An apparatus for testing the strength of an aluminium alloy profile

Abstract

The application relates to an aluminum alloy profile manufacturing strength test device, which comprises a workbench, n-shaped seats symmetrically arranged on the top of the workbench, two n-shaped seats used for supporting two ends of a profile body, an inverted L-shaped mounting frame arranged on the rear side of the top of the workbench, a pressing assembly installed on the inverted L-shaped mounting frame and used for pressing on the profile body to test the compression strength and the bending strength, a liftable clamping assembly arranged on the top of the n-shaped seat and used for limiting or releasing the profile body, vertical L-shaped frames symmetrically arranged between the n-shaped seats, horizontal L-shaped frames fixedly arranged between the vertical L-shaped frames and a lifting frame slidingly arranged between the two vertical L-shaped frames. Through linkage design of the clamping assembly, the extruding block and the sliding frame, synchronous control of the plug-in or separation of the sliding frame and the horizontal L-shaped frame is realized by using the electric screw rod to drive the lifting action of the clamping block, and quick and automatic switching between the compression strength test and the bending strength test is realized.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy profile manufacturing technology, and specifically to a strength testing device for aluminum alloy profile manufacturing. Background Technology

[0002] Aluminum alloy profiles, due to their lightweight, high specific strength, good corrosion resistance, and excellent machinability, have become indispensable structural materials in aerospace, rail transportation, building curtain walls, and new energy vehicles. With the rapid development of new materials technologies, especially the emergence of high-performance aluminum alloys (such as aluminum-lithium alloys and aluminum-magnesium-scandium alloys) and aluminum-based composite materials, higher requirements are being placed on the mechanical property evaluation of profiles. Compressive strength and flexural strength are two core indicators for measuring the structural safety and service reliability of aluminum alloy profiles, directly affecting their service life and safety margin under load-bearing conditions.

[0003] Currently, most existing aluminum alloy profile strength testing devices are single-function devices, capable of independently completing either compressive strength testing or bending strength testing. If both performance parameters need to be obtained simultaneously, testing must be performed on different devices, resulting in low testing efficiency, cumbersome operation, and increased equipment maintenance and costs.

[0004] Therefore, there is an urgent need to design an aluminum alloy profile manufacturing strength testing device that can perform compressive strength and bending strength tests on aluminum alloy profiles and can flexibly switch between the two tests, so as to overcome the above-mentioned defects. Summary of the Invention

[0005] The technical solution is as follows: A strength testing device for aluminum alloy profile manufacturing includes a worktable, with two n-shaped seats symmetrically arranged on the top of the worktable to provide support for both ends of the profile body. An inverted L-shaped mounting frame is arranged on the rear side of the top of the worktable, and a pressing component is installed on the inverted L-shaped mounting frame. The pressing component applies pressure to the profile body to perform compressive strength and bending strength tests. A liftable clamping component is arranged on the top of the n-shaped seats to limit or release the profile body. Vertical brackets are symmetrically arranged between the n-shaped seats, and a horizontal bracket is fixedly arranged between the vertical brackets. A lifting frame is slidably arranged between the two vertical brackets. Support rollers are evenly rotated on the front side of the lifting frame to provide support for the middle of the profile body. A horizontal frame is installed on the side of the lifting frame opposite to the support rollers. The horizontal frame is arranged behind the vertical brackets. A sliding frame is slidably arranged inside the horizontal frame. When the sliding frame passes horizontally through the horizontal frame and inserts into the horizontal bracket, the lifting frame is locked.

[0006] Furthermore, each vertical frame is equipped with a longitudinal guide rod, which slides through the lifting frame. A first spring is sleeved on the longitudinal guide rod, and the two ends of the first spring are respectively connected to the bottom inner wall of the vertical frame and the lifting frame.

[0007] Furthermore, parallel transverse guide rods are provided on both sides of the sliding frame, and a second spring is sleeved on the transverse guide rod. The transverse guide rod can slide through the horizontal frame and the vertical frame.

