CN207036586U - A kind of reisilometer detects auxiliary stand with multiple spot - Google Patents

A kind of reisilometer detects auxiliary stand with multiple spot Download PDF

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Publication number
CN207036586U
CN207036586U CN201720414878.9U CN201720414878U CN207036586U CN 207036586 U CN207036586 U CN 207036586U CN 201720414878 U CN201720414878 U CN 201720414878U CN 207036586 U CN207036586 U CN 207036586U
Authority
CN
China
Prior art keywords
locating rod
locating
rod
housing
reisilometer
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.)
Expired - Fee Related
Application number
CN201720414878.9U
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Chinese (zh)
Inventor
陈永祥
毕忠贤
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Nanjing Yangzi Petrochemical Design and Engineering Co Ltd
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Nanjing Yangzi Petrochemical Design and Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by Nanjing Yangzi Petrochemical Design and Engineering Co Ltd filed Critical Nanjing Yangzi Petrochemical Design and Engineering Co Ltd
Priority to CN201720414878.9U priority Critical patent/CN207036586U/en
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Publication of CN207036586U publication Critical patent/CN207036586U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of reisilometer auxiliary stand is detected with multiple spot, including with four frames while square frame, be slidably connected at two parallel frames of housing while four first locating rods, be slidably connected at least second locating rod on housing another two parallel frame side, the connected side of first locating rod is vertically arranged, second locating rod is vertically arranged with the first locating rod, and the length on every frame side is all higher than or equal to 20 centimetre;First locating rod in the second locating rod with being equipped with keeper;Locating piece is slidably connected in every first locating rod, has one piece of locating piece to be slidably connected with the second locating rod in every first locating rod;Penetrate locating piece and be provided with the mounting hole coordinated with reisilometer, the axis of mounting hole is perpendicular to plane where housing, position with the locating piece for positioning reisilometer is adjustable, it once can determine that the position of four locating pieces, the advantages of one auxiliary stand is the tested surface for being applicable to all specifications, and the positioning of reisilometer facilitates.

Description

A kind of reisilometer detects auxiliary stand with multiple spot
Technical field
Concrete NDT assistive device field is the utility model is related to, more particularly to a kind of reisilometer is detected with multiple spot and aided in Support.
Background technology
Rebound method is by elastic stem attack concrete surface with a spring driven weight, and measures weight and is repelled back The distance come, using rebound value as the index related to intensity, to estimate a kind of method of concrete strength.
Need to set in detection process and survey area, when setting survey area, the detection zone of each structure or component typically should be many In 10, but it is less than 0.3m component less than 4.5m and other direction size for a direction size, it is surveyed area's quantity and can fitted Work as reduction, but 5 should not be less than.Two it is adjacent survey sections away from should within 2m, survey area from after component ends construction joint edge away from From not preferably greater than 0.5m, and be not easy to be less than 0.2m.The area in general Ge Ce areas is less than or equal to 0.04 ㎡, and a Ge Ce areas quilt It is divided into 16 measuring points, the clear distance between each two measuring point is not preferably less than 20mm.
The Chinese patent that Authorization Notice No. is CN202649064U, authorized announcement date is on 01 02nd, 2013 discloses one Kind of concrete intensity with rebound method template used for testing, its surface are provided with multiple instrument connections, instrument connection be no less than 16 and For 16 integral multiple.Every 16 instrument connections are a Ge Ce areas and each survey area is not more than 0.04 ㎡.Prior art is using When, the selection suitable template of size behind survey area, the survey that template alignment is finished in advance are finished in the region for being first depending on needing to detect Area, reisilometer is inserted into instrument connection and can be tested in the case where ensureing that reisilometer is vertical with tested region.
Be in place of the deficiencies in the prior art, the distance between instrument connection in prior art template in template construct just It has been determined that then user needs the template for preparing a set of all size standby before detection, when template is needed to use, then root The template of corresponding size is taken according to actual conditions so that testing cost greatly improves.
