CN215953152U - Geotechnical double-prismoid-shaped tensile sample consolidation preparation device - Google Patents
Geotechnical double-prismoid-shaped tensile sample consolidation preparation device Download PDFInfo
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- CN215953152U CN215953152U CN202122490980.6U CN202122490980U CN215953152U CN 215953152 U CN215953152 U CN 215953152U CN 202122490980 U CN202122490980 U CN 202122490980U CN 215953152 U CN215953152 U CN 215953152U
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Abstract
The utility model belongs to the field of geotechnical test equipment, and particularly relates to a geotechnical double-frustum-shaped tensile sample consolidation preparation device which comprises an outer cover barrel, a water collecting tank, a mold barrel bottom plate, a sample bearing half mold, a top sleeve, a pressure sample plate, a top cover and a fastening ring, wherein a rotary motor and a rotary motor bin cover are fixedly installed on the inner bottom surface of the outer cover barrel, and the rotary motor is positioned inside the rotary motor bin cover; the output shaft of the rotating motor is fixedly connected with a rotating shaft, the rotating shaft is connected with the water collecting tank, and the water collecting tank bears the mold cylinder bottom plate and the sample bearing mold cylinder formed by two sample bearing mold halves; the top sleeve is sleeved at the top of the sample bearing mold cylinder, a supporting bearing is fixedly mounted at the upper end of the inner wall of the outer cover barrel, and the top sleeve is embedded in the middle of the supporting bearing. The method is used for preparing the double-frustum-shaped tensile sample by consolidation, and has the characteristics of simplicity, easiness in use, high efficiency in drainage and uniform sample preparation.
Description
Technical Field
The utility model belongs to the field of geotechnical test equipment, and particularly relates to a device for solidifying and preparing a geotechnical double-prismatic-table-shaped tensile sample.
Background
In order to test the direct tensile strength of the soil body, a variable cross-section sample which is symmetrical along a middle plane is generally used, but a preparation tool is lacked, a simple double-trapezoid flat plate sample is generally adopted, the boundary condition is not reasonable enough, the uniformity is poor, and therefore a tensile sample which has better symmetry and excellent friction conduction during loading is prepared. On the other hand, the conventional compaction sample preparation method is difficult to ensure the uniformity of the interior of a sample, and is easy to generate excessive disturbance on a soil framework structure, so that the mechanical property of the obtained sample is deviated from that of a normal soil sample, and the slurry solidification method for preparing the sample uniformly prevents slow seepage and low efficiency.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the problems in the prior art, the utility model provides the device for consolidating and preparing the geotechnical double-frustum-shaped tensile sample, which is simple and easy to use, has high drainage efficiency and uniform sample preparation.
(II) technical scheme
In order to achieve the purpose, the utility model adopts the main technical scheme that:
a geotechnical double-prismoid tensile sample consolidation preparation device comprises an outer cover barrel, a water collecting tank, a die cylinder bottom plate, a sample bearing half die, a top sleeve, a sample pressing plate, a top cover and a fastening ring, wherein a rotary motor and a rotary motor bin cover are fixedly installed on the inner bottom surface of the outer cover barrel, and the rotary motor is located inside the rotary motor bin cover; the output shaft of the rotating motor is fixedly connected with a rotating shaft, the rotating shaft is connected with the water collecting tank, and the water collecting tank bears the mold cylinder bottom plate and the sample bearing mold cylinder formed by two sample bearing mold halves; the top sleeve is sleeved at the top of the sample bearing mold cylinder, a supporting bearing is fixedly installed at the upper end of the inner wall of the outer cover barrel, and the top sleeve is embedded in the middle of the supporting bearing; the top of the outer cover barrel is fixedly connected with a top cover joint, the top cover is inserted into the top cover joint, and the fastening ring is in threaded connection with the outer surface of the top cover joint; an air cylinder and an air cylinder chamber cover are fixedly arranged at the center of the outer side of the top cover; the sample pressing plate extends into the top sleeve, and the sample pressing plate is connected with the air cylinder through a loading shaft.
