Metal plate strength detection device

Abstract

The utility model provides a metal plate strength detection device which comprises a detection table, a bending strength detection assembly arranged in a protection box, an indication assembly arranged below a metal plate to be detected, and the metal plate to be detected in a placement cavity can be fixed by screwing down a fixing screw. Then the electric hydraulic push rod drives the pressing head to move downwards through the connecting plate, the metal plate to be detected can be pressed downwards to be bent, when the value of the pressure borne by the metal plate to be detected reaches the required value, the electric hydraulic push rod needs to be stopped to continue working, and therefore the bending strength of the metal plate to be detected is detected; when the to-be-detected metal plate is bent, the bent to-be-detected metal plate can apply synchronous downward pressure to the follow-up head, so that a worker can know the downward moving distance of the follow-up head by observing digital scale marks flush with the upper end face of the limiting blocking cover in the later period, the downward bending distance of the to-be-detected metal plate is obtained, and the to-be-detected metal plate is detected more comprehensively.

Description

Technical Field

[0001] This utility model relates to the field of metal sheet strength testing technology, specifically a metal sheet strength testing device. Background Technology

[0002] Metal sheet is a type of sheet material. Sheets are usually made into standard-sized flat rectangular building material panels, used as components for walls, ceilings, or floors. It also often refers to metal sheets that are forged, rolled, or cast. During the processing of metal sheets, appropriate strength testing devices are needed to sample and test the processed metal sheets so that staff can determine whether the bending strength of the batch of metal sheets produced is up to standard.

[0003] The metal strength testing device disclosed in announcement number "CN212989063U" uses an electric push rod connected inside the testing box to move a sliding plate up and down. The cooperation of the sliding groove and the slider ensures smoother movement of the sliding plate, making the testing block more stable during its movement and preventing wobbling. A pressure sensor embedded inside the testing block presses the metal until it bends. The pressure sensor detects the pressure and transmits the pressure data to the testing panel for display, thus achieving the effect of testing metal strength and avoiding the problem of low accuracy in metal testing.

[0004] However, the above technical solutions and existing technologies have the following drawbacks:

[0005] Although this strength testing device can detect the strength of metal by sensing pressure with a pressure sensor, it does not have the ability to indicate the deformation distance after the metal is bent. As a result, the device can only detect the bending strength of the metal, which has a limited detection range. Secondly, the device does not have a corresponding fixing structure to fix the metal placed on the first and second pads, which makes it very easy for the metal to shift and slip during the strength testing process, thus affecting the accuracy of the metal test and making it impractical. Utility Model Content

[0006] The purpose of this invention is to provide a metal sheet strength testing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A metal sheet strength testing device includes a protective door, a protective box, a metal sheet to be tested, and a testing platform. The protective box is fixedly connected to the upper surface of the testing platform, and a protective door is installed on the front surface of the protective box. The metal sheet to be tested is placed inside the protective box, and a bending strength testing component is provided inside the protective box for testing the bending strength of the metal sheet to be tested. An indicator component is provided below the metal sheet to be tested for indicating the deformation distance of the bent metal sheet to be tested.

[0009] Preferably, the bending strength testing assembly includes a support plate, a fixed support, fixing screws, a connecting plate, an electro-hydraulic push rod, a pressing head, and a digital pressure sensor. Digital pressure sensors are symmetrically installed on the left and right sides of the upper surface of the testing platform. A support plate is installed on the upper surface of each digital pressure sensor. Fixed supports are symmetrically fixedly connected to the left and right sides of the upper surface of the support plate. Fixing screws are installed on the upper surface of each fixed support. An electro-hydraulic push rod is installed on the upper side of the inner wall of the protective box. A connecting plate is installed at the lower end of the electro-hydraulic push rod. A pressing head is located at the middle of the lower surface of the connecting plate.

