Bending test auxiliary measurer

Abstract

The utility model belongs to bending test device technical field discloses a kind of bending test auxiliary measurers, including fixed base, first auxiliary rod, first inductive piece, second auxiliary rod and second inductive piece.The first end of first auxiliary rod is hinged in O point, the vertical distance of O point and pressure point is 2h, the included angle of first auxiliary rod and vertical direction is α, and its length a satisfies h / a=cosα;The length of second auxiliary rod is b, and the included angle with vertical direction is α, the vertical distance of O point and the second end of second auxiliary rod is s, and tan (β+α)=(b*sinα) / (s‑2h).Bending pressure head presses down reinforcing bar, when the second end of first auxiliary rod and the first end of reinforcing bar are in the same horizontal plane, first inductive piece can sense reinforcing bar;When the second end of second auxiliary rod and the second end of reinforcing bar are in the same horizontal plane, second inductive piece can sense reinforcing bar.The bending test auxiliary measurer can improve test efficiency while meeting test accuracy, and maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of bending test device technology, and in particular to a bending test auxiliary measuring device. Background Technology

[0002] Forward and reverse bending testing machines are essential for testing the bending performance of hot-rolled ribbed steel bars marked with "E". Among them, roller-type bending testing machines are the most widely used, including fully automatic and semi-automatic models. Fully automatic forward and reverse bending testing machines have relatively high purchase and maintenance costs, and their intelligent response rates are slow, resulting in low practicality for large-scale testing. Semi-automatic forward and reverse bending testing machines (with only mechanical buttons for "bending," "stop," and "reset," and manual mechanical rollers) have lower costs and excellent operability, but they cannot accurately determine whether the bending angle of the steel bar meets the standard.

[0003] Therefore, there is an urgent need to propose an auxiliary measuring device for bending tests to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary measuring device for bending tests. This auxiliary measuring device can assist a semi-automatic testing machine in performing bending tests on reinforcing bars, thereby improving testing efficiency while maintaining high testing accuracy and low maintenance costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A bending test auxiliary measuring device is used to assist a testing machine in performing bending tests on reinforcing bars. The testing machine includes a bending indenter and two support rollers, which can respectively support both ends of the reinforcing bar. The bending indenter can press down on the reinforcing bar to bend it forward at a first angle 2α and backward at a second angle 2β. The bending test auxiliary measuring device includes:

[0007] A fixing seat is installed on the front surface of the bending pressure head, and the side of the fixing seat facing away from the bending pressure head is the setting surface;

[0008] A first auxiliary rod and a first sensing element are present. The first end of the first auxiliary rod is hinged to the center point O of the setting surface. The vertical distance between point O and the pressing point of the bending pressure head is 2h. The second end of the first auxiliary rod extends on the plane of the setting surface towards the first end of the reinforcing bar. The angle between the first auxiliary rod and the vertical direction is α, and its length a satisfies h / a=cosα. The first sensing element is located at the second end of the first auxiliary rod. The bending pressure head presses down on the reinforcing bar. The second end of the first auxiliary rod moves in the vertical direction, and the first end of the reinforcing bar moves in the counterclockwise direction. The second end of the first auxiliary rod and the first end of the reinforcing bar gradually approach each other until they are on the same horizontal plane. At this point, the first sensing element can sense the reinforcing bar.

[0009] The second auxiliary rod and the second sensor are described. The first end of the second auxiliary rod is hinged to point O. The second end of the second auxiliary rod extends towards the second end of the rebar on the plane where the setting surface is located. The length of the second auxiliary rod is b, and the angle between the second auxiliary rod and the vertical direction is α. The vertical distance between point O and the second end of the second auxiliary rod is s, and tan(β+α)=(b*sinα) / (s-2h). The second sensor is located at the second end of the second auxiliary rod. When the bending pressure head presses down on the rebar, the second end of the second auxiliary rod moves vertically, and the second end of the rebar moves clockwise. The second end of the second auxiliary rod and the second end of the rebar gradually approach each other until they are on the same horizontal plane, at which point the second sensor can detect the rebar.

[0010] Optionally, the first auxiliary rod and the second auxiliary rod are hinged to the fixed base by bolts.

