CN112082852B - Unsaturated triaxial apparatus - Google Patents
Unsaturated triaxial apparatus Download PDFInfo
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- CN112082852B CN112082852B CN202011266456.4A CN202011266456A CN112082852B CN 112082852 B CN112082852 B CN 112082852B CN 202011266456 A CN202011266456 A CN 202011266456A CN 112082852 B CN112082852 B CN 112082852B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Abstract
The invention discloses an unsaturated triaxial apparatus, which comprises an outer cylinder, a pressure cylinder, a main cover plate, a sample base, an auxiliary cover plate and a loading rod, wherein the outer cylinder is provided with a pressure cylinder; the pressure cylinder is arranged in the outer cylinder, a pressure cavity with an upper opening is arranged in the pressure cylinder, and a water bath cavity with an upper opening is formed by the peripheral wall of the pressure cylinder and the inner wall of the outer cylinder; the upper end of the loading rod penetrates through the through hole and is fixedly connected with the auxiliary cover plate, and the bottom of the loading rod is provided with a sample cap and a hook structure which can hook the sample base and drive the sample base to be separated from the pressure cavity. According to the invention, through the split design of the main cover plate and the auxiliary cover plate, when a sample is taken and put, only the auxiliary cover plate needs to be opened, and the arrangement of a water bath cavity and the pipeline interference are not influenced; in addition, when a sample needs to be taken out, the auxiliary cover plate is only required to be disassembled, and the auxiliary cover plate is used for driving the loading rod, the sample base, the sample cap and the sample between the sample base and the sample cap to be taken out of the pressure cavity, so that various operations do not need to be carried out in the narrow pressure cavity, and the sample is convenient to take and place.
Description
Technical Field
The invention relates to a measuring and testing instrument, in particular to an unsaturated triaxial apparatus.
Background
The physical and mechanical properties of the natural soil body can be greatly different along with different water and temperature conditions. In projects such as thermal energy storage, geothermal resource development, nuclear waste treatment, oil exploitation, heat supply pipeline design, high-voltage cable burying and the like, the influence of temperature change on the engineering properties of soil is great. Therefore, research and test on soil quality by means of a triaxial apparatus are often required.
The sample is usually put into the pressure chamber and is wrapped by the rubber film, and the interference of the space of the pressure chamber and the sample cap is limited, so that the sample is quite troublesome to put and put in the pressure chamber.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the unsaturated triaxial apparatus which is convenient for taking and placing samples.
A non-saturated tri-axis tool according to an embodiment of a first aspect of the invention comprises: an outer cylinder; the pressure cylinder is arranged in the outer cylinder, a pressure cavity with an upper opening is formed in the pressure cylinder, and a water bath cavity with an upper opening is formed by the peripheral wall of the pressure cylinder and the inner wall of the outer cylinder; the main cover plate is arranged at the upper end of the outer barrel to seal the upper end of the water bath cavity, and the middle part of the main cover plate is provided with a yielding hole corresponding to the pressure cavity; the sample base is arranged at the bottom of the pressure cavity, and the bottom of the sample base is provided with a loading part which penetrates through the outer cylinder and the pressure cylinder; the auxiliary cover plate is detachably arranged at the upper end of the pressure cylinder and used for sealing the pressure cavity, and a through hole is formed in the center of the auxiliary cover plate; and the upper end of the loading rod penetrates through the through hole and is fixedly connected with the auxiliary cover plate, and the bottom of the loading rod is provided with a sample cap and a hooking structure which can hook the sample base and drive the sample base to be separated from the pressure cavity.
According to the embodiment of the invention, the unsaturated triaxial apparatus at least has the following technical effects: through the split design of the main cover plate and the auxiliary cover plate, when a sample is taken and placed, only the auxiliary cover plate needs to be opened, and the arrangement of a water bath cavity and the pipeline interference are not influenced; in addition, when a sample needs to be taken out, the auxiliary cover plate is only required to be disassembled, and the auxiliary cover plate is used for driving the loading rod, the sample base, the sample cap and the sample between the sample base and the sample cap to be taken out of the pressure cavity, so that the sample can be taken out and put out externally, various operations do not need to be carried out in the narrow pressure cavity, and the sample is convenient to take and put out.