[0010] Preferably, the indicating component includes a follower head, a limiting cylinder, a follower plate, and a return spring. The limiting cylinder is fixedly connected to the middle position of the upper surface of the detection platform. A return spring is installed inside the limiting cylinder. A follower plate is installed on the upper side inside the limiting cylinder. A follower head is provided on the upper surface of the follower plate.

[0011] Preferably, the inner wall of the fixed support has a placement cavity, the inside of the support plate has a rectangular through cavity, and smart cameras are symmetrically installed on the left and right sides of the inner wall of the protective box.

[0012] Preferably, a limiting sleeve is provided on the right side of the upper surface of the connecting plate, a guide rod is provided inside the limiting sleeve, and the lower end of the pressing head is semi-circular.

[0013] Preferably, a limit cover is installed on the upper end face of the limiting cylinder, a blocking block is fixedly connected inside the limiting cylinder, a digital scale line is provided on the annular side of the follower head, and the follower head and the follower plate are an integral structure.

[0014] Preferably, an extension support plate is fixedly connected to the front side of the left end of the protective box, a digital display instrument is installed on the upper side of the front end of the extension support plate, a control panel is installed on the lower side of the front end of the extension support plate, a transparent observation window is provided on the front end of the protective door, and the protective door is an openable structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By tightening the fixing screws, the metal plate to be tested in the placement chamber can be fixed, preventing displacement and slippage during the testing process. Then, the electric hydraulic push rod drives the lower pressure head downward through the connecting plate, pressing down on the metal plate to bend it. During this process, the digital pressure sensor measures the pressure on the metal plate through the support plate and fixed support and transmits it to the digital display instrument in real time. The digital display instrument displays the pressure value transmitted by the digital pressure sensor for the staff to view. When the pressure value on the metal plate reaches the required value, the electric hydraulic push rod needs to be stopped to test the bending strength of the metal plate. At the same time, the intelligent camera can also monitor the inside of the protective box in real time, so that the staff in the monitoring room can remotely observe or replay the testing process, which is very practical.

[0017] 2. During the bending strength test of the metal plate under test, the bent metal plate will apply synchronous downward pressure to the follower head, causing the follower head to move downward together with the metal plate under test. When the metal plate under test stops bending downward, the follower head will also stop moving downward. Then, the operator only needs to observe the digital scale line flush with the upper surface of the limit cover to know the downward movement distance of the follower head, thereby determining the downward bending distance of the metal plate under test, thus enabling a more comprehensive test of the metal plate under test. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a structural diagram of the bending strength detection component and the indicator component in this utility model;

[0020] Figure 3 This is a front cross-sectional view of the bending strength detection component and the indicator component in this utility model;

[0021] Figure 4 This is a partial structural diagram of the bending strength detection component in this utility model;

[0022] Figure 5 for Figure 3 A magnified view of A in the middle.

[0023] In the diagram: 1. Protective door; 11. Transparent observation window; 2. Protective box; 21. Extension support plate; 22. Digital display instrument; 23. Control panel; 3. Metal plate to be tested; 4. Testing table; 51. Support plate; 52. Fixed support; 53. Placement cavity; 54. Smart camera; 55. Fixing screw; 56. Connecting plate; 57. Limit sleeve; 58. Electro-hydraulic push rod; 59. Downward pressure head; 511. Rectangular cavity; 512. Digital pressure sensor; 513. Guide rod; 61. Follower head; 62. Limit cover; 63. Limit cylinder; 64. Follower plate; 65. Return spring; 66. Blocking block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution:

[0026] Example 1:

[0027] A metal sheet strength testing device includes a protective door 1, a protective box 2, a metal sheet 3 to be tested, and a testing platform 4. The protective box 2 is fixedly connected to the upper surface of the testing platform 4, and the protective door 1 is installed on the front surface of the protective box 2. The protective box 2 and the protective door 1 can protect the surrounding personnel and prevent metal fragments from flying out during the strength testing of the unqualified metal sheet 3 from injuring the surrounding personnel. The protective door 1 is an openable structure, which makes it convenient for personnel to open and close it. The metal sheet 3 to be tested is placed inside the protective box 2. A transparent observation window 11 is provided on the front surface of the protective door 1. The transparent observation window 11 is made of explosion-proof glass. The transparent observation window 11, made of explosion-proof glass, allows personnel to observe the inside of the protective box 2 in real time, while also preventing it from being easily broken or damaged by flying metal fragments.

