A grid-type automatic sampling device for geotechnical tests

Abstract

A grid-type automatic sampling device for geotechnical tests includes a steel wire soil cutting grid, an electric push rod, a combined bracket, and a control cabinet; the steel wire soil cutting grid is composed of a grid and several steel wires, the steel wire soil cutting grid is arranged above the top of the control cabinet and horizontally installed on the piston ends of several vertically arranged electric push rods, the fixed end of the electric push rod is installed on the control cabinet, the combined bracket is installed on the top of the control cabinet and corresponds to the steel wire soil cutting grid up and down, the combined bracket is provided with gaps corresponding to the steel wires of the steel wire soil cutting grid, and the control cabinet is provided with a control switch and a reset switch for controlling the electric push rod. Compared with the traditional manual sampling method, the steel wire soil cutting grid, the electric push rod, and the combined bracket are used for automatic cutting and sampling, which saves manpower, improves work efficiency, and enhances the automation level of geotechnical technology, and can meet the needs of sample segmentation of different sizes, and can also be standardized to ensure the quality of the samples.

Description

Technical Field

[0001] The invention relates to the field of geotechnical engineering investigation indoor geotechnical test, and in particular to a grid-type geotechnical test automatic sampling device. Background Art

[0002] When conducting various tests, the geotechnical laboratory needs to divide the original soil samples obtained from field drilling into various specimens of the required size to obtain the physical and mechanical properties of the strata required for engineering design and construction. The size of the original soil samples drilled from the field is generally 108 mm in diameter and 200 to 300 mm in length. Indoor geotechnical test personnel divide the original soil samples drilled from the field into specimens of different sizes, such as 3 to 10 mm in length, according to the requirements of the project, to further make specimens of 2 cm in length for conventional tests, or specimens of 4 cm or 8 cm in length for special tests. The key process of making specimens is to use a wire saw or a soil cutter to manually divide the original soil samples in sequence.

[0003] The conventional manual sampling method has the following disadvantages: 1. The test operator needs to hold the cutting tool in one hand and hold the soil sample in the other hand, and cut the samples one by one, resulting in low test efficiency; 2. When encountering hard plastic original soil samples, cutting requires great strength, and the process is time-consuming and laborious; 3. When manually dividing the original soil samples, multiple cuttings are required, and the cutting speed, force and smoothness are difficult to control, and the quality of the cut samples is difficult to guarantee; 4. The sizes of the manually divided samples are different, and the flatness of the cut surface is also difficult to guarantee, and it cannot be standardized, which affects the subsequent production of test samples. Summary of the invention

[0004] In view of the above problems, the present invention provides a grid-type automatic sampling device for geotechnical tests.

[0005] The object of the present invention can be achieved by the following technical scheme: a grid-type automatic sampling device for geotechnical tests, comprising a steel wire soil cutting grid, an electric push rod, a combined bracket, and a control cabinet; the steel wire soil cutting grid is composed of a grid and several steel wires, the steel wire soil cutting grid is arranged above the top of the control cabinet and horizontally installed on the piston ends of several vertically arranged electric push rods, the fixed ends of the electric push rods are installed on the control cabinet, the combined bracket is installed on the top of the control cabinet and corresponds to the steel wire soil cutting grid up and down, the combined bracket is provided with gaps corresponding to the steel wires of the steel wire soil cutting grid, and the control cabinet is provided with a control switch and a reset switch for controlling the electric push rod.

[0006] Furthermore, the steel wire soil cutting grid has a rectangular frame shape, and several steel wires are parallel and arranged along the length direction of the grid.

[0007] Furthermore, the steel wire soil cutting grid includes a standard steel wire soil cutting grid and a special steel wire soil cutting grid, the combined bracket includes a standard combined bracket and a special combined bracket, and the control cabinet is provided with a first control switch, a first reset switch, a second control switch, and a second reset switch. The first control switch and the first reset switch control the electric push rod installed with the standard steel wire soil cutting grid, and the second control switch and the second reset switch control the electric push rod installed with the special steel wire soil cutting grid.

[0008] Furthermore, the standard steel wire soil cutting grid is installed on the piston ends of 4 electric push rods, and the special steel wire soil cutting grid is installed on the piston ends of another 4 electric push rods.

[0009] Furthermore, the standard steel wire soil cutting grid includes a first grid and 9 first steel wires. The first grid is 50 cm long. The 9 first steel wires are arranged along the length direction of the first grid at intervals of 3 cm. The two first steel wires at both ends are respectively 15 cm and 5 cm away from the two ends of the first grid.

[0010] Furthermore, the special steel wire soil cutting grid includes a second grid and 5 second steel wires. The second grid is 45 cm long. The 5 second steel wires are arranged in sequence along the length direction of the second grid at intervals of 10 cm, 6 cm, 6 cm, and 10 cm. The two second steel wires at both ends are respectively 5 cm and 5 cm away from the two ends of the second grid.