[0011] Optionally, the setting surface is provided with an angle disk, the center of the angle disk coincides with point O, and the angle disk is provided with angle markings in its circumference.

[0012] Optionally, the bending test auxiliary measuring device further includes an adjustment component for fixing the first auxiliary rod and the second auxiliary rod to the fixed base. The adjustment component has an unlocked state and a locked state. In the unlocked state, the first auxiliary rod or the second auxiliary rod can rotate along the angle scale line. In the locked state, the first auxiliary rod or the second auxiliary rod is fixed to the fixed base, and the angle between the first auxiliary rod or the second auxiliary rod and the vertical direction is α.

[0013] Optionally, the adjustment assembly includes a slide groove and a locking member. The slide groove is located on the setting surface and extends along the outer circumference of the angle plate. The locking member is located between the first auxiliary rod and the second auxiliary rod. In the unlocked state, the locking member can slide within the slide groove. In the locked state, the locking member can be fixed within the slide groove. The first auxiliary rod or the second auxiliary rod can overlap the locking member.

[0014] Optionally, the bending test auxiliary measuring device further includes a level and a vertical scale. The level is located on the top of the outer periphery of the angle plate on the setting surface; the vertical scale is vertically set on the side of the fixed base facing the bending indenter.

[0015] Optionally, the fixing base has a vertical storage groove on the side facing the bending pressure head, and the vertical scale can be stored in the storage groove.

[0016] Optionally, the bending test auxiliary measuring device further includes a flip cover that can be fastened to the setting surface, such that the angle disc, at least a portion of the first auxiliary rod, and at least a portion of the second auxiliary rod are all located inside the flip cover.

[0017] Optionally, one end of the flip cover is hinged to the top of the mounting surface, and the other end of the flip cover can be magnetically attached to the mounting surface.

[0018] Optionally, the first sensing element includes a first contact rod and a first sensor. One end of the first contact rod is perpendicularly connected to the second end of the first auxiliary rod, and the other end is fixed with the first sensor and extends towards the bending head, such that the center of the sensing surface of the first sensor is in the same vertical plane as the central axis of the rebar, and the sensing surface of the first sensor is parallel to the central axis of the first end of the bent rebar. The second sensing element includes a second contact rod and a second sensor. One end of the second contact rod is perpendicularly connected to the second end of the second auxiliary rod, and the other end is fixed with the second sensor and extends towards the bending head, such that the center of the sensing surface of the second sensor is in the same vertical plane as the central axis of the rebar, and the sensing surface of the second sensor is parallel to the central axis of the second end of the bent rebar.

[0019] The beneficial effects of this utility model are:

[0020] The bending test auxiliary measuring device provided by this utility model includes a fixed base, a first auxiliary rod, a first sensing element, a second auxiliary rod, and a second sensing element. The fixed base can be installed on the front surface of the bending indenter for fixed installation. In the forward bending test, when the bending indenter presses down on the reinforcing bar, and the second end of the first auxiliary rod is close to the first end of the reinforcing bar and is on the same horizontal plane, since the first end of the first auxiliary rod is hinged to the center point O of the setting surface, the vertical distance between point O and the pressing point of the bending indenter is 2h, the angle between the first auxiliary rod and the vertical direction is α, and the length a of the first auxiliary rod satisfies h / a=cosα, according to geometric principles, the bending angle of the reinforcing bar at this time is exactly the first angle 2α. At this time, the first sensing element senses the reinforcing bar, causing the bending indenter to stop pressing down and automatically reset. That is, by using geometric principles, the first sensing element precisely controls the downward pressing degree of the bending indenter, improving the test accuracy of the forward bending angle of the reinforcing bar. In the reverse bending test, when the bending head presses down on the reinforcing bar, and the second end of the second auxiliary rod is close to the second end of the reinforcing bar and is on the same horizontal plane, since the angle between the second auxiliary rod and the vertical direction is α, and the vertical distance between point O and the second end of the second auxiliary rod is s, and tan(β+α)=(b*sinα) / (s-2h) is satisfied, according to the geometric principle, the reverse bending angle of the reinforcing bar at this time is exactly the second angle 2β. At this time, the second sensing element senses the reinforcing bar, causing the bending head to stop pressing down and automatically reset. By using the geometric principle, the second sensing element can accurately control the reverse pressing degree of the bending head, thereby improving the test accuracy of the reverse bending angle of the reinforcing bar. Attached Figure Description

[0021] Figure 1 This is a first structural schematic diagram of the bending test auxiliary measuring device provided in this embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the second structure of the bending test auxiliary measuring device provided in this embodiment of the utility model;

[0023] Figure 3 This is a partial enlarged view of the side of the bending test auxiliary measuring device provided in this embodiment of the utility model;

[0024] Figure 4 This is a diagram illustrating the geometric calculation principle for the positive bending of reinforcing bars.

