Geotechnical test soil sample screening equipment

Abstract

The present application discloses a geotechnical test soil sample screening device, comprising: a receiving container, the top of which has an opening; a sieve plate, the sieve plate is fixedly arranged at the opening on the top of the receiving container, the sieve plate has a plurality of sieve holes arranged at intervals and leading to the interior of the receiving container; an enclosure, the enclosure is movably arranged on the top of the sieve plate, the enclosure and the sieve plate are combined to form a feeding chamber that can move with the enclosure and has an open top, the feeding chamber is used to feed the soil sample to be screened; a pressing plate, the pressing plate is slidable up and down in the feeding chamber; a pressurizing mechanism, the pressurizing mechanism is used to drive the pressing plate to squeeze the soil sample fed into the feeding chamber; a driving mechanism, the driving mechanism is used to drive the enclosure to perform linear reciprocating motion relative to the sieve plate in the horizontal direction. The above-mentioned geotechnical test soil sample screening device can automatically process soil particles of different sizes in the soil sample into soil particles of similar sizes, which is beneficial to improving processing efficiency and reducing the labor intensity of relevant operators.

Description

Technical Field

[0001] The present application relates to the technical field of geotechnical testing, and in particular to a geotechnical testing soil sample screening device. Background Art

[0002] When conducting geotechnical tests, air-dried soil samples must first be crushed using traditional soil crushing equipment. A certain amount of pure water is then added to the crushed soil sample and stirred until the soil sample reaches the target moisture content. Finally, the soil sample with the target moisture content is prepared into a test specimen for testing. For geotechnical tests on frozen soil, the uniformity of the soil sample's moisture content has a significant impact. If the soil sample's moisture content is unevenly distributed, the resulting sample preparation within the same batch will result in significant differences, affecting the test results. This is because frozen soil is very sensitive to moisture content during the freezing process. Uneven moisture content distribution can lead to greater dispersion in the prepared samples, and thus in the test data. During the process of adjusting the soil sample's moisture content, even contact with water during stirring cannot be guaranteed. Therefore, caking is common in silty clay and clay soils. Specifically, during the stirring process, soil samples cannot be evenly contacted with water, so there is usually a phenomenon that the water content of some local soil samples is higher, which causes the local soil samples with higher water content to have greater viscosity, thereby forming larger cluster particles, while local soil samples with lower water content will form smaller cluster particles, which in turn causes the soil particles of different sizes and uneven moisture content distribution.

[0003] To this end, it is necessary to process the varying sizes of soil particles within a soil sample into particles of similar size, ensuring a more even distribution of moisture within the soil sample and reducing sample dispersion during sample preparation. However, because silty clay and clay exhibit strong viscosity when their moisture content reaches the liquid limit, using traditional soil crushing equipment to address this issue can cause the soil sample to adhere to its components, resulting in poor operability and significant sample loss. Therefore, manual soil sieving is currently the primary method used to address this issue. Specifically, a soil sample adjusted to the target moisture content is poured through a standard sieve, and the varying sizes of the soil particles are then manually sifted into particles of similar size. However, this manual sieving method suffers from low processing efficiency and is unsuitable for experiments requiring large soil sample volumes. Furthermore, the processing time required is long, which can negatively impact the moisture content of the soil sample. Furthermore, the high viscosity of the soil sample makes it difficult to manipulate, resulting in high labor intensity for the operators involved. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a soil sample screening device for geotechnical tests, which can automatically process soil particles of different sizes in a soil sample into soil particles of similar sizes, thereby improving processing efficiency and reducing the labor intensity of related operators.

[0005] According to the embodiment of the present application, the geotechnical test soil sample screening equipment includes: a material receiving container, the top of the material receiving container has an opening; a sieve plate, the sieve plate is fixedly arranged at the opening at the top of the material receiving container, the sieve plate has a plurality of sieve holes arranged at intervals and leading to the interior of the material receiving container; an enclosure, the enclosure is movably arranged on the top of the sieve plate, the enclosure and the sieve plate are combined to form a feeding cavity that can move with the enclosure and has an open top, and the feeding cavity is used to feed the soil sample to be screened; a pressing plate, the pressing plate is slidable up and down in the feeding cavity; a pressurizing mechanism, the pressurizing mechanism is used to drive the pressing plate to squeeze the soil sample fed into the feeding cavity; a driving mechanism, the driving mechanism is used to drive the enclosure to perform linear reciprocating motion in a horizontal direction relative to the sieve plate.