[0011] Furthermore, the standard combination bracket and the special combination bracket both include a plurality of U-shaped brackets and two fixing blocks, the U-shaped opening of each U-shaped bracket is arranged upward and the plurality of U-shaped brackets are arranged along the length direction of the wire cutting grid, each fixing block is provided with a protrusion matching the U-shaped opening of the U-shaped bracket, and the two fixing blocks are respectively fixed to the ends of the U-shaped openings of the two U-shaped brackets located at both ends.

[0012] Furthermore, the number of U-shaped brackets of the standard combination bracket is 10, and the thicknesses of the 10 U-shaped brackets along the length direction of the standard wire cutting grid are 14cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, and 4cm respectively, and the interval between two adjacent U-shaped brackets is 1cm.

[0013] Furthermore, the number of U-shaped brackets of the special combination bracket is 6, and the thicknesses of the 6 U-shaped brackets along the length direction of the special steel wire cutting grid are 4cm, 9cm, 5cm, 5cm, 9cm, and 4cm respectively, and the interval between two adjacent U-shaped brackets is 1cm.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the use of a wire soil cutting grid, an electric push rod, and a combined bracket for automatic cutting and sampling saves manpower, improves work efficiency, and enhances the level of automation of geotechnical technology compared with the traditional manual sampling method. It can also meet the needs of splitting samples of different sizes, while achieving standardization and ensuring sample quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the present invention.

[0016] Figure 2 It is a front perspective view of the present invention.

[0017] Figure 3 It is a side perspective view of the present invention.

[0018] Figure 4 It is a top view of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the standard steel wire soil cutting grid in the present invention.

[0020] Figure 6 It is a structural schematic diagram of the special steel wire soil cutting grid in the present invention.

[0021] Figure 7 It is a schematic diagram of the structure of the U-shaped bracket in the present invention.

[0022] Figure 8 It is a schematic diagram of the installation of the U-shaped bracket and the fixing block in the present invention.

[0023] Fig. 9 It is a schematic diagram of the structure of the standard combined bracket in the present invention.

[0024] Fig.10 It is a schematic diagram of the structure of the special combined bracket in the present invention.

[0025] The parts in the figure are numbered as follows:

[0026] 1Standard steel wire cutting grid

[0027] 2 Special steel wire cutting grid

[0028] 3 Electric linear actuator

[0029] 4Standard combination bracket

[0030] 5Special combination bracket

[0031] 6. Control cabinet

[0032] 7First control switch

[0033] 8First reset switch

[0034] 9 Second control switch

[0035] 10 Second reset switch

[0036] 11The first grid

[0037] 12 First Wire

[0038] 13 Second Grid

[0039] 14 Second Wire

[0040] 15 U-shaped bracket

[0041] 16 fixed block

[0042] 17 Original soil samples. DETAILED DESCRIPTION

[0043] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the present invention.

[0044] See also Figures 1 to 4 A grid-type automatic sampling device for geotechnical tests, comprising a steel wire soil cutting grid, an electric push rod 3, a combined bracket, and a control cabinet 6. The steel wire soil cutting grid is arranged above the top of the control cabinet 6 and horizontally mounted on the piston ends of several vertically arranged electric push rods 3, the fixed ends of the electric push rods 3 are mounted on the control cabinet 6, the combined bracket is mounted on the top of the control cabinet 6 and corresponds to the steel wire soil cutting grid up and down, and the control cabinet 6 is provided with a control switch and a reset switch for controlling the electric push rods 3. The steel wire soil cutting grid is composed of a grid and several steel wires, the grid is in a rectangular frame shape, the several steel wires are parallel and distributed along the length direction of the grid according to the set spacing, and the combined bracket is provided with gaps corresponding to the steel wires of the steel wire soil cutting grid. During operation, the control switch on the control cabinet 6 is started, and the steel wire soil cutting grid frame moves downward along with the piston end of the electric push rod 3, and the steel wire of the steel wire soil cutting grid frame cuts through the soil sample and cuts down to the gap reserved on the combined bracket, thereby completing the soil sample cutting.

[0045] In this embodiment, the steel wire soil cutting grid includes a standard steel wire soil cutting grid 1 and a special steel wire soil cutting grid 2, and the standard steel wire soil cutting grid 1 and the special steel wire soil cutting grid are respectively installed on the piston ends of four electric push rods 3. The combined bracket includes a standard combined bracket 4 and a special combined bracket 5. The control cabinet 6 is provided with a first control switch 7, a first reset switch 8, a second control switch 9, and a second reset switch 10. The first control switch 7 and the first reset switch 8 control the electric push rod 3 installed with the standard steel wire soil cutting grid 1, and the second control switch 9 and the second reset switch 10 control the electric push rod 3 installed with the special steel wire soil cutting grid 2. More specifically, the control cabinet 6 is provided with an operation panel inclined at an angle of 30°, and the first control switch 7, the first reset switch 8, the second control switch 9, and the second reset switch 10 are all arranged on the operation panel.

