Safety helmet detection device with fixing function

Abstract

The utility model discloses a safety helmet detection device with a fixing function, which belongs to the technical field of safety helmet detection and comprises a support plate frame, an impact detection component is mounted at one end of the support plate frame, a safety helmet body is arranged in the support plate frame, the impact detection component comprises a fixed seat, a driving motor is mounted on one side of the fixed seat, and the driving motor is connected with the support plate frame. And the output end of the driving motor is in transmission connection with a driving ring, transmission arm plates are installed on the two sides of the driving ring, an L-shaped arm rod is arranged at the output end of the driving motor, and a damping cylinder frame is further arranged at the bottom of one end of the L-shaped arm rod. The high-frequency impact test device can perform high-frequency impact test on the top of the to-be-detected safety helmet body, can detect the toughness of safety helmet bodies of different structures or made of different materials, and can prevent the safety helmet body from falling off or being hit by a detected impact piece to fly during high-frequency impact test.

Description

Technical Field

[0001] This utility model relates to the field of safety helmet testing technology, and in particular to a safety helmet testing device with a fixed function. Background Technology

[0002] A safety helmet is a personal protective equipment used to protect the head, primarily to prevent injury from falling objects, impacts, or other accidents. It is typically made of high-strength plastics, fiberglass, or composite materials, offering excellent impact resistance and puncture resistance. Safety helmets are widely used in high-risk industries such as construction, mining, power generation, and manufacturing, serving as crucial protective tools for ensuring the personal safety of workers. Their structure generally includes a shell, liner, neck strap, and sweatband. Through scientific structural design, they effectively disperse impact forces, reducing the risk of injury from accidents, and are a key component of occupational health and safety management systems.

[0003] Currently, most existing helmet testing devices employ a free-fall test from a height to impact the helmet. This method effectively simulates the impact of falling objects on the helmet, thus assessing its overall impact resistance. However, this method cannot accurately reflect the toughness resulting from differences in helmet structural design or material properties. Furthermore, during simulated impacts, when the impactor collides with the helmet, the helmet is prone to detaching from the testing platform or being knocked away due to a lack of effective restraint, leading to unstable test results and affecting the accuracy and repeatability of the tests. Therefore, it has certain limitations in its application.

[0004] Based on this, we propose a safety helmet detection device with a fixed function to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this utility model, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] Therefore, the purpose of this utility model is to provide a safety helmet testing device with a fixed function, which can solve the problems that existing testing devices cannot accurately reflect the toughness performance of safety helmets, and that the lack of effective limiting causes safety helmets to fall off or be knocked away during impact, resulting in unstable test results.

[0007] To solve the above-mentioned technical problems, this utility model provides a safety helmet detection device with a fixing function, which adopts the following technical solution: it includes a support plate frame, an impact detection component is installed at one end of the support plate frame, a safety helmet body is arranged inside the support plate frame, the impact detection component includes a fixed seat, a drive motor is installed on one side of the fixed seat, a drive ring is drivenly connected to the output end of the drive motor, a drive arm plate is installed on both sides of the drive ring, an L-shaped arm is provided at the output end of the drive motor, and a shock-absorbing cylinder frame is also provided at the bottom of one end of the L-shaped arm;

[0008] A placement base is provided in the middle of the support plate frame, and arc-shaped clamps are provided on both sides of the inner wall of the support plate frame near the placement base.

[0009] Optionally, two sets of limiting grooves are provided on both sides of the arc-shaped clamping plate and the support plate frame. Two sets of guide rods are connected to one side of each of the two sets of arc-shaped clamping plates. The guide rods are slidably fitted to the support plate frame. A first compression spring is also sleeved and connected to the middle of the guide rod. The first compression spring is located between the two sets of limiting grooves.

[0010] Optionally, a metal collar is installed at one end of the L-shaped boom, and the metal collar is rotatably engaged with the output end of the drive motor. A transmission stop is provided at the end of the L-shaped boom near the metal collar, and the transmission stop matches the structure of the transmission arm plate. The transmission stop and the transmission arm plate are in contact engagement. A hinge seat is also installed at the end of the L-shaped boom away from the metal collar.

[0011] Optionally, the shock absorber frame has an adjustment groove inside, an impact link is connected to the middle of the adjustment groove, a circular baffle is installed in the middle of the impact link, and a second compression spring is sleeved on the middle of the side of the impact link near the circular baffle.

[0012] Optionally, the second compression spring and the circular baffle are both located inside the adjusting cylinder groove, the circular baffle is structurally matched with the adjusting cylinder groove, and the circular baffle and the adjusting cylinder groove are in a sliding fit.

[0013] Optionally, a hinge joint is installed at one end of the impact link, the hinge joint is matched with the hinge seat structure, the hinge joint and the hinge seat are hinged, and a detection impact element is threaded to the end of the impact link away from the hinge joint, the detection impact element can be spherical, hammer-shaped or conical.

