CN113175304B

CN113175304B - Drill rod

Info

Publication number: CN113175304B
Application number: CN202110464760.8A
Authority: CN
Inventors: 张亚东
Original assignee: Shanda Environmental Restoration Co ltd
Current assignee: Shanda Environmental Restoration Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2023-08-29
Anticipated expiration: 2041-04-27
Also published as: CN113175304A

Abstract

The invention provides a drill rod comprising one or more connecting rods; and a drilling rod connected with the one or more connecting rods, the drilling rod comprising a drilling cylinder arranged on the outer layer and a sampling cylinder arranged on the inner layer, the sampling cylinder comprising two or more cylinders which are combined into a whole through mutually matched convex bolts and grooves arranged on the cylinder body and a fixing nut, wherein the top of the fixing nut is provided with a lifting ring so as to separate the sampling cylinder from the drilling cylinder, thereby obtaining a complete and undisturbed drilling sample. The drill rod is convenient and efficient to use, and can take out complete drilling samples without disturbance and (exogenous) pollution.

Description

Drill rod

Technical Field

The invention relates to the technical field of soil drilling machine equipment, soil detection equipment and environment restoration, in particular to a drill rod.

Background

With the rapid development of economy, people are paying more attention to the safety and quality of surrounding production, living and other environments. There are also increasing activities such as environmental investigation, engineering exploration, geological investigation, and model construction. The demands for drilling and sampling the soil core are also increased, and the use of the soil core sampling drilling machine is also increased frequently.

In general, in operation, a soil core sampling drill is used to press or screw a drill rod into soil, so that the soil is directly poured into a hollow drill rod. And after the drill rod is put forward, taking out the soil core sample, horizontally observing the shape of the soil layer type, the structure, the depth and the like according to the sequence, and cutting and sampling according to the requirement.

Currently, a common way to take out a soil core sample from a drill rod is to squeeze the soil core sample out of a core barrel by using water pressure and air pressure, or knock the outer wall of the drill rod, and drop the soil core sample from the drill rod by using the self gravity action of the soil core. The water pressure mode can pollute the soil core, influence the subsequent sampling and detection, and damage loose silt and silt samples. Because the air pressure mode is difficult to control, when the soil is softer, distortion or fracture phenomenon often occurs, and the detection of volatile substances can be influenced. The knocking mode is difficult to control due to the fact that knocking force is hard to control, the soil core falls irregularly, time and labor are wasted, the falling soil core is disordered, and accuracy of acquisition of geological information such as follow-up samples and soil layer distribution is affected.

The existing soil core sampling drill rod has great problems for taking out complete, undisturbed and (exogenous) polluted soil core samples later due to the defects of the design, so that the research and development of the drilling drill rod with convenience, high efficiency and no disturbance has great significance.

Accordingly, there is a need to provide a drill rod that solves at least the above-mentioned problems of the prior art.

Disclosure of Invention

To solve at least one of the above problems, according to an aspect of the present invention, a drill rod is presented, comprising one or more connecting rods; and a drilling rod connected with the one or more connecting rods, the drilling rod comprising a drilling cylinder arranged on the outer layer and a sampling cylinder arranged on the inner layer, the sampling cylinder comprising two or more cylinders which are combined into a whole through mutually matched convex bolts and grooves arranged on the cylinder body and a fixing nut, wherein the top of the fixing nut is provided with a lifting ring so as to separate the sampling cylinder from the drilling cylinder, thereby obtaining a complete and undisturbed drilling sample.

In one embodiment, the inner diameter of the shank of the one or more connecting rods is smaller than the outer diameter of the fixing nut, such that the drill rod, the drilling barrel, the sampling barrel and the fixing nut are uniformly stressed.

In one embodiment, the inner diameter of the connection of the one or more connecting rods is greater than or equal to the outer diameter of the screw of the drilling cartridge.

