CN205785163U - Hole vertical line strain measuring instrument - Google Patents

Hole vertical line strain measuring instrument Download PDF

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Publication number
CN205785163U
CN205785163U CN201620583626.4U CN201620583626U CN205785163U CN 205785163 U CN205785163 U CN 205785163U CN 201620583626 U CN201620583626 U CN 201620583626U CN 205785163 U CN205785163 U CN 205785163U
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CN
China
Prior art keywords
steel cylinder
vertical line
boring
sensing unit
measuring instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201620583626.4U
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Chinese (zh)
Inventor
张钧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INSTITUTE OF CRUSTAL DYNAMICS CHINA EARTHQUAKE ADMINISTRATION
Original Assignee
INSTITUTE OF CRUSTAL DYNAMICS CHINA EARTHQUAKE ADMINISTRATION
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Priority to CN201620583626.4U priority Critical patent/CN205785163U/en
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Publication of CN205785163U publication Critical patent/CN205785163U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

This utility model provides a kind of vertical line strain measuring instrument of holing, for the deformation of institute installation region is carried out vertical line strain measurement, including: sensing unit, vertical line strain in its sensing boring;And outer steel cylinder (11), sensing unit is contained in outer steel cylinder (11) by it.Sensing unit includes strain transducer (8), equivalent elastic modulus matching can (7), upper drive link (6) and underdrive bar (10), strain transducer (8) is installed in equivalent elastic modulus matching can (7), sensing unit is fixed in outer steel cylinder (11) by upper drive link (6) and underdrive bar (10), and underdrive bar (10) extends vertically out going to the bottom and being connected for soft between going to the bottom of outer steel cylinder (11).In this utility model, the deformation of outer steel cylinder (11) will not be transmitted to strain transducer (8), boring deformation can be delivered on strain transducer (8) along the direction of underdrive bar (10) by coupling cement, reaches to measure the purpose of vertical line strain.