According to some embodiments of the invention, the outer peripheral wall of the bottom of the pressure cylinder is provided with a plurality of clamping parts which are arranged in a surrounding manner, the inner bottom wall of the outer cylinder is provided with a mounting table, the mounting table is provided with a plurality of limiting arc-shaped protrusions which are arranged in a surrounding manner, a space for embedding one clamping part is arranged between every two adjacent limiting arc-shaped protrusions, the limiting arc-shaped protrusions are provided with a limiting groove, and one side of the limiting groove is provided with an opening for the clamping parts to be clamped into the limiting groove in a rotating manner.
According to some embodiments of the present invention, the top wall of the position-limiting groove has a plug hole, and the positioning portion has a position-limiting hole corresponding to the plug hole, and the plug hole is aligned with the position-limiting hole and is inserted with a position-limiting pin.
According to some embodiments of the invention, the limiting pin is fixedly connected with the main cover plate and extends downwards from the bottom of the main cover plate to the insertion hole and the limiting hole.
According to some embodiments of the invention, the hooking structure is a vertical column and a hook part, the vertical column extends downwards from the loading rod to the height of the sample base, the peripheral wall of the sample base is provided with a hook groove formed by inward depression, the hook part is arranged at the bottom of the vertical column and extends towards the sample base to be embedded into the hook groove, and the hook part can at least move up and down along the hook groove; and the hook part can rise along with the loading rod to abut against the inner wall of the hook groove, and then continuously rises to drive the sample base to rise.
According to some embodiments of the invention, the hook groove comprises an action groove, a withdrawing groove and a communicating groove, the action groove and the withdrawing groove vertically extend and are arranged at intervals, the communicating groove is communicated with the bottom of the action groove and the bottom of the withdrawing groove, the upper part of the withdrawing groove is opened, and the top of the action groove is provided with an inner wall for the hook part to hook the sample base.
According to some embodiments of the present invention, a connection plate is fixed above the auxiliary cover plate, and the upper end of the loading rod is fixedly connected to the connection plate.
According to some embodiments of the invention, the connecting plate is provided with a through hole corresponding to the loading rod, the loading rod is provided with threads on the outer peripheral wall of the upper end thereof and is provided with two clamping nuts for clamping the connecting plate.
According to some embodiments of the invention, the outer surface of the upper end of the pressure cylinder extends upwards to form a threaded column, the auxiliary cover plate is provided with a mounting hole corresponding to the threaded column, and the upper end of the threaded column passes through the mounting hole and is provided with a fastening nut.
According to some embodiments of the present invention, the outer ring of the main cover plate is fixedly connected to the outer cylinder through a fastener, the inner ring is attached to the upper end of the pressure cylinder, and the outer peripheral edge of the auxiliary cover plate has a pressing portion for pressing the inner ring of the main cover plate onto the pressure cylinder.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of an installation structure of an embodiment of the present invention;
FIG. 2 is an internal cross-sectional view of an embodiment of the invention;
FIG. 3 is a cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic view of the exploded structure of the pressure cylinder, the main cover plate and the outer cylinder in a cross-sectional state;
FIG. 5 is a schematic structural view of a main cover plate, a sample base, an auxiliary cover plate and a loading rod;
fig. 6 is an enlarged view at a of fig. 2.
Reference numerals:
the water bath device comprises an outer barrel 100, a water bath cavity 101, a water inlet 102, a water outlet 103, an installation platform 110, a limiting arc-shaped bulge 120, a limiting groove 121 and a jack 122;
the pressure cylinder 200, the pressure cavity 201, the confining pressure hole 202, the clamping part 210, the limiting hole 211 and the threaded column 220;
the main cover plate 300, the abdicating hole 310 and the limiting pin 320;
the device comprises a sample base 400, a high-air-intake-value argil plate 401, a back pressure channel 402, a loading part 410, a hook groove 420, an action groove 421, a withdrawing groove 422, a communicating groove 423, a mounting groove 430 and a circular ring 440;
the auxiliary cover plate 500, the through hole 510, the connecting column 520, the connecting plate 530, the through hole 531, the mounting hole 540, the fastening nut 541 and the pressing part 550;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 6, a non-saturated triaxial apparatus according to an embodiment of the present invention includes an outer cylinder 100, a pressure cylinder 200, a main cover 300, a sample base 400, an auxiliary cover 500, and a loading lever 600.