[0006] The geotechnical test soil sample screening equipment according to the embodiment of the present application has at least the following beneficial effects: when in use, the soil sample is put into the feeding cavity formed by the enclosure and the sieve plate, and then the pressing plate is placed in the above-mentioned feeding cavity, and then the pressing mechanism drives the pressing plate to squeeze the soil sample put into the above-mentioned feeding cavity, and at the same time, the enclosure is driven by the driving mechanism to make a linear reciprocating motion relative to the sieve plate in the horizontal direction. Thereafter, the soil sample put into the above-mentioned feeding cavity is continuously pressed into the sieve hole by the pressing plate and pressed toward the interior of the receiving container. At the same time, when the enclosure is driven by the driving mechanism to make a linear reciprocating motion relative to the sieve plate in the horizontal direction, a shear force can be formed to shear the soil sample, so as to process soil particles of different sizes in the soil sample put into the above-mentioned feeding cavity into soil particles of similar sizes and fall into the receiving container. The above-mentioned geotechnical test soil sample screening equipment can automatically process soil particles of different sizes in the soil sample into soil particles of similar sizes, which is beneficial to improving processing efficiency and reducing the labor intensity of relevant operators.

[0007] According to some embodiments of the present application, the pressurizing mechanism includes a first bracket, a linear drive device and a pressing part, the linear drive device is arranged on the first bracket, the pressing part is arranged at the output end of the linear drive device and is located above the pressure plate, and the linear drive device is used to drive the pressing part to move up and down.

[0008] According to some embodiments of the present application, the geotechnical test soil sample screening equipment further includes a roller, which is movably arranged on the top of the pressure plate, and a blocking portion for preventing the roller from falling is provided at the edge of the pressure plate.

[0009] According to some embodiments of the present application, a pad is provided on the top of the rolling row.

[0010] According to some embodiments of the present application, a lubricating coating is provided on the top of the pressing plate.

[0011] According to some embodiments of the present application, the driving mechanism includes a second bracket, a driving motor and a first connecting rod, the second bracket is arranged on one side of the enclosure, the driving motor is arranged on the second bracket, the output shaft of the driving motor extends in a horizontal direction, one end of the first connecting rod is fixedly connected to the output shaft of the driving motor, the first connecting rod and the output shaft of the driving motor are perpendicular to each other, the other end of the first connecting rod is provided with a first connecting portion, the side of the enclosure facing the second bracket is fixedly provided with a second connecting rod extending in a horizontal direction, the end of the second connecting rod away from the enclosure is provided with a second connecting portion, the second connecting portion has a limiting slide groove extending vertically, and the first connecting portion is slidably connected to the limiting slide groove.

[0012] According to some embodiments of the present application, two side plates for guiding are arranged on the screen plate corresponding to the intervals between the enclosure members, the enclosure member is located between the two side plates, and one of the inner wall of the side plate and the outer wall of the enclosure member is provided with a guide groove, and the other is provided with a slider slidably connected to the guide groove.

[0013] According to some embodiments of the present application, a cutting structure for cutting soil samples is provided on the sieve plate corresponding to the sieve holes.

[0014] According to some embodiments of the present application, the cutting structure includes a cutting piece, and the cutting piece is provided at each of the sieve holes. The cutting piece is fixedly connected to the top of the sieve plate, and there is a gap between the cutting piece and the top surface of the sieve plate. The cutting piece at least partially extends to directly above the corresponding sieve hole, and the edge of the cutting piece has a cutting edge for cutting soil samples.

[0015] According to some embodiments of the present application, the sieve plate is detachably connected to the material receiving container.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 2 is a schematic structural diagram of the geotechnical test soil sample screening device when the enclosure member of the embodiment of the present application moves to one of the extreme positions;

[0019] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle;

[0020] Figure 3 2 is a schematic structural diagram of the geotechnical test soil sample screening device when the enclosure member of the embodiment of the present application is moved to another extreme position;

[0021] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0022] Figure 5 This is an exploded schematic diagram of the material receiving container, sieve plate, enclosure, pressure plate, roller and pad according to an embodiment of the present application;

[0023] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point C in the middle.

[0024] Reference numerals:

[0025] Material receiving container 100, plug-in hole 110, sieve plate 200, sieve hole 210, side plate 220, guide slide 221, plug-in part 230, enclosure 300, second connecting rod 310, second connecting part 311, limiting slide 3111, slider 320, pressure plate 400, blocking part 410, first bracket 510, linear drive device 520, pressing part 530, rolling row 600, main frame 610, roller shaft 620, pad 700, second bracket 810, drive motor 820, first connecting rod 830, first connecting part 831, cutting part 900. DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0027] In the description of this application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0028] In the description of this application, if the words "several", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0029] In the description of this application, if words such as first and second appear, they are only used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0031] Reference Figures 1 to 6 According to the embodiment of the present application, the geotechnical test soil sample screening equipment includes a material receiving container 100, a sieve plate 200, a blocking member 300, a pressing plate 400, a pressurizing mechanism and a driving mechanism.

