A coring ring cutter structure

Abstract

The utility model relates to a soil sampler technology field discloses a soil sampler ring cutter structure, including main frame, the main frame top is connected with first threaded column with screw thread, first threaded column bottom fixedly connected with protective sheath, and the protective sheath bottom is connected with soil ring with screw thread, the first threaded column top is connected with second threaded column with screw thread, and second threaded column extends to soil ring inner chamber, second threaded column bottom fixedly connected with limit ring, and limit ring can close soil ring bottom, limit ring bottom fixedly connected with drill bit, this soil sampler ring cutter structure, through the cooperation of second threaded column and limit ring, can close soil ring bottom in the early stage of soil sampling, avoid the soil in soil ring inner chamber in advance when not reaching the preset depth, guarantee soil sample purity, and the drill bit of conical spiral structure can drill into the soil guide in advance, and simultaneously, it is convenient to adjust the soil sampling depth, and the threaded adjusting structure is matched, can accurately obtain the soil sample of different depth, satisfies the diversified soil sampling demand.

Description

Technical Field

[0001] The utility model relates to the technical field of soil samplers, in particular to a soil sampler cutting ring structure. Background Art

[0002] In engineering geological exploration and investigation work, in order to obtain the physical and mechanical performance indexes of foundation soil, besides in-situ tests, the main method is to carry out indoor geotechnical tests after drilling and sampling. To obtain undisturbed soil samples close to the natural structure, the soil sampler cutting ring structure is the core equipment for acquiring soil samples in the fields of geological investigation, soil detection and the like. Its soil sampling accuracy, soil sample purity and depth adaptability directly affect the accuracy and reliability of detection results. However, the existing soil sampler cutting ring structures still have many technical defects in practical applications, and are difficult to meet the demand for accurate soil sampling: The soil sampling cavity of the traditional soil sampler cutting ring is mostly an open structure. During the soil sampling process, when the cutting ring does not reach the preset soil sampling depth, shallow soil easily enters the interior of the soil sampling cavity in advance under the action of gravity or soil sampling pressure, which leads to the final obtained soil sample being mixed with soil components of different depths, the soil sample purity is low, the physical and chemical properties of the soil at the target depth cannot be truly reflected, and further the accuracy of subsequent detection and analysis is affected. Contents of the Utility Model

[0003] In view of the deficiencies in the prior art, the utility model provides a soil sampler cutting ring structure, which has the advantage of positioning to ensure the purity of soil samples and avoids the problem of poor soil sampling accuracy.

[0004] To achieve the purpose of ensuring the purity of soil samples, the utility model provides the following technical solutions: A soil sampler cutting ring structure comprises a main frame, the top of the main frame is in threaded connection with a first threaded column, and the structure further comprises: The bottom end of the first threaded column is fixedly connected with a protective sleeve, the bottom of the protective sleeve is in threaded connection with a soil sampling ring, the top of the first threaded column is in threaded connection with a second threaded column, the second threaded column extends to the inner cavity of the soil sampling ring, the bottom end of the second threaded column is fixedly connected with a limit ring, the limit ring can seal the bottom end of the soil sampling ring, the bottom end of the limit ring is fixedly connected with a drill bit, and the drill bit can extend to the outer side of the soil sampling ring.

[0005] According to some embodiments, the soil sampling ring and the protective sleeve have the same inner diameter and are arranged coaxially.

[0006] According to some embodiments, the top side walls of the first threaded column and the second threaded column are both fixedly connected with a rotating knob, a limit post is inserted into the side wall of the first threaded column, and the limit post can penetrate through the first threaded column and the second threaded column.

[0007] According to some embodiments, the main frame is configured as a several-shaped structure, two sides of the bottom of the main frame are both fixedly connected with inserting posts, and the bottoms of the inserting posts are tapered.

