CN114414320B - Static pressure rapid sample preparation device for triaxial test, sample preparation method and demolding method - Google Patents
Static pressure rapid sample preparation device for triaxial test, sample preparation method and demolding method Download PDFInfo
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- CN114414320B CN114414320B CN202111453860.7A CN202111453860A CN114414320B CN 114414320 B CN114414320 B CN 114414320B CN 202111453860 A CN202111453860 A CN 202111453860A CN 114414320 B CN114414320 B CN 114414320B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 184
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000005464 sample preparation method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003068 static effect Effects 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims description 24
- 239000002689 soil Substances 0.000 claims description 17
- 230000002706 hydrostatic effect Effects 0.000 claims description 2
- 230000003028 elevating effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000005056 compaction Methods 0.000 description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
The utility model relates to the technical field of civil engineering, and discloses a static pressure rapid sample preparation device for a triaxial test, which is characterized in that: including the carrier platform the top surface of carrier platform is provided with system appearance tool or drawing of patterns tool the top of system appearance tool or drawing of patterns tool is provided with the baffle, the bottom surface of carrier platform links to each other with elevating system, elevating system is used for driving carrier platform up-and-down motion, and then drives system appearance tool or drawing of patterns tool up-and-down motion, realizes contacting or releasing the contact with the baffle, and then realizes layering system appearance or sample drawing of patterns. A sample preparation method and a demoulding method of the static pressure rapid sample preparation device for the triaxial test are also disclosed. The device and the method have the advantages of convenient operation, simple structure, low cost, uniform sample preparation and the like, can realize the effects of good industrial applicability, high efficiency and low maintenance cost, and have obvious scientific research application value.
Description
Technical Field
The utility model relates to the technical field of civil engineering, in particular to a static pressure rapid sample preparation device, a sample preparation method and a demoulding method for triaxial test.
Background
In geotechnical engineering, the tensile, compressive and shear strength of soil is one of the most important mechanical indexes of soil, and research shows that the tensile, compressive and shear strength of soil has close relation with the stability of engineering foundation, foundation pit, side slope, tunnel and other engineering. Therefore, accurately measuring tensile, compressive and shear strengths of the soil becomes very and certainly important; however, in the current geotechnical test, the devices capable of simultaneously measuring the three mechanical indexes of the soil body are few, and the strain control triaxial tester is commonly used for preparing the triaxial sample in the geotechnical test by consulting related documents, consultation and other approaches, but the current triaxial sample preparation device has the defects of complex operation, long time consumption, uneven sample preparation and the like.
The utility model patent with the patent application number 202022613251.0 discloses a pneumatic triaxial sample preparation device, compared with the existing triaxial sample preparation device, the pneumatic triaxial sample preparation device is mainly used for compacting triaxial samples through pneumatic pumps, a method that the traditional triaxial sample preparation device needs manual compaction is replaced, and the main innovation point and practicality are that manual compaction is not needed, and sample preparation time is shortened. However, the traditional three-valve barrel is still adopted for sample preparation in the structure of the sample preparation device, and the traditional mode is still required to be adopted for demoulding in the demoulding mode, so that the innovation is not high; in addition, the sample preparation device adopts a method of unidirectional compaction by a fixed pneumatic pump at the lower end of the sample preparation device, so that the sample preparation method can lead to uneven up-down density of the triaxial sample, and the height of the triaxial sample is difficult to control;
the utility model patent with the patent application number of 202022711023.7 discloses a precession hydraulic dual-purpose triaxial sample preparation device, compared with the existing triaxial sample preparation device, the precession hydraulic dual-purpose triaxial sample preparation device is mainly used for carrying out triaxial sample preparation through an upper precession device, and replaces the traditional triaxial sample preparation method by adopting a manual compaction method; the prepared triaxial sample can be subjected to demoulding by the hydraulic jack at the lower part of the sample preparation device. Overall, the patent saves time compared to conventional triaxial sample preparation methods, and can prepare samples and also release films. However, the sample preparation device described in the patent still has common problems in most similar patents, and adopts a method for preparing samples by unidirectional compaction of the sample preparation device, and the sample preparation method can lead to uneven up-down density of triaxial samples, so that the heights of the triaxial samples are difficult to control;
the patent application No. 202021267178.X discloses a split triaxial sample preparation device, and compared with the existing triaxial sample preparation device, the split triaxial sample preparation device has no much difference in structure, and the conventional three-split triaxial sample preparation device is compacted mainly through a screw-in device instead of a manual compaction method. However, the sample preparation device also has the defects described in the patent, namely, the structure of the sample preparation device still adopts a traditional three-valve barrel for sample preparation, the demoulding mode still needs to adopt a traditional mode for demoulding, and the innovation is not high; in addition, the sample preparation device adopts a method of unidirectional compaction by adopting a fixed screw-in device at the lower end of the sample preparation device, so that the sample preparation method can lead to uneven up-down density of the triaxial sample, and the height of the triaxial sample is difficult to control.