Utility model content
The purpose of this utility model is to provide a kind of reisilometer multiple spot detection auxiliary stand, which solves in the prior art Concrete intensity with rebound method template used for testing specification is constant, in order to which the tested surface for being applicable different needs to prepare a whole set of The template of different size so that the problem of testing cost improves, the position with the locating piece for being used to position reisilometer is adjustable, and The position of four locating pieces is once can determine that, a reisilometer multiple spot detection auxiliary stand is the quilt for being applicable to all specifications Survey face, and reisilometer positioning it is convenient, fast the advantages of.
Above-mentioned technical purpose of the present utility model technical scheme is that:
A kind of reisilometer detects auxiliary stand with multiple spot, including the square housing with four frame sides, is slidably connected at Two parallel frames of housing while four first locating rods, be slidably connected at housing another two parallel frame while at least one second it is fixed Position bar, the connected side of the first locating rod are vertically arranged, and the second locating rod is vertically arranged with the first locating rod, housing The length on every frame side be all higher than or equal to 20 centimetres;First locating rod or the second locating rod on frame side when sliding, and first The axis and frame of locating rod in the axis and frame of, the second locating rod between remain plumbness;First locating rod and the The keeper for the first locating rod or the second locating rod to be positioned is equipped with two locating rods;It is sliding in every first locating rod It is dynamic to be connected with locating piece, there is one piece of locating piece to be slidably connected with the second locating rod in every first locating rod, locating piece Also can be along the axial movement of the second locating rod along the axial movement of the first locating rod;Penetrate locating piece and be provided with and match somebody with somebody with reisilometer The mounting hole of conjunction, the axis of mounting hole vertically with plane where housing.
Using said structure, relative slip, and the first locating rod can occur with housing for the first locating rod, the second locating rod Same locating piece is respectively connected with the second locating rod so that fixed when with the second locating rod relative displacement occurs for the first locating rod Position block is i.e. as the first locating rod or the second locating rod are subjected to displacement.When the first locating rod is motionless, mobile second locating rod is It may be such that locating piece along the first locating rod as the second locating rod is moved.When second locating rod is motionless, mobile first locating rod, It may be such that locating piece along the second locating rod as the first locating rod is moved.Surrounded so that locating piece may alternatively appear in housing Plane in any position.Four sides of housing are all higher than 20 centimetres, and will using the area that area is each surveyed during determination of resilience Ask less than or equal to 0.04 square metre so that locating piece may alternatively appear in any position that arbitrary dimension surveys area.It is fixed using four first Position bar so that when the first locating rod positions with the second locating rod, can at least determine the position of four locating pieces, i.e. Primary regulation Four measuring points can at least be determined so that the position that user at most needs to adjust four the second locating rods may be such that and determine All 16 measuring points of measurement region.So that the determination of measuring point is more quickly, conveniently.Reduce the locating rod of regulation second of user Number of operations.
More preferably:The first all locating rods is set on perpendicular frame side, all second positioning Bar is set on perpendicular frame side;First locating rod and the second locating rod stagger setting.
Using said structure, the first all locating rods is slidably connected at housing with the second locating rod using the mode being arranged On so that for the first locating rod with the second locating rod when outer upper slide of frame is dynamic, the first locating rod is more steady in itself with the second locating rod It is fixed so that when the first locating rod is slided with the second locating rod, the first locating rod or the angle on the second locating rod and frame side are not easy to send out Raw big change.First locating rod and the second locating rod stagger setting so that the first locating rod is with the second locating rod to mutual Motion influences small.
More preferably:Keeper is to penetrate the junction of the first locating rod or the second locating rod and frame side and with first The bolt that locating rod screw thread coordinates, bolt and housing tight against when, the first locating rod or the second locating rod are positioned.
Using said structure, positioned using bolt for the first locating rod and the second locating rod so that the first positioning Bar is convenient and swift when being positioned with the second locating rod, it is only necessary to rotational positioning bolt cause bolt and housing tight against.And spiral shell Line, which coordinates, causes being completely embedded between bolt and the first locating rod, bolt and the second locating rod so that positioning spiral shell The position-limiting action of bolt is strong.
More preferably:It is fixed with the first locating rod or second to be equipped with all the first locating rods or the second locating rod Parallel the first leveling bubble of position rod axis, be additionally provided with all the first locating rod or the second locating rod with the first locating rod or The second vertical leveling bubble of second positioning rod axis.
