CN212363989U

CN212363989U - Test calibration device

Info

Publication number: CN212363989U
Application number: CN202020890583.0U
Authority: CN
Inventors: 夏晓春; 张利; 邸元秀; 朱琦
Original assignee: Sinohydro Bureau 12 Co Ltd
Current assignee: Sinohydro Bureau 12 Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-01-15
Anticipated expiration: 2030-05-25

Abstract

The application discloses experimental calibrating device and calibration method, experimental calibrating device, including barrel, bottom plate, the lantern ring and striking post, bottom plate and lantern ring set up two nozzle departments at the barrel respectively, just a nozzle of barrel is sealed to the bottom plate is fixed, another nozzle department is fixed to lantern ring detachably, and the inboard anchor ring of the lantern ring is unanimous with the shape of the inner tube face of barrel, just the height of barrel is 3 times of lantern ring height. The application also discloses a calibration method.

Description

Test calibration device

Technical Field

The utility model relates to a building detection area especially relates to an experimental calibrating device.

Background

The nuclear density instrument needs to know the calibration coefficient (K value) before use, and after the calibration K value is obtained, the accuracy of the nuclear density instrument in detecting the wet density and the water content is improved.

Many large buildings need to use various filling materials, for example, a barrage of a hydropower station with two estuaries is a gravel soil core wall rock-fill dam, the height of the dam is 295m, and the filling materials need to use a filter material I, gravel soil materials and contact clay. The re-measurement of the anti-filtering material I (soil material), the gravel soil material and the contact clay of the dam adopts the nuclear density detection, but the moisture content detected by the nuclear density is greatly different (about 5 percent) from that detected by an indoor moisture content drying method, and the difference of the wet density is very small. According to the conditions that the difference of the water content is large and the difference of the wet density is small, field detection personnel generally adopt field in-situ calibration, and the field in-situ calibration can also obtain a K value, but the method has the following problems: 1. during on-site calibration, the filling materials are uniform and relatively poor, so that the calibration result is influenced; 2. during field calibration, the environmental temperature difference influences the calibration result; 3. in the field calibration, the mechanical vibration is large, which affects the calibration result, and the mechanical work is stopped to perform the calibration, which affects the construction progress, and increases the economic cost (about 60 machines in total such as a bulldozer, a vibration roller, and a dump truck). 4. During on-site calibration, a large number of constructors are needed, the radiation of the nuclear density instrument is large, the harm to the body of a worker is large, at least 4 testers are added for protection, and the test cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to above-mentioned problem, provide an experimental calibrating device and calibration method.

The utility model adopts the following technical scheme:

the utility model provides an experimental calibrating device, includes barrel, bottom plate, the lantern ring and striking post, bottom plate and lantern ring set up two nozzle departments at the barrel respectively, just a nozzle of barrel is sealed to the bottom plate is fixed, another nozzle department is fixed to lantern ring detachably, and the inboard anchor ring of the lantern ring is unanimous with the shape of the inner tube face of barrel, just the height of barrel is 3 times of lantern ring height.

The effect of this experimental calibrating device is to measure after the soil sample compaction that needs the measurement, and its effect is equivalent to and has gone on in the experiment that goes on the job site originally in the transfer to the laboratory, for measuring at the job site, this device can not receive soil sample inhomogeneous, ambient temperature difference influence, further solves the construction progress and practices thrift the cost simultaneously, avoids the radiation simultaneously to give other people the injury that brings, reduces the testing cost.

The concrete bottom plate is provided with a connecting part, and the base is conveniently and fixedly arranged on the ground under the connecting action of the connecting part.

Optionally, the portable electronic device further comprises a connecting rod, one end of the connecting rod is matched with the bottom plate in a threaded connection mode, and the other end of the connecting rod is detachably matched with the lantern ring.

Optionally, a nut is arranged at one end of the connecting rod and tightly attached to the lantern ring, and the lantern ring is clamped on the barrel under the combined action of the nut and the connecting rod.

