Cold bending test device and method capable of observing bending cracking of welding position of steel plate

Abstract

The invention discloses a cold bending test device and method capable of observing bending cracking of a welding position of a steel plate, and the cold bending test device comprises a bending test machine bottom plate, a bending test machine left side supporting column, a bending test machine right side supporting column, a sample, a downward pressure head of the bending test machine, a main camera device, a rear camera device and a front camera device. The camera devices are embedded, so that the main camera is installed, the shooting angles of the rear camera device and the front camera device are driven by the angle adjusting mechanism to be adjusted and controlled subsequently, the video monitoring controller is started when the continuous bending test is started, and the focusing angle is adjusted in the controller. The appearance of the front side edge, the rear side edge and the bottom edge plate surface of a pressed sample can be observed through the three camera devices, when a crack is found, the test can be stopped, the sample can be taken down, the bending angle can be tested, the information of the crack part can be observed, and the camera devices in the device are small in investment, simple in structure and good in practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cold bending test of metal materials, and particularly to a cold bending test device and method for observing bending cracking of a steel plate at a welding position. BACKGROUND

[0002] According to the national standard, a sample is bent to be parallel to two arms under the action of force, and cracking occurs during the bending process, and the test is continued until the sample is crushed. Generally, the bending test does not stop in the middle or the test is interrupted immediately after cracking. When studying the bending capacity of a steel plate at a welding position, it is necessary to understand that the steel plate cracks at a certain angle at the welding position, or the test is interrupted immediately after the welding cracks during the test. Currently, there is no equipment on the testing machine that can complete the observation of the cracking of the welding metal. SUMMARY

[0003] The present application aims to provide a cold bending test device and method for observing bending cracking of a steel plate at a welding position, which solves the problem that the existing testing machine is inconvenient for observing the welding of metal.

[0004] To achieve this purpose, the present application adopts the following technical solutions: A cold bending test device and method for observing bending cracking of a steel plate at a welding position, comprising a bending test machine bottom plate, a bending test machine left side support column, a bending test machine right side support column, a sample, a bending test machine downward pressure head, a main camera device, a rear camera device and a front camera device, the top ends of the two sides of the bending test machine bottom plate are respectively connected to the bottom ends of the bending test machine left side support column and the bending test machine right side support column, the top ends of the bending test machine left side support column and the bending test machine right side support column are fixedly connected with support columns, four support columns are fixedly installed with a support plate, an installation through hole is formed in the top end of the support plate, and a bending test machine downward pressure head is fixedly installed in the installation through hole. Both ends of the bending test machine bottom plate are fixedly connected with extension plates, and a rear camera device and a front camera device are installed at the top ends of the two extension plates through angle adjusting mechanisms. The top end of the bending test machine bottom plate is fixedly installed with a main camera device, the top end of the bending test machine bottom plate is fixedly connected with two stabilizing plates, and a camera protection cover cleaning mechanism is fixedly installed between the two stabilizing plates.

[0005] Preferably, the angle adjusting mechanism comprises an extension block, one end of the extension block is fixedly connected with the top end of the extension plate, the top end of the extension block is fixedly connected with a mounting plate, a circular arc plate is fixedly installed between the mounting plate and the extension block, circular arc grooves are formed at both ends of the circular arc plate, circular arc sliders are slidably connected in the two circular arc grooves, moving plates are fixedly connected at one end of the two circular arc sliders, an adjusting plate is fixedly connected between one end of the two moving plates, one end of the adjusting plate is connected with the rear camera, moving blocks are fixedly connected at one end of the two moving plates, one end of one of the moving blocks is provided with a motor groove, a first motor is fixedly connected at one end in the motor groove, a rotating gear is fixedly connected to the output end of the first motor, a circular arc rack is fixedly installed in the circular arc plate, and the circular arc rack is engaged with the rotating gear.

[0006] Preferably, the camera cover cleaning mechanism comprises a second motor, both ends of the two stabilizing plates are rotatably connected with shafts, a cleaning arc plate is fixedly connected between the two shafts, a cleaning brush is fixedly installed at one end of the cleaning arc plate, one end of one of the stabilizing plates is provided with a mounting groove, one end in the mounting groove is fixedly connected with one end of the second motor, one end of one of the shafts extends to the outside of the stabilizing plate, transmission gears are fixedly connected to the output end of the second motor and one end of one of the shafts, and the two transmission gears are engaged with each other.

[0007] Preferably, the bottom end of the bottom plate of the bending tester is fixedly connected with stabilizing support feet at four corners.

[0008] Preferably, the main camera, the rear camera and the front camera are electrically connected with a video monitoring controller through a data line.

[0009] Preferably, the top end of the left side supporting column of the bending tester and the top end of the right side supporting column of the bending tester are fixedly installed with anti-skid lines.

