Steel bar bending performance detection equipment

Abstract

The utility model relates to reinforcing steel bar bending performance detection equipment, which belongs to the field of reinforcing steel bar performance detection, and comprises a detection table, the upper surface of the detection table is provided with a detection mechanism for improving the reinforcing steel bar bending performance detection effect, and the left and right sides of the detection mechanism are provided with clamping mechanisms for rapidly bending and clamping reinforcing steel bars. According to the steel bar bending performance detection equipment, the detection mechanism is arranged and comprises the supporting frame, the first hydraulic cylinder, the bending frame, the pressure sensor and the laser range finder, when a bending test is carried out, a steel bar is placed on the clamping mechanism, the supporting frame provides stable supporting, the first hydraulic cylinder is started through the controller to control the bending frame to move, and the bending performance of the steel bar is detected. The reinforcing steel bar is bent by applying force to make contact with the reinforcing steel bar through the bending frame, the pressure sensor is installed on the bending frame and used for monitoring the force applied to the reinforcing steel bar, and the laser range finder is used for measuring the displacement of the reinforcing steel bar in the bending process so that the bending performance of the reinforcing steel bar can be evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar performance detection, in particular to a steel bar bending performance detection device. Background Art

[0002] Rebar is a type of construction steel and is mainly used in reinforced concrete structures. In order to enhance the strength of the rebar, threaded reinforcement bars are usually arranged on the outside of the rebar. Compared with concrete, rebar has stronger bending resistance, so rebar and other reinforcing materials are usually added to concrete to work with it to improve the overall strength. Therefore, in order to ensure the overall strength of reinforced concrete, it is usually necessary to test the bending resistance of the rebar.

[0003] For example, a bending machine for testing the bending resistance of steel bars disclosed in Chinese patent announcement number (CN212397914U) includes a base, a vertical plate, a hydraulic cylinder, a pressure sensor, a bending pressure plate, a positioning groove and a display. When the bending performance of the steel bars needs to be tested, the steel bars that need to be bent can be placed in the limit groove for limit fixing, and then the hydraulic rod is driven down by the hydraulic cylinder to make the middle section of the steel bar aligned and snapped to the inner side of the positioning groove at the bottom of the bending pressure plate. The middle section of the steel bar is pressed down and bent by the bending pressure plate. At the same time, the bending and pressing force is detected in real time by the pressure sensor, and displayed specifically and intuitively on the display for the inspection personnel to observe and record, making the inspection more convenient and quick, reducing the difficulty of the inspection, improving the reliability of the inspection results, making the applicability of the bending inspection stronger, and reducing the limitation of the bending inspection.

[0004] However, as in the above patent, there is still a problem of poor accuracy in anti-bending detection of the steel bar's anti-bending performance. For example, in the above patent, a hydraulic cylinder is used to push the bending pressure plate downward to apply pressure to the steel bar, and a pressure sensor is used to detect the applied pressure value to detect the anti-bending performance of the steel bar. However, this method can only detect the applied pressure, and cannot detect the bending deformation data of the steel bar under different pressures. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a steel bar bending performance testing device, which has the advantages of high anti-bending detection accuracy, and solves the problem of poor anti-bending detection accuracy for steel bar anti-bending performance in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel bar bending performance testing device, comprising a testing platform, the upper surface of the testing platform is provided with a testing mechanism for improving the testing effect of the steel bar bending performance, and the left and right sides of the testing mechanism are provided with a clamping mechanism for quickly bending and clamping the steel bar;

[0007] The detection mechanism includes a support frame, a first hydraulic cylinder, a bending frame, a pressure sensor and a laser rangefinder. The support frame is fixed to the upper surface of the detection platform, the first hydraulic cylinder is fixed to the middle part of the upper surface of the support frame, the bending frame is fixed to the outer side of the output shaft of the first hydraulic cylinder, the pressure sensor is fixed to the inner top wall of the bending frame, and the laser rangefinder is fixed to the middle part of the upper surface of the detection platform.

[0008] Furthermore, a controller is fixed on the front of the testing table, and a storage drawer is provided on the right side of the front of the testing table.

[0009] Furthermore, the number of the pressure sensors is no less than two and they are evenly distributed on the inner top wall of the bending frame.

[0010] Furthermore, the laser rangefinder and the output shaft of the first hydraulic cylinder are located on the same central axis.

[0011] Furthermore, the clamping mechanism includes two clamping frames, two clamping bases, two second hydraulic cylinders, two movable clamping blocks and auxiliary parts. The two clamping frames are respectively fixed to the left and right sides of the support frame, the two clamping bases are respectively fixed to the inner bottom walls of the two clamping frames, the two second hydraulic cylinders are respectively fixed to the upper surfaces of the two clamping frames, the two movable clamping blocks are respectively fixed to the outer sides of the output shafts of the two second hydraulic cylinders, and the auxiliary parts are arranged on the opposite sides of the two clamping frames to facilitate the adjustment of the steel bar clamping position.

[0012] Furthermore, the auxiliary parts include two brackets, two rotating shafts and two guide wheels. The two brackets are respectively fixed to the opposite sides of the two clamping frames, the two rotating shafts are respectively rotatably connected to the front and rear inner walls of the two brackets through bearings, and the two guide wheels are respectively fixed to the outer sides of the two rotating shafts.

