A dynamic crack resistance testing machine

Abstract

The utility model discloses a dynamic anti -cracking testing machine, include: test box, the test box is directly placed on the ground, the upper portion of test box is provided with the automation limit fixed establishment, wherein automation limit fixed establishment includes limit post, fixed plate, connecting block, fixed stand, connecting stand, support stand, rotary rod, limit rod, swivel rod and motor, the upper portion of test box is provided with fixed plate, and the below of fixed plate is installed with limit post, and the upper portion of fixed plate equidistance fixed mounting has connecting block. The dynamic anti -cracking testing machine, through set up the automation limit fixed establishment, reduced the output of manpower, make the fixed limit more stable, set up the convenient material taking mechanism simultaneously, utilize electric telescopic link to push out the sample of testing, convenient for taking out, save the time of taking material, in addition set up the high -efficient top pressure mechanism, only set up a motor as power, carry out the top pressure test to multiple samples, save the cost input.

Description

Technical Field

[0001] This utility model relates to the field of crack resistance testing technology, specifically a dynamic crack resistance testing machine. Background Technology

[0002] A dynamic crack resistance testing machine is a device used to test a material's ability to resist crack propagation. It evaluates the crack resistance of a material by simulating the generation and propagation process of cracks. Through this test, the performance degradation of a material under specific environmental conditions can be predicted, providing a basis for the maintenance and replacement of the material. Currently, there are various dynamic crack resistance testing machines available on the market, but some shortcomings still exist.

[0003] Existing dynamic crack resistance testing machines improve testing efficiency by testing multiple sample materials simultaneously. However, they require manual fixing of the test samples during testing, which is labor-intensive. Furthermore, the use of multiple motors to press the samples is costly. Removing the tested samples is also cumbersome and time-consuming. In contrast, patent CN111426551B discloses a dynamic crack resistance testing machine. This machine includes a housing with several grooves for accommodating samples. A crack-pressing component for compressing the samples is located below the grooves within the housing. A positioning component for fixing the samples is also included. During testing, multiple samples are placed in the grooves, fixed by the positioning component, and then pressed down by the crack-pressing component until the samples crack. This allows for simultaneous testing of multiple samples, saving testing time and improving efficiency. However, while this device can improve testing efficiency by testing multiple sample materials together, it requires manual positioning and fixing of the test samples during the testing process, which is labor-intensive. In addition, it requires multiple motors to press the samples, resulting in a large investment in motors. Furthermore, removing the tested samples is troublesome and time-consuming. Therefore, we propose a dynamic crack resistance testing machine to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a dynamic crack resistance testing machine to solve the problems mentioned in the background art. The current dynamic crack resistance testing machine improves the testing efficiency by setting multiple sample materials for testing together. However, during the testing process, it is necessary to manually limit and fix the test sample, which consumes a lot of manpower. At the same time, multiple motors are set to press the sample, which requires a large investment in motors. In addition, it is troublesome and time-consuming to remove the tested sample.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dynamic crack resistance testing machine, comprising:

[0006] The test chamber is placed directly on the ground;

[0007] Also includes:

[0008] An automated limiting and fixing mechanism is provided above the test chamber. The automated limiting and fixing mechanism includes a limiting post, a fixing plate, a connecting block, a fixing frame, a connecting frame, a support frame, a rotating rod, a limiting rod, a rotating rod, and a motor. A fixing plate is provided above the test chamber, and a limiting post is installed below the fixing plate. Connecting blocks are fixedly installed at equal intervals above the fixing plate, and the connecting blocks are slidably installed on the outside of the fixing frame.

[0009] The placement plate has a high-efficiency pressing mechanism below it. The high-efficiency pressing mechanism includes an extrusion block, a bracket, a push rod, a slide rail, a toggle rod, and a stabilizing frame. The extrusion blocks are symmetrically arranged on the left and right sides below the placement plate, and a bracket is installed below the extrusion block. A push rod is fixedly connected to the lower middle part of the bracket, and a slide rail is installed inside the push rod.

[0010] Preferably, a placement plate is slidably installed inside the test chamber, and placement slots are symmetrically opened on the inner side of the placement plate. The sample is placed inside the placement slot, and a limiting post is tightly attached to the top of the sample.