[0008] Furthermore, the clamping assembly includes a gantry frame, an electric lead screw, and a clamping block. The gantry frame is mounted on the top of the n-shaped seat, the clamping block is slidably mounted on the gantry frame, and the electric lead screw is mounted on the n-shaped seat. The lead screw thread passes through the clamping block and its two ends are rotatably connected to the n-shaped seat and the gantry frame, respectively.

[0009] Furthermore, the top of the workbench is symmetrically provided with uprights on the left and right sides. The uprights are located on the rear side of the n-shaped seat. An extrusion block is slidably provided on the top of the upright. An inclined surface is provided at one end of the two extrusion blocks that are close to each other, and the inclined surface contacts and cooperates with the rear side of the sliding frame. A connecting frame is provided between the extrusion block and the clamping block, and the connecting frame is rotatably connected to both of them.

[0010] Furthermore, the pressing assembly includes a hydraulic cylinder mounted on an inverted L-shaped mounting bracket, a mounting block mounted on the free end of the piston rod of the hydraulic cylinder, U-shaped slides symmetrically mounted on both sides of the mounting block, and a pressing block that is slidably connected to both U-shaped slides.

[0011] Furthermore, it also includes a pressure sensor and a human-machine interface. The pressure sensor is located between the mounting block and the lowering block, with the pressure sensor mounted at the bottom of the mounting block. The human-machine interface is mounted on the top of the worktable and is electrically connected to the pressure sensor.

[0012] Furthermore, a first limiting groove is provided on the cross frame, and a second limiting groove is provided on the sliding frame. An inverted L-shaped limiting block is provided on the rear side of the mounting block, and the L-shaped limiting block can pass through the first limiting groove and the second limiting groove.

[0013] Furthermore, guide rollers are evenly spaced on the back of the sliding frame, and the guide rollers roll in cooperation with the inclined surface of the extrusion block.

[0014] Furthermore, the top height of the support roller is initially aligned with the top support surface of the n-shaped seat.

[0015] The beneficial effects of the present invention are as follows: 1. By linking the clamping assembly with the extrusion block and the sliding frame, the electric screw drives the clamping block to lift and lower, and synchronously controls the insertion or disengagement of the sliding frame and the transverse frame, so as to realize the rapid and automatic switching between the two modes of compressive strength test and bending strength test, which significantly improves the test efficiency.

[0016] 2. In the compressive strength test mode, the sliding frame automatically inserts into the transverse frame, reliably locking the lifting frame and support rollers, providing stable support for the middle of the profile body, ensuring that the load applied by the pressing component is evenly transmitted to all parts of the profile, thereby ensuring the accuracy of the test data.

[0017] 3. In the bending strength test mode, the sliding frame automatically exits the transverse frame and releases the lock on the lifting frame. At the same time, through the cooperative design of the inverted L-shaped limit block with the first limit through groove and the second limit through groove, when the pressure block applies a load to bend the profile, the lifting frame, support roller, cross frame and sliding frame can move down synchronously with the bending deformation of the profile, avoiding the interference of additional constraint force on the bending deformation curve and truly reflecting the bending performance of the profile. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a partial three-dimensional structural diagram of the hydraulic cylinder, U-shaped slide, lower pressure block, pressure sensor, inverted L-shaped limit block, and other components of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the stand, extrusion block, n-shaped seat, gantry frame, electric lead screw, clamping block and connecting frame of the present invention.

[0021] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention.

[0022] Figure 5 For the present invention Figure 4 A partial three-dimensional structural diagram.

[0023] Figure 6 This is a three-dimensional structural diagram of the components of the present invention, including the vertical frame, lifting frame, support roller, horizontal frame, and sliding frame.

[0024] Figure 7 For the present invention Figure 6 Partial exploded view.

