CN216977850U - A thickness detector of structural concrete reinforcement protective layer - Google Patents

A thickness detector of structural concrete reinforcement protective layer Download PDF

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CN216977850U
CN216977850U CN202220382710.5U CN202220382710U CN216977850U CN 216977850 U CN216977850 U CN 216977850U CN 202220382710 U CN202220382710 U CN 202220382710U CN 216977850 U CN216977850 U CN 216977850U
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detector
detection frame
protective layer
detection
supporting rods
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黄礼良
曾元成
李春芳
祁兄花
李成义
井含霞
刘昕晨
李云
李静
羊加才让
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Qinghai Noan Testing Technology Co ltd
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Qinghai Noan Testing Technology Co ltd
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Abstract

The utility model relates to the technical field of detection of the thickness of a concrete reinforcement protective layer, in particular to a thickness detector of the structural concrete reinforcement protective layer, which comprises a detection frame and a detector, wherein the detector is fixed in the middle of the lower end of the detection frame; according to the utility model, the lifting plate, the L-shaped supporting rod and the universal wheel are driven to move by the electric telescopic shaft, so that the distance between the detector and the detection probe and the wall can be conveniently adjusted, and the distance between the detector and the detection probe and the wall can be adjusted without manual forced pressing, so that the operation is more labor-saving.

Description

一种结构混凝土钢筋保护层厚度检测仪A kind of thickness detector of structural concrete reinforcement protective layer

技术领域technical field

本实用新型涉及混凝土钢筋保护层厚度检测技术领域,尤其是指一种结构混凝土钢筋保护层厚度检测仪。The utility model relates to the technical field of thickness detection of the protective layer of concrete reinforcing bars, in particular to a thickness detector of the protective layer of structural concrete reinforcing bars.

背景技术Background technique

建筑行业中,通常会使用到钢筋保护层厚度检测仪,它是用于检测现有钢筋混凝土或新建钢筋混凝土内部钢筋直径、位置、钢筋分布及钢筋混凝土保护层厚度的仪器;In the construction industry, the steel cover thickness detector is usually used. It is an instrument used to detect the diameter, position, distribution of steel bars and the thickness of the steel cover within the existing reinforced concrete or new reinforced concrete;

根据中国专利申请号2020211233442.2公开的一种用于钢筋混凝土保护层厚度的检测工具,包括固定板以及横杆,所述横杆设置在所述固定板侧表面,所述固定板与所述横杆上设置有辅助结构,所述辅助结构,主要包括:固定部、豁口以及移动部,所述固定部设置在所述固定板上,所述豁口开在所述横杆相对两端,所述移动部设置在所述横杆内,该实用新型方便拆卸使用,可以根据不同的按压力度调整检测仪与墙壁之间的距离,方便移动,使用起来更加方便控制;According to Chinese Patent Application No. 2020211233442.2, a detection tool for the thickness of a reinforced concrete protective layer is disclosed, comprising a fixed plate and a cross bar, the cross bar is arranged on the side surface of the fixed plate, and the fixed plate and the cross bar are arranged on the side surface of the fixed plate. An auxiliary structure is provided on the upper part. The auxiliary structure mainly includes: a fixed part, a gap and a moving part. The fixed part is arranged on the fixed plate; The utility model is easy to disassemble and use, and the distance between the detector and the wall can be adjusted according to different pressing forces, which is convenient to move and more convenient to control;

但是该专利存在以下不足,由于需要通过人工用力按压检测工具来调整检测仪与墙壁之间的距离,导致操作不够省力,而且通过检测仪检测完墙壁混凝土钢筋保护层厚度的相应位置后,若不对对检测后的墙壁位置进行标记,会导致工作人员反复检测该墙壁的混凝土钢筋保护层厚度,从而出现操作失误,易产生检测无用功。However, this patent has the following shortcomings. Because the distance between the detector and the wall needs to be adjusted by manually pressing the detection tool, the operation is not labor-saving enough, and after the detector detects the corresponding position of the thickness of the concrete reinforcement layer of the wall, if it is not correct Marking the position of the detected wall will cause the staff to repeatedly detect the thickness of the protective layer of the concrete reinforcement on the wall, resulting in operational errors and useless detection.

