CN102900064A - Micro static force penetrometer - Google Patents
Micro static force penetrometer Download PDFInfo
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- CN102900064A CN102900064A CN2012104582731A CN201210458273A CN102900064A CN 102900064 A CN102900064 A CN 102900064A CN 2012104582731 A CN2012104582731 A CN 2012104582731A CN 201210458273 A CN201210458273 A CN 201210458273A CN 102900064 A CN102900064 A CN 102900064A
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Abstract
The invention discloses a micro static force penetrometer which comprises a probe, a probe rod, a microcomputer and a handle, wherein the probe comprises an outer cylinder, a strain cylinder, a force guide rod and a conical head; a strain sheet is arranged on the cylinder wall of the strain cylinder; the probe rod is cylindrical; an outer thread is arranged at one end of the probe rod and an inner thread is arranged at the other end of the probe rod; a clamping head which is used for clamping the handle on the probe rod is arranged at one end of the handle; a bayonet which is used for containing the probe rod is arranged on the clamping head; the microcomputer comprises a display apparatus which is used for displaying pressure data and a host; and the host is connected with the strain sheet through a wire. The micro static force penetrometer has the advantages of being light in weight, small in volume and convenient in carrying and field construction, greatly improving the work efficiency of the detection and the like.
Description
Technical field
The present invention relates to a kind of miniature static penetrometer.
Background technology
In the electric power transmission engineering construction, all to extract the ground related data to the geotechnical investigation at the electric power transmission engineering services place that will build, come to be the engineering construction service.
There are following characteristics in the transmission line of electricity geotechnical investigation: 1) spatial extent is large: every transmission line of electricity is from several kilometers to up to a hundred kilometers, and spatial extent is large, and job area is wide; 2) the setting position is many: transmission line of electricity limits every kilometer according to electric pressure and landform usually several base tower positions, and a transmission line of electricity has tens towers up to a hundred positions, and every base tower position need to provide separately foundation soil geotechnical engineering parameter, and workload is large; 3) geotechnical engineering complicated condition: a transmission line of electricity is crossed over multiple topography and geomorphology usually, geotechnical engineering condition kind numerous and complicated, per two adjacent exploratory point distance rice up to a hundred at least.4) the field process time relatively short and method is incomplete, especially 220kV and following power transmission engineering, the field operation time cycle is shorter, and rules require per 3 ~ 5 base cloths of same landform unit to put an exploratory point, itself lacks certain preciseness.
The geotechnical investigation means mainly contain the methods such as artificial minor thread brill, test pit, static sounding and probing at present, and generaI investigation on a large scale can be used the method for physical prospecting.Behind the location, working drawing stage shaft tower position, it is main that geotechnical investigation generally adopts artificial minor thread to bore, and is aided with the probing of static sounding and rig.Static sounding mainly adopts 2T/3T lightweight static contact-detection machine, and minority adopts the 10T static contact-detection machine.Probing is most 30 types, 50 types, 100 type portable engineering drills of adopting then.Test pit is multiplex in the mountain area in wherein using aspect power circuit, the 10T static sounding is multiplex in important leap, high load capacity tower, the rig probing is multiplex in important leap, high load capacity tower, and the area that can not finish of other means, this three kinds of application relatively less, bore with artificial minor thread at present, the 2T/3T static sounding is the most extensive.
Artificial minor thread bores light, simple to operate, and soil is described intuitively, and job schedule is relatively very fast, and is low to site requirements, and the 2T/3T static sounding is comparatively light, and objective data is accurate, puts down in writing continuously the soil layer situation of change, and site requirements is relatively low.But this two kinds of exploration meanses or existent defect.Minor thread bores a whole set of quality about 30kg, and a whole set of quality of 2T/3T lightweight static contact-detection machine is about 120 ~ 150kg.
The pattern of carrying out at present the overhead wire geotechnical investigation is: form the work group with electric, structure, measurement, each specialty of ground, carry out simultaneously geotechnical investigation in route selection, location.Senior degree is carried at 5m in general Plain, hillock, terrace, mountain area, so mainly bore as main prospecting means take artificial minor thread.But there are several drawbacks: the one, there is not objective data to judge the foundation soil engineering parameter; The 2nd, although manually minor thread bores the operation construction comparatively fast, can not mate with power overhead network group progress.The 3rd, prospecting depth is limited, needs the staff slightly many
The probe of the at present the lightest light static penetrometer of 2T is the long-pending 10mm of being of the conical surface
2, length is about 200mm, needs the complicated three-stage speed change mechanism of a cover, so make whole heaviness, needs 4 experienced operator's operations, wastes time and energy.
