Measuring device for steel bar hook

Abstract

The invention relates to the technical field of building measuring equipment, and provides a reinforcing steel bar hook measuring device, which comprises a fixed ruler, a movable ruler and an angle ruler, and is characterized in that one end of the fixed ruler is provided with a fitting part with an arc-shaped structure; one end of the movable ruler is provided with a rotating part of an arc structure, the rotating part is rotationally connected with the attaching part so that the movable ruler can rotate relative to the fixed ruler, the attaching part and the rotating part are concentrically arranged, and the diameter of the outer wall face of the rotating part is equal to that of the outer wall face of the attaching part; one part of the angle ruler penetrates through the movable ruler and is connected with the fixed ruler, and the other part of the angle ruler is located on the movable ruler. Through the arrangement of the fixed ruler, the movable ruler, the angle ruler and the locking assembly, when the steel bar bending section is measured, the steel bar bending section is attached to the steel bar bending part for measurement, the tangent point of the bending section and the straight section can be accurately found, meanwhile, the steel bar bending arc inner diameter, the bending angle and the straight section length are measured, and the measurement accuracy is improved. And the measurement precision and the measurement efficiency can be obviously improved.

Description

[0001] The invention relates to the technical field of building measurement equipment, and in particular to a measurement device for a steel bar hook. Background Art

[0002] In the construction industry, steel bars are often bent using a steel bar bending machine. Since a large number of steel bars need to be processed, when the bending rollers in the steel bar bending machine are deformed or deviated, the bending diameter of the steel bar will also deviate. Therefore, it is necessary to measure and verify the bending diameter and straight section length of the steel bar.

[0003] In the related art, a typical measurement method is to directly measure the diameter of the bending roller in the steel bar bending machine as the inner diameter of the steel bar bending arc by using a vernier caliper when measuring the inner diameter of the steel bar bending arc; when measuring the length of the straight section of the steel bar hook, the intersection point of the steel bar hook arc and the straight section is estimated by human eyes. Since the intersection point of the arc and the straight section cannot be determined, the length of the straight section cannot be accurately measured; and when the bending roller is deformed, the measured bending roller diameter is used to represent the inner diameter of the steel bar bending arc, which will introduce uncertain errors.

[0004] Another typical measurement method is to directly measure the inner diameter of the processed steel bar bend, and then measure the length of the straight section of the hook. When directly measuring the inner diameter of the processed steel bar bend, it is difficult to accurately measure the inner diameter of the steel bar bend because the center of the steel bar bend cannot be found; similarly, because the tangent point of the bend and the straight section cannot be accurately determined, the length of the straight section of the hook cannot be accurately measured. Summary of the invention

[0005] The invention provides a measuring device for a steel bar hook, which is used to solve the defects of large measurement error, low accuracy and low working efficiency in the prior art, and realizes accurate measurement of the steel bar hook.

[0006] The present invention provides a measuring device for a steel bar hook, comprising: a fixed ruler, a movable ruler and an angle ruler, wherein one end of the fixed ruler is provided with a fitting portion with an arc structure; one end of the movable ruler is provided with a rotating portion with an arc structure, the rotating portion is rotatably connected with the fitting portion, so that the movable ruler can rotate relative to the fixed ruler, and the fitting portion is concentrically arranged with the rotating portion, and the outer wall diameter of the rotating portion is equal to the outer wall diameter of the fitting portion; a part of the angle ruler passes through the movable ruler and is connected with the fixed ruler, and the other part of the angle ruler is located on the movable ruler, wherein the outer side of the movable ruler is provided with a straight edge, the straight edge is tangent to the arc edge of the rotating portion, and a scale is provided on the straight edge for measuring a straight length; the part of the angle ruler located on the movable ruler is provided with a scale for measuring an angle.

[0007] According to the measuring device for steel bar hooks provided by the present invention, a locking assembly is further provided on the fixed ruler, and the locking assembly is used to lock the movable ruler to the fixed ruler after the movable ruler is rotated to a predetermined angle.

[0008] According to the measuring device for steel bar hooks provided by the present invention, an arc groove is provided on the movable ruler at the position of the rotating part, the locking assembly is arranged in the arc groove, and the arc groove is arranged concentrically with the rotating part.

[0009] According to the measuring device for steel bar hooks provided by the present invention, the arc angle of the arc-shaped groove is greater than or equal to 180 degrees.

