CN212553622U

CN212553622U - Simple and easy geotechnique triaxial test many sizes sample mould demolish device

Info

Publication number: CN212553622U
Application number: CN202021350808.XU
Authority: CN
Inventors: 朱豪伟; 刘长武; 吴呈哲
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-02-19
Anticipated expiration: 2030-07-10

Abstract

The utility model relates to a simple geotechnical triaxial test multi-size sample mold dismantling device, which comprises a supporting frame, a sample mold, a mold dismantling combined ring, a sample fixer, a sample fixing piece, a guide rod, a lifting rod and a lifting rod handle, wherein the supporting frame comprises a base, a vertical support rod is fixed on the base, the top end of the vertical support rod is connected with a top plate, the top plate is provided with a hole allowing the lifting rod to move up and down, the upper end of the lifting rod is connected with the handle, the lower end of the lifting rod is connected with the mold dismantling combined ring, the mold dismantling combined ring can bear the mold and slide up and down along the guide rod to dismantle the mold, the sample is fixed by an upper end fixer, the fixer is connected with the top plate through a threaded rod and can be adjusted up and down, and the upper end can pass through the handle. The practicability is strong, the operation is convenient, and the popularization is worth.

Description

Simple and easy geotechnique triaxial test many sizes sample mould demolish device

Technical Field

The utility model relates to a civil engineering equipment technical field, concretely relates to simple and easy many sizes of geotechnique triaxial test sample mould demolish device.

Background

In civil engineering laboratory tests, geotechnical triaxial tests can be divided into 3 test types of non-consolidation non-drainage shears, consolidation non-drainage shears and non-consolidation drainage shears according to drainage conditions, are important test means for researching the physical and mechanical properties of soil, and test results have important theoretical and practical significance for soil mechanics and actual engineering research.

The triaxial test sample is cylindrical, the diameter of the sample is generally 39.1mm, 61.8mm and 101.0mm according to the particle size of the soil sample, the ratio of the height to the diameter is 2-2.5, and the disturbed soil sample is prepared by adopting a layered compaction method. In the prior art, a sample die is generally made of metal, the die is disassembled after compaction, the die is generally directly broken by hands, then a soil sample is placed into a test device, the soil sample is easy to crack or even damage in the process, the completeness of the sample is difficult to ensure, the accuracy of a test result is seriously affected, the sample has different sizes, the efficiency is low when the die is disassembled, and the operation is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model provides a simple and easy geotechnique triaxial test many sizes sample mould demolishs device to solve the problem that proposes in the above-mentioned background art.

The technical scheme of the utility model is that: the utility model provides a device is demolishd to simple and easy geotechnological triaxial test many sizes sample mould, including braced frame, braced frame includes the base, be fixed with vertical support bar on the base, the roof is connected on the vertical support bar top, the roof is provided with the hole that allows the lift bar to reciprocate, the lift bar upper end is connected with the handle, the lower extreme is demolishd the combination ring with the mould and is linked to each other, the mould is demolishd the combination ring and can bear the sample mould and slide from top to bottom along the guide bar in order to demolish the mould, the sample is fixed by the upper end fixer, the fixer passes through the threaded rod and links to each other with.

Preferably, the combined circular ring for mold removal is formed by overlapping an outer ring, a middle ring and an inner ring, wherein the inner diameter of the inner ring is 39.1mm, the inner diameter of the middle ring is 61.8mm, the inner diameter of the outer ring is 101mm, the three circular rings are matched in size and can be used in an overlapping mode, the number of the circular rings is increased or decreased according to the size of a sample, the three rings are simultaneously overlapped and used when the diameter of the sample is 39.1mm, only the middle ring and the outer ring are used in an overlapping mode when the diameter is 61.8mm, and only the outer ring is used when the diameter of the sample is. The ring all is provided with not unidimensional mould assorted protruding ring in order to fix the mould, guarantees that the mould can not incline and drop demolising the in-process.

Preferably, the outer loop includes from inside to outside fixed ring one and protruding ring two in proper order, ring one is coaxial with protruding ring two, the internal diameter of protruding ring two and the mould phase-match of diameter 101mm sample, the internal diameter of ring one and diameter 101 mm's sample stationary blade and sample phase-match, the outside of outer loop is provided with hole and screw hole, and the guide bar passes this hole and makes the outer loop can slide from top to bottom along the guide bar, and the lifting rod passes through the screw hole and is connected with the outer loop.

Preferably, the sample fixer is formed by connecting threaded rod and the disc of bottom area recess, and the hole of threaded rod upper end accessible handle guarantees can not conflict with the handle, and the threaded rod middle part is passed through the screw thread and is connected with the screw hole of roof, thereby can adjust and through compressing tightly sample stationary blade one fixed sample downwards from top to bottom according to the sample height, guarantees that the in-process sample can not rock demolishd at the mould.

