CN210025745U - Remolded soil triaxial sample shedder - Google Patents
Remolded soil triaxial sample shedder Download PDFInfo
- Publication number
- CN210025745U CN210025745U CN201920153383.4U CN201920153383U CN210025745U CN 210025745 U CN210025745 U CN 210025745U CN 201920153383 U CN201920153383 U CN 201920153383U CN 210025745 U CN210025745 U CN 210025745U
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- ring
- valve ring
- valve
- triaxial sample
- remolded soil
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- 239000002689 soil Substances 0.000 title claims abstract description 31
- 241000446313 Lamella Species 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 description 26
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000003755 preservative agent Substances 0.000 description 3
- 230000002335 preservative effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a remolded soil triaxial sample shedder, including annular base and be fixed in the cylindrical base of the coaxial setting in annular base middle part, be fixed in cylindrical base periphery and laid a plurality of directional guide arms along the circumferencial direction, directional guide arm upper end cover is equipped with the ring seat that forms by the concatenation of the valve ring of the many lamellas, the valve ring has threely, and the ring seat inner wall that comprises three valve ring internal diameter is the same with three lamella mould lateral wall flange internal diameter, and the ring seat inside wall has the bayonet socket that can block three lamella mould lateral wall flanges, the bayonet socket equals with three lamella mould lateral wall flange width, and the ring seat is parallel with annular base. The utility model discloses remolded soil triaxial sample shedder will each size suit in the triaxial sample size of difference respectively, alright make shedder be applicable to the drawing of patterns work of different triaxial sample diameters.
Description
Technical Field
The utility model relates to a remolded soil triaxial sample shedder.
Background
The conventional triaxial test is an important test means in the field of geotechnical engineering and is an effective method for measuring the mechanical property of soil. For the triaxial test of remolded soil, the preparation quality of a sample has important influence on the test precision and the data reliability. The traditional three-segment mold for preparing the remolded soil sample consists of three 1/3 annular mold segments and a lantern ring, after the sample preparation is completed through layered compaction, the lantern ring is taken down and sleeved in a flange part on the side wall at the other end of the three-segment mold, external force is applied to the lantern ring to remove the three-segment mold at one time and take out a sample, the sampling method has obvious defects in actual operation, the sample bears three-surface frictional resistance in the one-time demolding process, the phenomenon that the side wall or the top surface of the sample is pulled to crack is easily caused, and further the test data are inaccurate.
Therefore, in order to effectively reduce the frictional resistance between the triaxial sample and the three-piece mold during the demolding process, some researchers have improved the demolding device and demolding method. Application No.: 201610110610.6, Chinese patent application number of multifunctional three-flap mold stripping device and its stripping method: 201620367246.7, Chinese utility model patent and application number named as remolded soil triaxial sample demoulding device: 20151089347.X, the name of the invention is "demolding device for soil compaction sample", and the like, and the patents all provide an improved demolding device and demolding method for remolded soil triaxial sample demolding technical problem.
The demoulding device and the demoulding method adopt one-by-one demoulding to avoid the sample bearing larger frictional resistance, and although the method can avoid the sample from being damaged in the demoulding process to a certain extent, the soil sample is easy to deform due to uneven stress when the second and third split moulds are dismantled. So far, no demolding device for remolded soil triaxial samples exists in the market. Therefore, how to provide a triaxial sample demolding device and a new demolding method capable of effectively reducing sample damage caused by uneven stress in the demolding process is a technical problem to be solved by technical personnel in the field of geotechnical engineering.
Disclosure of Invention
The utility model aims to overcome the weak point of current shedder and drawing of patterns method, provide a neotype remolded soil triaxial sample shedder and new drawing of patterns method, compensate and do not have dedicated shedder at the drawing of patterns in-process, ensure the integrality after the sample drawing of patterns, improve the success rate of remolding soil sample.
The utility model discloses a concrete implementation scheme is: the utility model provides a remolded soil triaxial sample shedder, includes annular base and is fixed in the cylindrical base of the coaxial setting in annular base middle part, is fixed in cylindrical base periphery and has laid a plurality of directional guide arms along the circumferencial direction, directional guide arm upper end cover is equipped with the ring seat that forms by the concatenation of the valve ring of the bivalve, the valve ring has threely, and the ring seat inner wall that constitutes by three valve ring internal diameter is the same with three lamella mould lateral wall flange internal diameter, and the ring seat inside wall has the bayonet socket that can block three lamella mould lateral wall flanges, the bayonet socket equals with three lamella mould lateral wall flange width, and the ring seat is parallel with annular base.
Furthermore, the valve ring comprises a first valve ring, a second valve ring and a third valve ring which are sequentially connected end to end, wherein two ends of the first valve ring are provided with an upper embedded interface, one end of the second valve ring is provided with an upper embedded interface, the other end of the second valve ring is provided with a lower embedded interface, and two ends of the third valve ring are provided with lower embedded interfaces.
