CN2725847Y - Big displacement quantity direct-reading multi-point displacement-meter - Google Patents
Big displacement quantity direct-reading multi-point displacement-meter Download PDFInfo
- Publication number
- CN2725847Y CN2725847Y CN 200420070376 CN200420070376U CN2725847Y CN 2725847 Y CN2725847 Y CN 2725847Y CN 200420070376 CN200420070376 CN 200420070376 CN 200420070376 U CN200420070376 U CN 200420070376U CN 2725847 Y CN2725847 Y CN 2725847Y
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- chi
- box
- measuring tape
- fixed
- measuring
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model belongs to a measurement unit of periphery displacement of wall rock for underground engineering, in particular to a big displacement quantity direct-reading multi-point displacement-meter which is adequate for larger peripheries and different depth intervals of boreholes, chambers or tunnels dug in loose wall rocks. The utility model mainly comprises a measuring tape fairlead 8, a measuring tape connecting line 7, a base 10 for a measurement base point and a fixed pawl 12 for the measurement base point. One end of the measuring tape fairlead 8 is fixed with a housing cover 6 for a measurement box, and the center of the housing cover 6 is fixed with a fixing plate 1 for a measuring tape box. The both sides of the fixing plate for a measuring tape box are symmetrically fixed with four small shafts 5, on which four measuring rule boxes are moveably arranged. A flexible measuring tape 3 with scales is moveably loaded in a measuring tape box 4, and by the guiding of a guide post 13, one end of the flexible measuring tape 3 is fixed on a measuring tape adapter 15. The guide post 13 is fixed on the fixing plate 1 for a measuring tape box. The housing cover 6 is tightly fitted in a housing base 2 of the measurement box, simplifying an aperture measuring apparatus, facilitating off-scale reading and improving the reading accuracy.
Description
Technical field
The surveying instrument of engineering peripheral rock displacement under the utility model possession, the big displacement quantity direct-reading multipoint displacement meter that big periphery in particularly a kind of pit shaft that is adapted at digging in the loose and soft surrounding rock, chamber or tunnel and different depth scope are used.
Technical background
At present, measure the displacement of underground works peripheral rock, all adopt the borehole survey technology, promptly boring is measured in one of construction on the country rock that will measure, install the measurement basic point at the boring different depth,, measure different depth measuring point and hole basic point variable in distance value when underground engineering peripheral rock produces distortion, by calculating, draw the displacement of different depth country rock.It is different with the connected mode or the measuring principle of surveying instrument to look basic point, is divided into mechanical attachment mode, induction and resistance-strain type; Mechanical attachment formula measuring method is divided formula and the indrect reading formula directly read, electromagnetic induction and resistance strain measurement mode are the indrect reading formula, mechanical attachment formula multipoint displacement meter adopts web member that each measurement basic point is connected with the aperture measurement mechanism, the aperture measurement mechanism mostly is straight-bar or the straight tube that band is measured scale, and protruded length is the maximum displacement of being observed.This quasi-instrument exists the maximum displacement of being observed and limit by observation device reservation protruded length, mostly is in the 200mm; In addition, protection of instrumentation device in aperture is also complicated with the protruded length increase.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, provides a kind of measurement upper limit that location is moved to bring up to 2m; Simplify the aperture measurement mechanism and dwindled volume; The reading window that has multiplying arrangement on the measuring box will be surveyed the chi scale and show amplification, improve the big displacement quantity direct-reading multipoint displacement meter of reading accuracy.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of mainly by surveying the chi fairlead, survey the chi connecting line, measure the big displacement quantity direct-reading multipoint displacement meter that basic point seat and basic point fixed pawl are formed, be characterized in fixing a measuring box casing cover at survey chi fairlead one end, survey chi box fixed head one of casing cover center fixed, fix four little axles with surveying chi box fixed head symmetria bilateralis, on little axle, adorn four versatilely and survey the chi box, survey the flexibility that the band scale is housed in the chi box versatilely and survey chi, the flexible chi of surveying leads through guidepost, one end is fixed with surveying the chi connector, and guidepost is fixed on to be surveyed on the chi box fixed head, and the casing cover wringing fit is inserted in the outer shell base; The flexible chi of surveying is stored in the survey chi box curlingly, and read text scale is located at the chi outside; The one side that the measuring box outer shell base is relative with surveying the chi fairlead is established four windows and four magnifieres fixedly is housed.
The beneficial effects of the utility model are: replace shaft-like or tubulose is directly surveyed chi and the location shift measurement upper limit can be brought up to 2m with the flexible chi of surveying; Survey chis with four and be installed in the box, simplified aperture measurement mechanism and reduced volume greatly, the window on the measuring box outer shell base is equipped with magnifier, surveys the chi scale and shows and amplify, and makes things convenient for reading and improves reading accuracy.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 shows big displacement quantity direct-reading multipoint displacement meter structure and measuring point installation sectional front view.
The upward view of Fig. 2 diagrammatic sketch 1.
The A-A sectional view of Fig. 3 diagrammatic sketch 1.