[0025] Reference numerals: 1. Workbench; 100. Profile body; 2. Inverted L-shaped mounting bracket; 3. Hydraulic cylinder; 4. Mounting block; 5. U-shaped slide; 6. Pressing block; 7. Pressure sensor; 8. Human-machine interface; 10. Inverted L-shaped limiting block; 11. Vertical frame; 12. Extrusion block; 13. N-shaped seat; 15. Gantry frame; 16. Electric lead screw; 17. Clamping block; 18. Connecting frame; 19. Sponge pad; 20. Vertical I-beam frame; 200. Horizontal I-beam frame; 21. Longitudinal guide rod; 22. First spring; 23. Lifting frame; 24. Support roller; 25. Horizontal frame; 251. First limiting through groove; 26. Sliding frame; 261. Second limiting through groove; 27. Horizontal guide rod; 28. Second spring; 29. ​​Guide roller. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Example: A strength testing device for aluminum alloy profile manufacturing, such as Figures 1-7 As shown, the device includes a workbench 1, a profile body 100, and n-shaped seats 13. The workbench 1 has two n-shaped seats 13 symmetrically arranged on its top, providing support for both ends of the profile body 100. An inverted L-shaped mounting bracket 2 is located on the rear side of the top of the workbench 1, positioned between the two n-shaped seats 13. A pressing component is mounted on the inverted L-shaped mounting bracket 2, applying pressure to the profile body 100 for compressive and bending strength testing. A liftable clamping component is located on the top of each n-shaped seat 13 to limit or release the profile body 100. Vertical U-shaped supports 20 are symmetrically arranged between the n-shaped seats 13, and a horizontal U-shaped support 200 is fixedly arranged between the vertical U-shaped supports 20. A sliding mechanism is provided between the two vertical U-shaped supports 20. A lifting frame 23 is provided, and support rollers 24 are evenly spaced and rotated on the front side of the lifting frame 23. The support rollers 24 are used to support the middle part of the profile body 100. After the profile body 100 completes the strength test, when the profile body 100 is pushed to one side, the support rollers 24 help to reduce friction. The top height of the support rollers 24 is on the same horizontal line as the top support surface of the n-shaped seat 13 in the initial state. A horizontal frame 25 is installed on the side of the lifting frame 23 away from the support rollers 24. The horizontal frame 25 is located on the rear side of the vertical bracket 20. A sliding frame 26 is slidably arranged in the horizontal frame 25. When the sliding frame 26 passes horizontally through the horizontal frame 25 and inserts into the horizontal bracket 200, the lifting frame 23 is fixed and locked on the bracket 200, so that it cannot move up and down.

[0028] like Figure 7As shown, each vertical frame 20 is provided with a longitudinal guide rod 21. The longitudinal guide rod 21 slides through the lifting frame 23. A first spring 22 is sleeved on the longitudinal guide rod 21. The two ends of the first spring 22 are connected to the bottom inner wall of the vertical frame 20 and the lifting frame 23, respectively. The first spring 22 is used to drive the lifting frame 23 to return to its original position. When the first spring 22 is in its natural state, the lifting frame 23 is located on the upper inner side of the vertical frame 20.

[0029] like Figure 7 As shown, the sliding frame 26 has parallel transverse guide rods 27 on both sides. A second spring 28 is sleeved on the transverse guide rod 27. The two ends of the second spring 28 are connected to the sliding frame 26 and the cross frame 25 respectively. The second spring 28 is used to drive the sliding frame 26 to move in the direction of the cross frame 25. The transverse guide rod 27 can slide through the cross frame 25 and the vertical frame 20. It is worth noting that the cross frame 25 has a first limiting groove 251 that runs vertically through it, and the sliding frame 26 has a second limiting groove 261 that runs vertically through it. An inverted L-shaped limiting block 10 is provided on the rear side of the mounting block 4. The L-shaped limiting block can pass through the first limiting groove 251 and the second limiting groove 261. When the sliding frame 26 passes horizontally through the cross frame 25 and is inserted into the transverse U-shaped frame 200, the second limiting groove 261 is aligned with the first limiting groove 251. At this time, the second spring 28 is compressed and deformed. When the L-shaped limiting block moves down, it can pass through the first limiting groove 251 and the second limiting groove 261 at the same time. When the second spring 28 is reset, the first limiting groove 251 and the second limiting groove 261 are misaligned. Under the driving action of the hydraulic cylinder 3 extending downward, the L-shaped limiting block drives the lifting frame 23, the support roller 24, the cross frame 25 and the sliding frame 26 to move down synchronously along the longitudinal guide rod 21.