Further, each valve ring is provided with a round hole penetrating through the positioning guide rod, and the inner diameter of the round hole is consistent with the outer diameter of the positioning guide rod.
Furthermore, the lower end of the positioning guide rod is in threaded fit with the annular base, the lower end of the positioning guide rod is provided with external threads, and the surface of the annular base is provided with a threaded hole matched with the positioning guide rod.
The utility model discloses still include one kind utilize as above remolded soil triaxial sample shedder carry out drawing of patterns method, concrete step is:
(1) the annular base is arranged on a plane and is fixedly connected with a directional guide rod; laying a preservative film on the top of the cylindrical base, and placing a three-piece mould filled with a remolded soil triaxial sample on the cylindrical base; according to the end structure of each valve ring, the circular holes on the valve ring penetrate through the positioning guide rods one by one, the three valve molds are spliced to form a ring seat, or a bayonet at the lower part of the ring seat is correspondingly buckled at the position of a flange on the side wall of the three valve molds, the three-axis sample of remolded soil is accurately positioned to a cylindrical base with equal diameter, and each mold piece of the three valve molds is in a suspended position;
(2) the traditional one-time demoulding and one-by-one demoulding method is abandoned, the demoulding is carried out in a segmented mode, firstly, force is uniformly applied to the first valve ring to enable the valve to slide downwards 1/3 sample height, then, force is uniformly applied to the second valve ring to enable the valve to slide downwards 1/3 sample height, and finally, force is uniformly applied to the third valve ring to enable the valve to slide downwards 1/3 sample height;
(3) and (3) repeatedly carrying out sectional demolding by driving the valve mold by each valve ring according to the downward sliding sequence of each valve ring in the step (2) until the demolding is finished.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides a remolded soil triaxial sample shedder and drawing of patterns method has following beneficial effect:
(1) the positioning guide rod, the scarf joint type three-valve ring and the three-valve die form a whole, and the remolded soil three-shaft sample can be accurately positioned on the equal-diameter cylindrical base.
(2) The prior one-time demoulding and one-by-one demoulding method is abandoned, the demoulding is carried out in a segmented mode, the interaction force between the moulds of the three-petal moulds is mutually restricted in the demoulding process, and the deformation of the soil sample caused by uneven stress when the second petal and the third petal are dismantled is avoided.
In the segmented demolding process, the ring seat formed by the embedded three valve rings is not only embedded in the flange on the outer side wall of the three-piece mold, but also has transverse restraining force on the three-piece mold, and the transverse restraining force is not applied to a sample but is transmitted through the interaction force between each piece of the mold and the mold. The phenomenon that the soil sample is cracked due to uneven stress on the side wall and the top surface of the sample in the demolding process can be effectively avoided.
(3) Remolded soil triaxial sample shedder simple structure, convenient and practical can fast assembly and dismantlement, and the wholeness is good after the equipment, practices thrift sample preparation time, and novel drawing of patterns method can effectively reduce the damage of drawing of patterns process to the sample.
Drawings
Fig. 1 is a schematic structural view of a remolded soil triaxial sample demolding device of the present invention;
FIG. 2 is a detailed view of the scarf joint three-clack ring of the present invention;
FIG. 3 is a top view of the scarf joint three-petal ring of the present invention;
fig. 4 is a schematic cross-sectional view of the fixing base and the mold before demolding.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, a remolded soil triaxial sample shedder, including annular base 10 and be fixed in the cylindrical base 20 of the coaxial setting in annular base middle part, be fixed in cylindrical base periphery and laid a plurality of directional guide arms 30 along the circumferencial direction, directional guide arm 30 upper end cover is equipped with the ring seat 40 that is formed by the concatenation of the valve ring shape, and the inner wall of ring seat 40 is the same with three lamella mould lateral wall flange internal diameter, and the ring seat inside wall has the bayonet 401 that can block three lamella mould 100 lateral wall flange 101, and the bayonet socket equals with three lamella mould 100 lateral wall flange 101 width, and ring seat 40 is parallel with annular base 10.
In this embodiment, the valve rings include three valve rings, the valve rings include a first valve ring 410, a second valve ring 420, and a third valve ring 430, which are sequentially connected end to end, two ends of the first valve ring 410 are upper insertion ports, one end of the second valve ring 420 is upper insertion port, the other end is lower insertion port, and two ends of the third valve ring 430 are lower insertion ports. The upper and lower embedded interfaces of adjacent annuluses are male and female surfaces coupled to each other so as to be able to be spliced to form a closed annulus 40.
Each annulus has a circular hole 440 through the positioning guide, the inner diameter of the hole corresponding to the outer diameter of the positioning guide.