[0010] According to the measuring device for steel bar bend hooks provided by the present invention, the locking assembly includes a fixing screw and a locking nut, one end of the fixing screw is connected to the fixed ruler, the other end of the fixing screw passes through the arc groove and extends freely, and the locking nut is arranged at the freely extending end of the fixing screw.

[0011] According to the measuring device for steel bar hooks provided by the present invention, the angle ruler comprises a dial and a connecting shaft, the dial is arranged at one end of the connecting shaft, and the other end of the connecting shaft passes through the movable ruler and is connected to the fixed ruler.

[0012] According to the measuring device for steel bar hooks provided by the present invention, the connecting shaft is threadedly connected to the fixed ruler.

[0013] According to the measuring device for the steel bar hook provided by the present invention, an annular mounting groove is provided at the connecting position of the dial and the connecting shaft, a preload spring is provided in the mounting groove, the preload spring is sleeved on the connecting shaft, and one end of the preload spring abuts against the dial, and the other end of the preload spring abuts against the movable ruler.

[0014] According to the measuring device for steel bar hooks provided by the present invention, a limiting groove is provided at the end of the connecting shaft located at one end of the scale plate.

[0015] According to the measuring device for steel bar hooks provided by the present invention, a specification module is further provided on the fixed ruler, and the specification module is used to prompt the measurement specifications.

[0016] The present invention provides a measuring device for a steel bar hook. By arranging a fixed ruler, a movable ruler, an angle ruler and a locking assembly, when measuring a steel bar bending section, the ruler is fitted with the steel bar bending part for measurement, and the tangent point of the bending section and the straight section can be accurately found. At the same time, the inner diameter of the steel bar bending arc, the bending angle and the length of the straight section can be measured, which can significantly improve the measurement accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the top structure of the measuring device provided by the present invention.

[0019] Figure 2 It is a schematic diagram of the axial cross-sectional structure of the measuring device provided by the present invention.

[0020] Figure 3 It is a schematic diagram of the measurement structure of the measurement device provided by the present invention.

[0021] Figure 4 It is a structural schematic diagram of a movable ruler in the measuring device provided by the present invention.

[0022] Figure 5 It is a structural schematic diagram of a fixed ruler in the measuring device provided by the present invention.

[0023] Figure 6 It is a structural schematic diagram of the angle ruler in the measuring device provided by the present invention.

[0024] Figure 7 It is a flow chart of the measuring method provided by the present invention.

[0025] Figure 8 It is a schematic diagram of the bending angle and straight segment length specified in the relevant standards.

[0026] Reference numerals: 10. Fixed ruler; 11. Connecting hole; 12. Screw hole; 13. Specification module; 20. Movable ruler; 21. Straight edge; 22. Arc groove; 23. First identification module; 24. Notch; 30. Angle ruler; 31. Dial; 311. Second identification module; 312. Mounting groove; 32. Connecting shaft; 321. Limiting groove; 40. Locking assembly; 41. Fixed screw; 42. Locking nut; 50. Preload spring; 60. Steel bar to be tested. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] The current national standards GB 50010-2010 (2015 edition) and GB 50204-2015 stipulate the inner diameter of the steel bar hook and the length of the straight section after bending. The inspection method used is measurement with a ruler. The standard provisions are as follows: like Figure 8 As shown in the GB 50010-2010 "Code for Design of Concrete Structures" (2015 edition), when the end of the longitudinal tension ordinary steel bar is anchored with a hook, the 90° hook requires a 90° hook at the end, an inner diameter of the hook of 4d, and a straight section length of 12d after bending (d is the diameter of the steel bar); the 135° hook requires a 135° hook at the end, an inner diameter of the hook of 4d, and a straight section length of 5d after bending.

[0033] GB 50204-2015 "Concrete Structure Engineering Construction Quality Acceptance Code" stipulates "measure with a ruler", but does not further explain "what ruler to use and how to measure". It is difficult to achieve accurate measurement in related measurement methods.

[0034] In view of the problems in the related technology, the following Figure 1-Figure 3 The present invention provides a measuring device for a steel bar hook, comprising a fixed ruler 10, a movable ruler 20 and an angle ruler 30. One end of the fixed ruler 10 has a fitting portion with an arc-shaped structure; one end of the movable ruler 20 has a rotating portion with an arc-shaped structure, the rotating portion is rotatably connected to the fitting portion, so that the movable ruler 20 can rotate relative to the fixed ruler 10, and the fitting portion and the rotating portion are concentrically arranged, and the outer wall diameter of the rotating portion is equal to the outer wall diameter of the fitting portion; a part of the angle ruler 30 passes through the movable ruler 20 and is connected to the fixed ruler 10, and the other part of the angle ruler 30 is located on the movable ruler 20. When measuring and verifying the steel bar hook-shaped structure, it is critical to achieve accurate measurement of the straight section and the curved section. In this embodiment, by setting one end of the fixed ruler 10 and the movable ruler 20 as an arc-shaped structure, they can fit with the arc-shaped fitting portion during measurement, thereby achieving accurate measurement of the curved section and the straight section.