[0025] Figure 5 This is the first geometric calculation principle diagram when the reinforcing bar is bent in the reverse direction;

[0026] Figure 6 This is the second geometric calculation principle diagram when the steel bar is bent in the reverse direction.

[0027] In the picture:

[0028] 100. Fixed base; 210. First auxiliary rod; 221. First contact rod; 222. First sensor; 310. Second auxiliary rod; 321. Second contact rod; 322. Second sensor; 400. Angle disc; 500. Hollowed-out design; 610. Level; 620. Vertical ruler; 700. Flip cover; 800. Magnetic block. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] This embodiment provides a bending test auxiliary measuring device, which can assist a semi-automatic testing machine in performing bending tests on reinforcing bars, improving testing efficiency while ensuring testing accuracy, and with low maintenance costs.

[0034] Specifically, such as Figures 1 to 6 As shown, this bending test auxiliary measuring device is used to assist a semi-automatic testing machine (not shown in the figure) in performing bending tests on reinforcing bars. The testing machine includes a bending head and two support rollers, which can support the two ends of the reinforcing bar respectively. The bending head can press down on the reinforcing bar, bending it at a first angle 2α in the forward direction and a second angle 2β in the reverse direction. The bending test auxiliary measuring device includes a fixed base 100, a first auxiliary rod 210, a first sensing element, a second auxiliary rod 310, and a second sensing element. The fixed base 100 is mounted on the front surface of the bending head, and the side of the fixed base 100 facing away from the bending head is the setting surface. The first end of the first auxiliary rod 210 is hinged to the center point O of the setting surface, meaning the first auxiliary rod 210 can rotate around point O on the setting surface. The vertical distance between point O and the pressing point of the bending head (i.e., the contact point between the bending head and the reinforcing bar) is 2h. Figure 4 The distance between point O and point D; the second end of the first auxiliary rod 210 extends towards the first end of the reinforcing bar on the plane where the setting surface is located, that is, the first auxiliary rod 210 is located on the side where the first end of the reinforcing bar is located; the angle between the first auxiliary rod 210 and the vertical direction is α, and the length a of the first auxiliary rod 210 satisfies h / a=cosα. The first sensing element is located at the second end of the first auxiliary rod 210. When the bending pressure head presses down on the reinforcing bar, the second end of the first auxiliary rod 210 moves in the vertical direction, and the first end of the reinforcing bar moves in the counterclockwise direction. The second end of the first auxiliary rod and the first end of the reinforcing bar gradually approach each other until they are on the same horizontal plane, at which point the first sensing element can sense the reinforcing bar. The first end of the second auxiliary rod 310 is hinged to point O. The second end of the second auxiliary rod 310 extends towards the second end of the reinforcing bar on the plane where the setting surface is located, that is, the second auxiliary rod 310 is on the side where the second end of the reinforcing bar is located. The length of the second auxiliary rod 310 is b, and the angle with the vertical direction is α. The vertical distance between point O and the second end of the second auxiliary rod 310 is s, and tan(β+α)=(b*sinα) / (s-2h). The second sensing element is located at the second end of the second auxiliary rod 310. When the bending pressure head presses down on the reinforcing bar, the second end of the second auxiliary rod 310 moves in the vertical direction, and the second end of the reinforcing bar moves in the clockwise direction. The second end of the second auxiliary rod and the second end of the reinforcing bar gradually approach each other. When the second end of the second auxiliary rod 310 and the second end of the reinforcing bar are on the same horizontal plane, the second sensing element can sense the reinforcing bar.

