CN112758529B

CN112758529B - Sample storage device

Info

Publication number: CN112758529B
Application number: CN202011545671.8A
Authority: CN
Inventors: 代志鹏; 秦海霞; 苏化普; 蔡凌月; 吕凌展
Original assignee: Guangzhou Radio And Television Measurement Test Co ltd
Current assignee: Radio And Television Measurement And Testing Wuxi Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2022-11-25
Anticipated expiration: 2040-12-24
Also published as: CN112758529A

Abstract

The invention discloses a sample storage device, comprising: the device comprises an impact box and a pushing mechanism matched with the impact box; the impact box comprises a box body and a box cover matched with the box body, and a first pushing hole and a first sample outlet are formed in the wall surface of the box body; the first pushing hole and the first sample outlet are arranged close to the side where the bottom of the box body is located, and the side where the bottom of the box body is located is the side opposite to the box cover; the pushing mechanism is movably arranged outside the box body and is in inserting fit with the first pushing hole. The sample storage device provided by the invention is convenient and rapid to sample, the testing efficiency is improved, and meanwhile, the box cover does not need to be opened during sampling, so that the heat circulation with the outside is reduced, the heat exchange rate is reduced, and the rapid temperature rise in the box body caused by large-area heat exchange with the outside is avoided, and the heat preservation effect is influenced.

Description

Sample storage device

Technical Field

The invention relates to the field of material detection, in particular to a sample storage device.

Background

The low-temperature impact of the simply supported beam/cantilever beam is realized by placing a sample into an impact box, preserving the sample in a low-temperature freezer for a certain time, and carrying out the low-temperature impact test on the sample taken out of the impact box after the sample is fully frozen. In the actual test, because the sample needs to maintain low temperature for a long time, the temperature of the sample can be rapidly increased, the temperature change is large, the heat preservation effect is poor, and the accuracy and the reliability of the test result are influenced in the actual use process of the currently used impact box; and meanwhile, the sampling is inconvenient, so that the testing efficiency is influenced.

Disclosure of Invention

Based on the above, the invention overcomes the defects that the impact box in the prior art can cause the rapid rise of the temperature of the sample, large temperature change and poor heat preservation effect in the actual use process, and the accuracy and the reliability of the test result are influenced; and simultaneously, the sample is inconvenient to influence the defect of the testing efficiency, and the sample storage device is provided.

The technical scheme is as follows:

a sample retention device comprising: the device comprises an impact box and a pushing mechanism matched with the impact box; the impact box comprises a box body and a box cover matched with the box body, and a first pushing hole and a first sample outlet are formed in the wall surface of the box body; the first pushing hole and the first sample outlet are arranged close to the side where the bottom of the box body is located, and the side where the bottom of the box body is located is the side opposite to the box cover; the pushing mechanism is movably arranged outside the box body and is in inserting fit with the first pushing hole.

The sample save set of this technical scheme not only makes things convenient for quick sample, improves efficiency of software testing, and the while sample need not to open the lid, so reduce with external heat flow, reduce heat exchange rate, avoid leading to the temperature in the box body to rise rapidly with external large tracts of land heat transfer, influence the heat preservation effect.

Specifically, when this technical scheme uses, open the lid, will wait to freeze the sample and put into the box body, the common situation is that a plurality of samples are range upon range of in the box body and are placed, and the opposite ends of the sample of bottom align first propelling movement hole and first appearance mouth respectively, and the length, the width size of first appearance mouth all are greater than the length, the width size of single sample, so the sample can be taken out from first appearance mouth. After the sample is placed, put into the low temperature freezer with sample save set and preserve the certain time, treat that the sample fully freezes after, take out sample save set from the low temperature freezer, insert to first propelling movement hole through push mechanism to promote the sample of the bottommost layer in the box body, make the sample of bottommost layer move from first propelling movement hole to the direction of first appearance mouth, the sample stretches out from first appearance mouth, the testing personnel take out the sample and carry out relevant test can. And the original sample at the second bottom layer naturally descends under the action of gravity due to losing the support to become the sample at the bottommost layer, and waits for the next sampling test. Because this technical scheme's sampling process need not to open the lid, only need release the sample from first appearance mouth through push mechanism, thereby avoid the inside cold air of box body and external large tracts of land convection and the cold air that runs off, the heat preservation effect has been promoted, simultaneously through push mechanism and first propelling movement hole, the cooperation of first appearance mouth, it is convenient to make the sample, need not pass through a series of actions such as uncapping, the sample, the lid closes, make the efficiency of taking out of sample promote, thereby promote efficiency of software testing.

