CN201327475Y

CN201327475Y - Crack observing microscope of building/structure

Info

Publication number: CN201327475Y
Application number: CNU2008202049633U
Authority: CN
Inventors: 郭建伟; 周远文
Original assignee: Guangzhou Design Institute
Current assignee: Guangzhou Design Institute
Priority date: 2008-12-10
Filing date: 2008-12-10
Publication date: 2009-10-14
Anticipated expiration: 2018-12-10

Abstract

The utility model discloses a crack observing microscope of a building/structure, comprising a lens barrel base, an objective lens, an eye lens, a reticle, a reticle seat, a sliding plate, a sliding plate groove and a reading drum; the objective lens is arranged on the lens barrel base; the eye lens is position above the objective lens; the sliding plate groove is positioned between the objective lens and the eye lens; the reticle, the reticle seat and the sliding plate are arranged in the sliding plate groove; the reading drum wheel essentially comprises a rotating wheel, a reading indicating sleeve and a micrometer screw rod; and the rotating wheel is connected to the sliding plate by the micrometer screw rod. The crack observing microscope adopts non-contact measurement, has high measurement precision and can meet the requirement of measuring the width of thinner cracks.

Description

A kind of buildings/structures crackle microscope for observing

Technical field

The utility model relates to a kind of deformation measurement instrument, relates in particular to a kind of instrument that the crackle of buildings/structures is observed.

Background technology

In the deformation measurement of buildings or structures, usually relate to crackle observation.Crackle observation is that the trend, length, width to crackle on buildings or the structures etc. measured, to understand its present situation and situation of change.Carry out crackle when observation, should set up observation monument being observed the crackle two ends, observation monument should have can be for distinct end face or the center measured.If long-term observation can be adopted metal flag, Metallic rod sign or the clapboard sign inlaying or imbed metope; If short-term observation, can adopt paint parallel lines sign or with the sheet metal sign of building glue.When needs measure crackle in length and breadth to changing value the time, can adopt grid square web plate sign.

At present, in the crackle observation of prior art to buildings or structures, owing to generally only require the development and change situation of measuring crackle, fine measuring instruments such as the vernier caliper of employing electronical reading, micrometer caliper get final product usually.Yet, measure the developed width of crackle if desired, during especially than the developed width of hair check, adopt traditional instrument such as vernier caliper that its limitation is just arranged.Because vernier caliper is when carrying out MEASUREMENT OF CRACK WIDTH,, just must interior measuring claw be put in the tested crackle as obtaining comparatively accurate data.So just require tested crackle enough big, and the crackle both ends of the surface must be level and smooth, be not easy tested measuring jaw and touch down and cause the measurement data distortion.But, in actual engineering, for some thinner crackles, the interior measuring claw of vernier caliper can't put in the tested crackle at all, perhaps the measurement face of tested crackle is comparatively fragile, is touched down easily, therefore utilizes the traditional instrument of prior art to be difficult to satisfy this type of Testing requirement.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of buildings contactless, that measuring accuracy is high/structures crackle microscope for observing that adopts is provided, to satisfy carrying out Testing requirement than the hair check width.

The purpose of this utility model is achieved by the following technical programs:

A kind of buildings that the utility model provides/structures crackle microscope for observing comprises lens barrel base, object lens, eyepiece, graticule, graduation panel seat, slide plate, skateboards slot and reading drum; Described object lens are arranged on the lens barrel base, and eyepiece is positioned at the top of object lens; Described skateboards slot is between object lens and eyepiece, and described graticule, graduation panel seat and slide plate are arranged in the skateboards slot; Described reading drum mainly is made up of spinning roller, reading indication cover, micrometer screw mandrel, and described spinning roller is connected on the slide plate by the micrometer screw mandrel.

Adopt the utility model, when crackle can be arranged observation station at the crackle two ends more in short-term; When crack length is longer, then arrange an observation station every 20～30cm on request.In addition, at each observation station place, draw survey line or other sign with fine rule together by the direction ejection of vertical crack, to guarantee the position consistency of each observation.Principle of work of the present utility model is as follows: when measuring, with the horizontal cross shaft on the reading microscope graticule with done draw survey line or the sign overlap, simultaneously rotate reading microscope a little, make vertical long filament aim at one side of tested crackle, obtain first reading.Then, turn reading drum again, the another side that makes vertical long filament and crackle is tangent and obtain another reading.This two readings poor then is the width of this crackle.