Summary of the invention
The present invention is the weak point that exists in the above-mentioned prior art for avoiding, and a kind of miniature static penetrometer is provided, with the volume and weight that reduces cone penetrometer so that cone penetrometer can miniaturization so that carry and construct.
The present invention is the technical solution problem, and a kind of miniature static penetrometer is provided.
Miniature static penetrometer, its design feature are to comprise probe, feeler lever, microcomputer and handle;
Described probe comprises urceolus, strain tube, force-guided stem and conehead; Described urceolus is the cylinder of both ends open, and the two ends of the inner tube wall of urceolus are equipped with internal thread, and described strain tube is located among the inner chamber of described urceolus; Described strain tube is end sealing and the cylinder of other end opening, is provided with the external screw thread that the internal thread with the inner tube wall of urceolus is complementary on the outer peripheral face of opening one end of described strain tube, is provided with foil gauge on the barrel of described strain tube; Described force-guided stem is cylinder, and the outer peripheral face of the lower end of force-guided stem is provided with external screw thread, also is provided with positive stop lug boss on the outer peripheral face of described force-guided stem; The upper end of described force-guided stem is inserted among the inner chamber of described strain tube, and the thread segment of the lower end of described force-guided stem stretches out in outside described urceolus and the described strain tube; Described conehead offers interior shoulder hole, and the lower end of described interior shoulder hole is internal thread hole; Described conehead is located at the below of described urceolus, and the mode that matches with the thread segment of described force-guided stem lower end with its internal thread hole of conehead is fixed in the bottom of force-guided stem; The lower end of described urceolus is provided with plug screw, and the soffit of the positive stop lug boss of described strain tube and the end face of described plug screw connect;
Described feeler lever is cylindrical shape, and an end of described feeler lever is provided with external screw thread, and the other end of described feeler lever is provided with internal thread; When described feeler lever was connected with described probe, the externally threaded end that has of feeler lever screwed in the upper end internal thread hole of probe;
One end of described handle is provided with for the dop that handle is connected on the described feeler lever, and described dop is provided with for the bayonet socket that feeler lever is contained in wherein;
Described microcomputer comprises for the display device and the main frame that show pressure data; Described main frame is connected with described foil gauge by wire.
Miniature static penetrometer of the present invention also has following technical characterstic.
Also be provided with the strain compensation sheet on the barrel of described strain tube.
The barrel of described strain tube is provided with two foil gauges and two strain compensation sheets.
Compared with the prior art, beneficial effect of the present invention is embodied in:
Miniature static penetrometer of the present invention, owing to adopted the module composition probes such as urceolus, strain tube, force-guided stem plug screw and conehead, at strain tube foil gauge and strain compensation sheet are set, weight and volume miniaturization that can probe is whole, and so that static penetrometer can miniaturization, thereby be convenient to survey construction in the open air.During construction, feeler lever and probe are linked together, add handle and be stuck on the probe, the staff presses and turning handle with subordinate, can be so that feeler lever and probe deepen continuously within the soil body.
During probing, when conehead enters the thrust F that is subject to foundation soil in the soil, can conduct to force-guided stem, force-guided stem passes to strain tube by bead, thereby become tensile stress pushing away stress, under action of pulling stress, strain tube barrel generation small strain, this small strain is in the strain tube elastic strain range, so strain is linear strain, foil gauge can be converted to resistance conversion with this small strain, thereby by instrument solution read record, thereby obtain the foundation soil Resistance Value.By such optimization, satisfy circuit foundation soil parameter request.Consider the durable and abrasion resistance of system, for key position, such as probe outer wall cylinder, conehead etc. can adopt more wear-resisting alloy material after experiment finishes, to improve system application life.
Miniature static penetrometer of the present invention, have the weight and volume that can reduce static penetrometer so that static penetrometer can miniaturization, easy to carry and can greatly improve the advantages such as operating efficiency of detection.
Description of drawings
Fig. 1 is the structural representation of miniature static penetrometer of the present invention.
Fig. 2 is the structural representation of the probe of miniature static penetrometer of the present invention.
Fig. 3 is the structural representation of urceolus of the probe of miniature static penetrometer of the present invention.
Fig. 4 is the structural representation of strain tube of the probe of miniature static penetrometer of the present invention.
Fig. 5 is the structural representation of force-guided stem of the probe of miniature static penetrometer of the present invention.
Fig. 6 is the structural representation of conehead of the probe of miniature static penetrometer of the present invention.
Fig. 7 is the structural representation of plug screw of the probe of miniature static penetrometer of the present invention.
Fig. 8 is the structural representation of the handle of miniature static penetrometer of the present invention.