Among the figure, 1-surveys chi box fixed head; 2-measuring box outer shell base; The flexible chi of surveying of 3-; 4-surveys the chi box; The little axle of 5-; The 6-casing cover; 7-surveys the chi connecting line; 8-surveys the chi fairlead; 9-installs coupling sleeve; 10-measures the basic point seat; 11-measures boring; 12-basic point fixed pawl; 13-surveys the chi guidepost; The 14-reading glass; 15-surveys the chi connector;
Embodiment
With reference to accompanying drawing, this big displacement quantity direct-reading multipoint displacement meter, mainly by surveying chi fairlead 8, survey chi connecting line 7, measure basic point seat 10 and basic point fixed pawl 12 compositions, be characterized in fixing a measuring box casing cover 6 in survey chi fairlead 8 lower ends, one of casing cover 6 center fixed are surveyed chi box fixed head 1, adorn four little axles 5 with surveying chi box fixed head 1 symmetria bilateralis, activity is equipped with and is surveyed chi box 4 on little axle 5, surveys and adorns the flexibility survey chi 3 that has scale in the chi box 4 versatilely, and the flexible chi 3 of surveying is through surveying the guiding of chi guidepost 13, one end is fixed with surveying chi connector 15, and guidepost 13 is fixed on to be surveyed on the chi box fixed head 1; The effect of surveying chi guidepost 13 is when guaranteeing that survey chi 3 stretches out from surveying chi box 4, to be subjected to connecting line 7 pullings to be adjacent to reading glass 14 all the time; The flexible chi 3 of surveying is stored in the survey chi box 4 curlingly, and read text scale is located at the chi outside; Measuring box outer shell base 2 is provided with four windows and four magnifieres 14 fixedly is housed with the relative one side of survey chi fairlead; Surveying chi jointing 15 for four fixedlys connected with four survey chi connecting lines 7 respectively, four other ends of surveying chi connecting line 7, fixedly be connected on respectively again on the measurement basic point seat 10 of four different depths, measure two basic point fixed pawls 12 that are fixed with right-angled intersection on the basic point seat 10, basic point fixed pawl 12 will be measured basic point seat 10 and be fixed on the wall of measuring boring 11.
The measuring method of this device is, at first four measuring basic point seat 10 delivered to measure the different depth that will survey in the boring 11 and be fixed on and measured on boring 11 walls, will survey chi fairlead 8 again and put into the measurements 11 mouthfuls of ends of holing and be fixed in the joint sleeve 9 on the wall.When underground engineering periphery different depth country rock produces when mobile, with degree of depth difference, its amount of movement is different, and the variable in distance of each basic point and aperture reflects in the boring 11 by measuring.Therefore, when measuring basic point and change with orifice distance, measure connecting line 7 and must spur the flexible chi 3 of surveying and pull out same length from survey chi box 4, the variation of length can clearly be read from reading glass 14, can measure the strata displacement amount of different measuring points.
Claims (3)
1, a kind of big displacement quantity direct-reading multipoint displacement meter, mainly by surveying chi fairlead (8), survey chi connecting line (7), measuring basic point seat (10) and basic point fixed pawl parts such as (12) forms, be characterized in fixing a measuring box casing cover (6) at survey chi fairlead (8) one ends, survey chi box fixed head (1) one of casing cover (6) center fixed, fix four little axles (5) with surveying chi box fixed head symmetria bilateralis, on little axle (5), adorn four measuring chi box versatilely, survey the flexibility that the band scale is housed in the chi box (4) versatilely and survey chi (3), the flexible chi (3) of surveying leads through guidepost (13), one end is fixing with survey chi connector (15), guidepost (13) is fixed on to be surveyed on the chi box fixed head (1), and casing cover (6) wringing fit is inserted in the measuring box outer shell base (2).
2, big displacement quantity direct-reading multipoint displacement meter according to claim 1 is characterized in that the flexible chi (3) of surveying is stored in the survey chi box (4) curlingly, and read text scale is located at the chi outside.
3, big displacement quantity direct-reading multipoint displacement meter according to claim 1, its feature is established four windows and four magnifieres (14) fixedly is housed in measuring box outer shell base (2) one side relative with surveying chi fairlead (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070376 CN2725847Y (en) | 2004-08-18 | 2004-08-18 | Big displacement quantity direct-reading multi-point displacement-meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070376 CN2725847Y (en) | 2004-08-18 | 2004-08-18 | Big displacement quantity direct-reading multi-point displacement-meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2725847Y true CN2725847Y (en) | 2005-09-14 |
Family
ID=35040563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070376 Expired - Fee Related CN2725847Y (en) | 2004-08-18 | 2004-08-18 | Big displacement quantity direct-reading multi-point displacement-meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2725847Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342205C (en) * | 2005-12-22 | 2007-10-10 | 中国科学院力学研究所 | Method for measuring sliding surface position and slippage of landslip and its device |
| CN103047951A (en) * | 2013-01-22 | 2013-04-17 | 广东宏大爆破股份有限公司 | Method and device for installing multipoint extensometer for detecting displacement at deep part of surrounding rock |
-
2004
- 2004-08-18 CN CN 200420070376 patent/CN2725847Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342205C (en) * | 2005-12-22 | 2007-10-10 | 中国科学院力学研究所 | Method for measuring sliding surface position and slippage of landslip and its device |
| CN103047951A (en) * | 2013-01-22 | 2013-04-17 | 广东宏大爆破股份有限公司 | Method and device for installing multipoint extensometer for detecting displacement at deep part of surrounding rock |
| CN103047951B (en) * | 2013-01-22 | 2015-04-01 | 宏大矿业有限公司 | Method for installing multipoint extensometer for detecting displacement at deep part of surrounding rock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |