CN210269010U - Hopper and soil tamping device for soil pressure calibration - Google Patents

Abstract

The utility model discloses a soil pressure is markd and is used hopper and soil tamping unit, soil pressure is markd and is used hopper, include: a bucket body; the bucket body is a trapezoid body with a large upper part and a convergent lower part and an opening upper part. The bucket body is characterized in that lifting rings are arranged around the opening of the bucket body, the bottom of the bucket body is a movable bottom plate, the movable bottom plate is hinged to the bottom of the side face of the bucket body, the movable bottom plate can be opened downwards by taking the hinged position as the axial direction, the bucket body is used for cleaning the soil body in the bucket quickly by opening the movable bottom plate after calibration work is completed, and the movable bottom plate is provided with a locking device and can be clamped by the movable bottom plate to limit the bucket body to be opened downwards. The soil compaction device is used for compacting soil in the hopper. The utility model has the advantages that: simple structure is reasonable, and is more accurate than water, oil or gas mark soil pressure gauge in the past, is applicable to different job sites moreover, and is simpler than large-scale pit body normal position demarcation process in the past, and efficiency is higher, and the cost is lower.

Description

Hopper and soil tamping device for soil pressure calibration

Technical Field

The utility model relates to a technical field is markd to soil pressure, in particular to soil pressure is markd with hopper and soil tamping device.

Background

In the existing market, the sensitivity coefficient of the soil pressure gauge basically adopts the numerical value of water, oil or gas mark when leaving factory, during actual monitoring or model experiment, the surface of the soil pressure gauge contacts with the soil body and measures the numerical value, and the error of the actual measured value of the soil pressure under the calibration parameter of gas (liquid) is about 50-300% due to a plurality of factors such as 'soil arching effect'. Therefore, many people adopt a sand calibration device, and the following are common: (1) a reinforced concrete bottom plate, a jack, a reaction frame, a ground anchor, a loading steel plate, a rubber pad and the like are arranged in the site sandy soil calibration pit to calibrate the soil pressure gauge. The calibration device is complex to assemble and low in manufacturing cost; (2) the soil pressure gauge is improved and calibrated on common geotechnical instruments such as a consolidation compressor. The calibration device has a small size of the consolidometer and a large error range of calibration parameters.

Along with the attention of health monitoring dates of a large number of soil structures such as foundations of high-rise buildings, large underground structures, foundation pit soil bodies, high-speed rails, roadbeds of airports, slopes and the like and the improvement of the precision of experimental data of scientific research models, the soil pressure gauge is required to accurately output the soil pressure change. Therefore, the work of calibrating the parameters of the soil pressure gauge needs to be further solved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's defect, provide a soil pressure is markd and is used hopper and soil tamping device, solved the defect that exists among the prior art.

In order to realize the purpose of the utility model, the utility model discloses the technical scheme who takes as follows:

a hopper for soil pressure calibration comprises: a bucket body; the bucket body is a trapezoid body with a large upper part and a convergent lower part and an opening upper part.

The bucket body is characterized in that lifting rings are arranged around the opening of the bucket body, the bottom of the bucket body is a movable bottom plate, the movable bottom plate is hinged to the bottom of the side face of the bucket body, the movable bottom plate can be opened downwards by taking the hinged position as the axial direction, the bucket body is used for cleaning the soil body in the bucket quickly by opening the movable bottom plate after calibration work is completed, and the movable bottom plate is provided with a locking device and can be clamped by the movable bottom plate to limit the bucket body to be opened downwards.

Furthermore, the two movable bottom plates are hinged to the bottoms of the two side faces of the hopper body respectively and can be opened downwards at the same time.

Furthermore, the locking device is a bolt and a bolt seat which are respectively arranged on the two movable bottom plates.

Further, the locking device is a clamping strip which is arranged on the side surface of the bottom of the bucket body and can rotate 360 degrees. The clamping strip can rotate by taking the joint of the clamping strip and the bucket body as a shaft, and the shaft rotates to the lower surface of the movable bottom plate and limits the movable bottom plate to be opened downwards.

The utility model also discloses a soil compacting device used for the hopper for soil pressure calibration, which comprises a handle, a connecting rod and a compacting plate;

connecting rod upper end fixed connection handle, lower extreme fixed connection tamping plate, tamping plate divide into the three-layer, from last to being 35mm thick steel sheet, 10 mm's thick rubber pad, the mirror surface corrosion resistant plate of 5mm thick respectively down.

Compared with the prior art, the utility model has the advantages of:

simple structure is reasonable, and is more accurate than water, oil or gas mark soil pressure gauge in the past, is applicable to different job sites moreover, and is simpler than large-scale pit body normal position demarcation process in the past, and efficiency is higher, and the cost is lower.

Drawings

FIG. 1 is a schematic structural view of a bucket body according to an embodiment of the present invention;

FIG. 2 is a top view of a bucket body according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a movable bottom plate of the bucket body according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of the soil compacting apparatus according to the embodiment of the present invention;

figure 5 is the structural schematic diagram of the tamping plate of the embodiment of the present invention.