[0028] The protective box 2 is equipped with a bending strength detection component, which is used to detect the bending strength of the metal plate 3 to be tested. An indicator component is provided below the metal plate 3 to be tested, which is used to indicate the deformation distance of the metal plate 3 after bending.

[0029] The bending strength testing assembly includes a support plate 51, a fixed support 52, fixing screws 55, a connecting plate 56, an electro-hydraulic push rod 58, a lower pressure head 59, and a digital pressure sensor 512. Digital pressure sensors 512 are symmetrically installed on the left and right sides of the upper surface of the testing table 4. The digital pressure sensors 512 are connected to a digital display instrument 22 via signal lines. During operation, the digital pressure sensors 512 can measure the pressure on the support plate 51. The support plate 51 is installed on the upper surface of the digital pressure sensor 512, and the support plate 51 is connected to the fixed support 52 by welding. The support plate 51 can measure the pressure on the support plate 51. The fixed support 52 provides support. The fixed support 52 is symmetrically fixed to the left and right sides of the upper end face of the support plate 51. The fixed support 52 can support the metal plate 3 to be tested. The fixed support 52 is equipped with a fixing screw 55 on the upper end face of the fixed support 52. The fixing screw 55 is a high-strength bolt. The high-strength bolt 55 can not only position the metal plate 3 to be tested placed in the fixed support 52, but also has high strength, which can prevent easy breakage during use. An electric hydraulic push rod 58 is installed on the upper side of the inner wall of the protective box 2. When working, the electric hydraulic push rod 58 can drive the connecting plate 56 to move up and down.

[0030] A connecting plate 56 is installed at the lower end of the electric hydraulic push rod 58. The connecting plate 56 is connected to the limiting sleeve 57 and the pressing head 59 by welding. The connecting plate 56 can support the pressing head 59. The pressing head 59 is located at the middle of the lower end face of the connecting plate 56. The lower end of the pressing head 59 is semi-circular. When the pressing head 59 moves downward, it can press down on the metal plate 3 to be tested to perform bending strength testing. The inner wall of the fixed support 52 has a placement cavity 53. The placement cavity 53 facilitates the placement of the metal plate 3 to be tested inside the fixed support 52. A rectangular cavity 511 is provided inside the plate 51. The front and back width of the rectangular cavity 511 is greater than the front and back width of the metal plate 3 to be tested. The rectangular cavity 511 can not only prevent the support plate 51 from obstructing the downward bending of the metal plate 3 to be tested, but also facilitate the staff to observe the downward movement distance of the follower head 61. Smart cameras 54 are symmetrically installed on the left and right sides of the inner wall of the protective box 2. The smart cameras 54 are connected to the external monitoring system through data cables. When working, the smart cameras 54 can monitor the inside of the protective box 2 in real time, so that the staff can remotely observe or replay the testing process.

[0031] A limit sleeve 57 is provided on the right side of the upper end face of the connecting plate 56. A guide rod 513 is provided inside the limit sleeve 57. The guide rod 513 is connected to the protective box 2 by welding. The guide rod 513 and the limit sleeve 57 are matched to prevent the connecting plate 56 from shaking or shifting during lifting and lowering, thus ensuring the stability of the connecting plate 56. An extension support plate 21 is fixedly connected to the front side of the left end face of the protective box 2. The extension support plate 21 supports the digital display instrument 22 and the control panel 23. A number of... The digital display instrument 22 can display the pressure value transmitted by the digital pressure sensor 512 in real time during operation, so that the operator can observe it. The control panel 23 is installed on the lower side of the front end face of the extension support plate 21. The control panel 23 is connected to the electric hydraulic push rod 58 through wires. The control panel 23 makes it convenient for the operator to control the operation of the electric hydraulic push rod 58. Since the internal detailed structure and working principle of the digital pressure sensor 512 and the control panel 23 are relatively mature technologies in the prior art, they will not be described in detail here.

