Self-locking coring cylinder
The self-locking mechanism of the self-locking core tube solves the problem of core detachment and slippage in traditional core tubes, enabling convenient locking and disassembly of the core, thus improving core extraction efficiency and equipment maintenance convenience.
Patent Information
- Application Number
- CN202520115998.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Traditional core-sampling cylinders are prone to core detachment during drill string lifting, and are difficult to detach after core expansion. Core slippage is also common, resulting in unsatisfactory sampling results.
A self-locking core barrel was designed, which has a self-locking mechanism, including an adjusting seat, a locking bolt, a fixing ring, an inner steel liner and steel claws. The core is pushed in to lock the core, and the steel claws are embedded in the surface of the core to achieve locking and limiting of the core.
It improves the locking effect of the core, reduces the risk of core detachment, facilitates the disassembly and maintenance of the core, and improves the core sampling efficiency.
Smart Images
Figure CN223621560U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drilling equipment technology, and in particular to a self-locking core tube. Background Technology
[0002] A core sampler is a tool used in geological exploration and engineering surveys, primarily for obtaining soil or rock samples. It effectively extracts representative samples from deep underground locations, and its main applications include construction engineering, mining, environmental monitoring, and forensic medicine.
[0003] However, traditional core barrels have the problem of core expansion making it difficult to detach from the barrel. During the drilling process, there is a situation where the core may detach from the barrel. Moreover, after the core expands, it is difficult to remove it from the barrel by hydraulic pushing. Methods such as knocking and breaking are often used, resulting in very unsatisfactory core recovery results. At the same time, when core slippage occurs during drilling, re-drilling and core recovery are often used, but the diameter and core recovery rate of re-drilling and core recovery are very poor.
[0004] Therefore, those skilled in the art have provided a self-locking core-taking cylinder to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-locking core sampling cylinder. This cylinder can clamp and lock the core sample, reducing the possibility of accidental core loss. Furthermore, the self-locking mechanism's easy-to-open structure allows users to conveniently disassemble the core sample.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A self-locking core barrel includes a main core barrel. A self-locking mechanism is provided in the middle of the inner wall of the main core barrel. The self-locking mechanism includes an adjusting seat. Locking bolts are threaded around the middle of the outer wall of the adjusting seat. A fixing ring is rotatably connected to the inner wall of the locking bolts. A placement groove is formed in the middle of the inner wall of the fixing ring. An elastic sheet is fixedly connected to the lower end of the inner wall of one side of the placement groove. An inner steel liner is rotatably connected to the inner wall of the placement groove. A steel claw is fixedly connected to the lower surface of the inner steel liner. A drill bit mechanism is provided on the lower surface of the main core barrel. The drill bit mechanism includes a drilling drill bit.
[0008] Compared with most traditional core sampling cylinders, the above technical solution has a simple structure, which makes it easier for users to operate the core sampling cylinder. The simple structure reduces the possibility of damage to the core sampling cylinder and also makes it easier for users to inspect and maintain the core sampling cylinder.
[0009] Furthermore, the adjusting seat is fixedly connected to the middle part of the outer wall of the main core cylinder;
[0010] The above technical solution enables the core to be locked and limited within the main core cylinder by the inner lining steel sheet on the adjusting seat.
[0011] Furthermore, a storage groove is provided in the middle of the inner wall of the adjustment seat;
[0012] The above technical solution allows for the storage and collection of the fixing ring.
[0013] Furthermore, limit strips are fixedly connected to all four sides of the bottom surface of the storage slot;
[0014] The above technical solution allows the direction and shape of the fixed ring's movement to be restricted by the limiting strip.
[0015] Furthermore, a rotating rod is fixedly connected to the middle of the outer wall of the inner steel lining sheet;
[0016] The above technical solution enables the inner steel sheet to be rotatably connected to the fixed ring via a rotating rod.