The use of the first leveling bubble is observable first during the frame side level parallel with the first locating rod using said structure Whether locating rod is in horizontality, can be adjusted the first locating rod to level according to the first leveling bubble, now observes the The second leveling bubble in two locating rods may know that whether the second locating rod is vertical, fixed according to the second leveling bubble regulation second Position bar causes the second leveling bubble to balance, and now the second locating rod is vertical.When the frame side parallel with the first locating rod is vertical, The first locating rod is adjusted according to the second leveling bubble being connected with the first locating rod, is adjusted according to first be connected with the second locating rod Par bubble the second locating rod of regulation, you can so that the first locating rod is vertical, the second locating rod is horizontal.Facilitate user's observation the Whether horizontally or vertically a positioning rod and the second locating rod, and make corresponding regulation measure.
More preferably:Locating piece and the junction of the first locating rod or the second locating rod are equipped with spin groove, spin Groove is set around the first locating rod or the second locating rod, provided with multiple roller balls with the dynamic connection of spin trough roller, rolling in spin groove Dynamic ball can not leave spin groove, and roller ball abuts setting with the first locating rod, roller ball with the second locating rod;Roller ball is by Gap filling between gap, the second locating rod and locating piece between a positioning rod and locating piece.
Using said structure, locating piece and the first locating rod or the junction of locating piece and the second locating rod are provided with spin Groove, spin groove is interior to be provided with roller ball, and the gap between the first locating rod and the second locating rod is filled with using spin.And roll Force of sliding friction between locating piece and the first locating rod, locating piece and the second locating rod is converted into stiction by ball in itself. So that the slip between locating piece and the first locating rod, locating piece and the second locating rod is more smooth.
More preferably:It is equipped with four frame sides of housing and scribbles graduated scale layer.
Using said structure, the setting convenient use person of scale layer observes the distance between two neighboring first locating rod, Convenient use person determines whether the distance between each two adjacent positioned bar is equal.Reduce because positioning distance between tie rods may cause Error.
More preferably:At least provided with four mounting rods vertical with plane where housing, installation at the corner of housing The one end of bar away from housing is provided with installing plate, and plane where installing plate is vertically with installing rod axis.
Using said structure, the installing plate and mounting blocks that are provided with housing corner so that user supports installing plate completely It is connected in plane to be measured and may be such that housing is vertical with plane to be measured, and the axis of locating piece is vertical with plane where housing, then Reisilometer axis on locating piece is vertical with plane to be measured.Facilitate the position that user adjusts housing so that housing Being easy to can be vertical with plane to be measured.
In summary, the utility model has the advantages that:Using housing and be slidably connected on housing first Locating rod, the second locating rod being slidably connected on housing are as auxiliary stand, and in the first locating rod and the second locating rod Locating piece is slidably connected, reisilometer, which is plugged on the mounting hole on locating piece Nei, may be such that reisilometer positions.Use two bars Movement realize the movement of locating piece optional position in a horizontal plane, and there are four the first locating rods so that one After secondary regulation, you can at least determine the position of four locating pieces, user only needs at most four the second locating rods of regulation to incite somebody to action All 16 measuring points in one Ge Ce areas determine completely.Facilitate the operation of reisilometer multiple spot detection auxiliary stand.Housing it is every Bar frame side is longer than or equal to 20 centimetre so that and the area that housing is surrounded necessarily is more than or waits one 0.04 square metres, and one The area for surveying area is less than or equal to 0.04 square metre, then the position for adjusting the first locating rod and the second locating rod may be such that positioning Block appears in arbitrary dimension and surveys position all in area.So that reisilometer multiple spot detection auxiliary stand be applied to it is all to be measured All sizes in face survey the measure in area.Using roller ball be filled with the first locating rod and locating piece, the second locating rod and locating piece it Between gap so that locating piece is more stable when mobile.And the setting of roller ball causes locating piece and the first locating rod, determined It is more smooth when position block is with the generation relative displacement of the second locating rod, easily facilitate the motion of locating piece.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of embodiment;
Fig. 2 is the positive structure diagram of embodiment;
Fig. 3 is Fig. 2 A-A portions structural representation;
Fig. 4 is Fig. 2 B-B portions structural representation;
Fig. 5 is Fig. 4 A portions structure enlargement diagram.