[0032] The top of the receiving container 100 is open, and the sieve plate 200 is fixedly arranged at the open top of the receiving container 100. The sieve plate 200 has a plurality of sieve holes 210 arranged at intervals and leading to the interior of the receiving container 100. The enclosure 300 is movably arranged on the top of the sieve plate 200. The enclosure 300 and the sieve plate 200 are enclosed to form a feeding cavity that can move with the enclosure 300 and has an open top. The feeding cavity is used to feed the soil sample to be screened. Specifically, the main body of the enclosure 300 is a rectangular frame structure. Of course, the main body of the enclosure 300 It can also be a circular frame structure or other structure that can be enclosed with the sieve plate 200 to form the above-mentioned feeding chamber, which is not limited here. The pressing plate 400 can be slidably arranged in the feeding chamber. Specifically, the shape and size of the pressing plate 400 are adapted to the shape and size of the cross section of the feeding chamber, so that the pressing plate 400 can completely cover the soil sample placed in the above-mentioned feeding chamber. The pressure mechanism is used to drive the pressing plate 400 to squeeze the soil sample placed in the feeding chamber, and the driving mechanism is used to drive the enclosure 300 to perform linear reciprocating motion in the horizontal direction relative to the sieve plate 200.

[0033] During use, the soil sample is put into the feeding cavity formed by the enclosure 300 and the sieve plate 200, and then the pressing plate 400 is placed in the above-mentioned feeding cavity. The pressing plate 400 is then driven by the pressure mechanism to squeeze the soil sample put into the above-mentioned feeding cavity. At the same time, the enclosure 300 is driven by the driving mechanism to make a linear reciprocating motion relative to the sieve plate 200 in the horizontal direction. Thereafter, the soil sample put into the above-mentioned feeding cavity is continuously pressed into the sieve hole 210 by the pressing plate 400 and pressed toward the interior of the receiving container 100. At the same time, when the enclosure 300 is driven by the driving mechanism to make a linear reciprocating motion relative to the sieve plate 200 in the horizontal direction, a shear force can be generated to shear the soil sample, so as to process the soil particles of different sizes in the soil sample put into the above-mentioned feeding cavity into soil particles of similar size and fall into the receiving container 100. The above-mentioned geotechnical test soil sample screening equipment can automatically process soil particles of different sizes in the soil sample into soil particles of similar sizes, which is beneficial to improving processing efficiency and reducing the labor intensity of relevant operators.

[0034] Reference Figure 1 and Figure 3 In some embodiments, the pressurizing mechanism includes a first bracket 510, a linear drive device 520, and a pressing portion 530. The linear drive device 520 is disposed on the first bracket 510. The pressing portion 530 is disposed at the output end of the linear drive device 520 and is located above the pressing plate 400. The linear drive device 520 is used to drive the pressing portion 530 to move up and down, not only allowing the pressing portion 530 to press against the pressing plate 400 and apply vertical pressure, but also allowing the pressing portion 530 to separate from the pressing plate 400, so that the pressing plate 400 can be removed from the above-mentioned feeding chamber after processing is completed. Specifically, the linear drive device 520 includes a motor and a screw transmission assembly. The motor drives the pressing portion 530 to move up and down through the screw transmission assembly.

[0035] It should be noted that, in some other embodiments, the linear drive device 520 may also be a pneumatic cylinder or a hydraulic cylinder, which is not limited here.

[0036] Reference Figure 1 、 Figure 3 and Figure 5In some embodiments, the geotechnical test soil sample screening equipment further includes a roller 600, which is movably arranged on the top of the pressure plate 400, and a blocking portion 410 is provided at the edge of the pressure plate 400 to prevent the roller 600 from falling. During use, since the pressure plate 400 will move with the enclosure 300, in order to reduce the friction between the pressure plate 400 and the pressing portion 530, a roller 600 for transmitting force is provided between the pressure plate 400 and the pressing portion 530. Specifically, the roller 600 includes a main frame 610 and a plurality of rollers 620 arranged side by side on the main frame 610, wherein the specific connection structure between the main frame 610 and the rollers 620 is a well-known technology in the mechanical field and will not be described in detail here.