The outer cylinder 100 is opened at the upper part, the pressure cylinder 200 is installed in the outer cylinder 100, the pressure cylinder 200 is internally provided with a pressure chamber 201 with an opened upper part, and the outer peripheral wall of the pressure cylinder 200 and the inner wall of the outer cylinder 100 form a water bath chamber 101 with an opened upper part. The main cover plate 300 is installed on the upper end of the outer tub 100 to seal the upper end of the water bath chamber 101, the water bath chamber 101 has a water inlet 102 and a water outlet 103 for heat exchange, as shown in fig. 2, the water inlet 102 is disposed on the bottom wall of the outer tub 100 corresponding to the water bath chamber 101, the water outlet 103 is disposed on the main cover plate 300, and the water inlet 102 and the water outlet 103 are connected with corresponding pipes for hot water exchange. The middle part of the main cover plate 300 is provided with a yielding hole 310 corresponding to the pressure cavity 201; the sample base 400 is arranged at the bottom of the pressure cavity 201, the bottom of the sample base 400 is provided with a loading part 410 penetrating through the outer cylinder 100 and the pressure cylinder 200, during testing, the bottom of the loading part 410 applies a vertical pressure to push the sample base 400 upwards to apply a load to a sample, the bottoms of the outer cylinder 100 and the pressure cylinder 200 are both provided with guide holes for the loading part 410 to pass through, and the loading part 410 is in sealing fit with the peripheral wall of the guide holes and can lift and slide along the guide holes. In addition, the upper end of the sample base 400 is provided with a mounting groove 430, a high air intake value pottery clay plate 401 is mounted in the mounting groove 430, the bottom of the mounting groove 430 is provided with a back pressure channel 402 extending to the bottom of the loading part 410 for connecting an external pressure applying device to apply pore water pressure to the sample, the back pressure channel 402 can be inserted into a connecting pipe, and the outer end of the connecting pipe is detachably connected with a pipeline of the external pressure applying device through a connecting head.
The sub cover plate 500 is detachably mounted on the upper end of the pressure cylinder 200 for closing the pressure chamber 201, and the sub cover plate 500 has a through hole 510 at the center. Through the split design of the main cover plate 300 and the auxiliary cover plate 500, when a sample is taken and placed, only the auxiliary cover plate needs to be opened, and the arrangement of a water bath cavity and the interference of a pipeline are not influenced.
The upper end of the loading rod 600 passes through the through hole 510 and is connected and fixed with the auxiliary cover plate 500, the bottom of the loading rod 600 is provided with a sample cap 610, the bottom of the sample cap 610 is embedded with a permeable stone 601, the sample cap 610 is provided with an air pressure channel 602 extending to the permeable stone 601, an air pressure pipe is inserted in the air pressure channel 602, an external air pressure applying device is detachably connected with the air pressure pipe through a pipeline to apply air pressure, and the outer cylinder 100 and the pressure cylinder 200 are provided with corresponding holes to communicate the air pressure pipe with the external air pressure applying device. In addition, the pressure chamber 201 is provided with a confining pressure hole 202 so that the external pressure applying device provides confining pressure, and specifically, the confining pressure hole 202 is formed through the bottom walls of the outer cylinder 100 and the pressure cylinder 200. The bottom of the loading rod 600 is further provided with a hooking structure capable of hooking the sample base 400 and driving the sample base 400 to be separated from the pressure chamber 201. When the sample needs to be taken out, the sub-cover plate 500 is only disassembled, and the sub-cover plate 500 is taken out of the pressure chamber 201 together with the loading rod 600, the sample base 400 and the sample cap 610 and the sample between the sample base 400 and the sample cap 610, so that various operations in the narrow pressure chamber 201 are not required, and the sample is convenient to take out and place. In addition, it will be appreciated that the associated lines connected to the sample base 400 and sample cap 610 have sufficient length to accommodate the travel of the sample base 400 and sample cap 610 when the pressure chamber is raised.