[0035] Based on the above design, the fixing seat 100 can be installed on the front surface of the bending head, serving as a fixed installation function. In the forward bending test, when the bending head presses down on the reinforcing bar, and the second end of the first auxiliary rod 210 is close to the first end of the reinforcing bar and is on the same horizontal plane, since the first end of the first auxiliary rod 210 is hinged to the center point O of the setting surface, the vertical distance between point O and the pressing point of the bending head is 2h, the angle between the first auxiliary rod 210 and the vertical direction is α, and the length a of the first auxiliary rod 210 satisfies h / a=cosα, according to geometric principles, as... Figure 4 As shown, points O, M, D, and N form a rhombus, meaning the lengths of line segments OM, ON, MD, and DN are equal and all 'a'. The dashed auxiliary line segment MN is perpendicular to the dashed auxiliary line segment OD. Therefore, the bending angle of the rebar is exactly the first angle 2α. At this point, the first sensing element detects the rebar, causing the bending head to stop pressing down and automatically reset. This utilizes geometric principles to precisely control the downward pressure of the bending head through the first sensing element, improving the test accuracy of the rebar's forward bending angle. In the reverse bending test, when the bending head presses down on the rebar, and the second end of the second auxiliary rod 310 is close to the second end of the rebar and on the same horizontal plane, since the angle between the second auxiliary rod 310 and the vertical direction is α, and the vertical distance between point O and the second end of the second auxiliary rod 310 is s, satisfying tan(β+α)=(b*sinα) / (s-2h), according to geometric principles, as... Figure 5 and Figure 6 Add dashed auxiliary lines. The line connecting points O and C is perpendicular to the line connecting points A and B. The lengths of line segments AC and BC are equal, and the lengths of line segments EC and FC are equal. At this time, the reverse bending angle of the rebar is exactly the second angle 2β. The second sensor detects the rebar, causing the bending head to stop pressing down and automatically reset. By using geometric principles, the second sensor precisely controls the degree of reverse pressing down of the bending head, improving the test accuracy of the reverse bending angle of the rebar.

[0036] It should be noted that the bending pressure head is located at the midpoint between the two rollers, and the length of the first auxiliary rod 210 is less than the length of the second auxiliary rod 310. Figure 4 , Figure 5 and Figure 6 Points M, N, A, B, E, and F are all annotation points added for geometric calculations when the steel bar is bent at the first angle in the forward direction or the second angle in the reverse direction. They do not limit the structure of the bending test auxiliary measuring device provided by this utility model.

[0037] In this embodiment, the first angle 2α is 90 degrees and the second angle 2β is 20 degrees, that is, the steel bar is first bent forward by 90 degrees and then bent backward by 20 degrees.

[0038] Optionally, the fixing base 100 is provided with a magnetic block 800 on the side facing the bending head, and the fixing base 100 is mounted on the front surface of the bending head by means of the magnetic block 800.

[0039] Optionally, the first sensing element includes a first contact rod 221 and a first sensor 222. One end of the first contact rod 221 is perpendicularly connected to the second end of the first auxiliary rod 210, and the other end is fixed with the first sensor 222, extending towards the bending head. This ensures that the center of the sensing surface of the first sensor 222 is in the same vertical plane as the central axis of the rebar, and that the sensing surface of the first sensor 222 is parallel to the central axis of the first end of the bent rebar. When the rebar is bent in the forward direction, the first contact rod 221 abuts against the first end of the rebar, allowing for a direct determination of the forward bending of the rebar to the first bending point. Angle; The second sensing element includes a second contact rod 321 and a second sensor 322. One end of the second contact rod 321 is perpendicularly connected to the second end of the second auxiliary rod 310, and the other end is fixed with the second sensor 322 and extends towards the bending head, so that the center of the sensing surface of the second sensor 322 is in the same vertical plane as the central axis of the steel bar, and the sensing surface of the second sensor 322 can be parallel to the central axis of the second end of the bent steel bar. When the steel bar is bent in the reverse direction, the second contact rod 321 abuts against the second end of the steel bar, and the steel bar can be intuitively judged to have bent in the reverse direction by a second angle.

[0040] Optionally, continue as follows Figure 3 As shown, the fixed base 100 is a hollow shell, and a controller is installed inside the hollow shell. The first connecting line passes through the hollow wall 500 near the second end of the first auxiliary rod 210 and connects the controller and the first sensing element (first sensor 222). The second connecting line passes through the hollow shell 500 near the second end of the second auxiliary rod 310 and connects the controller and the second sensing element (second sensor 322).

