CN103063175B - Hanging-type electric displacement measuring device - Google Patents
Hanging-type electric displacement measuring device Download PDFInfo
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- CN103063175B CN103063175B CN201210555046.0A CN201210555046A CN103063175B CN 103063175 B CN103063175 B CN 103063175B CN 201210555046 A CN201210555046 A CN 201210555046A CN 103063175 B CN103063175 B CN 103063175B
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Abstract
The invention discloses a hanging-type electric displacement measuring device. The hanging-type electric displacement measuring device comprises a power converter, a displacement cable drum, a datum line beam, a weight keeper, a steel strand, a sliding instrument, a displacement sensor, a measuring instrument, a first safety buckle, a fixed pulley, a cable and a second safety buckle. One end of the cable is wound on the displacement cable drum, and the other end of the cable penetrates through the second safety buckle and is connected with the tail portion of the measuring instrument. The fixed pulley is fixedly connected on the datum line beam. The steel strand is wound on the fixed pulley, and two ends of the steel strand are respectively connected with the first safety buckle and the second safety buckle. The first safety buckle is fixedly connected with the weight keeper, and the second safety buckle is fixedly connected with the cable. The sliding instrument is connected on the datum line beam and comprises a sliding block. The surface of the sliding block contacts the displacement sensor. The displacement sensor is connected on the datum line beam. The steel strand penetrates through the sliding block and is fixedly connected with the sliding block. By means of the hanging-type electric displacement measuring device, pile body displacement measuring precision can be improved, steel wire winding can be avoided, and application is safe and reliable.
Description
Technical field
The invention belongs to displacement measuring means technical field in pile foundation detection, specifically, relate to a kind of suspended type electric displacement measuring means.
Background technology
Stake inner displacement measures general rigid rod and two kinds of method for measurement of wire of adopting both at home and abroad at present.The former has been widely used since using always, and it need to extend place, ground by rigid rod at pile body measured displacement place ornaments rigid rod, lays displacement transducer carry out displacement measurement in masthead portion.But even surpass 100m along with drilled pile is more and more longer, the inherent shortcoming of this method starts to manifest, rigid rod, because buckling phenomenon will appear in gravity and other a variety of causes, causes displacement in transmittance process, to have obvious distortion phenomenon.At present external improving one's methods is to adopt the rigid rod method of delivering in relays.Think that rigid rod transmission should control length in about 20m abroad, about every section of long 20m of rigid rod, with sensor, measure this section and move and be passed to ground, be total displacement by multistage is displacement superposed.Obviously, because the method is intrinsic, every section of displacement counts the impact of sensor error in measurement, and the transmission of multistage overlay error is larger; Its technique relative complex in addition, Master Cost is higher, therefore, though the more traditional stake inner displacement of this method of testing measures, improves to some extent, and uses at home lessly, still adopts one section of traditional rigid rod method of testing.
Wire suspended measuring needs to suspend a fixer in midair to test position with a steel wire, need an other steel wire to control the fixing of part realization and piecing devices of stretching one's legs of fixer simultaneously, due to the Action of Gravity Field of fixer and transfer darker, two steel wires that separate are easily wound around, once there is wrapping phenomena, fixer will be stuck in pillar, not only cannot measure stake inner displacement, to test, make troubles, and fixer also cannot reclaim, cause certain economic loss.
Summary of the invention
Technical matters: technical matters to be solved by this invention is: a kind of suspended type electric displacement measuring means is provided, this displacement measuring means can improve the displacement measurement accuracy of pile body inside, especially the ultra-long pile that is greater than 30 meters for length, and this displacement measuring means can be avoided steel wire winding, and application safety is reliable.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of suspended type electric displacement measuring means, it is characterized in that, this displacement measuring means comprises power supply changeover device, displacement cable disk, datum line beam, balancing weight, steel strand wires, slip instrument, displacement transducer, measurement instrument, the first safety buckle, fixed pulley, cable and the second safety buckle;
Power supply changeover device is positioned at by displacement cable disk, one end of cable is wrapped on displacement cable disk, the other end of cable is connected with the afterbody of measurement instrument through the second safety buckle, fixed pulley is fixedly connected on datum line beam, steel strand wires are on fixed pulley, steel strand wires two ends connect respectively the first safety buckle and the second safety buckle, the first safety buckle is fixedly connected with balancing weight, the second safety buckle is fixedly connected with cable, slip instrument is fixedly connected on datum line beam, slip instrument comprises movably sliding shoe, the surface of sliding shoe contacts with displacement transducer, displacement transducer is connected to datum line beam by Magnetic gauge stand, steel strand wires pass sliding shoe, and are fixedly connected with sliding shoe.