实用新型内容Utility model content

本实用新型是提供一种结构混凝土钢筋保护层厚度检测仪,利于提升操作省力性,减少操作失误,以免产生检测无用功。The utility model provides a thickness detector of the protective layer of structural concrete steel bars, which is beneficial to improve the labor-saving operation, reduce operation errors, and avoid useless detection work.

为了解决上述技术问题,本实用新型采用如下技术方案:In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

一种结构混凝土钢筋保护层厚度检测仪,包括检测架和检测仪,所述检测仪固定于所述检测架下端中部:A thickness detector of a structural concrete reinforcing bar protection layer, comprising a detection frame and a detector, wherein the detector is fixed in the middle of the lower end of the detection frame:

所述检测仪下端安装有检测探头,所述检测架上端内侧固定有两根导向杆,两根所述导向杆外围套设有升降板,所述升降板下端设有支撑组件;A detection probe is installed at the lower end of the detector, two guide rods are fixed on the inner side of the upper end of the detection frame, a lifting plate is sleeved on the periphery of the two guide rods, and a support assembly is arranged at the lower end of the lifting plate;

所述检测架左侧设有定位组件;The left side of the detection frame is provided with a positioning assembly;

所述检测架下端左侧设有标记组件。A marker assembly is provided on the left side of the lower end of the detection frame.

进一步地,两根所述导向杆上端之间焊接有把手,所述把手外围套接有海绵套。Further, a handle is welded between the upper ends of the two guide rods, and a sponge sleeve is sleeved on the periphery of the handle.

进一步地,所述支撑组件包括L型支杆、万向轮及电伸缩轴,所述L型支杆共设有四根且一一固定于所述升降板下端四角,所述L型支杆均往下滑动贯穿出所述检测架下面,所述万向轮共设有四个且一一转动连接于四根所述L型支杆下端外侧,所述电伸缩轴相接于所述升降板与所述检测架之间。Further, the support assembly includes an L-shaped support rod, a universal wheel and an electric telescopic shaft. There are four L-shaped support rods in total and they are fixed to the four corners of the lower end of the lifting plate one by one. The L-shaped support rod They all slide downward and pass through the underside of the detection frame. There are four universal wheels and they are connected to the outer sides of the lower ends of the four L-shaped struts one by one. The electric telescopic shaft is connected to the lift. between the plate and the detection frame.

进一步地,所述定位组件包括阻尼转轴和激光指示灯,所述阻尼转轴转动连接于所述检测架左端中部,所述激光指示灯相接于所述阻尼转轴外端。Further, the positioning assembly includes a damping shaft and a laser indicator light, the damping shaft is rotatably connected to the middle of the left end of the detection frame, and the laser indicator is connected to the outer end of the damping shaft.

进一步地,所述标记组件包括弹簧伸缩杆、安装套、标记笔及弧形凸块,所述簧伸缩杆固定于所述检测架下端并与所述激光指示灯左右对应,所述安装套焊接于所述弹簧伸缩杆下端。Further, the marking assembly includes a spring telescopic rod, an installation sleeve, a marker pen and an arc-shaped bump, the spring telescopic rod is fixed on the lower end of the detection frame and corresponds to the left and right of the laser indicator light, and the installation sleeve is welded. at the lower end of the spring telescopic rod.

进一步地,所述标记笔往上穿插进所述安装套内,所述弧形凸块共设有两块且分别相接于所述安装套内壁两端,两块所述弧形凸块分别夹持于所述标记笔两端。Further, the marking pen is inserted into the mounting sleeve upward, and two arc-shaped protrusions are provided in total and are respectively connected to both ends of the inner wall of the mounting sleeve. The two arc-shaped protrusions are respectively clamped at both ends of the marker pen.