In summary, triaxial test sample preparation is very important, but the existing triaxial sample preparation method has more defects, the main structure of the triaxial sample preparation device still adopts the traditional three-flap sample preparation device, and the whole sample preparation process mainly focuses on shortening the sample preparation time and abandons the uniformity of sample preparation.
Disclosure of Invention
The utility model provides a static pressure rapid sample preparation device, a sample preparation method and a demoulding method for triaxial test, which have the advantages of convenient operation, simple structure, low cost, uniform sample preparation and the like, can meet the requirements of rapid triaxial sample preparation and uniform triaxial sample density, and provide favorable reference and experience for improvement and upgrading of a sample preparation method of a related test instrument in geotechnical engineering.
The utility model can be realized by the following technical scheme:
a quick sample preparation device of static pressure for triaxial test, includes the carrier platform the top surface of carrier platform is provided with system appearance tool or drawing of patterns tool the top of system appearance tool or drawing of patterns tool is provided with the baffle, the bottom surface of carrier platform links to each other with elevating system, elevating system is used for driving carrier platform up-and-down motion, and then drives system appearance tool or drawing of patterns tool up-and-down motion, realizes contacting or releasing the contact with the baffle, and then realizes layering system appearance or sample drawing of patterns.
Further, the system appearance tool is including base, system appearance section of thick bamboo and the system appearance pole of mutually supporting be provided with a plurality of layering poles that the length is different on the system appearance pole, the layering pole is used for restricting the degree of depth that the system appearance pole inserted into a system appearance section of thick bamboo, realizes layering system appearance.
The sample preparation rod comprises a rod part and a plane part, wherein the outer diameter of the rod part is matched with the inner diameter of the sample preparation barrel, a chute is arranged at the end part connected with the plane part along the axial direction, the chute is matched with the layering rod with the largest length and extends to the other end part of the rod part, and part of layering rod is naked and leaked outside the chute and can be propped against the top surface of the sample preparation barrel after being inserted into the sample preparation barrel;
the bottom end of the base can be detachably arranged in a groove on the top surface of the carrying platform, and the top end of the base is matched with the sample preparation cylinder;
the length of the channel inside the sample preparation cylinder and the length of the sample preparation rod are both greater than the length of the sample to be prepared.
Further, the drawing of patterns tool includes the drawing of patterns section of thick bamboo and the drawing of patterns pole of mutually supporting, the internal diameter of drawing of patterns section of thick bamboo is greater than the internal diameter of system appearance section of thick bamboo, the external diameter of drawing of patterns pole is the same with the external diameter of system appearance pole.
Further, elevating system includes a plurality of guide bars, every the guide bar is all worn to carry the thing platform, and its one end is connected with the baffle, and the other end is connected with the base be provided with on the base and exert the mechanism with force, the elevating system's of force is gone up and down to hold and be connected with the bottom surface of carrying the thing platform for drive the thing platform and follow the guide bar up-and-down motion.
Further, base, year thing platform and baffle parallel arrangement, a plurality of guide bars even interval set up between the three, force application mechanism sets up to the jack.
A sample preparation method based on the static pressure rapid sample preparation device for triaxial test, comprising the following steps:
sequentially arranging a base and a sample preparation cylinder on a carrying platform, and then placing a part of soil samples of samples to be prepared into the sample preparation cylinder;
step two, inserting a sample preparation rod into the sample preparation cylinder, starting a force applying mechanism, driving the carrying platform to move upwards, enabling the top surface of the sample preparation jig to abut against the baffle, and continuously driving the carrying platform to move upwards slowly until the layering rod on the sample preparation rod abuts against the top surface of the sample preparation cylinder, so as to finish the first layer of preparation of the sample;
and thirdly, sequentially installing layering rods with the lengths from small to large on the sample preparation rod, repeating the second step, and completing the preparation of the residual layers of the sample to realize layering sample preparation.
A method of demolding a sample preparation method based on the hydrostatic rapid sample preparation device for triaxial test described above, comprising the steps of:
step I, taking off the sample preparation tool which is manufactured in a layering manner from the carrying platform, taking off the sample preparation rod, taking off the base, and sequentially placing the demoulding rod, the overturned sample preparation cylinder and the demoulding cylinder on the carrying platform;
and II, starting a force applying mechanism to drive the carrying platform to move upwards, enabling the top surface of the demoulding cylinder to prop against the baffle, and continuing to drive the carrying platform to move upwards slowly until the demoulding rod completely enters the sample preparation cylinder, so that demoulding of the sample is completed.
The beneficial technical effects of the utility model are as follows:
(1) The multiple layering rods with different lengths are matched with the sample preparation rod, so that the insertion depth of the sample preparation rod into the sample preparation is limited, and the layering sample preparation is completed by combining the lifting mechanism, so that the prepared triaxial sample can be applied with force in a partitioning manner, the stress is uniform as much as possible, the overall density of the triaxial sample is ensured to be more uniform, meanwhile, the demolding jig matched with the triaxial sample is designed, the sample preparation and the demolding can be completed on one piece of equipment, the operation is more convenient, and the applicability is wider;
(2) The lifting platform is simple in integral structure, cost is saved, and sample preparation efficiency is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of a sample preparation rod and its cooperation with a layering rod according to the present utility model;
FIG. 3 is a schematic diagram of the demolding tool and triaxial sample structure of the present utility model;
FIG. 4 is a schematic view of the structure of the base of the present utility model;
the device comprises a 1-carrying platform, a 2-baffle, a 3-guide rod, a 4-base, a 5-base, a 6-sample preparation cylinder, a 7-sample preparation rod, an 8-layering rod, a 9-demoulding cylinder, a 10-demoulding rod, an 11-jack and a 12-triaxial sample.
Detailed Description
The following detailed description of the utility model refers to the accompanying drawings and preferred embodiments.
As shown in fig. 1, the utility model provides a static pressure rapid sample preparation device for a triaxial test, which comprises a carrying platform 1, wherein a sample preparation jig or a demoulding jig is arranged on the top surface of the carrying platform 1, a baffle plate 2 is arranged above the sample preparation jig or the demoulding jig, the bottom surface of the carrying platform 1 is connected with a lifting mechanism, and the lifting mechanism is used for driving the carrying platform 1 to move up and down so as to drive the sample preparation jig or the demoulding jig to move up and down, so that the contact with the baffle plate 2 or the release of the contact are realized, and further the layered sample preparation or the sample demoulding is realized.
Specifically, the lifting mechanism comprises a plurality of guide rods 3, each guide rod 3 penetrates through the carrying platform 1, one end of each guide rod is connected with the baffle plate 2, the other end of each guide rod is connected with the base 4, a force applying mechanism is arranged on the base 4, and the lifting end of the force applying mechanism is connected with the bottom surface of the carrying platform 1 and used for driving the carrying platform 1 to move up and down along the guide rods 3.
In order to ensure the stability of the lifting process, the base 4, the carrying platform 1 and the baffle 2 are arranged in parallel, a plurality of guide rods are uniformly arranged between the base 4, the carrying platform 1 and the baffle 2 at intervals, for example, three guide rods form a lifting platform together, and the force applying mechanism can adopt the jack 11, so that the cost can be reduced, the operation is convenient, and the applicability is relatively strong.
