Coring pipe for coring drilling tool for geological exploration

Abstract

The utility model relates to a coring pipe for a coring drilling tool for geological exploration, which comprises two half coring pipes which are designed to divide the coring pipe into two parts, a plurality of I-shaped insertion holes are formed at the joint of the two half coring pipes at intervals along the length direction of the two half coring pipes after the two half coring pipes are spliced, and the I-shaped insertion holes are divided into two parts which are respectively arranged on the two half coring pipes. I-shaped insertion holes are formed in the two half coring pipes, I-shaped insertion blocks are detachably arranged on the I-shaped insertion holes, the I-shaped insertion blocks are attached to the edges of the I-shaped insertion holes through cooperation of bevel edges and straight edges from outside to inside, snap spring grooves are formed in the two half coring pipes and the I-shaped insertion blocks, snap springs are arranged in the snap spring grooves, and the snap springs are clamped in the snap spring grooves. The I-shaped inserting block and the clamping spring cannot protrude out of the outer wall of the coring pipe. The coring pipe has the advantages of being reasonable in structural design, firm and reliable in connection of the two split half coring pipes, small in impact on threaded connection, convenient to disassemble and assemble, long in service life and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to geological survey tool technical field, concretely relates to geological survey coring drill with coring tube. BACKGROUND

[0002] Coring drill is the indispensable equipment in geological survey, and the main role of coring drill is to collect underground or underwater minerals, soil and other samples and to research and analyze. The coring tube is the core component of the coring drill, and the core needs to be taken out during work.

[0003] The traditional coring tube generally adopts a circular tube structure design, but because the coring tube is long and has a small inner diameter, the core inside the coring tube is usually taken out by knocking the coring tube several times in actual application, which not only wastes time and effort, but also easily breaks and crushes the core, has poor preservation integrity, and affects subsequent detection.

[0004] Through inquiries and visits to relevant production enterprises, it is known that the existing technology mainly adopts the design concept of dividing the coring tube into two halves to achieve opening and closing, and the two halves of the coring tube are combined together through threaded connection at both ends. For example, the coring tube structure for drill disclosed in Chinese patent (authorized publication number: CN203559837U), and a combined coring tube disclosed in Chinese patent (authorized publication number: CN217582071U), the core of these solutions is to divide the coring tube into two halves to facilitate opening.

[0005] Although the above solutions achieve the purpose of facilitating the taking out of the core, but through visits, it is known that the above solutions have poor effect in actual application, which leads to difficult popularization and application. Through visits and experimental analysis, it is found that the existing solutions mainly have the following shortcomings, first, the two halves of the coring tube need to be aligned and then threaded connected and installed, the threaded connection of the complete coring tube is relatively simple, but the threaded connection of the two halves of the coring tube is very laborious in actual operation, and usually needs the cooperation of multiple people; second, the two halves of the coring tube are fastened together by threaded connection, which is theoretically feasible, but since the coring tube is not integral, the two halves of the coring tube are not balanced when stressed, so the impact on the threaded connection is not balanced, which greatly damages the threaded connection, and the coring tube needs to be frequently disassembled and used, which further accelerates the damage of the threaded connection, so the service life of the coring tube is short. Of course, some researchers use a clamp to connect the two halves of the coring tube, which is theoretically feasible, but in actual application, the clamp obviously exceeds the outer diameter of the coring tube, which seriously affects normal drilling work. Therefore, it is necessary to optimize the structure of the existing coring tube to extend the service life under the premise of facilitating disassembly.

[0006] It should be noted that the above content belongs to the technical cognition of the inventor and does not necessarily constitute the prior art. Utility model content:

[0007] The utility model discloses a core tube for geological survey coring drilling rig, which has the advantages of reasonable structure design, firm and reliable connection of two half core tubes, small impact on thread connection, easy disassembly and assembly, long service life and the like.

[0008] The utility model discloses a core tube for geological survey coring drilling rig, which has the advantages of reasonable structure design, firm and reliable connection of two half core tubes, small impact on thread connection, easy disassembly and assembly, long service life and the like.

[0009] The utility model discloses a core tube for geological survey coring drilling rig, which has the advantages of reasonable structure design, firm and reliable connection of two half core tubes, small impact on thread connection, easy disassembly and assembly, long service life and the like.

[0010] The utility model discloses a core tube for geological survey coring drilling rig, which has the advantages of reasonable structure design, firm and reliable connection of two half core tubes, small impact on thread connection, easy disassembly and assembly, long service life and the like.

