Overall rapid forming sample preparation device for homogeneous remolded sample

Abstract

The utility model relates to an integral rapid forming and sample preparation device for a homogeneous remolded sample, and belongs to the field of geotechnical tests of geotechnical engineering. Comprising a compaction cylinder which is used for containing sample soil; the lower base is detachably connected to the bottom of the compaction cylinder; the upper base is connected into the compaction barrel from the top of the compaction barrel; and the fixing assembly is connected to the compaction cylinder and used for locking the upper base in the compaction cylinder. According to the device, sample soil is put into the compaction barrel, the lower base is in close contact with the sample soil, the upper base loads and compresses the sample soil under the action of the fixing assembly, demolding is performed after the sample soil is formed, a soil sample is obtained, the sample soil is added into the compaction barrel at a time, and the problem that the upper soil body and the lower soil body are not uniform due to layered compaction is solved; the sample soil is convenient to load and compact, the traditional manufacturing device and method are improved, and the manufacturing efficiency of the geotechnical sample is improved.

Description

Technical Field

[0001] This application relates to the field of geotechnical engineering soil tests, and particularly to a device for integrally and rapidly forming a homogeneous remolded sample. Background Art

[0002] Through geotechnical tests, physical and mechanical properties such as the triaxial compressive strength, uniaxial compressive strength, and triaxial shear strength of soil can be measured. The main sources of soil samples for this test are undisturbed soil samples and artificially simulated test soil samples.

[0003] Since natural undisturbed soil samples are not disturbed and are relatively close to the original structure of the real soil, due to the influence of human factors, sampling techniques, and the properties of the soil samples themselves, it is difficult to ensure the homogeneity of the soil samples in undisturbed soil tests and it is not easy to control. The remolding test is optimized based on the undisturbed soil test, improving controllability and being widely used in comparative test research. The remolding test has also become a common method for measuring the physical and mechanical properties of soil.

[0004] In traditional geotechnical tests when making soil samples, a core cutter or other sampling tools are used to cut samples from undisturbed soil. During the cutting process, a thin layer of vaseline should be applied to the inner wall of the core cutter to avoid gaps between the sample and the inner wall of the core cutter. The traditional method of making soil samples often causes the inhomogeneity of the samples due to the loading direction and the cumbersome sample preparation process, and at the same time reduces the efficiency of sample preparation. Summary of the Invention

[0005] The embodiments of this application provide a device for integrally and rapidly forming a homogeneous remolded sample to solve the problems in the related art that in traditional geotechnical tests when making soil samples, the inhomogeneity of the samples is often caused due to the loading direction and the cumbersome sample preparation process, and at the same time the efficiency of sample preparation is reduced.

[0006] The embodiments of this application provide a device for integrally and rapidly forming a homogeneous remolded sample, including a compaction cylinder for containing sample soil therein; a lower base detachably connected to the bottom of the compaction cylinder; an upper base connected to the inside of the compaction cylinder from the top of the compaction cylinder; and a fixing component connected to the compaction cylinder for locking the upper base inside the compaction cylinder.

[0007] In some embodiments, the fixing component includes an external thread seat connected to the upper base, and internal threads are provided on the inner wall of the compaction cylinder, and the external thread seat is in threaded cooperation with the internal threads on the inner wall of the compaction cylinder.

[0008] In some embodiments, the fixing component includes: a support plate rotatably connected to the top of the compaction cylinder; a fixing screw connected to the support plate and extending towards the inside of the compaction cylinder so that the end of the fixing screw abuts against the upper base.

[0009] In some embodiments, the fixing component further includes a fixing nut, the fixing nut is connected to the support plate, and the fixing screw is also in threaded cooperation with the fixing nut.

[0010] In some embodiments, the upper base is provided with an abutting groove adapted to the fixing screw.

[0011] In some embodiments, the compaction cylinder includes: a left half cylinder; a right half cylinder; a connecting member that connects the left half cylinder and the right half cylinder respectively.

[0012] In some embodiments, the connecting member includes a rotating hinge, one end of the rotating hinge is connected to the left half cylinder, the other end is connected to the right half cylinder, and a fixing member is further provided on the compaction cylinder, and the fixing member is used to fix the left half cylinder and the right half cylinder.

[0013] In some embodiments, the fixing member includes a clamp, and the clamp is sleeved on the compaction cylinder.

[0014] In some embodiments, the compaction cylinder is provided with scales.

