Reinforcement bending strength detection mechanism

Abstract

The application discloses a reinforcing steel bar bending strength detection mechanism, which comprises a base, a fixing groove is formed in the base, a fixing shaft is fixedly installed in the fixing groove, a rotating pipe is rotatably connected to the base through a bearing, a rotating plate is fixedly installed at the top of the rotating pipe, one end of the fixing shaft penetrates through the rotating pipe and the rotating plate and extends to the top of the base, and the rotating pipe is rotatably connected to the fixing shaft through a bearing. By starting the motor, the movable column is pushed to slide along the preset track of the rotating plate, the detection requirement of reinforcing steel bars with different diameters can be met, the universality of the device is improved, the equipment investment cost is reduced, when the rotating plate rotates, the movable column moves along with the rotating plate and continuously applies a bending moment, the reinforcing steel bar is slowly bent with the contact point of the fixing shaft and the fixed column as a fulcrum, the pointer on the rotating plate rotates synchronously with the rotating plate, the pointer points to the scale line on the surface of the base in real time, and the bending angle of the reinforcing steel bar can be directly and accurately read.

Description

Technical Field

[0001] This application relates to the field of construction testing technology, and in particular to a testing organization for the bending strength of reinforcing bars. Background Technology

[0002] Reinforcing steel refers to steel used in reinforced concrete and prestressed reinforced concrete, with a circular cross-section, sometimes square with rounded corners. It includes plain round bars, ribbed bars, and twisted bars. The main function of reinforcing steel in construction is to provide connection and support, and its resistance to bending is particularly important for this supporting function. Currently, on construction sites, people typically use reinforcing steel strength testers to test the bending strength of reinforcing steel.

[0003] Existing rebar bending strength testing mechanisms suffer from poor equipment versatility, increasing investment costs. They lack precise angle indicators, relying on manual estimation of the bending angle. Furthermore, some machines operate at high speeds, making precise control of the bending process difficult, leading to significant data errors and failing to meet the accuracy requirements of standards. Additionally, the lack of specialized protective structures for the rebar bending process allows the rebar to easily slide forward and eject due to insufficient length or uneven stress, especially in cases of brittle fracture, where fragments tend to fly. The absence of rigid limiting components that rotate synchronously with the rebar during bending fails to effectively prevent such safety hazards without hindering the bending process, posing a threat to operator safety. Therefore, this rebar bending strength testing mechanism is proposed to address these issues. Utility Model Content

[0004] The steel bar bending strength testing mechanism provided in this embodiment has problems with insufficient versatility and testing accuracy. It requires special components or adjustment structures for steel bars of different specifications. Furthermore, it lacks a precise angle indicator device, and the bending process is difficult to control, resulting in large data errors. At the same time, it lacks a special protective structure and a follow-up rigid limit component, which can easily cause steel bars to pop out or break and fly off, threatening the safety of operators.

[0005] According to one aspect of this application, a rebar bending strength testing mechanism is provided, comprising a base, a fixing groove inside the base, a fixing shaft fixedly installed inside the fixing groove, a rotating tube rotatably connected inside the base via a bearing, a rotating plate fixedly installed at the top end of the rotating tube, a movable column fixedly installed on the rotating plate, one end of the fixing shaft passing through the rotating tube and the rotating plate and extending to the top end of the base, the rotating tube rotatably connected to the fixing shaft via a bearing, a driven gear fixedly installed inside the fixing groove extending from the rotating tube, a motor fixedly installed on the base, and a driving gear fixedly installed inside the fixing groove extending from the output shaft of the motor, the driving gear meshing with the driven gear.

[0006] In this technical solution, a fixing column is fixedly installed on the base.

[0007] In this technical solution, a plurality of auxiliary wheels are fixedly installed at the bottom end of the rotating shaft plate, and the bottom ends of the plurality of auxiliary wheels abut against the base.

[0008] In this technical solution, a pointer is fixedly installed on the rotating base.

[0009] In this technical solution, the base is provided with scale lines.

[0010] In this technical solution, a rotating shaft is rotatably connected to the fixed shaft via a bearing, and a limit plate is fixedly installed at one end of the rotating shaft.