The function of setting up the connecting rod is that be convenient for disassemble the lantern ring from the barrel.

Optionally, the barrel body further comprises a handle, and the handle is fixedly arranged on the outer wall surface of the barrel body.

Optionally, the impact protection device further comprises an operating rod, and the operating rod is fixedly arranged on the impact column.

Optionally, the operating rod is a T-shaped operating rod.

Optionally, the cylinder is a circular cylinder, the lantern ring is a circular lantern ring, the impact column is a cylindrical impact column, and the inner diameter of the cylinder is equal to that of the lantern ring.

A calibration method comprises the following steps,

s1 (soil compacting step); placing the soil sample in a test calibration device, enabling the height of the soil sample to be flush with the annular opening of the lantern ring, impacting the soil sample by utilizing an impact column, impacting the barrel and the soil sample in the lantern ring until the wet density reaches more than 2.0, then dismantling the lantern ring and cutting off the soil sample outside the barrel;

s2 (sample measurement step): measuring the water content m by using a nucleon densimeter₁Drying and weighing the soil in the cylinder to obtain the water content m₂。

The K value is calculated by the method of (m)₁-m₂)/(m₂+100) 1000, the nuclear density instrument can be directly measured in laboratory by using said methodThe K value is not required to be measured on a construction site, and the measurement is convenient and quick.

Optionally, the soil sample is filled three times in the test calibration device, and the thickness of each filling is 1/3 of the total height of the cylinder and the lantern ring.

Optionally, when the impact column is used for impacting the soil sample, the soil sample is gradually impacted from the edge of the lantern ring to the center of the lantern ring.

The edge of the lantern ring impacts the soil sample to the center of the lantern ring, so that the soil sample can be prevented from overflowing from the lantern ring in the process of compacting the soil sample.

The utility model has the advantages that: the effect of this experimental calibrating device is to measure after the soil sample compaction that needs the measurement, and its effect is equivalent to and has gone on in the experiment that goes on the job site originally in the transfer to the laboratory, for measuring at the job site, this device can not receive soil sample inhomogeneous, ambient temperature difference influence, further solves the construction progress and practices thrift the cost simultaneously, avoids the radiation simultaneously to give other people the injury that brings, reduces the testing cost.

Description of the drawings:

FIG. 1 is a schematic view of the mating relationship of the cartridge and collar;

fig. 2 is a schematic view of the structure of the impact column.

The figures are numbered: 1. bottom plate, 2, barrel, 3, the lantern ring, 4, connecting rod, 5, handle, 6, connecting portion, 7, striking post, 8, action bars.

The specific implementation mode is as follows:

the present invention will be described in detail with reference to the accompanying drawings.

As shown in attached figures 1 and 2, the test calibration device comprises a barrel body 2, a bottom plate 1, a lantern ring 3 and an impact column 7, wherein the bottom plate 1 and the lantern ring 3 are respectively arranged at two barrel openings of the barrel body 2, the bottom plate 1 is used for fixedly sealing one barrel opening of the barrel body 2, the lantern ring 3 is detachably fixed at the other barrel opening, the inner side annular surface of the lantern ring 3 is consistent with the shape of the inner barrel surface of the barrel body 2, and the height of the barrel body 2 is 3 times of the height of the lantern ring 3.

The concrete bottom plate 1 is provided with a connecting part 6, and the base is conveniently and fixedly arranged on the ground under the connecting action of the connecting part 6.

As shown in fig. 1 and fig. 2, the shoe cover further comprises a connecting rod 4, one end of the connecting rod 4 is matched with the base plate 1 in a threaded connection mode, and the other end of the connecting rod 4 is detachably matched with the lantern ring 3.

As shown in attached figures 1 and 2, one end of the connecting rod 4 is provided with a nut which is tightly attached to the lantern ring 3, and the lantern ring 3 is tightly clamped on the cylinder body 2 under the combined action of the nut and the connecting rod 4.