Description

Hole vertical line strain measuring instrument
Technical field
This utility model relates to a kind of Mechanics of Machinery structure, electronic measurement system, particularly relates to a kind of for by boring The boring vertical line strain measuring instrument that vertical line strain is measured by cast coupled modes.
Background technology
In geophysics and geodesic survey, commonly used boring quasi-instrument, the crustal stress in boring, crustal strain are carried out Measure.In measurement, first punch in earth's crust detected part, then test probe is transferred to treat gaging hole section, use cement casting side Measuring cell is coupled by formula with hole wall, makes element reach the boundary condition that welding couples with hole wall.So, the change of rock in boring Shape will be delivered on probe, and stress-strain measurement element reaches the purpose measured according to this deformation.
In order to adapt to measure environment and the requirement of measurement, the mechanical structure of this quasi-instrument needs to meet isotropy or survey The requirement of amount other direction concrete moduli order of magnitude lower of direction ratio.Owing to boring is all cylindrical structural, therefore measure spy The profile of head is the most all cylindricality, and its horizontal direction equivalent elastic modulus is less than axially and other directions, and therefore level is in addition Strain measurement is the most difficult.
Utility model content
This utility model solves the technical problem that and is to overcome prior art defect, it is provided that a kind of Novel drilling is vertical Line strain measuring instrument, the annular of its sensing element or other shape shells be concrete moduli mate structure so that it is measure to etc. Effect modulus meets strain measurement requirement;Its outer steel cylinder is for sealing and supporting construction, and the force rod of sensing unit passes outer steel cylinder sense Strain variation outside by steel cylinder, line strain vertical in boring can be measured.
The purpose of this utility model is achieved through the following technical solutions:
A kind of vertical line strain measuring instrument of holing, surveys for the crust deformation of institute installation region is carried out vertical line strain Amount, including: sensing unit, vertical line strain in its sensing boring;And outer steel cylinder (11), described sensing unit is contained in by it Outer steel cylinder (11) is interior and supports described sensing unit, and wherein, described sensing unit includes strain transducer (8), Equivalent Elasticity mould Flux matched shell (7), upper drive link (6) and underdrive bar (10), described strain transducer (8) is installed on described Equivalent Elasticity mould In flux matched shell (7), described sensing unit is fixed on described outer steel cylinder by described upper drive link (6) and underdrive bar (10) (11), in, described underdrive bar (10) extends vertically out going to the bottom of described outer steel cylinder (11), and described underdrive bar (10) is with described For soft connection between the going to the bottom of outer steel cylinder (11).
Preferably, the going to the bottom of described outer steel cylinder (11) being provided with elastic "O"-ring, described underdrive bar (10) passes through institute State elastic "O"-ring (12) and stretch out going to the bottom of described outer steel cylinder (11).
Preferably, on the top of described outer steel cylinder (11) by seal head install screw (2), seal head "O"-ring (3) with Seal head (1) is fixing to be connected, and described seal head (1) has line outlet (4).
Preferably, described outer steel cylinder (11) only serves protection and supports the effect of described sensing unit, the deformation of itself Pair of strain sensors (8) does not the most produce impact.
Preferably, farther including sensor support frame (5), described sensor stand (5) is fixed with described seal head (1) Connecting, described upper drive link (6) is fixing with described sensor stand (5) to be connected with fixing described sensing unit.
Preferably, described equivalent elastic modulus matching can (7) is annular outer cover.
Preferably, one end stretching out described outer steel cylinder (11) of described underdrive bar (4) has correcting parts.
Preferably, the outer wall of described upper drive link (6) and underdrive bar (10) has screw thread, described strain transducer (8) Top and bottom be respectively provided with screwed hole, described upper drive link (6) is through the screwed hole of upper end and described underdrive bar (10) through the screwed hole of lower end, by screw-threaded engagement, strain transducer (8) and equivalent elastic modulus matching can (7) are fixed It is supported in described outer steel cylinder (11).
This utility model has following beneficial effect: above-mentioned boring vertical line strain measuring instrument, after being lifted into boring, makes Coupling is poured, owing to underdrive bar and outer steel cylinder use elastic "O"-ring to fix, for soft connection, because of in addition with special cement The deformation of steel cylinder will not be transmitted to sensing unit (strain measurement unit), and boring deformation can be by coupling cement along underdrive bar Direction is delivered on strain transducer, reaches to measure the purpose of vertical line strain.
Accompanying drawing explanation
Fig. 1 is the generalized section of boring line of dip strain gauge structure.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in detail.Following example are not to limit of the present utility model System.Under the spirit and scope conceived without departing substantially from utility model, those skilled in the art it is conceivable that change and advantage all by It is included in this utility model.
Below in conjunction with accompanying drawing, this utility model embodiment is described in further detail:
