A device for testing the mechanical properties of impact-resistant sheet metal

Abstract

This invention discloses a device for testing the mechanical properties of impact-resistant sheet metal, relating to the field of sheet metal testing technology. The invention includes a testing platform with a movable groove. A support structure is provided on the upper side of the movable groove to facilitate the placement of the sheet metal to be tested. A lead screw is installed within the movable groove, and two movable blocks are threaded onto the lead screw. A protective cover is fixed to the top of each movable block, and a movable rod is movably mounted on the protective cover. A first pressing plate is fixed to the inner end of the movable rod, and a spring connects the first pressing plate to the protective cover. Through the cooperation of the lead screw and the movable blocks, it is easy to adjust the two protective covers to move closer together, forming a closed structure outside the support structure. This prevents the sheet metal from breaking and splintering during testing, thus avoiding injury to personnel. As the protective covers move closer to the support structure, the cooperation of the movable rod and the spring causes the first pressing plates on both sides to clamp and limit the ends of the sheet metal, facilitating testing without requiring manual clamping by personnel.

Description

Technical Field

[0001] This invention belongs to the field of sheet metal testing technology, and in particular relates to a device for testing the mechanical properties of impact-resistant sheet metal. Background Technology

[0002] Sheet metal is a standard-sized, flat, rectangular building material used in the construction industry for components of walls, ceilings, or floors. It also refers to metal sheets that are forged, rolled, or cast. Sheets are classified as thin, medium, thick, and extra-thick. They are typically made into standard-sized, flat, rectangular building materials. Various types of sheet metal are used in construction projects, such as wood-based sheets, metal sheets, plastic sheets, and various composite sheets. To meet building safety and requirements, impact-resistant sheet metal is often used. After the impact-resistant sheet metal is manufactured, testing equipment is used to test its impact resistance, compressive strength, and other mechanical properties to ensure that the quality of the sheet metal meets the usage requirements.

[0003] Currently, most existing testing devices require staff to manually clamp and fix the plates when conducting mechanical property tests on impact-resistant plates. After the test, the plates are removed by staff, which is a cumbersome operation that affects testing efficiency. Furthermore, the lack of corresponding protective structures means that if the plates break during the test, debris can easily fly out and cause injury to people, resulting in poor protection.

[0004] To address this issue, we designed a device for testing the mechanical properties of impact-resistant sheet metal. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a device for testing the mechanical properties of impact-resistant sheet metal, comprising a testing platform with a movable groove, a support structure on the upper side of the movable groove, a lead screw inside the movable groove, two movable blocks threaded onto the lead screw, a protective cover fixed to the top of the movable blocks, a movable rod movably mounted on the protective cover, a first extrusion plate fixed to one inner end of the movable rod, a spring connecting the first extrusion plate and the protective cover, and hydraulic components on both the front and rear sides of the protective cover.

[0007] A mounting frame is fixed to the rear surface of the testing platform. A disc is fixed to the front top of the mounting frame. A testing mechanism is installed on the disc. A semi-circular through slot is opened on the side of the top of each of the two protective covers that are close to each other. A semi-circular plate is fixed to one side of the top of the protective cover and cooperates with the through slot. The disc cooperates with the upper end of the semi-circular plate.

[0008] The hydraulic assembly includes a first sleeve, two first sleeves respectively disposed on the front and rear sides of the protective cover, a second sleeve disposed on one side of the first sleeve, a first piston rod and a second piston rod respectively movably disposed inside the first sleeve and the second sleeve, a connecting pipe connecting the ends of the first sleeve and the second sleeve away from the protective cover, the first sleeve and the second sleeve are both filled with hydraulic oil, the inner ends of the first piston rod and the second piston rod both extend to the inner side of the protective cover, and a connecting rod is hinged between the first piston rod and the first extrusion plate, and the inner end of the second piston rod is fixed to the second extrusion plate.

[0009] Both the first piston rod and the second piston rod have T-shaped cross-sections, and both the first piston rod and the second piston rod slide in conjunction with the protective cover.