[0032] Example 2:

[0033] Based on Example 1, in this example, during the bending strength test of the metal plate 3 under test, the bent metal plate 3 will apply synchronous downward pressure to the follower head 61, causing the follower head 61 and the metal plate 3 under test to move downward together. When the metal plate 3 under test stops bending downward, the follower head 61 will also stop moving downward. Then, the operator only needs to observe the digital scale line flush with the upper surface of the limit cover 62 to know the downward movement distance of the follower head 61, thereby obtaining the downward bending distance of the metal plate 3 under test, thus enabling a more comprehensive test of the metal plate 3 under test.

[0034] The indicating assembly includes a follower head 61, a limiting cylinder 63, a follower plate 64, and a return spring 65. A limiting cylinder 63 is fixedly connected to the middle position of the upper end face of the detection platform 4. The limiting cylinder 63 can limit the follower plate 64 and the return spring 65. The return spring 65 is installed inside the limiting cylinder 63, and it can apply an upward pressing force to the follower plate 64 so that the follower head 61 automatically returns to its original position when no external pressing force is applied. The follower plate 64 is installed on the upper side inside the limiting cylinder 63, and the follower head 61 is provided on the upper end face of the follower plate 64. The follower head 61 and the follower plate 64 are an integral structure, and the follower plate 64 can support the follower head 61. After the follower head 61 moves to its position, its upper end face can fit against the lower end face of the metal plate 3 to be tested. A limit cover 62 is installed on the upper end face of the limit cylinder 63. The limit cover 62 can block and limit the follower piece 64 to prevent the follower piece 64 from slipping during use. A blocking block 66 is fixedly connected inside the limit cylinder 63. The blocking block 66 can block and limit the downward movement range of the follower piece 64 to prevent the return spring 65 from being damaged due to excessive compression force in the event of operator error. A digital scale line is provided on the annular side of the follower head 61. The digital scale line makes it convenient for the operator to observe and record the downward movement distance of the follower head 61.

[0035] Working principle: During the use of this device, the operator first opens the protective door 1 and places the metal plate 3 to be tested into the placement cavity 53 inside the fixed support 52. During this process, the metal plate 3 to be tested must be directly below the pressure head 59. After placement, use an external wrench to tighten the fixing screws 55 on both sides to secure the metal plate 3 in the placement cavity 53, preventing displacement or slippage during testing. Then, the protective door 1 can be closed, and the power can be controlled via the control panel 23. The electric hydraulic push rod 58 extends, causing the lower pressure head 59 to move downwards via the connecting plate 56, pressing down on the metal plate 3 to bend it. During this process, the digital pressure sensor 512 measures the pressure on the metal plate 3 via the support plate 51 and the fixed support 52 and transmits the data in real time to the digital display instrument 22, allowing operators to view the pressure values ​​displayed on the instrument. Once the pressure on the metal plate 3 reaches the required value, the electric hydraulic push rod 58 stops working. The bending strength of the metal plate 3 is tested, and the intelligent camera 54 can also monitor the inside of the protective box 2 in real time, so that the staff in the monitoring room can remotely observe or replay the testing process. At the same time, the bent metal plate 3 will apply synchronous downward pressure to the follower head 61, causing the follower head 61 and the metal plate 3 to move downward together. So that the staff can open the protective door 1 and observe the digital scale line flush with the upper end of the limit cover 62 to know the downward movement distance of the follower head 61, and thus determine the downward bending distance of the metal plate 3. A more comprehensive inspection is then conducted on the metal plate 3 to be tested. After the inspection is completed, the staff first controls the electric hydraulic push rod 58 to drive the lower pressure head 59 to move upward through the connecting plate 56. Then, with the help of an external wrench, the fixing screws 55 on the left and right sides are loosened. At this time, the tested metal plate 3 can be removed. During this process, when the tested metal plate 3 is separated from the follower head 61, under the squeezing force of the return spring 65, the follower plate 64 will drive the follower head 61 to automatically move upward to the initial position so as to measure the bending distance of the next set of tested metal plates 3.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal plate strength detection device, comprising a protective door (1), a protective box (2), a metal plate to be detected (3) and a detection table (4), characterized in that: The upper end face of the detection table (4) is fixedly connected with a protection box (2), the front end face of the protection box (2) is provided with a protection door (1), the inside of the protection box (2) is placed with a to-be-tested metal plate (3), the inside of the protection box (2) is provided with a bending strength detection assembly, and the bending strength detection assembly is used for detecting the bending strength of the to-be-tested metal plate (3), and the lower side of the to-be-tested metal plate (3) is provided with an indicating assembly, and the indicating assembly is used for indicating the deformation distance of the to-be-tested metal plate (3) after bending.