[0014] In summary, this utility model has at least one of the following beneficial effects:

[0015] 1. The safety helmet testing device designed in this scheme uses high-frequency impact testing. Through the cooperation of the transmission arm plate, drive ring, and transmission stop, the impact linkage is driven to reciprocate up and down within the shock-absorbing cylinder frame. This allows for high-frequency impact testing of safety helmets of different structures or materials, achieving a comprehensive evaluation of the helmet's toughness performance. With the synergistic effect of the adjusting cylinder groove, impact linkage, circular baffle, and second compression spring within the shock-absorbing cylinder frame, the device can effectively absorb excess impact kinetic energy during impact testing. It can also form an adjustable buffer and rebound action on the detection impact component at the end of the impact linkage, achieving the purpose of protecting the device and the safety helmet, and extending the service life of the device and the safety helmet.

[0016] 2. The safety helmet testing device designed in this scheme, through the placement base in the middle of the support frame and the arc-shaped clamps on both sides of the inner wall, combined with the limiting groove, guide rod and first compression spring, can make the safety helmet firmly and elastically clamped. During high-frequency impact testing, the above-mentioned clamping structure design can prevent the safety helmet from falling off or being knocked away by the test impact component, realizing a stable and reliable testing process, improving the accuracy and repeatability of the test. At the same time, the device can also be connected by threads, which facilitates the disassembly, assembly, repair and replacement of the test impact component. Different types of test impact components can be replaced according to the testing requirements, realizing the adaptability to testing different types of safety helmets and meeting diverse testing standards and practical application scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the impact detection component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the support plate frame structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the arc-shaped clamping plate structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the L-shaped boom structure of this utility model;

[0023] Figure 6 This is a cross-sectional view of the shock-absorbing cylinder frame of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Support plate frame; 2. Impact detection assembly; 3. Safety helmet body; 4. Fixing base; 5. Drive motor; 6. Drive ring; 7. Transmission arm plate; 8. L-shaped arm; 9. Shock absorber frame; 10. Placement base; 11. Arc-shaped clamp; 12. Limiting groove; 13. Guide rod; 14. First compression spring; 15. Metal collar; 16. Transmission stop bar; 17. Hinge seat; 18. Adjusting cylinder groove; 19. Impact linkage; 20. Circular baffle; 21. Second compression spring; 22. Hinge joint; 23. Impact detection component. Detailed Implementation

[0025] 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.

[0026] Example: Refer to Figures 1 to 6 This utility model provides an embodiment of a safety helmet detection device with a fixing function, including a support frame 1. An impact detection component 2 is installed at one end of the support frame 1. A safety helmet body 3 is disposed inside the support frame 1. The impact detection component 2 includes a fixing seat 4. A drive motor 5 is installed on one side of the fixing seat 4. A drive ring 6 is connected to the output end of the drive motor 5. A drive arm plate 7 is installed on both sides of the drive ring 6. An L-shaped arm 8 is provided at the output end of the drive motor 5. A shock-absorbing cylinder frame 9 is also provided at the bottom of one end of the L-shaped arm 8. A placement base 10 is provided in the middle of the support frame 1. The support frame 1 is close to the placement base 10. Both sides of the inner wall are provided with arc-shaped clamps 11. The safety helmet testing device, through the cooperation between the support plate frame 1 and the impact testing component 2, can perform high-frequency impact tests on the top of the safety helmet body 3 to be tested. It can test the toughness of the safety helmet body 3 made of different structures or materials. It can also form an adjustable buffer and rebound action for the detection impact component 23 at the end of the impact linkage 19 when subjected to force. It can effectively absorb excess impact kinetic energy and prevent secondary damage to the device itself or the sample. At the same time, it can also prevent the safety helmet body 3 from falling off or being knocked away by the detection impact component 23 during high-frequency impact testing.

[0027] Both sides of the arc-shaped clamping plate 11 and the support plate frame 1 are provided with two sets of limiting grooves 12. Two sets of guide rods 13 are connected to one side of each set of arc-shaped clamping plates 11. The guide rods 13 and the support plate frame 1 are in sliding fit. A first compression spring 14 is also sleeved and connected to the middle of the guide rod 13. The first compression spring 14 is located between the two sets of limiting grooves 12. Through the cooperation between the limiting grooves 12, the guide rods 13 and the first compression spring 14, the arc-shaped clamping plate 11 can elastically clamp the two sides of the safety helmet body 3 worn on the placement base 10, which can prevent the safety helmet body 3 from falling off or being knocked away by the test impact component 23 during high-frequency impact testing. A metal collar 15 is installed at one end of the L-shaped arm 8. The metal collar 15 is connected to the output end of the drive motor 5. With a rotating fit, the L-shaped arm 8 is equipped with a transmission stop 16 at the end near the metal collar 15. The transmission stop 16 is structurally matched with the transmission arm plate 7, and there is a contact fit between the transmission stop 16 and the transmission arm plate 7. The L-shaped arm 8 is also equipped with a hinge seat 17 at the end away from the metal collar 15. Through the structural design of the transmission stop 16 matching the transmission arm plate 7 and the contact fit between the transmission stop 16 and the transmission arm plate 7, when the drive motor 5 is powered on, it can drive the impact link 19 to reciprocate and adjust inside the shock absorber frame 9. The reciprocatingly adjusted impact link 19, through the impact detection component 23 added to one end, can perform high-frequency impact tests on the top of the safety helmet body 3 to be tested, and can test the toughness of the safety helmet body 3 made of different structures or materials.

