CN103630420A - Undisturbed soil collecting device and collection method thereof - Google Patents

Abstract

The invention discloses an undisturbed soil collecting device and a collection method thereof. The device comprises a soil collector, wherein a telescopic force transfer bar is arranged at the upper end of the soil collector; a force application device for providing downward pressure and upward lifting force for the soil collector is arranged at the upper end of the telescopic force transfer bar; a fixing bracket is arranged on the force application device. The downward pressure and upward lifting force are provided for the soil collector through the force application device, so that the soil collector is pushed to collect soil from a soil layer to be collected; the telescopic force transfer bar can be adjusted according to the collection depth. Therefore, the device has the advantages of large collection depth and small disturbance.

Description

A kind of undisturbed soil fetching device and collecting method thereof

technical field

The invention relates to the fields of geological census, geophysical prospecting, and geochemical prospecting rock and soil exploration, in particular to a device for fetching undisturbed soil and a collection method thereof.

Background technique

In conventional geotechnical tests, undisturbed soil is often used in order to do bulk density (soil density), compression, shear, penetration and other tests. Generally speaking, ring cutters are usually used to take undisturbed soil. shape, the bottom side has a certain slope, similar to the blade used for cutting soil, the upper side is not processed, when taking soil samples, add a ring knife cover on the upper side of the ring knife, smash it into the soil layer vertically, and then take it out manually As a whole, the ring-knife soil sample was corrected. Because this method of soil extraction disturbs the soil greatly during the soil extraction process, it is easy to destroy the state of the original soil, which makes the test accuracy inaccurate. Soil extraction is not easy to operate.

Contents of the invention

In view of the above defects or deficiencies, the object of the present invention is to provide a simple in structure, easy to operate undisturbed soil fetching device and its collection method.

For achieving above object, technical scheme of the present invention is:

Including: earth taker, the upper end of the earth taker is installed with a telescopic dowel bar, and the upper end of the telescopic dowel bar is installed with a force device for providing downward pressure and upward lifting force to the earth taker through a connecting pin, and the force device is installed on the There is a fixed bracket, wherein, the soil fetcher includes several interlocking sleeves, wherein the sleeve connected with the telescopic dowel bar is provided with vent holes to reduce the resistance generated when fetching soil, which is consistent with the original state. The outer wall of the sleeve in contact with the soil is a slope opening structure with a slope angle.

A telescopic control device for controlling the length adjustment of the telescopic dowel rod is arranged on the telescopic dowel rod.

The booster device is provided with a lifting control device for controlling the booster device.

The sleeves of the soil fetcher are engaged with each other through screw sockets, and the inner diameters of the sleeves are the same.

A collection method of an undisturbed soil fetching device, comprising the following steps:

1) Assemble the retractable dowel bar according to the depth of soil fetching;

2) Connect the soil fetcher to the retractable dowel bar and place it on the soil layer to be collected;

3) Connect the telescopic dowel rod with the force device;

4) Fix the fixed bracket to the soil layer to be collected, make it fixed, and adjust its height at the same time, then place the booster device on the fixed bracket, adjust it to the desired position and fix it;

5) After being fixed, turn on the booster device, so that the booster device applies an external force downwards, so that the earth taker can be driven into the soil layer. After the soil is fetched, adjust the booster device to lift the soil fetcher to the ground .

In the step 2), apply vaseline inside the earth taker to enhance its lubricity.

Compared with prior art, the beneficial effects of the present invention are:

The undisturbed soil fetching device provided by the present invention is used for collecting undisturbed soil in the field. The earth taker is pressed downward and lifted upward by the force device, and then the earth taker is pushed to collect the soil layer to be collected. The telescopic dowel can be adjusted according to the depth of collection. Therefore, the device has the advantages of taking a high depth and little disturbance. The parts are separated and can be combined when used, which has the advantage of being convenient to carry.

Furthermore, since the top sleeve of the soil extractor is provided with vent holes, the resistance during the soil mining process is small and the soil speed is fast. At the same time, multiple soil mining sleeves can be used interchangeably, and the small-diameter hole-forming equipment can be used to collect different depths. The undisturbed soil improves the work efficiency, the sealed sample is free from pollution, and it is easy to maintain and replace.

The invention provides a method for collecting soil from undisturbed soil. By applying a downward external force to the earth taking device by using a force-applying device, after acting on the soil taking device, it penetrates into the soil layer to be collected. After the soil collecting is completed, the soil taking device is lifted to the ground , to complete the acquisition process, the method adopted in the present invention is simple, easy to operate, easy to control, and has the advantages of high acquisition depth and small disturbance.

Description of drawings

Fig. 1 is a structural schematic diagram of the undisturbed soil fetching device of the present invention.

Among the figure, 1 is a booster, 2 is a lifting control device, 3 is a fixed support, 4 is a connecting bolt, 5 is a telescopic dowel, 6 is a telescopic control device, and 7 is an earth taker.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to shown in Fig. 1, the present invention provides a kind of undisturbed soil fetching device, comprises: force device 1, force device 1 is used for providing downward pressure and upward lift force device 1 to soil fetcher 7 , a fixed bracket 3 is installed on the booster 1, the output end of the booster 1 is connected with a telescopic dowel 5, the booster 1 is connected with the telescopic dowel 5 through a connecting pin 4, the booster 1 A control device 2 for controlling the lifting of the booster device is provided on the top, and a telescopic control device 6 for controlling the length adjustment of the telescopic dowel rod 5 is provided on the telescopic dowel rod 5. The end of the telescopic dowel rod 5 is installed with a The earth taker 7 for obtaining the undisturbed soil, the earth taker 7 includes a plurality of interlocking sleeves, wherein the sleeve connected with the telescopic dowel 5 is provided with an exhaust hole to reduce the resistance generated when taking soil, The outer wall of the sleeve in contact with the undisturbed soil is provided with a bevel with a slope angle, and the sleeves of the soil fetcher 7 are engaged with each other through screw sockets, and the inner diameters of the sleeves are the same.