In some embodiments of the present invention, the outer peripheral wall of the bottom of the pressure cylinder 200 is provided with a plurality of circumferentially arranged clamping portions 210, the inner bottom wall of the outer cylinder 100 is provided with a mounting table 110, the mounting table 110 is provided with a plurality of circumferentially arranged limiting arc-shaped protrusions 120, a space for one clamping portion 210 to be embedded is provided between two adjacent limiting arc-shaped protrusions 120, the limiting arc-shaped protrusions 120 are provided with a limiting groove 121, one side of the limiting groove 121 is provided with an opening for the clamping portion 210 to be rotatably clamped into the limiting groove 121, and the clamping portion 210 is embedded between two adjacent limiting arc-shaped protrusions 120 and then is rotatably clamped into the limiting groove 121, so that the installation and the positioning of the pressure cylinder 200 are facilitated.
In addition, for the sealing performance, a sealing ring is interposed between the bottom of the pressure tube 200 and the mounting base 110, and for the further improvement of the sealing performance, the top surface of the locking portion 210 is an inclined surface, and the resistance gradually increases as the locking portion 210 is gradually rotated to be locked into the stopper groove 121, that is, the thickness of the end portion of the locking portion 210 which is rotated to be locked into the stopper groove 121 is the smallest, and the thickness increases as going backward. Therefore, the sealing ring can be pressed tightly by clamping the limiting groove 121 along with the rotation of the clamping part 210, and the sealing performance is improved.
Referring to fig. 4, in a further embodiment of the present invention, the top wall of the limiting groove 121 has an insertion hole 122, the locking portion 210 has a corresponding limiting hole 211, the insertion hole 122 is aligned with the limiting hole 211 and a limiting pin 320 is inserted, and the position of the pressure cylinder 200 is fixed by the limiting pin 320, which facilitates disassembly and assembly.
In a further embodiment of the present invention, the limit pin 320 is fixedly connected to the main cover 300 and extends downward from the bottom of the main cover 300 to the insertion hole 122 and the limit hole 211, that is, the main cover 300 and the limit pin 320 are integrally installed and fixed, which can effectively reduce installation steps and parts, and is beneficial to the fact that the limit pin 320 does not need to be installed and fixed, and only needs to be installed and fixed by the main cover 300, and the main cover 300 is inserted into the insertion hole 122 and the limit hole 211 through the limit pin 320 to realize positioning, which is convenient for subsequent installation and fixing, specifically, the outer ring of the main cover 300 and the outer cylinder 100 are provided with corresponding holes to be connected and fixed by bolts, and the limit pin 320 is inserted into the insertion hole 122 and the limit hole 211 to realize positioning, which can realize the hole position alignment of the main cover 300 and the outer cylinder 100, thereby facilitating the subsequent installation of bolts.
Referring to FIG. 5, in some embodiments of the present invention, the hooking structure is a upstand 630 and a hook 631, the upstand 630 extending downward from the load lever 600 to the level of the sample base 400, and in particular, the upstand 630 is fixed to the peripheral wall of the sample cap 610. The peripheral wall of the sample base 400 is provided with an inwardly concave hook groove 420, the hook 631 is arranged at the bottom of the upright 630 and extends towards the sample base 400 to be embedded into the hook groove 420, and the hook 631 can move at least along the hook groove 420 in a lifting manner, i.e. the sample base 400 can lift relative to the sample cap 610 under the action of external load to apply load to a sample to be measured. The hook 631 can rise to the back that offsets with the hook groove 420 inner wall along with the loading rod 600, and continue to rise and drive the sample base 400 to rise to this effect of taking out the pressure chamber 201 with sample base 400 and sample is whole, makes things convenient for getting of sample to put.
In some embodiments of the present invention, the hook groove 420 includes an action groove 421, a receding groove 422, and a communicating groove 423, the action groove 421 and the receding groove 422 both extend vertically and are disposed at an interval, the communicating groove 423 communicates the bottom of the action groove 421 and the bottom of the receding groove 422, the receding groove 422 opens at the upper portion, and the top of the action groove 421 has an inner wall for the hook portion 631 to hook the sample base 400. The receding groove 422 and the communicating groove 423 can allow the hook portion 631 to enter the acting groove 421, and the hook portion 631 can vertically move in the acting groove 421 and can move upwards to abut against the inner wall of the top of the acting groove 421 to drive the sample base 400 to ascend. The receding groove 422 and the communicating groove 423 more facilitate the entry of the hook portion 631 into the acting groove 421 and avoid the deformation thereof, than the click-in of the acting groove 421 by the deformation of the hook portion 631 and the upstand 630. In addition, usually will wrap up between sample cap 610 and sample base 400 and connect a rubber membrane in order to wrap up the sample that awaits measuring, for the better installation of rubber membrane, can be at the fixed ring 440 of sample base 400 top, the peripheral wall of ring 440 is complete, makes things convenient for the suit rubber membrane. The ring may be screwed to the sample base 400 for easy removal.
