CN215115277U

CN215115277U - Soil sampler for detecting soil compaction degree

Info

Publication number: CN215115277U
Application number: CN202121368338.4U
Authority: CN
Inventors: 赵鑫雨; 何宝瑞; 张冉; 周嘉欣; 许焦飞; 宋高宇
Original assignee: Henan Zhengcheng Engineering Testing Co ltd
Current assignee: Henan Zhengcheng Engineering Testing Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-10
Anticipated expiration: 2031-06-18

Abstract

The utility model relates to a compactness detects technical field for geodetic soil sampler that geotechnique compactness detected, including the sampler barrel, the sampler barrel lower extreme is provided with the sawtooth, the upper end of going the sampler barrel rotationally is connected with the ratchet, the pawl is installed to the sampler barrel upper end, the ratchet is kept away from the one end fixedly connected with bull stick of sampler barrel. Through the setting of sawtooth and ratchet pawl mechanism, make the sampling tube through rotating the sample of accomplishing downwards, compare in preventing of hammering, reduced the vibrations of sample in the sampling tube to the result that makes follow-up experiment is more accurate.

Description

Soil sampler for detecting soil compaction degree

Technical Field

The application relates to the technical field of compaction degree detection, in particular to a geotome for detecting the compaction degree of a soil engineering.

Background

The compactness is one of key indexes for detecting the construction quality of the roadbed and the pavement, the compactness condition after on-site compaction is represented, and the higher the compactness is, the higher the density is, and the better the overall performance of the material is. In the process of measuring the compactness, soil needs to be sampled, and the sampling method mainly comprises a manual soil sampler and an electric soil sampler. A commonly used manual soil sampler in engineering is a cutting ring soil sampler.

In the chinese utility model patent with publication number CN211113577U, a soil sampler for measuring compaction degree of fine-grained soil roadbed is disclosed, comprising a sample cylinder, a foot shoe, a support frame, a support ring, a loading block and a roller; the foot shoe is of an annular structure matched with the section size of the sample cylinder, the top end of the foot shoe is supported at the bottom end of the sample cylinder, and the bottom end of the foot shoe is a blade end; the support frame comprises two vertical rods symmetrically arranged at the top end of the sample cylinder and a cross rod connected with the top ends of the two vertical rods; the support ring is an annular structure matched with the section size of the sample cylinder and is arranged on the two vertical rods in a sliding and penetrating mode; the loading block is slidably arranged on the two vertical rods in a penetrating way and is positioned above the support ring; the cylinder is located the top of loading piece, and the center pin rotates and installs on two montants, and the barrel is fixed on the center pin, and the winding has the connection rope on the barrel, connects the rope and is connected with the loading piece.

Above-mentioned utility model in pound the sampling point into with experimental section of thick bamboo through the mode of loading piece free fall hammering test bucket and take a sample. The sample in the test tube vibrates in the hammering process, and the vibration can influence the compactness of the sample in the test tube, so that the subsequent detection of the compactness is influenced.

Disclosure of Invention

To the not enough of prior art existence, the purpose of this application is to provide a geotome that is used for geotechnological compactness to the vibrations of sample when can reduce to remove the sample and detect.

The above application purpose of the present application is achieved by the following technical solutions:

a geotome for geotechnique's compactness detects, including the sampler barrel, the sampler barrel lower extreme is provided with the sawtooth, the upper end of sampler barrel rotationally is connected with the ratchet, the pawl is installed to the sampler barrel upper end, the ratchet is kept away from the one end fixedly connected with bull stick of sampler barrel.

Through adopting above-mentioned technical scheme, when needs are sampled, place the sawtooth of sampler barrel lower extreme at the sampling point, rotate the bull stick, the bull stick drives the ratchet rotatory, the ratchet passes through the pawl and drives the sampler barrel rotatory, after rotating certain angle, resets to the bull stick, then it is rotatory once more to make the sawtooth under the sampler barrel rotatory, become decurrent pressure through human dead weight counter shaft pole when rotating the bull stick, make the sampler barrel rotatory downwards, accomplish the sample. Through the setting of sawtooth and ratchet pawl mechanism, make the sampling tube through rotating the sample of accomplishing downwards, compare in preventing of hammering, reduced the vibrations of sample in the sampling tube to the result that makes follow-up experiment is more accurate.

