CN114019013B - Building wall steel bar breakpoint detection device and detection method - Google Patents
Building wall steel bar breakpoint detection device and detection method Download PDFInfo
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- CN114019013B CN114019013B CN202111236341.5A CN202111236341A CN114019013B CN 114019013 B CN114019013 B CN 114019013B CN 202111236341 A CN202111236341 A CN 202111236341A CN 114019013 B CN114019013 B CN 114019013B
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- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
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Abstract
The application discloses building wall reinforcing bar breakpoint detection device and detection method, it includes: a base provided with a magnetic method instrument host; a vertical plate vertically mounted on the base; a sliding plate connected to the vertical plate in a sliding manner along the vertical direction; the detection head is arranged on the sliding plate, is connected with the magnetic method instrument host through a magnetic method instrument connecting wire and is used for detecting the position of a steel bar breaking point in the wall body; the lifting component is arranged on the vertical plate and used for driving the sliding plate to slide along a preset direction; and a marking component which is arranged on the sliding plate and used for marking the position of the breaking point of the steel bar detected by the wall body. This application when using, can have and replace artifical effectual reinforcing bar breakpoint to building to detect, labour saving and time saving not only has still improved the precision.
Description
Technical Field
The invention relates to the field of building wall quality detection, in particular to a device and a method for detecting a breakpoint of a steel bar of a building wall.
Background
In the building construction process, the reinforcing bar is essential component, in order to improve the intensity of wall body, can set up the reinforcing bar at building wall body inside usually, and the reinforcing bar has good tensile properties, can effectively improve the bulk strength of building.
After a period of time, the reinforcing bar has the condition of breakpoint in building the wall, leads to the tensile effect of whole reinforcing bar to weaken, generally needs people to utilize equipment instrument to detect out the position of reinforcing bar breakpoint in the wall, replaces or repairs reinforcing bar breakpoint position again, and at present, the mode of traditional detection reinforcing bar breakpoint is mainly, detects the wall surface through artifical handheld sound wave test probe.
Aiming at the related technical conditions, the inventor considers that the traditional method for detecting the breaking point of the wall steel bar wastes time and labor, and the detection precision is low due to the shaking condition of hands, so that the detection precision is to be improved.
Disclosure of Invention
An object of the application is to provide a building wall reinforcing bar breakpoint detection device and detection method, can replace artifical effectual reinforcing bar breakpoint in to the building to detect, not only labour saving and time saving has still improved the precision.
The application provides a pair of building wall reinforcing bar breakpoint detection device adopts following technical scheme:
a building wall reinforcing bar breakpoint detection device includes: a base provided with a magnetic method instrument host; a vertical plate vertically mounted on the base; a sliding plate connected to the vertical plate in a sliding manner along the vertical direction; the detection head is arranged on the sliding plate, is connected with the magnetic method instrument host through a magnetic method instrument connecting wire and is used for detecting the position of a steel bar breaking point in the wall body; the lifting component is arranged on the vertical plate and used for driving the sliding plate to slide along a preset direction; and a marking assembly which is arranged on the sliding plate and used for marking the breaking point position of the steel bar detected by the wall body.
Through adopting above-mentioned technical scheme, the lifting unit who sets up can drive and detect the head and detect the reinforcing bar breakpoint in to the wall body, and give magnetic method appearance host computer with the data transmission that detects, the data that shows through magnetic method appearance host computer can be very convenient the region of judgement reinforcing bar breakpoint, then utilize the mark subassembly, can be very convenient do the mark on the preset position of wall body, in order to make things convenient for follow-up staff to carry out work, this scheme easy operation, can effectual improvement to the precision that the reinforcing bar breakpoint detected.
The detection device is characterized in that the vertical plate is provided with a strip-shaped sliding opening along the extending direction of the vertical plate, a sliding column with two ends extending out of the strip-shaped sliding opening is connected in the strip-shaped sliding opening in a sliding mode, the sliding plate is installed on the sliding column, and a telescopic assembly used for driving the detection head to stretch in the sliding column is arranged on the sliding column.
