Drilling sampling device for geotechnical engineering investigation

Abstract

The utility model discloses a drilling sampling device for geotechnical engineering investigation, which comprises a mounting seat, a driving shaft is fixedly connected to the center of the mounting seat, a speed change mechanism is arranged on the outer side wall of the driving shaft, the speed change mechanism comprises a pinion fixedly connected with the driving shaft, a big gear is connected to the inner top of the mounting seat through a bearing, and the big gear is meshed with the pinion. An inner gear ring is rotatably connected to the inner wall of the mounting seat in an embedded manner, a pressure sensing module is fixedly connected to the outer side wall of the driving shaft, a drilling barrel is arranged at the bottom of the mounting seat, a drill bit is fixedly connected to the bottom of the drilling barrel, a sampling barrel is fixedly connected to the bottom of the inner gear ring, and a through hole is formed in the bottom of the sampling barrel. According to the utility model, the mounting seat, the speed change mechanism, the drilling barrel and the sampling barrel are matched with one another, and the sampling barrel rotates in the drilling barrel, so that the through hole and the feeding hole are periodically overlapped, and therefore, periodic soil sampling in the drilling process is realized, and soil samples with different depths can be conveniently extracted.

Description

TECHNICAL FIELD

[0001] The utility model relates to drilling sampling equipment technical field, concretely is a kind of drilling sampling device for geotechnical engineering investigation. BACKGROUND

[0002] Geotechnical engineering is a branch of civil engineering, which specializes in studying the physical properties of soil and rock and their application in engineering structures. It deals with issues such as foundation and base, slope and underground engineering, including various environmental geotechnical engineering problems during the development and utilization of underground space such as foundation pits and tunnels. During geotechnical engineering investigation, soil sampling investigation is often required.

[0003] The existing drilling sampling device has limited sampling depth during drilling and sampling. When a certain depth is reached, the sampling device will be full, and the soil sample needs to be removed for further sampling. This cannot achieve multiple soil sampling in a single drilling, resulting in low work efficiency.

[0004] Therefore, we propose to design a drilling sampling device for geotechnical engineering investigation. SUMMARY

[0005] This section aims to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present utility model.

[0006] To solve the above technical problems, according to one aspect of the present utility model, the present utility model provides the following technical scheme:

[0007] A drilling sampling device for geotechnical engineering investigation, comprising a mounting seat, the mounting seat is fixedly connected with a drive shaft at the center, the outer side wall of the drive shaft is provided with a speed change mechanism;

[0008] The speed change mechanism comprises a pinion fixedly connected with the drive shaft, a large gear is connected with the inner top bearing of the mounting seat, and an internal gear ring is rotatably connected with the inner wall of the mounting seat;

[0009] The outer side wall of the drive shaft is fixedly connected with a pressure sensing module, the mounting seat is provided with a drill cylinder at the bottom, the drill cylinder is fixedly connected with a drill bit at the bottom, the internal gear ring is fixedly connected with a sampling cylinder at the bottom, and a through hole is formed in the bottom of the sampling cylinder.

[0010] As a preferred rock engineering investigation drilling sampling device of the utility model, wherein, the bottom of the mounting seat and the top of the drilling cylinder are fixed by bolts on the circumferential side, which facilitates the separation of the mounting seat and the drilling cylinder, and the extraction of the soil sample in the sampling cylinder.

[0011] As a preferred rock engineering investigation drilling sampling device of the utility model, wherein, the outer wall of the sampling cylinder is smoothly attached to the inner wall of the drilling cylinder, so that the sampling cylinder can rotate flexibly in the drilling cylinder.

[0012] As a preferred rock engineering investigation drilling sampling device of the utility model, wherein, the outer wall of the drilling head is provided with a feeding port, the through hole is provided with a plurality of holes, and the plurality of holes are evenly distributed in the circumferential side of the bottom of the sampling cylinder in the form of a ring. The position of the feeding port corresponds to the through hole. When the feeding port and the through hole coincide, the soil sample in the soil layer can enter the sampling cylinder.