[0015] In some embodiments, the inner wall of the compaction cylinder is coated with vaseline.

[0016] The beneficial effects brought by the technical solution provided by this application include:

[0017] The embodiment of this application provides a device for rapid prototyping of a homogeneous remolded sample as a whole. By placing the sample soil into the sample preparation device composed of a compaction cylinder, a lower base, an upper base and a fixing component, the lower base is in close contact with the sample soil, and the upper base applies a downward load to compress the sample soil under the action of the fixing component, so that the sample soil is rapidly formed. Finally, the compaction cylinder is separated from the formed sample soil, and the tester can directly take out the once-formed remolded soil, which makes it more convenient and faster to take out the soil sample and is not likely to cause extrusion deformation of the remolded soil sample during the taking-out process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall structural schematic diagram provided by the embodiment of this application;

[0020] Figure 2 It is the structural schematic diagram showing the compaction cylinder provided by the embodiment of this application;

[0021] Figure 3 This is a schematic structural diagram of the display clamp provided by the embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of the display lower base provided by the embodiment of the present application;

[0023] Figure 5 This is a schematic structural diagram of the display external thread seat provided by the embodiment of the present application;

[0024] Figure 6 This is a schematic structural diagram of the display support plate, fixing screw and fixing nut provided by the embodiment of the present application;

[0025] Figure 7 This is a schematic diagram showing the connection state of the fixing screw and the upper base provided by the embodiment of the present application;

[0026] Reference numerals:

[0027] 1. Compaction cylinder; 10. Left half cylinder; 11. Right half cylinder; 12. Connection groove; 2. Lower base; 3. Upper base; 4. External thread seat; 50. Support plate; 51. Fixing screw; 52. Fixing nut; 6. Groove; 7. Rotating hinge; 8. Clamp; 9. Scale. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0029] The embodiment of the present application provides a homogeneous reshaping sample integral rapid prototyping sample preparation device, which can solve the problems that in the traditional geotechnical test for making soil samples, the non-uniformity of the samples is often caused due to the loading direction and the cumbersome sample preparation process, and at the same time, the efficiency of sample preparation is reduced.

[0030] See Figures 1 to 7As shown in the figure, an embodiment of the present application provides a homogeneous reshaped sample integral rapid prototyping sample preparation device, which includes a compaction cylinder 1, a lower base 2, an upper base 3, and a fixing component. The compaction cylinder 1 is set as a cylinder, and the inside of the compaction cylinder 1 is used to hold the sample soil; the lower base 2 is detachably connected to the bottom of the compaction cylinder 1, and the lower base 2 and the compaction cylinder 1 are adaptively set to be circular. The detachable connection between the lower base 2 and the compaction cylinder 1 is convenient and includes, but is not limited to, threaded connection or insertion. If the lower base 2 is threadedly connected to the compaction cylinder 1, a connection groove 12 is provided on the lower base 2, and the inner wall of the connection groove 12 is provided with threads. Tighten the compaction cylinder 1 in the internal thread of the connection groove 12; if the lower base 2 is inserted and matched with the compaction cylinder 1, also choose to provide a connection groove 12 on the lower base 2, and the compaction cylinder 1 is in interference fit with the inner wall of the connection groove 12 to tightly connect the compaction cylinder 1 and the lower base 2. The cross-section of the upper base 3 is also circular, so that the upper base 3 and the compaction cylinder 1 can be stably matched. During use, the upper base 3 is connected into the compaction cylinder 1 from the top of the compaction cylinder 1; the fixing component is connected to the compaction cylinder 1 and is used to lock the upper base 3 in the compaction cylinder 1.

[0031] During the soil sample preparation process of geotechnical tests, first prepare the soil sample according to the specifications of geotechnical tests, dry it, weigh it, and reserve it for use. Then, evenly apply a layer of vaseline on the inner wall of the compaction cylinder 1, and at the same time install the lower base 2. Vaseline, as a lubricant, can significantly reduce the friction between the soil sample and the inner wall of the compaction cylinder 1. During the compaction process of the sample soil, the soil sample will be deformed under the action of external forces. If the friction between the inner wall and the soil sample is too large, it may affect the compaction effect of the soil sample, resulting in uneven compaction or difficulty in achieving the expected compaction degree. By applying vaseline, it can ensure that the soil sample can move and deform smoothly during the compaction process, thereby improving the uniformity and effect of compaction. In addition, during the compaction process, the soil sample may adhere to the inner wall of the compaction cylinder 1 due to extrusion, which will not only affect the extraction and subsequent treatment of the soil sample, but may also cause changes in the properties of the soil sample. Applying vaseline can form a lubricating film between the soil sample and the inner wall of the compaction cylinder 1, effectively preventing the soil sample from adhering to the inner wall, thus facilitating the extraction of the soil sample and the progress of subsequent tests.