Boring vertical line strain measuring instrument as shown in Figure 1, for carrying out vertical line strain to the deformation of institute installation region Measure, including: sensing unit (6,7,8,10), vertical line strain in its sensing boring;And outer steel cylinder 11, it is by sensing unit In being contained in outer steel cylinder 11 and support this sensing unit.
Wherein, sensing unit includes strain transducer 8, equivalent elastic modulus matching can 7, upper drive link 6 and underdrive Bar 10.Strain transducer 8 is installed in equivalent elastic modulus matching can 7.Upper drive link 6 and underdrive bar 10 are by sensing unit It is fixed in outer steel cylinder 11.
Can obtain being suitable to measure wanting by choosing the different material of equivalent elastic modulus matching can 7, thickness and width The concrete moduli asked.In Fig. 1, equivalent elastic modulus matching can 7 is shaped as annular, in other embodiments, it is also possible to be square Other shapes such as shape or triangle, make strain transducer 8 be positioned at this matching can 7 as long as meeting, and those skilled in the art can According to circumstances matching can 7 is selected suitable shape and size.The effect of equivalent elastic modulus matching can 7 is mainly Give the hardness that strain transducer 8 is certain, measure such that it is able to use the mode of equivalent elastic modulus coupling to realize line strain.
Drive link 6 is described below and how sensing unit is fixed in outer steel cylinder 11 by underdrive bar 10.
As it is shown in figure 1, the top of steel cylinder 11 has seal head 1 outside, seal head installs screw 2, seal head "O"-ring 3 And line outlet 4.Outer steel cylinder 11 installs screw 2 by seal head, seal head "O"-ring 3 is overlapped and is inserted in seal head (upper seal head) 1 On, constitute closed cavity.The line outlet 4 of seal head 1 supplies the lead-in wires such as power supply and the signal of strain transducer 8 to be drawn by line outlet 4 Go out.Sensor stand 5 is fixing with seal head 1 to be connected, and upper drive link 6 is fixing with sensor stand 5 to be connected such that it is able to fix and pass Sense unit.
It addition, the outer wall of upper drive link 6 and underdrive bar 10 has screw thread, the top and bottom of strain transducer 8 are respectively Having a screwed hole, upper drive link 6, through the screwed hole of upper end and underdrive bar 10 through the screwed hole of lower end, so passes through spiral shell Stricture of vagina engages, and upper drive link 6 is fixing with strain transducer 8 and underdrive bar 10 is fixed with strain transducer 8, thus strain is passed Sensor 8 and equivalent elastic modulus matching can 7 are fixedly supported in outer steel cylinder 11.
That next introduces between underdrive bar 10 with outer steel cylinder 11 soft is connected.
Underdrive bar 10 extends vertically out between the going to the bottom of going to the bottom of described outer steel cylinder 11, underdrive bar 10 and outer steel cylinder 11 For soft connection.Here " extend vertically out " and refer to that underdrive bar 10 is with the horizontal the right angle of 90 degree.Specifically, this soft company Connecing and be achieved in that on the going to the bottom of outer steel cylinder 11 and be provided with elastic "O"-ring 12, underdrive bar 10 is by this elasticity " O " type It is outside to outer steel cylinder 11 that circle 12 stretches out going to the bottom of outer steel cylinder 11.Elastic "O"-ring 12 both can play sealing function, again can conduct Underdrive bar 10 is fixed in soft connection.Elastic "O"-ring 12 can be the resilient annular member of such as rubber washer etc..By this Elastic "O"-ring 12, outer steel cylinder 11 only serves protection and supports the effect of sensing unit, the deformation pair of strain sensors of itself 8 the most do not produce impact.
It addition, one end stretching out outer steel cylinder 11 of underdrive bar 4 has correcting parts 13, installation of conveniently going into the well.This correcting Parts 13 can be cross section be semicircle or the parts of analogous shape.
In actual use, first pass through drive link 6 and whole sensing unit is fixed on sensor support frame 5, then Being installed to by sensor support frame 5 on upper seal head 1, the power supply of strain transducer 8 and signal etc. go between by upper seal head Line outlet 4 is drawn, and then by underdrive bar 10 going to the bottom through outer steel cylinder 11, is inserted on upper seal head 1 by outer steel cylinder 11 set, structure Become closed cavity.Use the elastomeric elements such as "O"-ring 3 to seal between seal head 1 and outer steel cylinder 11, use seal head to install Screw 2 is fixed.Elastic "O"-ring 12 is used to seal and stretch out outer steel cylinder 11 between the going to the bottom of underdrive bar 10 and outer steel cylinder 11 Go to the bottom to outer steel cylinder.Elastic "O"-ring 12 both can play sealing function, can fix clamped transmission as soft connection again Bar 10.The correcting parts 13 of underdrive bar 10 lower end play the effect of correcting, installation of conveniently going into the well.
Above-mentioned boring vertical line strain measuring instrument after being lifted into boring, use special cement pour coupling, due under pass Lever 10 and outer steel cylinder 11 use elastic "O"-ring 12 to fix, and for soft connection, therefore the deformation of steel cylinder 11 will not be transmitted to answer Change sensor 1 (strain measurement unit), boring deformation can be delivered to strain biography along the direction of underdrive bar 10 by coupling cement On sensor 8, reach to measure the purpose of vertical line strain.
Obviously, those of ordinary skill in the art is it should be appreciated that above embodiment is intended merely to explanation originally Utility model, and be not used as to restriction of the present utility model, as long as in spirit of the present utility model, to The upper change of described embodiment, modification all will fall in Claims scope of the present utility model.

