CN112061563B - Storage container capable of realizing triaxial compression locking of lunar soil samples with variable inner diameter - Google Patents

Storage container capable of realizing triaxial compression locking of lunar soil samples with variable inner diameter Download PDF

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Publication number
CN112061563B
CN112061563B CN202010894412.XA CN202010894412A CN112061563B CN 112061563 B CN112061563 B CN 112061563B CN 202010894412 A CN202010894412 A CN 202010894412A CN 112061563 B CN112061563 B CN 112061563B
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elastic
inner diameter
block
slope
wedge
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CN112061563A (en
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赵海峰
宁志涛
贾晨雪
穆瑞楠
盛强
王珂
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Technology and Engineering Center for Space Utilization of CAS
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Technology and Engineering Center for Space Utilization of CAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B65D25/10—Devices to locate articles in containers
    • B65D25/101—Springs, elastic lips, or other resilient elements to locate the articles by pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/07—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using resilient suspension means

Abstract

The invention relates to a storage container capable of realizing triaxial compression and locking lunar soil samples with variable inner diameter, which comprises an upper sealing cover, an outer barrel, an elastic inner barrel, an inner diameter contraction wedge block, an annular linkage mechanism and an axial jacking elastic piece, wherein the elastic inner barrel is sleeved in the outer barrel, and the annular linkage mechanism is sleeved between the elastic inner barrel and the outer barrel; the bottom wall of the outer barrel is provided with a slope, the lower end of the annular linkage mechanism is in contact with the slope and can move relative to the slope, and the upper end of the annular linkage mechanism is in contact with the wedge-shaped slope surface of the inner diameter contraction wedge block and can move relative to the inner diameter contraction wedge block; one end of the axial propping elastic piece is connected with the bottom wall of the outer barrel, and the other end is fixed with a sliding block which can slide in the elastic inner barrel in a sealing way; the upper sealing cover is buckled at the top of the outer barrel, and the upper end and the lower end of the annular linkage mechanism slide along the wedge-shaped slope surface and the slope respectively by extruding the inner diameter shrinkage wedge block, so that the radial shrinkage of the elastic inner barrel is realized, and meanwhile, the axial jacking elastic piece is compressed. The method can preserve the original bedding information of the lunar soil sample as much as possible.

Description

Storage container capable of realizing triaxial compression locking of lunar soil samples with variable inner diameter
Technical Field
The invention relates to the technical field of celestial body sample return packaging and storage, in particular to a storage container capable of realizing three-axis compression and locking of lunar soil samples with variable inner diameters.
Background
The united states celestial body sample return packaging technology was originally developed in the Apollo project of the 60 th generation of the 20 th century, and a series of combined sample packaging systems based on Teflon packaging bags, stainless steel sample tubes and aluminum sample boxes are developed aiming at a plurality of scientific problems that elements, isotopes and organic matter components need to be determined after lunar samples are returned. Sampling of the American Apollo program is based on manual sample screening and collection by astronauts and manual encapsulation; meanwhile, the method meets the scientific requirements of the closed return and the subsequent low-background test of a large number of different types of samples; apollo plans to use an aluminum sealed suitcase as the outer package for the sample, with a Teflon sample bag inside and a stainless steel sample tube as the container in direct contact with the sample to hold the different types of samples. In order to ensure the tightness of the sample, the Apollo project selects a stainless steel sample tube made of 304L material, and adopts In-Ag alloy to completely seal the sample tube In a metal compression joint mode. Stainless steel sample tubes are used primarily to store drill cores and some of the coarser samples. For lunar soil samples, the apollo program collected the samples using teflon sample bags, and a protocol of sealing with aluminum labels rolled down and further securing with nylon snaps.
