CN210834397U - Sample preparation device for soil test - Google Patents
Sample preparation device for soil test Download PDFInfo
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- CN210834397U CN210834397U CN201921721205.3U CN201921721205U CN210834397U CN 210834397 U CN210834397 U CN 210834397U CN 201921721205 U CN201921721205 U CN 201921721205U CN 210834397 U CN210834397 U CN 210834397U
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- sample preparation
- sample
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- soil
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A sample preparation device for geotechnical tests comprises a supporting mechanism, a sample preparation cylinder and a sample preparation mechanism; the supporting mechanism is of a rectangular frame structure, the sample preparation barrel is vertically arranged at the bottom of the inner side, the sample preparation mechanism is arranged at the top of the rectangular frame structure, and one end of the sample preparation mechanism is located inside the supporting mechanism and is on the same straight line with the sample preparation barrel. This system appearance ware utilizes the mode of pressing the appearance post and pressurize simultaneously from top to bottom, adopts two-way compaction method once only to compact remolded soil to appointed height, and convenient operation has avoided the sample layering that the compaction method leads to, and the inhomogeneous problem of density has also solved one-way layering many times compaction method complex operation, the longer problem of consuming time. The prepared soil sample has good uniformity, small density difference and less influence on the test.
Description
Technical Field
The utility model belongs to the technical field of geotechnical test, in particular to system appearance device for geotechnical test.
Background
In general, when the conventional triaxial test of soil is carried out, the soil sample is necessarily processed and prepared according to the requirements of test regulations. When the remolded soil is subjected to a triaxial test, the remolded soil needs to be made into a remolded soil sample with a specific size, and a common method is a compaction method. The operation process is that the soil sample is prepared by using a standard compaction device to compact the soil sample in a sample-striking device in several layers, but the standard compaction method has a relatively obvious impact effect on the soil sample in the sample-striking process, so that the strength of the sample is influenced, and the prepared soil sample has obvious layering phenomenon and uneven density, so that the isotropy of the sample is difficult to ensure. Although the impact force to the sample can be reduced by adopting a one-way compaction method to prepare the sample, the force can be hardly transmitted to the bottom layer of the sample by one-time compaction, the obvious density difference is easily generated between the upper layer and the lower layer, the density difference of the top end and the bottom end of the sample can be reduced by layering compaction, the operation is complicated, and the sample preparation time is too long.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a system appearance device for geotechnical test to solve above-mentioned problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a sample preparation device for geotechnical tests comprises a supporting mechanism, a sample preparation cylinder and a sample preparation mechanism; the supporting mechanism is of a rectangular frame structure, the sample preparation barrel is vertically arranged at the bottom of the inner side, the sample preparation mechanism is arranged at the top of the rectangular frame structure, and one end of the sample preparation mechanism is located inside the supporting mechanism and is on the same straight line with the sample preparation barrel.
Further, the supporting mechanism comprises a top plate, a bottom plate and a fixed support upright post; the bottom plate level sets up, and the one end vertical fixation of two fixed bolster stands is on the bottom plate, other end and roof fixed connection.
Furthermore, the stand column of the fixed support is connected with the top plate through a bolt, a round hole is formed in the geometric center of the top plate, and the sample preparation mechanism extends into the supporting mechanism through the round hole.
Further, the sample preparation mechanism comprises a threaded pressurizing rod, an upper sample pressing column and a lower sample pressing column; one end of the threaded pressurizing rod extends into the supporting mechanism and is fixedly connected with the upper sample pressing column; the other end of the threaded pressurizing rod is fixedly connected with a handle; the lower sample pressing column is arranged in the sample preparation cylinder.
Furthermore, the other end of the screw thread pressurizing rod is connected with the output end of the motor.
Compared with the prior art, the utility model discloses there is following technological effect:
the utility model discloses a system appearance ware function is various, both can be used to prepare conventional triaxial sample, also can be used to prepare the cylindrical sample in unconfined compressive strength test and the direct shear test. When samples with different specifications are manufactured, soil samples required by tests can be manufactured only by replacing sample pressing columns and sample manufacturing cylinders with different specifications;
this system appearance ware utilizes the mode of pressing the appearance post and pressurize simultaneously from top to bottom, adopts two-way compaction method once only to compact remolded soil to appointed height, and convenient operation has avoided the sample layering that the compaction method leads to, and the inhomogeneous problem of density has also solved one-way layering many times compaction method complex operation, the longer problem of consuming time. The prepared soil sample has good uniformity, small density difference and less influence on the test.
Drawings
FIG. 1: a front view of the sample preparation device;
FIG. 2: a top plate top view;
reference numbers in the figures: 1-replaceable top plate, 2-fixed support upright post, 3-bottom plate, 4-thread pressurizing rod, 5-upper sample pressing column, 6-sample preparation cylinder and 7-lower sample pressing column.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 and 2, a sample preparation device for geotechnical test includes a supporting mechanism, a sample preparation cylinder 6 and a sample preparation mechanism; the supporting mechanism is of a rectangular frame structure, the sample preparation cylinder 6 is vertically arranged at the bottom of the inner side, the sample preparation mechanism is arranged at the top of the rectangular frame structure, and one end of the sample preparation mechanism is located inside the supporting mechanism and is on the same straight line with the sample preparation cylinder 6.
