CN211824175U - Device for measuring elongation of reinforcing steel bar - Google Patents

Device for measuring elongation of reinforcing steel bar Download PDF

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CN211824175U
CN211824175U CN202020812677.6U CN202020812677U CN211824175U CN 211824175 U CN211824175 U CN 211824175U CN 202020812677 U CN202020812677 U CN 202020812677U CN 211824175 U CN211824175 U CN 211824175U
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seat
clamping
base
rod
sliding
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朱伟贤
黄杰鹏
施铸唐
吴金菊
刘艺艺
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Fujian Zhongfu Detection Technology Co ltd
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Fujian Zhongfu Detection Technology Co ltd
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Abstract

本实用新型提供一种测量钢筋伸长率装置,包括底座、设置在底座两端的基座及安装在基座上用于固定钢筋的夹持装置,所述底座为矩形板状结构,基座对称安装在底座的两端,基座的上端中间部分设有安装槽,夹持装置固定设置在安装槽内。该装置通过夹持座对钢筋进行固定,提高钢筋断裂后合拢的稳定性,在游标卡尺检测时碰触,不会导致明显的移动;螺杆控制夹持座移动,便于推进钢筋进行合拢;游标卡尺固定在夹持装置的上端,钢筋固定好后,下降游标卡尺对钢筋进行测量。使用该装置能够提高钢筋断后测量的稳定性,进而提高测量数据的准确性,操作简单便捷。

Figure 202020812677

The utility model provides a device for measuring the elongation of steel bars, comprising a base, bases arranged at both ends of the base, and a clamping device installed on the base for fixing steel bars. The base is a rectangular plate-like structure, and the base is symmetrical It is installed at both ends of the base, and the middle part of the upper end of the base is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove. The device fixes the steel bar through the clamping seat, which improves the stability of the steel bar when it is broken. When the vernier caliper is touched, it will not cause obvious movement; the screw controls the movement of the clamping seat, which is convenient for pushing the steel bar to close; the vernier caliper is fixed in the On the upper end of the clamping device, after the steel bar is fixed, the vernier caliper is lowered to measure the steel bar. The use of the device can improve the stability of the measurement after the steel bar is broken, thereby improving the accuracy of the measurement data, and the operation is simple and convenient.

Figure 202020812677

Description

一种测量钢筋伸长率装置A device for measuring the elongation of steel bars

技术领域technical field

本实用新型涉及工程建材检测技术领域,具体为一种测量钢筋伸长率装置。The utility model relates to the technical field of engineering building materials detection, in particular to a device for measuring the elongation of steel bars.

背景技术Background technique

断后伸长率在钢筋力学性能中有检测要求。《钢筋混凝土用钢第一部分:热轧光圆钢筋》GB1499.1—2017中规定:HPB300钢筋断后伸长率大于等于25%;《钢筋混凝土用钢第二部分:热轧带肋钢筋》GB1499.2—2018中规定:HRB400E钢筋断后伸长率必须大于等于16%。The elongation after fracture is required to be tested in the mechanical properties of steel bars. "Steel for Reinforced Concrete Part 1: Hot-Rolled Round Bar" GB1499.1-2017 stipulates that the elongation after fracture of HPB300 rebar is greater than or equal to 25%; "Steel for Reinforced Concrete Part 2: Hot-rolled ribbed rebar" GB1499. 2-2018 stipulates that the elongation of HRB400E steel bar after fracture must be greater than or equal to 16%.

现有试验是先在钢筋表面上留下标距记号,然后钢筋拉断后,将钢筋单独平放在操作台上拼接,目测拼接完整后,再用游标卡尺轻触标距记号测出长度,最后计算伸长率。钢筋多为圆柱体,由于钢筋拉断以后的两个端口参差不齐,如果钢筋拼接时不受束缚,在使用游标卡尺轻触测量伸长率时,就会导致钢筋容易滚动失稳,从而拼接不严,影响测量数据的准确性。The existing test is to first leave a gauge mark on the surface of the steel bar, then after the steel bar is broken, place the steel bar flat on the operating table and splicing it together. After the splicing is completed visually, touch the gauge mark with a vernier caliper to measure the length, and finally calculate the length. Elongation. Most of the steel bars are cylinders. Since the two ports after the steel bars are broken are uneven, if the steel bars are not bound when they are spliced, when the vernier caliper is used to measure the elongation, the steel bars will be easily rolled and unstable, so that the splicing cannot be performed. strict, affecting the accuracy of the measurement data.