[0011] Preferably, the left and right sides of the placement plate are fixedly connected to connecting columns, and mounting blocks are installed on the outer side of the connecting columns, and a locking block is engaged with the lower part of the mounting block.

[0012] Preferably, the mounting block and the engaging block are fixedly connected by a threaded rod, and an electric telescopic rod is fixedly connected to the lower part of the engaging block.

[0013] Preferably, a connecting frame is installed on the rear side of the connecting block, and the middle rear side of the connecting frame is slidably installed inside the support frame, and the support frame is fixedly connected to the test chamber.

[0014] Preferably, a rotating rod is connected to the rear side of the middle part of the connecting frame, and a sliding groove is provided inside the rotating rod. A rotating rod is slidably connected inside the sliding groove, and a motor is connected to the rear side of the rotating rod.

[0015] Preferably, a limiting rod is rotatably connected to the left rear of the rotating rod, and the limiting rod is fixedly connected to the test chamber.

[0016] Preferably, a lever is slidably connected inside the slide frame, and a motor is connected to the rear side of the lever. A stabilizing frame is fixedly connected to the right side of the motor, and a test chamber is connected to the right side of the stabilizing frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the dynamic crack resistance testing machine reduces the output of manpower by setting an automated limit and fixation mechanism, making the fixation and limit more stable. At the same time, it is equipped with a material picking mechanism, which uses an electric telescopic rod to push out the tested sample, making it easy to pick up and saving material picking time. In addition, it is equipped with a high-efficiency top pressure mechanism, which only uses one motor as power to perform top pressure tests on multiple samples, saving cost investment.

[0018] 1. It is equipped with a test chamber, a placement plate, a placement slot, and samples. By setting up a placement plate inside the test chamber, and symmetrically opening placement slots on the upper inner side of the placement plate, samples can be placed inside the placement slots, allowing multiple samples to be tested simultaneously, which greatly improves the efficiency of the test.

[0019] 2. A limiting post, a fixing plate, a connecting block, and a fixing frame are provided. A limiting post is set above the sample and fixedly installed below the fixing plate. A connecting block is fixedly connected above the fixing plate and is located on the outside of the fixing frame. A connecting frame is installed on the rear side of the connecting block, connecting the three connecting blocks. The rear middle section of the connecting frame is located inside the support frame, which is fixedly connected to the test chamber. A rotating rod is connected to the rear middle section of the connecting frame. A sliding groove is formed inside the rotating rod, and the front side of the rotating rod is located at the... Inside the sliding groove, a limiting rod is rotatably connected to the left rear of the rotating rod for limiting. That is, when the motor connected to the rear of the rotating rod is turned on, the rotating rod will rotate. When the rotating rod rotates, the front side of the rotating rod will slide in the sliding groove of the rotating rod, causing the rotating rod to rotate. When the rotating rod rotates, it will push the connecting frame to move up and down inside the support frame. That is, the connecting frame will drive the connecting block to slide on the outside of the fixed frame, which will cause the fixed plate and the limiting post to move down, so that the limiting post is tightly attached to the sample and the sample is fixed and limited.

[0020] 3. It is equipped with connecting columns, mounting blocks, locking blocks and threaded rods. The connecting columns are symmetrically fixed to the left and right sides of the placement plate. The mounting blocks are set on the outside of the connecting columns. The bottom of the mounting blocks is locked to the locking blocks. At the same time, the mounting blocks and locking blocks are fixedly connected by threaded rods. That is, only by unscrewing the fixed threaded rods and pulling them out of the interior of the mounting blocks and locking blocks, the mounting blocks and locking blocks will separate, and the placement plate can be removed from the interior of the test chamber.

[0021] 4. An electric telescopic rod is installed below the locking block. When the electric telescopic rod is opened, its output end can push the locking block and the parts connected to it upwards, which can push the placement plate to the top of the test chamber, making it easy to remove the placement plate.