[0037] Reference Figure 1 、 Figure 3 and Figure 5 In some embodiments, a pad 700 is provided on the top of the roller 600. When in use, the pressing portion 530 presses against the pad 700 and applies vertical pressure. By providing the pad 700 between the pressing portion 530 and the roller 600, the pressure provided by the pressing portion 530 can be evenly transmitted to the roller 600, which helps to prevent the roller 600 from being damaged due to local force concentration.

[0038] It should be noted that, in some other embodiments, the rollers 600 may also be replaced by a lubricating coating disposed on the top of the pressing plate 400 , which is not limited here.

[0039] Reference Figures 1 to 4 In some embodiments, the driving mechanism includes a second bracket 810, a driving motor 820 and a first connecting rod 830. The second bracket 810 is arranged on one side of the enclosure 300, the driving motor 820 is arranged on the second bracket 810, the output shaft of the driving motor 820 extends in the horizontal direction, one end of the first connecting rod 830 is fixedly connected to the output shaft of the driving motor 820, the first connecting rod 830 and the output shaft of the driving motor 820 are perpendicular to each other, the other end of the first connecting rod 830 is provided with a first connecting portion 831, and the enclosure 300 faces the second bracket 81 0 is fixedly provided with a second connecting rod 310 extending in the horizontal direction on one side, and a second connecting portion 311 is provided on the end of the second connecting rod 310 away from the enclosure 300. The second connecting portion 311 has a limiting chute 3111 extending in the vertical direction, and the first connecting portion 831 is slidably connected to the limiting chute 3111. Specifically, the first connecting rod 830, the second connecting rod 310 and the enclosure 300 constitute a crank slider mechanism, so that when the driving motor 820 drives the first connecting rod 830 to rotate, it can drive the enclosure 300 to perform linear reciprocating motion in the horizontal direction relative to the screen plate 200. Among them, the limiting chute 3111 passes through the second connecting portion 311 in the horizontal direction. Of course, the limiting chute 3111 may not pass through the second connecting portion 311, which is not limited here.

[0040] It should be noted that, in some other embodiments, the enclosure 300 may be driven to perform linear reciprocating motion in the horizontal direction relative to the screen plate 200 by a linear driver such as a cylinder or a hydraulic cylinder, which is not limited here.

[0041] Reference Figure 1 、 Figure 3 and Figure 5 In some embodiments, two side plates 220 for guiding are arranged at intervals corresponding to the enclosure 300 on the screen plate 200, and the enclosure 300 is located between the two side plates 220. A guide groove 221 is provided on the inner side wall of the side plate 220, and a slider 320 slidably connected to the guide groove 221 is provided on the outer side wall of the enclosure 300. The above structure can not only limit the enclosure 300, but also guide the enclosure 300, which is beneficial to improving the stability and reliability of the enclosure 300 during operation.

[0042] It should be noted that, in some other embodiments, the guide groove 221 can also be provided on the outer wall of the enclosure 300 , and correspondingly, the slider 320 is provided on the inner wall of the side panel 220 , which is not limited here.

[0043] It should be noted that, in some embodiments, a cutting structure for cutting soil samples is provided on the sieve plate 200 corresponding to the sieve holes 210 , which is helpful in enhancing the cutting effect of the soil samples put into the above-mentioned feeding chamber when used.

[0044] Reference Figure 5 and Figure 6 In some embodiments, the cutting structure includes a cutting piece 900, and a cutting piece 900 is provided at each sieve hole 210. The cutting piece 900 is fixedly connected to the top of the sieve plate 200. There is a gap between the cutting piece 900 and the top surface of the sieve plate 200 so that the soil sample placed in the above-mentioned feeding cavity can be pressed into the sieve hole 210. The cutting piece 900 at least partially extends to the top of the corresponding sieve hole 210, and the edge of the cutting piece 900 has a cutting edge for cutting the soil sample. Furthermore, in order to prevent the enclosure 300 from being interfered with by the cutting piece 900 during movement, a gap can also be provided between the bottom surface of the enclosure 300 and the top surface of the screen plate 200. At this time, a retaining plate can be fixedly provided on the screen plate 200 at the two extreme positions corresponding to the enclosure 300, that is, the two retaining plates are spaced apart along the moving direction of the enclosure 300, and the enclosure 300 moves between the two retaining plates to limit the unscreened soil samples to at least the space enclosed by the two retaining plates and the two side plates 220.

[0045] It should be noted that, in some other embodiments, the thickness of the sieve plate 200 at the edge corresponding to the sieve hole 210 may be reduced to form a cutting edge for cutting the soil sample, which is not limited here.