[0008] According to some embodiments, the bottom end of the soil-collecting ring is provided with an annular cutting edge that is inclined towards the center. Beneficial effects

[0009] This utility model provides a soil sampler ring cutter structure, which has the following beneficial effects: The soil sampler's ring cutter structure, through the cooperation of the second threaded post and the limiting ring, can seal the bottom of the soil sampling ring in the early stage of soil sampling, preventing soil from entering the inner cavity of the soil sampling ring before reaching the preset depth, thus ensuring the purity of the soil sample. The conical spiral structure of the drill bit can drill into the soil in advance for guidance, and at the same time, it is easy to adjust the soil sampling depth. With the threaded adjustment structure, it can accurately obtain soil samples at different depths to meet diverse soil sampling needs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the device of this utility model; Figure 2 This is a schematic diagram (front view) of the structure of the device of this utility model; Figure 3 for Figure 2 The local magnified structure of point A in the middle; Figure 4 This is a schematic diagram of the sampling ring moving downwards according to this utility model; Figure 5 This is a schematic diagram of the sampling structure of the sampling ring of this utility model.

[0011] In the diagram: 1. Main frame; 101. First threaded post; 2. Protective sleeve; 201. Soil sampling ring; 202. Second threaded post; 203. Limiting ring; 204. Drill bit; 3. Rotary knob; 301. Limiting post; 302. Insert post. Detailed Implementation

[0012] 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.

[0013] Reference Figures 1-5A ring cutter structure for a soil sampler, comprising a main frame 1. The main frame 1 is integrally processed into a "several"-shaped structure, which can provide a stable support base and is convenient for an operator to hold and position. An internally threaded hole is opened at the center of the horizontal section on the top of the main frame 1, and the internally threaded hole is adapted to the external thread of the first threaded column 101, so as to realize the threaded connection between the main frame 1 and the first threaded column 101. The vertical height of the first threaded column 101 relative to the main frame 1 can be adjusted by rotating the first threaded column 101. Insertion columns 302 are fixedly connected to both sides of the bottom of the main frame 1. The insertion columns 302 are arranged along the vertical direction, and the bottom thereof is processed into a tapered structure. The tapered tip facilitates quick insertion into the soil, so as to realize stable positioning of the main frame 1 at the soil sampling operation point and prevent the main frame 1 from shifting during the soil sampling process.

[0014] With reference to Figure 2 The first threaded column 101 is a cylindrical rod-shaped structure, the bottom end of which is fixedly connected with a protective sleeve 2. The protective sleeve 2 is a cylindrical tubular structure, and an internal thread is opened on the inner side of the bottom thereof. The soil sampling ring 201 is a cylindrical structure with an open upper end and an annular cutting edge at the lower end, and the outer side of the upper end thereof is processed with an external thread adapted to the internal thread at the bottom of the protective sleeve 2. The detachable connection between the protective sleeve 2 and the soil sampling ring 201 is realized by thread screwing. To ensure that the soil sample enters smoothly without shifting during the soil sampling process, the inner diameters of the soil sampling ring 201 and the protective sleeve 2 are set to the same size, and the two are kept coaxially arranged after assembly, so that the soil sample can enter the inner cavity of the soil sampling ring 201 stably.

[0015] With reference to Figure 4 and Figure 5 The top of the first threaded column 101 is axially provided with an internally threaded hole penetrating to the bottom end thereof, and the internally threaded hole is adapted to the external thread of the second threaded column 202, so as to realize the threaded connection between the two. The length of the second threaded column 202 is greater than the sum of the lengths of the first threaded column 101 and the protective sleeve 2, such that after the second threaded column 202 is screwed into the first threaded column 101, the lower end thereof can extend into the inner cavity of the soil sampling ring 201. A limit ring 203 is fixedly connected to the bottom end of the second threaded column 202. The limit ring 203 is a circular sheet-shaped structure, and the outer diameter thereof is precisely adapted to the inner diameter of the soil sampling ring 201. When the second threaded column 202 is screwed down to the limit position, the limit ring 203 can completely fit the inner side of the bottom end of the soil sampling ring 201, so as to realize the sealing of the bottom end of the soil sampling ring 201 and prevent soil from entering the inner cavity of the soil sampling ring 201 before the soil sampling depth is reached. A drill bit 204 is fixedly connected to the bottom end of the limit ring 203 by welding. The drill bit 204 adopts a tapered spiral structure, and the length thereof is set to be extendable to the outside of the soil sampling ring 201, which is convenient for drilling into the soil in the initial stage of soil sampling and adjusting the soil sampling depth.