[0022] 5. The device is equipped with a support, a push rod, a slide rail, and a lever. A pressing block is installed below the placement plate, aligned with a groove inside the placement plate. The support is connected below the pressing block, and the push rod is fixedly connected to the lower middle part of the support. A stabilizing frame is installed outside the push rod to support it. A slide rail is installed inside the push rod, and a lever is installed inside the slide rail. When the motor connected to the rear of the lever is turned on, the lever rotates, allowing the front of the lever to slide inside the slide rail. This allows the push rod to move up and down inside the stabilizing frame, thus pushing the support and the pressing block upwards. The pressing block can then press against the sample placed inside the placement plate. Attached Figure Description

[0023] Figure 1 This is a perspective structural diagram of the present invention;

[0024] Figure 2 This is a perspective view of the connection structure of the limiting rod, rotating rod, and motor of this utility model;

[0025] Figure 3 This is a perspective view of the connection structure of the extrusion block, bracket, and push rod of this utility model;

[0026] Figure 4 This is a perspective view of the connection structure of the limiting post, fixing plate and connecting block of this utility model;

[0027] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0028] Figure 6 This is a perspective view of the connection structure of the push rod, slide rail, and actuating rod of this utility model.

[0029] In the diagram: 1. Test chamber; 2. Placement plate; 3. Placement slot; 4. Sample; 5. Limiting post; 6. Fixing plate; 7. Connecting block; 8. Fixing frame; 9. Connecting frame; 10. Support frame; 11. Rotating rod; 12. Limiting rod; 13. Rotating rod; 14. Motor; 15. Connecting post; 16. Mounting block; 17. Engaging block; 18. Threaded rod; 19. Electric telescopic rod; 20. Extrusion block; 21. Bracket; 22. Push rod; 23. Slide frame; 24. Actuating rod; 25. Stabilizing frame. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-6 This utility model provides a technical solution:

[0032] Example 1: To address the problems existing in the prior art, this example provides the following technical solution: a dynamic crack resistance testing machine, comprising a test chamber 1; an automated limiting and fixing mechanism, located above the test chamber 1, capable of automatically moving up and down to fix and limit the sample 4 placed inside the placement slot 3, thereby improving the accuracy of the test; a material removal mechanism, located on the left and right sides outside the placement plate 2, capable of pushing the placement plate 2 upwards and moving it out of the test chamber 1, and then quickly disassembling the placement plate 2 for easy removal; and a high-efficiency top-pressing mechanism, located below the placement plate 2, powered by a motor 14, capable of testing multiple samples 4, reducing cost input.First, place sample 4 inside the placement slot 3 opened in the placement plate 2. Then, turn on the motor 14 connected to the rear of the rotating rod 13. The motor 14 will cause the rotating rod 13 to rotate. When the rotating rod 13 rotates, its front side will slide inside the sliding groove set inside the rotating rod 11, which will cause the rotating rod 11 to rotate. The left side of the rotating rod 11 is rotatably connected to the limiting rod 12, which limits its movement. The right side of the rotating rod 11 is connected to the connecting frame 9, which is located inside the support frame 10, allowing the connecting frame 9 to slide up and down inside the support frame 10. At the same time, the front side of the connecting frame 9 is connected to the connecting block 7. 7 is located on the outside of the fixing frame 8, and the fixing plate 6 is fixedly connected to the bottom of the connecting block 7. That is, the connecting frame 9 will allow the connecting block 7 to slide on the outside of the fixing frame 8. In addition, the sliding of the connecting block 7 will drive the fixing plate 6 to move together. Furthermore, a limiting post 5 is installed below the fixing plate 6. When the fixing plate 6 moves downward, the limiting post 5 will also move downward, which can fix and limit the sample 4 to be tested. After the sample 4 is fixed, the motor 14 connected to the rear of the actuating lever 24 is turned on. The motor 14 will cause the actuating lever 24 to rotate. When the actuating lever 24 rotates, the front side of the actuating lever 24 will slide inside the slide frame 23. The slide rail 23 is located inside the push rod 22, and a stabilizing frame 25 is installed on the outside of the push rod 22 for support. A bracket 21 is fixedly connected above the push rod 22, and a pressing block 20 is installed above the bracket 21. When the actuating rod 24 slides inside the slide rail 23, it causes the push rod 22 to move up and down. When the push rod 22 moves upward, it pushes the pressing block 20 and the bracket 21 upward to press against the sample 4, allowing for a crack resistance test on the sample 4. After the test on the sample 4 is completed, the limiting post 5 disengages from the sample 4 and moves upward. Then, the electric telescopic rod 19 is opened, and the electric telescopic rod... The output end of the retracting rod 19 can push the locking block 17 upward. Since the mounting block 16 is fixedly installed above the locking block 17 by the threaded rod 18, and the mounting block 16 is located outside the connecting column 15, while the connecting column 15 is installed on the left and right sides of the outside of the placement plate 2, the placement plate 2 can be pushed to the top of the test chamber 1. Then, unscrew the threaded rod 18 that fixes the mounting block 16 and the locking block 17, and pull it out of the interior of the mounting block 16 and the locking block 17. This separates the mounting block 16 and the locking block 17. Pulling the connecting column 15 allows the placement plate 2 to be removed from the interior of the test chamber 1, enabling the cleaning of the sample 4 inside the placement plate 2.