实用新型内容Utility model content

本实用新型所解决的技术问题在于提供一种测量钢筋伸长率装置,以解决上述背景技术中提出的问题。The technical problem solved by the present invention is to provide a device for measuring the elongation of steel bars, so as to solve the problems raised in the above background technology.

本实用新型所解决的技术问题采用以下技术方案来实现:一种测量钢筋伸长率装置,包括底座、设置在底座两端的基座及安装在基座上用于固定钢筋的夹持装置,所述底座为矩形板状结构,基座对称安装在底座的两端,基座的上端中间部分设有安装槽,夹持装置固定设置在安装槽内;The technical problem solved by the utility model is realized by the following technical solutions: a device for measuring the elongation of steel bars, comprising a base, a base arranged at both ends of the base, and a clamping device installed on the base for fixing the steel bars, so the The base is a rectangular plate-like structure, the base is symmetrically installed at both ends of the base, the middle part of the upper end of the base is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove;

所述夹持装置包括安装在安装槽内的导板和转动座、设置在导板上滑动连接的夹持座、与夹持座螺纹连接的螺杆,所述螺杆的两端分别与转动座转动连接,螺杆贯穿夹持座的下端对应的螺孔并与夹持座螺纹连接,螺杆位于基座一端转动座的外端设有手柄,手柄控制螺杆旋转;The clamping device comprises a guide plate and a rotating seat installed in the installation groove, a clamping seat arranged on the guide plate for sliding connection, and a screw thread connected with the clamping seat, and the two ends of the screw rod are respectively rotatably connected with the rotating seat, The screw rod penetrates through the corresponding screw hole at the lower end of the clamping seat and is threadedly connected with the clamping seat.

所述夹持座设有两组并对称设置在导板上,夹持座包括与螺杆螺纹连接的滑动座、设置在滑动座上的定位座及设置在定位座一侧固定钢筋的夹持组件,定位座中间设有V型槽用于放置钢筋。The clamping seat is provided with two groups and is symmetrically arranged on the guide plate. The clamping seat includes a sliding seat connected with the screw thread, a positioning seat arranged on the sliding seat, and a clamping component arranged on one side of the positioning seat to fix the steel bar. There is a V-shaped groove in the middle of the positioning seat for placing steel bars.

作为本实用新型进一步方案:所述转动座的上端竖向安装有导杆,所述导杆上滑动连接有标尺组件,所述标尺组件包括滑动安装在导杆上的标杆及设置在标杆上的游标卡尺,标杆两端套接在导杆上滑动连接,标杆套接导杆的外端设有进行固定的旋紧螺栓;所述游标卡尺背部设有套环,游标卡尺通过套环在标杆上滑动连接。As a further solution of the present invention, a guide rod is installed vertically on the upper end of the rotating seat, and a scale assembly is slidably connected to the guide rod, and the scale assembly includes a benchmark rod slidably installed on the guide rod and a In the vernier caliper, both ends of the benchmark rod are sleeved on the guide rod for sliding connection, and the outer end of the benchmark rod is sleeved on the guide rod with a tightening bolt for fixing; the back of the vernier caliper is provided with a collar, and the vernier caliper is slidably connected on the benchmark rod through the collar.

作为本实用新型进一步方案:所述导板为双组并列结构,导板横置安装在安装槽的两端,安装槽位于两侧的导板之间安装转动座,导板和转动座通过螺丝固定安装在基座的安装槽内。As a further scheme of the present invention: the guide plate is a double-group parallel structure, the guide plate is installed horizontally at both ends of the installation groove, the installation groove is located between the guide plates on both sides to install a rotating seat, and the guide plate and the rotating seat are fixed on the base by screws. in the mounting slot of the seat.