Through adopting above-mentioned technical scheme, the flexible subassembly of setting can drive and detect the head and stretch out and draw back in the slip post, reduces the hindrance that the detection head led to the fact other parts, makes things convenient for the mark subassembly to mark the breakpoint region.
The present application further provides that the telescopic assembly comprises: the sliding rod penetrates through the sliding plate at one end and penetrates through the sliding column from one end far away from the sliding plate at the other end in a sliding manner; and the first driving piece is arranged on the sliding column and used for driving the sliding rod to stretch in the sliding column, and the detection head is arranged at one end, far away from the first driving piece, of the sliding rod.
Through adopting above-mentioned technical scheme, when opening first driving piece, first driving piece can drive the slide bar and carry out concertina movement in the slip post to the detection head that drives slide bar tip stretches out and draws back in the slip post, and this structure not only can effectively protect and detect the head, can also reduce the hindrance that the detection head led to the fact other parts.
The present application further provides that the marking assembly comprises: a rotating rod installed at a predetermined position on both sides of the slide plate; a mounting rod mounted on the rotating rod; the marking pen is arranged at one end of the mounting rod, which is far away from the rotating rod; and a second driving member mounted on the slide plate for driving the rotation rod to rotate.
Through adopting above-mentioned technical scheme, when needs mark the breakpoint region, can open the second driving piece and drive the dwang and rotate for two installation poles on the slide rotate around respective second driving piece, thereby can draw crisscross mark on the preset position of wall body, not through easy operation, and the mark precision is also higher.
The installation rod is further provided with an installation cylinder for containing the marking pen at one end far away from the rotating rod, a compression spring is installed on the bottom wall of the installation cylinder, and a cushion block for driving the marking pen to stretch in the installation cylinder is fixed at one end far away from the installation cylinder of the compression spring.
Through adopting above-mentioned technical scheme, the compression spring that sets up can utilize the elastic force drive marking pen of self to slide in the installation section of thick bamboo, not only can make marking pen and wall body surface inconsistent, can also play certain buffering guard action to marking pen.
The side that the dwang was kept away from to the slide is provided with the spacing piece that is used for restricting the marker pen, the setting of the lopsidedness of spacing piece towards keeping away from the slide, the marker pen can rotate to the position with spacing piece butt under the drive of second driving piece.
By adopting the technical scheme, when the marking assembly is not suitable for use, the second driving piece is opened to drive the rotating rod to rotate, so that the end part of the marking pen on the rotating rod is abutted against the limiting piece, and the situation that the marking pen always marks a line on a wall body is prevented.
The movable plate is connected to the bearing surface of the base in a sliding mode, a plurality of vertical rods are fixed to the movable plate, a supporting plate is sleeved on each vertical rod in a sliding mode, a vertical plate is fixed to the supporting plate, a first power assembly used for driving the supporting plate to ascend and descend is arranged on the movable plate, and a third driving piece used for driving the movable plate to move is arranged on the base.
By adopting the technical scheme, the third driving piece is started, the movable plate can be driven to move on the base, the movable plate can drive the detection head to move along the moving direction of the movable plate in the moving process, so that the detection range of the breaking point of the reinforcing steel bar in the wall body can be enlarged on the original basis, and the detection range of the detection head can be further enlarged in the vertical direction by the aid of the arranged first power assembly, so that the detection accuracy can be effectively improved.
The movable plate is further provided with a rotary table rotatably mounted on the bearing surface of the movable plate, the supporting plate and the vertical rods are both mounted on the rotary table, and the movable plate is provided with a second power assembly for driving the rotary table to rotate.
Through adopting above-mentioned technical scheme, open second power component, can drive the carousel and drive the detection head and rotate to make things convenient for the detection head to detect the wall body in other directions.
The rotary table is further provided with an air cylinder vertically, and the output end of the air cylinder is connected with a bearing plate for bearing the bottom of the support plate.
Through adopting above-mentioned technical scheme, the bearing board that sets up not only can make the stable lift of backup pad under the drive of cylinder, simultaneously, can also play the bearing effect to the backup pad, reduces the condition that the backup pad appears rocking.