In the aspect of a lunar rock/soil sample encapsulation technology, NASA mainly adopts a knife-edge extrusion indium-silver alloy sealing technology in the Apollo No. 11-17 task of the 70 th generation of the 20 th century, but due to the influence of lunar dust fragments, the problem of multiple sealing failures occurs in the task process. Then under the promotion of NASA SBIR/STTR project in 2005, the structural design of the knife-edge extrusion indium-silver alloy sealing technology and the components of the indium-silver alloy are improved, the metal melting sealing technology is developed, and the influence of monthly dust fragments on the sealing performance of the packaging technology is eliminated. In the Mars sample return program, NASA proposed an explosion welding sealing technology in advance of 2000, and then proposed a brazing sealing technology as an improvement in 2007, and the two technologies theoretically achieve absolute airtight sealing while ensuring that the outer wall of the packaging container is not contaminated. In 2012, NASA again designed sample packaging containers with shape memory alloy caps/plugs for the mars core samples, reducing the risk of sample contamination compared to welded seals. Besides the sealing technology, the preservation of the sequence of the lunar soil sample after encapsulation has important significance for subsequent research, but the encapsulation container designed by NASA cannot further protect the sequence of the lunar soil sample after encapsulation, and other related technologies in the aspect of the United states have not been found.
The research on the currently developed sample packaging technology in China is limited, and the related technical development in China is less in the related technical challenges aiming at the new generation of sample packaging technology developed in Mars sample return plan in the United states and in Japan in falcon No. 2, and the existing packaging technology has gaps with the existing technology in the United states in air tightness and reliability, so that the vigorous development of the sample packaging technology in China is necessary. Meanwhile, compared with a core sample, the soil sample is softer, and the sequence of the packaged soil sample is more easily affected by vibration in the transportation process, so that the active maintenance of the sequence of the sample is very necessary.
The packaging container adopted by the Apollo is a box body, a cover body of the packaging container can be completely separated from the box body when being opened, and the opening, closing and locking of the cover body are manually completed by astronauts. The sample packaging container is a rectangular box body, and the shape of a sealing surface is rectangular. The O-shaped rubber sealing ring is adopted for primary sealing of the sample container, is positioned on the outer side of the sealing structure, and forms sealing pretightening force by means of spring buckles. The secondary sealing adopts a metal fusion welding sealing mode, namely, a notch is formed in the container box body, a sealing plate is welded on the container cover body, and metal indium with a U-shaped opening is arranged in the notch. Before fusion welding, the sealing plate is inserted into a U-shaped opening of the metal indium; in the sealing process, after the indium metal is heated by a heating pipe to be molten, the sealing plate is welded in the groove to form a seal. The sealing mode formed by the O-shaped rubber ring seal and the metal fusion welding seal is a redundant sealing structure.
In addition, in the Apollo project, a cylindrical sample container is used. The container is used for collecting a rock core sample or a trace gas sample, the container is sealed by adopting a metal extrusion sealing technology, a sharp knife edge is processed on a shell of the container, indium-silver alloy is mounted on a cover body, and the indium-silver alloy is extruded into the indium-silver alloy by the knife edge to form sealing. The cover body of the container is provided with a pull claw mechanism, and the pull claw can tightly press the cover body of the container on the knife edge of the container shell and lock the cover body of the container.
The sample containers adopted by the Apollo project are all used for storing harder lunar rocks, have no sample sequence maintaining function and cannot effectively store the bedding information of lunar soil samples.
Disclosure of Invention
The invention aims to solve the technical problems that the conventional lunar soil sample storage container has no sample sequence maintaining function, cannot effectively store the bedding information of a lunar soil sample, and has large influence on the bedding of the sample due to vibration in the transportation process.
The technical scheme for solving the technical problems is as follows: a storage container capable of realizing triaxial compression and locking of lunar soil samples with variable inner diameter comprises an upper sealing cover, an outer barrel, an elastic inner barrel, an inner diameter shrinkage wedge block, an annular linkage mechanism and an axial jacking elastic piece, wherein the elastic inner barrel is sleeved in the outer barrel, and the annular linkage mechanism is sleeved in a gap between the elastic inner barrel and the outer barrel; the bottom wall of the outer barrel is provided with a slope, the lower end of the annular linkage mechanism is in contact with the slope and can move relative to the slope, and the upper end of the annular linkage mechanism is in contact with the wedge-shaped slope surface of the inner diameter shrinkage wedge block and can move relative to the inner diameter shrinkage wedge block; one end of the axial jacking elastic piece is connected with the bottom wall of the outer barrel, and the other end of the axial jacking elastic piece is fixed with a sliding block which can slide in the elastic inner barrel in a sealing way; the upper sealing cover is buckled at the top of the outer barrel, and the upper end and the lower end of the annular linkage mechanism respectively slide along the wedge-shaped slope surface and the slope by extruding the inner diameter shrinkage wedge block, so that the radial shrinkage of the elastic inner barrel is realized, and the axial jacking elastic piece is compressed.
