is installed between the inner top wall of the outer cylinder and the piston;

[0007] A drill bit is installed on the lower end surface of the inner cylinder, an air inlet pipe is inserted into the piston, the lower end of the air inlet pipe extends into the inner cylinder, and multiple groups of sampling components are equidistantly installed on the air inlet pipe, and the sampling components pass through the inner cylinder and extend outward.

[0008] Preferably, the sampling assembly includes multiple groups of limiting cylinders arranged at equal intervals, and each limiting cylinder is connected to the air inlet pipe, and each group of limiting cylinders is composed of multiple limiting cylinders arranged circumferentially, and a sampling cylinder is slidably connected in each of the limiting cylinders, and a reset spring is commonly installed between the two sampling cylinders in corresponding positions.

[0009] Preferably, a plurality of through holes are circumferentially formed on the inner cylinder, and each sampling cylinder passes through the through holes and extends out of the inner cylinder.

[0010] Preferably, each of the limiting cylinders is located in the inner cylinder, and the diameter of the limiting cylinder is larger than the aperture of the through hole.

[0011] Preferably, a plurality of connecting rods are symmetrically mounted on the outer side wall of the outer cylinder, a fixing plate is commonly mounted on the lower ends of the plurality of connecting rods, and the fixing plate is fixedly connected to the outer side wall of the outer cylinder.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Through the air inlet pipe, limit cylinder, sampling cylinder and reset spring, multiple sampling cylinders can be moved into the soil at the same time, and soil samples at different depths can be sampled at the same time, saving sampling time. The reset spring then drives the sampling cylinder to move into the limit cylinder to protect the soil sample, preventing soil from other depths from confusing the soil samples that have been taken and affecting subsequent experimental results.

[0014] 2. Use the air pump and air inlet pipe to change the volume of gas inside the outer tube, and then use the piston to drive the inner tube downward, so that the inner tube and the sampling assembly move downward, driving the drill bit to insert into the soil. By filling different volumes of gas, the depth of the inner tube inserted into the soil can be changed, and different depths can be adjusted according to different needs.

[0015] To sum up, the utility model has an ingenious structure and a reasonable design. It can sample soil at different depths at the same time, saving sampling time. The reset spring drives the sampling tube to move into the limit tube to protect the soil sample, thereby preventing soil at other depths from confusing the soil samples that have been taken and affecting subsequent experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a soil sampling device for engineering planning and construction proposed by the present utility model;

[0017] Figure 2 This is a visual diagram of a soil sampling device for engineering planning and construction proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the inner cylinder of a soil sampling device for engineering planning and construction proposed by the present invention;

[0019] Figure 4 This is an enlarged view of the structure of the sampling tube part of the soil sampling equipment for engineering planning and construction proposed by the utility model.

[0020] In the figure: 1 outer cylinder, 2 air inlet pipe, 3 air intake pipe, 4 piston, 5 inner cylinder, 6 fixing plate, 7 connecting rod, 8 drill bit, 9 limit cylinder, 10 sampling cylinder, 11 through hole, 12 return spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-4 A soil sampling device for engineering planning and construction includes an outer cylinder 1 and an inner cylinder 5, wherein the inner cylinder 5 is located inside the outer cylinder 1, and a plurality of connecting rods 7 are symmetrically mounted on the outer wall of the outer cylinder 1. A fixing plate 6 is commonly mounted at the lower ends of the plurality of connecting rods 7, and the fixing plate 6 is fixedly connected to the outer wall of the outer cylinder 1;

[0023] The upper end of the inner tube 5 is fixedly connected to the piston 4, and the piston 4 is slidably connected to the inner wall of the outer tube 1. The outer tube 1 is connected to the air inlet pipe 3, and the air inlet pipe 3 is located between the inner top wall of the outer tube 1 and the piston 4. A return spring 13 is installed between the inner top wall of the outer tube 1 and the piston 4.

[0024] A drill bit 8 is installed on the lower end surface of the inner cylinder 5, and an air inlet pipe 2 is inserted into the piston 4, and the lower end of the air inlet pipe 2 extends into the inner cylinder 5;

[0025] Multiple groups of sampling components are equidistantly installed on the air inlet pipe 2, and the sampling components penetrate the inner tube 5 and extend outward. The sampling components include multiple groups of limiting cylinders 9 arranged at equal intervals, and each limiting cylinder 9 is connected to the air inlet pipe 2, and each group of limiting cylinders 9 is composed of multiple limiting cylinders 9 arranged circumferentially. A sampling cylinder 10 is slidably connected in each limiting cylinder 9, and the end of the sampling cylinder 10 away from the inner tube 5 is an inclined surface (such as Figure 4 As shown), ensure that its end is an acute angle, which facilitates the insertion of the sampling tube 10 into the soil at the corresponding position. A plurality of through holes 11 are provided on the circumferential surface of the inner tube 5, and each sampling tube 10 passes through the through hole 11 and extends out of the inner tube 5. Each limiting tube 9 is located in the inner tube 5, and the diameter of the limiting tube 9 is larger than the aperture of the through hole 11. A reset spring 12 is installed between the two corresponding sampling tubes 10. It is worth noting that if the corresponding sampling tube 10 is located in the outer tube 1 and not outside the outer tube 1, the end of the sampling tube 10 is against the inner wall of the outer tube 1 and does not affect the sampling of other sampling tubes 10.