[0041] Optionally, the first auxiliary rod 210 and the second auxiliary rod 310 are hinged to the fixed base 100 by bolts, which facilitates the adjustment and disassembly of the tightness of the first auxiliary rod 210 and the second auxiliary rod 310.

[0042] An angle dial 400 is provided on the setting surface. The center of the angle dial 400 coincides with point O. Angle lines are provided around the circumference of the angle dial 400, which makes it convenient and intuitive to determine the angle between the first auxiliary rod 210 and the vertical direction, as well as the angle between the second auxiliary rod 310 and the vertical direction. Compared with the angle measuring ruler, it can improve the detection efficiency and avoid errors caused by human operation.

[0043] To ensure the correct installation orientation of the bending test auxiliary measuring device, the bending test auxiliary measuring device also includes a level 610 and a vertical scale 620. The level 610 is located on the top of the outer periphery of the angle plate 400 on the setting surface; the vertical scale 620 is vertically set on the side of the fixed base 100 facing the bending pressure head.

[0044] Furthermore, in order to save space, the mounting base 100 has a vertical storage slot on the side facing the curved pressure head, and the vertical ruler 620 can be stored in the storage slot.

[0045] Optionally, the bending test auxiliary measuring device further includes an adjustment component for fixing the first auxiliary rod 210 and the second auxiliary rod 310 to the fixed base 100. The adjustment component has an unlocked state and a locked state. In the unlocked state, the first auxiliary rod 210 or the second auxiliary rod 310 can rotate along the angle scale line. In the locked state, the first auxiliary rod 210 or the second auxiliary rod 310 is fixed to the fixed base 100, and the angle between the first auxiliary rod 210 or the second auxiliary rod 310 and the vertical direction is α.

[0046] Furthermore, the adjustment assembly includes a slide groove and a locking member. The slide groove is located on the setting surface and extends along the outer periphery of the angle plate 400. The locking member is located between the first auxiliary rod 210 and the second auxiliary rod 310. In the unlocked state, the locking member can slide in the slide groove. In the locked state, the locking member can be fixed in the slide groove. The first auxiliary rod 210 or the second auxiliary rod 310 can overlap the locking member.

[0047] Optionally, the bending test auxiliary measuring device also includes a flip cover 700, which can be fastened to the setting surface so that at least a portion of the angle disc 400, the first auxiliary rod 210, and the second auxiliary rod 310 are all located inside the flip cover 700.

[0048] Furthermore, one end of the flip cover 700 is hinged to the top of the mounting surface, and the other end of the flip cover 700 can be magnetically attached to the mounting surface.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A bending test auxiliary measuring device, used to assist a testing machine in performing bending tests on reinforcing bars, the testing machine comprising a bending pressure head and two support rollers, the two support rollers being able to support the two ends of the reinforcing bar respectively, the bending pressure head being able to press down on the reinforcing bar to bend it forward at a first angle 2α and backward at a second angle 2β, characterized in that, The bending test auxiliary measuring device includes: A fixing seat (100) is installed on the front surface of the bending head, and the side of the fixing seat (100) facing away from the bending head is the setting surface; A first auxiliary rod (210) and a first sensing element are provided. The first end of the first auxiliary rod (210) is hinged to the center point O of the setting surface. The vertical distance between point O and the pressing point of the bending pressure head is 2h. The second end of the first auxiliary rod (210) extends in the direction close to the first end of the reinforcing bar on the plane where the setting surface is located. The angle between the first auxiliary rod (210) and the vertical direction is α, and its length a satisfies h / a=cosα. The first sensing element is located at the second end of the first auxiliary rod (210). The bending pressure head presses down on the reinforcing bar. The second end of the first auxiliary rod (210) moves in the vertical direction, and the first end of the reinforcing bar moves in the counterclockwise direction. The second end of the first auxiliary rod (210) and the first end of the reinforcing bar gradually approach each other until they are on the same horizontal plane. At this point, the first sensing element can sense the reinforcing bar. The second auxiliary rod (310) and the second sensing element are described. The first end of the second auxiliary rod (310) is hinged to point O. The second end of the second auxiliary rod (310) extends towards the second end of the reinforcing bar on the plane where the setting surface is located. The length of the second auxiliary rod (310) is b, and the angle between it and the vertical direction is α. The vertical distance between point O and the second end of the second auxiliary rod (310) is s, and tan(β+α)=(b*sinα) / (s-2h). The second sensing element is located at the second end of the second auxiliary rod (310). The bending pressure head presses down on the reinforcing bar. The second end of the second auxiliary rod (310) moves in the vertical direction, and the second end of the reinforcing bar moves in the clockwise direction. The second end of the second auxiliary rod (310) and the second end of the reinforcing bar gradually approach each other until they are on the same horizontal plane. At this point, the second sensing element can sense the reinforcing bar.