In figure, 1, housing;1001st, frame side;2nd, the first locating rod;3rd, the second locating rod;4th, locating piece;5th, mounting hole;6、 Bolt;7th, the first leveling bubble;8th, the second leveling bubble;9th, spin groove;10th, roller ball;11st, scale layer;12nd, install Bar;13rd, installing plate;14th, reisilometer.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but As long as all protected in the scope of protection of the utility model by Patent Law.
Embodiment:A kind of reisilometer detects auxiliary stand with multiple spot, as shown in Figure 1, Figure 3, including provided with four frame sides 1001 square housing 1, the framed length of side 1001 of institute of housing 1 is 20 centimetres, and is scribbled on all frame sides 1001 Have by centimetre in units of scale scale layer 11.A mounting rod 12 vertical with housing 1 is respectively provided with the corner of housing 1, The one end of mounting rod 12 away from housing 1 is provided with installing plate 13, and the place plane of installing plate 13 is perpendicular to the place axis of mounting rod 12.
Reference picture 2, four piece first locating rods 2 parallel with 1 two frame sides of housing are provided with the space that housing 1 surrounds, A positioning rod 2 is set on the frame side 1001 vertical with the first locating rod 2, and the first locating rod 2 and the junction on frame side 1001 are worn Saturating first locating rod 2 is provided with bolt 6, and the screw thread of 6 and first locating rod of bolt 2 coordinates.Bolt 6 is fixed through first For position bar 2 tight against when on frame side 1001, it is spacing that the first locating rod 2 is positioned bolt 6.Is additionally provided with the space that housing 1 surrounds The second vertical locating rod 3 of a positioning rod 2, the second locating rod 3 are set on the frame side 1001 vertical with the second locating rod 3, and The junction on the second locating rod 3 and frame side 1001 penetrates the second locating rod 3 and also is provided with bolt 6.Penetrate the second locating rod 3 Bolt and the screw thread of the second locating rod 3 coordinate, and penetrate the bolt 6 of the second locating rod 3 tight against when on frame side 1001, the It is spacing that two locating rods 3 are positioned bolt 6.First locating rod 2 and the stagger setting of the second locating rod 3, and the first all locating rods 2 It is respectively positioned on the side of the second locating rod 3.Bolt 6 is keeper.
Reference picture 2, is equipped with all the first locating rod 2 or the second locating rod 3 and the first locating rod 2 or the second positioning First leveling bubble 7 of the diameter parallel of bar 3(Reference picture 1), be additionally provided with all the first locating rods 2 or the second locating rod 3 with The the second leveling bubble 8 of first locating rod 2 or the axis of the second locating rod 3 vertically.
Reference picture 1, Fig. 4, Fig. 5, a locating piece 4,4 sets of locating piece are slidably connected in the first all locating rods 2 Be located in the second locating rod 3, and all locating pieces 4 are also set in the second locating rod 3, the locating rod 2 of locating piece 4 and first or The junction of second locating rod 3 is provided with spin groove 9, and spin groove 9 is set around the first locating rod 2 or the second locating rod 3.Spin groove Multiple roller balls 10 are provided with 9, roller ball 10 determines the gap between the locating rod 2 of locating piece 4 and first, locating piece 4 with second Gap filling between the bar 3 of position.Connection is rolled between roller ball 10 and spin groove 9.Be provided through on locating piece 4 locating piece 4 with The mounting hole 5 that reisilometer 14 coordinates, the axis of mounting hole 5 are vertical with the place plane of housing 1 all the time.
The course of work:
In use, user uses mark stroke first according to needing measured region to be divided in detection zone Chu10Ge Ce areas(Not shown in figure), each area for surveying area is not more than 0.04 square metre, and each surveys the boundary of area's use level Line is divided into 16 blockages with vertical line of demarcation(Not shown in figure), the clear distance between each two blockage center be more than or Equal to 20 millimeters.
