CN210741971U - Standard remolding soil sample bidirectional sample pressing device - Google Patents
Standard remolding soil sample bidirectional sample pressing device Download PDFInfo
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- CN210741971U CN210741971U CN201921667435.6U CN201921667435U CN210741971U CN 210741971 U CN210741971 U CN 210741971U CN 201921667435 U CN201921667435 U CN 201921667435U CN 210741971 U CN210741971 U CN 210741971U
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Abstract
The utility model discloses a two-way appearance device that presses of soil sample is remolded to standard, including base and upper portion fixed platform, be connected by the reaction frame between base and the upper portion fixed platform. The center department of upper portion fixed platform is provided with vertical decurrent last electric putter, and the center department of base is provided with vertical decurrent lower electric putter, and upper and lower electric putter is on a straight line with the center of system appearance section of thick bamboo, all is provided with the required adapter of electric putter and switch and speed controller on upper portion fixed platform and the base. The middle part of the reaction frame is provided with a sample preparation cylinder fixing platform parallel to the upper fixing platform, a stainless steel sample cylinder is fixedly arranged on the platform, the upper part and the lower part of the stainless steel sample cylinder are provided with limiting plugs, the inner wall of the stainless steel sample cylinder is polished, the device can simultaneously compact the upper surface and the lower surface of the soil sample, the influence of friction between the stainless steel sample cylinder and the soil sample is reduced, and the soil sample can be remolded according to the standard with the same structure, uniform density and minimum demoulding loss.
Description
Technical Field
The utility model relates to a geotechnical test technical field, concretely relates to standard remolded soil sample two-way pressure appearance device.
Background
In recent years, the construction of infrastructure in China enters an unprecedented new stage, namely, super projects of a batch of high-difficulty technologies such as three gorges dam, a longitudinal and transverse highway network, a Gangzhu Australian bridge and the like, and basic projects such as ultra-large deep foundation pit excavation in various municipal constructions. Both super-engineering of high-difficulty technology and intricate underground space engineering need to be built on rock-soil mass, which is the so-called reason that the foundation is not firmly rocked. The stress characteristic and the ultimate strength of the rock-soil mass are the first problems faced by these projects, and various safe and stable infrastructures can be built only by solving the problem of good foundation of the rock-soil mass. To research the safety and stability of foundation, the field and indoor test research must be carried out on the rock-soil body, and the most important experimental equipment for the indoor test of mechanical properties and strength of rock-soil is various triaxial test instruments, such as static triaxial, dynamic triaxial and dynamic single shear. Due to the heterogeneity and heterogeneity of the soil body, and the high cost of the in-situ test, sometimes it is necessary to eliminate other factors affecting the soil mechanical properties, such as structure and anisotropy, which means that it is necessary to make the rock and soil retrieved on site into isotropic remolded soil samples for testing, and in order to ensure the comparability of the test data, the prepared samples must meet the requirements of the same structure and uniform density, which depends on the adopted sample preparation equipment and method to a great extent. According to the national geotechnical test regulations, the density of the prepared remolded soil sample needs to be strictly controlled so as to ensure the repeatability requirement of parallel test data. The traditional preparation method for remolding the soil sample adopts a layering compaction method or a layering compaction method, and the method has the defects that the actual compaction energy difference of each layer of soil is large, and the uniformity of the soil sample is difficult to control accurately. How this paper just prepares the cylindrical remolding soil sample of high accuracy that satisfies three axle class instruments needs and carries out the design of system appearance instrument, better solution experimental soil sample structure unified and the even problem of density.
The sample preparation method which is common indoors comprises a compaction method and a pressing method, but the sample preparation method has the following main defects: (1) the compaction is carried out manually, the compaction counting is easy to make mistakes, and each layer is difficult to control to obtain the same energy by adopting a soil sample for compaction; (2) scraping hairs between every two layers of soil, wherein the uneven connection among the layers is caused by the uneven depth and position of the scraping hairs, and the density among the layers is still different due to the different compaction energy; in summary, it is difficult to ensure that a batch of samples have the same structure and uniform density by the compaction method and the pressing method.