Beneficial effect: compared with prior art, technical scheme of the present invention has following beneficial effect:
1. reliability is strong.With respect to conventional rigid bar and wire measurement technology, suspended type electric displacement measuring means of the present invention adopts flexible collimation method test, the pre-buried pillar that contains displacement location joint in formation of pile, during test, by sus-pension, measurement instrument is put to the test position to appointment, displacement transducer is connected with slip instrument, realizes the measurement of this place's upper and lower displacement.After test finishes, by switch, control a pawl electric retractable of measurement instrument, for reclaiming.Measuring equipment of the present invention adopts electromagnetic potential shift cable line, can utilize displacement pillar to detect, difficulty and workload while having reduced the load box installation being caused by classic method, the quality of assurance pile, is particularly suitable for the measurement of overlength stake inner displacement.
2. measure precisely long service life.Suspended type electric displacement measuring means of the present invention does not need directly to connect load box or other precalculated positions, and measurement instrument and cable are fixed, and cable is single cable, has reduced the impact of equipment self on accuracy of measurement, makes measurement result more accurate.Meanwhile, single cable there will not be the problems such as winding, has greatly improved measurement corollary apparatus and has reused the life-span.
3 economy are strong.Suspended type electric displacement measuring means of the present invention, from the angle of electronic control, makes displacement measurement work more easy, when guaranteeing measurement accuracy, saves time and laborsaving.Meanwhile, due to the advantage of electronic control, make to measure process safety reliable, Correlated Case with ARMA Measurement device can be reused, and has saved pile foundation testing cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, have: power supply changeover device 1, displacement cable disk 2, datum line beam 3, balancing weight 4, steel strand wires 5, slip instrument 6, displacement transducer 7, measurement instrument 8, the first safety buckle 9, fixed pulley 10, cable 11, sliding shoe 601, tailstock 801, a pawl 802, heavy cone 803, displacement location joint 12, pile body 13, the second safety buckle 14.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.
As shown in Figure 1, a kind of suspended type electric displacement measuring means of the present invention, comprises power supply changeover device 1, displacement cable disk 2, datum line beam 3, balancing weight 4, steel strand wires 5, slip instrument 6, displacement transducer 7, measurement instrument 8, the first safety buckle 9, fixed pulley 10, cable 11 and the second safety buckle 14.It is other that power supply changeover device 1 is positioned at displacement cable disk 2.Cable 11 comprises two wires and a steel twisted wire.One end of cable 11 is wrapped on displacement cable disk 2, and the other end of cable 11 is connected with the afterbody of measurement instrument 8 through the second safety buckle 14.Fixed pulley 10 is fixedly connected on datum line beam 3.Steel strand wires 5 are on fixed pulley 10.Steel strand wires 5 two ends connect respectively the first safety buckle 9 and the second safety buckle 14, the first safety buckles 9 are fixedly connected with balancing weight 4, and the second safety buckle 14 is fixedly connected with cable 11.Slip instrument 6 is fixedly connected on datum line beam 3.Slip instrument 6 comprises movably sliding shoe 601.The surface of sliding shoe 601 contacts with displacement transducer 7.Displacement transducer 7 is connected on datum line beam 3 by Magnetic gauge stand.Steel strand wires 5 pass sliding shoe 601, and are fixedly connected with sliding shoe 601.