[0030] like Figure 3 As shown, the clamping assembly includes a gantry frame 15, an electric lead screw 16, and a clamping block 17. The gantry frame 15 is mounted on the top of the n-shaped seat 13, and the clamping block 17 is slidably mounted on the gantry frame 15. The electric lead screw 16 is mounted on the n-shaped seat 13. The electric lead screw 16 includes a lead screw rotatably mounted inside the gantry frame 15 and a motor mounted inside the n-shaped seat 13. The output shaft of the motor passes through the n-shaped seat 13 and is connected to the lower end of the lead screw via a coupling. The lead screw thread in the electric lead screw 16 passes through the clamping block 17, and its two ends are rotatably connected to the n-shaped seat 13 and the gantry frame 15, respectively. The electric lead screw 16 drives the clamping block 17 to move downward and cooperate with the n-shaped seat 13 to form a clamping and fixing of the end of the profile body 100. To avoid rigid contact between the clamping block 17 and the n-shaped seat 13 and the surface of the profile body 100, sponge pads 19 are provided at the top of the n-shaped seat 13 and the bottom of the clamping block 17.

[0031] like Figure 4 and Figure 5As shown, the top of the workbench 1 is symmetrically provided with uprights 11. The uprights 11 are located on the rear side of the n-shaped seat 13. The top of the uprights 11 is slidably provided with extrusion blocks 12. The ends of the two extrusion blocks 12 that are close to each other are provided with inclined surfaces, and the inclined surfaces are in contact with the rear side of the sliding frame 26. A connecting frame 18 is provided between the extrusion blocks 12 and the clamping blocks 17. The connecting frame 18 is rotatably connected to both of them. When the electric screw 16 drives the clamping block 17 to move up and down, the clamping block 17 drives the pressing block 12 to slide horizontally through the connecting frame 18. When the electric screw 16 drives the clamping block 17 to descend, the pressing blocks 12 on both sides approach each other, and the inclined surface of the pressing block 12 presses against the sliding frame 26, thereby driving the sliding frame 26 to overcome the elastic force of the second spring 28, move forward through the cross frame 25 and insert into the transverse bracket 200, thereby locking the lifting frame 23. When the electric screw 16 drives the clamping block 17 to rise, the pressing blocks 12 on both sides move away from each other, and the second spring 28 drives the sliding frame 26 to move backward away from the transverse bracket 200, thereby releasing the lock on the lifting frame 23.

[0032] Guide rollers 29 are evenly spaced on the back of the sliding frame 26. The guide rollers 29 roll in cooperation with the inclined surface of the extrusion block 12 to reduce the friction between the extrusion block 12 and the sliding frame 26.

[0033] like Figure 2 As shown, the pressing assembly includes a hydraulic cylinder 3 mounted on an inverted L-shaped mounting bracket 2, a mounting block 4 mounted on the free end of the piston rod of the hydraulic cylinder 3, U-shaped slides 5 symmetrically mounted on both sides of the mounting block 4, and a pressing block 6 slidably connected to both U-shaped slides 5.

[0034] like Figure 2 As shown, it also includes a pressure sensor 7 and a human-machine interface 8. The pressure sensor 7 is located between the mounting block 4 and the pressing block 6. The pressure sensor 7 is installed at the bottom of the mounting block 4 and is used to monitor the magnitude of the pressing force of the pressing block 6 in real time. The human-machine interface 8 is installed on the top of the workbench 1 and is electrically connected to the pressure sensor 7.