It will be appreciated that for structural stability, the upstands 630, the hooks 631 and the hook slots 420 are evenly spaced in groups around the hook to provide stable hooking.
In some embodiments of the present invention, a connection plate 530 is fixed above the sub-cover 500, and the upper end of the loading rod 600 is fixedly connected to the connection plate 530. Specifically, the two sides of the sub-cover 500 are provided with connecting posts 520 extending upward, and the connecting plate 530 is fixed on the connecting posts 520. Make things convenient for installation load sensor on the load pole 600 like this, and load sensor is located between connecting plate 530 and the subshell board 500, because perforation 510's effect, the load that load pole 600 received upwards transmits to connecting plate 530 department, but the vertical load that load pole 600 received can accurately be monitored to load sensor between connecting plate 530 and the subshell board 500, the realization is to the accurate monitoring of experimental data, compare in installing load sensor in pressure chamber 201, the influence of the atmospheric pressure that this embodiment will avoid pressure chamber 201 to load data monitoring.
In some embodiments of the present invention, the connection plate 530 is provided with a through hole 531 corresponding to the loading rod 600 for passing through, the outer peripheral wall of the upper end of the loading rod 600 is provided with threads and is provided with two clamping nuts 620 for clamping the connection plate 530, the connection plate 530 is clamped by the two clamping nuts 620 to realize the connection and fixation of the loading rod 600 and the connection plate 530, and in addition, the height position of the loading rod 600 can be adjusted by adjusting the positions of the two clamping nuts 620 according to experimental requirements.
In a further embodiment of the present invention, the outer surface of the upper end of the pressure cylinder 200 extends upward to form a threaded post 220, the sub-cover 500 is provided with a mounting hole 540 corresponding to the threaded post 220, and the upper end of the threaded post 220 passes through the mounting hole 540 and is provided with a fastening nut 541, so that the sub-cover 500 can be detachably connected, and the installation is convenient and fast. As shown in fig. 6, a sealing ring is provided between the bottom surface of the sub cover plate 500 and the pressure tube 200 to improve sealing performance.
In a further embodiment of the present invention, the outer ring of the main cover plate 300 is fixedly connected to the outer cylinder 100 by a fastener, the inner ring of the main cover plate 300 is attached to the upper end of the pressure cylinder 200, the outer peripheral edge of the auxiliary cover plate 500 is provided with a pressing portion 550 to press the inner ring of the main cover plate 300 onto the pressure cylinder 200, the inner ring of the main cover plate 300 and the upper end of the pressure cylinder 200 are better sealed by the pressing portion 550, and the inner ring is prevented from being poor sealed due to lack of the fastener. It is conceivable that a sealing ring is provided at a portion where the main cover plate 300 abuts the upper end of the pressure tube 200 to improve sealability.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A non-saturated triaxial apparatus, comprising:
an outer tub (100);
the pressure cylinder (200) is arranged in the outer cylinder (100), a pressure cavity (201) with an upper opening is formed in the pressure cylinder, and a water bath cavity (101) with an upper opening is formed by the outer peripheral wall of the pressure cylinder (200) and the inner wall of the outer cylinder (100);
the main cover plate (300) is arranged at the upper end of the outer barrel (100) to seal the upper end of the water bath cavity (101), and the middle part of the main cover plate corresponding to the pressure cavity (201) is provided with a yielding hole (310);
the sample base (400) is arranged at the bottom of the pressure cavity (201), and the bottom of the sample base (400) is provided with a loading part (410) penetrating through the outer cylinder (100) and the pressure cylinder (200);
the auxiliary cover plate (500) is detachably arranged at the upper end of the pressure cylinder (200) and is used for sealing the pressure cavity (201), and a through hole (510) is formed in the center;
and the upper end of the loading rod (600) penetrates through the through hole (510) and is fixedly connected with the auxiliary cover plate (500), and the bottom of the loading rod (600) is provided with a sample cap (610) and a hook structure which can hook the sample base (400) and drive the sample base (400) to be separated from the pressure cavity (201).