The application also provides a method for detecting the breakpoint of the reinforcing steel bar of the building wall, which comprises the following steps:
the method comprises the following steps: moving the base to a preset position to enable the detection head to be close to the position to be detected of the wall body;
step two: starting the lifting assembly, the first power assembly and the third driving member to enable the detection head on the vertical plate to detect the breaking point of the steel bar along a preset track;
step three: judging the detected data, and when the detected magnetic induction intensity firstly falls and then rises, indicating that the position is a breakpoint region;
step four: the opening marking component marks the preset position of the breakpoint region.
In summary, the present application includes at least one of the following beneficial technical effects:
the detection head capable of moving up and down and left and right is arranged, so that the detection head can carry out omnibearing detection on the breaking point of the steel bar in the wall body, and the detection accuracy is improved;
through setting up the mark subassembly, after judging the position of reinforcing bar breakpoint, drive mark subassembly that can be very convenient replaces the manual work to mark the breakpoint region, and not only labour saving and time saving marks moreover accurately, has further improved the detection accuracy of reinforcing bar breakpoint.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
fig. 2 is a sectional view of the mounting cylinder in the embodiment of the present application.
Description of reference numerals: 1. a base; 2. a vertical plate; 20. a detection head; 21. a slide plate; 22. a strip-shaped sliding opening; 23. a sliding post; 24. a slide bar; 25. a first cylinder; 26. a rodless cylinder; 3. rotating the rod; 31. mounting a rod; 32. a marking pen; 33. mounting the cylinder; 34. a compression spring; 35. cushion blocks; 36. a limiting sheet; 4. moving the plate; 41. a vertical rod; 42. a support plate; 43. a turntable; 44. a cylinder; 45. a support plate; 46. a servo motor; 47. a gear.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses building wall reinforcing bar breakpoint detection device, as shown in fig. 1 and fig. 2, include: base 1 installs the universal wheel that makes things convenient for base 1 to remove in base 1's bottom, and vertical installation has riser 2 on base 1, has seted up the bar in vertical direction on riser 2 and has slided mouthful 22, and sliding connection has slip post 23 in the bar slides mouthful 22, and the both ends of slip post 23 all wear out the bar and slide mouthful 22 predetermined length.
Wherein, be fixed with slide 21 in the one end of slip post 23, the four sides in slide 21 cross-section all equals, and slide 21 and riser 2 are parallel to each other, be provided with rodless cylinder 26 along vertical direction on riser 2, rodless cylinder 26 can drive slide 21 and slide along riser 2's extending direction when opening, in order to detect the reinforcing bar breakpoint in the wall, in this embodiment, install detection head 20 on slide 21, install magnetism method appearance host computer on base 1, magnetism method appearance host computer is connected through magnetism method appearance connecting wire with detection head 20.
When the position of reinforcing bar breakpoint in the wall body needs to be detected, can remove base 1 to the preset position that is close to the wall body, open lifting unit and drive slide 21 and slide, slide 21 can drive and detect head 20 and detect the reinforcing bar in the wall body at last gliding process to detect data transmission and give magnetic method appearance host computer, through data and image analysis to the magnetic method appearance host computer, can be very convenient find the region of reinforcing bar breakpoint in the wall body.
In order to increase the detection range of the detection head 20, in this embodiment, a moving plate 4 is slidably connected to the bearing surface of the base 1, a rotating plate 43 is rotatably mounted on the moving plate 4, two vertical rods 41 are vertically mounted on the rotating plate 43, a supporting plate 42 is slidably sleeved on the vertical rods 41, and the vertical plate 2 is fixed on the supporting plate 42, wherein a first power assembly for driving the supporting plate 42 to ascend and descend is arranged on the moving plate 4, a second power assembly for driving the rotating plate 43 to rotate is mounted on the moving plate 4, and a third driving member for driving the moving plate 4 to horizontally move is further arranged on the base 1.
In this embodiment, the first power assembly includes two servo motors 46 installed on the turntable 43 through the mounting bracket, the servo motors 46 are located on two sides of the supporting plate 42, a gear 47 is installed on the servo motors 46, racks are attached to two sides of the supporting plate 42 along the vertical direction, the racks are meshed with the gear 47, when the servo motors 46 are opened, the gear 47 can be driven to rotate, when the gear 47 rotates, the supporting plate 42 can be driven to slide on the vertical rod 41 through the racks, and therefore the detection range of the detection head 20 is enlarged.
