A device for testing the impact resistance of an industrial material

Abstract

The utility model relates to an industrial material impact resistance testing device, including test frame, top bracing station, hammer and installation platform, top bracing station is arranged on test frame upper portion, and hammer is slidably connected on top bracing station, and hammer vertically slides up and down, and installation platform is arranged in test frame lower part, is used for the placement of safety helmet, installation platform includes fixed outer frame, overturns inner frame and overturns inner board and clamping assembly, and fixed outer frame is fixedly connected with test frame, and fixed outer frame is rotatably connected with overturning inner frame in, and overturning inner frame is rotatably connected with overturning inner board in, and overturning inner board is perpendicular with overturning inner frame rotation direction, and overturning inner board center corresponds with hammer up and down, and at least three clamping assemblies are evenly arranged on overturning inner board, and three clamping assemblies cooperate and hold safety helmet, the utility model can prevent the impact deviation influence test accuracy, still can realize the angle that safety helmet is at is adjusted, and the different parts of impact safety helmet, and the comprehensive evaluation safety helmet impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of impact resistance testing technology, and in particular to a device for testing the impact resistance of industrial materials. Background Technology

[0002] The importance of safety helmets is self-evident, therefore their impact resistance performance needs to undergo rigorous testing. Typically, a weight of a specified mass is dropped freely from a certain height onto the top of the helmet, and its performance is assessed by observing whether the shell deforms or fragments fall off. However, because safety helmets are subjected to high-speed impacts from heavy objects, and are not securely fastened, they may bounce off, affecting the accuracy of the test results.

[0003] Furthermore, most testing equipment can only perform impact tests at a fixed angle, meaning it can only impact the top of the helmet. However, in actual use, falling objects may impact different parts of the helmet. If only the top of the helmet is tested, the test lacks comprehensiveness. Moreover, there are helmets with different structural designs on the market. If only impact tests are performed at a fixed angle, it is difficult to accurately test safety performance and comprehensively evaluate the helmet's impact resistance. Summary of the Invention

[0004] To address the issues of conventional testing instruments having a single impact angle and safety helmets being prone to displacement upon impact, this invention provides an industrial material impact resistance testing device. It features a multi-angle rotating safety helmet mounting platform, allowing for flexible adjustment of the helmet's placement to facilitate impact on different parts of the helmet. Simultaneously, a clamping assembly is used to hold the helmet in place, preventing displacement upon impact.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An industrial material impact resistance testing device for testing the impact resistance of safety helmets includes a testing frame, a top support platform, a hammer, and a mounting platform. The top support platform is horizontally arranged on the upper part of the testing frame, and the hammer is slidably connected to the top support platform. The hammer slides vertically up and down, and the free fall of the hammer facilitates the provision of impact force. The mounting platform is arranged at the lower part of the testing frame for placing the safety helmet. The installation platform includes a fixed outer frame, a flip inner frame, a flip inner plate, and clamping components. The fixed outer frame is fixedly connected to the test frame. The flip inner frame is rotatably connected inside the fixed outer frame. The flip inner plate is rotatably connected inside the flip inner frame. The flip inner plate is perpendicular to the rotation direction of the flip inner frame, which facilitates flexible adjustment of the safety helmet's angle. The center of the flip inner plate corresponds vertically to the hammer. At least three clamping components are provided around the flip inner plate in a circumferential direction. The three clamping components work together to clamp the safety helmet, which helps prevent the safety helmet from shifting.

[0006] Furthermore, the test frame consists of four columns, which are connected and fixed together by a top support and a mounting platform. This improves the reliability of the test frame structure.

[0007] Furthermore, the top support platform is a flat plate with an "X"-shaped cross-section. The end of the top support platform is connected and fixed to the test frame. A sliding sleeve is vertically installed above the top support platform, and the hammer slides inside the sliding sleeve. The sliding sleeve facilitates vertical guidance for the free fall of the hammer.

[0008] Furthermore, the hammer includes a hammer rod and a hammer head. The length of the hammer rod is greater than that of the sliding sleeve. A circular hole is radially opened at the top of the hammer rod, and the hammer head is provided at the lower end of the hammer rod. The hammer head is placed outside the sliding sleeve. The sliding sleeve has multiple adjustment holes on its side wall, which are arranged vertically at intervals. A pull pin passes between the round hole and any one of the adjustment holes. This allows the hammer to fall from different heights and provide different impact forces.