The invention has the beneficial effects that: the storage container disclosed by the invention has the advantages that the porosity of the soil is reduced through axial and radial shrinkage, so that the influence of the transportation process on the sample sequence is weakened, and the original bedding information of the lunar soil sample is stored as much as possible.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the annular linkage mechanism comprises a plurality of strip-shaped foundation blocks, wherein one side of each foundation block is sunken to form a through groove, and the other side of each foundation block is protruded to form a lug matched with the through groove; the through grooves are arranged in a penetrating manner along a direction vertical to the length of the base block; the convex blocks on the foundation blocks are connected in the through grooves of the adjacent foundation blocks in a sliding manner along the direction vertical to the length of the convex blocks; the plurality of foundation blocks are matched with the through grooves through the convex blocks to be sequentially connected into a cylindrical structure; and two ends of each foundation block are respectively in contact fit with the slope and the wedge-shaped slope surface.
The beneficial effect of adopting the further scheme is that: the annular linkage mechanism formed by the plurality of strip-shaped foundation blocks does not need power driving, and under the action of axial pressure, adjacent foundation blocks slide relatively, so that the whole mechanism has a radial contraction trend.
Furthermore, slope and wedge are domatic and are the annular respectively, be equipped with a plurality of spouts that are radially arranged on slope and the wedge are domatic respectively, the mobilizable setting in the corresponding spout respectively in both ends of basis piece.
The beneficial effect of adopting the further scheme is that: radial sliding grooves are formed in the annular slope and the wedge-shaped slope surface, so that all the base blocks can be correspondingly arranged in the corresponding sliding grooves one by one and can move along the corresponding sliding grooves.
Furthermore, an elastic limiting part is arranged in the sliding chute, one end of the sliding chute, which is close to the axis of the elastic inner barrel, is a contraction end, one end of the sliding chute, which is far away from the axis of the elastic inner barrel, is an initial end, and a limiting groove is formed in the position, which is close to the contraction end, in the sliding chute in a concave manner; two ends of the elastic limiting piece are respectively connected with the contraction end of the sliding chute and the end part of the foundation block; in an initial state, the elastic limiting piece limits the end part of the base block at the initial end of the sliding groove; when the base block is in a contraction state, the end part of the base block moves along the sliding groove to enable the elastic limiting part to be compressed and clamped into the limiting groove.
The beneficial effect of adopting the further scheme is that: the initial state of the foundation block is limited by the elastic limiting part, the contraction state of the foundation block is limited by the limiting groove, and when the storage container is opened, the annular linkage mechanism is still in the contraction state.
Furthermore, spherical sliding blocks are respectively arranged at two ends of each foundation block, and the spherical sliding blocks are connected with the slope or the wedge-shaped slope in a sliding or rolling manner.
The beneficial effect of adopting the further scheme is that: the arrangement of the spherical sliding block enables the base block to move more smoothly relative to the slope or the wedge-shaped slope surface.
Further, the basic block is a sector block formed by cutting a cylinder along a tangent line of a preset angle, and the convex block and the through groove are respectively positioned on two cutting surfaces of the sector block.
The beneficial effect of adopting the further scheme is that: the base block is a fan-shaped block formed by cutting a cylinder, so that the radial shrinkage stress is uniform and stable, and the assembly and the forming are convenient.
Furthermore, one side of each foundation block is provided with at least two lugs, and the other side of each foundation block is provided with at least two through grooves.
Further, the elastic inner barrel comprises an expandable elastic sheet, and the elastic sheet is rolled into a partially overlapped cylindrical structure in an initial state.
The beneficial effect of adopting the further scheme is that: the elastic sheets which are partially rolled and overlapped are adopted, so that the contraction is convenient.
Furthermore, a circle of elastic rubber ring is arranged on the circumferential direction of the sliding block, and the elastic rubber ring is in contact with the inner side wall of the elastic inner barrel.
The beneficial effect of adopting the further scheme is that: the elastic rubber ring is radially arranged on the sliding block, lunar soil can be prevented from entering the bottom of the sliding block, the elastic rubber ring is extruded and deformed when the elastic inner barrel contracts radially, so that the elastic inner barrel can be ensured to effectively slide in the radial contraction process, and the elastic part is axially pushed up by the compression.