In one embodiment, different samples can be placed in the box body according to different test standards, so that in order to enable the samples of various specifications to be stacked in the box body in a preset manner and ensure that the pushing mechanism can effectively push the samples out of the first sample outlet, the sample storage device further comprises a sample box which is arranged in the impact box and used for positioning and storing the samples, two opposite side walls of the sample box are respectively provided with a second pushing hole and a second sample outlet, and the second pushing hole and the second sample outlet are arranged close to the side of the bottom of the sample box; the second pushing hole and the first pushing hole are correspondingly arranged, and the second sample outlet and the first sample outlet are correspondingly arranged. When the samples need to be stored, the samples are placed in the sample box, the inner contour of the storage cavity of the sample box is matched with the outer contour of the samples, and the samples can be effectively stacked when placed in the sample box. And the second sample outlet and the second pushing hole of the sample box are respectively arranged corresponding to the first sample outlet and the first pushing hole, so that when the pushing mechanism pushes the sample, the sample can sequentially pass through the first pushing hole and the second pushing hole, the sample is pushed, and the sample is sequentially taken out through the second sample outlet and the first sample outlet.

In one embodiment, in order to facilitate the placement of the sample and save consumables, the cross section of the sample box is in a groove shape, and positioning grooves for positioning the sample are respectively arranged on two opposite sides of the sample box. The structure is similar to that of C-shaped steel, and two opposite ends of the sample are clamped and positioned through positioning grooves on two opposite sides.

In one embodiment, the positioning grooves are U-shaped grooves or C-shaped grooves, the two positioning grooves are symmetrically arranged, the length of the sample is matched with the distance between the bottoms of the two positioning grooves, and the width of the sample is matched with the groove width of the positioning grooves.

In one embodiment, since the sample box needs to be placed into the impact box after the sample is placed into the sample box, in the same way, the sample box needs to be taken out of the impact box after the sample is emptied, and the side of the top of the sample box is also provided with the lifting part; the side where the top of the sample box is located is the side opposite to the side where the bottom of the sample box is located.

In one embodiment, the lifting portion is a lug disposed on the top of the sample box, and the operator can lift the lug to remove the entire sample box from the impact box.

In one embodiment, the lug is provided with a lifting hole, so that fingers of an operator can penetrate the lug conveniently, and the lifting is further facilitated.

In one embodiment, the impact box can be matched with sample boxes with different specifications, so that the sample boxes with different specifications can store samples with different specifications, the application range of the impact box is widened, and the inner cavity for accommodating the sample boxes is larger, and the sample boxes with the largest size can be accommodated in the impact box. In order to avoid the tilting or the deviation of the sample box caused by the shaking of the sample box with smaller size specification after being placed in the impact box, the sample storage device also comprises a filling piece filled between the outer wall of the sample box and the inner wall of the impact box. By filling the filler between the sample box and the impact box, the stability between the sample box and the impact box is enhanced.

In one embodiment, the filling member is a soft PU block, which has high elasticity and can fully fill the gap between the sample box and the impact box, and meanwhile, the PU material has low thermal conductivity, so that the filling member with low thermal conductivity is not easy to exchange heat with the outside after the impact box is taken out of the low-temperature freezer, thereby further ensuring the thermal insulation performance of the sample storage device of the present embodiment.

In one embodiment, the box body comprises at least two layers of heat-insulating layers which are arranged in a nested manner; and/or the box cover comprises at least two layers of heat-insulating layers which are nested. And a composite heat insulation structure is formed, so that the heat insulation performance of the impact box is improved, and the impact box is prevented from being heated too fast after being taken out from the low-temperature freezer, and the test effect of a sample in the sample box is influenced.

