CN203337473U - Soil pressure sensor mounting and loading test device - Google Patents
Soil pressure sensor mounting and loading test device Download PDFInfo
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- CN203337473U CN203337473U CN2013203716724U CN201320371672U CN203337473U CN 203337473 U CN203337473 U CN 203337473U CN 2013203716724 U CN2013203716724 U CN 2013203716724U CN 201320371672 U CN201320371672 U CN 201320371672U CN 203337473 U CN203337473 U CN 203337473U
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- pressure sensor
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- soil pressure
- test device
- loading test
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Abstract
The utility model discloses a soil pressure sensor mounting and loading test device. A punching mechanism and a burying mechanism are not required to dig a tunnel for burying a sensor in advance but are only required to drill a hole for placing a soil pressure sensor along a certain angle, so that the influence of the dug tunnel on the boundary effect at a measuring point for burying the soil pressure sensor is avoided, the disturbance and the damage to the in-situ soil structure state are reduced to the greatest extent, and meanwhile, the labor intensity for burying the soil pressure sensor is reduced; a loading test mechanism is used for reflecting the transfer state of stress in soil through loaded load and loading stress measured by the soil pressure sensor buried in the soil by using hydraulic drive control with stable loading speed and accurate control, so that the compaction and stress process of farmland soil can be more accurately reflected. The device has the advantages of simple structure, low cost and accurate measurement, is convenient to use, can be widely applied to testing a compaction state of the farmland soil and is suitable for popularization and application.
Description
Technical field
The utility model relates to the agricultural land soil monitoring technical field, is specially a kind of soil pressure sensor of monitoring the agricultural land soil compacting process loading test device is installed.
Background technology
The farm work facility have reduced fertility to the compacting of agricultural land soil, and monitoring various farm work facility is effectively to avoid the element task of soil overcompaction to the soil packing process.Use soil pressure sensor monitoring soil compression process is an efficient means in agricultural land soil compaction test technical method, but current this observation process complex operation, and there is no a set of also method of operating of standard of improving.Current way at first need to be in excavation tunnel, place to be measured, and then the different depth position at the sidewall in tunnel gets out horizontal hole, finally soil pressure sensor is placed in horizontal hole.It is loaded down with trivial details that this sensor is buried process operation underground, wastes time and energy.In the process of soil pressure sensor testing soil compacting situation, the process need of burying soil pressure sensor underground farthest reduces disturbance and the destruction to the original position soil configuration state, reduce the labour intensity of burying sensor underground, the soil pressure sensor after burying underground should reduce the impact of the boundary effect in conventional excavation tunnel on test result simultaneously; Loading test process need to provide loading velocity and the loading stress of accurate control, reflect the transmission situation of stress in the soil body by obtain to load load and be embedded in the loading stress that the soil pressure sensor in the soil body records simultaneously, with the compacting situation of this clear and definite agricultural land soil.There is no at present special-purpose loading test device the sensor of burying underground is loaded to test, so the utility model is buried and loaded two operation links of test underground for the soil pressure sensor of agricultural land soil compacting monitoring corresponding device is provided.
Summary of the invention
The purpose of this utility model is to lack suitable equipment, waste time and energy for current soil pressure sensor test agricultural land soil compacting process, provides a kind of New Soil Pressure Cells for the field soil compaction test that loading test device is installed.
The purpose of this utility model solves by the following technical programs:
A kind of soil pressure sensor is installed loading test device, comprise perforating mechanism, bury mechanism underground and load mechanism for testing, it is characterized in that: perforating mechanism comprise one can be mobile in orbit support, the pilot sleeve of adjustable-angle is housed on support, and the section within it of being equipped with in pilot sleeve slides up and down and is with graduated soil sample barrel; Bury clamping cylinder that mechanism comprises a clamping soil pressure sensor underground, be placed in clamping cylinder the push rod that withstands soil pressure sensor and for the push rod of landfill; Load mechanism for testing and comprise the stand be installed on guide rail, stand is provided with the hydraulic cylinder be connected with hydraulic feed system by oil pipe, the piston rod top that the hydraulic cylinder vertically arranged is provided with displacement transducer and hydraulic cylinder is provided with the pressing plate that is positioned at the soil pressure sensor top, be provided with the power sensor between the piston rod top of pressing plate and hydraulic cylinder, soil pressure sensor, displacement transducer and power sensor are connected with information handling system with information acquisition system successively by signal wire respectively.