The present invention has following beneficial effect:

(1) is contactless to the measurement of measuring thing, therefore need not to put in the tested crackle and just can implement to measure to the thinner crackle of width easily.Simultaneously, do not need fully to contact measured object, thereby avoided measuring the abrasion of face or touching down the measurement result distortion that is caused.

(2) measuring accuracy is higher, and the least count of microdrum is 0.005 millimeter, because therefore crackle width poor for twice reading reading can eliminate the influence of instrument error to measurement.

Description of drawings

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail:

Fig. 1 is the structural representation of the utility model embodiment.

Among the figure: lens barrel base 1, object lens 2, eyepiece 3, graticule 4, graduation panel seat 5, slide plate 6, skateboards slot 7, lens barrel lock screw 8, spinning roller 9, reading indication cover 10, micrometer screw mandrel 11, spinning roller cover 12, reading cover 13, the reading cover ends tight screw 14

Embodiment

Figure 1 shows that embodiment of the present utility model, comprise lens barrel base 1, object lens 2, eyepiece 3, graticule 4, graduation panel seat 5, slide plate 6, skateboards slot 7 and reading drum.

Object lens 2 are arranged on the lens barrel base 1, and its side is provided with lens barrel lock screw 8.Eyepiece 3 is positioned at the top of object lens 2.Skateboards slot 7 is between object lens 2 and eyepiece 3, and graticule 4, graduation panel seat 5 and slide plate 6 are arranged in the skateboards slot 7.The reading drum mainly is made up of spinning roller 9, reading indication cover 10, micrometer screw mandrel 11, and spinning roller 9 is connected on the slide plate 6 by micrometer screw mandrel 11.The spinning roller 9 outer spinning roller covers 12 that are provided with are provided with reading cover 13 outside the reading indication cover 10 and the reading cover ends tight screw 14.

Its each parameter index is as follows:

1, microdrum least count value: 0.005mm

2, measurement range: 0-4mm

3, field range: 6mm

4, instrument enlargement factor: 20X

5, eyepiece enlargement factor: 10X

6, object lens magnification: 2X

7, graticule scale value: 1mm

8, graticule meter full scale: 8mm

Object of observation: be generally the thinner crackle of width, concrete width is decided on the ranging of different reading microscopes.

Observation procedure is as follows:

1) when crackle more in short-term, can arrange observation station at the crackle two ends, when crack length is longer, then arrange an observation station every 20～30cm on request;

2), draw survey line together or carry out other sign by the direction ejection of vertical crack with fine rule, to guarantee the position consistency of each observation at each observation station place;

3) when measuring, horizontal cross shaft on the reading microscope graticule is overlapped with this measuring lead wire or mark, rotate simultaneously reading microscope a little, make vertical long filament aim at one side of tested crackle, obtain first reading, and then turn reading drum, make the another side of vertical long filament and crackle tangent, another reading of getting back, this two readings poor then is the width of this crackle.

In use should be noted that:

1), before observation, drum groove zero-bit should be aimed at the division of the graticule zero-bit, should not proofread and correct on time.Bearing calibration is as follows: three reading covers that loosen earlier on the spinning roller cover 12 end tight screw 14, and turn reading cover 13 then, make that zero groove overlaps with the reading index line it on, screw three readings at last and end tight screw 14, and it is good to be correction.

2), in observation process, avoid the appearance of idle running difference, mobile reading microscope, make it aim at twice reading of same target from left and right sides both direction, as if should be identical, but in fact can not contact closely fully with swivel nut owing to screw rod, their contact condition also will change when the helical rotation direction changes, and twice reading is with difference, and consequent measuring error is called idle running error.For fear of idle running error, when using reading microscope, should move reading microscope along same direction, make vertical hair aim at each target.

Claims

1, a kind of buildings/structures crackle microscope for observing is characterized in that: comprise lens barrel base (1), object lens (2), eyepiece (3), graticule (4), graduation panel seat (5), slide plate (6), skateboards slot (7) and reading drum; Described object lens (2) are arranged on the lens barrel base (1), and eyepiece (3) is positioned at the top of object lens (2); Described skateboards slot (7) is positioned between object lens (2) and the eyepiece (3), and described graticule (4), graduation panel seat (5) and slide plate (6) are arranged in the skateboards slot (7); Described reading drum mainly is made up of spinning roller (9), reading indication cover (10), micrometer screw mandrel (11), and described spinning roller (9) is connected on the slide plate (6) by micrometer screw mandrel (11).