As shown in fig. 1 and 2, the sample preparation jig comprises a base 5, a sample preparation barrel 6 and a sample preparation rod 7 which are matched with each other, wherein a plurality of layering rods 8 with different lengths are arranged on the sample preparation rod 7, the layering rods are used for limiting the depth of the sample preparation rod inserted into the sample preparation barrel to realize layering sample preparation, the length setting of each layering rod 8 can be determined according to practical conditions, so that the uniformity requirement of a triaxial sample is met, and if 1/3L, 2/3L and L represent the length of the sample preparation barrel 6, the triaxial sample can be prepared in three layers.
As shown in fig. 2, the sample preparation rod 7 comprises a rod part and a plane part, the outer diameter of the rod part is matched with the inner diameter of the sample preparation barrel 6, a sliding groove is arranged at the end part connected with the plane part along the axial direction, the sliding groove is matched with the layering rod 8 with the largest length, and extends towards the other end part of the rod part, and part of layering rod 8 is exposed outside the sliding groove, so that after the sample preparation barrel 6 is inserted, the layering rod can be abutted against the top surface of the sample preparation barrel 6, thereby limiting the depth of the rod part entering the sample preparation barrel 6, and a plurality of sliding grooves, such as two sliding grooves with 180 degrees of difference, can be arranged along the radial direction of the sample preparation barrel 6 for balancing the acting force of the layering rod 8 on the sample preparation barrel 6, and two identical layering rods 8 are installed each time; the plane part can provide a stress contact surface with the baffle plate 2, so that acting force is conveniently transmitted from the rod part to the soil sample of the sample to be prepared in the sample preparation cylinder 6, and the soil sample is compacted, so that the layered sample preparation of the triaxial sample is completed.
As shown in fig. 4, the bottom end of the base 5 can be detachably arranged in a groove on the top surface of the carrying platform 1, the top end is matched with the sample preparation barrel 6, the cavity of the groove is matched with the shape of the base 5, the top end of the base 5 can be provided with a protrusion matched with the internal channel of the sample preparation barrel 6, the height of the protrusion is far smaller than the length of the channel, the positioning function is only realized, and a notch matched with the outer diameter of the sample preparation barrel 6 can also be arranged at the top end of the base 5, and the positioning function is also only realized.
Considering that the soil sample of the sample to be prepared has a larger volume before being compacted, the length of the channel inside the sample preparation cylinder 6 and the length of the sample preparation rod 7 are both larger than the length of the sample to be prepared, however, more than one length can be transferred to the base 5, namely, a notch is arranged at the center of the top end of the base 5, and the size and the position of the notch are consistent with those of the channel inside the sample preparation cylinder 6, so that the soil sample with the volume larger than that of the prepared triaxial sample can be loaded.
As shown in fig. 3, the demolding jig comprises a demolding cylinder 9 and a demolding rod 10 which are matched with each other, wherein the inner diameter of the demolding cylinder 9 is larger than the inner diameter of the sample preparation cylinder 6, and the outer diameter of the demolding rod 10 is the same as the outer diameter of the sample preparation rod 7.
The utility model also provides a sample preparation method and a demoulding method based on the static pressure rapid sample preparation device for the triaxial test, which are specifically as follows:
preparing a sample:
i, weighing and manufacturing a complete triaxial sample 12 according to test requirements, and equally dividing the soil sample into three parts for later use;
II, wiping off sundries on the sample preparation cylinder 6, the sample preparation rod 7, the demoulding cylinder 9, the base 5, the layering rod 8, the grooves on the sample preparation rod 7 and the demoulding rod 10, and wiping off a proper amount of vaseline to ensure that the metal components are clean and smooth;
III, checking the working condition of the hydraulic jack 11, and avoiding oil leakage of the jack 11.