The function of the connecting rod 4 is to facilitate the disassembly of the collar 3 from the barrel 2.

As shown in fig. 1 and 2, the device further comprises a handle 5, and the handle 5 is fixedly arranged on the outer wall surface of the cylinder 2.

As shown in fig. 1 and 2, the impact mechanism further comprises an operating rod 8, and the operating rod 8 is fixedly arranged on the impact column 7.

As shown in fig. 1 and 2, the operation lever 8 is a T-shaped operation lever 8.

As shown in fig. 1 and 2, the cylinder 2 is a circular cylinder 2, the collar 3 is a circular collar 3, the impact post 7 is a cylindrical impact post 7, and the inner diameter of the cylinder 2 is equal to the inner diameter of the collar 3.

A calibration method comprises the following steps,

s1 (soil compacting step); placing the soil sample in a test calibration device, enabling the height of the soil sample to be flush with the annular opening of the lantern ring 3, impacting the soil sample by utilizing an impact column 7, impacting the barrel body 2 and the soil sample in the lantern ring 3 until the wet density reaches more than 2.0, then removing the lantern ring 3 and removing the soil sample outside the barrel body 2;

s2 (sample measurement step): measuring the water content m by using a nucleon densimeter₁Then the soil in the cylinder 2 is dried and weighed to obtain the soilWater content m₂。

The K value is calculated by the method of (m)₁-m₂)/(m₂+ 100). 1000, the method can directly measure the K value of the nuclear densitometer in a laboratory without measuring the K value on a construction site, and the measurement is convenient and quick.

The beneficial effect of the method is further explained by combining the attached drawings 1 and 2, and because the volume in the cylinder body is fixed, the wet density of the soil can be obtained by directly dividing the mass of the soil sample by the volume in the cylinder body after the soil sample outside the cylinder body is flattened during measurement.

The soil samples were filled three times in the test calibration apparatus, and the thickness of each fill was 1/3 times the total height of the barrel 2 and collar 3.

When the impact column 7 is used for impacting the soil sample, the soil sample is gradually impacted from the edge of the lantern ring 3 to the center of the lantern ring 3.

The edge of the lantern ring 3 impacts the soil sample to the center of the lantern ring 3, so that the soil sample can be prevented from overflowing from the lantern ring 3 in the process of compacting the soil sample.

The above only is the preferred embodiment of the present invention, not therefore the limit the patent protection scope of the present invention, all applications the equivalent structure transformation made by the contents of the specification and the drawings of the present invention is directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. The utility model provides an experimental calibrating device, its characterized in that, includes barrel, bottom plate, the lantern ring and striking post, bottom plate and lantern ring set up respectively in two nozzle departments of barrel, just a nozzle of barrel is sealed to the bottom plate is fixed, another nozzle department is fixed to lantern ring detachably, and the inboard anchor ring of the lantern ring is unanimous with the shape of the inner tube face of barrel, just the height of barrel is 3 times of lantern ring height.

2. The test calibration device of claim 1, further comprising a connecting rod, one end of the connecting rod being threadably engaged with the base plate, the other end of the connecting rod being removably engaged with the collar.

3. The test calibration device of claim 2 wherein the connecting rod is provided with a nut at one end, the nut abutting the collar, the nut and connecting rod cooperating to clamp the collar to the barrel.

4. The trial calibration device of claim 1, further comprising a handle fixedly disposed on the outer wall surface of the cartridge.

5. The test calibration device of claim 1, further comprising an operating rod fixedly disposed on the strike post.

6. The test calibration device of claim 5, wherein the lever is a T-shaped lever.

7. The test calibration device of claim 1, wherein the cylinder is a circular cylinder, the collar is a circular collar, the strike post is a cylindrical strike post, and the inner diameter of the cylinder is equal to the inner diameter of the collar.