本实用新型的有益效果:The beneficial effects of the present utility model:

1.通过电伸缩轴带动升降板、L型支杆及万向轮进行移动,从而方便调节检测仪及测探头与墙壁之间的距离,无需人工用力按压来调节检测仪及检测探头与墙壁之间的距离,从而使操作更加省力;1. The lifting plate, L-shaped support rod and universal wheel are driven to move by the electric telescopic shaft, so that the distance between the detector and the measuring probe and the wall can be easily adjusted. The distance between them makes the operation more labor-saving;

2.通过设置激光指示灯,且通过激光指示灯射出的光线射向墙壁的待检测位置,利于使检测仪及检测探头精准的移动至墙壁相应位置来检测混凝土钢筋保护层厚度,保证了检测精准性;2. By setting a laser indicator, and the light emitted by the laser indicator is directed to the position to be detected on the wall, it is beneficial to move the detector and detection probe to the corresponding position of the wall accurately to detect the thickness of the concrete reinforcement protective layer, which ensures the detection accuracy. sex;

3.通过设置标记笔,当检测仪通过检测探头对墙壁相应位置的混凝土钢筋保护层厚度检测后,标记笔会在墙壁检测完的位置进行画线标记,从而使工作人员可以清晰的得知墙壁的哪些位置被检测过,以免工作人员对检测过的墙壁位置进行反复检测,利于减少操作失误,以免出现检测无用功。3. By setting the marker pen, when the detector detects the thickness of the concrete reinforcement protective layer at the corresponding position of the wall through the detection probe, the marker pen will mark the position where the wall has been detected, so that the staff can clearly know the thickness of the wall. Which positions have been detected, so that the staff can repeatedly detect the detected wall positions, which is beneficial to reduce operation errors and avoid useless detection.

附图说明Description of drawings

图1为本实用新型的整体结构示意图;Fig. 1 is the overall structure schematic diagram of the present utility model;

图2为本实用新型的安装套结构示意图;Fig. 2 is the structural representation of the installation sleeve of the present utility model;

图3为本实用新型的整体侧视结构示意图。FIG. 3 is a schematic view of the overall side structure of the utility model.

附图标记说明:Description of reference numbers:

检测架1、检测仪2、电伸缩轴3、升降板4、导向杆5、把手6、阻尼转轴7、激光指示灯8、L型支杆9、万向轮10、安装套11、标记笔12、弹簧伸缩杆13、弧形凸块14、检测探头15。Detection frame 1, detector 2, telescopic shaft 3, lift plate 4, guide rod 5, handle 6, damping shaft 7, laser indicator light 8, L-shaped support rod 9, universal wheel 10, installation sleeve 11, marker pen 12. Spring telescopic rod 13, arc-shaped bump 14, detection probe 15.

具体实施方式Detailed ways

为了便于本领域技术人员的理解,下面结合实施例与附图对本实用新型作进一步的说明,实施方式提及的内容并非对本实用新型的限定。In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

如图1、2所示,本实施例中,包括检测架1和检测仪2,所述检测仪2固定于所述检测架1下端中部,所述检测仪2下端安装有检测探头15,所述检测架1上端内侧固定有两根导向杆5,两根所述导向杆5外围套设有升降板4,所述升降板4下端设有支撑组件,两根所述导向杆5上端之间焊接有把手6,所述把手6外围套接有海绵套,所述支撑组件包括L型支杆9、万向轮10及电伸缩轴3,所述L型支杆9共设有四根且一一固定于所述升降板4下端四角,所述L型支杆9均往下滑动贯穿出所述检测架1下面,所述万向轮10共设有四个且一一转动连接于四根所述L型支杆9下端外侧,所述电伸缩轴3相接于所述升降板4与所述检测架1之间;As shown in Figures 1 and 2, in this embodiment, a detection frame 1 and a detector 2 are included, the detector 2 is fixed at the middle of the lower end of the detection frame 1, and a detection probe 15 is installed at the lower end of the detector 2, so Two guide rods 5 are fixed on the inner side of the upper end of the detection frame 1 , and a lifting plate 4 is sleeved on the outer periphery of the two guide rods 5 . A handle 6 is welded, and the outer periphery of the handle 6 is sleeved with a sponge sleeve. The support assembly includes an L-shaped strut 9, a universal wheel 10 and an electric telescopic shaft 3. The L-shaped strut 9 is provided with four and One by one is fixed to the four corners of the lower end of the lifting plate 4, the L-shaped struts 9 all slide downward and pass through the underside of the detection frame 1, and the universal wheels 10 are provided with a total of four and are rotatably connected to the four On the outer side of the lower end of the L-shaped support rod 9, the electric telescopic shaft 3 is connected between the lifting plate 4 and the detection frame 1;