Sample preparation operation:
firstly, arranging a base 5 and a sample preparation cylinder 6 on a carrying platform 1 in sequence, and then placing a part of soil samples of samples to be prepared into the sample preparation cylinder 6, for example, 1/3 of the soil samples;
step two, inserting the sample preparation rod 7 into the sample preparation barrel 6, starting a force applying mechanism, driving the carrying platform 1 to move upwards to enable the top surface of the sample preparation jig to abut against the baffle plate 2, and continuously driving the carrying platform 1 to move upwards slowly until the layering rod 8 on the sample preparation rod 7 abuts against the top surface of the sample preparation barrel 6, so as to finish the first layer of sample preparation;
and thirdly, sequentially installing the layering rods 8 with the lengths from small to large on the sample preparation rod 7, repeating the second step, and completing the preparation of the residual layers of the samples to realize layering sample preparation.
Specifically, first, the sample rod 7 in the last step of the first layer is taken out, and 1/3 triaxial sample 12 in the sample tube 6 is scraped with tweezers; then, adding another prepared soil sample into the sample preparation cylinder 6 according to the previous operation; then, 1/3L of the layering rod 8 is installed in the sliding grooves on two sides of the sample preparation rod 7 (next, the sample preparation rod 7 with the sleeved layering rod 8 is inserted into the sample preparation barrel 6; finally, the loading platform 1 is driven by the force applying mechanism to ascend until the layering rod on the sample preparation rod 7 abuts against the top surface of the sample preparation barrel 6, and at the moment, 2/3 of the height of the complete triaxial sample 12 is prepared, namely, a second layer of the triaxial sample 12 is layered;
then, the sample rod 7 in the last step of the second layer is taken out, and 2/3 triaxial sample 12 in the sample cylinder 6 is scraped by forceps; then, adding the last prepared soil sample into the sample preparation cylinder 6 according to the previous operation; then, 2/3L of the layering rod 8 is mounted in the sliding grooves on both sides of the sample preparation rod 7 (next, the sample preparation rod 7 with the sleeved layering rod 8 is inserted into the sample preparation barrel 6, and finally, the force applying mechanism drives the carrying platform 1 to ascend until the layering rod on the sample preparation rod 7 abuts against the top surface of the sample preparation barrel 6, and a complete triaxial sample 12, namely a third layer of the triaxial sample 12 layering is prepared.
Demolding:
step I, taking off the sample preparation jig after layered manufacturing from the carrying platform 1, firstly taking off the sample preparation rod 7, then taking off the base 5, and then sequentially placing the demoulding rod 10, the overturned sample preparation cylinder 6 and the demoulding cylinder 9 on the carrying platform 1;
step II, starting a force applying mechanism to drive the carrying platform 1 to move upwards so that the top surface of the demoulding cylinder 9 is propped against the baffle plate, and then continuing to drive the carrying platform 1 to move upwards slowly until the demoulding rod 10 completely enters the sample preparation cylinder 6, so that demoulding of the sample is completed;
because the length of the sample preparation barrel 6 is greater than that of the triaxial sample, the corresponding channel at the bottom of the sample preparation barrel 6 after overturning is not filled with the soil sample, and a section of demoulding rod 10 can be just placed in the left space, so that the guiding effect is achieved on the follow-up demoulding operation, and the demoulding is more convenient.
And III, putting down the carrying platform 1 by utilizing a force applying mechanism, sequentially taking down the demoulding cylinder 9, the triaxial sample 12, the sample preparation cylinder 6 and the demoulding rod 10, cleaning sundries on the sample preparation jig and the demoulding jig, and facilitating the next sample preparation.
Note that: the sample preparation cylinder 6 is needed to be propped by hand just before the three-axis sample 12 is completely released, so that the sample preparation cylinder 6 is prevented from falling off at the moment of pushing out the three-axis sample 12.
While particular embodiments of the present utility model have been described above, it will be appreciated by those skilled in the art that these are merely illustrative, and that many changes and modifications may be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims.