Described support is provided with shaft collar and shaft collar is provided with rotating angle scale, is welded with pilot sleeve on angle scale.
Described soil sample barrel comprises circular soil sample barrel and square soil sample barrel.
Described perforating mechanism also comprises a clear earthenware matched with soil sample barrel.
Described track adopts holdfast to fix.
Described information acquisition system and information handling system are placed on objective table.
The utility model has the following advantages compared to existing technology:
When the utility model is buried soil pressure sensor underground without excavating in advance for burying the tunnel of sensor underground, only need get out the hole of placing soil pressure sensor downwards along certain angle, avoid the tunnel of excavation on burying the boundary effect impact of putting soil pressure sensor measuring point place; The charger that uses hydraulic-driven to control to the loading of soil pressure sensor measuring point, not only loading velocity is stable, precise control, and the loading load of sensor and from the stress reading that is embedded in the power sensor in the soil body of simultaneously obtaining to rely on oneself, thereby can reflect more exactly compacting and the stress path of agricultural land soil.
Perforating mechanism of the present utility model, bury mechanism underground and load that mechanism for testing is simple in structure, cost is low and easy to use, measure accurately, can be widely used in the test of agricultural land soil compacting situation, suitable promoting the use of.
The accompanying drawing explanation
The structural representation that accompanying drawing 1 is the utility model perforating mechanism;
The pilot sleeve that accompanying drawing 2 is the utility model perforating mechanism and angle scale annexation schematic diagram;
Accompanying drawing 3 is buried clamping cylinder, the push rod structure schematic diagram of mechanism underground for the utility model;
Accompanying drawing 4 is buried the pusher structure schematic diagram of mechanism underground for the utility model;
Accompanying drawing 5 is the one-piece construction schematic diagram of the utility model loading mechanism for testing;
Accompanying drawing 6 for use this device in the test process in a typical farmland power sensor at the output voltage curve of the sagging process of pressing plate;
Accompanying drawing 7 for use this device in the test process in a typical farmland soil pressure sensor at the output voltage curve of the sagging process of pressing plate.
Wherein: 1-soil sample barrel; 2-pilot sleeve; 3-support; 4-clear earthenware; 5-guide rail; 6-angle scale; 7-shaft collar; 8-soil pressure sensor; 9-clamping cylinder; 10-push rod; 11-signal wire; 12-push rod; 13-stand; 14-hydraulic cylinder; 15-displacement transducer; 16-power sensor; 17-pressing plate; 18-holdfast; 19-oil pipe; 20-hydraulic feed system; 21-information acquisition system; 22-information handling system; 23-objective table.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
As Figure 1-5: a kind of soil pressure sensor is installed loading test device, comprise perforating mechanism, bury mechanism underground and load mechanism for testing, wherein perforating mechanism comprises a support 3 that can move on the track fixing by holdfast 18 5, the pilot sleeve 2 of adjustable-angle is housed on support 3, and pilot sleeve 2 is welded on angle scale 6; Angle scale 6 rotates to change the angle between pilot sleeve 2 and ground; Rotating angle scale 6 is arranged on the shaft collar 7 on support 3; The section within it of being equipped with in pilot sleeve 2 slides up and down and is with graduated soil sample barrel 1, soil sample barrel 1 comprises circular soil sample barrel and square soil sample barrel, during use, first with circular soil sample barrel, fetch earth, the square soil sample barrel of rear use fetches earth, and with the hole wall that guarantees soil pressure sensor 8 and mounting hole, can fit tightly; Perforating mechanism also comprises a clear earthenware 4 matched with soil sample barrel 1 in addition.Bury clamping cylinder 9 that mechanism comprises a clamping soil pressure sensor 8 underground, be placed in the push rod 10 that withstands soil pressure sensor 8 in clamping cylinder 9 and for the push rod 12 of landfill.Load mechanism for testing and comprise the stand 13 be installed on guide rail 5; Stand 13 is provided with the hydraulic cylinder 14 be connected with hydraulic feed system 20 by oil pipe 19; The piston rod top of the hydraulic cylinder 14 vertically arranged is provided with the pressing plate 17 that is positioned at soil pressure sensor 8 tops and hydraulic cylinder 14 and is provided with the displacement of sinking to pressing plate 17 and carries out the displacement transducer 15 of real time record; Be provided with the power sensor 16 that loading force is carried out to real time record between the piston rod top of pressing plate 17 and hydraulic cylinder 14; Soil pressure sensor 8, displacement transducer 15 and power sensor 16 are connected with information handling system 22 with information acquisition system 21 successively by signal wire 11 respectively; Information acquisition system 21 and information handling system 22 are placed on objective table 23.