[0010] The spring is sleeved on the outside of the movable rod, and the end of the movable rod away from the first extrusion plate extends to the outside of the protective cover and is fixedly connected to the limit plate. A transparent plate is provided on the upper side of the front surface of the protective cover.

[0011] A mounting plate is fixed at the center of the upper surface of the testing platform, a displacement sensor is mounted on the upper surface of the mounting plate, and a camera is mounted on the top of the inner side of the protective cover.

[0012] The detection mechanism includes a hydraulic push rod, which is installed on the top of the disc. The telescopic end of the hydraulic push rod passes through the bottom of the disc and is connected to a pressure sensor. An impact plate is provided at the bottom of the pressure sensor, and the impact plate is positioned directly above the displacement sensor.

[0013] The support structure includes a U-shaped frame, with two U-shaped frames arranged opposite each other on the left and right sides of the mounting plate, and the U-shaped frames spanning across the upper side of the movable groove. The bottom of the U-shaped frame is fixedly connected to the testing table, and a support block is fixed to the top of the U-shaped frame.

[0014] Two support rods are fixed inside the movable groove. The two support rods are arranged opposite each other on both sides of the lead screw. The support rods pass through the movable block. The movable block and the support rods are slidably engaged. The internal thread grooves of the two movable blocks are in opposite directions. A servo motor is installed at the right end of the detection table. The output end of the servo motor is connected to the right end of the lead screw.

[0015] The present invention has the following beneficial effects:

[0016] The present invention facilitates the placement of the test plate through a support structure. With the threaded engagement of the lead screw and the movable block, it is easy to adjust the two movable blocks to move closer to each other, thereby driving the two protective covers to move towards the center until the two protective covers are in contact with each other, forming a closed box structure on the outside of the plate, achieving the purpose of isolation and protection, and effectively preventing the plate from breaking and causing debris to fly out during the testing process, which could cause injury to the human body.

[0017] During the process of the two protective covers moving towards the center, the first extrusion plate first contacts the end of the plate. Combined with the movement of the movable rod and the protective cover, it facilitates the continuous movement of the protective cover. With the elasticity of the spring, the first extrusion plate is tightly pressed against the end of the plate, achieving the purpose of limiting and clamping both ends of the plate.

[0018] The connecting rod's hinged ends to the first extrusion plate and the first piston rod, during the process of the protective cover moving towards the center, combined with the first extrusion plate abutting against the end of the plate, compress the first piston rod into the first sleeve. This causes the hydraulic oil inside the first sleeve to flow into the second sleeve through the connecting pipe, pushing the second piston rod outward from the second sleeve. This, in turn, moves the second extrusion plate closer to the plate until it abuts against the side of the plate, limiting and clamping the front and rear sides of the plate. This further ensures the stability of the plate, facilitating subsequent testing operations. It eliminates the need for manual clamping and fixing of the plate by personnel, saving time and effort and ensuring efficient plate testing.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the structure of the mid-section AA;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure of the mid-section BB;

[0025] Figure 5 for Figure 1 Enlarged structural diagram at point C;

[0026] Figure 6 for Figure 3 Enlarged structural diagram at point D;

[0027] Figure 7 for Figure 4 Enlarged structural diagram at point E;

[0028] Figure 8 A schematic diagram of the bottom structure of the present invention.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Testing table; 2. Movable groove; 3. Lead screw; 4. Movable block; 5. Protective cover; 6. Movable rod; 7. First extrusion plate; 8. Spring; 9. First sleeve; 10. Second sleeve; 11. Connecting pipe; 12. First piston rod; 13. Second piston rod; 14. Connecting rod; 15. Second extrusion plate; 16. Semi-circular plate; 17. Fixing frame; 18. Disc; 19. Transparent plate; 20. Limiting plate; 21. Mounting plate; 22. Displacement sensor; 23. Hydraulic push rod; 24. Pressure sensor; 25. Impact plate; 26. U-shaped frame; 27. Support block; 28. Support rod; 29. ​​Servo motor; 30. Camera. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "upper," "middle," "outer," "inner," etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0033] Please see Figures 1-8 As shown, the present invention is a mechanical property testing device for impact-resistant sheet metal, including a testing table 1, a movable groove 2 on the testing table 1, a support structure on the upper side of the movable groove 2, a lead screw 3 inside the movable groove 2, two movable blocks 4 threaded on the lead screw 3, a protective cover 5 fixed on the top of the movable blocks 4, a movable rod 6 movably mounted on the protective cover 5, a first extrusion plate 7 fixed to one end of the movable rod 6 near the inner side, a spring 8 connecting the first extrusion plate 7 and the protective cover 5, and hydraulic components on both the front and rear sides of the protective cover 5.