Description of reference numerals: 1 is the bucket body, 2 is the ring of hoisting, 3 movable bottom plate, 4 is the card strip, 5 is the handle, 6 is the connecting rod, 7 is the ramming plate, 8 is the steel sheet, 9 is thick rubber pad, 10 is corrosion resistant plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 3, a hopper for soil pressure calibration includes: a bucket body 1; the bucket body 1 is a trapezoidal body having a large upper part and a small lower part and an open upper part.

The periphery of the opening of the bucket body 1 is provided with a hoisting ring 2, the bottom of the bucket body 1 is a movable bottom plate 3, and the movable bottom plate 3 is hinged with the bottom of the side surface of the bucket body 1, so that the movable bottom plate 3 can be opened downwards by taking the hinged part as an axial direction, and the function is to quickly clear soil inside the bucket by opening the movable bottom plate 3 after the calibration work is completed.

Specifically, the two movable bottom plates 3 are respectively hinged to the bottoms of the two side surfaces of the bucket body 1 and can be opened downwards at the same time. The movable bottom plate 3 is provided with locking devices which can lock the movable bottom plate 3, and the locking devices can be bolts and bolt seats which are respectively fixed on the two movable bottom plates 3. Or a clamping strip 4 which is arranged on the side surface of the bottom of the bucket body 1 and can rotate 360 degrees. The card strip 4 can rotate to the lower surface of the movable bottom plate 3 and limit the downward opening of the movable bottom plate 3.

As shown in fig. 4 and 5, the soil compacting device for the hopper for calibrating soil pressure comprises a handle 5, a connecting rod 6 and a compacting plate 7, wherein the upper end of the connecting rod 6 is fixedly connected with the handle 5, the lower end of the connecting rod 6 is fixedly connected with the compacting plate 7, and the compacting plate 7 is divided into three layers, namely a steel plate 8 with the thickness of 35mm, a rubber pad 9 with the thickness of 10mm and a thin layer 304 of mirror surface stainless steel plate 10 with the thickness of 5mm from top to bottom. In the compaction process, the soil pressure sensor can be protected without being stained with clay.

When the calibration work is carried out, firstly, loose clay with the thickness of 40cm is placed at the bottom of the hopper, a soil tamping device is used for tamping the loose clay to 20cm, in the tamping process, the whole soil surface is lightly tamped for 3-4 times, then the soil is tamped for 2-3 times, and the soil body is compacted as much as possible.

Placing a soil pressure gauge at the center of the hopper, spreading fine sand particles of 2-3cm on the bottom of the soil pressure gauge before placing the soil pressure gauge, scattering small projection sand on the soil pressure gauge to ensure that the scattered sand has no large blocks, rubbing the sand by hand, and uniformly covering the soil pressure gauge to 2-3 cm.

The data line connected with the soil pressure gauge is required to be discharged from the hopper along the inner wall of the hopper and connected with the Donghua dynamic signal acquisition and analysis instrument. Then, shovel 20cm of loose clay into the hopper, tamp it evenly to 10cm of compacted soil. In the software, the pressure value at that time is recorded (before calibration, the soil pressure gauge should be cleared). Repeating the step for 5-6 times, recording the pressure values of different overlying soil layers respectively, and further processing the data to obtain the accurate sensitivity coefficient of the soil pressure gauge.

It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims (5)

1. A hopper for soil pressure calibration comprises: a bucket body; the bucket body is a trapezoid body with a large upper part and a convergent lower part and an opening at the upper part;

the bucket body is characterized in that lifting rings are arranged around the opening of the bucket body, the bottom of the bucket body is a movable bottom plate, the movable bottom plate is hinged to the bottom of the side face of the bucket body, the movable bottom plate can be opened downwards by taking the hinged position as the axial direction, the bucket body is used for cleaning the soil body in the bucket quickly by opening the movable bottom plate after calibration work is completed, and the movable bottom plate is provided with a locking device and can be clamped by the movable bottom plate to limit the bucket body to be opened downwards.

2. The hopper for calibrating soil pressure according to claim 1, wherein: the two movable bottom plates are hinged to the bottoms of the two side faces of the bucket body respectively and can be opened downwards at the same time.

3. The hopper for calibrating soil pressure according to claim 2, wherein: the locking device is a bolt and a bolt seat which are respectively arranged on the two movable bottom plates.

4. The hopper for calibrating soil pressure according to claim 2, wherein: the locking device is a clamping strip which is arranged at the bottom of the side surface of the bucket body and can rotate 360 degrees; the clamping strip can rotate by taking the joint of the clamping strip and the bucket body as an axis, rotates to the lower surface of the movable bottom plate and limits the movable bottom plate to be opened downwards.

5. The hopper for soil pressure calibration according to claim 3 or 4, wherein: the hopper for soil pressure calibration tamps soil through a soil tamping device, the soil tamping device comprising: the handle, the connecting rod and the tamping plate;

connecting rod upper end fixed connection handle, lower extreme fixed connection tamping plate, tamping plate divide into the three-layer, from last to being 35mm thick steel sheet, 10 mm's thick rubber pad, the mirror surface corrosion resistant plate of 5mm thick respectively down.

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