The method of operating step that this soil pressure sensor is installed loading test device is as follows:
A, at first choose a 10 * 1m in field
2zone is as test zone, then adopt holdfast 18 that its anchor is fastened on the earth's surface at test zone place on guide rail 5, then the support of perforating mechanism 3 is arranged on guide rail 5, adjusts angle scale 6 and make the angle of pilot sleeve 2 meet fixed angles scale 6 after pre-provisioning request;
B, soil sample barrel 1 is passed and make from pilot sleeve 2 front end of soil sample barrel 1 touch earth's surface, the initial scale of this tense marker soil sample barrel 1; Then according to the tilt angle calculation of the depth of burying of soil pressure sensor 8 and pilot sleeve 2, draw after soil sample barrel 1 probes into the displacement on earth's surface and start boring; Pull out earth's surface and use clear earthenware 4 removing plugs to be embedded in the soil in soil sample barrel 1 groove after while fetching earth, soil sample barrel 1 gently being turned to an angle; Repeat boring and the process that fetches earth, until probe into the soil sample barrel 1 of soil layer, arrive precalculated position, complete the hole drilling process of burying underground of soil pressure sensor 8, now remove support 3;
C, by the signal wire of soil pressure sensor 8 11 from the end of clamping cylinder 9 feeding clamping cylinder 9 and pass clamping cylinder 9, tension signal wire 11 makes soil pressure sensor 8 be embedded in the end recesses place of clamping cylinder 9; 10 ends by clamping cylinder 9 of push rod are reverse to be run through clamping cylinder 9 and touches soil pressure sensor 8; Rotate sensing face that clamping cylinder 9 makes soil pressure sensor 8 upward; Gently clamping cylinder 9 is filled in the mounting hole of soil pressure sensor 8; Promote push rod 10 when soil pressure sensor 8 arrives the mounting hole bottom, by push rod 10, soil pressure sensor 8 is leaned to the bottom at mounting hole; Now clamping cylinder 9 is extracted out from mounting hole and soil pressure sensor 8, signal wire 11 and push rod 10 continue to stay in mounting hole; Maintain the state of push rod 10, in mounting hole, insert a certain amount of fine sand or hack and push with push rod 12; The space that the fine sand that order is sent into or hack fill up soil pressure sensor 8 rear portions, extract gently push rod 10 state of stick signal line 11 in mounting hole out, then extract push rod 12 out and continue to insert enough fine sands or hack and use successively push rod 12 to push in mounting hole, the process of burying underground of mounting hole having been tamped to soil pressure sensor 8;
D, buried soil pressure sensor 8 after, stand 13 is moved to the top of soil pressure sensor 8 along track 5; The signal wire 11 that will be connected with soil pressure sensor 8, displacement transducer 15 and power sensor 16 respectively is connected with information handling system 22 with information acquisition system 21; Start hydraulic feed system 20, measure the sensing stress of rate of sinking, displacement and the soil pressure sensor 8 of load application lower platen 17;
The data analysis that e, 22 pairs of information acquisition systems of information handling system 21 obtain is processed the test zone soil packing situation that draws.
Test case:
Soil compression test by this application of installation in a typical farmland, south, start hydraulic feed system 20 after having buried soil pressure sensor 8 underground according to the above-mentioned method provided, record the output voltage of power sensor 16 and the output voltage curve of soil pressure sensor 8 at pressing plate 17 in sagging process, two curves show respectively in Fig. 6 and Fig. 7 simultaneously.Article two, the relation of curve shows that the output voltage of soil pressure sensor 8 always is less than the output voltage of power sensor 16, illustrates that the soil layer of soil pressure sensor 8 tops plays certain abirritation to soil stress.Article two, in curve, rising part is loading procedure, i.e. the sagging process of pressing plate 17; The part that falls slightly after rise is pressure maintaining period, these process pressing plate 17 shift invariants; Falling part after rise fast is uninstall process, i.e. pressing plate 17 rise processes.