In one embodiment, the upper end screw of the drilling cylinder is convex, and the thickness of the screw is smaller than the thickness of the cylinder body of the drilling cylinder, so that the fixing nut is clamped on the upper part of the drilling rod and does not fall off.

In one embodiment, the lower end drilling probe of the drilling cylinder is in a positive and negative L shape, and the inner diameter of the lower end cylinder opening of the drilling cylinder is smaller than the inner diameter of the cylinder body, so that the sampling cylinder is clamped in the drilling cylinder and does not fall off.

In one embodiment, the outer diameter of the fixing nut is smaller than the inner diameter of the drilling cylinder, and the inner diameter of the fixing nut is greater than or equal to the outer diameter of the sampling cylinder, so that the sampling cylinder is clamped on the upper portion of the drilling cylinder without falling off.

In one embodiment, the number and length of the one or more connecting rods is adjusted based on drilling depth.

In one embodiment, the drilling mode of the drill rod is a spiral drilling mode or a direct push drilling mode.

In one embodiment, the shape of the stud and the recess includes one of a circle, an arch, a cylinder, a falcon.

The drill rod is convenient and efficient to use, and can take out complete drilling samples without disturbance and (exogenous) pollution.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing embodiments thereof in more detail with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, and not constitute a limitation to the invention. In the drawings, like reference numerals generally refer to like parts or steps.

FIG. 1 is a schematic view of a connecting rod according to an embodiment of the present invention;

fig. 2 (a) -2 (b) are schematic structural views of a drill rod according to an embodiment of the present invention, wherein fig. 2 (a) is a schematic structural view of a drilling cartridge, and fig. 2 (b) is a schematic structural view of a sampling cartridge;

FIG. 3 is a cross-sectional view of the cartridge shown in FIG. 2;

FIG. 4 is a schematic view of the structure of the connecting rod and the boring bar shown in FIGS. 1 and 2, respectively, when used in combination during soil boring sampling;

FIG. 5 is an enlarged schematic view of the bottom hole probe of FIG. 2 (a); and

fig. 6 is an enlarged schematic view of fig. 2 (b) at C.

Wherein, 1-connecting rod; 2-a drilling cartridge; 3-a sampling cylinder; 3A-A cylinder; 3B-B cylinder; 31-a male pin; 32-grooves; 4-fixing the screw cap; 41-a pull ring; 5-threading; 6-a drill bit; 61-ripping tooth.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present invention and not all embodiments of the present invention, and it should be understood that the present invention is not limited by the example embodiments described herein. Based on the embodiments of the invention described in the present application, all other embodiments that a person skilled in the art would have without inventive effort shall fall within the scope of the invention.

The existing soil core sampling drill rod has great problems for taking out complete, undisturbed and (exogenously) polluted soil core samples in the follow-up process due to the defects of the design. Therefore, the development and design of the drilling rod which is convenient, efficient and undisturbed have important significance.

The invention discloses a convenient, efficient and undisturbed drill rod which is designed aiming at the problems of the traditional soil core drilling drill rod.

The invention discloses a drill rod, which comprises a connecting rod and a drilling rod for drilling. The drilling rod consists of an outer drilling cylinder and an inner sampling cylinder. The sampling tube is composed of a tube A and a tube B which are combined into a whole through a convex bolt and a groove on the tube body and a fixing screw cap on the upper part. The top of the fixing nut is provided with a lifting ring so as to smoothly separate the sampling cylinder from the drilling cylinder, the fixing nut is unscrewed, and a A, B cylinder is separated to obtain a complete and undisturbed soil core sample. The drill rod provided by the invention is suitable for soil core sampling of the spiral drilling machine and sampling of the direct-pushing drilling machine, and has the characteristics of wide application range, simplicity in operation, no disturbance, high sampling efficiency and the like.

First, a basic structure of a drill rod according to an embodiment of the present invention will be described with reference to fig. 1 to 3.