具体地,当需要对墙壁的混凝土钢筋保护层厚度进行检测时,手握把手6将万向轮10贴于墙壁上,由于在把手6外围套接了海绵套,通过海绵套的柔性,提升了把手6使用时的舒适型,然后通过万向轮10的转动且带动L型支杆9、检测架1、检测仪2及检测探头15至墙壁的相应位置,接着启动电伸缩轴3且带动升降板4沿着导向杆5滑动并远离检测架1,升降板4则会拉动L型支杆9及万向轮10,万向轮10则靠近检测架1,从而使检测架1带动检测仪2及检测探头15靠近墙壁,直到检测探头15可以检测到墙壁的混凝土钢筋保护层厚度为止,从而方便调节检测仪2及测探头与墙壁之间的距离,因此无需人工用力按压来调节检测仪2及检测探头15与墙壁之间的距离,从而使操作更加省力。Specifically, when it is necessary to detect the thickness of the protective layer of concrete reinforcement on the wall, hold the handle 6 and stick the universal wheel 10 on the wall. Since a sponge cover is sleeved around the handle 6, the flexibility of the sponge cover improves the The handle 6 is comfortable in use, and then the L-shaped strut 9, the detection frame 1, the detector 2 and the detection probe 15 are driven to the corresponding positions on the wall by the rotation of the universal wheel 10, and then the electric telescopic shaft 3 is activated to drive the lifting and lowering. The plate 4 slides along the guide rod 5 and moves away from the detection frame 1, the lifting plate 4 will pull the L-shaped support rod 9 and the universal wheel 10, and the universal wheel 10 is close to the detection frame 1, so that the detection frame 1 drives the detector 2 And the detection probe 15 is close to the wall until the detection probe 15 can detect the thickness of the concrete reinforcement layer of the wall, so as to facilitate the adjustment of the detector 2 and the distance between the detection probe and the wall, so there is no need to manually press hard to adjust the detector 2 and the wall. The distance between the probe 15 and the wall is detected, thereby making the operation more labor-saving.

如图1、2所示,本实施例中,所述检测架1左侧设有定位组件,所述定位组件包括阻尼转轴7和激光指示灯8,所述阻尼转轴7转动连接于所述检测架1左端中部,所述激光指示灯8相接于所述阻尼转轴7外端;As shown in Figures 1 and 2, in this embodiment, a positioning assembly is provided on the left side of the detection frame 1. The positioning assembly includes a damping shaft 7 and a laser indicator light 8. The damping shaft 7 is rotatably connected to the detection In the middle of the left end of the frame 1, the laser indicator light 8 is connected to the outer end of the damping shaft 7;

为了提高检测时的精准性,启动激光指示灯8,通过阻尼转轴7的转动来调节激光指示灯8的倾斜角度,因此便于调节激光指示灯8光线射向的位置,然后通过激光指示灯8射出的光线射向墙壁的待检测位置,当万向轮10转动并带动检测仪2进行移动时,利于使检测仪2及检测探头15精准的移动至墙壁相应位置来检测混凝土钢筋保护层厚度,保证了检测精准性。In order to improve the accuracy of detection, the laser indicator light 8 is activated, and the inclination angle of the laser indicator light 8 is adjusted by damping the rotation of the rotating shaft 7, so it is convenient to adjust the position where the light of the laser indicator light 8 is directed, and then the laser indicator light 8 emits light. The light emitted from the beam is directed to the position to be detected on the wall. When the universal wheel 10 rotates and drives the detector 2 to move, it is beneficial to move the detector 2 and the detection probe 15 to the corresponding position of the wall accurately to detect the thickness of the protective layer of the concrete reinforcement. detection accuracy.