The supporting mechanism comprises a top plate 1, a bottom plate 3 and a fixed support upright post 2; the bottom plate 3 level sets up, and the one end vertical fixation of two fixed bolster stands 2 is on bottom plate 3, the other end and roof 1 fixed connection.
The fixed support upright post 2 is connected with the top plate 1 through a bolt, a circular hole is formed in the geometric center of the top plate 1, and the sample preparation mechanism extends into the supporting mechanism through the circular hole.
The sample preparation mechanism comprises a threaded pressurizing rod 4, an upper sample pressing column 5 and a lower sample pressing column 7; one end of the threaded pressurizing rod 4 extends into the supporting mechanism and is fixedly connected with the upper sample pressing column 5; the other end of the threaded pressurizing rod 4 is fixedly connected with a handle; the lower sample pressing column 7 is arranged in the sample preparation cylinder 6.
The other end of the screw thread pressurizing rod 4 is connected with the output end of the motor.
The specific sample preparation method comprises the following steps:
1. and calculating the mass of the sample according to the density and the volume of the required sample, weighing the remolded soil with the corresponding mass, and placing the remolded soil in a disc for later use.
2. Adding the remolded soil into the sample preparation cylinder for 5 times, ensuring that the mass of the soil body added every time is the same or similar, slightly compacting by using a compaction hammer after the soil body is added every time, and then scraping and shaving the surface.
3. And (3) placing the lower sample pressing column on the upper part of the sample preparation device, rotating the sample preparation device by 180 degrees, and placing the sample preparation device at the central position of the base of the sample preparation device.
4. The threaded press bar was rotated to compact the sample down to the specified height and allowed to rest for 30 minutes.
5. And (4) rotating the threaded pressure rod upwards to take the sample preparation device out of the sample preparation device.
6. And replacing the corresponding top plate according to the size of the sample, and ejecting the sample upwards by using the jack.
The base is connected with removable formula roof to the fixed bolster stand, and the screw thread pressure pole passes through the screw thread and links to each other with the roof, and upper portion pressure appearance post passes through the screw fixation in screw thread pressure pole bottom, and a system appearance section of thick bamboo is independent accessory with lower part pressure appearance post, does not link to each other with other parts. The top plate is a circular ring type iron plate, and the top plate pattern can be changed according to the sample preparation type. The hydraulic jack is used to raise the height by 19 cm.
Claims (5)
1. A sample preparation device for soil test is characterized by comprising a supporting mechanism, a sample preparation cylinder (6) and a sample preparation mechanism; the supporting mechanism is of a rectangular frame structure, the sample preparation cylinder (6) is vertically arranged at the bottom of the inner side, the sample preparation mechanism is arranged at the top of the rectangular frame structure, one end of the sample preparation mechanism is located inside the supporting mechanism, and the sample preparation mechanism and the sample preparation cylinder (6) are located on the same straight line.
2. A sample preparation device for soil tests according to claim 1, characterized in that the support means comprises a top plate (1), a bottom plate (3) and a fixed support upright (2); the bottom plate (3) is horizontally arranged, one ends of the two fixing support upright posts (2) are vertically fixed on the bottom plate (3), and the other ends of the two fixing support upright posts are fixedly connected with the top plate (1).
3. The sample preparation device for the soil test according to claim 2, wherein the fixed support upright column (2) is connected with the top plate (1) through a bolt, a circular hole is formed in the geometric center of the top plate (1), and the sample preparation mechanism extends into the supporting mechanism through the circular hole.
4. The sample preparation device for the soil test according to claim 1, wherein the sample preparation mechanism comprises a threaded pressure rod (4), an upper sample pressing column (5) and a lower sample pressing column (7); one end of the threaded pressurizing rod (4) extends into the supporting mechanism and is fixedly connected with the upper sample pressing column (5); the other end of the threaded pressurizing rod (4) is fixedly connected with a handle; the lower sample pressing column (7) is arranged in the sample preparation cylinder (6).
5. A sample preparation device for soil tests according to claim 4, characterized in that the other end of the threaded pressure rod (4) is connected with the output end of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921721205.3U CN210834397U (en) | 2019-10-14 | 2019-10-14 | Sample preparation device for soil test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921721205.3U CN210834397U (en) | 2019-10-14 | 2019-10-14 | Sample preparation device for soil test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210834397U true CN210834397U (en) | 2020-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921721205.3U Expired - Fee Related CN210834397U (en) | 2019-10-14 | 2019-10-14 | Sample preparation device for soil test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210834397U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638111A (en) * | 2020-07-20 | 2020-09-08 | 安徽理工大学 | Experimental method for compacting filler test piece through continuous compression |
-
2019
- 2019-10-14 CN CN201921721205.3U patent/CN210834397U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111638111A (en) * | 2020-07-20 | 2020-09-08 | 安徽理工大学 | Experimental method for compacting filler test piece through continuous compression |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200623 Termination date: 20211014 |