Measuring tool for detecting bending angle of floor reinforcing steel bar

Abstract

The utility model relates to the technical field of measuring tools, in particular to a measuring tool for detecting the bending angle of a floor reinforcing steel bar. Comprising a protractor, a fixed ruler fixedly connected to one side of the protractor and extending in the radial direction of the protractor, a movable ruler rotationally connected to the circle center of the protractor and extending in the radial direction of the protractor, and a locking assembly arranged at the circle center of the protractor and used for jointly locking or unlocking the protractor and the movable ruler. And the positioning devices are respectively arranged on the back surfaces of the fixed ruler and the movable ruler and can be fixed on a reinforcing steel bar. The measuring tool is simple in structure, convenient to operate, small in starting difficulty and not prone to being influenced by the proficiency of workers, and the accuracy of steel bar bending angle measurement is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of measuring tools, and in particular, to a measuring tool for detecting the bending angle of floor slab steel bars. Background Art

[0002] Most floor slabs are precast slabs. During production, a hollow mold is first nailed with wooden boards, steel bars are arranged in the hollow part of the mold, the hollow part is poured with concrete, and after waiting for the initial setting, the wooden boards are knocked off for demolding to complete the production. And according to the design requirements, some floor slabs need to have a certain angle, so that the corresponding steel bars also need to be bent to a certain angle.

[0003] After the steel bars are bent, it is necessary to measure the bending angle to ensure its use requirements and avoid affecting the quality of the floor slab due to the steel bars being too close or too far from the protective layer after pouring. Currently, for some small factories, measuring the bending angle of steel bars is mainly carried out by using angle measuring tools made by workers themselves, and there may be certain errors when used by different workers. Therefore, our company has made further improvements. Utility Model Content

[0004] In order to improve the accuracy of measuring the bending angle of steel bars, this application provides a measuring tool for detecting the bending angle of floor slab steel bars.

[0005] A measuring tool for detecting the bending angle of floor slab steel bars includes a protractor, a fixed ruler fixedly connected to one side of the protractor and extending radially along the protractor, a movable ruler rotatably connected to the center of the protractor and extending radially along the protractor, a locking assembly arranged at the center of the protractor for locking or unlocking the protractor and the movable ruler together, and positioning devices respectively installed on the backs of the fixed ruler and the movable ruler, and the positioning devices can be fixed on the steel bars.

[0006] By adopting the above technical solution, when measuring the bending angle of the steel bars, the locking is released through the locking assembly so that the movable ruler can rotate freely, and then the fixed ruler and the movable ruler are respectively fixed on two steel bar segments of the steel bar to be measured through the positioning devices, and then locked through the locking assembly. At this time, the actual bending angle of the steel bar can be read through the protractor. Compared with the traditional measuring tool, the measuring tool in this application has a simple structure, is easy to operate, has a low learning difficulty, and is not easily affected by the proficiency of workers, greatly improving the accuracy of measuring the bending angle of steel bars.

[0007] Preferably, the locking assembly includes a sleeve, a supporting ring fixedly connected to one end of the sleeve and flush with the end face of the sleeve, a screw rod threadedly connected to the sleeve, and a nut fixedly connected to the free end of the screw rod. An installation hole is machined at the center of the protractor, and a through hole is machined on the movable ruler. The protractor and the movable ruler are sleeved on the screw rod from top to bottom and are located between the supporting ring and the nut.

[0008] By adopting the above technical solution, when the nut is tightened, the protractor and the movable ruler are clamped and fixed; when adjustment is needed, loosen the nut and then rotate the movable ruler.

[0009] Preferably, a U-shaped limiting clip is fixedly connected to the end of the sleeve away from the supporting ring, and the opening end of the U-shaped limiting clip faces away from the supporting ring.

[0010] By adopting the above technical solution, during measurement, install the U-shaped limiting clip at the bending part of the steel bar to be measured. In this way, during the process of rotating the nut, the sleeve will not rotate along with it, and only one hand is needed for operation.

