Testing device for detecting soil resistivity

Abstract

The utility model relates to the field of resistivity testing devices, in particular to a soil resistivity testing device which comprises a shell, the lower portion of the outer side of the shell is connected with a base in a sliding mode, the interior of the shell is connected with an extrusion base in a sliding mode, and a screw rod is installed at the upper end of the extrusion base through a bearing. A quantitative box is slidably connected to the interior of the shell, an electrode I is fixedly connected to the interior of the base, fixing frames are fixedly connected to the left end and the right end of the base, and pull ring frames are slidably connected to the interiors of the fixing frames. According to the soil quantitative sampling device, the quantitative box, the extrusion seat, the base and other structures are additionally arranged in the shell, soil is placed in the quantitative box in the using process, then the soil can be fixedly sampled after being leveled, and after sampling is completed, the soil in the quantitative box can be extruded with a fixed volume through the extrusion seat; therefore, the volume and density of the soil can be fixed, and the influence on the detection result can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of resistivity testing devices, in particular to a testing device for detecting soil resistivity. Background Art

[0002] A testing device for detecting soil resistivity proposed according to the patent authorization announcement number: CN220019458U. This utility model discloses a testing device for detecting soil resistivity, belonging to the technical field of soil resistivity testing. It includes a wiring and an insulating clip. The wiring is installed at the tail end of the insulating clip, and the other end of the wiring is connected to a bottom tube. Two edges of the opening of the bottom tube are provided with first mounting strips, and the upper end of the bottom tube is provided with a top frame. Two edges of the opening of the top frame are provided with second mounting strips. Mounting holes are formed in the end faces of the first mounting strips and the second mounting strips. One end of the top frame is a sealing disk, which seals the openings at one ends of the bottom tube and the top frame. A threaded tube is provided at the outer end of the sealing disk. In the testing device for detecting soil resistivity of this utility model, the main body is changed to a round tube that can be separated up and down, which is convenient for disassembling and assembling the bottom tube and the top frame. The pushable device is changed to a screw rod, a blocking disk and a spiral scraper. The residual soil on the inner walls of the bottom tube and the top frame is scraped off by the spiral scraper, reducing the influence of the residual soil on the test result, improving the cleanliness and facilitating the operation of the operator.

[0003] However, in the prior art, during the process of detecting the resistivity of soil, the volume and density of the soil will affect the resistance. In the prior art, the sampling volume of the soil each time during detection is relatively non-standard, affecting the test result of the detection. Therefore, the prior art needs to be improved. Summary of the Invention

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a testing device for detecting soil resistivity is proposed.

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

[0006] A testing device for detecting soil resistivity includes a housing. A base is slidably connected to the lower part of the outer side of the housing. An extrusion seat is slidably connected to the inside of the housing. A screw rod is installed at the upper end of the extrusion seat through a bearing. A quantitative box is slidably connected to the inside of the housing. An electrode one is fixedly connected to the inside of the base. Fixing frames are fixedly connected to both the left and right ends of the base. A pull ring frame is slidably connected to the inside of the fixing frame. A limiting frame is fixedly connected to the end of the pull ring frame close to the base. Springs are arranged on the outer side of the rod of the pull ring frame. Two symmetrically distributed guide bars are fixedly connected to the inside of the housing.

[0007] In addition, a preferred structure is that a threaded pipe is fixedly connected to the inside of the upper end of the outer shell, the screw rod passes through the threaded pipe and is threadedly connected to the threaded pipe, and the screw rod can drive the extrusion seat to move through the threaded fit with the threaded pipe.

[0008] In addition, a preferred structure is that the first electrode is slidably connected to the quantitative box, the lower end of the extrusion seat is fixedly connected to the second electrode, and the upper end of the screw rod is fixedly connected to a handwheel, which makes it more convenient to rotate the screw rod.

[0009] In addition, a preferred structure is that one end of the spring is fixedly connected to the limit frame, and the other end of the spring is fixedly connected to the fixed frame. The spring can drive the limit frame to automatically reset through its elastic force.

[0010] In addition, a preferred structure is that the limit frame is slidably connected to the outer shell, the limit frame is slidably connected to the fixed frame, and the limit frame contacts the base. The limit frame can limit the outer shell.

[0011] In addition, a preferred structure is that the guide bar is slidably connected to the groove of the extrusion seat, the guide bar is slidably connected to the quantitative box, and the quantitative box contacts the base. The guide bar can guide the movement of the extrusion seat.

[0012] The beneficial effects of the present utility model are as follows: By adding structures such as a quantitative box, an extrusion seat, and a base inside the outer shell, during use, the soil is placed inside the quantitative box, and after leveling the soil, the soil can be sampled fixedly. After sampling, the soil inside the quantitative box can be extruded with a fixed volume by the extrusion seat, so that the volume and density of the soil can be fixed, effectively avoiding affecting the test results. Description of the Drawings

[0013] Figure 1 is a three-dimensional structure diagram of a soil resistivity testing device proposed by the present utility model;

[0014] Figure 2 is a Figure 1 three-dimensional cross-section Figure 1 ;

[0015] Figure 3 A three-dimensional cross-section of a structure of a soil resistivity testing device proposed by the present utility model Figure 1 ; Figure 2 ;

[0016] Figure 4 is a three-dimensional structure diagram of the outer shell of a structure of a soil resistivity testing device proposed by the present utility model Figure 1 ;

[0017] Figure 5 The structure of a test device for detecting soil resistivity proposed by the present utility model Figure 2 The three-dimensional view of the quantitative box