In one embodiment, the box body and the box cover are of a three-layer composite structure formed by nesting three insulating layers, wherein the three insulating layers are an EPS layer, a PU layer and a PMMA layer respectively, and the three insulating layers are low-thermal-conductivity-coefficient material layers.

In one embodiment, the pushing mechanism includes a pressing sleeve disposed on an outer wall of the box body and corresponding to the first pushing hole, and a push rod connected to an inner wall of the pressing sleeve, which is far away from the first pushing hole, and aligned with the first pushing hole. Pressing sleeve's open end and box body outer wall connection, and first propelling movement hole is located the coverage of open end to make push rod and first propelling movement hole align, when needs sample, operating personnel presses the pressing sleeve, makes the push rod to the direction motion in first propelling movement hole, finally penetrates first propelling movement hole and second propelling movement hole in proper order, releases the sample from strikeing the box. For the convenience of pressing, the pressing sleeve is a soft sleeve.

In one embodiment, the sampling rate is increased, the testing efficiency is improved, the pushing mechanism further comprises a return spring sleeved outside the pushing rod, and the outer diameter of the return spring is larger than the aperture of the first pushing hole. When the sample, operating personnel presses down and presses the sleeve, makes the reset spring compression, and after once the sample was ended, operating personnel loosened and pressed the sleeve, and reset spring's restoring force rebounds initial position with the push rod, need not the manual push rod of extracting, simplifies operating personnel's operation, promotes efficiency of software testing.

In one embodiment, a positioning piece for fixing the impact box is arranged on the impact box.

In one embodiment, the positioning element includes a positioning hole disposed at the bottom of the box body.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a sample storage apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a sample retention device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cartridge according to an embodiment of the present invention;

FIG. 4 is a schematic view of a use state of the sample storage apparatus according to the embodiment of the present invention.

Description of reference numerals:

10. an impact box; 11. a box body; 12. a box cover; 13. a first push aperture; 14. a first sample outlet; 15. a positioning member; 20. a pushing mechanism; 21. pressing the sleeve; 22. a push rod; 23. a return spring; 30. a sample cartridge; 31. a second push hole; 32. a second sample outlet; 33. positioning a groove; 34. a pulling section; 341. a lug; 342. and (5) lifting and pulling the hole.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

A sample retention device as shown in figure 1, comprising: the impact box 10 and a pushing mechanism 20 matched with the impact box 10; the impact box 10 comprises a box body 11 and a box cover 12 matched with the box body 11, wherein a first pushing hole 13 and a first sample outlet 14 are formed in the wall surface of the box body 11; specifically, the first pushing hole 13 and the first sample outlet 14 of the present embodiment are respectively located on two opposite side wall surfaces of the box body 11, the first pushing hole 13 and the first sample outlet 14 are both disposed adjacent to the side where the bottom of the box body 11 is located, and the side where the bottom of the box body 11 is located is the side opposite to the box cover 12; the pushing mechanism 20 is movably arranged outside the box body 11 and is in penetrating fit with the first pushing hole 13.

The sample save set of this embodiment not only makes things convenient for quick sample, improves efficiency of software testing, and the sample need not to open lid 12 simultaneously, so reduce with external heat flow, reduce heat exchange rate, avoid leading to the temperature in the box body 11 to rise rapidly with external large tracts of land heat transfer, influence the heat preservation effect.