[0011] In this technical solution, each of the limiting plates has a fixing groove inside, and each of the fixing grooves has a connecting plate slidably connected inside. Each of the two ends of the connecting plate is fixedly installed with a plug rod and a connecting rod, respectively. One end of the connecting rod extends to the outer end of the limiting seat and is fixedly installed with a pull plate. Each pull plate is fixedly installed with a pull ring, and one end of each plug rod extends to the outer end of the limiting plate.

[0012] In this technical solution, springs are sleeved on the outer surfaces of both connecting rods, and the two ends of the multiple springs are respectively fixedly connected to the fixing groove and the connecting plate.

[0013] In this technical solution, the movable column is provided with a plug-in slot, and all plug-in rods can be plugged into the plug-in slot.

[0014] In this technical solution, four support legs are fixedly installed at the bottom of the box.

[0015] Through the above embodiments of this application, by starting the motor, the movable column is pushed to slide along the preset trajectory of the rotating plate, which can adapt to the detection needs of steel bars of different diameters, significantly improve the versatility of the device, and reduce the equipment investment cost. When the rotating plate rotates, the movable column moves with the rotating plate and continuously applies bending torque, so that the steel bar slowly bends with the contact point between the fixed shaft and the fixed column as the fulcrum. The pointer on the rotating plate rotates synchronously with the rotating plate, and the pointer points to the scale line on the base surface in real time, so that the bending angle of the steel bar can be read intuitively and accurately.

[0016] Pulling the pull ring causes one end of the limiting plate to rotate directly above the movable column. Releasing the pull ring establishes a secure connection between the movable column and the limiting plate. The limiting plate, connected to the fixed shaft via a bearing, always provides a rigid limit above the reinforcing bar. The limiting plate can rotate synchronously with the bending of the reinforcing bar, neither hindering the bending action nor causing the reinforcing bar to bounce upwards or fracture brittlely and fly away, thus completely eliminating safety hazards and ensuring the personal safety of operators. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the overall internal structure of an embodiment of this application;

[0020] Figure 3 This is a top view of the internal structure of an embodiment of this application.

[0021] Figure 4 Examples of this application Figure 2 A magnified structural diagram at point A.

[0022] In the diagram: 1. Base; 2. Pointer; 3. Movable column; 4. Limiting plate; 5. Rotating shaft; 6. Fixed shaft; 7. Fixed groove; 8. Rotating plate; 9. Auxiliary wheel; 10. Fixed column; 11. Motor; 12. Driving gear; 13. Rotating tube; 14. Driven gear; 15. Support leg; 16. Spring; 17. Pull ring; 18. Pull plate; 19. Connecting rod; 20. Connecting plate; 21. Insertion rod; 22. Insertion groove; 23. Scale line. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Please see Figure 1-4As shown, the system includes a base 1, with a fixing groove 7 inside the base 1. A fixing shaft 6 is fixedly installed inside the fixing groove 7. A rotating tube 13 is rotatably connected inside the base 1 via a bearing. A rotating plate 8 is fixedly installed at the top of the rotating tube 13. A movable column 3 is fixedly installed on the rotating plate 8. One end of the fixing shaft 6 passes through the rotating tube 13 and the rotating plate 8 and extends to the top of the base 1. The rotating tube 13 is rotatably connected to the fixing shaft 6 via a bearing. A driven gear 14 is fixedly installed inside the fixing groove 7 where the rotating tube 13 extends. A motor 11 is fixedly installed on the base 1. A driving gear 12 is fixedly installed inside the fixing groove 7 where the output shaft of the motor 11 extends. The driving gear 12 meshes with the driven gear 14.

[0030] In this technical solution, a fixing column 10 is fixedly installed on the base 1.

[0031] In this technical solution, a plurality of auxiliary wheels 9 are fixedly installed at the bottom end of the rotating plate 8, and the bottom ends of the plurality of auxiliary wheels 9 abut against the base 1.

[0032] In this technical solution, a pointer 2 is fixedly installed on the rotating plate 8.

[0033] In this technical solution, the base 1 is provided with scale lines 23, and the quantitative markings of the scale lines 23 replace manual estimation.

[0034] In this technical solution, a rotating shaft 5 is rotatably connected to the fixed shaft 6 via a bearing, and a limit plate 4 is fixedly installed at one end of the rotating shaft 5.