2. The bending test auxiliary measuring device according to claim 1, characterized in that, The first auxiliary rod (210) and the second auxiliary rod (310) are hinged to the fixed base (100) by bolts.

3. The bending test auxiliary measuring device according to claim 1, characterized in that, An angle disk (400) is provided on the setting surface. The center of the angle disk (400) coincides with point O. Angle lines are provided around the circumference of the angle disk (400).

4. The bending test auxiliary measuring device according to claim 3, characterized in that, The bending test auxiliary measuring device also includes an adjustment component, which is used to fix the first auxiliary rod (210) and the second auxiliary rod (310) on the fixed base (100). The adjustment component has an unlocked state and a locked state. In the unlocked state, the first auxiliary rod (210) or the second auxiliary rod (310) can rotate along the angle scale line. In the locked state, the first auxiliary rod (210) or the second auxiliary rod (310) is fixed to the fixed base (100), and the angle between the first auxiliary rod (210) or the second auxiliary rod (310) and the vertical direction is α.

5. The bending test auxiliary measuring device according to claim 4, characterized in that, The adjustment assembly includes a slide groove and a locking member. The slide groove is located on the setting surface and extends along the outer periphery of the angle plate (400). The locking member is located between the first auxiliary rod (210) and the second auxiliary rod (310). In the unlocked state, the locking member can slide in the slide groove. In the locked state, the locking member can be fixed in the slide groove. The first auxiliary rod (210) or the second auxiliary rod (310) can overlap the locking member.

6. The bending test auxiliary measuring device according to claim 3, characterized in that, The bending test auxiliary measuring device also includes a level (610) and a vertical scale (620). The level (610) is located on the top of the outer periphery of the angle plate (400) on the setting surface. The vertical scale (620) is vertically set on the side of the fixed base (100) facing the bending pressure head.

7. The bending test auxiliary measuring device according to claim 6, characterized in that, The fixed base (100) has a vertical storage groove on the side facing the bending pressure head, and the vertical scale (620) can be stored in the storage groove.

8. The bending test auxiliary measuring device according to claim 3, characterized in that, The bending test auxiliary measuring device also includes a flip cover (700), which can be fastened to the setting surface such that at least a portion of the angle disc (400), the first auxiliary rod (210), and the second auxiliary rod (310) are all located inside the flip cover (700).

9. The bending test auxiliary measuring device according to claim 8, characterized in that, One end of the flip cover (700) is hinged to the top of the mounting surface, and the other end of the flip cover (700) can be magnetically attached to the mounting surface.

10. The bending test auxiliary measuring device according to claim 1, characterized in that, The first sensing element includes a first contact rod (221) and a first sensor (222). One end of the first contact rod (221) is perpendicularly connected to the second end of the first auxiliary rod (210), and the other end is fixed with the first sensor (222) and extends towards the bending head, so that the center of the sensing surface of the first sensor (222) is in the same vertical plane as the central axis of the rebar and the sensing surface of the first sensor (222) is parallel to the central axis of the first end of the bent rebar. The second sensing element includes a second contact rod (321) and a second sensor (322). One end of the second contact rod (321) is perpendicularly connected to the second end of the second auxiliary rod (310), and the other end is fixed with the second sensor (322) and extends towards the bending head, so that the center of the sensing surface of the second sensor (322) is in the same vertical plane as the central axis of the rebar and the sensing surface of the second sensor (322) is parallel to the central axis of the second end of the bent rebar.

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