CN217180283U

CN217180283U - Fixing device assisting in stripping soil sample and film

Info

Publication number: CN217180283U
Application number: CN202220408362.4U
Authority: CN
Inventors: 侯顺平; 郭进军; 张永; 郑元勋; 潘世起; 陈小羊; 沈笑秋; 徐桃; 尹贺军; 李航
Original assignee: Zhengzhou University; China Construction Seventh Engineering Division Corp Ltd; Transportation Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Current assignee: Zhengzhou University; China Construction Seventh Engineering Division Corp Ltd; Transportation Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-12
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a fixing device for assisting in stripping a soil sample and a film, which comprises a sleeve sleeved on the soil sample; the clamping fasteners are arranged at the two ends of the sleeve and used for clamping the film of the soil sample, and the clamping fasteners are of necking structures and extrude the soil sample and the film to seal the end parts of the soil sample and the film; the sleeve is provided with a vent pipe for vacuumizing the sleeve. The utility model discloses a set up the cover sleeve and establish on soil sample to overlap the membrane upset on the sleeve, then carry the membrane through the centre gripping fastener and with soil sample tip and membrane extrusion adhesion together, make confined space between soil sample middle part and the membrane, be convenient for to evacuation in the sleeve, utilize the pressure difference of atmospheric pressure and airtight space to make soil sample and membrane take out from.

Description

Fixing device assisting in stripping soil sample and film

Technical Field

The utility model relates to a building test technical field especially indicates a help and peels off fixing device of soil sample and membrane.

Background

In the process of carrying out the triaxial test, after carrying out the consolidation drainage test, when taking out the soil sample test piece, can appear that the soil sample warp and partly embedding soil sample surface of membrane leads to the sample to be difficult to peel off with the soil sample, adopts original manual peeling off, and generally peel off the speed slower, and probably cause the damage of test piece when peeling off. And if the film is cut, the film is damaged, and resources are wasted. Therefore, it is more important to establish a simpler mode for peeling off the test piece at present.

Disclosure of Invention

To not enough among the above-mentioned background art, the utility model provides a help to peel off fixing device of soil sample and membrane has solved the problem that soil sample test piece and membrane are difficult to peel off among the prior art.

The technical scheme of the utility model is realized like this:

a fixing device for assisting in stripping a soil sample and a film comprises a sleeve sleeved on the soil sample; the clamping fasteners are arranged at the two ends of the sleeve and used for clamping the film of the soil sample, and the clamping fasteners are of necking structures and extrude the soil sample and the film to seal the end parts of the soil sample and the film; the sleeve is provided with a vent pipe for vacuumizing the sleeve.

Furthermore, the clamping fastener comprises a plastic cap sleeved at the end part of the sleeve and a sleeve cap detachably connected with the plastic cap, and a conical surface is arranged in the sleeve cap and is connected with the plastic cap in a matched mode.

Further, the sleeve cap is of a conical structure.

Furthermore, the plastic cap is provided with a retractable external thread connector, and the sleeve cap is internally provided with an internal thread matched with the external thread connector.

Further, a sealing strip is arranged between the sleeve and the plastic cap.

Furthermore, a check valve is arranged on the vent pipe.

Furthermore, a partition plate is arranged in the vent pipe and used for separating the vent pipe, and one-way valves are arranged on the pipe wall of one end, far away from the sleeve, of the vent pipe and the partition plate.

Further, the one-way valve comprises a mandril penetrating through the wall of the partition plate or the vent pipe; the wall of the partition board or the vent pipe is provided with a through hole for the ejector rod to pass through, and the through hole is in clearance fit with the ejector rod; one end of the ejector rod is connected with a rubber cap for controlling the opening and closing of the through hole, the other end of the ejector rod is provided with a top plate, and the top plate is connected with the partition plate or the wall of the vent pipe through a spring.

Furthermore, be equipped with the rubber tube that the evacuation pipe of being convenient for inserted in the breather pipe, be equipped with the convex surface that prevents that evacuation pipe drops in the rubber tube.

Furthermore, an annular groove and an annular convex belt which are matched with each other are arranged between the inner wall of the vent pipe and the rubber pipe.