Also as in chinese patent publication No.: CN207600815U, grant open date: 2018.07.10, the utility model discloses a dual compression soil sample preparation facilities, the dual compression soil sample preparation facilities who discloses in this application has set up casting die and pushing down the piece, but in fact the casting die can only be through adjusting upper and lower position restriction soil sample rebound, can not play the effect of initiatively exerting pressure to the soil sample. In actual operation, the friction force between the sample and the sample preparation cylinder is large, so that the hydraulic pressure of the lower part is reduced greatly when the hydraulic pressure is transmitted to the middle-upper part, the pressed sample has a plurality of air holes at the position of the middle-upper part, so that the density of the prepared sample at the middle-upper part cannot meet the requirement of the test, and the soil sample is evenly divided into three parts by three times according to the mass in the pressing process of the patent.
SUMMERY OF THE UTILITY MODEL
The utility model provides a remolding soil sample structure that preparation that prior art exists inequality with the inhomogeneous problem of density, provide a standard remolding two-way pressure appearance device of soil sample, can prepare out the making devices that remold soil sample that the structure is the same, density is even when it is used to the preparation satisfies that the structure that geotechnical test rule required is the same, density is even and not receive the high quality remold soil sample of human factor influence.
The utility model discloses a following technical scheme realizes:
the utility model provides a two-way appearance device of pressing of standard remolding soil sample, includes base and upper portion fixed platform, be connected by the reaction frame between base and the upper portion fixed platform. An upper electric push rod which is vertically downward is arranged at the center of the upper fixing platform, and a lower electric push rod which is vertically upward is arranged at the center of the base. The upper electric push rod is vertically opposite to the lower electric push rod, an upper electric push rod adapter, an upper electric push rod switch, a speed controller and an upper 24V direct current motor are arranged on the upper fixing platform, the upper electric push rod switch controller is used for controlling starting, stopping and speed of the upper electric push rod, the upper electric push rod adapter is used for matching voltage of the upper electric push rod direct current motor, and the upper 24V direct current motor provides downlink power for the upper electric push rod. The base is provided with a lower electric push rod adapter, a lower electric push rod switch, a speed controller and a lower 24V direct current motor, the lower electric push rod switch controller is used for controlling starting and stopping and speed of the lower electric push rod, the lower electric push rod adapter is used for matching voltage of the direct current motor of the lower electric push rod, and the lower 24V direct current motor provides uplink power for the lower electric push rod. The middle part of the reaction frame is provided with a stainless steel sample cylinder fixing platform parallel to the upper fixing platform, the platform and the reaction frame are fixed through a holding ring, and the stainless steel sample cylinder fixing platform can be adjusted up and down through the holding ring. The stainless steel sample tube fixing platform is fixedly provided with a stainless steel sample tube, the upper portion of the stainless steel sample tube is provided with an upper limiting trapezoidal plug, and the lower portion of the stainless steel sample tube is provided with a lower limiting trapezoidal plug.
Further, a two-way appearance device that presses of soil sample is remolded to standard, a nonrust steel sample section of thick bamboo is formed by last sleeve and lower sleeve combination, lower telescopic external diameter is greater than telescopic external diameter, it is provided with the same internal diameter with lower sleeve to go up the sleeve, it is provided with the screw thread to go up telescopic lower part, it has the round hole the same with last sleeve external diameter to open on the nonrust steel sample section of thick bamboo fixed platform, the last sleeve of system sample section of thick bamboo passes the round hole on the nonrust steel sample section of thick bamboo fixed platform by the below of system sample section of thick bamboo fixed platform, the last sleeve of nonrust steel sample section of thick bamboo is fastened on nonrust steel sample section of thick bamboo fixed platform by the screw thread assorted fastening nut rather than setting up.
Furthermore, the two-way pressure appearance device of soil sample is remolded to standard, go up electric putter, lower electric putter, system appearance section of thick bamboo, go up trapezoidal end cap of spacing, the geometric centre of trapezoidal end cap of spacing down and lie in same vertical line to guarantee in-process using and suppressing soil sample, can make the soil sample upper and lower face only bear the effect of pressure stress, do not produce any eccentric load, more can not take place soil sample compaction inhomogeneous because of the electric putter is uneven to the thrust of soil sample.
Further, a two-way pressure appearance device of soil sample is remolded to standard, be provided with 50mm filter paper in the system appearance section of thick bamboo between soil sample and the trapezoidal end cap of upper limit position, the trapezoidal end cap of lower limit position, set up filter paper and both can effectively prevent trapezoidal spacing end cap and soil sample direct contact and take place the bonding.