Optionally, the outer side of the sampling tube is detachably connected with a sleeve, the saw teeth are fixedly connected to the lower end face of the sleeve, the pawl is hinged to the upper end face of the sleeve, and the ratchet wheel is rotatably connected to the upper end face of the sleeve.

By adopting the technical scheme, the ratchet wheel and the pawl drive the sleeve to rotate, and the sleeve drives the sampling cylinder nested in the sleeve to sample. Need weigh the analysis to the test in sampler barrel and the sampler barrel in the subsequent experiment step, sampler barrel detachably installs in the sleeve, take off the sampler barrel when subsequent experiment goes on weigh alone can, make the staff operation more convenient.

Optionally, the lower end of the sampling tube is provided with a conical surface inclined towards the inner side.

Through adopting above-mentioned technical scheme, set up the lower terminal surface of sampler barrel into the conical surface, make the sampler barrel lower extreme be sharp sword form, it is easier when making the sampler barrel surely advance the sampling point.

Optionally, a stripper plate is slidably mounted in the sleeve, the sampling cylinder is mounted on the lower end face of the stripper plate, a push rod is fixedly connected to the upper end face of the stripper plate, and the push rod penetrates through the upper end face of the sleeve.

Through adopting above-mentioned technical scheme, after the sample is accomplished, promote the push rod, the push rod promotes the stripper, and the stripper promotes the sampler barrel, releases the sleeve with the sampler barrel.

Optionally, the outer side wall of the sampling tube is attached to the inner side wall of the sleeve.

Through adopting above-mentioned technical scheme, reduce the clearance between sampling tube and the sleeve to reduce the sample that probably enters into in this clearance, reduce the condition of taking off the sampling tube because the sample blocks to be difficult to after the sample.

Optionally, a sealing cover is installed at the upper end of the sleeve, the ratchet wheel and the pawl are located in the sealing cover, and the rotating rod penetrates out of the sealing cover.

Through adopting above-mentioned technical scheme, make the ratchet pawl be in comparatively confined state. Because the operational environment of sample is mostly the muddy soil, reduces the influence of silt to the ratchet pawl operation through sealing the ratchet pawl, increases the life of ratchet pawl.

Optionally, the upper end surface of the sleeve is provided with a vent hole, and the vent hole penetrates through the sealing cover and the discharging plate simultaneously.

Through adopting above-mentioned technical scheme, when the sleeve drove the sampler barrel down sample, the sleeve down rotatory when and form a confined space of gradual compression between the sampling point. Through setting up the air vent, make the air in the enclosure space can discharge, reduce the resistance when downwards sampling.

Optionally, a cylindrical handle is mounted at the upper end of the rotating rod, the axis of the handle is perpendicular to the axis of the rotating rod, and the two ends of the handle are symmetrical about the central axis of the rotating rod.

Through adopting above-mentioned technical scheme, rotate through the handle when rotating the bull stick, exert decurrent pressure through the handle simultaneously, be convenient for rotate and the operation of pushing down.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the saw teeth and the ratchet wheel and pawl mechanism, the vibration of the sample in the sampling cylinder during sampling is reduced, so that the result of a subsequent experiment is more accurate;

2. the sampling cylinder is detachably connected with the sleeve, so that the sampling cylinder is independent of other mechanisms, and subsequent weighing operation is facilitated;

3. the stripper plate is arranged in the sleeve, so that the sampling cylinder can be taken out conveniently.

Drawings

FIG. 1 is a schematic diagram of a sampling tube section of an embodiment of a geotome for geotechnical compaction testing according to the present application;

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the soil sampler for soil compaction detection according to the present application;

fig. 3 is a schematic structural diagram of a ratchet of an embodiment of the soil sampler for soil compaction detection according to the present application.

Reference numerals: 1. a sampling tube;

2. a ratchet wheel; 21. a rotating rod 22 and a connecting column; 23. a bearing; 24. a handle;

3. a pawl; 31. a support plate; 32. a spring;

4. a sleeve; 41. saw teeth;

5. a stripper plate; 51. a push rod; 52. a gasket;