The utility model has the advantages that: the utility model discloses a set up the cover sleeve and establish on soil sample to overlap the membrane upset on the sleeve, then carry the membrane through the centre gripping fastener and with soil sample tip and membrane extrusion adhesion together, make confined space between soil sample middle part and the membrane, be convenient for to evacuation in the sleeve, utilize the pressure difference of atmospheric pressure and airtight space to make soil sample and membrane take out from.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the plastic cap of the present invention;

FIG. 3 is a schematic view of the cap of the present invention;

fig. 4 is a schematic structural view of the sleeve of the present invention;

FIG. 5 is a schematic cross-sectional view of the vent pipe and the check valve of the present invention;

fig. 6 is a cross-sectional view of the rubber tube of the present invention;

fig. 7 is a cross-sectional view of the vent pipe end of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-7, the utility model discloses an embodiment 1 a help peel off fixing device of soil sample and membrane, including sleeve 3, sleeve 3 is used for the cover to establish on the soil sample after the triaxial test ends, then overlaps the port upset of soil sample outside membrane at sleeve 3 tip. Clamping fasteners are arranged at two ends of the sleeve 3 and used for clamping a film of a soil sample which is overturned and sleeved on the end part of the sleeve 3, the clamping fasteners are of a necking structure and extrude the end part of the soil sample and the film to form closed adhesion, and therefore a closed space is formed between the middle part of the soil sample and the film; the sleeve 3 is provided with a vent pipe 4 for vacuumizing the sleeve 3, and the soil sample is separated from the membrane by utilizing the pressure difference between atmospheric pressure and the closed space.

Further, as shown in fig. 2 and fig. 3, the clamping fastener comprises a plastic cap 2 sleeved on the end of the sleeve 3 and a cap 1 detachably connected with the plastic cap 2, and a conical surface is arranged in the cap 1 and is connected with the plastic cap 2 in a matching manner. In this embodiment, the cap 1 has a conical structure.

Specifically, the plastic cap 2 is provided with a retractable external thread connector, and the retractable is realized by adopting a plastic material for the plastic cap 2. Be equipped with in the cover cap 1 with external screw thread connector complex internal thread, through toper structure and external screw thread connector connection for the external screw thread connector contracts, extrudees soil sample and membrane, makes the tip of soil sample and membrane extrusion form confined bonding. In addition, in the using process of the device, water can be continuously poured between the plastic cap 2 and the sleeve 3, and the sealing property between the film and the soil sample is increased.

Embodiment 2, which differs from embodiment 1 in that a sealing strip is provided between the sleeve 3 and the plastic cap 2.

Embodiment 3 differs from embodiment 1 in that a check valve is provided on the breather pipe 4.

Embodiment 4 is different from embodiment 3 in that, as shown in fig. 4 and 5, a partition plate 42 is provided in the vent pipe 4 for blocking the vent pipe 4, a check valve is provided on a pipe wall of an end, i.e., an outer end, of the vent pipe 4 away from the sleeve 3, and the partition plate 42 is also provided with a check valve.

Example 5, which differs from example 4 in that in this example the suction device used is a syringe. The number of the one-way valves is two, and one-way valve comprises a mandril 5 which penetrates through the partition plate 42; the partition plate 42 is provided with a through hole for the mandril 5 to pass through, and the through hole is in clearance fit with the mandril 5; one end of the mandril 5 far away from the sleeve 3 is connected with a rubber cap 7 for controlling the opening and closing of the through hole, and the other end is provided with a top plate. The through hole can be closed when the rubber cap 7 is in contact fit with the partition plate 42, and the through hole is opened when the rubber cap 7 is far away from the partition plate 42; the top plate is connected to the partition plate 42 by a spring 6. When air is pumped out through the needle cylinder, the top plate moves outwards to jack the rubber cap 7 through the ejector rod 5, and the gas in the sleeve 3 comes out.