Further, the upper sealing cover is provided with a circle of annular sealing groove, the annular sealing groove is buckled at the upper end of the outer barrel, and the upper sealing cover is abutted against the inner diameter shrinkage wedge block.
The beneficial effect of adopting the further scheme is that: the upper sealing cover and the outer barrel are sealed in a blade form, so that the air tightness of the container is effectively guaranteed.
Drawings
FIG. 1 is a schematic cross-sectional view showing an initial state of a storage container for lunar soil samples with a variable inner diameter and three-axis compression locking;
FIG. 2 is a schematic cross-sectional view showing the construction of the storage container of the present invention in a contracted storage state in which the three-axis compression locking of lunar soil samples is realized by varying the inner diameter;
FIG. 3 is a force diagram of a lunar soil sample in a storage container according to the present invention;
FIG. 4 is a schematic structural view of the ring linkage of the present invention in an open state and a contracted state;
FIG. 4a is a schematic structural view of an open state of the ring linkage;
FIG. 4b is a schematic structural view of the ring linkage in a contracted state;
FIG. 5 is a schematic front and back side view of a basic block of the present invention;
FIG. 6 is a schematic perspective view of an inner diameter retracting wedge of the present invention;
fig. 7 is a schematic structural view showing an initial state and a compressed state of the axial tension spring according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. an upper sealing cover; 11. an annular seal groove; 2. an outer tub; 3. an elastic inner barrel; 4. an inner diameter shrinkage wedge; 41. a wedge-shaped slope surface; 42. a chute; 43. a limiting spring; 44. an annular rim; 5. an annular linkage mechanism; 51. a base block; 52. a bump; 53. a through groove; 54. a spherical slider; 6. axially jacking the spring; 7. a slider; 71. an elastic rubber ring; 8. a lunar soil sample.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
As shown in fig. 1-7, the storage container with variable inner diameter for realizing three-axis compression locking of lunar soil samples of the present embodiment includes an upper sealing cover 1, an outer barrel 2, an elastic inner barrel 3, an inner diameter shrinkage wedge block 4, an annular linkage mechanism 5 and an axial tightening elastic element, wherein the elastic inner barrel 3 is sleeved in the outer barrel 2, and the annular linkage mechanism 5 is sleeved in a gap between the elastic inner barrel 3 and the outer barrel 2; the bottom wall of the outer barrel 2 is provided with a slope, the lower end of the annular linkage mechanism 5 is in contact with the slope and can move relative to the slope, and the upper end of the annular linkage mechanism 5 is in contact with the wedge-shaped slope surface 41 of the inner diameter shrinkage wedge block 4 and can move relative to the inner diameter shrinkage wedge block 4; one end of the axial propping elastic piece is connected with the bottom wall of the outer barrel 2, and the other end is fixed with a slide block 7 which can slide in the elastic inner barrel 3 in a sealing way; the upper sealing cover 1 is buckled at the top of the outer barrel 2, and the upper end and the lower end of the annular linkage mechanism 5 respectively slide along the wedge-shaped slope surface 41 and the slope by extruding the inner diameter contraction wedge block 4, so that the radial contraction of the elastic inner barrel 3 is realized, and the axial tightening elastic piece is compressed.
The storage container of this embodiment utilizes sealed lid to realize upper portion top tight, utilizes the tight elastic component of axial top to realize the lower part top tight, utilizes annular link gear and the interior bucket of elasticity to realize radial shrink top tight, carries out triaxial compression locking lunar soil sample through axial and radial shrink, reduces lunar soil porosity to weaken the influence of transportation to sample sequence, preserve lunar soil sample's original layer reason information as far as possible.
As shown in fig. 4, a specific solution of the annular linkage mechanism 5 of this embodiment is that the annular linkage mechanism 5 includes a plurality of strip-shaped base blocks 51, one side of each base block 51 is recessed to form a through groove 53, and the other side of each base block 51 is raised to form a protrusion 52 adapted to the through groove 53; the through grooves 53 are arranged in a penetrating manner along a direction perpendicular to the length of the base block 51; the lug 52 on the basic block 51 is connected in the through groove 53 of the adjacent basic block 51 in a sliding way along the direction vertical to the length of the basic block; a plurality of the basic blocks 51 are matched with the through grooves 53 through the convex blocks 52 to be sequentially connected into a cylindrical structure, and the length of the cylindrical structure is equivalent to that of the elastic inner barrel 3; the two ends of each basic block 51 are respectively in contact fit with the slope and the wedge-shaped slope surface 41. The base block 51 is arranged in a direction parallel to the axis of the cylindrical structure. The annular linkage mechanism 5 formed by the plurality of strip-shaped basic blocks 51 is adopted, the inner inclined surface and the outer inclined surface of each basic block 51 are respectively provided with the convex blocks 52 and the through grooves 53, the relative motion track of the basic blocks in the matching process is ensured, power driving is not needed, relative sliding exists between the adjacent basic blocks under the action of axial pressure, and the whole mechanism presents a radial contraction trend.