如图1、2、3所示,本实施例中,所述检测架1下端左侧设有标记组件,所述标记组件包括弹簧伸缩杆13、安装套11、标记笔12及弧形凸块14,所述簧伸缩杆13固定于所述检测架1下端并与所述激光指示灯8左右对应,所述安装套11焊接于所述弹簧伸缩杆13下端,所述标记笔12往上穿插进所述安装套11内,所述弧形凸块14共设有两块且分别相接于所述安装套11内壁两端,两块所述弧形凸块14分别夹持于所述标记笔12两端;As shown in FIGS. 1 , 2 and 3 , in this embodiment, a marker assembly is provided on the left side of the lower end of the detection frame 1 , and the marker assembly includes a spring telescopic rod 13 , an installation sleeve 11 , a marker pen 12 and an arc-shaped bump. 14. The spring telescopic rod 13 is fixed on the lower end of the detection frame 1 and corresponds to the left and right sides of the laser indicator light 8. The mounting sleeve 11 is welded to the lower end of the spring telescopic rod 13, and the marker pen 12 is passed upward. Inserted into the mounting sleeve 11 , the arc-shaped protrusions 14 are provided with two pieces in total and are respectively connected to both ends of the inner wall of the mounting sleeve 11 , and the two arc-shaped protrusions 14 are respectively clamped on the mounting sleeve 11 . Both ends of the marker pen 12;

通过设置标记笔12,当检测仪2通过检测探头15对墙壁相应位置的混凝土钢筋保护层厚度检测后,并需要对墙壁下一个位置进行检测时,且检测探头15不断靠近墙壁时,标记笔12会与墙壁接触,同时标记笔12会带动安装套11压缩弹簧伸缩杆13,通过弹簧伸缩杆13的弹性,防止标记笔12被折断,当万向轮10带动检测架1及检测仪2移动检测时,检测架1会带动弹簧伸缩杆13、安装套11及标记笔12一起移动,因此标记笔12会在墙壁检测完的位置进行画线标记,从而使工作人员可以清晰的得知墙壁的哪些位置被检测过,以免工作人员对检测过的墙壁位置进行反复检测,利于减少操作失误,以免出现检测无用功。By setting the marking pen 12, when the detector 2 detects the thickness of the concrete reinforcement protective layer at the corresponding position of the wall through the detection probe 15, and needs to detect the next position of the wall, and the detection probe 15 is constantly approaching the wall, the marking pen 12 At the same time, the marking pen 12 will drive the installation sleeve 11 to compress the spring telescopic rod 13. The elasticity of the spring telescopic rod 13 prevents the marking pen 12 from being broken. When the universal wheel 10 drives the detection frame 1 and the detector 2 to move and detect When the detection frame 1 drives the spring telescopic rod 13, the installation sleeve 11 and the marker pen 12 to move together, the marker pen 12 will mark the position where the wall has been detected, so that the staff can clearly know which parts of the wall are on the wall. The position has been detected, so that the staff can not repeatedly detect the detected wall position, which is beneficial to reduce operation errors and avoid useless detection.

如图1、2、3所示,本实施例中,所述标记组件包括弹簧伸缩杆13、安装套11、标记笔12及弧形凸块14,所述簧伸缩杆13固定于所述检测架1下端并与所述激光指示灯8左右对应,所述安装套11焊接于所述弹簧伸缩杆13下端,所述标记笔12往上穿插进所述安装套11内,所述弧形凸块14共设有两块且分别相接于所述安装套11内壁两端,两块所述弧形凸块14分别夹持于所述标记笔12两端;As shown in FIGS. 1 , 2 and 3 , in this embodiment, the marking assembly includes a spring telescopic rod 13 , a mounting sleeve 11 , a marking pen 12 and an arc-shaped bump 14 , and the spring telescopic rod 13 is fixed on the detection The lower end of the frame 1 corresponds to the left and right sides of the laser indicator light 8, the mounting sleeve 11 is welded to the lower end of the spring telescopic rod 13, the marking pen 12 is inserted into the mounting sleeve 11 upward, and the arc-shaped Two convex blocks 14 are provided in total and are respectively connected to both ends of the inner wall of the mounting sleeve 11 , and the two arc-shaped convex blocks 14 are respectively clamped at both ends of the marking pen 12 ;