In this embodiment, the second power assembly may be a motor installed inside the moving plate 4, the third driving member may be a hydraulic cylinder, and when the hydraulic cylinder is opened, the moving plate 4 may be driven to horizontally move on the base 1, so that the detection range of the detection head 20 may be further increased on the basis of moving up and down, and the comprehensiveness and accuracy of the detection data may be improved.
Simultaneously, if the wall body or the different side of same wall body that need detect different positions, can come to drive carousel 43 through opening the motor and rotate, carousel 43 can drive whole riser 2 and detect head 20 and turn to at rotatory in-process to the different actual need of adaptation.
In addition, in order to improve the stability of the supporting plate 42 during the moving process, in the present embodiment, an air cylinder 44 is vertically disposed on the rotating disc 43, a supporting plate 45 is mounted at the top end of the piston rod of the air cylinder 44, and the supporting plate 45 is fitted to the bottom of the supporting plate 42.
Wherein, a slide bar 24 is inserted in the slide column 23 in a sliding manner, one end of the slide bar 24 penetrates out from the slide plate 21, the other end penetrates out from one end of the slide column 23 far away from the slide plate 21, a first cylinder 25 is installed on the slide column 23, a piston rod of the first cylinder 25 is fixed with the end part of the slide bar 24 far away from the slide plate 21, and the detection head 20 is installed at one end of the slide bar 24 far away from the first cylinder 25, when the first cylinder 25 is opened, the slide bar 24 can be driven to contract in the slide column 23, so that the detection head 20 contracts into the slide column 23, thereby playing a role of protecting the detection head 20.
When detecting head 20 and detecting out the internal reinforcing bar breakpoint region of wall, in order the position of mark play reinforcing bar breakpoint that can be timely, in this embodiment, install the mark subassembly on slide 21, it is specific, the mark subassembly includes: install the dwang 3 at the both corners position that slide 21 is close to base 1 one side, all install servo motor in the bottom both corners position that slide 21 is close to riser 2 one side, servo motor's output shaft is fixed mutually with the tip of dwang 3, install installation pole 31 at the one end that the servo motor was kept away from to dwang 3, installation pole 31 and slide 21 are in the state that is parallel to each other, install the marker pen 32 at the one side that dwang 3 was kept away from to installation pole 31.
When detecting head 20 and detecting out the position of reinforcing bar breakpoint in the wall body, need open first cylinder 25 earlier and drive and detect head 20 and shrink to sliding column 23 in, then open servo motor and drive dwang 3 and rotate, dwang 3 is at rotatory in-process, can drive the mark pen 32 on the installation pole 31 and use dwang 3 as centre of a circle drawing pitch arc on the wall body surface, the pitch arc intersect that two mark pens 32 draw is for detecting the reinforcing bar breakpoint region that head 20 detected out promptly, through this scheme, can be very convenient detect out the region of reinforcing bar breakpoint.
In addition, consider that there is unevenness's condition on the wall surface, consequently, install the installation section of thick bamboo 33 that is used for holding marker pen 32 in the one end of installing pole 31 keeping away from dwang 3, install compression spring 34 in the diapire of installation section of thick bamboo 33, be fixed with cushion 35 in the one end that compression spring 34 kept away from the installation section of thick bamboo 33 diapire, when marker pen 32 installs in installation section of thick bamboo 33, its bottom can be inconsistent with cushion 35, the compression spring 34 that sets up just can utilize self elastic force, drive marker pen 32 slides in installation section of thick bamboo 33, with the different wall of adaptation.
In addition, in order to limit the marking pen 32 from marking a line on a wall surface when the marking pen 32 is not used, the limiting piece 36 for limiting the marking pen 32 is arranged at each of two corner positions of the side edge of the sliding plate 21 away from the rotating rod 3, and a space for accommodating the marking pen 32 and the mounting cylinder 33 is arranged between the limiting piece 36 and the sliding plate 21, it should be noted that the limiting piece 36 is arranged in an inclined manner towards the side away from the sliding plate 21, so that the advantage of the arrangement is that when the marking pen 32 is driven by the servo motor to rotate to be close to the limiting piece 36, the inclined surface of the tip end of the marking pen 32 will be in contact with the inclined limiting piece 36, so that the marking pen 32 is retracted into the mounting cylinder 33 until the mounting cylinder 33 rotates to be in the space between the limiting piece 36 and the sliding plate 21, and at this time, the marking of the marking pen 32 can be limited, and the normal operation of the detection head 20 will not be interfered.