Specifically, in the present embodiment, when the box cover 12 is opened, a sample to be frozen is placed in the box body 11, typically, a plurality of samples are stacked in the box body 11, two opposite ends of the sample at the bottom layer are aligned with the first pushing hole 13 and the first sample outlet 14, respectively, and the length and width dimensions of the first sample outlet 14 are larger than those of a single sample, so that the sample can be taken out from the first sample outlet 14. After the sample is placed, put into the low temperature freezer with the sample save set and preserve the certain time, after the sample fully freezes, take out the sample save set from the low temperature freezer, insert to first propelling movement hole 13 through push mechanism 20 to promote the sample of the bottom in the box body 11, make the sample of bottom move to the direction of first appearance mouth 14 from first propelling movement hole 13, the sample stretches out from first appearance mouth 14, the experimenter takes out the sample and carries out relevant test can. And the original sample at the second bottom layer naturally descends under the action of gravity due to losing the support to become the sample at the bottommost layer, and waits for the next sampling test. Because the sampling process of this embodiment need not to open lid 12, only need push out the sample from first appearance mouth 14 through push mechanism 20, thereby avoid the inside cold air of box body 11 and external large tracts of land convection and run off the cold air, the heat preservation effect has been promoted, simultaneously through push mechanism 20 and first propelling movement hole 13, the cooperation of first appearance mouth 14, it is convenient to make the sample, need not pass through a series of actions such as uncapping, the sample, the lid closes, make the efficiency of taking out of sample promote, thereby promote efficiency of software testing.

As shown in fig. 3 to 4, different samples can be placed in the case 11 according to different test standards, so that samples of various specifications can be stacked in the case 11 in a predetermined manner, and the pushing mechanism 20 can effectively push the samples out of the first sample outlet 14, the sample storage device further includes a sample case 30 disposed in the impact box 10 and used for positioning and storing the samples, two opposite side walls of the sample case 30 are respectively provided with a second pushing hole 31 and a second sample outlet 32, and the second pushing hole 31 and the second sample outlet 32 are both disposed adjacent to the side of the bottom of the sample case 30; the second pushing hole 31 is arranged corresponding to the first pushing hole 13, and the second sample outlet 32 is arranged corresponding to the first sample outlet 14.

Specifically, different sample boxes 30 are provided according to different sample specifications, the number of the sample boxes 30 is at least two, and the sample boxes 30 with corresponding specifications can be prepared in advance for standby, so that positioning storage of samples with different specifications is met. When a sample needs to be stored, the sample is put into the sample box 30, the inner contour of the storage cavity of the sample box 30 is matched with the outer contour of the sample, and the sample can be effectively stacked when being put into the sample box 30. And the second sample outlet 32 and the second pushing hole 31 of the sample box 30 are respectively arranged corresponding to the first sample outlet 14 and the first pushing hole 13, so that when the pushing mechanism 20 pushes the sample, the sample can sequentially pass through the first pushing hole 13 and the second pushing hole 31 to push the sample, so that the sample can sequentially pass through the second sample outlet 32 and the first sample outlet 14 and is finally taken out.

In this embodiment, the pushing mechanism 20 includes a pressing sleeve 21 disposed on an outer wall of the box 11 and corresponding to the first pushing hole 13, and a push rod 22 connected to an inner wall of the pressing sleeve 21 away from the first pushing hole 13 and aligned to the first pushing hole 13. The open end of pressing

sleeve

21 and 11 outer wall connections of box body, and first propelling movement hole 13 is located the coverage of open end to make push rod 22 aim at with first propelling movement hole 13, when needs sample, operating personnel presses pressing sleeve 21, makes push rod 22 move to the direction of first propelling movement hole 13, finally penetrates first propelling movement hole 13 and second propelling movement hole 31 in proper order, pushes out the sample from strikeing box 10. For the convenience of pressing, the pressing sleeve 21 is a soft sleeve.

In addition, in order to accelerate the sampling rate and improve the testing efficiency, the pushing mechanism 20 of the present embodiment further includes a return spring 23 sleeved outside the pushing rod, and the outer diameter of the return spring 23 is greater than the aperture of the first pushing hole 13. When the sample, operating personnel presses down and presses sleeve 21, makes reset spring 23 compress, after once the sample, operating personnel loosens and presses sleeve 21, and reset spring 23's restoring force rebounds initial position with push rod 22, need not manual pull-out push rod 22, simplifies operating personnel's operation, promotes efficiency of software testing.