进一步地,当标记笔12失效时,由于标记笔12通过弧形凸块14夹持在安装套11内,将旧的标记笔12从安装套11内拔出,且将弧形凸块14设置成弹性橡胶,然后将新的标记笔12插入至安装套11内,标记笔12会挤压弹性橡胶制成的弧形凸块14,弧形凸块14则通过回弹力夹持住位于安装套11内的标记笔12,以免标记笔12从安装套11内掉出,从而方便更换新的标记笔12至安装套11内进行使用。Further, when the marking pen 12 fails, since the marking pen 12 is clamped in the mounting sleeve 11 by the arc-shaped protrusions 14, the old marking pen 12 is pulled out from the mounting sleeve 11, and the arc-shaped protrusions 14 are set. Then insert the new marker pen 12 into the mounting sleeve 11, the marker pen 12 will squeeze the arc-shaped bumps 14 made of elastic rubber, and the arc-shaped bumps 14 will hold the position located in the mounting sleeve through the resilience force. The marking pen 12 in the mounting sleeve 11 can be avoided to prevent the marking pen 12 from falling out of the mounting sleeve 11 , so that it is convenient to replace the marking pen 12 with a new marking pen 12 for use in the mounting sleeve 11 .

本实施例中的所有技术特征均可根据实际需要而进行自由组合。All the technical features in this embodiment can be freely combined according to actual needs.

上述实施例为本实用新型较佳的实现方案,除此之外,还包括其它方式实现,在不脱离本技术方案构思的前提下任何显而易见的替换均在本实用新型的保护范围之内。The above-mentioned embodiment is the preferred implementation scheme of the present invention. In addition, other implementations are also included. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims (6)

1. The utility model provides a structural concrete reinforcing bar protective layer thickness detector, includes testing frame (1) and detector (2), detector (2) are fixed in testing frame (1) lower extreme middle part, its characterized in that:
the lower end of the detector (2) is provided with a detection probe (15), two guide rods (5) are fixed on the inner side of the upper end of the detection frame (1), a lifting plate (4) is sleeved on the periphery of the two guide rods (5), and a support assembly is arranged at the lower end of the lifting plate (4);
a positioning component is arranged on the left side of the detection frame (1);
and a marking assembly is arranged on the left side of the lower end of the detection frame (1).
2. The structural concrete reinforcing bar protective layer thickness detector of claim 1, wherein: and a handle (6) is welded between the upper ends of the two guide rods (5), and a sponge sleeve is sleeved on the periphery of the handle (6).
3. The structural concrete reinforcing bar protective layer thickness detector of claim 2, wherein: the supporting component comprises L-shaped supporting rods (9), universal wheels (10) and electric telescopic shafts (3), wherein the L-shaped supporting rods (9) are provided with four supporting rods and are fixed in four corners of the lower end of the lifting plate (4) one by one, the L-shaped supporting rods (9) are all penetrated out in a downward sliding mode and are arranged below the detection frame (1), the universal wheels (10) are provided with four supporting rods and are connected to the four supporting rods in a rotating mode one by one, the outer sides of the lower ends of the L-shaped supporting rods (9), and the electric telescopic shafts (3) are connected to the lifting plate (4) and the detection frame (1).
4. The structural concrete reinforcing bar protective layer thickness detector of claim 1, wherein: locating component includes damping pivot (7) and laser indicator (8), damping pivot (7) rotate connect in test rack (1) left end middle part, laser indicator (8) meet in damping pivot (7) outer end.
5. The instrument of claim 4, wherein: the marking assembly comprises a spring telescopic rod (13), a mounting sleeve (11), a marking pen (12) and an arc-shaped convex block (14), the spring telescopic rod (13) is fixed at the lower end of the detection frame (1) and corresponds to the laser indicator lamp (8) in a left-right mode, and the mounting sleeve (11) is welded at the lower end of the spring telescopic rod (13).
6. The instrument of claim 5, wherein: the marking pen (12) is upwards inserted into the installation sleeve (11), the two arc-shaped convex blocks (14) are arranged in a whole and are respectively connected to the two ends of the inner wall of the installation sleeve (11), and the two arc-shaped convex blocks (14) are respectively clamped at the two ends of the marking pen (12).
CN202220382710.5U 2022-02-24 2022-02-24 A thickness detector of structural concrete reinforcement protective layer Active CN216977850U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117890481A (en) * 2024-03-18 2024-04-16 中国建筑一局(集团)有限公司 Reinforced concrete detects with device of detecting a flaw with detect mark function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117890481A (en) * 2024-03-18 2024-04-16 中国建筑一局(集团)有限公司 Reinforced concrete detects with device of detecting a flaw with detect mark function

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