[0035] It is understandable that when measuring the steel bar hook, the measurement value is obtained by visual observation, mainly because the intersection of the arc segment and the straight segment is often obtained by visual observation. This method has a large error, and the measurement data between different measurement personnel may be significantly different. Therefore, standardized operations and standardized measurements are required to improve the accuracy of the measurement. In this embodiment, a fitting portion is provided at one end of the fixed ruler 10, and a movable ruler 20 and an angle ruler 30 are connected to the fitting portion, so that when measuring, the curved segment and the straight segment can be clearly shown by the scale mark on the movable ruler 20, and the measurement is directly performed by the scale on the straight edge 21, thereby improving the accuracy and efficiency of the measurement.

[0036] The movable ruler 20 has a straight edge 21 on the outside, which is tangent to the arc edge of the rotating part. The straight edge 21 is provided with a scale for measuring the straight length. The angle ruler 30 on the movable ruler 20 is provided with a scale for measuring the angle. A first identification module 23 is provided at the starting position of the scale on the straight edge 21. The first identification module 23 can clearly identify the tangent point position to achieve the measurement of the straight segment of the steel bar hook.

[0037] Specifically, when measuring, the steel bar hook is fitted with the fitting part. At this time, the bending angle can be verified through the scales on the angle ruler 30, and at the same time, the scales on the movable ruler 20 can be used to directly verify whether the straight line segment meets the standard requirements, thereby improving the accuracy of the measurement and realizing standardized measurement.

[0038] In this embodiment, the rotating part and the fitting part are concentric, and the outer diameter of the outer wall surface of the rotating part is the same as the outer diameter of the outer wall surface of the fitting part, so that the outer wall surface of the arcuate part of the rotating part and the arcuate part of the fitting part are aligned, so that when measuring the fitting of the steel bar, the movable ruler 20 is rotated so that the straight edge 21 part can be directly fitted with the straight section of the steel bar for measurement, thereby improving the convenience and accuracy of the measurement readings.

[0039] In the specific configuration, the fixed ruler 10 is a long block structure as a whole, wherein a semicircular arc-shaped fitting portion is provided at one end of the fixed ruler 10, and the outer wall surface of the fitting portion is a semicircular arc structure, such a structure can be fitted with the inner arc edge of the steel bar hook, and achieve fast and accurate measurement. Further, the movable ruler 20 is a long strip structure as a whole, and its rotating portion is a fan-shaped structure formed by a 3 / 4 circle, one side of the straight edge 21 is tangent to the side wall surface outside the rotating portion, and a push side is formed opposite to one side of the straight edge 21, and the push side is connected to the fan-shaped structure, so that when measuring, the push side can be pushed to realize the movable ruler 20 rotating around the center position of the rotating portion.

[0040] Furthermore, the rotation connection structure of the movable ruler 20 and the fixed ruler 10 is arranged on a concentric axis shared by the rotating part and the fitting part, so that the movable ruler 20 rotates around the concentric axis when rotating.

[0041] In a specific application, the pushing side is an overall linear structure, and a notch portion 24 is provided on one side of the pushing side. The notch portion 24 facilitates manual force application, making the rotation of the movable ruler 20 more convenient.

[0042] According to an embodiment provided by the present invention, a locking assembly 40 is further provided on the fixed ruler 10, and the locking assembly 40 is used to lock the movable ruler 20 to the fixed ruler 10 after the movable ruler 20 is rotated to a predetermined angle. When measuring, the movable ruler 20 is rotated so that one side of the straight edge 21 of the movable ruler 20 fits the straight section of the steel bar 60 to be measured. In this embodiment, the locking assembly 40 facilitates measurement, makes the measurement process more stable, and improves the accuracy and efficiency of the measurement.

[0043] It can be understood that the method of fitting measurement can facilitate reading and reduce errors caused by reading. After fitting, the position of the movable ruler 20 can be locked by the locking component 40, and then the measurement data can be read, thereby achieving efficient measurement.