In the geotechnical double-frustum-shaped tensile sample consolidation preparation device, the outer cover barrel is in a hollow cylindrical shape, the top end of the outer cover barrel is closed at the bottom end, the top end of the side wall of the outer cover barrel is opened, the number of top cover joints arranged at the top of the outer cover barrel is six.
In the device for preparing the geotechnical double-frustum-shaped tensile sample by consolidation, the water collecting tank is hollow and cylindrical, the bottom end of the water collecting tank is closed, the top end of the water collecting tank is open, and a plurality of water collecting tank water outlets are uniformly formed in the bottom end of the side wall of the water collecting tank; the die cylinder bottom plate is connected with the water collecting tank through a die cylinder bracket; the bottom plate of the mold cylinder is in a circular plate shape, a circular groove is arranged in the bottom plate of the mold cylinder, and the radius of the groove is the same as the outer diameter of the bottom end of the sample bearing mold cylinder; and a plurality of mold cylinder bottom plate seepage holes are arranged in the grooves in a penetrating manner.
In the device for fixedly preparing the geotechnical double-edge frustum-shaped tensile sample, the inner wall of the sample-bearing half mould is a multi-edge frustum surface, and the outer wall of the sample-bearing half mould is a circular frustum surface; and a plurality of half-mold seepage holes are formed in the side wall of the sample bearing half mold.
In the device for preparing the geotechnical double-prism-shaped tensile sample by consolidation, the top sleeve is cylindrical, a prism through hole is formed in the top sleeve, and the inner section of the top sleeve is consistent with the section of the cavity of the sample bearing mold cylinder; the bottom end of the top sleeve is provided with a circular caulking groove, and the groove diameter of the circular caulking groove is consistent with the outer diameter of the top end of the sample bearing mold cylinder; the pressure sample plate is polygonal, and the section of the pressure sample plate is consistent with that of the inner hole of the top sleeve.
(III) advantageous effects
The utility model has the beneficial effects that: by arranging the sample bearing half-module, a sample bearing mould cylinder with a symmetrical double-frustum-pyramid-shaped sample bearing cavity is formed, and the sample bearing mould cylinder is used for preparing a double-frustum-pyramid-shaped tensile sample with good symmetry and boundary friction, and is convenient for demoulding; by arranging the outer cover barrel, the sample bearing mold barrel, the mold barrel bottom plate, the rotating motor, the top sleeve, the sample pressing plate and the air cylinder, rotation and pressure are simultaneously applied to the soil sample slurry, dehydration and consolidation of the slurry are accelerated, and the sample preparation efficiency is improved; by arranging the water collecting tank, the bottom plate of the overhead die cylinder supports the seeped water, the consolidation rate is improved, and the rotating motor is protected.
Drawings
FIG. 1 is a schematic axial sectional view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is a schematic view of the structure of the water collecting trough and the bottom plate of the mold cylinder;
FIG. 4 is a schematic view of a sample-holding mold half according to the present invention;
FIG. 5 is a schematic view of a top sleeve construction of the present invention;
FIG. 6 is a schematic structural view of a sample pressing plate and a loading device according to the present invention;
FIG. 7 is a schematic view of the structure of the head cover and the cylinder head cover of the present invention.
[ description of reference ]
1. An outer cover barrel; 101. a drain pipe; 102. a support bearing; 103. a header joint; 2. a rotating electric machine bin cover; 3. a rotating electric machine; 301. a rotating shaft; 4. a water collection tank; 401. a die cylinder support; 402. a water outlet of the water collecting tank; 5. a die cylinder base plate; 501. a mold cylinder bottom plate seepage hole; 6. a sample-bearing half-mold; 601. a half-mold seepage hole; 7. a top sleeve; 8. pressing the sample plate; 9. a cylinder; 901. a loading shaft; 10. a top cover; 11. a cylinder chamber cover; 12. and (5) fastening the ring.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
The most key concept of the utility model is as follows: the sample-bearing mold cylinder with a symmetrical double-prism-frustum-shaped sample-bearing cavity is formed by arranging the sample-bearing half mold, the outer cover barrel, the sample-bearing mold cylinder, the mold cylinder bottom plate, the rotating motor, the top sleeve, the sample-pressing plate and the air cylinder are arranged to simultaneously apply rotation and pressure to the soil sample slurry, and the water collecting tank is arranged to make the mold cylinder bottom plate overhead and bear seepage water.