[0033] Existing testing machines can test multiple samples (4 materials) simultaneously to improve testing efficiency. However, during the testing process, manual positioning and fixing of the test samples (4) is required, which is labor-intensive. Therefore, this embodiment adopts the following technical solution, such as... Figure 1 , Figure 2 and Figure 4As shown, the automated limiting and fixing mechanism includes a limiting post 5 positioned above the sample 4. The limiting post 5 is fixedly installed below the fixing plate 6, and a connecting block 7 is fixedly connected above the fixing plate 6. The connecting block 7 is located on the outside of the fixing frame 8, and a connecting frame 9 is installed on the rear side of the connecting block 7, connecting the three connecting blocks 7. Furthermore, the rear middle part of the connecting frame 9 is located inside the support frame 10, which is fixedly connected to the test chamber 1. A rotating rod 11 is connected to the rear middle part of the connecting frame 9. A sliding groove is formed inside the rotating rod 11, and the front side of the rotating rod 13 is located within the sliding groove of the rotating rod 11. Inside, the left rear of the rotating rod 11 is rotatably connected to the limiting rod 12 for limiting. That is, when the motor 14 connected to the rear of the rotating rod 13 is opened, the rotating rod 13 can rotate. When the rotating rod 13 rotates, the front side of the rotating rod 13 will slide in the sliding groove of the rotating rod 11, which will cause the rotating rod 11 to rotate. When the rotating rod 11 rotates, it will push the connecting frame 9 to move up and down inside the support frame 10. That is, the connecting frame 9 will drive the connecting block 7 to slide on the outside of the fixed frame 8, which will cause the fixed plate 6 and the limiting post 5 to move down, so that the limiting post 5 and the sample 4 are tightly fitted, and the sample 4 is fixed and limited.

[0034] Example 2: Existing testing machines use multiple motors 14 to press against the sample 4, resulting in a large number of motors 14 being used. Therefore, this example uses the following technical solution, such as... Figure 3 , Figure 4 and Figure 6 As shown, the high-efficiency pressing mechanism includes a pressing block 20 disposed below the placement plate 2. The pressing block 20 is aligned with a groove opened inside the placement plate 2. A support 21 is connected to the lower part of the pressing block 20. A push rod 22 is fixedly connected to the lower middle part of the support 21. A stabilizing frame 25 is disposed on the outer side of the push rod 22 to support the push rod 22. At the same time, a sliding frame 23 is disposed inside the push rod 22. A toggle rod 24 is disposed inside the sliding frame 23. When the motor 14 connected to the rear side of the toggle rod 24 is turned on, the toggle rod 24 can rotate. That is, the front side of the toggle rod 24 can slide inside the sliding frame 23, so that the push rod 22 can move up and down inside the stabilizing frame 25. Thus, the push rod 22 can push the support 21 and the pressing block 20 to move upward. The pressing block 20 can press the sample 4 placed inside the placement plate 2.

