Easily-installed coring cylinder for inverted arch coring machine
By designing the combined structure of L-shaped protrusions and L-shaped grooves on the arch core collector, the time-consuming and labor-intensive problem of core collector splicing and separation caused by threaded connection is solved, which improves working efficiency and reduces the risk of core collector displacement.
Patent Information
- Application Number
- CN202421091392.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing arch core collector uses threaded core collectors to scatter and separate, and are time-consuming and labor-intensive, have low working efficiency, and are prone to displacement of the core collector, resulting in core collection failure.
A simple-installed core cartridge for a arch core collecting machine is designed, and the combination of L-shaped projections and L-shaped grooves is designed so that the core cartridge can be connected and separated easily and quickly, and works with the rotation of the core collecting machine, and remains connected when moving up and down.
The rapid installation and disassembly of the core cartridge is realized, which significantly improves the working efficiency of the core core extraction, solves the time-consuming and labor-intensive problems caused by threaded connections, and reduces the risk of core removal machine displacement.
Smart Images
Figure CN222689459U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of concrete entity detection, in particular to a simple-to-install coring barrel for an invert coring machine. Background Art
[0002] The tunnel invert is a reverse arch structure set at the bottom of the tunnel to improve the stress conditions of the upper supporting structure. It is one of the main components of the tunnel structure. Depending on the geological conditions, the depth of the invert is mostly between 1-3m. In order to detect parameters such as the depth and strength of the invert structure, the main detection method is the core sampling method using a coring machine.
[0003] The invert core sampling detection method is one of the main methods for tunnel entity quality inspection. With the popularization of this detection method, more and more high-performance coring machines and high-strength coring barrels have emerged. The utility model relies on a tunnel project with a total length of 12km. The frequency of invert coring is huge. With the increase in the number of invert coring detections in our department, it is found that a major factor affecting the coring efficiency is the splicing and separation of the coring barrel. The depth of our invert is mostly about 2m. We use the domestically advanced high-power invert coring machine. It takes 3 times of splicing and separation of the coring barrel to take a 2m core sample. The average time for taking a 2m core sample is about 1.5h. However, after observation, it takes about 40min to change the core barrel, which takes up a lot of time. Nowadays, most of the coring barrels on the market are threaded. With the rotation of the coring machine and the friction of the core sample, the coring barrel will become tighter and tighter. Each replacement requires the use of a chain wrench or a tightening wrench that matches the coring barrel, which is time-consuming and labor-intensive. In addition, it takes a lot of force to loosen the coring barrel during replacement, which can easily cause the coring machine to move, resulting in failure of coring at that position and the need to reselect the coring point. It can be seen that the update and iteration of the coring barrel for the invert coring machine is an inevitable trend. Summary of the invention
[0004] The utility model provides a core barrel for an invert coring machine that is easy to install and easy to operate, which can effectively increase the efficiency of invert coring and solve the technical problems that the splicing and separation of the core barrel of a core drilling machine using threaded connection is time-consuming and labor-intensive, the working efficiency is low, and the core drilling machine is easily displaced, resulting in the failure of coring at that position.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a simple-to-install coring barrel for an inverted arch coring machine, comprising a coring barrel body, the coring barrel body comprising a barrel outer wall and a barrel inner wall; the coring barrel body is provided with a receiving end at one end along its axial direction, and an insertion end at the other end; the insertion end comprises the barrel inner wall, and a plurality of L-shaped protrusions arranged along the axial direction are distributed along the circumferential outer side of the barrel inner wall, and the insertion end has no barrel outer wall; the receiving end comprises the barrel outer wall, a connecting layer is provided inside the barrel outer wall, and a plurality of L-shaped grooves arranged along the axial direction are opened along the circumference of the connecting layer, the L-shaped grooves correspond to the L-shaped protrusions one by one, the widest position at the bottom of the L-shaped protrusion is consistent with the narrowest position at the top of the L-shaped groove, and when the receiving end is connected to the adjacent insertion end, the L-shaped protrusion is inserted into the L-shaped groove, and the direction of the protruding end at the bottom of the L-shaped protrusion is consistent with the rotation direction of the inverted arch coring machine.
[0006] Working principle and process: First, take two core barrels, align the L-shaped protrusion at the insertion end of one core barrel with the L-shaped groove at the receiving end of the other core barrel, and then insert it. Then, rotate the inserted core barrel along the rotation direction of the inverted arch coring machine until the L-shaped protrusion overlaps with the lower part of the L-shaped groove. During implementation, the design of the combination of the L-shaped protrusion and the L-shaped groove will make the core barrel work together with the rotation of the inverted arch coring machine, and the design of the L-shaped lower part will also prevent the core barrel from being disjointed when moving up and down.
[0007] Furthermore, an annular groove is provided on the outer wall of the barrel at the side of the receiving end away from the barrel body of the coring barrel, and a sealing ring 6 matching the annular groove is provided on the inner wall of the barrel at the side of the inserting end close to the barrel body of the coring barrel.
[0008] Furthermore, the core barrel body is a 3 mm hard seamless steel barrel.
[0009] Furthermore, a plurality of L-shaped protrusions are evenly distributed on the outer side of the inner wall of the cylinder at the insertion end.
[0010] Furthermore, a plurality of L-shaped grooves are evenly distributed on the connection layer of the receiving end.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] The utility model discloses a coring barrel for an inverted arch coring machine, which is easy to install and disassemble, saves time and labor, can effectively improve the working efficiency of inverted arch coring, solves the drawback of using old-style threaded coring barrels for many years in China, and has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 for Figure 1 Front view of the core barrel.
[0014] Figure 2Schematic diagram of the connection between the insertion end and the receiving end of the core barrel.
