A new type of cantilever beam impact testing machine

Abstract

The utility model relates to cantilever beam impact testing machine technical field discloses a new -type cantilever beam impact testing machine, including shell one, the fixed plate is fixedly connected with the shell one inner wall, the fixed plate outer wall is fixedly connected with the pivot, the pivot one end is fixedly connected with the swing bar, the buckle no.

Description

Technical Field

[0001] This utility model relates to the field of impact testing machine technology, and in particular to a novel cantilever beam impact testing machine. Background Technology

[0002] The cantilever beam impact testing machine is an important piece of equipment for determining the impact toughness of non-metallic materials such as rigid plastics, reinforced nylon, fiberglass, ceramics, cast stone, and electrical insulation materials. Its working principle typically involves using a pendulum of a defined mass, which is lifted to a predetermined height and then released, impacting and breaking a specimen supported in a specified manner at a certain speed. The impact toughness of the material under dynamic load is then calculated and determined based on the remaining energy after the pendulum breaks the specimen (represented by the height of the pendulum's rebound). Due to its wide application in laboratories of research institutes, universities, and various industrial and mining enterprises, the safety, convenience, and testing efficiency of its operation are of paramount importance.

[0003] Existing products require manual stopping of the pendulum and cleaning of residue. Manually stopping the pendulum's swing can be dangerous. Precision sensors and software systems require regular calibration or upgrades, resulting in high maintenance costs. Samples must be precisely machined (e.g., notch depth, angle), otherwise the results will be significantly off-target. Traditional models are more lenient in this regard. Some irregularly shaped or ultra-thin samples may be difficult to fix, leading to test failure (e.g., thin films or soft materials). Wear and tear on mechanical parts after long-term use may affect test repeatability, requiring regular replacement. If the automatic anti-rebound device fails, it may threaten operational safety. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a new type of cantilever beam impact testing machine, which aims to improve the safety hazards caused by the need for manual stopping of the pendulum after the test in existing cantilever beam impact testing machines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel cantilever beam impact testing machine, comprising an outer shell, a fixing plate fixedly connected to the inner wall of the outer shell, a rotating shaft fixedly connected to the outer wall of the fixing plate, a swing rod fixedly connected to one end of the rotating shaft, a buckle one provided on the outer wall of the swing rod, a buckle two fixedly connected to the inner wall of the outer shell, and a braking assembly provided on the inner wall of the outer shell;

[0006] The braking assembly includes a brake caliper, which is disposed on the inner wall of a housing. A connecting rod is fixedly connected to the outer wall of the brake caliper, and a connecting rod is fixedly connected to the outer wall of the connecting rod. A connecting column is fixedly connected inside the housing. The inner wall of the connecting rod is rotatably connected to the outer wall of the connecting column. A connecting plate is rotatably connected to one end of the connecting rod. A pneumatic rod is fixedly connected to the upper surface of the connecting plate. A fixed shell is rotatably connected to the outer wall of the connecting column. A cylinder is fixedly connected to the upper surface of the fixed shell. The output end of the cylinder is fixedly connected to the upper surface of the connecting plate.

[0007] Furthermore, a second outer shell is fixedly connected to the inner wall of the first outer shell, a gear is provided inside the second outer shell, a rack is provided on the outer wall of the gear, a push plate is fixedly connected to one end of the rack, and a rocker arm is fixedly connected to the outer wall of the gear.

[0008] Furthermore, a support rod is fixedly connected to one inner wall of the outer shell, and a control panel is fixedly connected to one end of the support rod.

[0009] Furthermore, a base plate is fixedly connected to the inner wall of the outer shell, and a clip is fixedly connected to the upper surface of the base plate.

[0010] Furthermore, a clamping piece two is fixedly connected to the upper surface of the base plate, and a threaded push rod is threadedly connected inside the clamping piece two.

[0011] Furthermore, a storage box is fixedly connected to one outer wall of the outer shell, and the connecting post is disposed on one inner wall of the outer shell.

[0012] Furthermore, the outer wall of the brake caliper is provided with a rotating shaft, and the connecting plate is disposed above the brake caliper.

[0013] Furthermore, the second buckle is disposed on the inner wall of the outer casing, and the brake caliper is disposed above the pendulum.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this invention, after the impact test is completed, the cylinder can be activated, and the brake caliper can be driven via the air rod and linkage mechanism, including connecting rod one and connecting rod two, to quickly and forcefully clamp the main shaft of the pendulum. This automated braking method enables the high-speed swinging pendulum and pendulum to stop smoothly in a very short time, completely avoiding the potential personal safety risks caused by the need for manual intervention to stop the pendulum. At the same time, the rapid and stable braking also reduces the useless interference and data noise caused by the continuous swinging of the pendulum to the precision sensors, data acquisition systems, and software that may be equipped with the equipment, ensuring the stability of the testing environment and the safety of subsequent operations.