[0013] As a preferred rock engineering investigation drilling sampling device of the utility model, wherein, the pinion and the gear wheel are connected in meshing correspondence, the gear wheel is connected in meshing correspondence with the internal gear ring, and through the meshing of the gear, the soil can be taken at intervals during the drilling process of the drilling head, so that the soil sample of different depth levels can be collected in the sampling cylinder.

[0014] As a preferred rock engineering investigation drilling sampling device of the utility model, wherein, the sampling cylinder comprises an upper cylinder and a lower cylinder, and the upper cylinder and the lower cylinder are connected in correspondence through an annular tooth. When the sampling cylinder is taken out, the sampling cylinder can be disassembled, and the soil sample in the interior can be taken out.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model cooperates between the mounting seat, the speed change mechanism, the drilling cylinder and the sampling cylinder, rotates the sampling cylinder in the drilling cylinder, periodically coincides the through hole with the feeding port, so that the soil can be taken periodically in the drilling process, and the soil sample of different depth can be extracted. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the utility model will be described in detail below in combination with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0018] Fig. 1 It is a structural schematic view of the utility model rock engineering investigation drilling sampling device.

[0019] Fig. 2 It is a schematic view of the speed change mechanism structure of the drilling sampling device for geotechnical engineering investigation of the utility model.

[0020] Fig. 3 It is a schematic view of the sampling cylinder structure of the drilling sampling device for geotechnical engineering investigation of the utility model.

[0021] Legend: 1, mounting seat; 2, drive shaft; 3, speed change mechanism; 301, pinion; 302, gear; 303, inner gear ring; 4, pressure sensing module; 5, drill cylinder; 6, drill bit; 601, feed inlet; 7, sampling cylinder; 8, through hole. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0023] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0024] Secondly, the utility model is described in detail in combination with the schematic view, and in the detailed description of the utility model embodiments, for the convenience of description, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic view is only an example, which should not limit the scope of protection of the utility model herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be further described in detail below with reference to the drawings.

[0026] Please refer to Figs. 1-3 The utility model provides a kind of drilling sampling device for geotechnical engineering investigation, including mounting seat 1, mounting seat 1 center place is fixedly connected with drive shaft 2, drive shaft 2 outer side wall is provided with speed change mechanism 3.

[0027] Speed change mechanism 3 includes the pinion 301 of being fixedly connected with drive shaft 2, the top bearing of mounting seat 1 is connected with gear 302, and the inner wall of mounting seat 1 is embedded and rotationally connected with inner gear ring 303.

[0028] The pinion gear 301 and the gear wheel 302 are in meshing connection, the gear wheel 302 is in meshing connection with the internal gear ring 303, through the gear meshing, the drilling process of the drill bit 6 can be realized, the soil is taken at intervals, so that the soil samples of different depth levels are collected in the sampling cylinder 7.

[0029] The driving shaft 2 is fixedly connected with the pressure sensing module 4, the drilling cylinder 5 is arranged at the bottom of the mounting seat 1, the drill bit 6 is fixedly connected at the bottom of the drilling cylinder 5, and the sampling cylinder 7 is fixedly connected at the bottom of the internal gear ring 303, wherein the outer side wall of the sampling cylinder 7 is smoothly attached to the inner wall of the drilling cylinder 5, so that the sampling cylinder 7 can rotate flexibly in the drilling cylinder 5. The through hole 8 is arranged at the bottom of the sampling cylinder 7.

[0030] In the embodiment, the bottom of the mounting seat 1 and the top of the drilling cylinder 5 are fixed by bolts, which facilitates the separation of the mounting seat 1 and the drilling cylinder 5, and the extraction of the soil sample in the sampling cylinder 7.

[0031] In the embodiment, the outer side wall of the drill bit 6 is provided with an inlet 601, and the through hole 8 is arranged at the bottom of the sampling cylinder 7, and the inlet 601 and the through hole 8 are in corresponding position.