[0009] Furthermore, the fixed outer frame is a rectangular frame, and the corners of the fixed outer frame are fixedly connected to the test frame. The flip inner frame is also a rectangular frame, and the size of the flip inner frame is smaller than that of the fixed outer frame, to ensure that the fixed outer frame does not interfere with the rotation of the flip inner frame. The inner frame of the flipping structure is provided with a stepped pivot at both ends. The small diameter end of the stepped pivot passes through the fixed outer frame and is threadedly connected to a nut.

[0010] Furthermore, the flip-up inner plate is a rectangular plate, and the size of the flip-up inner plate is smaller than that of the flip-up inner frame to ensure that the flip-up inner frame does not interfere with the rotation of the flip-up inner plate. Stepped rotating shafts are provided at both ends of the flip-up inner plate. The small diameter end of the stepped rotating shafts passes through the flip-up inner frame and is threaded with a nut. The axial direction of the stepped rotating shafts is perpendicular to the axial direction of the stepped rotating shafts.

[0011] Furthermore, a weight-reducing hole is provided in the center of the flip-up inner plate, and a spirit level is provided at each of the corners of the flip-up inner plate, which can directly display the rotation angle of the flip-up inner plate. The clamping assembly includes a clamping frame and a clamping bolt. The clamping frame has multiple sets of bolt holes arranged at intervals. One set of bolt holes is connected to the clamping bolt. The clamping bolt can be matched with different bolt holes to accommodate safety helmets of different heights. The head of the clamping bolt is covered with a rubber sleeve, which is tightly pressed against the safety helmet.

[0012] The beneficial effects of this utility model through the above technical solution are: This utility model features a rationally designed structure. The mounting platform is used to place the safety helmet, employing three clamping components to secure it, effectively preventing the helmet from shifting or falling off and ensuring a secure placement. It can also fix different models of safety helmets, improving the accuracy of impact testing. Simultaneously, the mounting platform can rotate flexibly. Nut one controls the rotation and locking of the flipping inner frame, and nut two controls the rotation and locking of the flipping inner plate. The rotation directions of the flipping inner frame and the flipping inner plate are perpendicular. Once the safety helmet is restrained on the flipping inner plate, the helmet's position can be flexibly adjusted by adjusting the mounting platform, ensuring different parts of the helmet align vertically with the hammer. This facilitates impact testing at any position on the helmet, allowing for a comprehensive evaluation of the helmet's impact resistance. Attached Figure Description

[0013] Figure 1 This is a front view of an industrial material impact resistance testing device according to this utility model.

[0014] Figure 2 This is a top view of an industrial material impact resistance testing device according to this utility model.

[0015] Figure 3 This is a top view of the installation platform of an industrial material impact resistance testing device according to this utility model.

[0016] The attached diagram is labeled as follows: 1 Test frame, 2 Top support platform, 3 Hammer, 31 Hammer rod, 32 Hammer head, 4 Mounting platform, 5 Sliding sleeve, 6 Pull pin, 7 Fixed outer frame, 8 Flipping inner frame, 9 Flipping inner plate, 10 Stepped shaft one, 101 Nut one, 11 Stepped shaft two, 111 Nut two, 12 Weight reduction hole, 13 Spirit level, 14 Clamping assembly, 141 Clamping bracket, 142 Clamping bolt, 143 Bolt hole, 144 Rubber sleeve. Detailed Implementation

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings: like Figures 1-3 As shown, an industrial material impact resistance testing device is used for testing the impact resistance of safety helmets. It includes a testing frame 1, a top support platform 2, a hammer 3, and a mounting platform 4. The testing frame 1 consists of four columns, which are connected and fixed together via the top support platform 2 and the mounting platform 4 to ensure the overall structural stability of the testing frame 1.

[0018] A horizontal support platform 2 is installed on the upper part of the test frame 1. The support platform 2 is a flat plate with an "X" shaped cross-section, and its end is connected and fixed to the column of the test frame 1. A hammer 3 is slidably connected to the support platform 2. During installation, a sliding sleeve 5 is vertically installed above the support platform 2, and the hammer 3 is slidably connected inside the sliding sleeve 5. The hammer 3 slides vertically up and down, and its free fall generates a certain impact force. The hammer 3 includes a hammer rod 31 and a hammer head 32. The hammer rod 31 is longer than the sliding sleeve 5, and the hammer head 32 is installed at the lower end of the hammer rod 31, with the hammer head 32 positioned outside the sliding sleeve 5.