[0044] For example, when measuring a large number of workpieces, multiple rechecks are required. At this time, the movable ruler 20 can be locked after a successful recheck, and the movable ruler 20 is in the correct size position. Then the workpieces that need to be rechecked are fitted. When they can be fully fitted, it means that the bending angle of the workpiece is accurate, and no further data reading is required. Only the length dimension is read to realize the recheck, and the accuracy of the recheck can be guaranteed, thereby improving the efficiency and accuracy of the recheck.

[0045] According to the embodiment provided by the present invention, an arc groove 22 is provided on the movable ruler 20 at the rotating part, and the locking assembly 40 is provided in the arc groove 22, and the arc groove 22 is provided concentrically with the rotating part. The arc groove 22 has a certain curvature, and when the movable ruler 20 rotates to a certain extent, it can be locked by the locking assembly 40, so that the stability of the movable ruler 20 during the measurement process can be maintained.

[0046] In the specific configuration, the arc of the arc groove 22 is greater than or equal to 180 degrees. The locking assembly 40 is located in the arc groove 22 and is locked by cooperating with the movable ruler 20. During the rotation of the movable ruler 20, the size of the arc can limit the range of the rotation angle. In this embodiment, the movable ruler 20 can be applied to the measurement of all bending arcs by limiting the angle.

[0047] It can be understood that the locking assembly 40 is initially located at one end of the arc groove 22, at which time the movable scale 20 is entirely parallel to the fixed scale 10, and during measurement, the movable scale 20 rotates so that the movable scale 20 and the fixed scale 10 form a certain angle, thereby achieving measurement. In this embodiment, by limiting the arc of the arc groove 22 to be greater than 180 degrees, it is possible to measure workpieces in all angle ranges, and common workpiece bending angles are 90°, 135° and 180°, which are obviously within the measurement range of this embodiment.

[0048] In a specific embodiment, the locking assembly 40 includes a fixed screw 41 and a locking nut 42. One end of the fixed screw 41 is connected to the fixed ruler 10, and the other end of the fixed screw 41 freely extends through the arc groove 22. The locking nut 42 is arranged at the freely extending end of the fixed screw 41. When the locking assembly 40 is in an unlocked state, the movable ruler 20 can rotate freely. When the locking assembly 40 is in a locked state, the rotation of the movable ruler 20 can be restricted, so that the movable ruler 20 is at a set angle. In this embodiment, the locking of the movable ruler 20 can be achieved by the threaded cooperation of the locking nut 42 and the screw, so that the movable ruler 20 is located at a specific position, making it more stable during the measurement process and easy to read.

[0049] In the specific setting, a screw hole 12 is provided on the fixed ruler 10, and the position of the screw hole 12 is located below the arc groove 22, and a thread is provided in the screw hole 12. When the fixed screw 41 is connected, one end thereof extends through the arc groove 22 into the screw hole 12 to be threadedly connected, and the other end extends out of the arc groove 22 and is connected to the locking nut 42, and the locking nut 42 is threadedly connected with the screw, and the locking nut 42 can be rotated to abut against the movable ruler 20, thereby locking the movable ruler 20 and ensuring the stability of the movable ruler 20 during measurement.

[0050] In a specific application, the width of the arc groove 22 is slightly larger than the width of the fixed screw 41, which facilitates the rotation of the movable ruler 20 and avoids interference between the movable ruler 20 and the fixed screw 41 during the rotation process. The arc of the arc groove 22 is 180 degrees, and the angle between the starting end and the end of the arc groove 22 and the vertical reference axis is 45 degrees.

[0051] According to an embodiment provided by the present invention, the angle ruler 30 includes a scale plate 31 and a connecting shaft 32, the scale plate 31 is arranged at one end of the connecting shaft 32, and the other end of the connecting shaft 32 passes through the movable ruler 20 and is connected to the fixed ruler 10. When measuring, it is necessary to ensure that the movable ruler 20 can rotate. In this embodiment, the angle ruler 30 can be stably connected through the setting of the connecting shaft 32, and the movable ruler 20 can rotate around the connecting shaft 32, which improves the stability of the connection of the angle ruler 30 on the one hand, and enables the movable ruler 20 to rotate around the connecting shaft 32 on the other hand, thereby improving the stability of the rotation of the movable ruler 20.