Further, a two-way pressure appearance device of soil sample is remolded to standard, go up trapezoidal end cap of spacing, down trapezoidal end cap of spacing comprises cylindrical base and cylinder, the diameter of cylindrical base is greater than the diameter of cylindrical barrel, and the diameter of cylinder is: 49.8mm, length: 50mm, the height of the sample preparation cylinder is 200mm, and the size of the pressed soil sample is standard size: diameter 50mm, high 100mm, the diameter of the cylindrical barrel on the spacing end cap slightly is lighter than the internal diameter of a system appearance section of thick bamboo, and the purpose of design is outside the stainless steel system appearance section of thick bamboo of gap discharge between spacing end cap and the system appearance section of thick bamboo in order to make the gas that contains in the soil sample at the in-process of suppression, no longer need design the exhaust hole on a stainless steel system appearance section of thick bamboo.
Further, a two-way pressure appearance device of soil sample is remolded to standard, electric putter on-off speed controller (8) and electric putter on-off and speed controller (10) can adjust the speed of promotion of going up electric putter and electric putter down, and the control range of no-load speed is: the same operation speed of the electric push rod is kept in the preparation process of a batch of samples between 0.5mm and 3m, and the preparation of the soil sample is recommended under the working condition that the no-load speed is 0.5mm/s, so that the pressed soil sample has a compact structure and uniform density.
Further, the standard remolding soil sample bidirectional sample pressing method comprises the following steps:
(1) crushing the clay or the silt near the plastic limit water content after passing through a sieve of 1mm or drying to eliminate the initial anisotropy of the soil;
(2) measuring the water content omega of the soil by using a drying method, and then measuring the water content omega according to rhodCalculating the mass m of the remolded soil required to be filled according to the required dry density and water content, wherein rhodIs the dry density of the standard soil sample, m is the total mass of the soil sample, and V is the total volume of the soil sample;
(3) adjusting a lower electric push rod to enable the top of a lower limit trapezoidal plug (the inner depth is 50mm, and the diameter is 49.8mm) to just enter a stainless steel sample cylinder, and placing standard 50mm filter paper on the top of the plug when the lower limit trapezoidal plug enters the stainless steel sample cylinder;
(4) the method comprises the following steps of (1) loading a soil sample with the weighed mass m into a stainless steel sample cylinder with the diameter of 50mm and the height of 200mm at one time, and estimating the difference value between the initial volume of the filled soil and the volume of the stainless steel sample cylinder, wherein the filling is carried out by slightly compacting a thin iron wire until the filling is leveled to the upper edge of the sample cylinder according to the actual situation when the one-time filling is not completed;
(5) after the remolded soil is filled, 50mm filter paper is placed on the upper surface of the remolded soil, and then the upper limit trapezoidal plug is placed on the filter paper;
(6) adjusting the upper electric push rod to enable the upper electric push rod to be just contacted with the upper limit trapezoidal plug, adjusting a switching speed controller of the upper electric push rod and the lower electric push rod to enable the no-load speed of the upper electric push rod and the lower electric push rod to be controlled at 0.5mm/s before the soil sample is compressed, and marking the position of a speed corresponding to the speed of a switch and a speed controller knob;
(7) the upper and lower electric push rods push the upper and lower limit trapezoidal plugs to be completely stopped at the edge openings of the stainless steel sample cylinder through the wireless remote control switch and the remote control receiver, the load of the motor is suddenly increased, the motor automatically stops working, and the soil sample is solidified for 30 minutes; on the upper part
(8) Adjusting an upper electric push rod to enable the upper electric push rod to return to an original state, taking down a limit plug at the upper part, adjusting a lower electric push rod, taking down a trapezoid plug at the lower limit, putting a polishing cylinder with the diameter of 49.8mm and the height of 50mm into a stainless steel sample cylinder from the lower part, then adjusting the lower electric push rod to enable the lower electric push rod to be in contact with the cylinder and move upwards together, controlling the speed of the lower electric push rod to be 0.5mm/s, pushing out a soil sample from the sample preparation cylinder, stopping the lower electric push rod when the bottom of the soil sample is seen, taking out the soil sample, recovering the equipment to the original state to prepare the next soil sample, wherein the standard soil sample is uniform in density and.
To sum up, the utility model discloses a following beneficial effect:
1. the utility model relates to a two-way pressure appearance device of soil sample is remolded to standard, both ends through making a kind of section of thick bamboo set up electric putter respectively, and electric putter, a stainless steel appearance section of thick bamboo, the geometric center of spacing end cap is located same vertical line, make the top of soil sample receive the effect of spacing trapezoidal end cap and the effect of spacing trapezoidal end cap down with the bottom of soil sample, make the soil sample compress perpendicularly in a stainless steel appearance section of thick bamboo, and like this, carry out dual compression to the bottom surface and the top surface of soil sample, the influence of friction between a system kind of section of thick bamboo and the soil sample has been reduced, thereby the soil sample structure of suppression out is the same, density is even.