According to the survey area finished, the bolt 6 in all first locating rods is rotated so that bolt 6 leaves The frame side 1001 of housing 1, now i.e. removable first locating rod 2 so that the first locating rod 2 is along coupled frame side 1001 Motion so that the distance between two first adjacent locating rods 2 are equal to the distance between two adjacent horizontal dividing lines.Twist Tight bolt 6 so that bolt 6 positions with housing 1 tight against for the first locating rod 2.Now observation is on housing 1 Scale layer 11, determine whether the distance between two neighboring first locating rod 2 is identical.Adjust the position of housing 1 so that with first The parallel frame side 1001 of locating rod 2 is in horizontality, and whether the first leveling bubble 7 of the first locating rod 2 of observation is in balance State.If the first leveling bubble 7 is not poised state, unscrew the position that bolt 6 adjusts first locating rod 2, until the The first leveling bubble 7 on a positioning rod 2 is in poised state.
The corresponding survey area finished of housing 1 is placed so that housing 1 moves closer to the Ge Ce areas finished so that installing plate 13 are connected on region to be measured so that four installing plates 13 abut with region to be measured completely.Now the place plane of housing 1 i.e. with Plane to be measured is parallel.Now unscrew the bolt 6 being connected with the second locating rod 3, mobile second locating rod 3 so that second is fixed Position bar 3 is vertical with a vertical line of demarcation, and second leveling bubble 8 of the notice observation in the second locating rod 3 causes second to adjust After the balance of par bubble 8, the bolt 6 being connected with the second locating rod 3 is tightened up to bolt 6 is tight against on housing 1 so that Second locating rod 3 is positioned.Now complete the regulation for auxiliary stand.The now upper mounting hole 5 of four locating pieces 4 In on same vertical straight line.
Reisilometer 14 is inserted and in mounting hole 5, now the axis of reisilometer 14 is and tested surface(Not shown in figure)Vertically 's.Compression strength of the tested surface in the point can be measured using reisilometer 14.Reisilometer 14 is inserted in another mounting hole and surveyed The compression strength by side at the fixed mounting hole 5.Sequentially determining terminate four mounting holes 5 by after the compression strength of side.Twist The bolt 6 that pine is connected with the second locating rod 3, mobile second locating rod 3 so that the second locating rod 3 is divided vertically with another Boundary line overlaps, and now the second locating rod 3 causes the second leveling bubble 8 in the second locating rod 3 to balance for regulation, tightens and determines with second The bolt 6 that position bar 3 connects.Reisilometer 14 is continuing with to determine at four mounting holes 5 by the compression strength of side.Use this Kind method makes the second locating rod 3 be overlapped with four vertical lines of demarcation, and completes the measure tended to for a Ge Ce areas 16, it Remaining 9 Ge Ce areas are determined using same method afterwards, that is, complete the compressive strength determination for the plane.

Claims (7)

1. a kind of reisilometer detects auxiliary stand with multiple spot, it is characterised in that including square with four frame sides (1001) Housing (1), four first locating rods (2) for being slidably connected at described (1) two parallel frame side (1001) of housing, it is slidably connected at At least second locating rod (3) for housing (1) the another two parallel frame side (1001), first locating rod (2) with Its side connected is vertically arranged, and second locating rod (3) is vertically arranged with first locating rod (2), the housing (1) length of every frame side (1001) is all higher than or equal to 20 centimetres;First locating rod (2) or second locating rod (3) when being slided on the frame side (1001), the axis of first locating rod (2) and the frame side (1001), described second Plumbness is remained between the axis of locating rod (3) and the frame side (1001);First locating rod (2) and described the The keeper for first locating rod (2) or second locating rod (3) to be positioned is equipped with two locating rods (3);Often Locating piece (4) is slidably connected described in root in first locating rod (2), have on every first locating rod (2) one piece it is described fixed Position block (4) is slidably connected with second locating rod (3), and the locating piece (4) can be along the axle of first locating rod (2) Also can be along the axial movement of second locating rod (3) to motion;Penetrate the locating piece (4) and be provided with and match somebody with somebody with reisilometer (14) The mounting hole (5) of conjunction, the axis of the mounting hole (5) is perpendicular to plane where the housing (1).