Above embodiment is only explanation technological thought of the present utility model, can not limit protection domain of the present utility model with this, every technological thought according to the utility model proposes, any change of doing on the technical scheme basis, within all falling into the utility model protection domain; The technology that the utility model does not relate to all can be realized by prior art.
Claims (6)
1. a soil pressure sensor is installed loading test device, comprise perforating mechanism, bury mechanism underground and load mechanism for testing, it is characterized in that: perforating mechanism comprises that one can be at the upper mobile support (3) of track (5), the pilot sleeve (2) of adjustable-angle is housed on support (3), and the section within it of being equipped with in pilot sleeve (2) slides up and down and is with graduated soil sample barrel (1), bury clamping cylinder (9) that mechanism comprises a clamping soil pressure sensor (8) underground, be placed in the push rod (10) that withstands soil pressure sensor (8) in clamping cylinder (9) and for the push rod (12) of landfill, load mechanism for testing and comprise the stand (13) be installed on guide rail (5), stand (13) is provided with the hydraulic cylinder (14) be connected with hydraulic feed system (20) by oil pipe (19), the piston rod top that the hydraulic cylinder (14) vertically arranged is provided with displacement transducer (15) and hydraulic cylinder (14) is provided with the pressing plate (17) that is positioned at soil pressure sensor (8) top, be provided with power sensor (16) between the piston rod top of pressing plate (17) and hydraulic cylinder (14), soil pressure sensor (8), displacement transducer (15) is connected with information handling system (22) with information acquisition system (21) by signal wire (11) respectively successively with power sensor (16).
2. soil pressure sensor according to claim 1 is installed loading test device, it is characterized in that described support (3) is provided with shaft collar (7) and shaft collar (7) is provided with rotating angle scale (6), angle scale is welded with pilot sleeve (2) on (6).
3. soil pressure sensor according to claim 1 is installed loading test device, it is characterized in that described soil sample barrel (1) comprises circular soil sample barrel and square soil sample barrel.
4. soil pressure sensor according to claim 1 is installed loading test device, it is characterized in that described perforating mechanism also comprises a clear earthenware (4) matched with soil sample barrel (1).
5. soil pressure sensor according to claim 1 is installed loading test device, it is characterized in that described track (5) adopts holdfast (18) fixing.
6. soil pressure sensor according to claim 1 is installed loading test device, it is characterized in that described information acquisition system (21) and information handling system (22) are placed on objective table (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203716724U CN203337473U (en) | 2013-06-26 | 2013-06-26 | Soil pressure sensor mounting and loading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203716724U CN203337473U (en) | 2013-06-26 | 2013-06-26 | Soil pressure sensor mounting and loading test device |
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| CN203337473U true CN203337473U (en) | 2013-12-11 |
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| CN2013203716724U Expired - Fee Related CN203337473U (en) | 2013-06-26 | 2013-06-26 | Soil pressure sensor mounting and loading test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278395A (en) * | 2013-06-26 | 2013-09-04 | 南京农业大学 | Soil pressure sensor mounting, loading and testing device, and operating method thereof |
| CN111521313A (en) * | 2020-05-08 | 2020-08-11 | 东南大学 | Soil pressure box mounting device and method |
| CN117074199A (en) * | 2023-09-05 | 2023-11-17 | 广州番禺职业技术学院 | Deep foundation pit soil pressure measuring device and measuring method thereof |
-
2013
- 2013-06-26 CN CN2013203716724U patent/CN203337473U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278395A (en) * | 2013-06-26 | 2013-09-04 | 南京农业大学 | Soil pressure sensor mounting, loading and testing device, and operating method thereof |
| CN111521313A (en) * | 2020-05-08 | 2020-08-11 | 东南大学 | Soil pressure box mounting device and method |
| CN117074199A (en) * | 2023-09-05 | 2023-11-17 | 广州番禺职业技术学院 | Deep foundation pit soil pressure measuring device and measuring method thereof |
| CN117074199B (en) * | 2023-09-05 | 2024-04-19 | 广州番禺职业技术学院 | Deep foundation pit soil pressure measuring device and measuring method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20140626 |
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| EXPY | Termination of patent right or utility model |