[0011] On the basis of the existing core tube, the I-shaped insertion hole and the I-shaped insertion block are designed, especially the straight edge and the inclined edge are matched, the two half core tubes are spliced together, the axial and radial two-way limiting is realized through the straight edge, the impact on the thread connection is avoided, the thread is effectively protected, the accurate positioning is realized through the inclined edge, the spring groove and the spring are designed, and the I-shaped insertion block can be limited in the I-shaped insertion hole through the spring.

[0012] The I-shaped insertion block is axially provided with a hook hole at the position corresponding to the clamping groove groove. DRAWINGS:

[0013] Figure 1 It is the structure schematic view of the core tube of the utility model;

[0014] Figure 2 It is the A-A direction sectional view in Figure 1

[0015] Figure 3 It is the installation schematic view of the I-shaped insertion block of the utility model;

[0016] Figure 4 It is the explosion drawing of the I-shaped insertion block and the I-shaped insertion hole cooperation of the utility model;

[0017] Figure 5 ​The utility model discloses a stereogram of the I-shaped plug-in block.

[0018] Figure 6 The utility model discloses a plan view of the I-shaped plug-in block.

[0019] Figure 7 For Figure 6 The sectional view of B-B in the figure.

[0020] In the figure, 1, core tube, 2, half core tube, 3, I-shaped jack, 4, I-shaped plug-in block, 5, bevel, 6, straight edge, 7, spring groove, 8, spring, 9, hook hole, 10, hook. Specific implementation:

[0021] In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail in the form of example by combining with the attached drawings of the specification.

[0022] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model, but the utility model can also be implemented by other ways different from the description, therefore, the protection scope of the utility model is not limited by the following disclosed specific embodiments.

[0023] Each embodiment in the specification adopts the progressive mode and describes, and the same and similar parts between each embodiment can be understood by each other, and each embodiment emphasizes the difference with other embodiments.

[0024] In the utility model, unless another explicit provision and limitation, the terms "have", "set", "connect" and other terms should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or integral ; Can be mechanical connection, can be direct connection, also can be indirectly connected through the intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0025] As Figures 1-7As shown, the geological exploration coring drill uses a coring tube, which comprises two half coring tubes 2 designed by dividing the coring tube 1 into two halves, a plurality of I-shaped insertion holes 3 are arranged along the length direction at the joint between the two half coring tubes 2, the I-shaped insertion holes 3 are arranged on the two half coring tubes 2 respectively, the I-shaped insertion holes 3 are detachably provided with I-shaped insertion blocks 4, the I-shaped insertion blocks 4 are matched with the edge of the I-shaped insertion holes 3 from outside to inside by using the bevel 5 and the straight edge 6, the two half coring tubes 2 and the I-shaped insertion blocks 4 are provided with snap spring grooves 7, the snap spring grooves 7 are provided with snap springs 8, and the I-shaped insertion blocks 4 and the snap springs 8 do not protrude from the outer wall of the coring tube 1. On the basis of dividing the coring tube 2 into two halves, the I-shaped insertion holes 3 and the I-shaped insertion blocks 4 are designed, especially the straight edge 6 and the bevel 5 are matched, the two half coring tubes 2 are spliced together, the axial and radial double-directional limiting is realized by the straight edge 6, the impact on the threaded connection is avoided, the threaded connection is effectively protected, the precise positioning is realized by the bevel 5, the snap spring grooves 7 and the snap springs 8 are designed, and the I-shaped insertion blocks 4 are limited in the I-shaped insertion holes 3 by the snap springs 8.

[0026] The I-shaped insertion blocks 4 are axially provided with hook holes 9 at positions corresponding to the snap spring grooves 7. The I-shaped insertion blocks 4 are conveniently taken out of the I-shaped insertion holes 3 by using hooks 10.

[0027] The above specific embodiment cannot be regarded as the limitation of the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the embodiment of the utility model falls within the protection scope of the utility model.

[0028] The details not described in the utility model are the known technology of the person skilled in the art.

Claims

1. A core barrel for use in geological exploration coring drills, characterised in that, The application relates to a coring tube which comprises two half coring tubes designed by splitting a coring tube into two halves, a plurality of I-shaped insertion holes are arranged on the two half coring tubes along the length direction of the two half coring tubes at intervals, the I-shaped insertion holes are arranged on the two half coring tubes respectively, detachable I-shaped insertion blocks are arranged on the I-shaped insertion holes, the I-shaped insertion blocks are matched with the I-shaped insertion holes by using the outer-to-inner bevel and straight edge, spring retaining grooves are arranged on the two half coring tubes and the I-shaped insertion blocks, and springs are arranged in the spring retaining grooves, the I-shaped insertion blocks and the springs do not protrude from the outer wall of the coring tube.

2. The coring tube for use in a geological survey coring drill according to claim 1, characterized in that, Hook holes are arranged on the I-shaped insertion blocks in the positions corresponding to the spring retaining grooves.

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