[0035] When a compressive strength test is required on the profile body 100, the two ends of the profile body 100 to be tested are placed on the left and right n-shaped seats 13 respectively. Then, the screw in the electric screw 16 rotates in the forward direction, thereby driving the clamping block 17 to descend vertically along the gantry frame 15, and clamping the two ends of the profile body 100 in cooperation with the n-shaped seats 13. At the same time as the clamping block 17 descends, the extrusion blocks 12 on both sides are driven to move closer to each other through the connecting frame 18. When the extrusion blocks 12 on both sides move closer to each other, the inclined surface of the extrusion block 12 contacts the sliding frame 26 and pushes the sliding frame 26 to move forward against the elastic force of the second spring 28, thereby passing horizontally through the cross frame 25 and inserting into the transverse U-shaped frame 200. At this time, the lifting frame 23 and the cross frame 25 are limited and fixed by the sliding frame 26 inserted into the transverse U-shaped frame 200 and cannot be lifted or lowered. The support roller 24 provides stable support for the middle part of the profile body 100. At the same time, the sliding frame 26 The second limiting groove 261 is aligned with the first limiting groove 251 on the crossbeam 25. Then, the hydraulic cylinder 3 is activated, thereby driving the mounting block 4, pressure sensor 7, U-shaped slide 5 and lowering block 6 to descend together. The lowering block 6 first contacts the top of the profile body 100, and moves upward along the U-shaped slide 5 under the blocking action of the profile body 100 until it comes into contact with the pressure sensor 7. The hydraulic cylinder 3 continues to press down, and the pressure sensor 7 detects the applied pressure value in real time and transmits the signal to the human-machine interface 8 for display and recording, thereby conducting a compressive strength test on the profile body 100.

[0036] When switching to the bending strength test, the lead screw in the electric lead screw 16 rotates in the opposite direction, thereby driving the clamping block 17 to move vertically upward along the gantry frame 15, releasing the clamping limit on both ends of the profile body 100; as the clamping block 17 moves upward, it drives the pressing blocks 12 on both sides to move away from each other through the connecting frame 18, thereby releasing the pressing and pushing of the pressing blocks 12 on the sliding frame 26. The sliding frame 26 retracts and resets under the elastic force of the second spring 28, thereby exiting from the transverse frame 200, and the first limiting through groove 251 and the second limiting through groove 261 are in a misaligned state, thereby releasing the limiting lock on the lifting frame 23 and the cross frame 25; then, the hydraulic cylinder is started again. 3. This drives the mounting block 4, pressure sensor 7, U-shaped slide 5, and lowering block 6 to descend together; the hydraulic cylinder 3 applies a downward force to the middle of the profile body 100 through the lowering block 6. As the downward pressure increases, the middle of the profile bends downward and pushes the support roller 24 and the lifting frame 23 to move downward; at the same time, due to the misalignment of the first limiting groove 251 and the second limiting groove 261, the inverted L-shaped limiting block 10 passes downward through the first limiting groove 251 and connects with the sliding frame 26. Therefore, while the hydraulic cylinder 3 continues to apply downward pressure to the lowering block 6 through the piston rod, the inverted L-shaped limiting block 10 synchronously drives the cross frame 25 and the sliding frame 26 to move downward synchronously with the lifting frame 23. As the downward stroke increases, the bending degree of the profile body 100 gradually increases until it reaches the preset bending limit or breaks, thus completing the bending strength test. After the test is completed, the hydraulic cylinder 3 retracts and resets, and the lifting frame 23 drives the support roller 24 to rise back to the initial height under the action of the first spring 22, waiting for the next test.

[0037] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. A strength testing device for aluminum alloy profile manufacturing, characterized in that, The system includes a workbench (1), on which n-shaped seats (13) are symmetrically arranged on the top left and right sides. The two n-shaped seats (13) are used to provide support for both ends of the profile body (100). An inverted L-shaped mounting bracket (2) is provided on the rear side of the top of the workbench (1). A pressing component is installed on the inverted L-shaped mounting bracket (2). The pressing component applies pressure to the profile body (100) to conduct compressive strength and bending strength tests. A lifting clamping component is provided on the top of the n-shaped seats (13) to limit or release the profile body (100). Vertical brackets (20) are symmetrically arranged between the n-shaped seats (13). A horizontal frame (200) is fixedly installed between the two vertical frames (20), and a lifting frame (23) is slidably installed between the two vertical frames (20). A support roller (24) is evenly rotated on the front side of the lifting frame (23). The support roller (24) is used to provide support for the middle part of the profile body (100). A horizontal frame (25) is installed on the side of the lifting frame (23) facing away from the support roller (24). The horizontal frame (25) is located on the rear side of the vertical frames (20). A sliding frame (26) is slidably installed inside the horizontal frame (25). When the sliding frame (26) passes horizontally through the horizontal frame (25) and is inserted into the horizontal frame (200), the lifting frame (23) is locked.