[0035] In this technical solution, each of the limiting plates 4 has a fixing groove 7 inside, and each of the fixing grooves 7 has a connecting plate 20 slidably connected inside. Each of the two ends of the connecting plate 20 is fixedly installed with a plug rod 21 and a connecting rod 19. One end of the connecting rod 19 extends to the outer end of the limiting plate 4 and is fixedly installed with a pull plate 18. Each pull plate 18 is fixedly installed with a pull ring 17. One end of each plug rod 21 extends to the outer end of the limiting plate 4.

[0036] In this technical solution, springs 16 are sleeved on the outer surfaces of the two connecting rods 19, and the two ends of the multiple springs 16 are respectively fixedly connected to the fixing groove 7 and the connecting plate 20.

[0037] In this technical solution, the movable column 3 is provided with a plug-in slot 22, and all the plug-in rods 21 can be plugged into the plug-in slot 22.

[0038] In this technical solution, four support legs 15 are fixedly installed at the bottom end of the base 1.

[0039] When using this application, before testing, the steel bar to be tested is placed on one side of the fixed column 10 on the base 1, so that one side of the steel bar is in close contact with the fixed shaft 6, ensuring that the bending stress origin of all specifications of steel bars is completely consistent, avoiding the deviation of test data caused by placement offset from the source, and greatly improving the comparability and reliability of test results of different steel bars.

[0040] Pull ring 17 pulls pull plate 18, pull plate 18 drives connecting rod 19 to slide along fixed groove 7 inside limit plate 4. Connecting rod 19 simultaneously drives connecting plate 20 to compress spring 16, causing plug rod 21 to retract into fixed groove 7, so that one end of limit plate 4 rotates to directly above movable column 3. After releasing pull ring 17, spring 16 releases elastic potential energy to push connecting plate 20 to reset, driving plug rod 21 to insert into plug groove 22 on movable column 3, realizing a stable connection between movable column 3 and limit plate 4. Limit plate 4 always forms a rigid limit above the steel bar. Limit plate 4 can rotate synchronously with the bending of steel bar, which does not hinder the bending action, and can form an effective block when steel bar has an upward jumping or brittle fracture tendency to splash, completely blocking safety hazards and ensuring the personal safety of operators. At the same time, movable column 3 makes the bending force of steel bar uniform, avoiding detection errors caused by uneven force application.

[0041] The motor 11 is started, and the output shaft of the motor 11 drives the active gear 12 in the fixed groove 7 to rotate. The active gear 12 drives the driven gear 14 to rotate, driving the rotating tube 13 to rotate around the fixed shaft 6. The rotating plate 8 rotates synchronously with the rotating tube 13. The position of the movable column 3 on the rotating plate 8 is adjusted according to the diameter of the steel bar: the movable column 3 is pushed to slide along the preset trajectory of the rotating plate 8 until the movable column 3 is aligned with the side of the steel bar away from the fixed column 10. This can adapt to the detection needs of steel bars of different diameters, significantly improve the versatility of the device, and reduce the equipment investment cost. When the rotating plate 8 rotates, the movable column 3 moves with the rotating plate 8 and closely abuts against one side of the steel bar, and continuously applies bending torque, so that the steel bar slowly bends with the contact point between the fixed shaft 6 and the fixed column 10 as the fulcrum. Multiple equidistant auxiliary wheels 9 at the bottom of the rotating plate 8 abut against the surface of the base 1, converting sliding friction into rolling friction, greatly reducing rotational resistance, reducing component wear, and ensuring that the rotation speed of the rotating plate 8 is uniform and stable. This avoids sudden changes in the force on the steel bar due to jamming, prevents abnormal fracture caused by local stress concentration, and ensures the stability of the bending process and the authenticity of the detection results.

[0042] When the rotating plate 8 drives the movable column 3 to continuously apply force until the steel bar is completely bent to meet the testing standard, the motor 11 is turned off. During the entire bending process, the pointer 2 on the rotating plate 8 rotates synchronously with the rotating plate 8. The pointer 2 points to the scale line 23 on the surface of the base 1 in real time, which can intuitively and accurately read the bending angle of the steel bar. The quantitative marking of the scale line 23 replaces manual estimation. Moreover, the motor 11 can accurately control the bending speed by adjusting the rotation speed, adapting to the plasticity characteristics of steel bars of different materials, further ensuring the reliability of the test results.