[0046] It should be noted that, in some embodiments, the sieve plate 200 is detachably connected to the material receiving container 100 to facilitate taking out the soil sample in the material receiving container 100 .

[0047] It should be noted that, in some other embodiments, a discharge port may also be provided on the receiving container 100, which is not limited here.

[0048] Reference Figure 5 In some embodiments, a plurality of spaced-apart plug-in holes 110 are provided on the top of the material receiving container 100, and a plurality of plug-in portions 230 corresponding to the plurality of plug-in holes 110 are provided on the bottom of the sieve plate 200. The plug-in portions 230 are inserted into the plug-in holes 110 so that the sieve plate 200 can be removed from the material receiving container 100.

[0049] It should be noted that, in some other embodiments, the sieve plate 200 may also be connected to the material receiving container 100 by screws, which is not limited here.

[0050] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," and "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0051] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A soil sample screening device for geotechnical tests, characterized in that: include: A material receiving container (100), wherein the top of the material receiving container (100) is open; a sieve plate (200), the sieve plate (200) being fixedly arranged at an open portion of the top of the material receiving container (100), the sieve plate (200) having a plurality of sieve holes (210) arranged at intervals and leading to the interior of the material receiving container (100); A blocking member (300) is movably arranged on the top of the sieve plate (200), and the blocking member (300) and the sieve plate (200) are combined to form a feeding cavity that can move with the blocking member (300) and has an open top, and the feeding cavity is used to feed the soil sample to be screened; A pressing plate (400), the pressing plate (400) being slidably disposed in the feeding chamber; A pressurizing mechanism, the pressurizing mechanism being used to drive the pressing plate (400) to squeeze the soil sample placed in the feeding cavity; a driving mechanism, the driving mechanism being used to drive the enclosure member (300) to perform linear reciprocating motion in a horizontal direction relative to the screen plate (200); The pressurizing mechanism comprises a first bracket (510), a linear drive device (520) and a pressing portion (530), wherein the linear drive device (520) is arranged on the first bracket (510), and the pressing portion (530) is arranged at the output end of the linear drive device (520) and is located above the pressing plate (400), and the linear drive device (520) is used to drive the pressing portion (530) to move up and down; A roller (600) for transmitting force is provided between the pressure plate (400) and the pressing portion (530); the roller (600) is movably provided on the top of the pressure plate (400); and a blocking portion (410) for preventing the roller (600) from falling is provided at the edge of the pressure plate (400); A pad (700) is provided on the top of the rolling row (600); The sieve plate (200) is detachably connected to the material receiving container (100).

2. The geotechnical test soil sample screening device according to claim 1, characterized in that: The driving mechanism includes a second bracket (810), a driving motor (820) and a first connecting rod (830), wherein the second bracket (810) is arranged on one side of the enclosure (300), the driving motor (820) is arranged on the second bracket (810), the output shaft of the driving motor (820) extends in a horizontal direction, one end of the first connecting rod (830) is fixedly connected to the output shaft of the driving motor (820), and the first connecting rod (830) and the output shaft of the driving motor (820) are perpendicular to each other. The first connecting rod (830) is straight, and the other end of the first connecting rod (830) is provided with a first connecting portion (831), and the side of the enclosure (300) facing the second bracket (810) is fixedly provided with a second connecting rod (310) extending in the horizontal direction, and the end of the second connecting rod (310) away from the enclosure (300) is provided with a second connecting portion (311), and the second connecting portion (311) has a limiting sliding groove (3111) extending in the vertical direction, and the first connecting portion (831) is slidably connected to the limiting sliding groove (3111).

3. The geotechnical test soil sample screening device according to claim 1, characterized in that: Two side plates (220) for guiding are arranged on the screen plate (200) at intervals corresponding to the enclosure (300), and the enclosure (300) is located between the two side plates (220). One of the inner side wall of the side plate (220) and the outer side wall of the enclosure (300) is provided with a guide groove (221), and the other is provided with a slider (320) slidably connected to the guide groove (221).

4. The geotechnical test soil sample screening device according to claim 1, characterized in that: A cutting structure for cutting soil samples is provided on the sieve plate (200) corresponding to the sieve holes (210).

5. The geotechnical test soil sample screening device according to claim 4, characterized in that: The cutting structure comprises a cutting piece (900), each of the sieve holes (210) is provided with the cutting piece (900), the cutting piece (900) is fixedly connected to the top of the sieve plate (200), a gap is provided between the cutting piece (900) and the top surface of the sieve plate (200), the cutting piece (900) at least partially extends to the top of the corresponding sieve hole (210), and the edge of the cutting piece (900) is provided with a cutting edge for cutting soil samples.

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