For the convenience of placing the sample and saving consumables, the cross section of the sample box 30 is groove-shaped, and two opposite sides of the sample box 30 are respectively provided with a positioning groove 33 for positioning the sample. I.e. similar to the structure of C-section steel, the two opposite ends of the sample are clamped and positioned by the positioning grooves 33 on the two opposite sides. Since the sample is usually a rectangular block structure, the positioning grooves 33 of this embodiment are U-shaped grooves or C-shaped grooves, the two positioning grooves 33 are symmetrically arranged, the length of the sample matches the distance between the bottoms of the two positioning grooves 33, and the width of the sample matches the width of the positioning grooves 33.

In other embodiments, the cartridge 30 may also be an open box-like structure, the opening and the interior cavity of the open box matching the size of the sample.

Since the sample box 30 needs to be placed into the impact box 10 after the sample is placed in the sample box 30, and similarly, the sample box 30 needs to be taken out from the impact box 10 after the sample is emptied, the side of the top of the sample box 30 in the embodiment is also provided with a pulling part 34 convenient for an operator to pull; the top side of the cartridge 30 is the side opposite to the bottom side of the cartridge 30.

Specifically, the lifting portion 34 is a lug 341 provided at the top of the sample cartridge 30, and an operator can take out the entire sample cartridge 30 from the impact box 10 by lifting the lug 341. In addition, a lifting hole 342 can be formed in the lug 341, so that an operator can conveniently insert fingers into the lifting hole, and the lifting is further facilitated.

Since the impact box 10 of the present embodiment can be matched with the sample boxes 30 of different specifications, so that the sample boxes 30 of different specifications can store samples of different specifications, and the application range of the impact box 10 is increased, the inner cavity of the impact box 10 for accommodating the sample boxes 30 is larger, and the impact box 10 can accommodate the sample box 30 of the largest size specification. In order to prevent the small-sized sample cell 30 from tilting or shifting due to shaking after being placed in the impact cell 10, the sample storage device according to the present embodiment further includes a filling member filled between an outer wall of the sample cell 30 and an inner wall of the impact cell 10. Stability between the cartridge 30 and the impact box 10 is enhanced by filling a filler between the cartridge 30 and the impact box 10. Specifically, the filler of the present embodiment is a soft PU block, which has a large elasticity, and can fully fill the gap between the sample cell 30 and the impact cell 10, and meanwhile, the PU material has a low thermal conductivity, so that after the impact cell 10 is taken out of the low-temperature freezer, the filler with a low thermal conductivity is not easily subjected to heat exchange with the outside, thereby further ensuring the thermal insulation performance of the sample storage device of the present embodiment. In other embodiments, the filling member may be other low thermal conductivity material, and the shape is adjusted according to the actual gap.

As shown in fig. 2, in order to ensure the thermal insulation performance of the impact box 10, the box body 11 of the present embodiment includes at least two nested layers of thermal insulation layers, and forms a composite thermal insulation structure by setting more than one layer of thermal insulation layers, so as to improve the thermal insulation performance of the impact box 10, and avoid the impact box 10 from being taken out of the low-temperature freezer and then heated up too fast, thereby affecting the test effect of the sample in the sample box 30.

Similarly, the box cover 12 includes at least two layers of heat insulation layers which are nested, so as to further ensure the heat insulation performance of the impact box 10.

Specifically, the box body 11 and the box cover 12 of the embodiment are both of a three-layer composite structure in which three heat-insulating layers are nested, the three heat-insulating layers are respectively an EPS layer, a PU layer and a PMMA layer, and the three heat-insulating layers are all low-thermal-conductivity material layers.

The box cover 12 and the box body 11 of the embodiment are matched through the mortise and tenon structure, so that the box cover 12 and the box body 11 are effectively closed, the overall sealing performance of the impact box 10 is improved, and the heat preservation effect of the impact box 10 is prevented from being influenced by the untight combination at the contact part of the box cover 12 and the box body 11.

In order to facilitate taking out the parts and improve the part taking efficiency, the positioning part 15 for fixing the impact box 10 is arranged on the impact box 10 in the embodiment. That is, after the impact box 10 is taken out of the low-temperature freezer, the impact box 10 is fixed by the positioning member 15, and then the pushing mechanism 20 is pressed to push out the sample from the first sample outlet 14, so that the positioning member 15 maintains the stability of the impact box 10 during sampling, the sampling rate is increased, and the testing efficiency is improved.