As shown in fig. 1 to 3, a drill rod according to an embodiment of the present invention includes: one or more connecting rods; and a drilling rod connected with the one or more connecting rods, the drilling rod comprising a drilling cylinder arranged on the outer layer and a sampling cylinder arranged on the inner layer, the sampling cylinder comprising two or more cylinders which are combined into a whole through mutually matched convex bolts and grooves arranged on the cylinder body and a fixing nut, wherein the top of the fixing nut is provided with a lifting ring so as to separate the sampling cylinder from the drilling cylinder, thereby obtaining a complete and undisturbed drilling sample.

The drill rod comprises a connecting rod, a drilling cylinder, a sampling cylinder, a convex bolt, a groove, a fixing nut, a lifting ring, threads, a drill bit and tunneling teeth. The drilling machine presses the drilling rod into the ground through the connecting rod, in the process, soil enters the sampling cylinder and is lifted out of the ground along with the drilling rod, and the sampling cylinder is separated, so that the complete undisturbed soil without disturbance can be obtained.

In the present invention, the diameters of the connecting rod (shown in fig. 1), the drilling rod (shown in fig. 2 (a) and 2 (b)) and the like have various specifications, and can be selected according to sampling requirements, and the connecting rod and the drilling rod are connected through threads 5.

In some embodiments, the number and length of the one or more connecting rods is adjusted based on drilling depth. Specifically, in the invention, the number of the connecting rods can be selected according to the depth of drilling samples. Preferably, the length of each connecting rod is preferably 90-150 cm so as to adapt to most drilling machines in the market, expand the applicability of the invention and reduce the manufacturing and using cost of equipment.

In the present invention, the drilling rod is composed of a drilling cylinder 2 and a sampling cylinder 3, the sampling cylinder 3 is located inside the drilling cylinder 2, and preferably the diameter of the drilling cylinder 2 is 1 to 20mm larger than the sampling cylinder 3.

In some embodiments, the drilling mode of the drill rod is a screw drilling mode or a direct push drilling mode. Specifically, the drilling cartridge 2 (as in fig. 2 (a)) may be either a auger drill pipe or a direct push drill pipe. The bottom of the spiral drilling cylinder is connected with a drill bit 6 with tunneling teeth 61 through threads 5, and the cylinder wall at the outer side of the bottom of the straight pushing type drilling cylinder is narrowed, so that drilling is easier to push.

The sampling cylinder 3 (as shown in fig. 2 (B) and 3) is composed of two semicircular a cylinders 3A and B cylinders 3B. Although only two cartridges are shown here, the invention is not limited thereto and the number of cartridges contained therein and the length thereof may be designed according to actual needs.

The sampling tube A and the sampling tube B are fixedly combined into a complete sampling tube 3 through the combined action of the fixing screw cap 4 positioned at the upper part, the convex bolt and the groove positioned on the tube wall, the drilling tube outside the sampling tube and the like, so that the sampling tube is firm and stable in the drilling process, and is not easy to misplace, deform and the like due to the action of external force. Further, the sampling cartridge 3 is placed inside the drilling cartridge 2, further increasing its stability.

The drill rod provided by the invention comprises two structures from top to bottom: the upper part is a connecting rod 1, and the lower part is a drilling rod (consisting of a drilling cylinder 2, a sampling cylinder 3 and a fixing nut 4) which are connected and fixed through threads. The drill rod further comprises an outside-in structure: the lower part is a drilling rod and consists of an outer drilling cylinder 2 (supporting, fixing and soil shearing actions) and an inner sampling cylinder (consisting of a A, B cylinder and an upper fixing nut 4 for preserving samples).