2. The unsaturated tri-axial meter of claim 1, wherein: pressure cylinder (200) bottom periphery wall is equipped with a plurality of screens portions (210) of arranging of encircleing, the inside diapire of urceolus (100) is equipped with a mount table (110), mount table (110) have a plurality of spacing arc of arranging (120) of encircleing, adjacent two have the interval that supplies a screens portion (210) embedding between spacing arc arch (120), spacing arc is protruding (120) to have a spacing groove (121), spacing groove (121) one side is for supplying screens portion (210) rotation card to go into spacing groove (121) for the opening.
3. The unsaturated tri-axial meter of claim 2, wherein: the top wall of the limiting groove (121) is provided with a jack (122), the clamping part (210) is provided with a limiting hole (211) corresponding to the jack, and the jack (122) is aligned with the limiting hole (211) and is inserted with a limiting pin column (320).
4. The unsaturated tri-axial meter of claim 3, wherein: the limiting pin column (320) is fixedly connected with the main cover plate (300) and extends downwards from the bottom of the main cover plate (300) to the insertion hole (122) and the limiting hole (211).
5. The unsaturated tri-axial meter of claim 1, wherein: the hooking structure comprises a vertical column (630) and a hook part (631), the vertical column (630) extends downwards from the loading rod (600) to the height of the sample base (400), the peripheral wall of the sample base (400) is provided with a hook groove (420) formed by inward depression, the hook part (631) is arranged at the bottom of the vertical column (630) and extends towards the sample base (400) to be embedded into the hook groove (420), and the hook part (631) can at least move up and down along the hook groove (420); and the hook part (631) can rise along with the loading rod (600) to abut against the inner wall of the hook groove (420), and then continue to rise to drive the sample base (400) to rise.
6. The unsaturated tri-axial meter of claim 5, wherein: hook groove (420) are including effect groove (421), retreat groove (422) and intercommunication groove (423), effect groove (421) and retreat groove (422) equal vertical extension and mutual interval set up, intercommunication groove (423) intercommunication effect groove (421) bottom and retreat groove (422) bottom, retreat groove (422) upper portion opening, effect groove (421) top has the inner wall that supplies hook portion (631) to hook sample base (400).
7. The unsaturated tri-axial meter of claim 1, wherein: and a connecting plate (530) spaced from the auxiliary cover plate (500) is fixedly arranged above the auxiliary cover plate, and the upper end of the loading rod (600) is fixedly connected with the connecting plate (530).
8. The unsaturated tri-axial meter of claim 7, wherein: the connecting plate (530) is provided with a through hole (531) for the loading rod (600) to pass through corresponding to the loading rod, and the outer peripheral wall of the upper end of the loading rod (600) is provided with threads and is provided with two clamping nuts (620) for clamping the connecting plate (530).
9. The unsaturated tri-axial meter of claim 1, wherein: the outer surface of the upper end of the pressure cylinder (200) extends upwards to form a threaded column (220), the auxiliary cover plate (500) is provided with a mounting hole (540) corresponding to the threaded column (220), and the upper end of the threaded column (220) penetrates through the mounting hole (540) and is provided with a fastening nut (541).
10. The unsaturated tri-axial meter of claim 9, wherein: the outer ring of the main cover plate (300) is fixedly connected with the outer cylinder (100) through a fastener, the inner ring of the main cover plate is attached to the upper end of the pressure cylinder (200), and the peripheral edge of the auxiliary cover plate (500) is provided with a pressing part (550) for pressing the inner ring of the main cover plate (300) on the pressure cylinder (200).
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| CN202011266456.4A CN112082852B (en) | 2020-11-13 | 2020-11-13 | Unsaturated triaxial apparatus |
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| CN202011266456.4A CN112082852B (en) | 2020-11-13 | 2020-11-13 | Unsaturated triaxial apparatus |
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| CN112082852B true CN112082852B (en) | 2021-02-02 |
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