Preferably, the first sample fixing piece and the second sample fixing piece are consistent with the diameter of the sample, the sample fixing piece and the second sample fixing piece are matched with the sample fixer to work, the stress of the sample is uniform in the process of removing the die, the first sample fixing piece and the second sample fixing piece can be replaced by the permeable plate or the impermeable plate according to the type of the test, the fixing pieces and the sample can be taken out together after the die is removed, and the sample is guaranteed not to be damaged in the transfer process.

The utility model has the advantages that: the mold dismantling device fixes the sample through the sample upper end fixer and the fixing piece, and ensures that the sample is not influenced when the mold is dismantled; the fixing piece can select a water permeable plate or a water impermeable plate with corresponding size according to the test type, and the water permeable plate or the water impermeable plate and the sample can be taken out after the sample mold is disassembled, so that the sample is not damaged in the transfer process, and the sample preparation accuracy is ensured; the number of the removed moulds can be increased or reduced, the device is suitable for three samples with different diameters commonly used in a triaxial test for geotechnical engineering, and the operation is convenient; the mould is demolishd and is had the bulge loop that matches with the mould on the ring, guarantees that the mould can not incline or drop upwards demolishs the in-process.

Drawings

Fig. 1 is a schematic structural diagram of the main components of the present invention.

Fig. 2 is a schematic structural view of the sample holder of the present invention.

Fig. 3 is a schematic view of the mold and the sample fixing plate of the present invention.

Fig. 4 is the utility model discloses a mould is demolishd and is made up ring section structure sketch map.

Fig. 5 is the sectional structure diagram of the outer ring of the combined ring for removing the mold of the present invention.

Fig. 6 is the sectional structure diagram of the middle ring of the combined circular ring for disassembling the mold of the utility model.

Fig. 7 is the utility model discloses a mould demolishs combination ring inner ring profile structure sketch map.

Description of reference numerals: 1. a support frame; 2. a top plate; 3. a vertical support bar; 4. a base; 5. the combined ring is removed from the mould; 6. the mold is disassembled to form a combined circular ring outer ring; 7. the mold is disassembled to form a combined circular ring middle ring; 8. the mold is disassembled to form the combined circular ring inner ring; 9. a grip; 10. a lifting bar; 11. a holder; 12. a guide bar; 13. a sample mold; 14. a first fixing sheet; 15. a second fixing sheet; 601. a second convex ring; 602. a first circular ring; 603. a first cylindrical hole; 701. a second circular ring; 702. a first convex ring; 703. a third circular ring; 704. a second cylindrical hole; 801. a ring IV; 802. a third raised ring; 803. a fifth ring; 804. and a third cylindrical hole.

Detailed Description

The utility model provides a simple and easy geotechnique triaxial test many sizes sample mould demolishs device, combines below the utility model discloses the drawing of planting is right the technical scheme in the embodiment of the utility model provides a further explanation.

As shown in fig. 1-7, a simple geotechnical triaxial test multi-size sample mold dismantling device, which comprises a supporting frame (1), the supporting frame comprises a base (4), a vertical support rod (3) is fixed on the base (4), a top plate (2) is connected to the top end of the vertical support rod (3), the top plate (2) is provided with a hole allowing a lifting rod (10) to move up and down, the upper end of the lifting rod (10) is connected with a handle (9), the lower end of the lifting rod is connected with a mold dismantling combined ring (5), the mold dismantling combined ring (5) can bear a sample mold (13) and slide up and down along a guide rod (12) so as to dismantle the mold (13), a sample is fixed by an upper end fixer (11), the fixer (11) is connected with the top plate (2) through a threaded rod and can be adjusted up and down.

Further, the combined circular ring (5) for mold removal is formed by overlapping an outer ring (6), a middle ring (7) and an inner ring (8), wherein the inner diameter of the inner ring (8) is 39.1mm, the inner diameter of the middle ring (7) is 61.8mm, the inner diameter of the outer ring (6) is 101mm, the sizes of the three circular rings are matched with each other, the combined circular ring can be overlapped for use, the number of the circular rings is increased or decreased according to the size of a sample, the three rings are overlapped for use at the same time when the diameter of the sample is 39.1mm, only the middle ring (7) and the outer ring (6) are overlapped for use when the diameter of the sample is 61.8mm, and only the outer ring (6). The circular rings are provided with protruding rings (601), (702) and (802) matched with moulds of different sizes to fix the moulds, so that the moulds cannot incline and fall off in the dismantling process.

Further, outer ring (6) include from inside to outside fixed ring one (602) and protruding ring two (601) in proper order, ring one (602) and protruding ring two (601) are coaxial, the centre is equipped with round hole (603), the internal diameter of protruding ring two (601) and the mould phase-match of diameter 101mm sample, the internal diameter of ring one (602) and diameter 101 mm's sample stationary blade and sample phase-match, the outside of outer ring (6) is provided with hole (604) and screw hole (605), guide bar (12) pass this hole (604) and make outer ring (6) can slide from top to bottom along guide bar (12), lifting rod (10) are connected with outer ring (6) through screw hole (605).