[0011] Preferably, the positioning device includes a mounting plate fixedly connected to the back of the fixed ruler or the movable ruler, vertical plates symmetrically fixedly connected to both sides of the mounting plate, and positioning parts respectively arranged on the two vertical plates for clamping and fixing. The channel formed between the two vertical plates and the mounting plate is arranged along the length direction of the fixed ruler or the movable ruler.

[0012] Preferably, the positioning part includes a threaded rod vertically passing through the vertical plate and threadedly connected to the vertical plate, an arc-shaped plate rotatably connected to one end of the threaded rod, and a handle fixedly connected to the end of the threaded rod away from the arc-shaped plate. The arc-shaped plate is located between the two vertical plates.

[0013] By adopting the above technical solution, during use, rotate the handle to make the arc-shaped plate move towards the steel bar until the two arc-shaped plates clamp the steel bar to achieve fixation. The setting of the arc-shaped plate is more conforming to the shape of the steel bar and can greatly increase the contact area.

[0014] Preferably, an auxiliary ruler is further arranged between the movable ruler and the protractor. The auxiliary ruler is rotatably sleeved on the screw rod, and the length of the auxiliary ruler is less than that of the movable ruler.

[0015] By adopting the above technical solution, the setting of the auxiliary ruler can measure the difference between the preset bending angle and the actual bending angle, so as to further adjust the steel bar to meet the construction requirements.

[0016] Preferably, it further includes a sliding sleeve sleeved on the movable ruler and the auxiliary ruler. A waist-shaped groove extending along the length direction of the movable ruler is processed on the sliding sleeve, and a limiting block extending into the waist-shaped groove is fixedly connected to the front surface of the movable ruler near the end. When the sliding sleeve is moved towards the protractor, the sliding sleeve simultaneously sleevs the movable ruler and the auxiliary ruler for limiting; when the sliding sleeve is moved away from the protractor, the auxiliary ruler can rotate freely.

[0017] By adopting the above technical solution, when the sliding sleeve is moved towards the protractor, the sliding sleeve simultaneously sleevs the movable ruler and the auxiliary ruler for limiting; when the sliding sleeve is moved away from the protractor, the limit on the auxiliary ruler is released, enabling it to rotate freely.

[0018] Preferably, a first marking line pointing to 0 degrees of the protractor is provided in the middle of the fixed ruler, a second marking line pointing to the protractor is provided in the middle of the movable ruler, and a third marking line pointing to the protractor is provided in the middle of the auxiliary ruler.

[0019] By adopting the above technical solution, the setting of the first marking line, the second marking line and the third marking line can facilitate the staff to read the values more accurately.

[0020] Preferably, the protractor is a 360-degree protractor.

[0021] In summary, the present application includes the following beneficial technical effects:

[0022] 1. When using the measuring tool in the present application, the locking is released through the locking assembly, so that the movable ruler can rotate freely. Then, the fixed ruler and the movable ruler are respectively fixed on two reinforcing bar segments of the reinforcing bar to be measured through the positioning device, and then locked through the locking assembly. At this time, the actual bending angle of the reinforcing bar can be read through the protractor. Compared with the traditional measuring tool, the measuring tool in the present application has a simple structure, is easy to operate, has a low learning curve, and is not easily affected by the proficiency of workers, greatly improving the accuracy of measuring the bending angle of the reinforcing bar.

[0023] 2. The setting of the auxiliary ruler can cooperate with the protractor and the fixed ruler to measure the difference between the preset bending angle and the actual bending angle, so as to further adjust the reinforcing bar to meet the construction requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the measuring tool in the embodiment of the present application;

[0025] Figure 2 is the structural schematic diagram showing the locking assembly in the locked state;

[0026] Figure 3 is the structural schematic diagram showing the sliding sleeve after unlocking;

[0027] Figure 4 It is a schematic diagram showing the overall structure of the sliding sleeve;

[0028] Figure 5 It is a schematic diagram showing the overall structure of the positioning device.