[0019] To allow the hammer 3 to fall freely from different heights, a circular hole is radially formed at the top of the hammer rod 31. Simultaneously, multiple adjustment holes are formed on the side wall of the sliding sleeve 5, extending radially through the sleeve. These holes are spaced vertically. A pull pin 6 passes between the circular hole and any one of the adjustment holes to lock the hammer 3 in place. When the pull pin 6 is pulled out, the hammer 3 can fall vertically and freely. By engaging the pull pin 6 with the adjustment holes at different positions, the hammer 3 can be fixed at different heights, thus adjusting the impact force.

[0020] A mounting platform 4 is provided at the lower part of the test frame 1. The mounting platform 4 is used to place the safety helmet. The mounting platform 4 and the top support platform 2 are kept at a certain vertical distance. The mounting platform 4 includes a fixed outer frame 7, a flip inner frame 8, a flip inner plate 9, and a clamping assembly 14. The fixed outer frame 7 is a rectangular frame and is fixedly connected to the test frame 1, that is, the corners of the fixed outer frame 7 are fixedly connected to the columns of the test frame 1.

[0021] A rotating inner frame 8 is rotatably connected inside the fixed outer frame 7. The rotating inner frame 8 is also a rectangular frame, but its dimensions are smaller than those of the fixed outer frame 7. There is a gap between the outer wall of the rotating inner frame 8 and the inner wall of the fixed outer frame 7. To enable the rotation of the rotating inner frame 8, stepped pivots 10 are provided at both ends of the rotating inner frame 8. The smaller diameter end of the stepped pivot 10 passes through the fixed outer frame 7 and is threadedly connected to a nut 101. Tightening the nut 101 fixes the rotating inner frame 8, and loosening the nut 101 allows the rotating inner frame 8 to rotate.

[0022] A rotating inner plate 9 is rotatably connected inside the rotating inner frame 8. The rotating inner plate 9 is a rectangular plate, smaller than the rotating inner frame 8, and there is a gap between the side wall of the rotating inner plate 9 and the inner wall of the rotating inner frame 8. To enable the rotation of the rotating inner plate 9, stepped pivots 11 are provided at both ends of the rotating inner plate 9. The smaller diameter end of the stepped pivot 11 passes through the rotating inner frame 8 and is threadedly connected to a nut 111. Tightening the nut 111 fixes the rotating inner plate 9, and loosening the nut 111 allows the rotating inner plate 9 to rotate.

[0023] The rotation direction of the flip-up inner plate 9 is perpendicular to that of the flip-up inner frame 8, and consequently, the axial direction of the second step pivot 11 is perpendicular to the axial direction of the first step pivot 10. To facilitate the installation of the entire installation platform 4, both the fixed outer frame 7 and the flip-up inner frame 8 can be designed as a split structure, broken off at the corners and divided into four plates. The four plates are then welded together to form a corresponding rectangular frame, which facilitates the installation of the step pivot.

[0024] The center of the flip-up inner plate 9 corresponds vertically to the hammer 3. A weight-reducing hole 12 is located at the center of the flip-up inner plate 9. The weight-reducing hole 12 is a round hole and can be replaced with a dummy head model. During testing, the safety helmet can be worn on the dummy head model. Level bubbles 13 are located at the corners of the flip-up inner plate 9. The level bubbles 13 are circular universal level bubbles with graduations on their surface. The orientation of the flip-up inner plate 9 can be determined by the indication of the level bubbles 13, thereby determining the orientation of the safety helmet.

[0025] To prevent the safety helmet from shifting, at least three clamping components 14 are provided circumferentially on the inner flip plate 9. The three clamping components 14 cooperate to clamp the safety helmet. Specifically, the clamping component 14 includes a clamping frame 141 and a clamping bolt 142. The clamping frame 141 is bent into an "n" shape and has three sets of bolt holes 143. The three sets of bolt holes 143 are arranged vertically at intervals, and each set of bolt holes 143 has two bolt holes. One set of bolt holes 143 is connected to the clamping bolt 142. The head of the clamping bolt 142 is fitted with a rubber sleeve 144. The rubber sleeve 144 has a U-shaped cross-section and is tightly pressed against the safety helmet to achieve elastic contact with the safety helmet.