The sampling cylinder is composed of the cylinder A and the cylinder B, and the soil core sampling is fast, efficient and disturbance-free through the separation of the drilling cylinder and the sampling cylinder and the separation of the sampling cylinder A and the sampling cylinder B, and the clear and complete soil core sample can be obtained. The undisturbed soil sample is directly pressed into the sampling tube through the hollow drill rod for the underground soil sample, and the soil sample is not contacted by the outside, so that the soil sample is undisturbed. The current common design is an external drilling cylinder and an internal plastic liner tube, but the diameter is too small, and the soil sampling amount is small; while the large bore drill pipe has substantially only an outer rod and no inner rod, the soil sample is difficult to separate from the drill pipe. It is typically squeezed out with water or compressed air, which can cause contamination of the soil sample. The drill rod provided by the invention is not limited by the diameter of the drill cylinder, and is particularly suitable for observing the scene of soil core structure and sampling detection with large diameter and large soil sampling amount.

In some embodiments, the shape of the stud and the groove includes one of a circle, an arch, a cylinder, a falcon. Specifically, the convex bolt and the groove on the sampling cylinder wall enable the sampling cylinder A and the sampling cylinder B to be firmly fastened in a mutually matched mode, and the shape of the sampling cylinder A and the sampling cylinder B can be in various modes such as a round shape, an arch shape, a column shape, a falcon shape and the like.

Next, the structure of the drill rod according to the embodiment of the present invention will be described in detail with reference to fig. 4 to 6.

In some embodiments, the inner diameter of the shank of the one or more connecting rods is smaller than the outer diameter of the fixing nut, such that the drill rod, the drilling barrel, the sampling barrel, and the fixing nut are uniformly stressed. Specifically, the bottom of the connecting rod is fixed with the drilling rod through threads, and the inner diameter of the connecting rod (except for a screw hole) is smaller than the outer diameter of the fixing nut, so that the drilling rod, the drilling cylinder, the sampling cylinder, the fixing nut and the like are uniformly stressed. The connecting rod can be used for connecting and fixing the drilling rod, and can uniformly stress all parts of the drilling rod, so that all parts of the drilling rod are protected, and the service life of the drilling rod is prolonged. In addition, the pressure of the upper drill rod is acted on/conducted to the lower drill barrel and the sampling barrel through the pull ring, and not conducted through the screw.

In some embodiments, the inner diameter of the connection of the one or more connecting rods is greater than or equal to the outer diameter of the screw of the drilling cartridge.

In some embodiments, the upper end screw of the drilling barrel is convex and the thickness of the screw is less than the thickness of the barrel of the drilling barrel, so that the fixing nut is clamped on the upper part of the drilling rod and does not fall off. Specifically, as shown in fig. 4, the screw hole at the upper end of the drilling cylinder is convex, and the thickness of the screw hole is smaller than that of the cylinder body, so that the fixing nut is clamped on the upper part of the drilling rod and does not fall off.

In some embodiments, the lower end drilling head of the drilling cylinder is in a positive and negative L shape, and the inner diameter of the lower end cylinder opening of the drilling cylinder is smaller than the inner diameter of the cylinder body, so that the sampling cylinder is clamped in the drilling cylinder and does not fall off. Specifically, as shown in fig. 5, the lower end drilling probe of the drilling cylinder is in a positive and negative L shape, and the inner diameter of the lower end cylinder opening is smaller than the inner diameter of the cylinder body, so that the sampling cylinder is clamped in the drilling cylinder and does not fall off.

In some embodiments, the outer diameter of the retaining nut is less than the inner diameter of the drilling barrel and the inner diameter of the retaining nut is greater than or equal to the outer diameter of the sampling barrel so that the sampling barrel snaps over the upper portion of the drilling barrel without falling off. Specifically, the fixing nut 4 is connected with the sampling tube 3 through a thread 5, the size of the fixing nut 4 is that the outer diameter of the fixing nut is slightly smaller than the inner diameter of the drilling tube, the inner diameter of the fixing nut is equal to the outer diameter of the sampling tube, and the sampling tube A and the sampling tube B are fixed through threads, so that the sampling tube is clamped at the upper part of the drilling tube and cannot fall off at will; the upper part of the drilling cylinder is provided with a lifting ring, the sampling cylinder and the drilling cylinder can be quickly separated under the action of external force, and the shape of the drilling cylinder can be square, round or elliptic.