[0013] Furthermore, the left and right sides of the two clamping frames are both provided with clamping openings, and the opposite sides of the clamping base and the movable clamping block are both provided with clamping grooves.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The steel bar bending performance testing equipment is provided with a testing mechanism, including a support frame, a first hydraulic cylinder, a bending frame, a pressure sensor and a laser rangefinder. When performing a bending test, the steel bar is placed on a clamping mechanism, and the support frame provides stable support. The first hydraulic cylinder is started by a controller to control the movement of the bending frame, and the steel bar is contacted with the bending frame by applying force to bend the steel bar. The pressure sensor is installed on the bending frame to monitor the force applied to the steel bar. The laser rangefinder is used to measure the displacement of the steel bar during the bending process so as to evaluate its bending performance.

[0016] 2. The steel bar bending performance testing equipment is provided with a clamping mechanism, which is used to clamp the steel bar for bending test. It includes a clamping frame, a clamping base, a second hydraulic cylinder, a mobile clamping block and auxiliary parts. The clamping frame is fixed on the support frame, and the clamping base is fixed on the bottom of the clamping frame. The second hydraulic cylinder controls the position of the mobile clamping block by applying pressure, thereby clamping the steel bar. The auxiliary parts can adjust the position of the clamping frame to ensure that the steel bar is clamped correctly and remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the detection mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the clamping mechanism of the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the clamping mechanism of the utility model.

[0021] In the figure: 1 detection table, 2 detection mechanism, 21 support frame, 22 first hydraulic cylinder, 23 bending frame, 24 pressure sensor, 25 laser rangefinder, 3 clamping mechanism, 31 clamping frame, 32 clamping base, 33 second hydraulic cylinder, 34 mobile clamping block, 35 auxiliary part, 351 bracket, 352 rotating shaft, 353 guide wheel, 36 clamping groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 A steel bar bending performance testing device in this embodiment includes a testing platform 1. The upper surface of the testing platform 1 is provided with a testing mechanism 2 for improving the steel bar bending performance testing effect. The left and right sides of the testing mechanism 2 are provided with clamping mechanisms 3 for quickly bending and clamping the steel bars.

[0024] In this embodiment, a controller is fixed on the front of the testing platform 1 , and a storage drawer is provided on the right side of the front of the testing platform 1 .

[0025] See also Figure 2In order to detect the bending performance of the steel bar, the detection mechanism 2 in this embodiment includes a support frame 21, a first hydraulic cylinder 22, a bending frame 23, a pressure sensor 24 and a laser rangefinder 25. The support frame 21 is fixed to the upper surface of the detection platform 1, the first hydraulic cylinder 22 is fixed to the middle of the upper surface of the support frame 21, and the bending frame 23 is fixed to the outer side of the output shaft of the first hydraulic cylinder 22. When performing a bending test, the steel bar is placed on the clamping mechanism 3, the support frame 21 provides stable support, the pressure sensor 24 is fixed to the inner top wall of the bending frame 23, and the first hydraulic cylinder 22 is started by the controller to control the movement of the bending frame 23. The bending frame 23 contacts the steel bar by applying force to bend the steel bar. The laser rangefinder 25 is fixed to the middle of the upper surface of the detection platform 1. The laser rangefinder 25 is used to measure the displacement of the steel bar during the bending process in order to evaluate its bending performance.

[0026] In this embodiment, the number of pressure sensors 24 is not less than two, and they are evenly distributed on the inner top wall of the bending frame 23. The pressure sensor 24 is installed on the bending frame 23 to monitor the force applied to the steel bar. The laser rangefinder 25 is located on the same central axis as the output shaft of the first hydraulic cylinder 22. The laser rangefinder 25 sends a beam of laser pulses through a built-in laser transmitter. These pulses are usually non-visible light, such as infrared. Once the laser pulse collides with the target object, it will be reflected back to the laser rangefinder 25. The receiver of the rangefinder will receive these reflected signals. The laser rangefinder 25 will measure the time interval flight time between sending the laser pulse and receiving the reflected signal, and then use the relationship between speed and time to calculate the distance between the target object and the laser rangefinder 25. The speed of light is usually used as the speed value in the calculation.

[0027] See also Figure 3-4 In order to facilitate the bending, clamping and fixing of the steel bars, the clamping mechanism 3 in this embodiment includes two clamping frames 31, two clamping bases 32, two second hydraulic cylinders 33, two movable clamping blocks 34 and auxiliary parts 35. The two clamping frames 31 are respectively fixed to the left and right sides of the support frame 21, the two clamping bases 32 are respectively fixed to the inner bottom walls of the two clamping frames 31, the two second hydraulic cylinders 33 are respectively fixed to the upper surfaces of the two clamping frames 31, and the two movable clamping blocks 34 are respectively fixed to the outer sides of the output shafts of the two second hydraulic cylinders 33. The clamping frames 31 are fixed on the support frame 21, and the clamping bases 32 are fixed to the bottom of the clamping frames 31. The steel bar samples to be tested are placed in the clamping grooves 36 on the two clamping bases 32. The auxiliary parts 35 are arranged on the opposite sides of the two clamping frames 31 to facilitate the adjustment of the steel bar clamping position. The auxiliary parts 35 can adjust the position of the clamping frames 31. The steel bar sample can push the steel bar to slide along the guide wheel 353 before clamping to ensure that the steel bar is clamped correctly and remains stable.

