Deep sampling drill bit for hard soil detection

Abstract

The utility model discloses a deep sampling drill bit for hard soil detection, which comprises a connector, a transmission rod, a drill cylinder and a sleeve, the connector is connected to the top end of the drill cylinder through the transmission rod, and a plurality of scraping teeth are arranged on the peripheral wall of the bottom of the drill cylinder; the sleeve penetrates into the drill cylinder from the bottom end of the drill cylinder, a locking mechanism capable of being unlocked externally is arranged between the sleeve and the drill cylinder, so that the sleeve is fixed into the drill cylinder and taken out of the drill cylinder, and the sleeve is vertically divided into two independent halves through the symmetry plane of the sleeve. According to the utility model, the sleeve is also arranged in the drill cylinder, the sampled samples are all positioned in the sleeve, the drill cylinder is horizontally placed after sampling, the locking mechanism is opened, the sleeve is horizontally taken out, and the sleeve is separated, so that the finished soil sample can be obtained, and the sleeve is divided into two independent halves, so that no matter how high the hardness and the viscosity of the internal soil are, the soil sample can be obtained. And the sample can be taken out under the condition that the structure of the sample is not damaged.

Description

Technical Field

[0001] The utility model relates to a drill bit, in particular to a deep sampling drill bit used for hard soil detection. Background Art

[0002] When conducting deep sampling tests on hard soil, it is difficult to remove the sample from the drill tube after sampling because the hard soil is stuck tightly in the drill tube or has high viscosity. Some drill tubes can be poked from the top down with a rod, but this will destroy the internal sample distribution state, causing samples from different layers to mix together. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a deep sampling drill bit for hard soil detection to solve the technical problem in the above background.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A deep sampling drill bit for hard soil detection comprises a connector, a transmission rod, a drill barrel and a sleeve, wherein the connector is connected to the top of the drill barrel through the transmission rod, and a plurality of scraping teeth are arranged on the bottom peripheral wall of the drill barrel; the sleeve is inserted into the sleeve from the bottom end of the drill barrel, and a locking mechanism that can be unlocked from the outside is provided between the sleeve and the drill barrel, so as to fix the sleeve inside the drill barrel and take the sleeve out from the inside of the drill barrel, and the sleeve is vertically divided into two independent halves by its symmetry plane.

[0006] Furthermore, a slot is provided at the top of the inner side of the drill tube, and a plug is connected to the corresponding slot at the top end of the sleeve. A key slot is transversely penetrated through the plug and the slot, and a connecting key is inserted into the key slot for fixing.

[0007] Furthermore, the slot and the plug are both regular hexagons, and the keyway passes through two symmetrical edges.

[0008] Furthermore, a thickened section is provided between the top end of the drill tube and the transmission rod, and the slot is provided inside the thickened section.

[0009] Furthermore, an inclined groove is provided on the inner wall of the bottom of the sleeve.

[0010] Advantages of the utility model:

[0011] In the utility model, since a sleeve is further arranged in the drill tube, the collected samples are all located in the sleeve. After sampling, the drill tube is placed horizontally, the locking mechanism is opened, and after the sleeve is taken out horizontally, the sleeve is separated to obtain a completed soil sample. Since the sleeve is composed of two independent halves, no matter how hard the soil inside is or how viscous it is, the halves can be easily separated and the sample can be taken out without damaging the sample structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is a cross-sectional view of the utility model;

[0014] Figure 3 for Figure 2 A schematic diagram of the enlarged part A in FIG.

[0015] Figure 4 It is a schematic diagram of the sleeve assembly state;

[0016] Figure 5 This is a schematic diagram of the sleeve separated state.

[0017] In the figure, 1-connector, 2-transmission rod, 3-thickening section, 31-slot, 4-drill barrel, 41-scraping teeth, 5-sleeve, 51-groove, 52-plug, 6-connecting key, 61-keyway. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] As shown in the figure:

[0020] A deep sampling drill bit for hard soil detection comprises a connector 1, a transmission rod 2, a drill barrel 4 and a sleeve 5. The connector 1 is connected to the top of the drill barrel 4 through the transmission rod 2. A plurality of scraping teeth 41 are arranged on the bottom peripheral wall of the drill barrel 4. The sleeve 5 is inserted into the sleeve 5 from the bottom end of the drill barrel 4. A locking mechanism that can be unlocked externally is provided between the sleeve 5 and the drill barrel 4, so that the sleeve 5 is fixed inside the drill barrel 4 and the sleeve 5 is taken out from the inside of the drill barrel 4. The sleeve 5 is vertically divided into two independent halves by its symmetry plane.

[0021] Working principle: insert the top of the connector 1 into the shaft sleeve of the drill (existing technology for drilling rigs), then aim at the ground and drill downward. After drilling is completed, remove the drill. At this time, the samples taken are all located in the sleeve 5. Place the drill tube 4 horizontally, open the locking mechanism, and after taking out the sleeve 5 horizontally, separate the sleeve 5 to obtain the completed soil sample. Since the sleeve 5 is composed of two independent halves, no matter how hard the soil inside is or how viscous it is, it can be easily separated and the sample can be taken out without damaging the sample structure.

[0022] As an optimized solution, there is a slot on the top inner side of the drill barrel, and a plug 52 is connected to the corresponding slot at the top end of the sleeve 5. A key slot 61 is provided transversely through the plug 52 and the slot, and a connecting key 6 is inserted into the key slot 61 for fixation. In this way, torque can be transmitted between the slot and the plug 52, reducing the burden on the connecting key 6. It is best that the slot and the plug 52 are both regular hexagons, and the key slot 61 passes through two symmetrical edges.

[0023] On the basis of the above, a thickened section 3 is provided between the top of the drill tube and the transmission rod 2, and a slot is provided inside the thickened section 3, so as to avoid the surrounding wall from being broken under torque and to improve the strength by increasing the thickness.

[0024] In order to facilitate the entry of the soil sample at the bottom, an inclined groove 51 may be provided on the inner wall of the bottom of the sleeve 5 .

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A deep sampling drill bit for hard soil detection, characterized in that: It includes a connecting head, a transmission rod, a drill barrel and a sleeve. The connecting head is connected to the top of the drill barrel through the transmission rod. A plurality of scraping teeth are arranged on the bottom peripheral wall of the drill barrel. The sleeve is inserted into the sleeve from the bottom end of the drill barrel. A locking mechanism that can be unlocked from the outside is provided between the sleeve and the drill barrel, so as to fix the sleeve inside the drill barrel and take the sleeve out from the inside of the drill barrel. The sleeve is vertically divided into two independent halves by its symmetry plane, close to the top.

2. The deep sampling drill bit for hard soil detection according to claim 1, characterized in that: The top of the inner side of the drill tube is provided with a slot, and a plug is connected to the corresponding slot at the top end of the sleeve. A key slot is horizontally penetrated through the plug and the slot, and a connecting key is inserted into the key slot for fixing.

3. The deep sampling drill bit for hard soil detection according to claim 2, characterized in that: The slot and the plug are both regular hexagons, and the keyway passes through two symmetrical edges.

4. The deep sampling drill bit for hard soil detection according to claim 2, characterized in that: A thickened section is arranged between the top end of the drill tube and the transmission rod, and a slot is arranged inside the thickened section.

5. The deep sampling drill bit for hard soil detection according to claim 2, characterized in that: The inner wall of the sleeve bottom is provided with an inclined groove.

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