[0026] The principle of this invention is as follows: The safety helmet is placed on the flip-up inner plate 9, and the three clamping bolts 142 are tightened, causing the rubber sleeve 144 to press firmly against the helmet, thus fixing the helmet in place and preventing it from detaching from the flip-up inner plate 9 or shifting. Then, depending on the part to be tested, the rotation angle of the flip-up inner plate 9 and the flip-up inner frame 8 is adjusted, causing the helmet's posture to change until the part to be tested aligns vertically with the hammer 3. After tightening nuts 101 and 111, the helmet maintains its current posture. The hammer 3 is then dropped to impact the corresponding part, and the helmet's impact resistance is judged based on the deformation or breakage. Because the angles of the flip-up inner plate 9 and the flip-up inner frame 8 can be flexibly adjusted, the impact resistance of different parts of the helmet can be tested, enabling multi-angle impact resistance testing of the helmet.

[0027] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. An industrial material impact resistance testing device, used for testing the impact resistance of safety helmets, characterized in that, The test frame (1), top support platform (2), hammer (3) and mounting platform (4) are included. The top support platform (2) is horizontally arranged on the upper part of the test frame (1). The hammer (3) is slidably connected on the top support platform (2). The hammer (3) slides vertically up and down. The mounting platform (4) is arranged on the lower part of the test frame (1) for placing safety helmets. The installation platform (4) includes a fixed outer frame (7), a flip inner frame (8), a flip inner plate (9), and a clamping assembly (14). The fixed outer frame (7) is fixedly connected to the test frame (1). The flip inner frame (8) is rotatably connected inside the fixed outer frame (7). The flip inner plate (9) is rotatably connected inside the flip inner frame (8). The flip inner plate (9) and the flip inner frame (8) rotate in the same direction. The center of the flip inner plate (9) corresponds vertically to the hammer (3). At least three clamping assemblies (14) are provided around the flip inner plate (9). The three clamping assemblies (14) work together to clamp the safety helmet.

2. The impact resistance testing device for industrial materials according to claim 1, characterized in that, The test frame (1) consists of four columns, which are connected and fixed together by a top support (2) and an installation platform (4).

3. The industrial material impact resistance testing device according to claim 1, characterized in that, The top support platform (2) is a flat plate with an "X" shaped cross section. The end of the top support platform (2) is connected and fixed to the test frame (1). A sliding sleeve (5) is vertically installed above the top support platform (2), and the hammer (3) is slidably connected inside the sliding sleeve (5).

4. The industrial material impact resistance testing device according to claim 3, characterized in that, The hammer (3) includes a hammer rod (31) and a hammer head (32). The hammer rod (31) is longer than the sliding sleeve (5). A circular hole is radially opened at the top of the hammer rod (31). The hammer head (32) is provided at the lower end of the hammer rod (31). The hammer head (32) is placed outside the sliding sleeve (5). The sliding sleeve (5) has multiple adjustment holes on its side wall. The multiple adjustment holes are arranged vertically at intervals. A pull pin (6) is inserted between the round hole and any one of the adjustment holes.

5. The impact resistance testing device for industrial materials according to claim 1, characterized in that, The fixed outer frame (7) is a rectangular frame, and the corners of the fixed outer frame (7) are fixedly connected to the test frame (1). The flip inner frame (8) is also a rectangular frame, and the size of the flip inner frame (8) is smaller than that of the fixed outer frame (7). The inner frame (8) is provided with a stepped pivot (10) at both ends. The small diameter end of the stepped pivot (10) passes through the fixed outer frame (7) and is threadedly connected to a nut (101).

6. The industrial material impact resistance testing device according to claim 5, characterized in that, The flip-up inner plate (9) is a rectangular plate. The size of the flip-up inner plate (9) is smaller than that of the flip-up inner frame (8). The flip-up inner plate (9) has two stepped rotating shafts (11) at both ends. The small diameter end of the stepped rotating shaft (11) passes through the flip-up inner frame (8) and is threaded with a nut (111). The axial direction of the stepped rotating shaft (11) is perpendicular to the axial direction of the stepped rotating shaft (10).

7. The impact resistance testing device for industrial materials according to claim 1, characterized in that, The flip-up inner plate (9) has a weight reduction hole (12) in the center and a spirit level (13) is provided at the corners of the flip-up inner plate (9). The clamping assembly (14) includes a clamping frame (141) and a clamping bolt (142). The clamping frame (141) has multiple sets of bolt holes (143) arranged vertically at intervals. The clamping bolt (142) is connected to one set of bolt holes (143). A rubber sleeve (144) is fitted on the head of the clamping bolt (142), and the rubber sleeve (144) is tightly pressed against the safety helmet.

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