2. The aluminum alloy profile manufacturing strength testing device according to claim 1, characterized in that, Each vertical frame (20) is provided with a longitudinal guide rod (21), which slides through the lifting frame (23). A first spring (22) is sleeved on the longitudinal guide rod (21), and the two ends of the first spring (22) are connected to the bottom inner wall of the vertical frame (20) and the lifting frame (23) respectively.

3. The aluminum alloy profile manufacturing strength testing device according to claim 1, characterized in that, The sliding frame (26) is provided with horizontal guide rods (27) parallel to it on both sides. A second spring (28) is sleeved on the horizontal guide rod (27). The horizontal guide rod (27) can slide through the horizontal frame (25) and the vertical frame (20).

4. The aluminum alloy profile manufacturing strength testing device according to claim 1, characterized in that, The clamping assembly includes a gantry (15), an electric lead screw (16), and a clamping block (17). The gantry (15) is mounted on the top of the n-shaped seat (13). The clamping block (17) is slidably mounted on the gantry (15). The electric lead screw (16) is mounted on the n-shaped seat (13). The lead screw thread of the electric lead screw (16) passes through the clamping block (17) and its two ends are rotatably connected to the n-shaped seat (13) and the gantry (15) respectively.

5. The strength testing device for aluminum alloy profile manufacturing according to claim 1, characterized in that, The workbench (1) is symmetrically provided with uprights (11) on the top left and right. The uprights (11) are located on the rear side of the n-shaped seat (13). The top of the uprights (11) is slidably provided with extrusion blocks (12). The ends of the two extrusion blocks (12) that are close to each other are provided with inclined surfaces, and the inclined surfaces are in contact with the rear side of the sliding frame (26). A connecting frame (18) is provided between the extrusion blocks (12) and the clamping blocks (17). The connecting frame (18) is rotatably connected to both of them.

6. The strength testing device for aluminum alloy profile manufacturing according to claim 1, characterized in that, The pressing assembly includes a hydraulic cylinder (3) mounted on an inverted L-shaped mounting bracket (2), a mounting block (4) mounted on the free end of the piston rod of the hydraulic cylinder (3), U-shaped slides (5) symmetrically mounted on both sides of the mounting block (4), and a pressing block (6) slidably connected to both U-shaped slides (5).

7. The aluminum alloy profile manufacturing strength testing device according to any one of claims 1-6, characterized in that, It also includes a pressure sensor (7) and a human-machine interface (8). The pressure sensor (7) is located between the mounting block (4) and the pressure block (6). The pressure sensor (7) is installed at the bottom of the mounting block (4). The human-machine interface (8) is installed on the top of the workbench (1). The human-machine interface (8) is electrically connected to the pressure sensor (7).

8. The aluminum alloy profile manufacturing strength testing device according to claim 6, characterized in that, The cross frame (25) has a first limiting groove (251) that runs vertically through it, and the sliding frame (26) has a second limiting groove (261) that runs vertically through it. The mounting block (4) has an inverted L-shaped limiting block (10) on its rear side. The L-shaped limiting block can pass through the first limiting groove (251) and the second limiting groove (261).

9. The strength testing device for aluminum alloy profile manufacturing according to claim 5, characterized in that, Guide rollers (29) are evenly spaced on the back of the sliding frame (26), and the guide rollers (29) roll in cooperation with the inclined surface of the extrusion block (12).

10. The aluminum alloy profile manufacturing strength testing device according to claim 1, characterized in that, The top height of the support roller (24) is on the same horizontal line as the top support surface of the n-shaped seat (13) in the initial state.

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