6. and (7) sealing the cover.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Referring to fig. 1, fig. 2, for the soil sampler for geotechnical compaction degree detects that this application discloses, including sampler barrel 1, sampler barrel 1 is the pipe form, and 1 lower extreme of sampler barrel is provided with sawtooth 41, and 1 upper end of sampler barrel rotationally is connected with ratchet 2, and pawl 3 is installed to the upper end of sampler barrel 1, and ratchet 2's upper end fixedly connected with bull stick 21 is convenient for bull stick 21 to rotate, and the welding of bull stick 21 upper end has handle 24. When needing to take a sample, place the sawtooth 41 of sampling tube 1 lower extreme at the sampling point, rotate bull stick 21 through handle 24, exert decurrent pressure to handle 24 simultaneously, bull stick 21 drives the ratchet 2 rotatory, and ratchet 2 drives the sampling tube 1 through pawl 3 and rotates, rotates certain angle after, resets bull stick 21, then rotates once more to make the sawtooth 41 under the sampling tube 1 rotatory, make the sampling tube 1 rotatory downwards, accomplish the sample. Through the setting of sawtooth 41 and ratchet 2 pawl 3 mechanism, make sampler barrel 1 through rotating the sample of accomplishing downwards, compare in preventing of hammering, reduced the vibrations of sample in the sampler barrel 1 to the result that makes follow-up experiment is more accurate.

In order to facilitate the weighing operation in the subsequent experimental steps of the sampling tube 1, a sleeve 4 is installed on the outer side of the sampling tube 1, the sleeve 4 is cylindrical with an opening at the lower end, and the sampling tube 1 is detachably installed in the sleeve 4 through the opening at the lower end of the sleeve 4. In order to reduce the situation that the sampling tube 1 is difficult to take down due to the sample blocking between the sampling tube 1 and the sleeve 4 after sampling, the outer side wall of the sampling tube 1 is attached to the inner side wall of the sleeve 4. The saw teeth 41 are fixedly connected to the lower end surface of the sleeve 4, and the sleeve 4 and the saw teeth 41 are integrated. For being convenient for sampler barrel 1 to take a sample downwards, 1 lower extreme of sampler barrel sets up to the conical surface of the outside inside wall slope of 1 lateral wall of sampler barrel, makes 1 lower extreme of sampler barrel be sharp sword form, and it is easier when making sampler barrel 1 surely advance the sampling point.

Referring to fig. 2 and 3, a tubular column connecting column 22 coaxial with the sleeve 4 is welded on the upper end surface of the sleeve 4, a bearing 23 is fixedly connected to the outer side of the connecting column 22, the bearing 23 is nested with the outer side of the connecting column 22, a through hole penetrating through the ratchet 2 is formed in the end surface of the ratchet 2, and the ratchet 2 is nested with the outer side of the bearing 23 through the through hole. The connecting column 22 and the bearing 23 and the ratchet wheel 2 are fixed through interference fit. Pawl 3 is articulated with sleeve 4's up end, and sleeve 4 up end welding has the connecting axle, and pawl 3 keeps away from the one end of ratchet 2 and has seted up the through-hole, and pawl 3 rotates through this through-hole to be connected in the connecting axle, for making pawl 3 not break away from when the motion, the up end welding of connecting axle has the axle cap, and the axle cap is greater than the cylinder of ratchet 2 through-hole between for making pawl 3 can not break away from the connecting axle when the motion. The upper end surface of the sleeve 4 is welded with a support plate 31 at a position close to the pawl 3, a spring 32 is welded at a position close to the pawl 3 of the support plate 31, one end of the spring 32 far away from the support plate 31 is welded on the side surface close to the support plate 31 of the pawl 3, and the pawl 3 is kept in a contact state with the ratchet 2 through the spring 32.

The rotating rod 21 is welded at one end of the ratchet 2 far away from the upper end surface of the sleeve 4, the rotating rod 21 is tubular, so that the rotating rod 21 can rotate conveniently, the inner diameter of the rotating rod 21 is larger than the outer diameter of the bearing 23, and the outer diameter of the rotating rod 21 is smaller than the diameter of the surface of the ratchet 2 where the bottom end of the gear teeth is located. The handle 24 is welded to the upper end surface of the rotary rod 21, the handle 24 is cylindrical, and the handle 24 is symmetrical with respect to the axis center of the rotary rod 21 in order to balance the force.

In order to take out the sampling cylinder 1 more easily, the sleeve 4 can be connected with the stripper plate 5 in a sliding manner, the stripper plate 5 is in a circular plate shape, the side surface of the stripper plate 5 is attached to the inner side wall of the sleeve 4, and the stripper plate 5 is arranged between the sampling cylinder 1 and the sleeve 4. Two cylindrical push rods 51 are welded on the upper end face of the discharging plate 5, two through holes are formed in corresponding positions of the upper end of the sleeve 4, and the push rods 51 penetrate through the through holes. After the sampling is completed, the push rod 51 is pushed, and the sampling cylinder 1 can be pushed out of the sleeve 4 through the stripper plate 5. To facilitate pushing, a cylindrical spacer 52 is screwed to the shank.