作为本实用新型进一步方案:所述导板的上端位置滑动设有存放板,所述存放板上设有对应钢筋存放的V型槽。As a further solution of the present invention, the upper end of the guide plate is slidably provided with a storage plate, and the storage plate is provided with a V-shaped groove corresponding to the storage of steel bars.

作为本实用新型进一步方案:所述螺杆上设有第一螺纹体和第二螺纹体,第一螺纹体和第二螺纹体关于螺杆中间对称设置,第一螺纹体和第二螺纹体分别与定位座螺纹连接。As a further scheme of the present utility model: the screw is provided with a first thread body and a second thread body, the first thread body and the second thread body are symmetrically arranged about the middle of the screw rod, and the first thread body and the second thread body are respectively aligned with the positioning Seat threaded connection.

作为本实用新型进一步方案:所述滑动座两端对应导板设有滑槽,滑动座通过滑槽卡在导板上滑动连接。As a further solution of the present invention, two ends of the sliding seat are provided with sliding grooves corresponding to the guide plate, and the sliding seat is clamped on the guide plate through the sliding grooves and is slidably connected.

作为本实用新型进一步方案:所述夹持组件包括设置在定位座侧端的夹杆、套接在夹杆上的套筒、连接在套筒一侧的压板,所述夹杆上端部分设有外螺纹,夹杆位于螺纹部分连接有旋紧螺母。As a further solution of the present utility model: the clamping assembly includes a clamping rod disposed on the side end of the positioning seat, a sleeve sleeved on the clamping rod, and a pressing plate connected on one side of the sleeve, and the upper end of the clamping rod is provided with an external Threaded, the clamping rod is connected with a tightening nut at the threaded part.

作为本实用新型进一步方案:所述压板下端对应钢筋设有弧形槽。As a further solution of the present invention, the lower end of the pressing plate is provided with an arc-shaped groove corresponding to the steel bar.

与现有技术相比,本实用新型的有益效果是:该装置通过夹持座对钢筋进行固定,提高钢筋断裂后合拢的稳定性,在游标卡尺检测时碰触,不会导致明显的移动;螺杆控制夹持座移动,便于推进钢筋进行合拢;游标卡尺固定在夹持装置的上端,钢筋固定好后,下降游标卡尺对钢筋进行测量。使用该装置能够提高钢筋断后测量的稳定性,进而提高测量数据的准确性,操作简单便捷。Compared with the prior art, the beneficial effects of the utility model are: the device fixes the steel bars through the clamping seat, improves the stability of the steel bars when they are broken, and does not cause obvious movement when the vernier caliper is detected by touching them; The movement of the clamping seat is controlled to facilitate pushing the rebar to close; the vernier caliper is fixed on the upper end of the clamping device, and after the rebar is fixed, the vernier caliper is lowered to measure the rebar. The use of the device can improve the stability of the measurement after the steel bar is broken, thereby improving the accuracy of the measurement data, and the operation is simple and convenient.

附图说明Description of drawings

图1为本实用新型的结构示意图;Fig. 1 is the structural representation of the utility model;

图2为本实用新型的侧视结构示意图;Fig. 2 is the side view structure schematic diagram of the utility model;

图3为本实用新型的螺杆安装结构示意图;3 is a schematic diagram of the screw installation structure of the present invention;

图4为本实用新型的夹持座侧视结构示意图;Fig. 4 is the side view structure schematic diagram of the clamping seat of the present invention;

图5为本实用新型的游标卡尺侧视结构示意图。FIG. 5 is a schematic side view of the structure of the vernier caliper of the present invention.

具体实施方式Detailed ways

为了使本实用新型的实现技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体图示,进一步阐述本实用新型。In order to make the realization technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be further described below with reference to the specific figures.