Claims (2)
1. A quick sample preparation device of static pressure for triaxial test, its characterized in that: the device comprises a carrying platform, wherein a sample preparation jig or a demolding jig is arranged on the top surface of the carrying platform, a baffle is arranged above the sample preparation jig or the demolding jig, the bottom surface of the carrying platform is connected with a lifting mechanism, and the lifting mechanism is used for driving the carrying platform to move up and down so as to drive the sample preparation jig or the demolding jig to move up and down, so that the sample preparation jig or the demolding jig is contacted with the baffle or released from the baffle, and further layered sample preparation or sample demolding is realized;
the sample preparation jig comprises a base, a sample preparation barrel and a sample preparation rod which are matched with each other, wherein a plurality of layering rods with different lengths are arranged on the sample preparation rod, and the layering rods are used for limiting the depth of the sample preparation rod inserted into the sample preparation barrel so as to realize layering sample preparation;
the demolding jig comprises a demolding cylinder and a demolding rod which are matched with each other, wherein the inner diameter of the demolding cylinder is larger than that of the sample preparation cylinder, and the outer diameter of the demolding rod is the same as that of the sample preparation rod;
a sample preparation method of a static pressure rapid sample preparation device for a triaxial test comprises the following steps:
sequentially arranging a base and a sample preparation cylinder on a carrying platform, and then placing a part of soil samples of samples to be prepared into the sample preparation cylinder;
step two, inserting a sample preparation rod into the sample preparation cylinder, starting a force applying mechanism, driving the carrying platform to move upwards, enabling the top surface of the sample preparation jig to abut against the baffle, and continuously driving the carrying platform to move upwards slowly until the layering rod on the sample preparation rod abuts against the top surface of the sample preparation cylinder, so as to finish the first layer of preparation of the sample;
step three, sequentially mounting layering rods with the lengths from small to large on a sample preparation rod, repeating the step two, completing the preparation of the rest layers of the sample, and realizing layering sample preparation;
the demolding method of the sample preparation method of the static pressure rapid sample preparation device for the triaxial test comprises the following steps of:
step I, taking off the sample preparation tool which is manufactured in a layering manner from the carrying platform, taking off the sample preparation rod, taking off the base, and sequentially placing the demoulding rod, the overturned sample preparation cylinder and the demoulding cylinder on the carrying platform;
step II, starting a force applying mechanism to drive the carrying platform to move upwards, enabling the top surface of the demoulding cylinder to prop against the baffle, and then continuing to drive the carrying platform to move upwards slowly until the demoulding rod completely enters the sample preparation cylinder, so that demoulding of the sample is completed;
the sample preparation rod comprises a rod part and a plane part, wherein the outer diameter of the rod part is matched with the inner diameter of the sample preparation barrel, a chute is arranged at the end part connected with the plane part along the axial direction, the chute is matched with the layering rod with the largest length and extends to the other end part of the rod part, and part of layering rod is naked and leaked outside the chute and can be propped against the top surface of the sample preparation barrel after being inserted into the sample preparation barrel;
the bottom end of the base can be detachably arranged in a groove on the top surface of the carrying platform, and the top end of the base is matched with the sample preparation cylinder;
the length of the channel inside the sample preparation cylinder and the length of the sample preparation rod are both greater than the length of the sample to be prepared;
the lifting mechanism comprises a plurality of guide rods, each guide rod penetrates through the carrying platform, one end of each guide rod is connected with the baffle, the other end of each guide rod is connected with the base, the base is provided with a force applying mechanism, and the lifting end of the force applying mechanism is connected with the bottom surface of the carrying platform and used for driving the carrying platform to move up and down along the guide rods.
2. The hydrostatic rapid prototyping apparatus for triaxial test according to claim 1, characterized in that: the base, the carrying platform and the baffle are arranged in parallel, the guide rods are uniformly arranged between the base, the carrying platform and the baffle at intervals, and the force applying mechanism is a jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111453860.7A CN114414320B (en) | 2021-12-01 | 2021-12-01 | Static pressure rapid sample preparation device for triaxial test, sample preparation method and demolding method |
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| CN202111453860.7A CN114414320B (en) | 2021-12-01 | 2021-12-01 | Static pressure rapid sample preparation device for triaxial test, sample preparation method and demolding method |
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| CN114414320B true CN114414320B (en) | 2023-11-24 |
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