The lower end of the positioning guide rod 30 is in threaded fit with the annular base, the lower end of the positioning guide rod is provided with external threads, and the surface of the annular base is provided with a threaded hole matched with the positioning guide rod.
The utility model discloses still include one kind utilize as above remolded soil triaxial sample shedder carry out drawing of patterns method, concrete step is:
(1) placing the cylindrical base 20 and the annular base 10 with the internal thread hole on a plane;
(2) connecting and fixing 3 directional guide rods 30 with the inner threaded holes of the annular base 10 in a threaded fit manner;
(3) a preservative film is flatly laid on the cylindrical base 20;
(4) placing the layered compacted three-axis sample which is not demoulded on a cylindrical base 20, wherein the cylindrical base 20, the preservative film and the three-axis sample are in contact, and the three-axis sample is adjusted to be placed in the cylindrical base 20 in the center;
(5) according to the sequence of the first valve ring, the second valve ring and the third valve ring, the circular holes on the valve ring are gradually penetrated through the positioning guide rods, the position of each valve is adjusted until the bayonet on the inner side wall of the three valve ring is clamped on the flange on the outer side wall of the three valve ring, and the first valve ring, the second valve ring and the third valve ring are spliced to form a closed ring seat 40;
(6) applying uniform force to the first annulus so that the flap slides 1/3 specimen height downward;
(7) applying uniform force to the second annulus causing the flap to slide 1/3 specimen height downward;
(8) applying even force to the third petal ring causes the petals to slide downward 1/3 the specimen height;
(9) and (5) repeating the steps (6), (7) and (8) until the demoulding operation is finished.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (4)
1. The utility model provides a remolded soil triaxial sample shedder, its characterized in that, includes ring base and is fixed in the cylinder base of the coaxial setting in ring base middle part, is fixed in cylinder base periphery and has laid a plurality of directional guide arms along the circumferencial direction, directional guide arm upper end cover is equipped with the ring seat that forms by the concatenation of the multivalve ring class, the ring class has threely, and the ring seat inner wall that constitutes by three ring class internal diameter is the same with three lamella mould lateral wall flange internal diameter, and the ring seat inside wall has the bayonet socket that can block three lamella mould lateral wall flanges, the bayonet socket equals with three lamella mould lateral wall flange width, and the ring seat is parallel with ring base.
2. The remolded soil triaxial sample demoulding device according to claim 1, wherein the valve ring comprises a first valve ring, a second valve ring and a third valve ring which are sequentially connected end to end, two ends of the first valve ring are provided with an upper embedded interface, one end of the second valve ring is provided with an upper embedded interface, the other end of the second valve ring is provided with a lower embedded interface, and two ends of the third valve ring are provided with lower embedded interfaces.
3. The remolded soil triaxial sample demould apparatus according to claim 2, wherein each valve ring has a circular hole passing through the positioning guide rod, and the inner diameter of the circular hole is matched with the outer diameter of the positioning guide rod.
4. The remolded soil triaxial sample demoulding device according to claim 3, wherein the lower end of the positioning guide rod is in threaded fit with the annular base, the lower end of the positioning guide rod is provided with external threads, and the surface of the annular base is provided with a threaded hole matched with the positioning guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920153383.4U CN210025745U (en) | 2019-01-29 | 2019-01-29 | Remolded soil triaxial sample shedder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920153383.4U CN210025745U (en) | 2019-01-29 | 2019-01-29 | Remolded soil triaxial sample shedder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210025745U true CN210025745U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920153383.4U Withdrawn - After Issue CN210025745U (en) | 2019-01-29 | 2019-01-29 | Remolded soil triaxial sample shedder |
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| Country | Link |
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| CN (1) | CN210025745U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531798A (en) * | 2019-01-29 | 2019-03-29 | 福州大学 | A kind of three axis sample stripper apparatus of manipulated soil and its release method |
| CN111620231A (en) * | 2020-06-22 | 2020-09-04 | 北京玻钢院复合材料有限公司 | Tool structure for demolding engine spray pipe diffusion section |
-
2019
- 2019-01-29 CN CN201920153383.4U patent/CN210025745U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531798A (en) * | 2019-01-29 | 2019-03-29 | 福州大学 | A kind of three axis sample stripper apparatus of manipulated soil and its release method |
| CN109531798B (en) * | 2019-01-29 | 2024-02-06 | 福州大学 | Remolded soil triaxial sample demoulding device and demoulding method thereof |
| CN111620231A (en) * | 2020-06-22 | 2020-09-04 | 北京玻钢院复合材料有限公司 | Tool structure for demolding engine spray pipe diffusion section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200207 Effective date of abandoning: 20240206 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200207 Effective date of abandoning: 20240206 |