如图1~5所示,As shown in Figures 1 to 5,

本实施例提供了一种测量钢筋伸长率装置,包括底座1、设置在底座1两端的基座2及安装在基座2上用于固定钢筋的夹持装置,所述底座1为矩形板状结构,基座2对称安装在底座1的两端,基座2的上端中间部分设有安装槽,夹持装置固定设置在安装槽内;所述夹持装置包括安装在安装槽内的导板11和转动座12、设置在导板11上滑动连接的夹持座3、与夹持座3螺纹连接的螺杆13,所述螺杆13的两端分别与转动座12转动连接,螺杆13贯穿夹持座3的下端对应的螺孔并与夹持座3螺纹连接,螺杆13位于基座2一端的转动座12的外端设有手柄14,手柄14控制螺杆13旋转;所述夹持座3设有两组并对称设置在导板11上,夹持座3包括与螺杆13螺纹连接的滑动座31、设置在滑动座31上的定位座32及设置在定位座32一侧固定钢筋4的夹持组件,定位座32中间设有V型槽用于放置钢筋4。This embodiment provides a device for measuring the elongation of steel bars, including a base 1, a base 2 disposed at both ends of the base 1, and a clamping device installed on the base 2 for fixing the steel bars, and the base 1 is a rectangular plate The base 2 is symmetrically installed on both ends of the base 1, the middle part of the upper end of the base 2 is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove; the clamping device includes a guide plate installed in the installation groove 11 and the rotating base 12, the clamping base 3 that is slidably connected to the guide plate 11, and the screw 13 that is threadedly connected to the clamping base 3. The screw hole corresponding to the lower end of the seat 3 is threadedly connected with the clamping seat 3. The outer end of the rotating seat 12 where the screw rod 13 is located at one end of the base 2 is provided with a handle 14, and the handle 14 controls the rotation of the screw rod 13; the clamping seat 3 is provided with a handle 14. There are two sets and are symmetrically arranged on the guide plate 11. The clamping seat 3 includes a sliding seat 31 threadedly connected with the screw 13, a positioning seat 32 arranged on the sliding seat 31, and a clamping seat 32 arranged on the side of the positioning seat 32 to fix the steel bar 4. assembly, a V-shaped groove is provided in the middle of the positioning seat 32 for placing the steel bar 4 .

本实施例中,转动座12的上端竖向安装有导杆21,所述导杆21上滑动连接有标尺组件,所述标尺组件包括滑动安装在导杆21上的标杆22及设置在标杆22上的游标卡尺23,标杆22两端套接在导杆21上滑动连接,标杆22套接导杆21的外端设有进行固定的旋紧螺栓24,从而限制标杆22的升降高度;所述游标卡尺23背部设有套环25,游标卡尺23通过套环25在标杆22上滑动连接。具体的,钢筋4固定在夹持座3上后,标杆22下降到合适位置,调节游标卡尺23对钢筋4进行测定,有利于提高测量精度,游标卡尺23固定后其方向与钢筋相对水平,避免人员检测时候的角度偏移导致检测数据不准。In this embodiment, a guide rod 21 is vertically installed on the upper end of the rotating base 12 , and a scale assembly is slidably connected to the guide rod 21 . On the vernier caliper 23, the two ends of the benchmark rod 22 are sleeved on the guide rod 21 for sliding connection, and the outer end of the benchmark rod 22 is sleeved on the guide rod 21 with a tightening bolt 24 for fixing, so as to limit the lifting height of the benchmark rod 22; the vernier caliper The back of 23 is provided with a collar 25 , and the vernier caliper 23 is slidably connected on the benchmark 22 through the collar 25 . Specifically, after the steel bar 4 is fixed on the clamping base 3, the benchmark 22 is lowered to an appropriate position, and the vernier caliper 23 is adjusted to measure the steel bar 4, which is beneficial to improve the measurement accuracy. The angle offset at time leads to inaccurate detection data.