Claims (7)

1. the vertical line strain measuring instrument of boring, measures for the crust deformation of institute installation region is carried out vertical line strain, It is characterized in that, including:
Sensing unit, vertical line strain in its sensing boring;And
Outer steel cylinder (11), described sensing unit is contained in outer steel cylinder (11) and supports described sensing unit by it,
Wherein, described sensing unit include strain transducer (8), equivalent elastic modulus matching can (7), upper drive link (6) and Underdrive bar (10), described strain transducer (8) is installed in described equivalent elastic modulus matching can (7), described upper transmission Described sensing unit is fixed in described outer steel cylinder (11) by bar (6) and underdrive bar (10),
Described underdrive bar (10) extends vertically out going to the bottom of described outer steel cylinder (11), described underdrive bar (10) and described outer steel For soft connection between cylinder the going to the bottom of (11).
Boring the most according to claim 1 vertical line strain measuring instrument, it is characterised in that going to the bottom of described outer steel cylinder (11) On be provided with elastic "O"-ring, described underdrive bar (10) stretches out described outer steel cylinder (11) by described elasticity "O"-ring (12) Go to the bottom.
Boring the most according to claim 1 vertical line strain measuring instrument, it is characterised in that upper described outer steel cylinder (11) Screw (2) is installed by seal head by portion, seal head "O"-ring (3) and seal head (1) are fixed and be connected, and described seal head (1) has Line outlet (4).
Boring the most according to claim 1 vertical line strain measuring instrument, it is characterised in that farther include sensor support Frame (5), described sensor stand (5) is fixing with described seal head (1) to be connected, and described upper drive link (6) is propped up with described sensor Frame (5) is fixing to be connected with fixing described sensing unit.
Boring the most according to claim 1 vertical line strain measuring instrument, it is characterised in that described equivalent elastic modulus mates Shell (7) is annular outer cover.
Boring the most according to claim 1 vertical line strain measuring instrument, it is characterised in that stretching of described underdrive bar (4) The one end going out described outer steel cylinder (11) has correcting parts.
Boring the most according to claim 1 vertical line strain measuring instrument, it is characterised in that described upper drive link (6) and under The outer wall of drive link (10) has screw thread, and the top and bottom of described strain transducer (8) are respectively provided with screwed hole, described in upload Lever (6), should by screw-threaded engagement through the screwed hole of upper end and described underdrive bar (10) through the screwed hole of lower end Become sensor (8) and equivalent elastic modulus matching can (7) is fixedly supported in described outer steel cylinder (11).
CN201620583626.4U 2016-06-15 2016-06-15 Hole vertical line strain measuring instrument Withdrawn - After Issue CN205785163U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620583626.4U CN205785163U (en) 2016-06-15 2016-06-15 Hole vertical line strain measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620583626.4U CN205785163U (en) 2016-06-15 2016-06-15 Hole vertical line strain measuring instrument

Publications (1)

Publication Number Publication Date
CN205785163U true CN205785163U (en) 2016-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620583626.4U Withdrawn - After Issue CN205785163U (en) 2016-06-15 2016-06-15 Hole vertical line strain measuring instrument

Country Status (1)

Country Link
CN (1) CN205785163U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105928488A (en) * 2016-06-15 2016-09-07 中国地震局地壳应力研究所 Borehole vertical line strain gauge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105928488A (en) * 2016-06-15 2016-09-07 中国地震局地壳应力研究所 Borehole vertical line strain gauge
CN105928488B (en) * 2016-06-15 2019-01-01 中国地震局地壳应力研究所 Drill vertical line strain measuring instrument

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C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20161207

Effective date of abandoning: 20190101

AV01 Patent right actively abandoned