[0032] After that, put the weighed and reserved sample soil into the mold composed of the compaction cylinder 1 according to the calculated weight. Then operate the fixing component to lock the upper base 3 in the compaction cylinder 1 to load and compact the sample soil through the upper base 3 until the sample soil is formed. Finally, disassemble the lower base 2 and the compaction cylinder 1, and demold the sample soil from the compaction cylinder 1. When locking the upper base 3, the vertical distance between the upper base 3 and the lower base 2 can be controlled according to the test requirements.

[0033] In this application, a scale 9 is provided on the compaction cylinder 1, which facilitates the test personnel to accurately control the height of the test sample required for the test with reference to the scale 9, ensuring the homogeneity of the sample. Moreover, since the soil sample is added to the compaction cylinder 1 at one time, the problem of uneven upper and lower soil caused by layered compaction is avoided, effectively solving the problem of uneven pressure during sample preparation. It has the characteristics of one-time forming, rapidity, sample homogeneity, and can be used repeatedly for many times, with high practical value and is conducive to popularization.

[0034] In this application, the steps of preparing the soil sample and drying and weighing it for standby include: placing the dry soil on the tray and weighing it, recording the weight and then resetting it to zero, and using the method of spraying water gradually until the mixing ratio requirement is met. The sample soil that meets the mixing ratio requirement is put into the compaction cylinder 1 with a scale 9 according to the calculated weight, and the mixing ratio of the sample soil is strictly carried out according to the test requirements to meet the test requirements.

[0035] In this application, the provided compaction cylinder 1 includes a left half cylinder 10, a right half cylinder 11 and a connecting member, and the connecting member connects the left half cylinder 10 and the right half cylinder 11 respectively. Furthermore, by setting the compaction cylinder 1 into a left half cylinder 10 and a right half cylinder 11, after the sample soil is compacted and formed, demolding can be quickly carried out by opening the sides of the left half cylinder 10 and the right half cylinder 11. The test personnel can directly take out the once-formed remolded soil, which makes it more convenient and fast to take out the soil sample and is not easy to cause extrusion deformation of the remolded soil sample during the taking-out process.

[0036] In this application, the provided connecting member includes a rotating hinge 7, one end of the rotating hinge 7 is connected to the left half cylinder 10, and the other end is connected to the right half cylinder 11. The left half cylinder 10 and the right half cylinder 11 are connected in a rotating connection manner through the rotating hinge 7. In addition, a fixing member is also provided on the compaction cylinder 1, and the fixing member is used to fix the left half cylinder 10 and the right half cylinder 11. The fixing member includes but is not limited to being set as a clamp 8, and the clamp 8 is sleeved on the compaction cylinder 1.

[0037] During use, first close the left half cylinder 10 and the right half cylinder 11, then sleeve the clamp 8 on the left half cylinder 10 and the right half cylinder 11. At this time, the left half cylinder 10 and the right half cylinder 11 are in contact with each other. Then install the lower base 2, and at the same time place the sample soil into the compaction cylinder 1, and further tighten the clamp 8 to ensure that the sample soil will not shift during the compaction process and also ensure the tightness between the left half cylinder 10 and the right half cylinder 11. Finally, after the sample soil is formed, remove the clamp 8, open the left half cylinder 10 and the right half cylinder 11 to take out the sample, and the operation is convenient.

[0038] In this application, the fixed component is provided with an external thread seat 4, which is connected to the upper base 3. An internal thread is provided on the inner wall of the compaction cylinder 1, and the external thread seat 4 is in threaded cooperation with the internal thread on the inner wall of the compaction cylinder 1. After the test soil sample is placed into the compaction cylinder 1, by rotating the upper base 3, the external thread seat 4 is in threaded cooperation with the inner wall of the compaction cylinder 1, and then the test soil sample is loaded downward to compact the test soil sample. The structure is reliable and the operation is convenient. In order to facilitate the rotation of the upper base 3, a handle can also be provided on the upper base 3.