本实施例中,导板11为双组并列结构,导板11横置安装在安装槽的两端,安装槽位于两侧的导板11之间安装转动座12,导板11和转动座12通过螺丝固定安装在基座2的安装槽内。导板的上端位置滑动设有存放板33,存放板33位于导板11上两组滑动座31之间,存放板33便于移动到钢筋的断裂处,所述存放板33上设有对应钢筋4存放的V型槽。螺杆13上设有第一螺纹体15和第二螺纹体16,第一螺纹体15和第二螺纹体16关于螺杆13中间对称设置,第一螺纹体15和第二螺纹体16分别与定位座32螺纹连接,螺杆13旋转时,控制夹持座3相向或者相反方向的同步运动。滑动座31两端对应导板11设有滑槽34,滑动座31通过滑槽34卡在导板11上滑动连接。In this embodiment, the guide plates 11 are of two parallel structures. The guide plates 11 are installed horizontally at both ends of the installation slot. The installation slot is located between the guide plates 11 on both sides to install the rotating seat 12. The guide plate 11 and the rotating seat 12 are fixed and installed by screws. in the mounting slot of the base 2. The upper end of the guide plate is slidably provided with a storage plate 33. The storage plate 33 is located between the two sets of sliding seats 31 on the guide plate 11. The storage plate 33 is easy to move to the breaking point of the steel bar. V-groove. The screw 13 is provided with a first threaded body 15 and a second threaded body 16, the first threaded body 15 and the second threaded body 16 are symmetrically arranged about the middle of the screw 13, and the first threaded body 15 and the second threaded body 16 are respectively connected to the positioning seat. 32 threaded connection, when the screw 13 rotates, the synchronous movement of the clamping base 3 in the opposite or opposite directions is controlled. Two ends of the sliding seat 31 are provided with sliding grooves 34 corresponding to the guide plate 11 , and the sliding seat 31 is clamped on the guide plate 11 through the sliding grooves 34 and is slidably connected.

本实施例中,夹持组件包括设置在定位座32侧端的夹杆35、套接在夹杆35上的套筒36、连接在套筒36一侧的压板37,所述夹杆35上端部分设有外螺纹,夹杆35位于螺纹部分连接有旋紧螺母38。具体的,压板37通过套筒36套接在夹杆35上滑动连接,通过旋紧螺母38转动限制套筒36的高度,从而使压板37压在钢筋4上进行固定。压板37下端对应钢筋4设有弧形槽,便于对钢筋4进行固定。In this embodiment, the clamping assembly includes a clamping rod 35 disposed on the side end of the positioning seat 32, a sleeve 36 sleeved on the clamping rod 35, and a pressing plate 37 connected to one side of the sleeve 36. The upper end of the clamping rod 35 An external thread is provided, and the clamping rod 35 is connected with a tightening nut 38 at the threaded portion. Specifically, the pressure plate 37 is slidably connected to the clamping rod 35 through the sleeve 36 , and the height of the sleeve 36 is restricted by the rotation of the tightening nut 38 , so that the pressure plate 37 is pressed on the steel bar 4 for fixing. The lower end of the pressing plate 37 is provided with an arc groove corresponding to the steel bar 4 , which is convenient for fixing the steel bar 4 .

本实用新型的工作原理为:将断裂的钢筋4分别放置在螺杆13两端的夹持座3上,钢筋4放进定位座32的V型槽内,通过调节旋紧螺母38限制压板37的高度,使其夹持钢筋4;旋转手柄14控制螺杆13上的夹持座3相向运动,钢筋4的断裂处在存放板33上合拢;标杆22下降到合适位置后,移动游标卡尺23测量钢筋4断裂后的伸长率。The working principle of the utility model is as follows: the broken steel bars 4 are placed on the clamping seats 3 at both ends of the screw rod 13 respectively, the steel bars 4 are put into the V-shaped grooves of the positioning seat 32, and the height of the pressing plate 37 is limited by adjusting the tightening nut 38 Rotate the handle 14 to control the clamping seat 3 on the screw 13 to move toward each other, and the fracture of the steel bar 4 is closed on the storage plate 33; after the benchmark 22 is lowered to the appropriate position, move the vernier caliper 23 to measure the fracture of the steel bar 4 after elongation.