2. a kind of reisilometer according to claim 1 detects auxiliary stand with multiple spot, it is characterised in that all described the A positioning rod (2) is set on the perpendicular frame side (1001), and all second locating rods (3) are set in On the perpendicular frame side (1001);First locating rod (2) and the second locating rod (3) stagger setting.
3. a kind of reisilometer according to claim 2 detects auxiliary stand with multiple spot, it is characterised in that the keeper is Penetrate the junction of first locating rod (2) or second locating rod (3) and the frame side (1001) and with described first The bolt (6) that locating rod (2) screw thread coordinates, the bolt (6) and the housing (1) tight against when, described first is fixed Position bar (2) or second locating rod (3) are positioned.
4. a kind of reisilometer according to claim 1 detects auxiliary stand with multiple spot, it is characterised in that all described the It is equipped with a positioning rod (2) or second locating rod (3) and first locating rod (2) or second locating rod (3) First leveling bubble (7) of diameter parallel, it is additionally provided with all first locating rods (2) or second locating rod (3) The second leveling bubble (8) vertical with first locating rod (2) or second locating rod (3) axis.
5. a kind of reisilometer according to claim 2 detects auxiliary stand with multiple spot, it is characterised in that the locating piece (4) junction with first locating rod (2) or second locating rod (3) is equipped with spin groove (9), the spin groove (9) set around first locating rod (2) or second locating rod (3), be provided with the spin groove (9) it is multiple with it is described Spin groove (9) rolls the roller ball (10) of connection, and the roller ball (10) can not leave the spin groove (9), the roller ball (10) setting is abutted with second locating rod (3) with first locating rod (2), the roller ball (10);The rolling Ball (10) by the gap between first locating rod (2) and the locating piece (4), second locating rod (3) with it is described fixed Gap filling between position block (4).
6. a kind of reisilometer according to claim 1 detects auxiliary stand with multiple spot, it is characterised in that the housing (1) Four frame sides (1001) on be equipped with and scribble graduated scale layer (11).
7. a kind of reisilometer according to claim 1 detects auxiliary stand with multiple spot, it is characterised in that the housing (1) Corner at it is remote with the vertical mounting rods (12) of plane, the mounting rod (12) where the housing (1) at least provided with four One end of the housing (1) is provided with installing plate (13), plane where the installing plate (13) vertically with the mounting rod (12) axle Line.
CN201720414878.9U 2017-04-20 2017-04-20 A kind of reisilometer detects auxiliary stand with multiple spot Expired - Fee Related CN207036586U (en)

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Application Number Priority Date Filing Date Title
CN201720414878.9U CN207036586U (en) 2017-04-20 2017-04-20 A kind of reisilometer detects auxiliary stand with multiple spot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720414878.9U CN207036586U (en) 2017-04-20 2017-04-20 A kind of reisilometer detects auxiliary stand with multiple spot

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CN207036586U true CN207036586U (en) 2018-02-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109085055A (en) * 2018-09-03 2018-12-25 温州市林鸥工程建设监理有限公司 A kind of reisilometer multiple spot detection auxiliary stand
CN111122435A (en) * 2020-01-10 2020-05-08 上海市建筑科学研究院有限公司 Auxiliary equipment for detecting existing external thermal insulation system by adopting resiliometer
CN111503450A (en) * 2020-04-17 2020-08-07 歌尔微电子有限公司 Positioning mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109085055A (en) * 2018-09-03 2018-12-25 温州市林鸥工程建设监理有限公司 A kind of reisilometer multiple spot detection auxiliary stand
CN109085055B (en) * 2018-09-03 2020-10-20 浙江林鸥工程管理有限公司 Multi-point detection auxiliary support for resiliometer
CN111122435A (en) * 2020-01-10 2020-05-08 上海市建筑科学研究院有限公司 Auxiliary equipment for detecting existing external thermal insulation system by adopting resiliometer
CN111503450A (en) * 2020-04-17 2020-08-07 歌尔微电子有限公司 Positioning mechanism
CN111503450B (en) * 2020-04-17 2022-02-25 歌尔微电子有限公司 Positioning mechanism

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