[0018] In the figure: 1. Outer shell; 2. Base; 3. Extrusion seat; 4. Screw; 5. Handwheel; 6. Threaded tube; 7. Quantitative box; 8. Electrode 1; 9. Electrode 2; 10. Fixed frame; 11. Pull-ring frame; 12. Limiting frame; 13. Spring; 14. Guide bar Specific implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments

[0020] Referring to Figures 1-5 , a test device for detecting soil resistivity includes an outer shell 1. The lower part of the outer side of the outer shell 1 is slidably connected with a base 2. The inside of the outer shell 1 is slidably connected with an extrusion seat 3. The upper end of the extrusion seat 3 is installed with a screw 4 through a bearing. The inside of the outer shell 1 is slidably connected with a quantitative box 7. The inside of the base 2 is fixedly connected with an electrode 1 8. Fixed frames 10 are fixedly connected to both the left and right ends of the base 2. A pull-ring frame 11 is slidably connected inside the fixed frame 10. A limiting frame 12 is fixedly connected to the end of the pull-ring frame 11 close to the base 2. A spring 13 is arranged on the outer side of the rod of the pull-ring frame 11. Two symmetrically distributed guide bars 14 are fixedly connected inside the outer shell 1

[0021] Referring to Figures 1-5 , a threaded tube 6 is fixedly connected to the upper end inside the outer shell 1. The screw 4 passes through the threaded tube 6 and is threadedly connected with the threaded tube 6. The screw 4 can drive the extrusion seat 3 to move through the thread fit with the threaded tube 6. The electrode 1 8 is slidably connected with the quantitative box 7. The lower end of the extrusion seat 3 is fixedly connected with an electrode 2 9. The upper end of the screw 4 is fixedly connected with a handwheel 5, and the handwheel 5 can make the screw 4 more convenient to rotate

[0022] Referring to Figures 1-5 , one end of the spring 13 is fixedly connected with the limiting frame 12, and the other end of the spring 13 is fixedly connected with the fixed frame 10. The spring 13 can drive the limiting frame 12 to automatically reset through the elastic force. The limiting frame 12 is slidably connected with the outer shell 1, the limiting frame 12 is slidably connected with the fixed frame 10, and the limiting frame 12 is in contact with the base 2. The limiting frame 12 can limit the outer shell 1. The guide bar 14 is slidably connected with the groove of the extrusion seat 3, the guide bar 14 is slidably connected with the quantitative box 7, and the quantitative box 7 is in contact with the base 2. The guide bar 14 can guide the movement of the extrusion seat 3

[0023] In use, take out the quantitative box 7, then fill the soil inside the quantitative box 7. After filling, use tools such as a card to level the soil. After leveling, place the quantitative box 7 inside the base 2, and then slide the outer shell 1 into the base 2. During the sliding process, pull the pull ring holder 11. The pull ring holder 11 drives the limit holder 12 to move and compresses the spring 13. When the outer shell 1 is completely slid into the base 2, release the pull ring holder 11, and the spring 13 resets. The spring 13 can drive the limit holder 12 to slide into the outer shell 1 through its elastic force, thus completing the limitation of the outer shell 1. Then rotate the handwheel 5. The handwheel 5 drives the screw rod 4 to rotate. During the rotation of the screw rod 4, it can drive the extrusion seat 3 to move downward through the thread fit with the threaded tube 6. When the extrusion seat 3 enters the quantitative box 7, it can extrude the soil to reduce the size and quantity of the holes inside the soil. When the cross plate above the extrusion seat 3 contacts the quantitative box 7, stop rotating, so that the volume of the soil can be fixed. Then the resistance of the soil can be detected through the first electrode 8 and the second electrode 9.

[0024] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A soil resistivity testing device, comprising a housing (1), characterized in that: The lower outer portion of the outer shell (1) is slidably connected to a base (2), the inner portion of the outer shell (1) is slidably connected to an extrusion seat (3), the upper end of the extrusion seat (3) is mounted with a screw rod (4) via a bearing, the inner portion of the outer shell (1) is slidably connected to a quantitative box (7), the inner portion of the base (2) is fixedly connected to an electrode 1 (8), the left and right ends of the base (2) are fixedly connected to a fixing frame (10), the inner portion of the fixing frame (10) is slidably connected to a pull ring frame (11), the pull ring frame (11) is fixedly connected to one end of the pull ring frame (11) close to the base (2) to a limiting frame (12), a spring (13) is arranged on the outer side of a rod of the pull ring frame (11), and the inner portion of the outer shell (1) is fixedly connected to two symmetrically distributed guide bars (14).

2. A soil resistivity testing device according to claim 1, characterized in that: A threaded tube (6) is fixedly connected to the interior of the upper end of the housing (1), and the screw rod (4) passes through the threaded tube (6) and is connected to the threaded tube (6) via threads.

3. A soil resistivity testing device according to claim 1, characterized in that: The electrode 1 (8) is slidably connected to the quantitative box (7), the lower end of the extrusion seat (3) is fixedly connected to the electrode 2 (9), and the upper end of the screw (4) is fixedly connected to the hand wheel (5).

4. A soil resistivity testing device according to claim 1, characterized in that: One end of the spring (13) is fixedly connected to the limiting frame (12), and the other end of the spring (13) is fixedly connected to the fixing frame (10).

5. A soil resistivity testing device according to claim 1, characterized in that: The limiting frame (12) is slidably connected to the housing (1), the limiting frame (12) is slidably connected to the fixing frame (10), and the limiting frame (12) is in contact with the base (2).

6. A soil resistivity testing device according to claim 1, characterized in that: The guide bar (14) is slidably connected to the groove of the extrusion seat (3), the guide bar (14) is slidably connected to the quantitative box (7), and the quantitative box (7) is in contact with the base (2).

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