[0034] A mounting bracket 17 is fixed to the rear surface of the testing table 1. A disc 18 is fixed to the front top of the mounting bracket 17. A testing mechanism is installed on the disc 18. A semi-circular through groove is opened on the side of the top of the two protective covers 5 that are close to each other. A semi-circular plate 16 is fixed to one side of the top of the protective cover 5 and cooperates with the through groove. The disc 18 cooperates with the upper end of the semi-circular plate 16.

[0035] In the above structure, the support structure facilitates the placement of the plate to be tested. With the threaded engagement of the lead screw 3 and the movable block 4, it is easy to adjust the two movable blocks 4 to move closer to each other, thereby driving the two protective covers 5 to move closer to the center until the two protective covers 5 are in contact with each other, forming a closed box structure on the outside of the plate, achieving the purpose of isolation and protection, and effectively preventing the plate from breaking and splintering during the testing process, which could cause injury to the human body.

[0036] During the process of the two protective covers 5 moving towards the center, the first pressing plate 7 first contacts the end of the plate. Combined with the movement of the movable rod 6 and the protective cover 5, the protective cover 5 can move continuously. With the elasticity of the spring 8, the first pressing plate 7 is tightly pressed against the end of the plate, achieving the purpose of limiting and clamping both ends of the plate. This facilitates the implementation of subsequent testing operations, eliminating the need for staff to manually clamp and fix the plate, saving time and effort, and ensuring the testing efficiency of the plate.

[0037] The hydraulic assembly includes a first sleeve 9, two first sleeves 9 respectively disposed on the front and rear sides of the protective cover 5, a second sleeve 10 disposed on one side of the first sleeve 9, a first piston rod 12 and a second piston rod 13 respectively movably disposed inside the first sleeve 9 and the second sleeve 10, a connecting pipe 11 connecting the ends of the first sleeve 9 and the second sleeve 10 away from the protective cover 5, the first sleeve 9 and the second sleeve 10 are both filled with hydraulic oil, the inner ends of the first piston rod 12 and the second piston rod 13 both extend to the inner side of the protective cover 5, and a connecting rod 14 is hinged between the first piston rod 12 and the first extrusion plate 7, the inner end of the second piston rod 13 is fixed to the second extrusion plate 15, the cross-section of the first piston rod 12 and the second piston rod 13 are both T-shaped structures, and the first piston rod 12 and the second piston rod 13 are both in sliding fit with the protective cover 5.

[0038] Through the hinged connection between the two ends of the connecting rod 14 and the first extrusion plate 7 and the first piston rod 12, as the protective cover 5 moves toward the center, the first extrusion plate 7 abuts against the end of the plate, thereby squeezing the first piston rod 12 into the first sleeve 9. This causes the hydraulic oil inside the first sleeve 9 to flow into the second sleeve 10 through the connecting pipe 11, pushing the second piston rod 13 outward from the second sleeve 10. This, in turn, drives the second extrusion plate 15 to move toward the plate until the second extrusion plate 15 abuts against the side of the plate, thus limiting and clamping the front and rear sides of the plate and further ensuring the stability of the plate.

[0039] Spring 8 is sleeved on the outside of movable rod 6. The end of movable rod 6 away from the first compression plate 7 extends to the outside of protective cover 5 and is fixedly connected to limit plate 20. A transparent plate 19 is provided on the upper side of the front surface of protective cover 5 to facilitate real-time observation of the progress of detection work.

[0040] A mounting plate 21 is fixed at the center of the upper surface of the testing table 1. A displacement sensor 22 is installed on the upper surface of the mounting plate 21 to monitor the degree of deformation of the plate and determine whether the plate meets the usage standards. A camera 30 is installed on the top inside the protective cover 5 to record the testing process.