Specifically, the outer diameter of the connecting rod 1 is the same as the outer diameter of the drilling cylinder 2, and the inner diameter of the connecting part of the connecting rod 1 is equal to (or slightly larger than 5 mm) the outer diameter of the screw of the drilling cylinder 2. The inner diameter of the rod body of the connecting rod 1 itself is smaller than the outer diameter of the fixing nut 4 (to fix the lower sampling rod again). The inside diameter of the screw of the drilling cylinder 2 is slightly larger (5 mm) than the outside diameter of the fixing nut 4, which is equal to (or slightly larger than 5 mm) the outside diameter of the sampling cylinder 3.

As shown in fig. 6, the walls of the A cylinder and the B cylinder are provided with semicircular convex bolts 31 and grooves 32 which are mutually matched, and a group of convex bolts and grooves are preferably distributed every 30-60 cm. Preferably the number of studs and recesses per set is 3 to 5. C is protruding bolt and recess, similar mortise and tenon structure, mainly plays the fixed effect for it is fixed with A, B section of thick bamboo, makes its combination become a complete drum, does not make its dislocation, increases stability. The semicircular concave-convex structure is adopted, so that the operation is mainly convenient, and the cleaning is convenient.

The lifting ring 41 is used for separating the sampling tube 3 from the interior of the drilling tube 2, the drilling machine hooks the lifting ring 41, and the separation of the drilling tube 2 and the sampling tube 3 is realized by utilizing the gravity of the drilling tube 2 or by means of a tool.

The procedure for taking the samples is as follows: the drilling machine presses the drilling rod 2 into the ground through the connecting rod 1, and the soil is filled with the sampling cylinder after reaching a specified depth. Further, the drilling machine lifts the drilling rod 2 to the ground through the connecting rod 1, and the separation of the drilling cylinder 2 and the sampling cylinder 3 is realized by using the lifting ring. Further, the separated sampling cylinder 3 is horizontally placed, the fixing screw cap 4 at the top is unscrewed, the sample is slightly lifted, and the cylinder A and the cylinder B are separated, so that a complete and undisturbed soil core sample can be obtained. Further, the type, color, structure, depth and other shapes of the soil layer are distinguished and recorded by experienced professional technicians, and the soil core is cut and sampled as required, and stored, transported and detected according to specifications.

The traditional soil core sampling drilling machine drill rod can realize no disturbance in the drilling process of the drilling machine, but after the drill rod is lifted out of the ground, attention on how to take out the soil core from the drill rod without disturbance is insufficient, so that the drilling machine is basically free from disturbance in the tunneling process, and the phenomenon of disturbance, pollution and even damage on the ground occurs. The drill rod related by the invention adopts a split structure, namely the research and development design is focused on the problem, the operation is simple, the labor intensity of workers is reduced, the overall construction efficiency is improved, the convenience, the high efficiency and the no disturbance of soil core sampling are realized, the drill rod is suitable for a spiral drilling machine and a direct-pushing drilling machine, the application range is wide, the equipment manufacturing and the use cost are low, and the drill rod is suitable for popularization and application in soil core drilling sampling.

For a better understanding of the present invention, specific embodiments of the present invention are described in detail and further illustrated below in conjunction with the examples and figures 1-6. The examples are only for explaining the present invention and do not constitute any limitation of the present invention.

Example 1

As shown in fig. 1 to 6, the present embodiment provides a drill rod suitable for a spiral driving type "30 drill", which comprises a connecting rod 1, a drilling cylinder 2, a sampling cylinder 3, a bolt 31, a groove 32, a fixing nut 4, a lifting ring 41, threads 5, a drill bit 6 and driving teeth 61.