[0010] Compared with the prior art, the present application has the following beneficial effects: The cold bending test device and method for observing bending cracking of a steel plate welding position, after the bending testing machine is started, a downward pressing head of the bending testing machine moves towards the sample, when the sample is contacted, the testing machine increases the pressing force to press and bend the sample, the left and right support columns further press and flatten the bent sample, a camera device is embedded through a hole in the bottom plate of the bending testing machine to install the main camera, and subsequently, the shooting angles of the rear camera device and the front camera device are adjusted and controlled through the angle adjusting mechanism, the video monitoring controller is started when the continuous bending test is started, the angle of focusing is adjusted in the controller, and the top and bottom surfaces of the sample before and after being pressed can be observed through the three camera devices, when the crack is found, the test can be stopped, and the sample can be taken out, the bending angle can be tested, and the information of the cracking position can be observed, the camera device in the device has small investment, simple structure and good practicability. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0012] The structures, proportions, sizes, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0013] Figure 1 It is a front view schematic diagram of the cold bending test device and method for observing bending cracking of a steel plate welding position; Figure 2 It is a right view sectional schematic diagram of the cold bending test device and method for observing bending cracking of a steel plate welding position; Figure 3 It is a schematic diagram of the bending testing machine bottom plate of the cold bending test device and method for observing bending cracking of a steel plate welding position; Figure 4 It is a schematic diagram of the circular arc plate without a moving block of the cold bending test device and method for observing bending cracking of a steel plate welding position; Figure 5 It is a bottom view schematic diagram of the circular arc plate of the cold bending test device and method for observing bending cracking of a steel plate welding position; Figure 6 It is a cold bending test device and method for observing bending cracking of a steel plate welding positionFigure 2 a local enlarged view of the middle A; Figure 7 Cold bending test device and method for observing bending cracking at welded portion of steel plate Figure 3 a local enlarged view of the middle B.

[0014] Illustration: 1, bending tester bottom plate; 2, bending tester left side support column; 3, bending tester right side support column; 4, sample; 5, bending tester downward pressure head; 6, main camera; 7, rear camera; 8, front camera; 9, support column; 10, support plate; 11, extension plate; 12, stabilizing plate; 13, extension block; 14, mounting plate; 15, arc plate; 16, arc slider; 17, moving plate; 18, adjusting plate; 19, moving block; 20, first motor; 21, rotating gear; 22, arc rack; 23, second motor; 24, rotating shaft; 25, cleaning arc plate; 26, cleaning brush; 27, transmission gear; 28, stabilizing support foot. DETAILED DESCRIPTION

[0015] In order to make the inventive purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0017] The technical solutions of the present application will be further described below in conjunction with the drawings and through specific embodiments.