The other one-way valve comprises a mandril 5 which penetrates through the wall of the vent pipe; the wall of the vent pipe is provided with a through hole for the mandril 5 to pass through, and the through hole is in clearance fit with the mandril 5; one end of the ejector rod 5, which is positioned outside the vent pipe 4, is connected with a rubber cap 7 for controlling the opening and closing of the through hole, and the other end is provided with a top plate which is connected with the pipe wall of the vent pipe through a spring 6; the through hole can be sealed when the rubber cap 7 is in contact fit with the outer side pipe wall of the breather pipe 4, and the through hole is opened when the rubber cap 7 is far away from the pipe wall of the breather pipe. When the needle cylinder is pushed inwards, the top plate of the one-way valve on the pipe wall of the vent pipe moves outwards to prop open the rubber cap 7 through the ejector rod 5, and gas pushed inwards by the needle cylinder is exhausted from the through hole.

Embodiment 5, as shown in fig. 6, is different from embodiment 1 in that a rubber tube 8 for facilitating insertion of the evacuation tube is provided in the vent tube 4, and a convex surface for preventing the evacuation tube from falling off is provided in the rubber tube 8. In this embodiment, the rubber tube 8 has an hourglass-shaped structure, and the convex surface at the neck of the hourglass-shaped structure can prevent the evacuation tube from falling off.

Embodiment 6 is different from embodiment 4 in that, as shown in fig. 6 and 7, a matching annular groove 41 and an annular convex belt 81 are provided between the inner wall of the breather pipe 4 and the rubber pipe 8 for fixing the rubber pipe 8. In other embodiments, the vent tube 4 and the rubber tube 8 may be fixed by adhesion.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixing device for assisting in peeling off a soil sample and a film is characterized in that: comprises a sleeve (3) sleeved on a soil sample; clamping fasteners are arranged at two ends of the sleeve (3) and used for clamping a film of the soil sample, and the clamping fasteners are necking structures and extrude the soil sample and the film to seal the end parts of the soil sample and the film; the sleeve (3) is provided with a vent pipe (4) for vacuumizing the sleeve (3).

2. The apparatus for assisting in peeling off a soil sample from a membrane according to claim 1, wherein: the clamping fastener comprises a plastic cap (2) sleeved at the end of the sleeve (3) and a sleeve cap (1) detachably connected with the plastic cap (2), and a conical surface is arranged in the sleeve cap (1) and is connected with the plastic cap (2) in a matched mode.

3. The apparatus for assisting in peeling off a soil sample from a membrane according to claim 2, wherein: the sleeve cap (1) is of a conical structure.

4. The apparatus for assisting in peeling off a soil sample and a membrane according to claim 2 or 3, wherein: the plastic cap (2) is provided with a retractable external thread connector, and the sleeve cap (1) is internally provided with an internal thread matched with the external thread connector.

5. The device for assisting in peeling off a soil sample from a membrane according to claim 4, wherein: and a sealing strip is arranged between the sleeve (3) and the plastic cap (2).

6. The fixing device for assisting in peeling off a soil sample and a film according to claim 2, 3 or 5, wherein: the breather pipe (4) is provided with a one-way valve.

7. The device for assisting in peeling off a soil sample from a membrane according to claim 6, wherein: a partition plate (42) is arranged in the vent pipe (4) and used for separating the vent pipe (4), and one-way valves are arranged on the pipe wall of one end, far away from the sleeve (3), of the vent pipe (4) and the partition plate (42).

8. The device for assisting in peeling off a soil sample from a membrane according to claim 7, wherein: the one-way valve comprises a mandril (5) which penetrates through the partition plate (42) or the pipe wall of the vent pipe; the partition plate (42) or the pipe wall of the vent pipe is provided with a through hole for the ejector rod (5) to pass through, and the through hole is in clearance fit with the ejector rod (5); one end of the ejector rod (5) is connected with a rubber cap (7) for controlling the opening and closing of the through hole, the other end of the ejector rod is provided with a top plate, and the top plate is connected with the partition plate (42) or the pipe wall of the vent pipe through a spring (6).

9. The device for assisting in peeling off a soil sample and a membrane according to claim 2, 3, 5, 7 or 8, wherein: be equipped with in breather pipe (4) and be convenient for evacuation pipe male rubber tube (8), be equipped with in rubber tube (8) and prevent the convex surface that evacuation pipe drops.

10. The apparatus for assisting in peeling off a soil sample from a membrane according to claim 9, wherein: and an annular groove (41) and an annular convex belt (81) which are matched with each other are arranged between the inner wall of the vent pipe (4) and the rubber pipe (8).