[0052] In the specific configuration, a through hole is processed at the circular position of the rotating part on the movable ruler 20, and a connecting hole 11 is processed at the center position of the fitting part on the fixed ruler 10. The through hole and the connecting hole 11 are concentrically arranged, and the apertures of the through hole and the connecting hole 11 are the same. Among them, an internal thread is provided in the aperture of the connecting hole 11, and an external thread is processed on the end of the connecting shaft 32, which is threadedly connected with the connecting hole 11 to realize the connection between the connecting shaft 32 and the fixed ruler 10.

[0053] Specifically, the outer thread area on the connecting shaft 32 is larger than the thickness of the fixed ruler 10, so that the connecting shaft 32 can rotate in the connecting hole 11 of the fixed ruler 10, and the movable ruler 20 can be pre-tightened and loosened by rotating up and down. The connecting shaft 32 passes through the through hole and is threadedly connected to the connecting hole 11. When the movable ruler 20 rotates, it rotates around the connecting shaft 32, making the rotation smoother and more stable. The threaded connection method can also realize the rotation of the dial 31, so that it can be adjusted during measurement, so that the dial 31 can be aligned for angle measurement.

[0054] In a specific implementation, a circle of the scale plate 31 is provided with scales, and a second identification module 311 is provided on the scale plate 31, and the second identification module 311 can clearly indicate the position of the identification. Figure 1 As shown, at the beginning of the measurement, the second identification module 311 and the first identification module 23 on the movable ruler 20 are aligned on the same straight line, so that the second identification module 311 can face the upper and lower tangent points of the fixed ruler 10, thereby improving the measurement accuracy during angle measurement.

[0055] According to an embodiment provided by the present invention, an annular mounting groove 312 is provided at the connection position between the scale plate 31 and the connecting shaft 32, and a preload spring 50 is provided in the mounting groove 312. The preload spring 50 is sleeved on the connecting shaft 32, and one end of the preload spring 50 abuts against the scale plate 31, and the other end of the preload spring 50 abuts against the movable ruler 20. If the movable ruler 20 shakes up and down during the rotation process, the measurement efficiency and accuracy will be affected to a certain extent. In this embodiment, the preload spring 50 can be provided to apply a preload force to the movable ruler 20, so that it is more stable during the rotation process, and the measurement efficiency and measurement accuracy are improved.

[0056] It is understandable that when measuring, the movable ruler 20 needs to be rotated to a certain angle. In this embodiment, the preload spring 50 is used to provide a preload force during the rotation of the movable ruler 20, so that the rotation is more stable. The preload spring 50 can preload the movable plate, which facilitates the locking of the locking assembly 40 and facilitates a quick locking operation.

[0057] In the specific setting, a limiting groove 321 is provided at the end of the connecting shaft 32 at one end of the dial 31. The setting of the limiting groove 321 can facilitate the rotation of the tool, so that the angle ruler 30 can be easily rotated by an external tool when it is necessary to rotate it. Specifically, during the measurement process, the angle ruler 30 needs to be tightened so that the second identification module 311 on the angle ruler 30 is located at a specified position. At this time, it is more labor-saving and quick to rotate by using a tool such as a screwdriver in cooperation with the limiting groove 321.

[0058] In an example provided by the present invention, a specification module 13 is further provided on the fixed ruler 10, and the specification module 13 is used to indicate the specification of the measurement. As can be seen from the foregoing, this embodiment needs to fit the bending part of the workpiece to be measured during measurement. In this embodiment, the specification module 13 can be set to quickly achieve specification matching, thereby facilitating the selection of different specifications when measuring.

[0059] The present invention also provides a measurement method, which can be understood in conjunction with the above-mentioned measurement device. The measurement method comprises the following steps: Step 100: Based on the nominal diameter of the steel bar, the inner diameter of the steel bar is obtained. Specifically, according to the nominal diameter of the steel bar and in accordance with relevant standards, the inner diameter of the steel bar is calculated and determined.

[0060] Step 200: Determine the specification of the measuring device based on the nominal diameter and the inner diameter of the bending arc.

[0061] Step 300, take the steel bar 60 to be tested, and make the curved section of the steel bar 60 to be tested fit with the fitting part of the measuring device. Specifically, place the processed steel bar on an approximate plane or stand up at an angle that is convenient for measurement, fit the fixed ruler 10 of the measuring device with the straight section of the steel bar body, and use the fitting end of the measuring device to approach the steel bar curved arc. When the circular arc of the fitting end of the measuring device coincides with the steel bar curved arc, the nominal diameter of the measuring device is the inner diameter of the curved arc. If the circular arc of the fitting part does not coincide with the steel bar curved arc, it is necessary to replace another close measuring device for measurement.