In this embodiment, the sampling tube is composed of a tube a and a tube B, and two separated semicircular sampling tubes are fixed by a fixing nut 4, a convex bolt 31 and a groove 32 to form a whole. The convex bolts 31 and the concave grooves 32 are distributed on the wall of the joint of the cylinder A and the cylinder B, 3-5 are formed into 1 group, and a group which is mutually matched is distributed every 30-60 cm.

Further, the fixed sampling tube is put into the drilling tube 2 to form a drilling rod, and the diameter of the sampling tube is 2-10 mm smaller than that of the drilling tube, so that the sampling tube and the drilling tube can slide in and separate smoothly. As shown in fig. 4, the diameter of the fixing nut 4 of the present embodiment is larger than the diameter of the sampling tube and smaller than the diameter of the drilling tube, so that the sampling tube is ensured to be well fixed, and the sampling tube is prevented from shaking left and right or even sliding down in the drilling tube. The drill bit 6 is connected with the bottom of the drilling cylinder through threads, the drill bit can be replaced according to the requirement, the bottom of the drilling cylinder is in a positive and negative L shape (as shown in figure 5), and the inner diameter of the lower cylinder opening is smaller than the inner diameter of the cylinder body, so that the sampling cylinder is clamped in the drilling cylinder and does not fall.

Further, the assembled drilling rod is connected with the connecting rod 1 through threads, and the inner diameter of the connecting rod 1 is slightly smaller than the outer diameter of the fixing nut 4, so that the sampling tube is further fixed and stressed better.

Further, the drilling machine presses the drilling rod into the ground through the connecting rod 1, in the process of which the soil is packed up with the sampling cylinders, the number of the connecting rods 1 can be configured according to the drilling depth, in this embodiment, the drilling depth is 24m.

Further, the drilling machine drills to a certain depth, the drilling machine lifts the drilling rod filled with the soil core out of the ground through the connecting rod 1, hooks the lifting ring 41, and can separate the sampling cylinder 3 from the drilling cylinder 2 under the action of gravity of the drilling cylinder.

Further, the sampling cylinder 2 is horizontally placed, the fixing screw cap 4 at the top is unscrewed, and the sampling cylinder A and the sampling cylinder B are separated, so that complete undisturbed soil can be obtained.

Further, the type, color, structure, depth and other shapes of the soil layer are distinguished and recorded by experienced professional technicians, and the soil core is cut and sampled as required, and stored, transported and detected according to specifications.

Example 2

As shown in fig. 1-6, the present embodiment provides a drill rod suitable for a straight-pushing type Geoprobe 7782DT type drilling machine, which comprises a connecting rod 1, a drilling cylinder 2, a sampling cylinder 3, a convex bolt 31, a groove 32, a fixing nut 4, a lifting ring 41 and threads 5.

In this embodiment, the cartridge is composed of two parts, a cartridge a and a cartridge B. The two separated semicircular sampling cylinders are fixed through the fixing screw cap 4, the convex bolt 31 and the groove 32 to form a whole, the convex bolt 31 and the groove 32 are distributed on the cylinder wall of the joint of the cylinder A and the cylinder B, 3-5 cylinders form 1 group, and a group which is mutually matched is distributed every 30-60 cm.

Further, the fixed sampling tube is put into the drilling tube 2 to form a drilling rod, and the diameter of the sampling tube is 2-10 mm smaller than that of the drilling tube, so that the sampling tube and the drilling tube can slide in and separate smoothly. As shown in fig. 4, the diameter of the fixing nut 4 of the present embodiment is larger than the diameter of the sampling tube and smaller than the diameter of the drilling tube, so that the sampling tube is ensured to be well fixed, and the sampling tube is prevented from shaking left and right or even sliding down in the drilling tube. The outer cylinder wall at the bottom of the drilling cylinder 2 (as shown in fig. 5) is narrowed to make the drilling easier to advance; the inner side of the bottom of the drilling cylinder is in a positive and negative L shape, and the inner diameter of the cylinder opening at the lower end is smaller than the inner diameter of the cylinder body, so that the sampling cylinder is clamped in the drilling cylinder and does not fall off.