[0043] The advantages of this application are:

[0044] 1. By starting the motor 11, the movable column 3 is pushed to slide along the preset trajectory of the rotating plate 8, which can adapt to the detection needs of steel bars of different diameters, significantly improve the versatility of the device, and reduce the equipment investment cost. When the rotating plate 8 rotates, the movable column 3 moves with the rotating plate 8 and continuously applies bending torque, so that the steel bar bends slowly with the contact point between the fixed shaft 6 and the fixed column 10 as the fulcrum. The pointer 2 on the rotating plate 8 rotates synchronously with the rotating plate 8, and the pointer 2 points to the scale line 23 on the surface of the base 1 in real time, which can intuitively and accurately read the bending angle of the steel bar.

[0045] 2. Pulling the pull plate 18 by the pull ring 17 causes one end of the limiting plate 4 to rotate directly above the movable column 3. After releasing the pull ring 17, a stable connection is achieved between the movable column 3 and the limiting plate 4. The limiting plate 4, which is connected to the fixed shaft 6 by a bearing, always forms a rigid limit above the reinforcing bar. The limiting plate 4 can rotate synchronously with the bending of the reinforcing bar, which not only does not hinder the bending action, but also forms an effective blockage when the reinforcing bar tends to bounce upward or fracture brittlely, completely eliminating safety hazards and ensuring the personal safety of the operators.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A steel bar bending strength testing mechanism, comprising a base (1), characterized in that: The base (1) has a fixed groove (7) inside, and a fixed shaft (6) is fixedly installed inside the fixed groove (7). A rotating tube (13) is rotatably connected inside the base (1) through a bearing. A rotating plate (8) is fixedly installed at the top of the rotating tube (13). A movable column (3) is fixedly installed on the rotating plate (8). One end of the fixed shaft (6) passes through the rotating tube (13) and the rotating plate (8) and extends to the top of the base (1). The rotating tube (13) is rotatably connected to the fixed shaft (6) through a bearing. A driven gear (14) is fixedly installed inside the fixed groove (7) where the rotating tube (13) extends. A motor (11) is fixedly installed on the base (1). The output shaft of the motor (11) extends inside the fixed groove (7) where a driving gear (12) is fixedly installed. The driving gear (12) meshes with the driven gear (14).

2. The steel bar bending strength testing mechanism according to claim 1, characterized in that: A fixing column (10) is fixedly installed on the base (1).

3. The steel bar bending strength testing mechanism according to claim 1, characterized in that: The bottom end of the rotating plate (8) is fixedly equipped with a plurality of auxiliary wheels (9) distributed at equal intervals, and the bottom ends of the plurality of auxiliary wheels (9) abut against the base (1).

4. The steel bar bending strength testing mechanism according to claim 1, characterized in that: A pointer (2) is fixedly installed on the rotating plate (8).

5. The steel bar bending strength testing mechanism according to claim 1, characterized in that: The base (1) is provided with scale lines (23).

6. The steel bar bending strength testing mechanism according to claim 1, characterized in that: A rotating shaft (5) is rotatably connected to the fixed shaft (6) via a bearing, and a limit plate (4) is fixedly installed at one end of the rotating shaft (5).

7. The steel bar bending strength testing mechanism according to claim 6, characterized in that: The limiting plate (4) has a fixing groove (7) inside. The fixing groove (7) is slidably connected to a connecting plate (20). The two ends of the connecting plate (20) are respectively fixedly installed with a plug rod (21) and a connecting rod (19). One end of the connecting rod (19) extends to the outer end of the limiting plate (4) and is fixedly installed with a pull plate (18). Pull rings (17) are fixedly installed on the pull plate (18). One end of the plug rod (21) extends to the outer end of the limiting plate (4).

8. The steel bar bending strength testing mechanism according to claim 7, characterized in that: Springs (16) are fitted onto the outer surfaces of both connecting rods (19), and the two ends of the multiple springs (16) are fixedly connected to the fixing groove (7) and the connecting plate (20) respectively.

9. The steel bar bending strength testing mechanism according to claim 7, characterized in that: The movable column (3) is provided with a plug-in slot (22), and all the plug-in rods (21) can be plugged into the plug-in slot (22).

10. The steel bar bending strength testing mechanism according to claim 1, characterized in that: The base (1) has four legs (15) fixedly installed at its bottom end.

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