[0016] 2. In this utility model, the debris cleaning mechanism consists of a rocker arm, gears, a rack, and a pusher. After the test, the operator only needs to rotate the external rocker arm to drive the pusher to sweep away the material debris generated by the impact and automatically collect it into the external storage box. This design eliminates the tediousness and inconvenience of manually reaching into the equipment to clean the residue, significantly saves cleaning time, and improves the efficiency of continuous testing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a novel cantilever beam impact testing machine proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the support rod structure of a novel cantilever beam impact testing machine proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the rotating shaft structure of a novel cantilever beam impact testing machine proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the pusher section of a novel cantilever beam impact testing machine proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the rocker arm structure of a novel cantilever beam impact testing machine proposed in this utility model.

[0022] Legend:

[0023] 1. Outer shell 1; 2. Control panel; 3. Swing rod; 4. Clip 1; 5. Clip 2; 6. Support rod; 7. Fixing plate; 8. Pendulum; 9. Cylinder; 10. Fixing shell; 11. Connecting column; 12. Connecting plate; 13. Air rod; 14. Connecting rod 1; 15. Brake caliper; 16. Connecting rod 2; 17. Base plate; 18. Clip 1; 19. Clip 2; 20. Threaded push rod; 21. Rocker arm; 22. Rack; 23. Gear; 24. Outer shell 2; 25. Rotating shaft; 26. Push plate; 27. Storage box. 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] Reference Figure 1-3The present invention provides an embodiment of a novel cantilever beam impact testing machine, comprising an outer shell 1, a fixing plate 7 fixedly connected to the inner wall of the outer shell 1, a rotating shaft 25 fixedly connected to the outer wall of the fixing plate 7, a swing rod 3 fixedly connected to one end of the rotating shaft 25, a buckle 4 provided on the outer wall of the swing rod 3, a buckle 5 fixedly connected to the inner wall of the outer shell 1, and a braking assembly provided on the inner wall of the outer shell 1.

[0026] The braking assembly includes a brake caliper 15, which is disposed on the inner wall of the outer casing 1. A connecting rod 14 is fixedly connected to the outer wall of the brake caliper 15, and a connecting rod 2 16 is fixedly connected to the outer wall of the connecting rod 14. A connecting column 11 is fixedly connected inside the outer casing 1. The inner part of the connecting rod 14 is rotatably connected to the outer wall of the connecting column 11. A connecting plate 12 is rotatably connected to one end of the connecting rod 2 16. A pneumatic rod 13 is fixedly connected to the upper surface of the connecting plate 12. A fixed shell 10 is rotatably connected to the outer wall of the connecting column 11. A cylinder 9 is fixedly connected to the upper surface of the fixed shell 10. The output end of the cylinder 9 is fixedly connected to the upper surface of the connecting plate 12. The linear thrust generated by the cylinder 9 is converted into the opposing clamping force of the two arms of the brake caliper 15. The goal of the brake caliper 15 is to precisely clamp the main rotating shaft 25 fixed on the fixed plate 7 of the fuselage. The powerful pneumatic clamping force generates a huge braking torque through friction, which can force the swing arm, which is still swinging at high speed after the impact, to stop in a very short time, thereby avoiding safety accidents and saving time for the next test.

[0027] A second outer shell 24 is fixedly connected to the inner wall of outer shell 1. A gear 23 is installed inside outer shell 24, and a rack 22 is installed on the outer wall of gear 23. A pusher 26 is fixedly connected to one end of rack 22. When the operator rotates the rocker arm 21 outside the equipment, the gear 23, coaxially fixed with the rocker arm, rotates accordingly. Because the gear meshes with the horizontally positioned rack 22, the circular motion of gear 23 is precisely converted into the linear reciprocating motion of rack 22. The pusher 26, fixed to the front end of rack 23, acts like an automatic broom, performing a large-scale linear sweep on the bottom plate inside the equipment. The pusher 26 effectively collects and pushes all material fragments scattered after the impact test into the collection box 27 located on the outer wall of outer shell 1, thus achieving contactless and automated collection of fragments. The rocker arm 21 is fixedly connected to the outer wall of gear 23; a support is fixedly connected to the inner wall of outer shell 1. A control panel 2 is fixedly connected to one end of a rod 6 and a support rod 6; a base plate 17 is fixedly connected to the inner wall of the outer shell 1, and a clamping piece 18 is fixedly connected to the upper surface of the base plate 17; a clamping piece 29 is fixedly connected to the upper surface of the base plate 17, and a threaded push rod 20 is threadedly connected inside the clamping piece 29; a storage box 27 is fixedly connected to the outer wall of the outer shell 1, and a connecting post 11 is set on the inner wall of the outer shell 1; a rotating shaft 25 is set on the outer wall of the brake caliper 15, and a connecting plate 12 is set above the brake caliper 15; a buckle 25 is set on the inner wall of the outer shell 1, and the brake caliper 15 is set above the pendulum 8.