Referring to fig. 1 to 7, a device for consolidating and preparing a geotechnical double-edged frustum-shaped tensile sample comprises an outer cover barrel 1, a water collecting tank 4, a mold barrel bottom plate 5, a sample bearing half mold 6, a top sleeve 7, a sample pressing plate 8, a top cover 10 and a fastening ring 12, wherein a rotating motor 3 and a rotating motor bin cover 2 are fixedly installed on the inner bottom surface of the outer cover barrel 1, and the rotating motor 3 is positioned inside the rotating motor bin cover 2; the output shaft of the rotating motor 3 is fixedly connected with a rotating shaft 301, the rotating shaft 301 is connected with a water collecting tank 4, and the water collecting tank 4 bears a mold cylinder bottom plate 5 and a sample bearing mold cylinder formed by two sample bearing mold halves 6; the top sleeve 7 is sleeved at the top of the sample-bearing mold cylinder, the upper end of the inner wall of the outer cover barrel 1 is fixedly provided with a support bearing 102, and the top sleeve 7 is embedded in the middle of the support bearing 102; the top of the outer cover barrel 1 is fixedly connected with a top cover joint 103, a top cover 10 is inserted on the top cover joint 103, and a fastening ring 12 is in threaded connection with the outer surface of the top cover joint 103; the center of the outer side of the top cover 10 is fixedly provided with an air cylinder 9 and an air cylinder chamber cover 11; the pressure sample plate 8 extends into the top sleeve 7, the pressure sample plate 8 is connected with the cylinder 9 through the loading shaft 901, the top cover 10 is inserted into the top cover joint 103 at the top of the outer cover barrel 1, the loading shaft 901 is ensured to be correctly connected with the cylinder 9, and then the top cover 10 is fixed by the fastening ring 12; switching on a power supply, starting the air cylinder 9, and driving the sample pressing plate 8 to descend to apply consolidation force to the soil sample slurry; and starting the rotating motor 3 to drive the water collecting tank 4, the die cylinder bottom plate 5, the sample bearing die cylinder, the internal soil sample slurry, the top sleeve 7 and the sample pressing plate 8 to integrally rotate around the central shaft so as to accelerate the dehydration and consolidation of the sample by a centrifugal effect.
Specifically, the outer cover barrel 1 is hollow cylindrical, the bottom end is closed, the top end is open, and the bottom end of the side wall of the outer cover barrel 1 is provided with a drain pipe 101; the number of the top cover joints 103 arranged at the top of the outer cover barrel 1 is six.
Specifically, the water collection tank 4 is hollow and cylindrical, the bottom end is closed, the top end is open, and a plurality of water collection tank water outlets 402 are uniformly arranged at the bottom end of the side wall of the water collection tank 4; the die cylinder bottom plate 5 is connected with the water collecting tank 4 through a die cylinder bracket 401; the die cylinder bottom plate 5 is in a circular plate shape, a circular groove is arranged in the die cylinder bottom plate, the radius of the groove is the same as the outer diameter of the bottom end of the sample bearing die cylinder, and nesting can be realized; a plurality of mold cylinder bottom plate seepage holes 501 are arranged in the grooves in a penetrating manner.