2. The metal sheet strength detection device according to claim 1, characterized in that: The bending strength detection assembly comprises a supporting plate (51), a fixed support (52), a fixed screw (55), a connecting plate (56), an electric hydraulic push rod (58), a pressing head (59) and a digital pressure sensor (512), the upper end face of the detection table (4) is symmetrically provided with the digital pressure sensor (512) on the left and right sides, the upper end face of the digital pressure sensor (512) is provided with the supporting plate (51), the left and right sides of the upper end face of the supporting plate (51) are fixedly connected with the fixed support (52), the upper end face of the fixed support (52) is provided with the fixed screw (55), the inner wall of the protection box (2) is provided with the electric hydraulic push rod (58) on the upper side, the lower end of the electric hydraulic push rod (58) is provided with the connecting plate (56), and the lower end face of the connecting plate (56) is provided with the pressing head (59).

3. The metal sheet strength detection device according to claim 1, characterized in that: The indicating assembly comprises a follow-up head (61), a limiting cylinder (63), a follow-up sheet (64) and a reset spring (65), the upper end face of the detection table (4) is fixedly connected with the limiting cylinder (63) in the middle position, the inside of the limiting cylinder (63) is provided with the reset spring (65), the inside of the limiting cylinder (63) is provided with the follow-up sheet (64) on the upper side, and the upper end face of the follow-up sheet (64) is provided with the follow-up head (61).

4. The metal sheet strength detection device according to claim 2, characterized in that: The inner wall of the fixed support (52) is provided with a placing cavity (53), the inside of the supporting plate (51) is provided with a rectangular through cavity (511), and the inner wall of the protection box (2) is symmetrically provided with an intelligent camera (54) on the left and right sides.

5. The metal sheet strength detection device according to claim 2, characterized in that: The right side of the upper end face of the connecting plate (56) is provided with a limiting sleeve (57), the inside of the limiting sleeve (57) is provided with a guide rod (513), and the lower end of the pressing head (59) is semicircular.

6. The metal sheet strength detection device according to claim 3, characterized in that: The upper end face of the limiting cylinder (63) is provided with a limiting cover (62), the inside of the limiting cylinder (63) is fixedly connected with a blocking block (66), the annular side face of the follow-up head (61) is provided with a digital scale line, and the follow-up head (61) and the follow-up sheet (64) are of an integral structure.

7. The metal sheet strength detection device according to claim 1, characterized in that: The left end face of the protection box (2) is fixedly connected with an extension support plate (21) on the front side, the front end face of the extension support plate (21) is provided with a digital display instrument (22) on the upper side, the front end face of the extension support plate (21) is provided with a control panel (23) on the lower side, the front end face of the protection door (1) is provided with a transparent observation window (11), and the protection door (1) is of a openable and closable structure.

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