Further, described measurement instrument 8 comprises tailstock 801, a pawl 802, heavy cone 803, pawl connecting rod and electromagnet, tailstock 801 is provided with bolt hole, the bolt hole of tailstock 801 is connected with cable 11 by lifting bolt, tailstock 801 is connected to the end of heavy cone 803, and a pawl 802 is hinged on the sidewall of heavy cone 803, and electromagnet is arranged in the inner chamber of heavy cone 803, prop up pawl 802 and connect an electromagnet by a pawl connecting rod, electromagnet is connected with cable 11.As preferred version, a described pawl 802 is two, and is symmetrically distributed on the sidewall of heavy cone 803.When electromagnet is not switched on, a pawl 802, because of gravity and spring action, opens naturally.When electromagnet is switched on, a pawl connecting rod moves upward, thereby drives a pawl 802 to regain.
The principle of work of the suspended type electric displacement measuring means of said structure is: flexible cable 11 is by fixed pulley 10 and balancing weight 4, because Action of Gravity Field keeps tensile state.Flexible cable 11 one end are fixed on measurement instrument 8, and measurement instrument 8 is positioned at pile body inside.A pawl 802 of measurement instrument 8 is controlled it by power supply changeover device 1 and is opened and closure, a pawl 802 is embedded to and is being embedded on the displacement location joint 12 of pile body 13.Like this, the mobile flexible cable 11 that drives of pile body 13 is synchronized with the movement, thereby reaches the object of transmitting displacement.
The installation process of the suspended type electric displacement measuring means of said structure is: first, the lifting bolt of one end of cable 11 is connected in the bolt hole of measurement instrument 8, cable 11 is connected with the electromagnet in measurement instrument 8, and the other end of cable 11 is walked around to the second safety buckle 14, cable 11 is wrapped on displacement cable disk 2; Because of Action of Gravity Field, cable between the second safety buckle 14 and measurement instrument 8 11 keeps tensioning states, thus below the second safety buckle 14 with capel by cable 11 fastenings, avoid cable 11 to fall down always; Then, fixed pulley 10 and slip instrument 6 are separately fixed on datum line beam 3, one end of steel strand wires 5 is through slip instrument 6, steel strand wires 5 are fixedly connected with sliding shoe 601, the other end of steel strand wires 5 is walked around fixed pulley 10, by the first safety buckle 9 and the second safety buckle 14 respectively with the two ends bind of steel strand wires 5, then balancing weight 4 is hung in this first safety buckle 9; Then, the output port of power source of power supply changeover device 1 is connected with the power input mouth of displacement cable disk 2, switch on power, a pawl 802 is contraction state, utilizes displacement cable disk 2 to discharge cable 11, measurement instrument 8 is placed in pile body 13, finally, when measurement instrument 8 arrives displacement location joint 12, powered-down, prop up pawl 802 and naturally open, and the end of a pawl 802 is embedded to the bottom surface at displacement locator sub 12.
The course of work of the suspended type electric displacement measuring means of above-mentioned structure is: before test, after pile body 13 pore-formings, pillar with displacement location joint 12 is sunk together with steel reinforcement cage, and displacement location joint 12 is arranged on requirement peg body 13 internal displacement places, then casting concrete pile.During test, pile body 13 is applied to external force, when pile body 13 moves downward, by being embedded to the pawl 802 on displacement locator sub 12, measurement instrument 8 also moves downward thereupon; When pile body 13 moves upward, because the dynamic balance effect between balancing weight 4 and safety buckle 9, balancing weight 4 moves down, and measurement instrument 8 moves up.That is to say, measurement instrument 8 is along with pile body 13 moves in the same way.The movement of measurement instrument 8 also can drive the synchronizing moving of steel strand wires 5.Because steel strand wires 5 are fixedly connected with the sliding shoe 601 on slip instrument 6, so sliding shoe 601 also moves in the same way with measurement instrument 8.Like this, the displacement transducer 7 contacting with sliding shoe 601 also moves thereupon.Displacement transducer 7 is delivered to the displacement information of its measurement in relevant device, can show the displacement of pile body 13.Measure and finish, in the time of need to reclaiming measurement instrument 8, first the output port of power source of power supply changeover device 1 is connected with the power input mouth of displacement cable disk 2, the control power supply of output electromagnet, after electromagnet energising, prop up pawl connecting rod and drive a pawl 802 to regain in grooves, then utilize displacement cable disk 2 to reclaim cables 11, measurement instrument 8 is enhanced from stake hole.