以上显示和描述了本实用新型的基本原理和主要特征和本实用新型的优点。本行业的技术人员应该了解,本实用新型不受上述实施例的限制,上述实施例和说明书中描述的只是说明本实用新型的原理,在不脱离本实用新型精神和范围的前提下,本实用新型还会有各种变化和改进,这些变化和改进都落入要求保护的本实用新型范围内。本实用新型的要求保护范围由所附的权利要求书及其等效物界定。The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention The new model will also have various changes and improvements, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. The utility model provides a measure reinforcing bar elongation device, includes the base, sets up the base at base both ends and installs the clamping device who is used for fixed reinforcing bar on the base, its characterized in that: the base is of a rectangular plate-shaped structure, the bases are symmetrically arranged at two ends of the base, the middle part of the upper end of the base is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove;
the clamping device comprises a guide plate and a rotating seat which are arranged in the mounting groove, a clamping seat which is arranged on the guide plate and is in sliding connection with the guide plate, and a screw rod which is in threaded connection with the clamping seat, wherein two ends of the screw rod are respectively in rotating connection with the rotating seat, the screw rod penetrates through a screw hole corresponding to the lower end of the clamping seat and is in threaded connection with the clamping seat, a handle is arranged at the outer end of the rotating seat, which is positioned at one end of the base, of the screw rod;
the clamping seat is provided with two groups of clamping seats which are symmetrically arranged on the guide plate, each clamping seat comprises a sliding seat in threaded connection with the screw, a positioning seat arranged on the sliding seat and a clamping assembly arranged on one side of the positioning seat for fixing the steel bars, and a V-shaped groove is formed in the middle of the positioning seat and used for placing the steel bars.
2. The apparatus for measuring elongation of reinforcing bar according to claim 1, wherein: the upper end of the rotating seat is vertically provided with a guide rod, the guide rod is connected with a scale assembly in a sliding manner, the scale assembly comprises a mark post which is arranged on the guide rod in a sliding manner and a vernier caliper which is arranged on the mark post, two ends of the mark post are sleeved on the guide rod in a sliding manner, and the outer end of the mark post, which is sleeved on the guide rod, is provided with a screwing bolt for fixing; the back of the vernier caliper is provided with a lantern ring, and the vernier caliper is connected on the marker post in a sliding mode through the lantern ring.
3. The apparatus for measuring elongation of reinforcing bar according to claim 1, wherein: the guide plates are of a double-group parallel structure, the guide plates are transversely arranged at two ends of the mounting groove, the mounting groove is located between the guide plates on two sides, the rotating seat is mounted between the guide plates on two sides, and the guide plates and the rotating seat are fixedly mounted in the mounting groove of the base through screws.
4. A device for measuring the elongation of reinforcing bars according to claim 3, characterized in that: the upper end position of baffle slides and is equipped with the storage plate, be equipped with the V type groove that the corresponding reinforcing bar was deposited on the storage plate.
5. The apparatus for measuring elongation of reinforcing bar according to claim 4, wherein: the screw rod is provided with a first thread body and a second thread body, the first thread body and the second thread body are symmetrically arranged around the middle of the screw rod, and the first thread body and the second thread body are respectively in threaded connection with the positioning seat.
6. The apparatus for measuring elongation of reinforcing bar according to claim 5, wherein: the sliding seat is characterized in that sliding grooves are formed in the two ends of the sliding seat corresponding to the guide plates, and the sliding seat is clamped on the guide plates through the sliding grooves in a sliding connection mode.
7. The apparatus for measuring elongation of reinforcing bar according to claim 6, wherein: the clamping assembly comprises a clamping rod arranged at the side end of the positioning seat, a sleeve sleeved on the clamping rod, and a pressing plate connected to one side of the sleeve, wherein an external thread is arranged at the upper end part of the clamping rod, and the clamping rod is connected with a screwing nut at the threaded part.
8. The apparatus for measuring elongation of reinforcing bar according to claim 7, wherein: the lower end of the pressing plate is provided with an arc-shaped groove corresponding to the reinforcing steel bar.
CN202020812677.6U 2020-05-15 2020-05-15 Device for measuring elongation of reinforcing steel bar Expired - Fee Related CN211824175U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020812677.6U CN211824175U (en) 2020-05-15 2020-05-15 Device for measuring elongation of reinforcing steel bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020812677.6U CN211824175U (en) 2020-05-15 2020-05-15 Device for measuring elongation of reinforcing steel bar

Publications (1)

Publication Number Publication Date
CN211824175U true CN211824175U (en) 2020-10-30

Family

ID=73022220

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020812677.6U Expired - Fee Related CN211824175U (en) 2020-05-15 2020-05-15 Device for measuring elongation of reinforcing steel bar

Country Status (1)

Country Link
CN (1) CN211824175U (en)

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Granted publication date: 20201030