[0029] Explanation of reference numerals: 1, protractor; 2, fixed ruler; 3, movable ruler; 31, limit block; 4, auxiliary ruler; 5, locking assembly; 51, sleeve; 52, supporting ring; 53, screw rod; 54, nut; 55, U-shaped limit card; 6, positioning device; 61, mounting plate; 62, vertical plate; 63, threaded rod; 64, arc plate; 65, handle; 7, sliding sleeve; 71, waist-shaped groove. Detailed implementation manners

[0030] The following will further elaborate on this application in conjunction with the attached Figures 1-5 drawings.

[0031] The embodiment of this application discloses a measuring tool for detecting the bending angle of floor steel bars. Referring to Figure 1 , the measuring tool includes a protractor 1, a fixed ruler 2 fixedly connected to one side of the protractor 1, a movable ruler 3 rotatably connected to the center of the protractor 1, an auxiliary ruler 4 rotatably connected to the center of the protractor 1 and located between the protractor 1 and the movable ruler 3, a locking assembly 5 provided at the center of the protractor 1 for locking or unlocking the protractor 1, the auxiliary ruler 4 and the movable ruler 3 together, and positioning devices 6 respectively installed on the back surfaces of the fixed ruler 2 and the movable ruler 3.

[0032] The protractor 1 is a 360-degree protractor with scales from 0 degrees to 360 degrees. There are multiple long scale lines radiating from the center of the protractor 1 on its plate surface, with a difference of 10 degrees between adjacent long scale lines, and there are also short scale lines of 1 degree subdivided between adjacent long scale lines, but they are not shown in the figure; the fixed ruler 2 is integrally formed on the circumferential surface of the protractor 1 and extends along the radial direction of the protractor 1. A first marked line with an arrow is provided in the middle of the fixed ruler 2, and the first marked line points to 0 degrees of the protractor 1; the movable ruler 3 also extends along the radial direction of the protractor 1, and a second marked line with an arrow is provided in the middle of it. The second marked line points to the protractor 1 and points to different scales according to different rotation angles; the length of the auxiliary ruler 4 is less than that of the movable ruler 3, and a third marked line with an arrow is provided in the middle of the auxiliary ruler 4. The third marked line points to the protractor 1 and points to different scales according to different rotation angles; the protractor 1, the fixed ruler 2, the movable ruler 3 and the auxiliary ruler 4 are all made of transparent materials for convenient observation.

[0033] Referring to Figure 1 and Figure 2, the locking assembly 5 includes a sleeve 51 with a hollow interior and an open end, a supporting ring 52 fixedly connected to the open end of the sleeve 51 and flush with the end face of the sleeve 51, a screw rod 53 threadedly connected to the sleeve 51, and a nut 54 fixedly connected to the free end of the screw rod 53. An installation hole is machined at the center of the protractor 1, and through holes are machined at positions near one end of the movable ruler 3 and the auxiliary ruler 4. The protractor 1, the auxiliary ruler 4, and the movable ruler 3 are sleeved on the screw rod 53 in sequence from top to bottom and are located between the supporting ring 52 and the nut 54. When the nut 54 is tightened, the protractor 1, the auxiliary ruler 4, and the movable ruler 3 are clamped and fixed. When adjustment is needed, loosen the nut 54 and then rotate the movable ruler 3 and the auxiliary ruler 4.

[0034] To facilitate the operation of the staff, a U-shaped limit clamp 55 is fixedly connected to the end of the sleeve 51 away from the supporting ring 52. The open end of the U-shaped limit clamp 55 faces away from the supporting ring 52. During measurement, install the U-shaped limit clamp 55 at the bending position of the steel bar. In this way, during the process of rotating the nut 54, the sleeve 51 will not rotate along with it, and only one hand is needed for operation.

[0035] Under normal circumstances, if only the actual bending angle of the steel bar needs to be measured, only the protractor 1 needs to cooperate with the fixed ruler 2 and the movable ruler 3 for operation. If further adjustment of the steel bar is required according to the difference between the preset bending angle and the actual bending angle, the auxiliary ruler 4 needs to be used.