Claims (3)
1. a suspended type electric displacement measuring means, it is characterized in that, this displacement measuring means comprises power supply changeover device (1), displacement cable disk (2), datum line beam (3), balancing weight (4), steel strand wires (5), slip instrument (6), displacement transducer (7), measurement instrument (8), the first safety buckle (9), fixed pulley (10), cable (11) and the second safety buckle (14);
It is other that power supply changeover device (1) is positioned at displacement cable disk (2), one end of cable (11) is wrapped on displacement cable disk (2), the other end of cable (11) is connected with the afterbody of measurement instrument (8) through the second safety buckle (14), fixed pulley (10) is fixedly connected on datum line beam (3), steel strand wires (5) are on fixed pulley (10), steel strand wires (5) two ends connect respectively the first safety buckle (9) and the second safety buckle (14), the first safety buckle (9) is fixedly connected with balancing weight (4), the second safety buckle (14) is fixedly connected with cable (11), slip instrument (6) is fixedly connected on datum line beam (3), slip instrument (6) comprises movably sliding shoe (601), the surface of sliding shoe (601) contacts with displacement transducer (7), displacement transducer (7) is connected to datum line beam (3) by Magnetic gauge stand, steel strand wires (5) pass sliding shoe (601), and are fixedly connected with sliding shoe (601),
Described measurement instrument (8) comprises tailstock (801), a pawl (802), heavy cone (803), pawl connecting rod and electromagnet, tailstock (801) is provided with bolt hole, the bolt hole of tailstock (801) is connected with cable (11) by lifting bolt, tailstock (801) is connected to the end of heavy cone (803), propping up pawl (802) is hinged on the sidewall that weighs cone (803), electromagnet is arranged in the inner chamber of heavy cone (803), prop up pawl (802) and connect an electromagnet by a pawl connecting rod, electromagnet is connected with cable (11).
2. according to suspended type electric displacement measuring means claimed in claim 1, it is characterized in that, a described pawl (802) is two, and is symmetrically distributed on the sidewall of heavy cone (803).
3. according to suspended type electric displacement measuring means claimed in claim 1, it is characterized in that, described cable (11) comprises two wires and a steel twisted wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210555046.0A CN103063175B (en) | 2012-12-19 | 2012-12-19 | Hanging-type electric displacement measuring device |
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| CN201210555046.0A CN103063175B (en) | 2012-12-19 | 2012-12-19 | Hanging-type electric displacement measuring device |
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| CN103063175A CN103063175A (en) | 2013-04-24 |
| CN103063175B true CN103063175B (en) | 2014-03-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103471543A (en) * | 2013-09-17 | 2013-12-25 | 鞍山易兴自动化工程有限公司 | Spiral gas holder height indicator and using method thereof |
| CN105509683B (en) * | 2014-09-22 | 2020-04-24 | 贵州中建建筑科研设计院有限公司 | Displacement measuring device for self-balancing pile testing method |
| CN110260754A (en) * | 2019-07-12 | 2019-09-20 | 浙江欧感机械制造有限公司 | Electronic drag-line displacement detector |
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| JP2000321048A (en) * | 1999-05-07 | 2000-11-24 | Yazaki Corp | Apparatus for measuring bore diameter of die for small- gage wire |
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| US4326337A (en) * | 1980-05-01 | 1982-04-27 | Kawasaki Seitetsu Kabushiki Kaisha | Measuring instrument for the profile of piled charge of a blast furnace |
| CN1150203A (en) * | 1995-11-02 | 1997-05-21 | 徐晓原 | Method for immediately monitoring quality of pipe sinking poured pile |
| CN1388363A (en) * | 2002-07-19 | 2003-01-01 | 张百全 | Self-anchored loading method of testing axial bearing capacity of pile foundation |
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