Specifically, the inner wall of the sample-bearing half-die 6 is a multi-edge table surface, and the outer wall is a circular table surface; the side wall of the sample bearing half mold 6 is provided with a plurality of half mold seepage holes 601, the rotating motor 3 is started to drive the water collecting tank 4, the mold cylinder bottom plate 5, the sample bearing mold cylinder, the internal soil sample slurry, the top sleeve 7 and the sample pressing plate 8 to integrally rotate around the central shaft, and the sample dehydration and consolidation are accelerated by the centrifugal effect; and (3) when the sample pressing plate 8 descends to a set position, which indicates that the soil sample is solidified, closing the rotating motor 3, closing the air cylinder 9, sequentially taking down the fastening ring 12, the top cover 10, the sample pressing plate 8 and the top sleeve 7, taking out the sample bearing mold cylinder containing the sample, opening the two sample bearing mold halves 6 in half, and taking out the obtained double-pyramid-shaped tensile sample, thereby completing the preparation process.
Specifically, the top sleeve 7 is cylindrical, a prismatic through hole is formed inside the top sleeve, and the inner section of the top sleeve is consistent with the section of a cavity of the sample bearing mold cylinder; the bottom end of the top sleeve 7 is provided with a circular caulking groove, and the groove diameter of the circular caulking groove is consistent with the outer diameter of the top end of the sample bearing mold cylinder; the pressure sample plate 8 is polygonal, and the section of the pressure sample plate 8 is consistent with that of the inner hole of the top sleeve 7.
The concrete implementation steps of the geotechnical double-prismoid tensile sample consolidation preparation device are as follows:
the outer cover barrel 1 is stably placed, and the drain pipe 101 is connected to an overflow pipeline; laying geotechnical filter paper on the mold cylinder bottom plate 5; two sample-bearing half-moulds 6 are combined to form a sample-bearing mould cylinder, geotechnical filter paper is laid on the inner wall of the sample-bearing mould cylinder, and then the sample-bearing mould cylinder is integrally placed in a circular groove of a mould cylinder bottom plate 5; taking the top sleeve 7, downwards sleeving one end containing the circular caulking groove into the support bearing 102 arranged at the upper end of the inner wall of the outer cover barrel 1, and nesting the circular caulking groove at the upper end of the sample bearing mold barrel; pouring the mixed soil sample slurry from the upper part of the top sleeve 7, then sleeving the pressure sample plate 8 into the top sleeve 7, and keeping the loading shaft 901 vertically upward; a top cover 10 is taken and inserted on a top cover joint 103 at the top of the outer cover barrel 1, the loading shaft 901 is ensured to be correctly connected with the air cylinder 9, and then the top cover 10 is fixed by using a fastening ring 12; switching on a power supply, starting the air cylinder 9, and driving the sample pressing plate 8 to descend to apply consolidation force to the soil sample slurry; starting the rotating motor 3 to drive the water collecting tank 4, the mold cylinder bottom plate 5, the sample bearing mold cylinder, the internal soil sample slurry, the top sleeve 7 and the sample pressing plate 8 to integrally rotate around the central shaft, so as to accelerate the dehydration and consolidation of the sample by a centrifugal effect; and (3) when the sample pressing plate 8 descends to a set position, which indicates that the soil sample is solidified, closing the rotating motor 3, closing the air cylinder 9, sequentially taking down the fastening ring 12, the top cover 10, the sample pressing plate 8 and the top sleeve 7, taking out the sample bearing mold cylinder containing the sample, opening the two sample bearing mold halves 6 in half, and taking out the obtained double-pyramid-shaped tensile sample, thereby completing the preparation process.