Fig. 9 is the structural representation of the feeler lever of miniature static penetrometer of the present invention.
Label in accompanying drawing 1～accompanying drawing 9: 1 urceolus, 2 strain tubes, 3 force-guided stems, 31 positive stop lug boss, 4 coneheads, 41 interior shoulder holes, 5 plug screws, 6 foil gauges, 7 strain compensation sheets, 8 wires, 9 probes, 10 feeler levers, 11 microcomputers, 12 handles, 121 dops, 1211 bayonet sockets, 13 confinement tube, 14 pedals.
Below by the specific embodiment, the invention will be further described.
The specific embodiment
Participate in Fig. 1～Fig. 9, miniature static penetrometer comprises probe 9, feeler lever 10, microcomputer 11 and handle 12.
Described probe 9 comprises urceolus 1, strain tube 2, force-guided stem 3 and conehead 4; Described urceolus 1 is the cylinder of both ends open, and the two ends of the inner tube wall of urceolus 1 are equipped with internal thread, and described strain tube is located among the inner chamber of described urceolus 1; Described strain tube 2 is end sealing and the cylinder of other end opening, is provided with the external screw thread that the internal thread with the inner tube wall of urceolus 1 is complementary on the outer peripheral face of opening one end of described strain tube 2, is provided with foil gauge 6 on the barrel of described strain tube 2; Described force-guided stem 3 is cylinder, and the outer peripheral face of the lower end of force-guided stem 3 is provided with external screw thread, also is provided with positive stop lug boss 31 on the outer peripheral face of described force-guided stem 3; The upper end of described force-guided stem 3 is inserted among the inner chamber of described strain tube 2, and the thread segment of the lower end of described force-guided stem 3 stretches out in outside described urceolus 1 and the described strain tube 2; Described conehead 4 offers interior shoulder hole 41, and the lower end of described interior shoulder hole 41 is internal thread hole; Described conehead 4 is located at the below of described urceolus 1, and the mode that matches with the thread segment of described force-guided stem 3 lower ends with its internal thread hole of conehead 4 is fixed in the bottom of force-guided stem 3; The lower end of described urceolus 1 is provided with plug screw 5, and the soffit of the positive stop lug boss 31 of described strain tube 2 and the end face of described plug screw 5 connect.
Described feeler lever 10 is cylindrical shape, and an end of described feeler lever 10 is provided with external screw thread, and the other end of described feeler lever 10 is provided with internal thread; When described feeler lever 10 was connected with described probe 9, the externally threaded end that has of feeler lever 10 screwed in the upper end internal thread hole of probe 9.
One end of described handle 12 is provided with for the dop 121 that handle 12 is connected on the described feeler lever 10, and described dop 121 is provided with for the bayonet socket 1211 that feeler lever 10 is contained in wherein;
Described microcomputer 11 comprises for the display device and the main frame that show pressure data; Described main frame is connected with described foil gauge 6 by wire 8.
Also be provided with strain compensation sheet 7 on the barrel of described strain tube 2.
The barrel of described strain tube 2 is provided with two foil gauges 6 and two strain compensation sheets 7.
During construction, with the externally threaded end of being provided with of feeler lever screw in probe the upper end so that probe tighten together with feeler lever.Because the feeler lever upper end is provided with inside groove, the groove inwall has internal thread, and described internal thread can match with the external screw thread of another feeler lever, connects so that many feeler levers can join end to end, thereby can connect successively many feeler levers on a probe.Ground in the needs probing arranges confinement tube 13, is provided with pedal 14 around the described confinement tube 13, so that the staff can step down on the pedal 14.Probe and feeler lever enter in the confinement tube 13 successively, and the bayonet socket of handle is stuck on the feeler lever, and the staff presses and turning handle with subordinate, get final product so that feeler lever and probe deepen continuously within the soil body.When feeler lever is depressed into to a certain degree, continue again to connect next root feeler lever, probe can be deep into underground 3m～5m.The wire that connects on the foil gauge of probe is pulled out from the feeler lever upper end by the cavity of feeler lever, wire is connected on the main frame of microcomputer, so that microcomputer can gather the signal that the minor variations of foil gauge produces, by microcomputer this signal is carried out being converted into the soil pressure data after the analyzing and processing, show that at display device the staff can analyze the physical characteristic in this local soil according to pressure data.