[0041] The detection mechanism includes a hydraulic push rod 23, which is installed on the top of the disc 18. The telescopic end of the hydraulic push rod 23 passes through the bottom of the disc 18 and is connected to a pressure sensor 24. An impact plate 25 is provided at the bottom of the pressure sensor 24, and the impact plate 25 is positioned directly above the displacement sensor 22.

[0042] The support structure includes a U-shaped frame 26. Two U-shaped frames 26 are arranged opposite each other on the left and right sides of the mounting plate 21, and the U-shaped frames 26 span across the upper side of the movable groove 2. The bottom of the U-shaped frame 26 is fixedly connected to the testing table 1, and a support block 27 is fixed on the top of the U-shaped frame 26.

[0043] Two support rods 28 are fixed inside the movable groove 2. The two support rods 28 are arranged opposite each other on both sides of the lead screw 3. The support rods 28 pass through the movable block 4. The movable block 4 slides with the support rods 28, which effectively limits and guides the movable block 4, ensuring the stability of the movement of the two movable blocks 4, and thus ensuring the stability of the movement of the protective cover 5. The internal thread grooves of the two movable blocks 4 are in opposite directions. A servo motor 29 is installed on the right end of the detection table 1. The output end of the servo motor 29 is connected to the right end of the lead screw 3.

[0044] Example:

[0045] In the initial state, the two protective covers 5 are located at the two ends of the movable groove 2 respectively. When testing the mechanical properties of the board, the board to be tested is first placed on top of the two support blocks 27, and then the servo motor 29 is started.

[0046] The servo motor 29 drives the lead screw 3 to rotate. With the threaded engagement between the movable block 4 and the lead screw 3, combined with the opposite directions of the internal thread grooves of the two movable blocks 4 and the sliding engagement between the movable block 4 and the support rod 28, the two movable blocks 4 are driven to move steadily closer to each other, which in turn drives the two protective covers 5 to move steadily towards the center until the two protective covers 5 are fitted together, forming a closed box-like structure on the outside of the board. This prevents the board from breaking during the testing process, causing debris to fly out and injure the staff, and effectively improves the safety of the board mechanical testing process.

[0047] Two of the protective covers 5 are attached together, which causes the semi-circular plates 16 on both sides to be attached together, forming a tubular structure. Combined with the disc 18, the upper end of the tubular structure is shielded to further prevent debris from splashing during the detection process.

[0048] As the two protective covers 5 move closer to the center, the first pressing plate 7 first contacts the end of the plate. With the movement of the movable rod 6 and the protective cover 5, as the two protective covers 5 continue to move closer, the first pressing plate 7 compresses the spring 8, so that the first pressing plate 7 tightly abuts against the end of the plate, thereby achieving the purpose of limiting and clamping both ends of the plate.

[0049] Simultaneously, under the hinged action of the connecting rod 14 at both ends with the first extrusion plate 7 and the first piston rod 12, as the two protective covers 5 continue to move closer to the center, the first extrusion plate 7 abuts against the end of the plate, thereby squeezing the first piston rod 12 into the first sleeve 9. This causes the hydraulic oil inside the first sleeve 9 to flow into the second sleeve 10 through the connecting pipe 11, pushing the second piston rod 13 out into the protective cover 5. This, in turn, drives the second extrusion plate 15 to move closer to the plate until the second extrusion plate 15 abuts against the side of the plate, thus limiting and clamping the front and rear sides of the plate. This further ensures the stability of the plate, eliminating the need for manual clamping and fixing by staff, saving time and effort, and ensuring the efficiency of plate testing.

[0050] Then, the hydraulic push rod 23 is activated to control the impact plate 25 to impact the plate. The pressure sensor 24 detects the impact pressure, and the displacement sensor 22 monitors the sinking of the impacted part of the plate, which makes it easier to determine whether the plate meets the quality requirements and facilitates the testing of the mechanical properties of the plate.