[0035] Example 3: Existing testing machines are cumbersome and time-consuming to remove the tested sample 4. Therefore, this example uses the following technical solution, such as... Figure 1 , Figure 4 and Figure 5As shown, the material handling mechanism includes an electric telescopic rod 19 located on the left and right sides of the outside of the test chamber 1. When the electric telescopic rod 19 is opened, its output end can push the locking block 17 upward. Since the mounting block 16 is fixedly installed on the top of the locking block 17 by the threaded rod 18, and the mounting block 16 is located on the outside of the connecting column 15, while the connecting column 15 is installed on the left and right sides of the outside of the placement plate 2, the placement plate 2 can be pushed to the top of the test chamber 1. Then, the threaded rod 18 that fixes the mounting block 16 and the locking block 17 is unscrewed, and the mounting block 16 and the locking block 17 are pulled out of the interior of the mounting block 16 and the locking block 17. That is, the mounting block 16 and the locking block 17 will separate. Pulling the connecting column 15 can remove the placement plate 2 from the interior of the test chamber 1.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic crack resistance testing machine, comprising: Test chamber (1), which is placed directly on the ground; Its characteristic is that it further includes: An automated limiting and fixing mechanism is provided above the test chamber (1), which includes a limiting post (5), a fixing plate (6), a connecting block (7), a fixing frame (8), a connecting frame (9), a support frame (10), a rotating rod (11), a limiting rod (12), a rotating rod (13), and a motor (14). A fixing plate (6) is provided above the test chamber (1), and a limiting post (5) is installed below the fixing plate (6). A connecting block (7) is fixedly installed at equal intervals above the fixing plate (6), and the connecting block (7) is slidably installed on the outside of the fixing frame (8). The placement plate (2) is provided with a high-efficiency pressing mechanism below it. The high-efficiency pressing mechanism includes an extrusion block (20), a bracket (21), a push rod (22), a slide frame (23), a toggle rod (24), and a stabilizing frame (25). The extrusion blocks (20) are symmetrically arranged on the left and right sides below the placement plate (2). A bracket (21) is installed below the extrusion block (20). A push rod (22) is fixedly connected to the lower middle part of the bracket (21). A slide frame (23) is installed inside the push rod (22).

2. The dynamic crack resistance testing machine according to claim 1, characterized in that: The test chamber (1) has a sliding plate (2) installed inside, and the inner side of the plate (2) has symmetrically opened placement slots (3), and the placement slots (3) are filled with samples (4), and the upper part of the samples (4) is tightly attached to the limit post (5).

3. The dynamic crack resistance testing machine according to claim 2, characterized in that: The left and right sides of the placement plate (2) are fixedly connected with connecting posts (15), and mounting blocks (16) are installed on the outside of the connecting posts (15), and a locking block (17) is engaged with the bottom of the mounting blocks (16).

4. The dynamic crack resistance testing machine according to claim 3, characterized in that: The mounting block (16) and the locking block (17) are fixedly connected by a threaded rod (18), and an electric telescopic rod (19) is fixedly connected to the bottom of the locking block (17).

5. The dynamic crack resistance testing machine according to claim 1, characterized in that: A connecting frame (9) is installed on the rear side of the connecting block (7), and the middle rear side of the connecting frame (9) is slidably installed inside the support frame (10), and the support frame (10) is fixedly connected to the test chamber (1).

6. The dynamic crack resistance testing machine according to claim 5, characterized in that: A rotating rod (11) is connected to the rear side of the middle part of the connecting frame (9), and a sliding groove is provided inside the rotating rod (11). A rotating rod (13) is slidably connected inside the sliding groove inside the rotating rod (11), and a motor (14) is connected to the rear side of the rotating rod (13).

7. A dynamic crack resistance testing machine according to claim 6, characterized in that: A limiting rod (12) is rotatably connected to the left rear of the rotating rod (11), and the limiting rod (12) is fixedly connected to the test chamber (1).

8. The dynamic crack resistance testing machine according to claim 1, characterized in that: The slide frame (23) is internally slidably connected to a lever (24), and a motor (14) is connected to the rear side of the lever (24). A stabilizing frame (25) is fixedly connected to the right side of the motor (14), and a test chamber (1) is connected to the right side of the stabilizing frame (25).

Images