In the present invention, the booster device 1 is used to provide a downward pressure and an upward lifting control device 2 according to the demand for soil extraction. The booster device 1 can be a booster cylinder, an air booster pump, etc. As a device for applying pressure, the lifting control device 2 is to provide downward pressure and upward lifting force, a lifting switch, and its effect is to control the lifting of the booster. Fixed support 3, its effect is to fix the force adding device to prevent the disturbance of soil caused by offset when taking soil. Retractable dowel bar 5, its effect is that the power of force adding device is applied to earth-borrowing device. The connecting bolt 4 at the telescopic dowel bar 5 upper end, its effect is to link to each other with the booster when promoting the soil fetcher, and the soil fetcher is taken out from the soil. The telescoping control device 6 is a telescoping control button, and its effect is to adjust the length of the dowel bar according to the demand of the depth of soil extraction, so as to extract undisturbed soil samples of different depths. The earth taker 7, its function is to take soil, and it has three parts, each part bites through the screw socket, and the upper sleeve connected with the telescopic dowel 5 is provided with a vent hole, which is convenient for exhausting to reduce the amount of soil taken. The middle part is used to store the undisturbed soil, and the outer wall of the sleeve at the lower end is provided with a bevel with a slope angle, so as to penetrate into the soil body, reduce the resistance of the soil, and facilitate soil retrieval. At the same time, the inner diameters of the three parts of the soil retrieval device are the same In order to reduce disturbance to the undisturbed soil.

The invention is used for collecting undisturbed soil in the field, and can cooperate with small-aperture hole-forming equipment to collect undisturbed soil of different depths. It has the advantages of small shear resistance, fast soil fetching speed, high depth, and small disturbance. At the same time, the soil-taking sleeve can be used for multiple replacements, which improves work efficiency, and the sealed samples are not polluted, and maintenance and replacement are very convenient.

The soil fetching device of the present invention is composed of four parts: a booster device, a fixing device, a dowel bar and a soil fetching device. These four parts are separated and can be combined when in use, which is convenient to carry. The specific operation method is as follows .

Include the following steps:

1) Assemble the telescopic dowel 5 according to the depth of soil fetching, and fix it with the telescopic control device 6;

2) Apply Vaseline inside each sleeve of the soil extractor 7 to enhance its lubricity, and then engage them with screw sockets, and then connect the soil extractor 7 with the dowel bar and place it in the soil layer to be collected;

3) Connect the telescopic dowel bar 5 with the booster device 1;

4) Fix the fixed bracket 3 on the soil layer to be collected, make it fixed, and adjust its height at the same time, then place the force adding device 1 on the fixed bracket 3, adjust it to the desired position and fix it;

5) After being fixed, lift the control device 2 so that the force device 1 exerts an external force downward so as to drive the soil fetching device into the soil layer. After the soil fetching is completed, the lifting control device 2 lifts the soil fetching device to the ground .

The invention takes samples quickly and conveniently, and multiple soil-taking devices can be replaced and used, which improves the soil-taking efficiency. Since the upper and lower parts of the soil-taking device play a sealing role, the undisturbed soil is stored in the middle soil-taking device, which avoids contamination of samples.

Claims (6)

1. a undisturbed soil drawing out soil equipment, it is characterized in that, comprise: soil sample barrel (7), soil sample barrel (7) upper end is provided with scalable transmission rod (5), the upper end of scalable transmission rod (5) is provided with for providing downward pressure to soil sample barrel (7) and the augmentor (1) of the lifting force that makes progress by connecting bolt (4), fixed support (3) is installed on augmentor (1), wherein, described soil sample barrel (7) comprises the sleeve of some joint phases interlock, wherein, on the sleeve being connected with scalable transmission rod (5), be provided with the vent port of the resistance producing while reducing to fetch earth, the sleeve outer wall contacting with undisturbed soil is the slope mouth structure with slope angle.

2. according to the undisturbed soil drawing out soil equipment described in claim 1 any one, it is characterized in that, on described scalable transmission rod (5), be provided with the telescopic control device (6) that regulates length for controlling scalable transmission rod (5).

3. undisturbed soil drawing out soil equipment according to claim 1, is characterized in that, is provided with the apparatus for controlling of lifting (2) of controlling augmentor on described augmentor (1).

4. undisturbed soil drawing out soil equipment according to claim 1, is characterized in that, each sleeve of described soil sample barrel (7) is by the interlock of screw running-on phase, and each sleeve diameter is identical.

5. the acquisition method based on undisturbed soil drawing out soil equipment described in claim 1, is characterized in that, comprises the following steps:

1) according to the degree of depth that fetches earth, assemble scalable transmission rod (5);

2) soil sample barrel (7) is connected with scalable transmission rod (5), is put on soil layer to be collected;

3) scalable transmission rod (5) is connected with augmentor (1);

4) fixed support (3) is fixed on soil layer to be collected, it is fixed, adjust its height simultaneously, subsequently augmentor (1) is placed to fixed support (3) upper, adjust to desired location and fix;

5) after waiting to fix, open augmentor (1), make augmentor (1) apply external force downwards, so that soil sample barrel is driven into soil layer inside, after having fetched earth, regulate augmentor (1), drawing out soil equipment is risen to ground.

6. the acquisition method of undisturbed soil drawing out soil equipment according to claim 1, is characterized in that, described step 2) in, in soil sample barrel (7) inside, smear vaseline, strengthen its lubricity.

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