[0039] In some alternative embodiments, a homogeneous remolded sample integral rapid prototyping sample preparation device disclosed in this application, referring to Figure 6 and Figure 7 , is different from the above embodiment in that the set fixed components are different. The fixed components set in this application include: a support plate 50 and a fixing screw 51. The support plate 50 is rotatably connected to the top of the compaction cylinder 1 and is symmetrically distributed with at least two; the fixing screw 51 is connected to the support plate 50 and extends towards the inside of the compaction cylinder 1 so that the end of the fixing screw 51 abuts against the upper base 3. The connection mode between the fixing screw 51 and the support plate 50 is a threaded connection. The support plate 50 is provided with a threaded hole, and the fixing screw 51 passes through the threaded hole and is in threaded cooperation with the support plate 50. After the upper base 3 is placed into the compaction cylinder 1, rotate the fixing screw 51 until the fixing screw 51 abuts against the upper base 3 to tightly press the upper base 3, realizing the loading and compaction of the test soil sample. The operation is convenient and the structure is reliable. In addition, in order to avoid the situation of deviation when the fixing screw 51 abuts against the upper base 3, a butting groove 6 adapted to the fixing screw 51 is also provided on the upper base 3. The butting stability between the fixing screw 51 and the upper base 3 is ensured by the butting between the butting groove 6 and the fixing screw 51.

[0040] In this application, the fixed component further includes a fixing nut 52, the fixing nut 52 is connected to the support plate 50, and the fixing screw 51 is also in threaded cooperation with the fixing nut 52. Through the setting of the fixing nut 52, the connection stability of the fixing screw 51 is further enhanced, so that the butting effect of the fixing screw 51 on the upper base 3 is better, and the forming effect of the test soil is improved.

[0041] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, article or device comprising the said element.

[0043] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A homogenized and reshaped sample overall rapid prototyping device, characterized in that Comprising: A compaction cylinder (1) for containing the test soil sample therein; A lower base (2) detachably connected to the bottom of the compaction cylinder (1); An upper base (3) connected inside the compaction cylinder (1) from the top of the compaction cylinder (1); A fixing assembly connected to the compaction cylinder (1) for locking the upper base (3) inside the compaction cylinder (1).

2. The homogenized and reshaped sample integral rapid prototyping device according to claim 1, wherein: The fixing assembly includes an external thread seat (4) connected to the upper base (3). An internal thread is provided on the inner wall of the compaction cylinder (1), and the external thread seat (4) is in threaded cooperation with the internal thread on the inner wall of the compaction cylinder (1).

3. The homogeneous reshaping sample overall rapid prototyping device according to claim 1, characterized in that: The fixing assembly includes: A support plate (50) rotatably connected to the top of the compaction cylinder (1); A fixing screw (51) connected to the support plate (50) and extending towards the inside of the compaction cylinder (1) so that the end of the fixing screw (51) abuts against the upper base (3).

4. The homogenized and reshaped sample integral rapid prototyping device according to claim 3, characterized in that: The fixing assembly further includes a fixing nut (52) connected to the support plate (50), and the fixing screw (51) is also in threaded cooperation with the fixing nut (52).

5. The homogenized and reshaped sample integral rapid prototyping and sampling device according to claim 3, characterized in that: An abutting groove (6) adapted to the fixing screw (51) is provided on the upper base (3).

6. The homogenized and reshaped sample integral rapid prototyping device according to claim 1, wherein: The compaction cylinder (1) includes: A left half cylinder (10); A right half cylinder (11); A connecting member respectively connecting the left half cylinder (10) and the right half cylinder (11).

7. The homogeneous reshaping sample overall rapid prototyping device according to claim 6, characterized in that: The connecting member includes a rotating hinge (7). One end of the rotating hinge (7) is connected to the left half cylinder (10), and the other end is connected to the right half cylinder (11). A fixing member is also provided on the compaction cylinder (1) for fixing the left half cylinder (10) and the right half cylinder (11).

8. The homogeneous reshaped sample integral rapid prototyping and sampling device according to claim 7, characterized in that: The fixing member includes a clamp (8) sleeved on the compaction cylinder (1).

9. The homogenized and reshaped sample integral rapid prototyping and sampling device according to claim 1, wherein: A scale (9) is provided on the compaction cylinder (1).

10. A homogeneous reshaping sample overall rapid prototyping device according to claim 1, characterized in that: Vaseline is coated on the inner wall of the compaction cylinder (1).

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