[0046] See also Figure 5 The standard steel wire soil cutting grid 1 is used to cut standard samples of a size that meets the requirements of conventional tests. The standard steel wire soil cutting grid 1 includes a first grid 11 and 9 first steel wires 12. The first grid 11 is 50 cm long and 28 cm wide. The 9 first steel wires 12 are arranged along the length direction of the first grid 11 at intervals of 3 cm. The two first steel wires 12 at both ends are 15 cm and 5 cm away from the two ends of the first grid 11, respectively. The 15 cm steel wire cutting section can cut the original soil sample 17 used for special tests, so that the soil sample can continue to be moved under the special steel wire soil cutting grid 2 to cut out the sample that meets the requirements of special tests.

[0047] See also Figure 6 The special steel wire soil cutting grid 2 is used to cut special specimens of a size that meets the requirements of special tests. The special steel wire soil cutting grid 2 includes a second grid 13 and five second steel wires 14. The second grid 13 is 45 cm long and 28 cm wide. The five second steel wires 14 are arranged in sequence along the length direction of the second grid 13 at intervals of 10 cm, 6 cm, 6 cm, and 10 cm. The two second steel wires 14 at both ends are respectively 5 cm and 5 cm away from the two ends of the second grid 13.

[0048] The standard combination bracket 4 is used to cut different numbers of standard samples and leave original soil samples of special sizes required for special tests. The special combination bracket 5 is used to cut original soil samples of special sizes required for special tests. Both the standard combination bracket 4 and the special combination bracket 5 include a plurality of U-shaped brackets 15 and two fixing blocks 16. The plurality of U-shaped brackets 15 are arranged along the length direction of the steel wire cutting grid. The two fixing blocks 16 are respectively installed at the ends of the U-shaped openings of the two U-shaped brackets 15 at both ends. Figure 7 The U-shaped opening of each U-shaped bracket 15 is arranged upward to support the sample. Figure 8Each fixing block 16 is provided with a protrusion matched with the U-shaped opening of the U-shaped bracket 15, and the fixing block 16 plays a role in fixing and protecting the end of the sample.

[0049] See also Fig. 9 The standard combination bracket 4 includes 10 U-shaped brackets 15. The thicknesses of the 10 U-shaped brackets 15 along the length direction of the wire cutting grid are 14 cm, 2 cm, 2 cm, 2 cm, 2 cm, 2 cm, 2 cm, 2 cm, 4 cm respectively. The interval between two adjacent U-shaped brackets 15 is 1 cm, and the thickness of each fixed block 16 is 2 cm.

[0050] See also Fig.10 The special combination bracket 5 includes 6 U-shaped brackets 15, and the thicknesses of the 6 U-shaped brackets 15 along the length direction of the wire cutting grid are 4cm, 9cm, 5cm, 5cm, 9cm, and 4cm respectively. The interval between two adjacent U-shaped brackets 15 is 1cm, and the thickness of each fixed block 16 is 2cm. Samples with a length of 6cm or 10cm can be cut.

[0051] When the device is used for automatic sampling, firstly, the power is turned on, the piston end of the electric push rod 3 is extended to the longest, so that the standard steel wire soil cutting grid frame 1 and the special steel wire soil cutting grid frame 2 are located at the starting position. Then, the appropriate steel wire soil cutting grid frame is selected according to the size of the soil sample to be cut.

[0052] If the sample with the standard size of 2 cm is cut, the original soil sample with a diameter of 108 mm and a length of 200-300 mm is placed in the U-shaped opening of the U-shaped bracket 15 of the standard combined bracket 4 according to the number of samples to be cut, and placed in the corresponding position. After that, the first control switch 7 is started, and the corresponding electric push rod 3 pulls the standard steel wire soil cutting grid 1 to cut steadily, and the first steel wire 12 of the standard steel wire soil cutting grid 1 cuts through the soil sample and passes through the gap of the standard combined bracket 4 and then stops. At this time, the soil sample has been completely divided, and the divided sample can be taken out and the residual slag can be cleaned.