[0032] In the embodiment, the sampling cylinder 7 comprises an upper cylinder and a lower cylinder, and the upper cylinder and the lower cylinder are connected by an annular tooth, so that the sampling cylinder 7 can be disassembled when it is taken out, and the internal soil sample can be taken out.

[0033] In use, the driving shaft 2 is connected with the external driving mechanism, which facilitates the rotation of the driving shaft 2, so as to drive the drilling cylinder 5 and the drill bit 6 to drill into the ground.

[0034] During the rotation of the drill bit 6, the driving shaft 2 can also drive the pinion gear 301 to rotate, and through the meshing relationship, the gear wheel 302 is driven to rotate, and then the internal gear ring 303 is driven to rotate, and finally the sampling cylinder 7 is driven to rotate, when the through hole 8 at the bottom of the sampling cylinder 7 and the inlet 601 coincide, the soil in the soil layer can enter the sampling cylinder 7 for collection.

[0035] Since the through hole 8 and the inlet 601 are periodically coincided, the soil samples of different depth levels can be collected during the drilling process, when the soil sample in the sampling cylinder 7 is full, the soil contacts with the pressure sensing module 4, and as the drilling depth is deeper, the pressure gradually increases, when the pressure increases to the threshold value of the pressure sensing module 4, the staff can be prompted to take out the drilling cylinder 5 for soil taking.

[0036] The pressure sensing module 4 in the device is a wireless pressure sensor, which uses high-precision and high-stability diffusion silicon as a pressure sensing chip, and transmits data through GPRS wireless network, which is the prior art and will not be described here.

[0037] Although the utility model has been described above with reference to the embodiments, various modifications can be made to it and equivalent components can be substituted for those therein without departing from the scope of the utility model. In particular, each of the features disclosed in the embodiments of the utility model can be used in combination with any other feature in any way, provided that there is no structural conflict. The combinations of these features are not exhaustively described in the specification merely for the sake of brevity and resource conservation. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drilling and sampling device for geotechnical investigations, comprising a mounting seat (1), characterized in that, The driving shaft (2) is fixedly connected at the center of the mounting seat (1), and a speed change mechanism (3) is arranged on the outer wall of the driving shaft (2); The speed change mechanism (3) comprises a pinion (301) fixedly connected with the driving shaft (2), a large gear (302) is connected with the inner top bearing of the mounting seat (1), and an inner gear ring (303) is rotatably connected in the inner wall of the mounting seat (1); The outer wall of the driving shaft (2) is fixedly connected with a pressure sensing module (4), the bottom of the mounting seat (1) is provided with a drill cylinder (5), the bottom of the drill cylinder (5) is fixedly connected with a drill bit (6), the bottom of the inner gear ring (303) is fixedly connected with a sampling cylinder (7), and the bottom of the sampling cylinder (7) is provided with a through hole (8).

2. The drilling and sampling device for geotechnical engineering investigation according to claim 1, characterized in that, The bottom of the mounting seat (1) and the top of the drill cylinder (5) are fixed by bolts.

3. The drilling and sampling device for geotechnical engineering investigation according to claim 1, characterized in that, The outer wall of the sampling cylinder (7) is smoothly attached to the inner wall of the drill cylinder (5).

4. The drilling and sampling device for geotechnical engineering investigation according to claim 1, characterized in that, The outer wall of the drill bit (6) is provided with a feed inlet (601), a plurality of through holes (8) are arranged, the plurality of through holes (8) are evenly distributed on the bottom of the sampling cylinder (7), and the feed inlet (601) corresponds to the position of the through hole (8).

5. The drilling and sampling device for geotechnical engineering investigation according to claim 1, characterized in that, The pinion (301) and the large gear (302) are correspondingly engaged, and the large gear (302) is engaged with the inner gear ring (303).

6. The drilling and sampling device for geotechnical engineering investigation according to claim 1, characterized in that, The sampling cylinder (7) comprises an upper cylinder and a lower cylinder, and the upper cylinder and the lower cylinder are correspondingly inserted through the annular teeth.

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