[0062] Step 400, rotate the movable ruler 20 so that the straight edge 21 of the movable ruler 20 fits with the straight segment of the steel bar, and lock it with the locking assembly 40, and read the reading. Specifically, when the arc of the fitting part of the measuring device coincides with the curved arc of the steel bar, rotate the movable ruler 20 so that the straight edge 21 coincides with the straight segment of the steel bar after bending, and tighten the locking nut 42 to lock it. Read the distance between the first identification module 23 on the measuring device and the straight segment of the steel bar, which is the length of the straight segment of the steel bar hook, accurate to 1mm, and read the angle scale on the angle ruler 30, accurate to 5°.

[0063] Step 500, process the measured values, determine whether they meet the standard requirements, and output the judgment result. Specifically, when measuring, the same type of steel bars processed by the same equipment should be spot-checked by each work shift for no less than three pieces, and the average value of the three measurement values ​​is the measurement result of the same type of steel bars of the work shift. When the average value of the measurement value of the same type of steel bars processed by the same equipment of a certain work shift meets the standard requirements, it is determined that the same type of steel bars processed by the work shift meet the standard requirements; otherwise, the sampling should be doubled for retesting. When the retest results meet the standard requirements, it is determined that the same type of steel bars processed by the work shift meet the standard requirements; otherwise, it is determined that the type of steel bars processed by the work shift do not meet the standard requirements.

[0064] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment achieves stable and efficient measurement of the workpiece and improves the measurement accuracy through the cooperation of the fixed ruler 10, the movable ruler 20 and the angle ruler 30. Furthermore, through the arrangement of the connecting shaft 32 and the preload spring 50 on the angle ruler 30, the rotation of the movable ruler 20 is more stable, which is conducive to the rapid locking of the locking assembly 40.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A measuring device for steel bar hooks, characterized in that: include: A fixed ruler, one end of which has a fitting portion with an arc-shaped structure; A movable ruler, one end of which has a rotating portion with an arc structure, the rotating portion is rotatably connected to the fitting portion, so that the movable ruler can rotate relative to the fixed ruler, and the fitting portion is concentrically arranged with the rotating portion, and the outer wall diameter of the rotating portion is equal to the outer wall diameter of the fitting portion; An angle ruler, a portion of which passes through the movable ruler and is connected to the fixed ruler, and another portion of which is located on the movable ruler; The outer side of the movable ruler has a straight edge, the straight edge is tangent to the arc edge of the rotating part, and the straight edge is provided with a scale for straight length measurement; the angle ruler part located on the movable ruler is provided with a scale for angle measurement.

2. The measuring device for steel bar hook according to claim 1, characterized in that: The fixed ruler is also provided with a locking assembly, and the locking assembly is used to lock the movable ruler to the fixed ruler after the movable ruler is rotated to a predetermined angle.

3. The measuring device for steel bar hook according to claim 2, characterized in that: An arc groove is provided on the movable ruler at the position of the rotating part, the locking assembly is arranged in the arc groove, and the arc groove is arranged concentrically with the rotating part.

4. The measuring device for steel bar hook according to claim 3, characterized in that: The arc angle of the arc groove is greater than or equal to 180 degrees.

5. The measuring device for steel bar hook according to claim 3, characterized in that: The locking assembly includes a fixing screw and a locking nut, one end of the fixing screw is connected to the fixing ruler, the other end of the fixing screw passes through the arc groove and freely extends out, and the locking nut is arranged at the freely extending end of the fixing screw.

6. The measuring device for steel bar hook according to claim 1, characterized in that: The angle ruler comprises a scale plate and a connecting shaft, wherein the scale plate is arranged at one end of the connecting shaft, and the other end of the connecting shaft passes through the movable ruler and is connected to the fixed ruler.

7. The measuring device for steel bar hook according to claim 6, characterized in that: The connecting shaft is threadedly connected to the fixed ruler.

8. The measuring device for steel bar hook according to claim 6, characterized in that: An annular mounting groove is provided at the connection position between the scale plate and the connecting shaft, a preload spring is provided in the mounting groove, the preload spring is sleeved on the connecting shaft, one end of the preload spring abuts against the scale plate, and the other end of the preload spring abuts against the movable ruler.

9. The measuring device for steel bar hook according to claim 8, characterized in that: A limiting groove is provided at the end of the connecting shaft located at one end of the scale plate.

10. The measuring device for steel bar hook according to claim 1, characterized in that: The fixed ruler is also provided with a specification module, and the specification module is used to prompt the measurement specifications.

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