[0053] If it is necessary to cut a sample of a special size, put the original soil sample with a diameter of 108mm and a length of 200-300mm into the U-shaped opening of the U-shaped bracket 15 of the standard combination bracket 4, and one end of the original soil sample is against the fixed block 16 on the 14cm thick U-shaped bracket 15 to ensure that it can be cut by the 15cm steel wire cutting section of the standard steel wire soil cutting grid 1. After that, start the first control switch 7, and the corresponding electric push rod 3 pulls the standard steel wire soil cutting grid 1 to cut steadily. When the soil sample is completely divided, take out the original soil sample on the 14cm thick U-shaped bracket 15, the maximum length of which is 150mm, and place the soil sample in the U-shaped opening of the U-shaped bracket 15 of the special combination bracket 5. Start the second control switch 9, and the corresponding electric push rod 3 pulls the special steel wire soil cutting grid 2 to cut steadily, completing the cutting of the sample of special size. After the sample separation of special size is completed, press the first reset switch 8 and the second reset switch 10 to reset the corresponding electric push rod 3. If you need to cut the next original soil sample, repeat the above steps.

[0054] If there is any abnormality during the sample sorting process, the first control switch 7 and the second control switch 9 can be pressed respectively to stop the movement of the corresponding electric push rod 3, or the first reset switch 8 and the second reset switch 10 can be pressed to restore the corresponding electric push rod 3 to the initial position, so as to eliminate the fault.

[0055] It should be noted that the fully described invention may also have a variety of variations and modifications, and is not limited to the specific embodiments described above. The above embodiments are merely illustrative of the invention, not limiting thereof. In short, the scope of protection of the invention should include those variations or substitutions and modifications that are obvious to a person of ordinary skill in the art.

Claims

1. A grid-type automatic sampling device for geotechnical tests, characterized in that: It includes a steel wire soil cutting grid, an electric push rod, a combined bracket, and a control cabinet; the steel wire soil cutting grid is composed of a grid and several steel wires, the steel wire soil cutting grid is arranged above the top of the control cabinet and horizontally installed on the piston ends of several vertically arranged electric push rods, the fixed ends of the electric push rods are installed on the control cabinet, the combined bracket is installed on the top of the control cabinet and corresponds to the steel wire soil cutting grid up and down, the combined bracket is provided with gaps corresponding to the steel wires of the steel wire soil cutting grid, the control cabinet is provided with a control switch and a reset switch for controlling the electric push rod, the steel wire soil cutting grid includes a standard steel wire soil cutting grid and a special steel wire soil cutting grid, the combined bracket includes a standard combined bracket and a special combined bracket, the control cabinet is provided with a first control switch, a first reset switch, a second control switch, and a second reset switch, the first control switch and The first reset switch controls the electric push rod installed with a standard steel wire soil cutting grid, the second control switch and the second reset switch control the electric push rod installed with a special steel wire soil cutting grid, the standard combination bracket and the special combination bracket both include multiple U-shaped brackets and two fixed blocks, the U-shaped opening of each U-shaped bracket is arranged upward and the multiple U-shaped brackets are arranged along the length direction of the steel wire soil cutting grid, each fixed block is provided with a protrusion that matches the U-shaped opening of the U-shaped bracket, and the two fixed blocks are respectively fixed to the ends of the U-shaped openings of the two U-shaped brackets located at both ends, the standard steel wire soil cutting grid includes a first grid and 9 first steel wires, the first grid is 50 cm long, the 9 first steel wires are arranged along the length direction of the first grid at a spacing of 3 cm, and the two first steel wires located at both ends are respectively 15 cm and 5 cm away from the two ends of the first grid.

2. The grid-type automatic sampling device for geotechnical tests according to claim 1 is characterized in that: The steel wire soil cutting grid is in the shape of a rectangular frame, and a plurality of steel wires are parallel and arranged along the length direction of the grid.

3. The grid-type automatic sampling device for geotechnical tests according to claim 1 is characterized in that: The standard steel wire soil cutting grid frame is installed on the piston ends of 4 electric push rods, and the special steel wire soil cutting grid is installed on the piston ends of the other 4 electric push rods.

4. The grid-type automatic sampling device for geotechnical tests according to claim 1 is characterized in that: The special steel wire soil cutting grid includes a second grid and 5 second steel wires. The second grid is 45 cm long. The 5 second steel wires are arranged in sequence along the length direction of the second grid at intervals of 10 cm, 6 cm, 6 cm, and 10 cm. The two second steel wires at both ends are respectively 5 cm and 5 cm away from the two ends of the second grid.

5. The grid-type automatic sampling device for geotechnical tests according to claim 1 is characterized in that: The number of U-shaped brackets of the standard combined bracket is 10, and the thickness of the 10 U-shaped brackets along the length direction of the standard wire cutting grid is 14cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, 4cm, and the interval between two adjacent U-shaped brackets is 1cm.

6. The grid-type automatic sampling device for geotechnical tests according to claim 1 is characterized in that: The number of U-shaped brackets of the special combined bracket is 6, and the thickness of the 6 U-shaped brackets along the length direction of the special steel wire cutting soil grid is 4cm, 9cm, 5cm, 5cm, 9cm, and 4cm respectively, and the interval between two adjacent U-shaped brackets is 1cm.

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