2. The utility model relates to a two-way pressure appearance device of soil sample is remolded to standard can once only suppress out standard soil sample through the device and this method, and the suppression time of whole suppression process, suppression speed can accomplish in unison completely, have avoided the error of the experimental data that system appearance brought, and the structure of suppression device is fairly simple, and occupation space is less, is suitable for at indoor preparation soil sample.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure sample making cylinder of the present invention.
Reference numbers and corresponding part names in the drawings:
1-upper fixed platform, 2-base, 3-reaction frame, 4-sample making barrel, 5-upper electric push rod, 6-lower electric push rod, 7-upper electric push rod adapter, 8-upper electric push rod switch and speed controller, 9-lower electric push rod adapter, 10-lower electric push rod switch and speed controller, 11-upper 24V direct current motor, 12-lower 24V direct current motor, 13-fastening nut, 14-upper limit trapezoidal plug, 15-sample making barrel fixed platform, 16-lower limit trapezoidal plug, 41-upper sleeve, 42-lower sleeve and 43-thread.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Examples
As shown in fig. 1-2, a standard remolded soil sample bidirectional sample pressing device comprises a base 2 and an upper fixing platform 1, and is characterized in that the base 2 is connected with the upper fixing platform 1 through a reaction frame 3. The center of the upper fixing platform 1 is provided with an upper electric push rod 5 which is vertically downward, the center of the base 2 is provided with a lower electric push rod 6 which is vertically upward, and the upper electric push rod 5 is vertically opposite to the lower electric push rod 6. An upper electric push rod adapter 7, an upper electric push rod switch and speed controller 8 and an upper 24V direct current motor 11 are arranged on the upper fixing platform 1, the upper electric push rod switch and speed controller 8 is used for controlling starting, stopping and speed of the upper electric push rod 5, the upper electric push rod adapter 7 is used for matching voltage of the direct current motor of the upper electric push rod 5, and the upper 24V direct current motor 11 provides downlink power for the upper electric push rod 5. A lower electric push rod adapter 9, a lower electric push rod switch and speed controller 10 and a lower 24V direct current motor 12 are arranged on the base 2, the lower electric push rod switch and speed controller 10 is used for controlling the starting, the stopping and the speed of the lower electric push rod 6, and the lower electric push rod is used for controlling the starting, the stopping and the speed of the lower electric push rod 6The push rod adapter 9 is used for matching the voltage of the direct current motor of the lower electric push rod 6, and the lower 24V direct current motor 12 provides upward power for the lower electric push rod 6. The middle part of the reaction frame 3 is provided with a stainless steel sample cylinder fixing platform 15 parallel to the upper fixing platform 1, a stainless steel sample cylinder 4 is fixedly arranged on the sample cylinder fixing platform 15, the upper part of the stainless steel sample cylinder 4 is provided with an upper limiting trapezoidal plug 14, and the lower part of the stainless steel sample cylinder 4 is provided with a lower limiting trapezoidal plug 16. The system appearance section of thick bamboo 4 is formed by upper sleeve 41 and lower sleeve 42 combination, the external diameter of lower sleeve 42 is greater than the external diameter of upper sleeve 41, upper sleeve 41 is provided with the same internal diameter with lower sleeve 42, the lower part of upper sleeve 41 is provided with screw thread 43, it has the round hole the same with upper sleeve 41 external diameter to open on the stainless steel appearance section of thick bamboo fixed platform 15, the round hole on the stainless steel appearance section of thick bamboo fixed platform 15 is passed by the below of stainless steel appearance section of thick bamboo fixed platform 15 to the upper sleeve 41 of stainless steel appearance section of thick bamboo 4, and later the upper sleeve 41 of stainless steel appearance section of thick bamboo 4 is fastened on stainless steel appearance section of thick bamboo fixed platform 15 by nut 13 with screw thread 43 assorted. The geometric centers of the upper electric push rod 5, the lower electric push rod 6, the sample preparation barrel 4, the upper limit trapezoidal plug 14 and the lower limit trapezoidal plug 16 are positioned on the same vertical line. All be provided with filter paper between soil sample and the trapezoidal end cap 14 of upper limit position, the trapezoidal end cap 16 of lower limit position in the stainless steel sample section of thick bamboo 4, the size diameter of filter paper is: 50 mm. Go up trapezoidal end cap 14 of spacing, down trapezoidal end cap 16 of spacing comprises cylindrical base and cylinder, the diameter of cylindrical base is greater than the diameter 3mm of cylindrical barrel, and the diameter of cylinder is: 49.8mm, length: 50 mm. Go up electric putter switch speed controller (8) and electric putter switch and speed controller (10) down can adjust the pushing speed of last electric putter 5 and electric putter 6 down, and the control range of speed is: 0.5mm-3 mm. The method comprises the following