[0018] The embodiment of the present application provides a cold bending test device and method for observing bending cracking of a steel plate welding position, which comprises a bending tester bottom plate 1, a bending tester left side support column 2, a bending tester right side support column 3, a sample 4, a bending tester downward pressing head 5, a main camera 6, a rear camera 7 and a front camera 8, the top ends of the bending tester bottom plate 1 are connected with the bottom ends of the bending tester left side support column 2 and the bending tester right side support column 3 respectively, the top ends of the bending tester left side support column 2 and the bending tester right side support column 3 are fixedly connected with support columns 9, support plates 10 are fixedly installed between the four support columns 9, the top end of the support plate 10 is provided with an installation through hole, the inside of the installation through hole is fixedly installed with the bending tester downward pressing head 5, the main camera 6, the rear camera 7 and the front camera 8 are electrically connected with a video monitoring controller through a data line, the bending tester downward pressing head 5 moves to the sample 4 after the bending tester is started, the pressing force of the bending tester is increased when the sample 4 is contacted, the sample 4 is bent, the left side support column and the right side support column further flatten the bent sample, the bending tester bottom plate 1 is drilled, the camera is embedded, the main camera is installed in this way, the shooting angle of the rear camera 7 and the front camera 8 is adjusted through a subsequent angle adjusting mechanism, the video monitoring controller is started when the continuous bending test is started, the angle of focusing is adjusted in the controller, the front and rear side edges and the bottom edge plate of the sample 4 can be observed through the three cameras, when the crack is found, the test can be stopped, the sample 4 can be taken out, the bending angle can be tested, the information of the cracking position can be observed, the camera in the device has small investment, simple structure and good practicability. Both ends of the base plate 1 of the bending testing machine are fixedly connected to extension plates 11. A rear camera device 7 and a front camera device 8 are respectively mounted on the top ends of the two extension plates 11 via an angle adjustment mechanism. The angle adjustment mechanism includes an extension block 13, one end of which is fixedly connected to the top end of the extension plate 11. A mounting plate 14 is fixedly connected to the top end of the extension block 13. An arc plate 15 is fixedly installed between the mounting plate 14 and the extension block 13. Arc grooves are formed at both ends of the arc plate 15. Arc sliders 16 are slidably connected inside the two arc grooves. A moving plate 17 is fixedly connected to one end of each of the two arc sliders 16. An adjusting plate 18 is fixedly connected between the ends of the two moving plates 17. One end of the adjusting plate 18 is connected to the rear camera device 7. One end of each of the 17 is fixedly connected to a movable block 19, one end of which has a motor slot. The first motor 20 is fixedly connected to one end of the motor slot. The output end of the first motor 20 is fixedly connected to a rotating gear 21. An arc rack 22 is fixedly installed inside the arc plate 15. The arc rack 22 meshes with the rotating gear 21. When the first motor 20 is powered on, the output end of the first motor 20 will drive the rotating gear 21 to rotate. The rotating gear 21, in mesh with the arc rack 22, drives the arc slider 16, movable plate 17, movable block 19, rear camera device 7 and front camera device 8 to adjust the shooting angle. When the continuous bending test is started, the video monitoring controller is activated, and the focus angle is adjusted in the controller. A main camera device 6 is fixedly installed on the top of the base plate 1 of the bending test machine. Two stabilizing plates 12 are fixedly connected to the top of the base plate 1. A camera protective cover cleaning mechanism is fixedly installed between the two stabilizing plates 12. The camera protective cover cleaning mechanism includes a second motor 23. A rotating shaft 24 is rotatably connected to the ends of the two stabilizing plates 12 that are close to each other. A cleaning arc plate 25 is fixedly connected between the two rotating shafts 24. A cleaning brush 26 is fixedly installed on one end of the cleaning arc plate 25. One end of one stabilizing plate 12 has a mounting groove. One end of the mounting groove is fixedly connected to one end of the second motor 23. One end of one rotating shaft 24 extends to the outside of the stabilizing plate 12. The output end of the second motor 23 and one of the rotating shafts are connected to the stabilizing plate 12. One end of each of the 24 is fixedly connected to a transmission gear 27. The two transmission gears 27 mesh with each other to prevent debris from obstructing the main camera device 6 during bending. At this time, when the second motor 23 is powered on, the output end of the second motor 23 will drive the transmission gear 27 to rotate. Through the meshing of the transmission gear 27, the rotating shaft 24 will rotate, and the cleaning arc plate 25 and the cleaning brush 26 will rotate, so as to achieve the effect of cleaning the camera protective cover of the main camera device 6. The morphology of the front and rear sides and bottom edge of the pressed sample 4 can be observed through the three cameras. When a crack is found, the test can be stopped, the sample 4 can be removed, the bending angle can be tested, and the information of the cracked part can be observed.

[0019] It also needs to be explained that the bottom end of the four corners of the bending tester bottom plate 1 is fixedly connected with the stable support foot 28, which supports the overall device and improves the height of the overall device. The top end of the bending tester left side support column 2 and the bending tester right side support column 3 is fixedly installed with anti-skid lines. After the metal sample 4 is placed on the top end of the bending tester left side support column 2 and the bending tester right side support column 3, it provides certain placement anti-skid effect.

[0020] In summary, when the cold bending test device and method for observing the bending cracking of the welded part of the steel plate is used, the downward pressure head 5 of the bending tester moves towards the sample 4 after the bending tester is started. When the sample 4 is contacted, the tester increases the pressing force to bend the sample 4. The left side support column and the right side support column flatten the bent sample. The camera device is embedded in the hole of the bending tester bottom plate 1 to install the main camera. Subsequently, the first motor 20 is energized to start. The output end of the first motor 20 drives the rotating gear 21 to rotate. The rotating gear 21 drives the circular arc slider 16, the moving plate 17, the moving block 19, and the shooting angle of the rear camera device 7 and the front camera device 8 to be controlled under the meshing of the circular arc rack 22. The continuous bending test is started to start the video monitoring controller. The angle of focus is adjusted in the controller. The debris is prevented from shielding the shooting of the main camera device 6 during the bending process. At this time, the second motor 23 is energized to start. The output end of the second motor 23 drives the transmission gear 27 to rotate. The transmission gear 27 drives the rotating shaft 24 to rotate under the meshing, and drives the cleaning arc plate 25 and the cleaning brush 26 to rotate, so as to realize the cleaning effect of the camera protection cover of the main camera device 6. The three camera devices can observe the morphology of the front and rear side edges and the bottom edge of the sample 4. When the crack is found, the test can be stopped, and the sample 4 can be removed. The bending angle can be tested, and the information of the cracking part can be observed.