According to the scope of application of miniature static sounding and the characteristics of applicable object, the index of correlation of miniature static sounding design is as follows: 1) prospecting depth: 5m; 2) applicable stratum: stream moulds ~ hard plastic state clay/silty clay, mud, mucky soil, loose ~ slightly close state silt, flour sand, and the excessive body of the above-mentioned soil body; 3) portability is better than artificial minor thread brill, and the complete equipment quality is no more than 10kg; 4) operation requirements is easy, and 1 ~ 2 people gets final product operation, and job scheduling is better than artificial minor thread and bores.
Strain tube is located within the urceolus and is threaded connection with described urceolus and matches, and the external screw thread of strain tube lower end matches with the internal thread of urceolus bottom, and Open Side Down for strain tube.Force-guided stem the first half stretches in the inner chamber of described strain tube, the part of the latter half is arranged in the inner chamber of urceolus, a part is stretched out outside the urceolus, the part of stretching out outside the urceolus is the thread segment of force-guided stem, this thread segment matches with the internal thread of conehead so that conehead can and force-guided stem between fix.Plug screw screws in the lower end of urceolus, is complementary with urceolus internal thread bottom.Force-guided stem also passes from plug screw, and the positive stop lug boss of force-guided stem is stuck in the top of plug screw just, and plug screw can avoid force-guided stem to come off from strain tube.The latter half of plug screw is embedded in the larger hole of the first half diameter of interior shoulder hole of conehead.Foil gauge is attached on the surface of strain tube, is used for the external pressure that perception conehead and force-guided stem transmit.Through the signal intensity of monitoring foil gauge output, can detect the external pressure size of probe.
Probe and feeler lever material are selected the low-carbon alloy Steel material.The foil gauge of miniature static penetrometer is selected BF350 type foil gauge, and its substrate is modified phenolic; The grid silk is constantan (containing 40% nickel, the copper alloy of 1.5% manganese); Full-closed structure; Can realize simultaneously temperature self-compensation and creep self compensation.Foil gauge is the designs of four bridges, be attached on the strain tube, be used for the minor variations of monitor strain cylinder, wherein two is strain transducer, two is the parametric compensation sheet, because the strain tube diameter only is 5.4mm, so select the strain transducer flat opposed, parametric compensation sheet flat opposed, and two groups place adjacent horizontal level.The probe inside conductor adopts 0.2mm wear resistant paint envelope curve.
During probing, when conehead enters the thrust F that is subject to foundation soil in the soil, can conduct to force-guided stem, force-guided stem passes to strain tube by bead, thereby become tensile stress pushing away stress, under action of pulling stress, strain tube barrel generation small strain, this small strain is in the strain tube elastic strain range, so strain is linear strain, foil gauge can be converted to resistance conversion with this small strain, thereby by instrument solution read record, thereby obtain the foundation soil Resistance Value.By such optimization, satisfy circuit foundation soil parameter request.Consider the durable and abrasion resistance of system, for key position, such as probe outer wall cylinder, conehead etc. can adopt more wear-resisting alloy material after experiment finishes, to improve system application life.
The probe of miniaturization of the present invention, it is clumsy to have abandoned traditional probe, and depth of exploration can satisfy most circuit prospectings, so can greatly increase work efficiency.The sounding device overall weight that is made of this miniature static sounding probe can be controlled in about 10kg, bore lightweight more than existing 2T/3T lightweight static contact-detection machine and artificial minor thread, portable, quick, quantification of targets, except the geotechnical investigation that can be used for overhead wire, at other numerous areas extensive, important purposes is arranged also.
Claims (3)
1. miniature static penetrometer is characterized in that, comprises probe (9), feeler lever (10), microcomputer (11) and handle (12);
Described probe (9) comprises urceolus (1), strain tube (2), force-guided stem (3) and conehead (4); Described urceolus (1) is the cylinder of both ends open, and the two ends of the inner tube wall of urceolus (1) are equipped with internal thread, and described strain tube is located among the inner chamber of described urceolus (1); Described strain tube (2) is that an end seals and the cylinder of other end opening, be provided with the external screw thread that the internal thread with the inner tube wall of urceolus (1) is complementary on the outer peripheral face of opening one end of described strain tube (2), be provided with foil gauge (6) on the barrel of described strain tube (2); Described force-guided stem (3) is cylinder, and the outer peripheral face of the lower end of force-guided stem (3) is provided with external screw thread, also is provided with positive stop lug boss (31) on the outer peripheral face of described force-guided stem (3); The upper end of described force-guided stem (3) is inserted among the inner chamber of described strain tube (2), and the thread segment of the lower end of described force-guided stem (3) stretches out in outside described urceolus (1) and the described strain tube (2); Described conehead (4) offers interior shoulder hole (41), and the lower end of described interior shoulder hole (41) is internal thread hole; Described conehead (4) is located at the below of described urceolus (1), and the mode that matches with the thread segment of described force-guided stem (3) lower end with its internal thread hole of conehead (4) is fixed in the bottom of force-guided stem (3); The lower end of described urceolus (1) is provided with plug screw (5), and the soffit of the positive stop lug boss (31) of described strain tube (2) and the end face of described plug screw (5) connect.