As shown in fig. 5, in a preferred embodiment of the present invention, the cross section of the through slot 53 on the basic block 51 is a trapezoidal structure, that is, the width of the slot opening of the through slot 53 is smaller than the width of the slot bottom, and the protrusion 52 can only be inserted into the through slot 53 from one end of the through slot 53, so that the relative movement between adjacent basic blocks 51 can only be a staggered sliding without scattering.
Specifically, as shown in fig. 1, fig. 2 and fig. 6, the slope and the wedge-shaped slope 41 of this embodiment are respectively annular, a plurality of radially arranged sliding grooves 42 are respectively disposed on the slope and the wedge-shaped slope 41, and two ends of the base block 51 are respectively movably disposed in the corresponding sliding grooves 42. Radial sliding grooves are formed in the annular slope and the wedge-shaped slope surface, so that all the base blocks can be correspondingly arranged in the corresponding sliding grooves one by one and can move along the corresponding sliding grooves.
As shown in fig. 1 and 2, when the outer tub 2 is vertically placed, the slope of the bottom wall of the outer tub 2 is a structure with a high outer ring side and a low middle part, i.e., the inner diameter gradually shrinks from top to bottom. The inner diameter shrinkage wedge block 4 is of an annular structure, and a wedge-shaped slope surface 41 of the inner diameter shrinkage wedge block is positioned on the lower end surface of the inner diameter shrinkage wedge block 4 and gradually shrinks from bottom to top in inner diameter.
In a preferred embodiment of this embodiment, as shown in fig. 7, the axial tightening elastic member is an axial tightening spring 6. The middle part of the annular slope of the bottom wall of the outer barrel 2 is provided with a limiting block, the bottom of the sliding block 7 is provided with a limiting boss, and the upper end and the lower end of the axial jacking spring 6 are respectively sleeved on the limiting block and the limiting boss.
As shown in fig. 1 and fig. 2, in a preferred embodiment of the present embodiment, an elastic limiting member is disposed in the sliding groove 42, one end of the sliding groove 42 close to the axis of the elastic inner barrel 3 is a contraction end, one end of the sliding groove 42 far away from the axis of the elastic inner barrel 3 is an initial end, and a limiting groove is formed in a position of the sliding groove 42 close to the contraction end in a recessed manner; two ends of the elastic limiting piece are respectively connected with the contraction end of the sliding chute 42 and the end of the base block 51; in an initial state, the elastic limiting piece limits the end part of the base block 51 at the initial end of the sliding groove 42; in the contracted state, the end of the base block 51 moves along the sliding groove 42 to compress the elastic limiting member and is clamped into the limiting groove. The initial state of the foundation block is limited by the elastic limiting part, the contraction state of the foundation block is limited by the limiting groove, and when the storage container is opened, the annular linkage mechanism is still in the contraction state.
As shown in fig. 1 and 2, the elastic limiting member is a limiting spring 43. A limit spring 43 is disposed in each slide groove 42.
As shown in fig. 4 and fig. 5, a preferable scheme of this embodiment is that two ends of each base block 51 are respectively provided with a spherical sliding block 54, and the spherical sliding blocks 54 are connected with the slope or wedge-shaped slope 41 in a sliding or rolling manner. The arrangement of the spherical sliding block enables the base block to move more smoothly relative to the slope or the wedge-shaped slope surface. The spherical sliding blocks 54 can be fixed at two ends of the base blocks 51, or the spherical sliding blocks 54 can be preferably arranged at two ends of the base blocks 51 in a rolling manner, so that the spherical sliding blocks 54 can directly roll in the corresponding sliding grooves 42, and the relative sliding of the base blocks 51 is smoother. The limiting groove at the bottom of the sliding groove 42 is a semispherical structure matched with the spherical sliding block 54, and is used for limiting the spherical sliding block 54 in the limiting groove.