[0028] Working Principle: First, the operator clamps the sample. The standard or non-standard test sample is placed on the sample clamping device at the bottom of the equipment. This device consists of a base plate 17 fixed to the inner wall of the equipment housing 1, and clamping plates 18 and 19 on top. The operator rotates the manually operated threaded push rod 20, using its threaded transmission to precisely push clamping plate 19 towards clamping plate 18, thus firmly clamping the test sample in the preset impact position. This ensures that the sample will not slip or shift during the test, guaranteeing the accuracy of the impact energy absorption measurement. Next, the impact preparation stage begins. The pendulum rod 3 connected to the rotating shaft 25 is manually lifted until it reaches the predetermined impact angle or height required by the test procedure. At this time, the latch 4 on the pendulum rod 3 engages and locks with the latch 5 fixed to the inner wall of the housing 1, reliably fixing the pendulum 8 carrying enormous potential energy in the release position. Once everything is ready, the impact can be performed. Commands are issued via control panel 2 on support rod 6 to trigger the release mechanism, causing latch 4 and latch 5 to separate instantly. Under gravity, pendulum 3 swings downwards at high speed from a height, centered on pivot 25. The pendulum hammer 8, with its concentrated mass at the end, impacts the clamped test sample with extremely high linear velocity, breaking it in one strike. After the impact, for safety and efficiency, the system brakes the pendulum. After the impact energy is absorbed by the sample, pendulum 3 continues to oscillate. At this time, the braking assembly located inside housing 1 is activated. Cylinder 9, mounted on fixed housing 10, receives a signal and activates. Its cylinder 13, through a linkage mechanism consisting of connecting plate 12, connecting rod 2 16, and connecting rod 1 14, quickly drives brake caliper 15 to clamp the main pivot 25 fixed on fixed plate 7. Friction applies braking torque to the pivot, causing the still-swinging pendulum 3 to stop quickly and smoothly. Finally, debris is cleaned up. Material fragments generated during the impact test are scattered inside the equipment. To facilitate cleaning and recycling, the operator can rotate the external rocker arm 21, which drives the connected gear 23 to rotate, thereby causing the meshing rack 22 to move in a straight line. The pusher 26 at the end of the rack then sweeps the scattered fragments along a designated path and finally pushes them into the collection box 27 fixed to the outer wall of the outer casing 1, achieving centralized collection of fragments and maintaining the cleanliness of the test environment.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of cantilever beam impact testing machine comprising a housing (1), characterized in that: A fixing plate (7) is fixedly connected to the inner wall of the outer shell (1), a rotating shaft (25) is fixedly connected to the outer wall of the fixing plate (7), a swing rod (3) is fixedly connected to one end of the rotating shaft (25), a buckle (4) is provided on the outer wall of the swing rod (3), a buckle (5) is fixedly connected to the inner wall of the outer shell (1), and a braking assembly is provided on the inner wall of the outer shell (1). The braking assembly includes a brake caliper (15), which is disposed on the inner wall of the outer shell (1). A connecting rod (14) is fixedly connected to the outer wall of the brake caliper (15). A connecting rod (16) is fixedly connected to the outer wall of the connecting rod (14). A connecting column (11) is fixedly connected inside the outer shell (1). The inner wall of the connecting rod (14) is rotatably connected to the outer wall of the connecting column (11). A connecting plate (12) is rotatably connected to one end of the connecting rod (16). A pneumatic rod (13) is fixedly connected to the upper surface of the connecting plate (12). A fixed shell (10) is rotatably connected to the outer wall of the connecting column (11). A cylinder (9) is fixedly connected to the upper surface of the fixed shell (10). The output end of the cylinder (9) is fixedly connected to the upper surface of the connecting plate (12).

2. A new type of cantilever beam impact testing machine according to claim 1, characterized in that: The inner wall of the outer shell (1) is fixedly connected to the second outer shell (24). The second outer shell (24) is equipped with a gear (23). The outer wall of the gear (23) is equipped with a rack (22). One end of the rack (22) is fixedly connected to a push plate (26). The outer wall of the gear (23) is fixedly connected to a rocker arm (21).

3. A new type of cantilever beam impact testing machine according to claim 1, characterized in that: A support rod (6) is fixedly connected to the inner wall of the outer shell (1), and a control panel (2) is fixedly connected to one end of the support rod (6).

4. A new type of cantilever beam impact testing machine according to claim 1, characterized in that: The inner wall of the outer shell (1) is fixedly connected to a base plate (17), and the upper surface of the base plate (17) is fixedly connected to a clip (18).

5. A novel cantilever beam impact testing machine according to claim 4, characterized in that: The upper surface of the base plate (17) is fixedly connected to a clamping piece two (19), and the clamping piece two (19) is internally threaded with a threaded push rod (20).

6. A novel cantilever beam impact testing machine according to claim 1, characterized in that: A storage box (27) is fixedly connected to the outer wall of the outer shell (1), and the connecting column (11) is set on the inner wall of the outer shell (1).

7. A novel cantilever beam impact testing machine according to claim 1, characterized in that: The outer wall of the brake caliper (15) is provided with a rotating shaft (25), and the connecting plate (12) is provided above the brake caliper (15).

8. A novel cantilever beam impact testing machine according to claim 1, characterized in that: The second buckle (5) is disposed on the inner wall of the outer shell (1), and the brake caliper (15) is disposed above the pendulum (8).

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