The embodiment further provides a method for detecting a breakpoint of a steel bar of a building wall, which includes the following steps:
the method comprises the following steps: moving the base 1 to a preset position close to the position to be detected of the wall body, and adjusting the position of the detection head 20 to enable the detection head 20 to be close to the position to be detected of the wall body;
step two: starting the rodless cylinder 26, the first power assembly and the third driving piece to enable the detection head 20 on the vertical plate 2 to comprehensively detect the breaking point of the steel bar in the wall body along a preset track;
step three: judging data detected on a main machine of the magnetic method instrument, and when the detected magnetic induction intensity firstly falls and then rises, indicating that the position is a breakpoint region;
step four: the opening marking component marks the preset position of the breakpoint region.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. The utility model provides a building wall reinforcing bar breakpoint detection device which characterized in that includes: a base (1) provided with a magnetic method instrument host;
a vertical plate (2) vertically mounted on the base (1);
a sliding plate (21) which is connected to the vertical plate (2) in a sliding manner along the vertical direction;
the detection head (20) is arranged on the sliding plate (21), is connected with the magnetic method instrument host through a magnetic method instrument connecting wire and is used for detecting the position of a steel bar breaking point in the wall body;
the lifting component is arranged on the vertical plate (2) and used for driving the sliding plate (21) to slide along a preset direction;
the marking component is arranged on the sliding plate (21) and is used for marking the position of the steel bar breakpoint detected by the wall body;
the marking assembly includes: a rotating rod (3) installed at a predetermined position on both sides of the sliding plate (21); a mounting lever (31) mounted on the rotating lever (3); a marking pen (32) arranged at one end of the mounting rod (31) far away from the rotating rod (3); and install and be used for driving the rotatory second driving piece of dwang (3) on slide (21), installation pole (31) are kept away from the one end of dwang (3) and are installed installation section of thick bamboo (33) that are used for holding marker pen (32), compression spring (34) are installed to the diapire of installation section of thick bamboo (33), the one end that installation section of thick bamboo (33) was kept away from in compression spring (34) is fixed with and is used for driving marker pen (32) cushion (35) that stretches out and draws back in installation section of thick bamboo (33), the side that dwang (3) were kept away from in slide (21) is provided with spacing piece (36) that are used for restricting marker pen (32), spacing piece (36) set up towards the lopsidedness of keeping away from slide (21), marker pen (32) can rotate under the drive of second driving piece to the position with spacing piece (36) butt.
2. The breakpoint detection device for the reinforcing steel bars of the building wall body according to claim 1, wherein a strip-shaped sliding opening (22) is formed in the vertical plate (2) along the extending direction of the vertical plate, a sliding column (23) with two ends extending out of the strip-shaped sliding opening (22) is slidably connected to the strip-shaped sliding opening (22), the sliding plate (21) is installed on the sliding column (23), and a telescopic assembly for driving the detection head (20) to stretch and retract in the sliding column (23) is arranged on the sliding column (23).
3. The device for detecting the breakpoint of the steel bar of the building wall body as claimed in claim 2, wherein the telescopic assembly comprises: a sliding rod (24) with one end penetrating through the sliding plate (21) and the other end sliding through the sliding column (23) far away from one end of the sliding plate (21); and the first driving piece is arranged on the sliding column (23) and used for driving the sliding rod (24) to stretch and retract in the sliding column (23), and the detection head (20) is arranged at one end of the sliding rod (24) far away from the first driving piece.
4. The building wall steel bar breakpoint detection device according to claim 1, wherein a movable plate (4) is slidably connected to a bearing surface of the base (1), a plurality of vertical rods (41) are fixed to the movable plate (4), a support plate (42) is slidably sleeved on each vertical rod (41), the vertical plates (2) are fixed to the support plate (42), a first power component for driving the support plate (42) to ascend and descend is arranged on the movable plate (4), and a third driving piece for driving the movable plate (4) to move is arranged on the base (1).