Specifically, as shown in fig. 4 and 5, the base block 51 is a segment cut by a cylinder having a certain thickness along a tangent line of an inner sidewall of a predetermined angle, and the protrusion 52 and the through groove 53 are respectively located on two cutting surfaces of the segment. The base block 51 is a sector block formed by cutting a cylinder, so that the radial shrinkage stress is uniform and stable, and the assembly and the forming are convenient. The thickness of the cylinder may be selected according to the thickness of the desired annular linkage 5, and is also limited by the spacing between the outer tub 2 and the elastic inner tub 3.
Wherein, the expanded state and the contracted state of the annular linkage mechanism 5 are respectively shown in fig. 4, fig. 4a is the open state of the annular linkage mechanism 5, and fig. 4b is the contracted state of the annular linkage mechanism 5. In this embodiment, preferably, 24 sectors with the same size are adopted (as shown in fig. 4 and 5), the sectors are provided with inner and outer matched cutting surfaces, wherein the outer cutting surface of the previous sector is matched with the inner cutting surface of the other sector, and can be matched with the through groove 53 for relative sliding by using the projection 52 and the through groove 53, and so on, until all the sectors are combined to form a closed annular cylindrical cylinder, the spherical sliding block 54 on each sector can slide in the corresponding sliding groove 42, so as to control the motion track of each sector; the bottom inclined plane of the outer barrel 2 has the same structure with the wedge-shaped slope surface 41 on the inner diameter contraction wedge block 4, so that the axial position of the whole annular linkage mechanism 5 is unchanged in the inner diameter contraction process. The number of the chutes 42 on the bottom inclined plane and the inner diameter shrinkage wedge block 4 of the outer barrel 2 is respectively the same as that of the fan-shaped blocks. It is also possible to increase or decrease the number of units constituting the ring linkage 5 by changing the initial design angle of the segments. For example, the present embodiment preferably uses 24 sectors of the same size, i.e. cut according to a certain angle on a cylinder with a certain thickness.
Preferably, as shown in fig. 5, each of the base blocks 51 is provided with at least two protrusions 52 on one side and at least two through grooves 53 on the other side. At least two projections 52 and through grooves 53 are provided on the base blocks 51, which facilitates stable clamping between adjacent base blocks 51.
In a specific aspect of this embodiment, the elastic inner barrel 3 includes an expandable elastic sheet, and the elastic sheet is rolled into a partially overlapped cylindrical structure in an initial state. When the elastic inner barrel 3 is contracted by the ring-shaped linkage 5, the overlapped portion thereof is further increased. The elastic inner barrel 3 can be made of spring steel (65Mn), and the specific thickness is suitable for smooth radial contraction under the action of the annular linkage mechanism 5. The elastic sheets which are partially rolled and overlapped are adopted, so that the contraction is convenient.
As shown in fig. 7, in this embodiment, a circle of elastic rubber ring 71 is circumferentially disposed on the sliding block 7, and the elastic rubber ring 71 contacts with an inner sidewall of the elastic inner barrel 3. The elastic rubber ring 71 is radially arranged on the sliding block 7, so that the lunar soil sample 8 can be prevented from entering the bottom of the sliding block 7, and the elastic rubber ring 71 is extruded and deformed when the elastic inner barrel 3 is radially contracted, so that the elastic inner barrel 3 can be ensured to effectively slide in the radial contraction process, and the elastic part is axially pushed.
Specifically, as shown in fig. 1, a ring of annular seal groove 11 is arranged on the upper seal cover 1, the annular seal groove 11 is buckled at the upper end of the outer tub 2, and the upper seal cover 1 abuts against the inner diameter shrinkage wedge block 4. The upper sealing cover 1 and the outer barrel 2 are sealed in a blade form, so that the air tightness of the container is effectively guaranteed. And a packaging block is arranged at the center of the bottom of the upper sealing cover 1, and when the upper sealing cover 1 is buckled on the outer barrel 2, the packaging block is inserted into a through hole in the middle of the annular inner diameter shrinkage wedge block and extrudes a lunar soil sample in the elastic inner barrel 3 from top to bottom. The inner ring of the inner diameter shrinkage wedge block 4 is provided with a ring of annular edge 44, and when the inner diameter shrinkage wedge block 4 is buckled on the annular linkage mechanism 5, the annular edge 44 of the inner diameter shrinkage wedge block 4 is pressed on the upper end of the elastic inner barrel 3.