steps: crushing the clay or the silt near the plastic limit water content after passing through a sieve of 1mm or drying to eliminate the initial anisotropy of the soil; measuring the water content omega of the soil by using a drying method, and then measuring the water content omega according to rhodCalculating the mass m of the remolded soil required to be filled according to the required dry density and water content, wherein rhodIs the dry density of the standard soil sample, m is the total mass of the soil sample, and V is the total volume of the soil sample; adjusting the lower electric push rod 6 to ensure that the top of the lower limit trapezoidal plug 16 (with the inner depth of 50mm and the diameter of 49.8mm) just enters the stainless steel sample cylinder 4, and placing filter paper with the diameter of 50mm on the top of the lower limit trapezoidal plug 16 when entering the stainless steel sample cylinder 4; the method comprises the following steps of (1) loading a soil sample with the weighed mass m into a sample preparation cylinder 4 with the diameter of 50mm and the height of 200mm at one time, estimating the difference value between the initial volume of the filled soil and the volume of a stainless steel sample cylinder (4), and slightly compacting by using a thin iron wire until the soil sample is leveled to the upper edge of the stainless steel sample cylinder 4 according to the actual situation when the one-time filling is not completed; after the remolded soil is filled, 50mm filter paper is placed on the upper surface of the remolded soil, and then the upper limit trapezoidal plug 14 is placed on the upper surface; adjusting the upper electric push rod 5 to just contact with the upper limiting trapezoidal plug 14, and adjusting the switches and the speed controllers of the upper and lower electric push rods to control the no-load speed of the electric push rod to be 0.5mm/s before the soil sample is compressed; the upper electric push rod and the lower electric push rod simultaneously push the upper limit trapezoidal plug and the lower limit trapezoidal plug by adjusting an electric push rod switch and a speed controller, the upper limit trapezoidal plug and the lower limit trapezoidal plug are completely stopped at the position of the edge of the sample preparation cylinder 4, the load of a motor is suddenly increased, the motor automatically stops working, and the soil sample is solidified for 30 minutes; adjusting the upper electric push rod 5 to return to the original state, and taking down the upper limit trapezoidal plug 14; adjusting a lower electric push rod, taking down a lower limit trapezoidal plug 16, putting a polishing cylinder with the diameter of 49.8mm and the height of 50mm into a stainless steel sample cylinder 4 from the lower part, adjusting a lower electric push rod 6 to enable the polishing cylinder to be in contact with the cylinder and move upwards together, pushing out a soil sample from the stainless steel sample cylinder 4, stopping the lower electric push rod 6 when the bottom of the soil sample is seen, taking out the soil sample, recovering the equipment to an initial state to prepare the next soil sample, wherein the standard soil sample has uniform density and extremely small interference.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A standard remolded soil sample bidirectional sample pressing device comprises a base (2) and an upper fixing platform (1), and is characterized in that the base (2) is connected with the upper fixing platform (1) through a reaction frame (3), an upper electric push rod (5) which is vertically downward is arranged at the center of the upper fixing platform (1), a lower electric push rod (6) which is vertically upward is arranged at the center of the base (2), the upper electric push rod (5) is vertically opposite to the lower electric push rod (6), an upper electric push rod adapter (7), an upper electric push rod switch and speed controller (8) and an upper 24V direct current motor (11) are arranged on the upper fixing platform (1), the upper electric push rod switch and speed controller (8) are used for controlling the starting, stopping and the speed of the upper electric push rod (5), and the upper electric push rod adapter (7) is used for matching the voltage of the upper 24V direct current motor (11) of the upper electric push rod (5), the upper 24V direct current motor (11) provides downlink power for the upper electric push rod (5), the base (2) is provided with a lower electric push rod adapter (9), a lower electric push rod switch and speed controller (10) and a lower 24V direct current motor (12), the lower electric push rod switch and speed controller (10) is used for controlling the starting, stopping and speed of the lower electric push rod (6), the lower electric push rod adapter (9) is used for matching the voltage of the lower 24V direct current motor (12) of the lower electric push rod (6), the lower 24V direct current motor (12) provides uplink power for the lower electric push rod (6), the middle part of the reaction frame (3) is provided with a sample making cylinder fixing platform (15) parallel to the upper fixing platform (1), a stainless steel sample making cylinder (4) is fixedly arranged on the sample making cylinder fixing platform (15), the upper part of the stainless steel sample cylinder (4) is provided with an upper limit trapezoidal plug (14), the lower part of the stainless steel sample cylinder (4) is provided with a lower limiting trapezoidal plug (16).