Specifically, the locating piece 15 is including locating the locating hole of the bottom of box body 11, the quantity of locating hole is four, four the locating hole is with four angle one-to-one of box body 11, uses through locating hole and outside reference column cooperation, reaches the positioning action to strikeing box 10. Namely, the positioning column matched with the positioning hole is arranged outside, and when the impact box 10 needs to be fixed, the positioning hole is in plug-in fit with the positioning column, so that the impact box 10 is fixed.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

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 device or element must have a particular orientation, be constructed and operated in a particular orientation, and are 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 explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; 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," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean 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.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment. The invention discloses a sample storage device, comprising: the device comprises an impact box and a pushing mechanism matched with the impact box; the impact box comprises a box body and a box cover matched with the box body, and a first pushing hole and a first sample outlet are formed in the wall surface of the box body; the first pushing hole and the first sample outlet are arranged close to the side where the bottom of the box body is located, and the side where the bottom of the box body is located is the side opposite to the box cover; the pushing mechanism is movably arranged outside the box body and is in insertion fit with the first pushing hole. The sample storage device provided by the invention is convenient and rapid to sample, the testing efficiency is improved, and meanwhile, the box cover does not need to be opened during sampling, so that the heat circulation with the outside is reduced, the heat exchange rate is reduced, and the rapid temperature rise in the box body caused by large-area heat exchange with the outside is avoided, and the heat preservation effect is influenced.

Claims

1. A sample retention device, comprising: the device comprises an impact box and a pushing mechanism matched with the impact box; the impact box comprises a box body and a box cover matched with the box body, and a first pushing hole and a first sample outlet are formed in the wall surface of the box body; the box body comprises at least two layers of heat-insulating layers which are nested; and/or the box cover comprises at least two layers of heat-insulating layers which are nested; the first pushing hole and the first sample outlet are arranged close to the side where the bottom of the box body is located, and the side where the bottom of the box body is located is the side opposite to the box cover; the pushing mechanism is movably arranged outside the box body and is in insertion fit with the first pushing hole, and a positioning piece for fixing the impact box is arranged on the impact box;

the impact box is provided with at least two sample boxes for positioning and storing samples, the two sample boxes are used for storing samples with different specifications, two opposite side walls of the sample boxes are respectively provided with a second pushing hole and a second sample outlet, and the second pushing hole and the second sample outlet are arranged close to the side where the bottom of the sample box is located; the second pushing hole corresponds to the first pushing hole, and the second sample outlet corresponds to the first sample outlet.

2. The sample retention device of claim 1, wherein the cartridge is configured to have a recessed cross-section, and wherein the cartridge has positioning grooves on opposite sides thereof for positioning the sample.

3. The sample retention device of claim 1, wherein a pull portion is further provided on the top side of the cartridge; the side where the top of the sample box is located is the side opposite to the side where the bottom of the sample box is located.

4. The sample retention device of claim 3, wherein the pull portion is a tab disposed on the top of the cartridge, the tab having a pull aperture disposed thereon.

5. The sample retention device of claim 2, further comprising a filler member that fills between the outer wall of the cartridge and the inner wall of the strike cartridge.

6. The sample preservation device according to claim 1, wherein the box body and the box cover are both of a three-layer composite structure with three insulation layers nested, and the three insulation layers are an EPS layer, a PU layer and a PMMA layer respectively.

7. The sample holder according to claim 1, wherein the pushing mechanism comprises a pressing sleeve disposed on an outer wall of the case and corresponding to the first pushing hole, and a pushing rod connected to an inner wall of the pressing sleeve away from the first pushing hole and aligned with the first pushing hole.

8. The specimen containment device of claim 7, wherein the push mechanism further comprises a return spring disposed outside the push rod, wherein an outer diameter of the return spring is greater than a diameter of the first push aperture.

9. The sample retention device of claim 1, wherein the positioning element comprises a positioning hole disposed at the bottom of the cartridge body.

10. The sample retention device of claim 1, wherein the lid and the body are configured to mate via a mortise and tenon joint.