The invention relates to a storage container capable of realizing triaxial compression and locking of lunar soil samples with variable inner diameter, which is characterized in that when in work, firstly, collected lunar soil samples 8 are loaded into an elastic inner barrel 3 of the storage container, then a sealing cover 1 is installed, an annular sealing groove 11 of the sealing cover 1 is sleeved on an outer barrel 2, the sealing cover 1 presses an inner diameter shrinkage wedge block 4, a packaging block at the bottom center of the sealing cover 1 presses the lunar soil samples 8, in the installation process of the sealing cover 1, spherical sliding blocks 54 at the upper end and the lower end of an annular linkage mechanism 5 are respectively positioned on a wedge-shaped slope surface 41 of the inner diameter shrinkage wedge block 4 and a slope surface at the bottom of the outer barrel, the sealing cover 1 is pressed downwards, the spherical sliding blocks 54 at the upper end and the lower end of a foundation block 51 respectively slide along corresponding sliding grooves 42 to positions close to a central axis, a plurality of foundation blocks 51 slide relatively and gradually gather together, so that the annular linkage mechanism 5 is changed from an initial state to a shrinkage state, finally, the foundation blocks 51 are limited in the limiting grooves at the contraction ends of the sliding grooves 42, and the foundation blocks 51 are gradually gathered and compress the elastic inner barrel 3, so that the elastic inner barrel 3 is continuously wound, the overlapped part of the elastic inner barrel 3 is increased, and the inner diameter of the elastic inner barrel 3 is contracted. During the pressing down, the axial holding-down spring 6 is compressed together, so that a radial contraction and axial compression of the stored lunar soil sample 8 are achieved. The final state diagram is shown in fig. 2.
The stress state of the lunar soil sample 8 after triaxial locking is shown in figure 3, wherein sigma isz1For the upper sealing cover 1 to the lunar soil sample 8 pressure, sigmaz2Elastic force, σ, exerted on the lunar soil sample 8 for axially tightening the spring 6rThe elastic inner barrel 3 applies radial pressure to the lunar soil sample 8 through the annular linkage mechanism 5, and the three forces act on the lunar soil sample 8 together to realize triaxial locking of the lunar soil sample 8 and ensure compaction and order preservation of the lunar soil sample 8.
According to the lunar soil storage container, the annular linkage mechanism is additionally arranged in the lunar soil storage container to realize the inner diameter shrinkage of the lunar soil storage container, the axial jacking spring is arranged at the bottom of the lunar soil storage container to realize axial pre-tightening, and the porosity of soil is reduced through radial shrinkage and axial compression, so that the influence of a transportation process on the sequence of a sample is weakened, and the sequence of the lunar soil sample can be further protected after the lunar soil sample is packaged.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A storage container capable of realizing three-axis compression and locking of lunar soil samples with variable inner diameter is characterized by comprising an upper sealing cover, an outer barrel, an elastic inner barrel, an inner diameter shrinkage wedge block, an annular linkage mechanism and an axial jacking elastic piece, wherein the elastic inner barrel is sleeved in the outer barrel, and the annular linkage mechanism is sleeved in a gap between the elastic inner barrel and the outer barrel; the bottom wall of the outer barrel is provided with a slope, the lower end of the annular linkage mechanism is in contact with the slope and can move relative to the slope, and the upper end of the annular linkage mechanism is in contact with the wedge-shaped slope surface of the inner diameter shrinkage wedge block and can move relative to the inner diameter shrinkage wedge block; one end of the axial jacking elastic piece is connected with the bottom wall of the outer barrel, and the other end of the axial jacking elastic piece is fixed with a sliding block which can slide in the elastic inner barrel in a sealing way; the upper sealing cover is buckled at the top of the outer barrel, and the upper end and the lower end of the annular linkage mechanism respectively slide along the wedge-shaped slope surface and the slope by extruding the inner diameter shrinkage wedge block, so that the radial shrinkage of the elastic inner barrel is realized, and the axial jacking elastic piece is compressed.