[0021] The above-described embodiments are merely used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cold bending test device and method for observing the bending cracking of a steel plate weld, comprising a bending tester base plate (1), a bending tester left side support column (2), a bending tester right side support column (3), a sample (4), a bending tester downward pressure head (5), a main camera (6), a rear camera (7), and a front camera (8), characterized in that, The top end of the bending tester bottom plate (1) is connected with the bottom end of the bending tester left side support column (2) and the bending tester right side support column (3) respectively, the top end of the bending tester left side support column (2) and the bending tester right side support column (3) is fixedly connected with a support column (9), four support columns (9) are fixedly installed with a support plate (10), the top end of the support plate (10) is provided with an installation through hole, the inside of the installation through hole is fixedly installed with a bending tester downward pressure head (5); Both ends of the bending tester bottom plate (1) are fixedly connected with an extension plate (11), the top end of the two extension plates (11) is respectively provided with a rear camera (7) and a front camera (8) through an angle adjusting mechanism; The top end of the bending tester bottom plate (1) is fixedly installed with a main camera (6), the top end of the bending tester bottom plate (1) is fixedly connected with two stabilizing plates (12), the two stabilizing plates (12) are fixedly installed with a camera protection cover cleaning mechanism.

2. A cold bend test apparatus and method for observing a bend cracking at a welded portion of a steel sheet according to claim 1, characterized in that, The angle adjusting mechanism comprises an extension block (13), one end of the extension block (13) is fixedly connected with the top end of the extension plate (11), the top end of the extension block (13) is fixedly connected with an installation plate (14), the installation plate (14) and the extension block (13) are fixedly installed with an arc plate (15), both ends of the arc plate (15) are provided with arc grooves, both ends of the arc grooves are slidably connected with arc sliding blocks (16), one end of the two arc sliding blocks (16) is fixedly connected with a moving plate (17), one end of the two moving plates (17) is fixedly connected with an adjusting plate (18), one end of the adjusting plate (18) is connected with the rear camera (7), one end of the two moving plates (17) is fixedly connected with a moving block (19), one end of the moving block (19) is provided with a motor groove, one end of the motor groove is fixedly connected with a first motor (20), the output end of the first motor (20) is fixedly connected with a rotating gear (21), the inside of the arc plate (15) is fixedly installed with an arc rack (22), the arc rack (22) is engaged with the rotating gear (21).

3. The cold bend test apparatus and method for observing a bend cracking at a welded portion of a steel plate according to claim 1, characterized in that, The camera protection cover cleaning mechanism comprises a second motor (23), one end of the two stabilizing plates (12) is rotatably connected with a rotating shaft (24), the two rotating shafts (24) are fixedly connected with a cleaning arc plate (25), one end of the cleaning arc plate (25) is fixedly installed with a cleaning brush (26), one end of the stabilizing plate (12) is provided with an installation groove, one end of the installation groove is fixedly connected with one end of the second motor (23), one end of the rotating shaft (24) extends to the outside of the stabilizing plate (12), the output end of the second motor (23) and one end of the rotating shaft (24) are fixedly connected with a transmission gear (27), the two transmission gears (27) are engaged with each other.

4. The cold bend test apparatus and method for observing a bend cracking at a welded portion of a steel plate according to claim 1, characterized in that, The bottom end of the bending tester bottom plate (1) is fixedly connected with a stabilizing support foot (28).

5. The apparatus and method for cold bend testing of a steel plate weld for observable bend cracking according to claim 1, wherein, The main camera (6), rear camera (7) and front camera (8) are electrically connected by data line with video monitoring controller.

6. The apparatus and method for cold bend testing of a steel plate weld for observable bend cracking according to claim 1, wherein, The top of the left support column (2) and the right support column (3) of the bending tester are fixedly installed with anti-skid lines; S1, after the bending tester is started, the downward pressure head (5) of the bending tester moves to the sample (4), and when the sample (4) is contacted, the tester increases the pressing force to press and bend the sample (4), and the left support column and the right support column further flatten the bent sample; S2, through the power-on starting of the first motor (20), the output end of the first motor (20) drives the rotating gear (21) to rotate, and the rotating gear (21) drives the circular arc slider (16), the moving plate (17), the moving block (19), and the shooting angle of the rear camera (7) and the front camera (8) to be controlled under the meshing of the circular arc rack (22), the continuous bending test is started, and the video monitoring controller is started, and the angle of focusing is adjusted in the controller; S3, prevent debris from blocking the shooting of the main camera (6) during the bending process, at this time, through the power-on starting of the second motor (23), the output end of the second motor (23) drives the transmission gear (27) to rotate, drives the rotating shaft (24) to rotate through the meshing of the transmission gear (27), and drives the cleaning arc plate (25) and the cleaning brush (26) to rotate, realizes the cleaning effect of the camera protection cover of the main camera (6), and through the three cameras, the appearance of the front and rear edges and the bottom edge of the sample (4) can be observed, when the crack is found, the test can be stopped, the sample (4) can be taken out, the bending angle can be tested, and the information of the cracking position can be observed.

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