5. The building wall steel bar breakpoint detection device according to claim 4, wherein a rotary table (43) is rotatably mounted on a bearing surface of the moving plate (4), the support plate (42) and the vertical rod (41) are both mounted on the rotary table (43), and a second power assembly for driving the rotary table (43) to rotate is arranged on the moving plate (4).
6. The device for detecting the breakpoint of the steel bar of the building wall as claimed in claim 5, wherein an air cylinder (44) is vertically arranged on the rotary table (43), and a supporting plate (45) for supporting the bottom of the supporting plate (42) is connected to an output end of the air cylinder (44).
7. A method for detecting a breakpoint of a reinforcing steel bar of a building wall body, which is based on the detection device of any one of claims 1 to 6, and comprises the following steps:
the method comprises the following steps: moving the base (1) to a preset position to enable the detection head (20) to be close to the position to be detected of the wall body;
step two: starting the lifting assembly, the first power assembly and the third driving member to enable the detection head (20) on the vertical plate (2) to detect the breaking point of the steel bar along a preset track;
step three: judging the detected data, and when the detected magnetic induction intensity firstly falls and then rises, indicating that the position is a breakpoint region;
step four: the opening marking component marks the preset position of the breakpoint region.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236341.5A CN114019013B (en) | 2021-10-22 | 2021-10-22 | Building wall steel bar breakpoint detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236341.5A CN114019013B (en) | 2021-10-22 | 2021-10-22 | Building wall steel bar breakpoint detection device and detection method |
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| CN114019013A CN114019013A (en) | 2022-02-08 |
| CN114019013B true CN114019013B (en) | 2022-05-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113049490B (en) * | 2021-03-05 | 2022-07-05 | 宁波广安达建筑工程有限公司 | Quality detection equipment and method for heat preservation wall |
| CN114814106B (en) * | 2022-05-06 | 2023-08-08 | 河南省建筑科学研究院有限公司 | Building outer wall nondestructive testing equipment with marking structure and application method |
| CN115389734B (en) * | 2022-08-26 | 2024-09-24 | 贵州省建材产品质量检验检测院 | Breakpoint detection device for building steel |
| CN116255951B (en) * | 2023-03-14 | 2024-04-26 | 广东才泓工程管理有限公司 | Reinforcing bar on-spot detector for engineering management |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4072659B2 (en) * | 1998-12-15 | 2008-04-09 | 東芝プラントシステム株式会社 | Inking device with lifting device |
| JP2003315004A (en) * | 2002-04-24 | 2003-11-06 | Nippon Telegraph & Telephone East Corp | Method and apparatus for measuring thickness of covering concrete of reinforcing steel in ferroconcrete wall |
| CN106054259B (en) * | 2016-07-05 | 2018-04-17 | 江苏方建质量鉴定检测有限公司 | A kind of wall steel bar breaking point detection method |
| CN208043738U (en) * | 2018-02-02 | 2018-11-02 | 江苏方建质量鉴定检测有限公司 | It is a kind of to be used for the magnetic method instrument detection device with reinforcing bar building element |
| CN208476869U (en) * | 2018-06-22 | 2019-02-05 | 深圳市世鹏资产评估房地产土地估价顾问有限公司 | Earthquake-resistant building detection device for Real Estate Appraisal detection |
| CN109406282B (en) * | 2018-12-13 | 2021-04-09 | 深圳市华科达检测有限公司 | Masonry structure compression resistance detection equipment and detection method |
| CN110109192B (en) * | 2019-05-23 | 2020-08-25 | 南充市嘉恒建设工程质量检测有限公司 | Auxiliary detection device of steel bar detector and use method thereof |
| CN210375902U (en) * | 2019-08-02 | 2020-04-21 | 天津市津泰建设工程检测有限公司 | Building engineering concrete main body detection zone drawing device |
| CN112113489B (en) * | 2020-09-17 | 2022-03-22 | 成都精准混凝土有限公司 | Concrete carbonization degree of depth detection device |
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