2. The storage container capable of realizing triaxial compression locking of lunar soil samples with variable inner diameter according to claim 1, wherein the annular linkage mechanism comprises a plurality of elongated base blocks, one side of each base block is sunken to form a through groove, and the other side of each base block is protruded to form a convex block matched with the through groove; the through grooves are arranged in a penetrating manner along a direction vertical to the length of the base block; the convex blocks on the foundation blocks are connected in the through grooves of the adjacent foundation blocks in a sliding manner along the direction vertical to the length of the convex blocks; the plurality of foundation blocks are matched with the through grooves through the convex blocks to be sequentially connected into a cylindrical structure; and two ends of each foundation block are respectively in contact fit with the slope and the wedge-shaped slope surface.
3. The storage container for lunar soil samples capable of realizing triaxial compression locking with variable inner diameter according to claim 2, wherein the slope and the wedge-shaped slope are respectively annular, a plurality of radially arranged sliding grooves are respectively arranged on the slope and the wedge-shaped slope, and two ends of the foundation block are respectively movably arranged in the corresponding sliding grooves.
4. The storage container for lunar soil samples with variable inner diameter and three-axis compression locking function as claimed in claim 3, wherein an elastic limiting member is arranged in the sliding chute, one end of the sliding chute close to the axis of the elastic inner barrel is a contraction end, the other end of the sliding chute far away from the axis of the elastic inner barrel is an initial end, and a limiting groove is formed in the sliding chute in a concave manner at a position close to the contraction end; two ends of the elastic limiting piece are respectively connected with the contraction end of the sliding chute and the end part of the foundation block; in an initial state, the elastic limiting piece limits the end part of the base block at the initial end of the sliding groove; when the base block is in a contraction state, the end part of the base block moves along the sliding groove to enable the elastic limiting part to be compressed and clamped into the limiting groove.
5. The storage container for lunar soil samples with variable inner diameter realizing three-axis compression locking according to any one of claims 2 to 4, wherein two ends of each basic block are respectively provided with a spherical sliding block, and the spherical sliding blocks are connected with the slope or the wedge slope in a sliding or rolling manner.
6. The storage container for lunar soil samples with the variable inner diameter for achieving three-axis compression locking is characterized in that the base block is a sector formed by cutting a cylinder along a tangent line with a preset angle, and the lug and the through groove are respectively positioned on two cutting surfaces of the sector.
7. The storage container for lunar soil samples with variable inner diameter for achieving three-axis compression locking according to any one of claims 2 to 4, wherein each of the foundation blocks is provided with at least two projections at one side and at least two through grooves at the other side.
8. The storage container of any one of claims 1 to 4, wherein the inner barrel comprises a deployable elastic sheet, and the elastic sheet is rolled into a partially overlapped cylindrical structure in an initial state.
9. The storage container for lunar soil samples with variable inner diameter for achieving three-axis compression locking according to any one of claims 1 to 4, wherein the sliding block is circumferentially provided with a ring of elastic rubber ring, and the elastic rubber ring is in contact with the inner side wall of the elastic inner barrel.
10. The storage container for lunar soil samples with variable inner diameter realizing triaxial compression locking according to any one of claims 1 to 4, wherein the upper sealing cover is provided with a ring-shaped sealing groove, the ring-shaped sealing groove is buckled at the upper end of the outer barrel, and the upper sealing cover abuts against the inner diameter shrinkage wedge block.
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WO2013192606A1 (en) * 2012-06-22 2013-12-27 Leica Biosystems Nussloch Gmbh Biopsy tissue sample transport device and method of using thereof
CN204439420U (en) * 2015-02-10 2015-07-01 福建拓普检测技术有限公司 A kind of Portable sampling device
CN207759293U (en) * 2017-11-06 2018-08-24 湖南云天检测技术有限公司 A kind of soil sample bottle transport case
CN208333999U (en) * 2018-03-21 2019-01-04 河南理工大学 A kind of double fissure rock triaxial compression test test piece moulds
JP7035854B2 (en) * 2018-06-29 2022-03-15 ニプロ株式会社 sampler
CN210774940U (en) * 2019-08-30 2020-06-16 江苏省水文地质工程地质勘察院 Three-axis sample preparation device for sandy soil
CN211148062U (en) * 2019-11-27 2020-07-31 西安科技大学 Triaxial compression test sampling device
CN111044440A (en) * 2019-12-31 2020-04-21 中国科学院空间应用工程与技术中心 Space material passive experiment sample supporting structure, sample module and test box

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