[0015] Figure 3 Schematic diagram of the L-shaped protrusion structure.
[0016] Figure 4 Schematic diagram of the L-shaped groove structure.
[0017] The following are marked in the figure:
[0018] 1-coring barrel body, 2-inner wall of barrel, 3-outer wall of barrel, 4-insertion end, 5-L-shaped protrusion, 6-sealing ring, 7-receiving end, 8-L-shaped groove, 9-annular groove. DETAILED DESCRIPTION
[0019] The present invention is further described below in conjunction with specific embodiments. Example 1
[0020] like Figure 1-4 As shown, a simple-to-install coring barrel for an inverted arch coring machine comprises a coring barrel body 1, wherein the coring barrel body 1 comprises a barrel outer wall 3 and a barrel inner wall 2; the coring barrel body 1 is provided with a receiving end 7 at one end along its axial direction, and an inserting end 4 at the other end; the inserting end 4 comprises the barrel inner wall 2, and a plurality of L-shaped protrusions 5 arranged along the axial direction are distributed circumferentially outwardly along the barrel inner wall 2, and the inserting end 4 has no barrel outer wall 3; the receiving end 7 comprises the barrel outer wall 3, a connecting layer is provided in the barrel outer wall 3, and a plurality of L-shaped grooves 8 arranged along the axial direction are opened along the circumference of the connecting layer, the L-shaped grooves 8 correspond to the L-shaped protrusions 5 one by one, the widest position at the bottom of the L-shaped protrusion 5 is consistent with the narrowest position at the top of the L-shaped groove 8, and when the receiving end 7 is connected to the adjacent inserting end 4, the L-shaped protrusion 5 is inserted into the L-shaped groove 8, and the direction of the protruding end at the bottom of the L-shaped protrusion 5 is consistent with the rotation direction of the inverted arch coring machine.
[0021] Furthermore, in order to facilitate sealing, an annular groove 9 is provided on the outer wall 3 of the core barrel 1 on the side where the receiving end 7 is away from the body of the core barrel, and a sealing ring 6 matching the annular groove 9 is provided on the inner wall 2 of the core barrel 1 on the side where the insertion end 4 is close to the body of the core barrel.
[0022] Furthermore, the core barrel body 1 is a 3 mm hard seamless steel barrel.
[0023] Furthermore, a plurality of L-shaped protrusions 5 are evenly distributed on the outer side of the inner wall 2 of the cylinder at the insertion end 4, which is an optimal design.
[0024] Furthermore, a plurality of L-shaped grooves 8 are evenly distributed on the connection layer of the receiving end 7, which is an optimal design.
[0025] In specific implementation, firstly, two coring barrels are taken, and the L-shaped protrusion 5 of the insertion end 4 of one of the coring barrels is aligned with the L-shaped groove 8 of the receiving end 7 of the other coring barrel, and then the inserted coring barrel is rotated along the rotation direction of the inverted arch coring machine until the L-shaped protrusion 5 overlaps with the lower part of the L-shaped groove 8. In implementation, the design of the combination of the L-shaped protrusion 5 and the L-shaped groove 8 enables the coring barrel to work together with the rotation of the inverted arch coring machine, and the design of the L-shaped lower part also enables the coring barrel to move up and down without being disconnected.
[0026] The above-mentioned combination forms and sizes are only practical operation cases of the utility model, and do not impose any form of limitation on the utility model. Any simple modification made to the above embodiments based on the technical content of the utility model still falls within the scope of the technical solution of the utility model.
Claims
1. A simple-to-install coring barrel for an invert coring machine, characterized in that: The invention comprises a core-taking barrel body (1), wherein the core-taking barrel body (1) comprises a barrel outer wall (3) and a barrel inner wall (2); the core-taking barrel body (1) is provided with a receiving end (7) at one end along its axial direction, and an insertion end (4) at the other end; the insertion end (4) comprises the barrel inner wall (2), and a plurality of L-shaped protrusions (5) arranged along the axial direction are distributed on the outer side of the barrel inner wall (2); the insertion end (4) has no barrel outer wall (3); the receiving end (7) comprises the barrel outer wall (3) A connecting layer is provided inside the outer wall (3) of the cylinder, and a plurality of L-shaped grooves (8) arranged along the axial direction are provided along the circumference of the connecting layer. The L-shaped grooves (8) correspond to the L-shaped protrusions (5) one by one. The width of the widest position at the bottom of the L-shaped protrusion (5) is consistent with the width of the narrowest position at the top of the L-shaped groove (8). When the receiving end (7) is connected to the adjacent insertion end (4), the L-shaped protrusion (5) is inserted into the L-shaped groove (8), and the direction of the protruding end at the bottom of the L-shaped protrusion (5) is consistent with the rotation direction of the invert coring machine.
2. The easily installed coring barrel for an invert coring machine according to claim 1, characterized in that: An annular groove (9) is provided on the outer wall (3) of the core barrel body (1) at the receiving end (7) away from the inner wall (3) of the core barrel body (1), and a sealing ring (6) matching the annular groove (9) is provided on the inner wall (2) of the core barrel body (1) at the insertion end (4) close to the inner wall (2) of the core barrel body (1).
3. The easily installed coring barrel for an invert coring machine according to claim 1, characterized in that: The core barrel body (1) is a 3 mm hard seamless steel barrel.
4. The easily installed coring barrel for an invert coring machine according to claim 1, characterized in that: A plurality of L-shaped protrusions (5) are evenly distributed on the outer side of the inner wall (2) of the cylinder at the insertion end (4).
5. The easily installed coring barrel for an invert coring machine according to claim 1, characterized in that: A plurality of L-shaped grooves (8) are evenly distributed on the connection layer of the receiving end (7).