[0036] Refer to Figure 3 and Figure 4 , to prevent the auxiliary ruler 4 from affecting the operation of the movable ruler 3 in the non-use state, a sliding sleeve 7 is sleeved on the movable ruler 3 and the auxiliary ruler 4. The interior of the sliding sleeve 7 is hollow and both ends are open. A waist-shaped groove 71 extending along the length direction of the movable ruler 3 is machined on one side wall of the sliding sleeve 7. A limit block 31 extending into the waist-shaped groove 71 is fixedly connected to the front surface of the movable ruler 3 near the end. The settings of the limit block 31 and the waist-shaped groove 71 are mainly used for limiting and guiding.

[0037] When moving the sliding sleeve 7 towards the direction close to the protractor 1, the sliding sleeve 7 simultaneously sleevs the movable ruler 3 and the auxiliary ruler 4 for limiting. When moving the sliding sleeve 7 towards the direction away from the protractor 1, the limit on the auxiliary ruler 4 is released, enabling it to rotate freely.

[0038] Refer to Figure 3 and Figure 5, the positioning device 6 is mainly used to fix the measuring tool on the steel bar for measurement. The positioning device 6 includes a mounting plate 61 fixedly connected to the back of the fixed ruler 2 or the movable ruler 3, vertical plates 62 symmetrically fixedly connected to both sides of the mounting plate 61, and positioning parts respectively arranged on the two vertical plates 62 for clamping and fixing. A U-shaped channel is formed between the two vertical plates 62 and the mounting plate 61, and this channel is arranged along the length direction of the fixed ruler 2 or the movable ruler 3. The positioning part includes a threaded rod 63 vertically passing through the vertical plate 62 and threadedly connected to the vertical plate 62, an arc-shaped plate 64 rotatably connected to one end of the threaded rod 63, and a handle 65 fixedly connected to the end of the threaded rod 63 away from the arc-shaped plate 64. The arc-shaped plate 64 is located between the two vertical plates 62.

[0039] During use, rotate the handle 65 to make the arc-shaped plate 64 move towards the steel bar until the two arc-shaped plates 64 clamp the steel bar to achieve fixation. The setting of the arc-shaped plate 64 fits the shape of the steel bar better and can greatly increase the contact area.

[0040] The implementation principle of the embodiment of this application is as follows: Before measuring the bending angle of the steel bar, a center line can be drawn in the middle of the surface of the steel bar. During measurement, loosen the nut 54 of the locking assembly 5 so that the movable ruler 3 can rotate freely; install the U-shaped limit clip 55 at the bending part of the steel bar, adjust the position of the fixed ruler 2 to make the first marking line coincide with the center line on one of the steel bar segments, and through the positioning device 6, that is, rotate the handle 65 to make the arc-shaped plate 64 move towards the steel bar until the two arc-shaped plates 64 clamp the steel bar to achieve fixation; adjust the position of the movable ruler 3 to make the second marking line coincide with the center line on the other steel bar segment, and also fix it through the positioning device 6; tighten the nut 54 of the locking assembly 5. At this time, the actual bending angle of the steel bar can be read through the protractor 1.

[0041] When it is necessary to measure the difference between the actual bending angle and the preset bending angle of the steel bar, move the sliding sleeve 7 in the direction away from the protractor 1 to release the limit on the auxiliary ruler 4, and rotate the auxiliary ruler 4 to the preset bending angle. At this time, two groups of values can be read through the protractor 1, and the final difference can be obtained.

[0042] Compared with traditional measuring tools, the measuring tool in this application has a simple structure, is easy to operate, has a low learning difficulty, and is not easily affected by the proficiency of workers, greatly improving the accuracy of measuring the bending angle of steel bars.