Because the operational environment of sample is mostly earth, silt environment, in order to protect 2 pawls 3 of ratchet, the up end of sleeve 4 is provided with closing cap 6, and closing cap 6 is one end open-ended cylindricly, and the part internal diameter that closing cap 6 kept away from the open end slightly is less than sleeve 4 external diameter, and the internal diameter that closing cap 6 is close to the part of open end is the same with sleeve 4 external diameter, forms a step face between the two parts on closing cap 6. When the sealing cover 6 is arranged on the sleeve 4, the step surface is attached to the upper end surface of the sleeve 4, and the opening end is nested on the sleeve 4. The upper end of the cover 6 is provided with through holes at corresponding positions for the rotating rod 21 and the push rod 51 to extend out.

When the sampling tube 1 samples downwards, a closed space can be formed between sampling points of the sampling tube 1, in order to reduce resistance of air in the closed space to the downward formation of the sleeve 4, the upper end surface of the sleeve 4 is provided with a ventilation hole for ventilation, and the ventilation hole penetrates through the discharging plate 5 and the sealing cover 6 simultaneously.

The implementation principle of the embodiment is as follows: when needing to take a sample, place sawtooth 41 of sleeve 4 lower extreme at the sampling point, keep bull stick 21 and ground vertical state, rotate bull stick 21 through handle 24, exert decurrent pressure to handle 24 simultaneously, bull stick 21 drives the ratchet 2 rotatory, and the ratchet 2 drives sleeve 4 rotatory through pawl 3, after rotating certain angle, resets bull stick 21, then rotates once more to make sawtooth 41 rotatory, make sleeve 4 rotatory downward, accomplish the sample. After the completion of the sampling, the push rod 51 is pushed to push the sampling cylinder 1 out of the sleeve 4 through the discharging plate 5, so as to carry out the subsequent experimental steps.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a geotome for geotechnique's compactness detects, includes sampler barrel (1), its characterized in that: the sampling tube (1) lower extreme is provided with sawtooth (41), the upper end of sampling tube (1) rotationally is connected with ratchet (2), pawl (3) are installed to sampling tube (1) upper end, ratchet (2) are kept away from the one end fixedly connected with bull stick (21) of sampling tube (1).

2. The geotome for geotechnical compaction detection of claim 1 wherein: the outer side of the sampling tube (1) is detachably connected with a sleeve (4), the saw teeth (41) are fixedly connected with the lower end face of the sleeve (4), the pawls (3) are hinged to the upper end face of the sleeve (4), and the ratchet wheel (2) is rotatably connected with the upper end face of the sleeve (4).

3. The geotome for geotechnical compaction detection of claim 1 wherein: the lower end of the sampling tube (1) is arranged to be a conical surface inclined towards the inner side.

4. The geotome for geotechnical compaction detection of claim 2 wherein: the sampling device is characterized in that a discharging plate (5) is arranged in the sleeve (4) in a sliding manner, the sampling cylinder (1) is arranged on the lower end face of the discharging plate (5), a push rod (51) is fixedly connected to the upper end face of the discharging plate (5), and the push rod (51) penetrates through the upper end face of the sleeve (4).

5. The geotome for geotechnical compaction detection of claim 2 wherein: the outer side wall of the sampling tube (1) is attached to the inner side wall of the sleeve (4).

6. The geotome for geotechnical compaction detection of claim 4 wherein: a sealing cover (6) is installed at the upper end of the sleeve (4), the ratchet wheel (2) and the pawl (3) are located in the sealing cover (6), and the rotating rod (21) and the push rod (51) penetrate out of the sealing cover (6).

7. The geotome for geotechnical compaction detection of claim 6 wherein: the upper end surface of the sleeve (4) is provided with air holes, and the air holes simultaneously penetrate through the sealing cover (6) and the discharging plate (5).

8. The geotome for geotechnical compaction detection of claim 1 wherein: a cylindrical handle (24) is mounted at the upper end of the rotating rod (21), the axis of the handle (24) is perpendicular to the axis of the rotating rod (21), and the two ends of the handle (24) are symmetrical about the central axis of the rotating rod (21).