Described feeler lever (10) is cylindrical shape, and an end of described feeler (10) is provided with external screw thread, and the other end of described feeler lever (10) is provided with internal thread; Described feeler lever (10) and described probe (9) are when being connected, and the externally threaded end that has of feeler lever (10) screws in the upper end internal thread hole of probe (9);
One end of described handle (12) is provided with for the dop (121) that handle (12) is connected on the described feeler lever (10), and described dop (121) is provided with for the bayonet socket (1211) that feeler lever (10) is contained in wherein;
Described microcomputer (11) comprises for the display device and the main frame that show pressure data; Described main frame is connected with described foil gauge (6) by wire (8).
2. miniature static penetrometer according to claim 1 also is provided with strain compensation sheet (2) on the barrel of described strain tube (2).
3. miniature static penetrometer according to claim 2 is characterized in that, the barrel of described strain tube (2) is provided with two foil gauges (6) and two strain compensation sheets (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210458273.1A CN102900064B (en) | 2012-11-14 | 2012-11-14 | Micro static force penetrometer |
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| CN201210458273.1A CN102900064B (en) | 2012-11-14 | 2012-11-14 | Micro static force penetrometer |
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| CN102900064A true CN102900064A (en) | 2013-01-30 |
| CN102900064B CN102900064B (en) | 2014-10-29 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891444A (en) * | 2016-04-07 | 2016-08-24 | 中国水利水电科学研究院 | Device used for detecting moisture in dry soil |
| CN106546480A (en) * | 2015-09-22 | 2017-03-29 | 中国电力工程顾问集团华北电力设计院有限公司 | The test device of soft clay undrained shear strength |
| CN107504936A (en) * | 2017-09-25 | 2017-12-22 | 江苏省水利科学研究院 | Mud detecting system and mud detection method |
| CN108874024A (en) * | 2017-05-16 | 2018-11-23 | 上海朝辉压力仪器有限公司 | Pedal controls transmitter |
| CN108955594A (en) * | 2018-07-31 | 2018-12-07 | 五冶集团上海有限公司 | A kind of earth excavation underground geophysical prospecting needle |
| CN109594548A (en) * | 2019-01-26 | 2019-04-09 | 台州市迪信勘察仪器有限公司 | A kind of static sounding casing head and its set pipe assembly with the casing head |
| CN112904411A (en) * | 2021-01-21 | 2021-06-04 | 安徽华电工程咨询设计有限公司 | Wave velocity array test probe and test method for optical fiber transmission signals |
| CN113737764A (en) * | 2021-09-02 | 2021-12-03 | 中铁时代建筑设计院有限公司 | Static sounding device and static sounding method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106546480A (en) * | 2015-09-22 | 2017-03-29 | 中国电力工程顾问集团华北电力设计院有限公司 | The test device of soft clay undrained shear strength |
| CN105891444A (en) * | 2016-04-07 | 2016-08-24 | 中国水利水电科学研究院 | Device used for detecting moisture in dry soil |
| CN108874024A (en) * | 2017-05-16 | 2018-11-23 | 上海朝辉压力仪器有限公司 | Pedal controls transmitter |
| CN108874024B (en) * | 2017-05-16 | 2023-12-26 | 上海朝辉压力仪器有限公司 | pedal control transmitter |
| CN107504936A (en) * | 2017-09-25 | 2017-12-22 | 江苏省水利科学研究院 | Mud detecting system and mud detection method |
| CN108955594A (en) * | 2018-07-31 | 2018-12-07 | 五冶集团上海有限公司 | A kind of earth excavation underground geophysical prospecting needle |
| CN109594548A (en) * | 2019-01-26 | 2019-04-09 | 台州市迪信勘察仪器有限公司 | A kind of static sounding casing head and its set pipe assembly with the casing head |
| CN112904411A (en) * | 2021-01-21 | 2021-06-04 | 安徽华电工程咨询设计有限公司 | Wave velocity array test probe and test method for optical fiber transmission signals |
| CN113737764A (en) * | 2021-09-02 | 2021-12-03 | 中铁时代建筑设计院有限公司 | Static sounding device and static sounding method |
| CN113737764B (en) * | 2021-09-02 | 2023-04-14 | 中铁时代建筑设计院有限公司 | Static sounding device and static sounding method |
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