Further, sample fixer (11) are formed by connecting threaded rod and the disc of bottom area recess, and the hole of threaded rod upper end accessible handle (9) guarantees can not conflict with handle (9), and the threaded rod middle part is passed through the screw thread and is connected with the screw hole of roof (2), thereby can adjust and through compressing tightly sample stationary blade (14) fixed sample downwards from top to bottom according to the sample height, guarantees that the in-process sample can not rock at the mould dismantlement.

Furthermore, the first sample fixing piece (14) and the second sample fixing piece (15) are consistent with the diameter of the sample and work in cooperation with the sample fixer (11), so that the stress of the sample is uniform in the process of removing the die, the first sample fixing piece (14) and the second sample fixing piece (15) can be replaced by a permeable plate or a impermeable plate according to the type of the test, the first sample fixing piece and the second sample fixing piece can be taken out together after the die is removed, and the sample cannot be damaged in the transfer process.

Example (b):

first step, splicing the circular ring: and increasing or reducing the number of the rings for detaching the die according to the sizes of the sample and the die, so that the sizes of the rings and the die are matched.

Placing a sample fixing piece and a sample in a second step: and (3) placing the porous plate with the same size as the sample into a mold, removing the circular ring, then placing the sample and the mold, and placing the porous plate with the same size on the upper part of the sample.

Step three, sample fixing: and descending the fixing disc at the upper end of the sample until the fixing disc is in close contact with the water permeable plate arranged at the upper end of the sample, fixing the disc, and fixing the sample on the base through the water permeable plate.

Thirdly, lifting and dismantling the die: and (4) holding the grip, and lifting the mould upwards through the lifting rod and the mould removing ring to separate the mould from the sample until the mould is removed.

Step four, taking out a sample: and after the mould is disassembled, taking the porous plate and the sample out of the device, and putting the porous plate and the sample into test equipment.

The utility model provides a pair of simple and easy geotechnique triaxial test many sizes sample mould demolishs device guarantees through fixed disc in sample upper end and base that the sample can not rock at the mould demolishs the in-process. The lower part mould is demolishd the ring and is spliced by the ring of three different radius sizes, can increase or reduce ring quantity according to the sample of equidimension not to the mould that is applicable to not unidimensional sample is demolishd, and the ring has bellied part, guarantees that the mould can not incline or drop upwards demolishs the in-process. The supporting frame is made of carbon steel materials, the upper end fixing disc is made of aluminum alloy materials, the strength is high, the deformation is not prone to occurring, the overall structure and the stability are good, the operation is simple and convenient, the efficiency is high, and the device is worthy of popularization.

While there has been shown and described what are at present considered to be novel embodiments, it is not intended to be limited thereto and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the principles of the invention and, therefore, the invention is to be considered as limited to the scope thereof.

Claims

1. The utility model provides a simple and easy geotechnique triaxial test many sizes sample mould demolishs device, includes braced frame (1), its characterized in that, braced frame (1) includes base (4), be fixed with vertical support bar (3) on base (4), roof (2) are connected on vertical support bar (3) top, and roof (2) below is sample fixer (11), sample stationary blade (14), sample mould (13), sample stationary blade two (15), mould demolishs combination ring (5) in proper order, and the mould demolishs combination ring (5) and links to each other with lift bar (10) and accessible guide bar (12) drive sample mould (13) and slide from top to bottom.

2. The simple geotechnical triaxial test multi-size sample mold dismantling device according to claim 1, wherein the mold dismantling combined circular ring (5) is formed by overlapping an outer ring (6), a middle ring (7) and an inner ring (8), wherein the inner diameter of the inner ring (8) is 39.1mm, the inner diameter of the middle ring (7) is 61.8mm, the inner diameter of the outer ring (6) is 101mm, the number of the rings can be increased or decreased according to the size of a sample, three rings are overlapped and used at the same time when the diameter of the sample is 39.1mm, only the middle ring (7) and the outer ring (6) are overlapped and used when the diameter of the sample is 61.8mm, only the outer ring (6) is used when the diameter of the sample is 101 mm; the circular rings are provided with protruding rings (601), (702) and (802) matched with moulds of different sizes to fix the moulds, so that the moulds cannot incline and fall off in the dismantling process.

3. The simple geotechnical triaxial test multi-size sample mold dismantling device as claimed in claim 1, wherein the sample holder (11) is formed by connecting a threaded rod and a disc with a groove at the bottom, the upper end of the threaded rod can pass through a hole of the handle, the threaded rod is connected with a threaded hole of the top plate (2), can be adjusted up and down according to the sample height and can fix the sample by pressing a sample fixing piece (14) downwards, and the sample is guaranteed not to shake during dismantling of the sample mold (13).