[0017] Furthermore, the drilling bit is fixedly connected to the lower surface of the main core cylinder;
[0018] The above technical solution enables the main core cylinder to be drilled and cored using a drilling bit.
[0019] Furthermore, a plurality of drill bits are fixedly connected to the lower surface of the drilling bit;
[0020] The above technical solution enables the drilling bit to grind and drill holes in the rock using the drill bit.
[0021] Furthermore, a PTFE plate is fixedly connected to the lower end of the inner wall of the drilling bit;
[0022] With the above technical solution, during drilling, as the core and steel sheet sink, the steel claw can be better embedded into the core under the action of the PTFE plate.
[0023] This utility model has the following beneficial effects:
[0024] 1. This utility model proposes a self-locking coring cylinder. Compared with most traditional coring cylinders, this coring cylinder is equipped with a self-locking mechanism. When the inner steel lining is not in the coring state, the multiple steel plates inside the coring cylinder are in a state where the upper opening is narrow and the lower opening is wide. As the rock core is pushed in, the upper and lower openings gradually become the same width or the upper opening is slightly wider than the lower opening. After the rock core is pushed to a specified height, the steel claws are just embedded in the surface of the rock core, thereby completing the self-locking of the rock core. This solves the problem of difficult coring of the target layer in the stratified drilling machine and the problem of rock core slippage or difficulty in detachment from the cavity after expansion in the coring cylinder, thus improving the effectiveness of the coring cylinder.
[0025] 2. The self-locking core sampling tube proposed in this utility model has a simple structure compared with most traditional core sampling tubes. The user can operate the core sampling tube more conveniently. The simple structure reduces the possibility of damage to the core sampling tube and also makes it easier for the user to inspect and maintain the core sampling tube. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of a self-locking core-taking cylinder proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the inner steel sheet structure of a self-locking core-taking cylinder proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the self-locking mechanism of a self-locking core-taking cylinder proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the fixing ring structure of a self-locking core-taking cylinder proposed in this utility model.
[0030] Legend:
[0031] 1. Main core tube;
[0032] 2. Self-locking mechanism; 201. Adjusting seat; 202. Storage slot; 203. Locking bolt; 204. Fixing ring; 205. Placement slot; 206. Elastic sheet; 207. Inner steel lining sheet; 208. Rotating rod; 209. Steel claw; 2010. Limiting strip;
[0033] 3. Drill bit mechanism; 301. Drill bit; 302. Drill cutter; 303. PTFE sheet. Detailed Implementation
[0034] 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.
[0035] Reference Figure 1-4 One embodiment provided by this utility model:
[0036] A self-locking core extractor includes a main core extractor 1. A self-locking mechanism 2 is provided in the middle of the inner wall of the main core extractor 1. The self-locking mechanism 2 includes an adjusting seat 201. Locking bolts 203 are threaded around the middle of the outer wall of the adjusting seat 201. A fixing ring 204 is rotatably connected to the inner wall of the locking bolts 203. A placement groove 205 is formed in the middle of the inner wall of the fixing ring 204. An elastic sheet 206 is fixedly connected to the lower end of the inner wall of one side of the placement groove 205. An inner lining steel sheet 2 is rotatably connected to the inner wall of the placement groove 205. 07. A steel claw 209 is fixedly connected to the lower surface of the inner steel sheet 207. A drill bit mechanism 3 is provided on the lower surface of the main core cylinder 1. The drill bit mechanism 3 includes a drilling drill bit 301. Through the cooperation between the above structures, the main core cylinder 1 can lock and limit the drilled rock core, so that the rock core can be easily taken out and disassembled. This solves the problem of difficult core taking of the target layer in the layered drilling machine and the problem of rock core slipping or difficult removal from the cavity after expansion in the core cylinder, thus improving the effect of the core cylinder.