2. A standard remolding soil sample bidirectional pressing device according to claim 1, the stainless steel sample cylinder (4) is formed by combining an upper sleeve (41) and a lower sleeve (42), the outer diameter of the lower sleeve (42) is larger than that of the upper sleeve (41), the upper sleeve (41) and the lower sleeve (42) are provided with the same inner diameter, the lower part of the upper sleeve (41) is provided with threads (43), the sample preparation cylinder fixing platform (15) is provided with a round hole with the same outer diameter as the upper sleeve (41), the upper sleeve (41) of the stainless steel sample cylinder (4) penetrates through a round hole in the sample cylinder fixing platform (15) from the lower part of the sample cylinder fixing platform (15), and then the upper sleeve (41) of the stainless steel sample cylinder (4) is fastened on the sample cylinder fixing platform (15) through a fixing nut (13) matched with the thread (43).
3. A standard remolding soil sample bidirectional pressing device according to claim 1, wherein the geometric centers of the upper electric push rod (5), the lower electric push rod (6), the stainless steel sample cylinder (4), the upper limit trapezoidal plug (14) and the lower limit trapezoidal plug (16) are located on the same vertical line.
4. A standard remolding soil sample bidirectional pressing device according to claim 1, wherein filter paper is arranged between the soil sample in the stainless steel sample cylinder (4) and the upper limit trapezoidal plug (14) and the lower limit trapezoidal plug (16), and the diameter of the filter paper is as follows: 50 mm.
5. A standard remolding soil sample bidirectional pressing device according to claim 1, wherein the upper limit trapezoidal plug (14) and the lower limit trapezoidal plug (16) are composed of a solid cylindrical base and a cylinder, the diameter of the cylindrical base is 3mm larger than that of the cylinder, the diameter of the cylinder is 49.8mm, and the length of the cylinder is 50 mm.
6. A standard remolding soil sample bidirectional pressing device according to claim 1, wherein the upper electric push rod switch and speed controller (8) and the lower electric push rod switch and speed controller (10) can adjust the pushing speed of the upper electric push rod (5) and the lower electric push rod (6), and the control range of the speed is as follows: 0.5mm-3 mm/s.
7. A standard remolding soil sample bidirectional pressing device according to claim 5, characterized in that the inner wall of the stainless steel sample cylinder (4) is polished on a grinding machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921667435.6U CN210741971U (en) | 2019-10-08 | 2019-10-08 | Standard remolding soil sample bidirectional sample pressing device |
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| CN201921667435.6U CN210741971U (en) | 2019-10-08 | 2019-10-08 | Standard remolding soil sample bidirectional sample pressing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567778A (en) * | 2019-10-08 | 2019-12-13 | 宁夏大学 | Standard remolded soil sample bidirectional sample pressing device and method |
| CN114166601A (en) * | 2021-12-02 | 2022-03-11 | 浙江大学 | Bidirectional press-in type triaxial sample preparation device and method based on soil stress history |
-
2019
- 2019-10-08 CN CN201921667435.6U patent/CN210741971U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567778A (en) * | 2019-10-08 | 2019-12-13 | 宁夏大学 | Standard remolded soil sample bidirectional sample pressing device and method |
| CN110567778B (en) * | 2019-10-08 | 2023-06-20 | 宁夏大学 | Standard remolded soil sample bidirectional sample pressing device and method |
| CN114166601A (en) * | 2021-12-02 | 2022-03-11 | 浙江大学 | Bidirectional press-in type triaxial sample preparation device and method based on soil stress history |
| CN114166601B (en) * | 2021-12-02 | 2022-10-21 | 浙江大学 | Bidirectional press-in type triaxial sample preparation device and method based on soil stress history |
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