[0051] It should be further noted that the installation structure, connection method or setting method of each component in this invention are all common mechanical methods. As long as they can achieve their beneficial effects, they can be implemented. At the same time, the displacement sensor 22, pressure sensor 24, hydraulic push rod 23 and servo motor 29 in this invention are all purchased from the market. Those skilled in the art can install and use them according to the requirements.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for testing the mechanical properties of impact-resistant sheet metal, comprising a testing table (1), characterized in that, The testing platform (1) is provided with a movable groove (2), and a support structure is provided on the upper side of the movable groove (2). A screw rod (3) is provided in the movable groove (2). Two movable blocks (4) are threaded on the screw rod (3). A protective cover (5) is fixed on the top of the movable block (4). A movable rod (6) is movably provided on the protective cover (5). A first extrusion plate (7) is fixed on the inner end of the movable rod (6). A spring (8) is connected between the first extrusion plate (7) and the protective cover (5). Hydraulic components are provided on both the front and rear sides of the protective cover (5). A fixing frame (17) is fixed on the rear surface of the testing platform (1). A disc (18) is fixed on the front top of the fixing frame (17). A testing mechanism is installed on the disc (18). A semi-circular through groove is opened on the side of the top of the two protective covers (5) that are close to each other. A semi-circular plate (16) is fixed on one side of the top of the protective cover (5) and cooperates with the through groove. The disc (18) cooperates with the upper end of the semi-circular plate (16). The hydraulic assembly includes a first sleeve (9), two first sleeves (9) are respectively disposed on the front and rear sides of the protective cover (5), a second sleeve (10) is disposed on one side of the first sleeve (9), a first piston rod (12) and a second piston rod (13) are respectively movably disposed inside the first sleeve (9) and the second sleeve (10), a connecting pipe (11) is connected between the ends of the first sleeve (9) and the second sleeve (10) away from the protective cover (5), the first sleeve (9) and the second sleeve (10) are both filled with hydraulic oil, the inner ends of the first piston rod (12) and the second piston rod (13) both extend to the inner side of the protective cover (5), and a connecting rod (14) is hinged between the first piston rod (12) and the first extrusion plate (7), and a second extrusion plate (15) is fixed to the inner end of the second piston rod (13). A mounting plate (21) is fixed at the center of the upper surface of the testing platform (1). A displacement sensor (22) is installed on the upper surface of the mounting plate (21). A camera (30) is installed on the top of the inner side of the protective cover (5). The testing mechanism includes a hydraulic push rod (23). The hydraulic push rod (23) is installed on the top of the disc (18). The telescopic end of the hydraulic push rod (23) passes through the bottom of the disc (18) and is connected to a pressure sensor (24). An impact plate (25) is provided at the bottom of the pressure sensor (24). The impact plate (25) is located directly above the displacement sensor (22). The support structure includes a U-shaped frame (26). Two U-shaped frames (26) are arranged opposite each other on the left and right sides of the mounting plate (21). The U-shaped frame (26) spans across the upper side of the movable groove (2). The bottom of the U-shaped frame (26) is fixedly connected to the testing platform (1). A support block (27) is fixed on the top of the U-shaped frame (26).

2. The impact-resistant sheet metal mechanical property testing device according to claim 1, characterized in that, The first piston rod (12) and the second piston rod (13) both have T-shaped cross sections, and both the first piston rod (12) and the second piston rod (13) slide in cooperation with the protective cover (5).

3. The impact-resistant sheet metal mechanical property testing device according to claim 2, characterized in that, The spring (8) is sleeved on the outside of the movable rod (6). The end of the movable rod (6) away from the first extrusion plate (7) extends to the outside of the protective cover (5) and is fixedly connected to the limit plate (20). A transparent plate (19) is provided on the upper side of the front surface of the protective cover (5).

4. The impact-resistant sheet metal mechanical property testing device according to claim 3, characterized in that, The movable groove (2) has two fixed support rods (28) inside. The two support rods (28) are arranged opposite to each other on both sides of the lead screw (3). The support rods (28) pass through the movable block (4). The movable block (4) and the support rods (28) are in sliding fit. The internal thread grooves of the two movable blocks (4) are in opposite directions. A servo motor (29) is installed on the right end of the detection table (1). The output end of the servo motor (29) is connected to the right end of the lead screw (3).

Images