[0026] Before use, the utility model is connected to the ends of the air inlet pipe 3 and the air inlet pipe 2 respectively, and the drill bit 8 is inserted into the soil at a predetermined position. The shallow part of the soil is relatively loose and easy to insert. After being inserted into a certain position, the lower surface of the fixing plate 6 contacts and abuts against the soil surface, and then the air pump connected to the air inlet pipe 3 is opened, and the air pump fills gas into the outer tube 1 through the air inlet pipe 3. The increase in the gas inside the outer tube 1 pushes the piston 4 and the inner tube 5 into the soil until they move to a suitable length. Then the air pump connected to the air inlet pipe 3 is closed, and the air pump connected to the air inlet pipe 2 is opened. The gas inside the air inlet pipe 2 increases, and the sampling tube 10 is pushed outward through the limiting tube 9. The reset spring 12 is extended, and the sampling tube 10 is inserted into the soil corresponding to the position. The interior of the sampling tube 10 is filled with the corresponding position. The air inlet pipe 3 is connected to the soil, and then the air pump connected to the air inlet pipe 3 is opened, and a small amount of gas is filled into the outer cylinder 1 through the air inlet pipe 3, so that the inner cylinder 5 continues to move downward, ensuring that the movement range is about the diameter of the sampling cylinder 10, ensuring that the soil completely enters the sampling cylinder 10 corresponding to the position, and then the air pump connected to the air inlet pipe 2 is used to suck out part of the gas inside the air inlet pipe 2. The elastic force of the return spring 12 restores its original length to drive the sampling cylinder 10 into the inner cylinder 5 and the limit cylinder 9, and then the sampling equipment is taken out upward. Finally, the air pump connected to the air inlet pipe 2 is opened again, and the gas inside the air inlet pipe 2 increases, pushing the sampling cylinder 10 to move outward through the limit cylinder 9, the return spring 12 extends, and the sampling cylinder 10 extends to the outside of the inner cylinder 5, and the soil samples in the sampling cylinders 10 corresponding to the positions are taken out in turn.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soil sampling device for engineering planning and construction, characterized by: The invention comprises an outer cylinder (1) and an inner cylinder (5), wherein the inner cylinder (5) is located inside the outer cylinder (1), the upper end of the inner cylinder (5) is fixedly connected to a piston (4), and the piston (4) is slidably connected to the inner wall of the outer cylinder (1), the outer cylinder (1) is connected to an air intake pipe (3), and the air intake pipe (3) is located between the inner top wall of the outer cylinder (1) and the piston (4), and a return spring (13) is installed between the inner top wall of the outer cylinder (1) and the piston (4); A drill bit (8) is installed on the lower end surface of the inner cylinder (5), an air inlet pipe (2) is inserted into the piston (4), the lower end of the air inlet pipe (2) extends into the inner cylinder (5), and multiple groups of sampling components are equidistantly installed on the air inlet pipe (2), and the sampling components penetrate to the outside of the inner cylinder (5) and extend outward.

2. The soil sampling equipment for engineering planning and construction according to claim 1, characterized in that: The sampling assembly comprises a plurality of groups of limiting cylinders (9) arranged at equal intervals, and each limiting cylinder (9) is communicated with the air inlet pipe (2), and each group of limiting cylinders (9) is composed of a plurality of limiting cylinders (9) arranged circumferentially, and a sampling cylinder (10) is slidably connected in each limiting cylinder (9), and a return spring (12) is installed between two corresponding sampling cylinders (10).

3. The soil sampling equipment for engineering planning and construction according to claim 2, characterized in that: The inner cylinder (5) is provided with a plurality of through holes (11) in the circumferential direction, and each sampling cylinder (10) passes through the through hole (11) and extends outward from the inner cylinder (5).

4. The soil sampling device for engineering planning and construction according to claim 3 is characterized in that: Each of the limiting cylinders (9) is located inside the inner cylinder (5), and the diameter of the limiting cylinder (9) is larger than the aperture of the through hole (11).

5. The soil sampling equipment for engineering planning and construction according to claim 1, characterized in that: A plurality of connecting rods (7) are symmetrically mounted on the outer wall of the outer cylinder (1), a fixing plate (6) is commonly mounted on the lower ends of the plurality of connecting rods (7), and the fixing plate (6) is fixedly connected to the outer wall of the outer cylinder (1).

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