[0043] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A measuring tool for detecting the bending angle of floor slab steel bars, characterized in that, The invention comprises a protractor (1), a fixed ruler (2) fixedly connected to one side of the protractor (1) and extending radially along the protractor (1), a movable ruler (3) rotatably connected to the center of the protractor (1) and extending radially along the protractor (1), a locking assembly (5) arranged at the center of the protractor (1) and used for locking or unlocking the protractor (1) and the movable ruler (3), and positioning devices (6) respectively installed on the back of the fixed ruler (2) and the movable ruler (3), wherein the positioning devices (6) can be fixed on a steel bar.

2. The measuring tool for detecting the bending angle of floor slab steel bars according to claim 1, wherein: The locking assembly (5) comprises a sleeve (51), a supporting ring (52) fixedly connected to one end of the sleeve (51) and flush with the end surface of the sleeve (51), a screw (53) threadedly connected to the sleeve (51), and a nut (54) fixedly connected to the free end of the screw (53). A mounting hole is machined at the center of the protractor (1), and a through hole is machined on the movable ruler (3). The protractor (1) and the movable ruler (3) are sequentially mounted on the screw (53) from top to bottom and are located between the supporting ring (52) and the nut (54).

3. The measuring tool for detecting the bending angle of floor slab steel bars according to claim 2, characterized in that: One end of the sleeve (51) away from the supporting ring (52) is fixedly connected with a U-shaped limiting clamp (55), and the open end of the U-shaped limiting clamp (55) is arranged away from the supporting ring (52).

4. A measuring tool for detecting the bending angle of floor slab steel bars according to claim 1, characterized in that: The positioning device (6) comprises a mounting plate (61) fixedly connected to the back of the fixed ruler (2) or the movable ruler (3), vertical plates (62) symmetrically fixedly connected to both sides of the mounting plate (61), and positioning parts respectively arranged on the two vertical plates (62) for clamping and fixing, and a channel formed between the two vertical plates (62) and the mounting plate (61) is arranged along the length direction of the fixed ruler (2) or the movable ruler (3).

5. The measuring tool for detecting the bending angle of floor slab steel bars according to claim 4, characterized in that: The positioning portion comprises a threaded rod (63) vertically passing through the vertical plate (62) and threadedly connected to the vertical plate (62), an arc plate (64) rotatably connected to one end of the threaded rod (63), and a handle (65) fixedly connected to one end of the threaded rod (63) away from the arc plate (64), and the arc plate (64) is located between the two vertical plates (62).

6. The measuring tool for detecting the bending angle of floor slab steel bars according to claim 2, characterized in that: An auxiliary ruler (4) is also provided between the movable ruler (3) and the protractor (1); the auxiliary ruler (4) is rotatably sleeved on the screw rod (53); and the length of the auxiliary ruler (4) is smaller than that of the movable ruler (3).

7. A measuring tool for detecting the bending angle of floor slab steel bars according to claim 6, characterized in that: The invention also comprises a sliding sleeve (7) sleeved on the movable ruler (3) and the auxiliary ruler (4); the sliding sleeve (7) is processed with a waist-shaped groove (71) extending along the length direction of the movable ruler (3); a limit block (31) extending into the waist-shaped groove (71) is fixedly connected to the front of the movable ruler (3) and close to the end; when the sliding sleeve (7) is moved in a direction close to the protractor (1), the sliding sleeve (7) simultaneously sleeves the movable ruler (3) and the auxiliary ruler (4) to limit the position; when the sliding sleeve (7) is moved in a direction away from the protractor (1), the auxiliary ruler (4) can rotate freely.

8. A measuring tool for detecting the bending angle of floor slab steel bars according to claim 7, characterized in that: A first scale line pointing to 0 degrees of the protractor (1) is provided in the middle of the fixed ruler (2), a second scale line pointing to the protractor (1) is provided in the middle of the movable ruler (3), and a third scale line pointing to the protractor (1) is provided in the middle of the auxiliary ruler (4).

9. A measuring tool for detecting the bending angle of floor slab steel bars according to claim 1, characterized in that: The protractor (1) is a 360-degree protractor.

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