[0037] The adjusting seat 201 is fixedly connected to the middle of the outer wall of the main core cylinder 1, so that the core can be locked and limited within the main core cylinder 1 by the inner lining steel plate 207 on the adjusting seat 201. A storage groove 202 is provided in the middle of the inner wall of the adjusting seat 201 to store the fixing ring 204. Limiting strips 2010 are fixedly connected around the bottom surface of the storage groove 202, so that the direction of movement and the shape of movement of the fixing ring 204 can be limited by the limiting strips 2010. A rotating rod 208 is fixedly connected to the middle of the outer wall of the inner lining steel plate 207, so that the inner lining steel plate 207 can... The drilling bit 301 is fixedly connected to the lower surface of the main core cylinder 1 by rotating the rod 208 on the fixed ring 204, so that the main core cylinder 1 can be drilled to obtain rock cores by the drilling bit 301. Multiple drill bits 302 are fixedly connected to the lower surface of the drilling bit 301, so that the drilling bit 301 can grind and drill holes in the rock by the drill bits 302. The lower end of the inner wall of the drilling bit 301 is fixedly connected to a PTFE plate 303. When the drill is lifted, as the rock core and steel plate sink, the steel claw 209 can be better embedded into the rock core under the action of the PTFE plate 303.
[0038] Working principle: First, the main core cylinder 1 is installed on the drilling equipment. As the drill bit mechanism 3 is started, the core enters the self-locking mechanism 2 along the PTFE plate 303. The core contacts the inner lining steel plate 207. As the core moves upward, the inner lining steel plate 207 gradually forms a state where the upper and lower openings are the same width or the upper opening is slightly wider than the lower opening. After the core is pushed to the specified height, the steel claw 209 is just embedded in the surface of the core. Finally, when the main core cylinder 1 is taken out, each locking bolt 203 is rotated. As the locking bolt 203 moves outward, the fixing ring 204 moves along the limit strip 2010 to the receiving groove 202, thereby loosening the clamping and fixing of the core. After completion, the fixing ring 204 is restored and it can be used again.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A self-locking core-collecting cylinder, comprising a main core-collecting cylinder (1), characterized in that: A self-locking mechanism (2) is provided in the middle of the inner wall of the main core cylinder (1). The self-locking mechanism (2) includes an adjusting seat (201). Locking bolts (203) are threaded around the middle of the outer wall of the adjusting seat (201). A fixing ring (204) is rotatably connected to the inner wall of the locking bolt (203). A placement groove (205) is provided in the middle of the inner wall of the fixing ring (204). An elastic sheet (206) is fixedly connected to the lower end of the inner wall of one side of the placement groove (205). An inner lining steel sheet (207) is rotatably connected to the inner wall of the placement groove (205). A steel claw (209) is fixedly connected to the lower surface of the inner lining steel sheet (207). A drill bit mechanism (3) is provided on the lower surface of the main core cylinder (1). The drill bit mechanism (3) includes a drilling drill bit (301).
2. The self-locking core-taking cylinder according to claim 1, characterized in that: The adjusting seat (201) is fixedly connected to the middle part of the outer wall of the main core cylinder (1).
3. A self-locking core-taking cylinder according to claim 1, characterized in that: A storage groove (202) is provided in the middle of the inner wall of the adjustment seat (201).
4. A self-locking core-taking cylinder according to claim 3, characterized in that: Limiting strips (2010) are fixedly connected to all four sides of the bottom surface of the storage slot (202).
5. A self-locking core-taking cylinder according to claim 1, characterized in that: A rotating rod (208) is fixedly connected to the middle of the outer wall of the inner lining steel sheet (207).
6. A self-locking core-taking cylinder according to claim 1, characterized in that: The drilling bit (301) is fixedly connected to the lower surface of the main core cylinder (1).
7. A self-locking core-taking cylinder according to claim 1, characterized in that: Multiple drill bits (302) are fixedly connected to the lower surface of the drilling bit (301).
8. A self-locking core-taking cylinder according to claim 1, characterized in that: The lower end of the inner wall of the drilling bit (301) is fixedly connected to a PTFE plate (303).