[0016] With reference to Figure 3A rotating knob 3 is fixedly connected to the top sidewall of both the first threaded post 101 and the second threaded post 202. The rotating knob 3 has an irregular structure. Rotating the first threaded post 101 or the second threaded post 202, a through hole is opened radially on the sidewall of the first threaded post 101. The limiting post 301 is inserted into the through hole of the first threaded post 101 and passes through the through hole of the second threaded post 202, which can realize the relative fixation of the first threaded post 101 and the second threaded post 202, and prevent the second threaded post 202 from being displaced due to vibration during the soil extraction process.

[0017] Reference Figure 5 The bottom end of the soil sampling ring 201 is machined with an annular cutting edge that slopes towards the center, which facilitates the insertion of the soil sampling ring 201 into the soil for sampling. Working method: The operator moves the main frame 1 to the location where soil needs to be extracted. By tapping the top of the main frame 1, the conical inserts 302 on both sides of the bottom are inserted into the soil, thus stabilizing the main frame 1. Then, the operator holds the knob 3 at the top of the second threaded column 202 and rotates the second threaded column 202, causing the second threaded column 202 to drive the drill bit 204 downward until the drill bit 204 extends to a suitable length outside the soil extraction ring 201. The operator then holds the knob 3 at the top of the first threaded column 101 and rotates the first threaded column 101 clockwise, causing the protective sleeve 2 and the soil extraction ring 201 to move downward. The drill bit 204 rotates first to drill into the soil for guidance, while the soil extraction ring 201 slides downward. Due to the presence of soil at the bottom of the soil extraction ring 201... Due to the limiting effect of the limiting ring 203, soil will not enter the inner cavity of the soil sampling ring 201 when it moves downward. When the soil sampling ring 201 reaches the predetermined depth, the second threaded column 202 is rotated, which drives the drill bit 204 and the limiting ring 203 to move into the inner cavity of the protective sleeve 2. At this time, the bottom of the soil sampling ring 201 opens. Then, the first threaded column 101 is rotated, which drives the soil sampling ring 201 to rotate and move downward. The annular cutting edge at the bottom of the soil sampling ring 201 cuts the soil, and the soil is sampled in the inner cavity of the soil sampling ring 201. In summary, it is convenient to sample soil at different depths. The soil in the soil sampling ring 201 and its inner cavity can be removed by rotating the first threaded column 101.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil sampler ring cutter structure, comprising a main frame (1), characterized in that: The top of the main frame (1) is threadedly connected with a first threaded post (101), and the device further comprises: The bottom end of the first threaded post (101) is fixedly connected with a protective sleeve (2), the bottom of the protective sleeve (2) is threadedly connected with a soil sampling ring (201), the top of the first threaded post (101) is threadedly connected with a second threaded post (202), and the second threaded post (202) extends into the inner cavity of the soil sampling ring (201), the bottom end of the second threaded post (202) is fixedly connected with a limit ring (203), and the limit ring (203) can seal the bottom end of the soil sampling ring (201), the bottom end of the limit ring (203) is fixedly connected with a drill bit (204), and the drill bit (204) can extend to the outside of the soil sampling ring (201).

2. The soil sampler ring cutter structure according to claim 1, characterized in that: The soil sampling ring (201) and the protective sleeve (2) have the same inner diameter and are arranged coaxially.

3. The soil sampler ring cutter structure according to claim 2, characterized in that: The top side walls of the first threaded post (101) and the second threaded post (202) are both fixedly connected with a turning knob (3), a limit post (301) is inserted through the side wall of the first threaded post (101), and the limit post (301) can penetrate through the first threaded post (101) and the second threaded post (202).

4. The soil sampler ring cutter structure according to claim 3, characterized in that: The main frame (1) is configured in a "several"-shaped structure, both sides of the bottom of the main frame (1) are fixedly connected with inserting posts (302), and the bottom of each inserting post (302) is arranged in a conical shape.

5. The soil sampler ring cutter structure according to claim 4, characterized in that: The bottom end of the soil sampling ring (201) is provided with an annular cutting edge inclined toward the center.

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