Further, the drilling machine presses the drilling rod into the ground through the connecting rod 1, in the process of which the soil is packed up with the sampling cylinders, the number of the connecting rods 1 can be configured according to the drilling depth, which is 16.5m in this embodiment.

The invention provides a drill rod, which can be used for sampling a soil core. The drill rod includes a connecting rod, and a drill rod for drilling, the number and length of which can be adjusted according to the depth of drilling. The drilling rod consists of an outer layer drilling cylinder and an inner layer sampling cylinder, wherein the drilling cylinder can be in an spiral drilling mode or a direct pushing drilling mode. The sampling tube can be composed of a tube A and a tube B which are combined into a whole through a convex bolt and a groove on the tube body and a fixing screw cap on the upper part. The top of the fixed screw cap is provided with a lifting ring so as to smoothly separate the sampling cylinder from the drilling cylinder, and the fixed screw cap is unscrewed to separate A, B cylinders, so that a complete and undisturbed soil core sample can be obtained. The invention is not only suitable for soil core sampling of the spiral drilling machine, but also suitable for sampling of the direct-pushing drilling machine, and has the characteristics of wide application range, simplicity in operation, no disturbance, high sampling efficiency and the like.

Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the above illustrative embodiments are merely illustrative and are not intended to limit the scope of the present invention thereto. Various changes and modifications may be made therein by one of ordinary skill in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the present invention as set forth in the appended claims.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in order to streamline the invention and aid in understanding one or more of the various inventive aspects, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof in the description of exemplary embodiments of the invention. However, the method of the present invention should not be construed as reflecting the following intent: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be combined in any combination, except combinations where the features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

The foregoing description is merely illustrative of specific embodiments of the present invention and the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present invention. The protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A drill rod, comprising:

one or more connecting rods; and

the drilling rod is connected with the one or more connecting rods, the drilling rod comprises a drilling cylinder arranged on the outer layer and a sampling cylinder arranged on the inner layer, the circumference of the sampling cylinder comprises two or more cylinders, the two or more cylinders are combined into a whole through mutually matched convex bolts and grooves arranged on the side part of the cylinder body and a fixed screw cap, wherein the top of the fixed screw cap is provided with a lifting ring so as to separate the sampling cylinder from the drilling cylinder, and thus a complete and undisturbed drilling sample is obtained; the bottom of the connecting rod is fixed with the drilling rod through threads, and the inner diameter of the rod body of the one or more connecting rods is smaller than the outer diameter of the fixing nut, so that the drilling rod, the drilling cylinder, the sampling cylinder and the fixing nut are uniformly stressed; the upper end screw of the drilling cylinder is convex, and the inner diameter of the upper end screw of the drilling cylinder is larger than the inner diameter of the cylinder body of the drilling cylinder; the lower end drilling probe of the drilling cylinder is in a positive and negative L shape, and the inner diameter of the lower end cylinder opening of the drilling cylinder is smaller than the inner diameter of the cylinder body; the external diameter of the fixed nut is smaller than the internal diameter of the screw hole at the upper end of the drilling cylinder and is larger than the internal diameter of the drilling cylinder body, and the external diameter of the fixed nut is larger than the external diameter of the sampling cylinder, so that the sampling cylinder is clamped at the upper part of the drilling cylinder and does not fall.

2. The drill rod of claim 1, wherein an inner diameter of the connection of the one or more connection rods is greater than or equal to an outer diameter of the drilling bore of the drilling cartridge.

3. The drill pipe of claim 1, wherein the number and length of the one or more connecting rods is adjusted based on drilling depth.

4. The drill rod of claim 1, wherein the drill rod is threaded in a screw or a straight push.

5. The drill rod of claim 1, wherein the shape of the stud and the recess comprises one of a circle, an arch, a cylinder, and a falcon.