From the above description, in the present invention, by arranging the sample-holding half-mold 6, a sample-holding mold cylinder with a symmetrical double-frustum-shaped sample-holding cavity is formed, which is used for preparing a double-frustum-shaped tensile sample with good symmetry and boundary friction, and is convenient for demolding; by arranging the outer cover barrel 1, the sample bearing mold barrel, the mold barrel bottom plate 5, the rotating motor 3, the top sleeve 7, the sample pressing plate 8 and the air cylinder 9, rotation and pressure are simultaneously applied to soil sample slurry, dehydration and consolidation of the slurry are accelerated, and the sample preparation speed is improved; through setting up water catch bowl 4, built on stilts die cylinder bottom plate 5 and accept the infiltration water, promote consolidation efficiency and protect rotating electrical machines 3.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (5)
1. The utility model provides a geotechnique's double-edged terrace-shaped tensile sample concreties preparation facilities which characterized in that: the sample-bearing device comprises an outer cover barrel, a water collecting tank, a die cylinder bottom plate, a sample-bearing half die, a top sleeve, a pressure sample plate, a top cover and a fastening ring, wherein a rotating motor and a rotating motor bin cover are fixedly mounted on the inner bottom surface of the outer cover barrel, and the rotating motor is positioned inside the rotating motor bin cover; the output shaft of the rotating motor is fixedly connected with a rotating shaft, the rotating shaft is connected with the water collecting tank, and the water collecting tank bears the mold cylinder bottom plate and the sample bearing mold cylinder formed by two sample bearing mold halves; the top sleeve is sleeved at the top of the sample bearing mold cylinder, a supporting bearing is fixedly installed at the upper end of the inner wall of the outer cover barrel, and the top sleeve is embedded in the middle of the supporting bearing; the top of the outer cover barrel is fixedly connected with a top cover joint, the top cover is inserted into the top cover joint, and the fastening ring is in threaded connection with the outer surface of the top cover joint; an air cylinder and an air cylinder chamber cover are fixedly arranged at the center of the outer side of the top cover; the sample pressing plate extends into the top sleeve, and the sample pressing plate is connected with the air cylinder through a loading shaft.
2. The device for preparing the tensile sample in the shape of the geotechnical double-frustum pyramid according to claim 1, which is characterized in that: the outer cover bucket is hollow cylinder, and the bottom is sealed the top and is opened, outer cover bucket lateral wall bottom is equipped with the drain pipe, the top cap joint quantity that the outer cover bucket top set up is six.
3. The device for preparing the tensile sample in the shape of the geotechnical double-frustum pyramid according to claim 1, which is characterized in that: the water collecting tank is hollow cylindrical, the bottom end of the water collecting tank is closed, the top end of the water collecting tank is open, and a plurality of water collecting tank water outlets are uniformly formed in the bottom end of the side wall of the water collecting tank; the die cylinder bottom plate is connected with the water collecting tank through a die cylinder bracket; the bottom plate of the mold cylinder is in a circular plate shape, a circular groove is arranged in the bottom plate of the mold cylinder, and the radius of the groove is the same as the outer diameter of the bottom end of the sample bearing mold cylinder; and a plurality of mold cylinder bottom plate seepage holes are arranged in the grooves in a penetrating manner.
4. The device for preparing the tensile sample in the shape of the geotechnical double-frustum pyramid according to claim 1, which is characterized in that: the inner wall of the sample bearing half mold is a multi-edge table surface, and the outer wall of the sample bearing half mold is a circular table surface; and a plurality of half-mold seepage holes are formed in the side wall of the sample bearing half mold.
5. The device for preparing the tensile sample in the shape of the geotechnical double-frustum pyramid according to claim 1, which is characterized in that: the top sleeve is cylindrical, a prismatic through hole is formed in the top sleeve, and the inner section of the top sleeve is consistent with the section of the cavity of the sample bearing mold cylinder; the bottom end of the top sleeve is provided with a circular caulking groove, and the groove diameter of the circular caulking groove is consistent with the outer diameter of the top end of the sample bearing mold cylinder; the pressure sample plate is polygonal, and the section of the pressure sample plate is consistent with that of the inner hole of the top sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122490980.6U CN215953152U (en) | 2021-10-16 | 2021-10-16 | Geotechnical double-prismoid-shaped tensile sample consolidation preparation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122490980.6U CN215953152U (en) | 2021-10-16 | 2021-10-16 | Geotechnical double-prismoid-shaped tensile sample consolidation preparation device |
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| Publication Number | Publication Date |
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| CN215953152U true CN215953152U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122490980.6U Active CN215953152U (en) | 2021-10-16 | 2021-10-16 | Geotechnical double-prismoid-shaped tensile sample consolidation preparation device |
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| CN (1) | CN215953152U (en) |
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- 2021-10-16 CN CN202122490980.6U patent/CN215953152U/en active Active
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