[0028] The auxiliary component 35 includes two brackets 351, two rotating shafts 352 and two guide wheels 353. The two brackets 351 are respectively fixed to the opposite sides of the two clamping frames 31. The two rotating shafts 352 are rotatably connected to the front and rear inner walls of the two brackets 351 through bearings. The two guide wheels 353 are respectively fixed to the outer sides of the two rotating shafts 352.

[0029] In this embodiment, clamping openings are provided on the left and right sides of the two clamping frames 31, clamping grooves 36 are provided on the opposite sides of the clamping base 32 and the movable clamping block 34, and the second hydraulic cylinder 33 controls the position of the movable clamping block 34 by applying pressure, thereby clamping the steel bars.

[0030] The working principle of the above embodiment is:

[0031] When used to test the bending performance of steel bars, the clamping frame 31 is fixed on the support frame 21, and the clamping base 32 is fixed on the bottom of the clamping frame 31. The steel bar sample to be tested is placed in the clamping groove 36 on the two clamping bases 32. Then the second hydraulic cylinder 33 controls the position of the mobile clamping block 34 by applying pressure, thereby clamping the steel bar. The auxiliary part 35 can adjust the position of the clamping frame 31. The steel bar sample can push the steel bar to slide along the guide wheel 353 before clamping to ensure that the steel bar is correctly clamped and remains stable. When performing a bending test, the steel bar is placed on the clamping mechanism 3, and the support frame 21 provides stable support. The first hydraulic cylinder 22 is started by the controller to control the movement of the bending frame 23, and the steel bar is contacted through the bending frame 23 by applying force to bend the steel bar. The pressure sensor 24 is installed on the bending frame 23 to monitor the force applied to the steel bar. The laser rangefinder 25 is used to measure the displacement of the steel bar during the bending process to evaluate its bending performance.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A steel bar bending performance testing device, comprising a testing platform (1), characterized in that: The upper surface of the detection platform (1) is provided with a detection mechanism (2) for improving the detection effect of the bending performance of the steel bar, and the left and right sides of the detection mechanism (2) are provided with clamping mechanisms (3) for quickly bending and clamping the steel bar; The detection mechanism (2) comprises a support frame (21), a first hydraulic cylinder (22), a bending frame (23), a pressure sensor (24) and a laser rangefinder (25); the support frame (21) is fixed to the upper surface of the detection platform (1); the first hydraulic cylinder (22) is fixed to the middle of the upper surface of the support frame (21); the bending frame (23) is fixed to the outer side of the output shaft of the first hydraulic cylinder (22); the pressure sensor (24) is fixed to the inner top wall of the bending frame (23); and the laser rangefinder (25) is fixed to the middle of the upper surface of the detection platform (1).

2. The steel bar bending performance testing device according to claim 1, characterized in that: A controller is fixed on the front of the testing platform (1), and a storage drawer is provided on the right side of the front of the testing platform (1).

3. The steel bar bending performance testing device according to claim 1, characterized in that: The number of the pressure sensors (24) is no less than two and they are evenly distributed on the inner top wall of the bending frame (23).

4. The steel bar bending performance testing device according to claim 1, characterized in that: The laser rangefinder (25) and the output shaft of the first hydraulic cylinder (22) are located on the same central axis.

5. The steel bar bending performance testing device according to claim 1, characterized in that: The clamping mechanism (3) comprises two clamping frames (31), two clamping bases (32), two second hydraulic cylinders (33), two movable clamping blocks (34) and an auxiliary component (35). The two clamping frames (31) are respectively fixed to the left and right sides of the support frame (21), the two clamping bases (32) are respectively fixed to the inner bottom walls of the two clamping frames (31), the two second hydraulic cylinders (33) are respectively fixed to the upper surfaces of the two clamping frames (31), the two movable clamping blocks (34) are respectively fixed to the outer sides of the output shafts of the two second hydraulic cylinders (33), and the auxiliary component (35) is arranged on the opposite sides of the two clamping frames (31) to facilitate the adjustment of the steel bar clamping position.

6. The steel bar bending performance testing device according to claim 5, characterized in that: The auxiliary component (35) comprises two brackets (351), two rotating shafts (352) and two guide wheels (353); the two brackets (351) are respectively fixed to the opposite sides of the two clamping frames (31); the two rotating shafts (352) are rotatably connected to the front and rear inner walls of the two brackets (351) through bearings; and the two guide wheels (353) are respectively fixed to the outer sides of the two rotating shafts (352).

7. The steel bar bending performance testing device according to claim 5, characterized in that: The left and right sides of the two clamping frames (31) are both provided with clamping openings, and the opposite sides of the clamping base (32) and the movable clamping block (34) are both provided with clamping grooves (36).

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