[0028] The shock absorber frame 9 has an adjusting groove 18 inside. An impact rod 19 is connected to the middle of the adjusting groove 18. A circular baffle 20 is installed in the middle of the impact rod 19. A second compression spring 21 is sleeved on the middle of the side of the impact rod 19 near the circular baffle 20. Through the coordinated use of the adjusting groove 18, the impact rod 19, the circular baffle 20, and the second compression spring 21, the reciprocating lifting and adjusting impact rod 19 can be guided and limited. Simultaneously, it can also provide adjustable buffering and rebound action for the impact detection element 23 at the end of the impact rod 19 when subjected to force, effectively absorbing excess impact kinetic energy. The second compression spring 21 and the circular baffle 20 are both located inside the adjusting groove 18. The circular baffle 20 is structurally matched to the adjusting groove 18. The circular baffle 20 and the adjusting cylinder groove 18 are in a sliding fit. Through the structural design of the sliding fit between the circular baffle 20 and the adjusting cylinder groove 18, the impact connecting rod 19 of the reciprocating lifting adjustment can play a guiding and limiting role. One end of the impact connecting rod 19 is equipped with a hinge joint 22. The hinge joint 22 is structurally matched with the hinge seat 17. The hinge joint 22 and the hinge seat 17 are in a hinge fit. The end of the impact connecting rod 19 away from the hinge joint 22 is threadedly connected to a detection impact element 23. The detection impact element 23 can be spherical, hammer-shaped or conical. Through the detection impact element 23 threadedly connected to one end of the impact connecting rod 19, the impact connecting rod 19 can disassemble, connect and repair the detection impact element 23, so that the device can replace the detection impact element 23 of spherical, hammer-shaped or conical shape according to the detection situation.

[0029] Working Principle: The safety helmet testing device designed in this scheme mainly consists of a support frame 1 and an impact testing component 2. The impact testing component 2 includes a fixed base 4, a drive motor 5, an L-shaped arm 8, and a shock-absorbing cylinder frame 9. The transmission arm 7 is used in conjunction with the drive ring 6, the transmission arm 7, and the transmission stop 16. When the drive motor 5 is powered on, because the transmission stop 16 and the transmission arm 7 are structurally matched and have a contact fit, the impact linkage 19 can be driven to reciprocate and adjust inside the shock-absorbing cylinder frame 9. The reciprocatingly adjusted impact linkage 19, through the impact detection component 23 installed at one end, can perform high-frequency impact tests on the top of the safety helmet body 3 to be tested. Through high-frequency impact tests, the toughness of the safety helmet body 3 made of different structures or materials can be verified.

[0030] The safety helmet detection device designed in this scheme uses a shock-absorbing cylinder frame 9 installed at the bottom of one end of the L-shaped arm 8. The shock-absorbing cylinder frame 9, through the cooperation of the adjusting cylinder groove 18, the impact connecting rod 19, the circular baffle 20, and the second compression spring 21, can guide and limit the reciprocating lifting and adjusting impact connecting rod 19. At the same time, it can also form an adjustable buffer and rebound action for the detection impact element 23 at the end of the impact connecting rod 19 when subjected to force, which can effectively absorb excess impact kinetic energy. The detection impact element 23 is threaded to one end of the impact connecting rod 19. The impact connecting rod 19 can disassemble, connect, repair and replace the detection impact element 23, so that the device can replace the detection impact element 23 with spherical, hammer-shaped or conical shapes according to the detection situation.

[0031] The safety helmet testing device designed in this scheme can place the safety helmet body 3 to be tested on the support plate frame 1 in the form of wearing by adding a placement base 10 in the middle of the support plate frame 1. By adding arc-shaped clamps 11 on both sides of the inner wall of the support plate frame 1, the arc-shaped clamps 11 can elastically clamp the safety helmet body 3 on both sides of the placement base 10 through the cooperation of the limiting groove 12, the guide rod 13, and the first compression spring 14. This can prevent the safety helmet body 3 from falling off or being knocked away by the test impact component 23 during high-frequency impact testing.

[0032] 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 safety helmet detection device with a fixing function, comprising a support frame (1), characterized in that: An impact detection assembly (2) is installed at one end of the support plate frame (1). A safety helmet body (3) is provided inside the support plate frame (1). The impact detection assembly (2) includes a fixed seat (4). A drive motor (5) is installed on one side of the fixed seat (4). A drive ring (6) is connected to the output end of the drive motor (5). A drive arm plate (7) is installed on both sides of the drive ring (6). An L-shaped arm (8) is provided at the output end of the drive motor (5). A shock absorber frame (9) is also provided at the bottom of one end of the L-shaped arm (8). The support frame (1) is provided with a placement base (10) in the middle, and the support frame (1) is provided with arc-shaped clamps (11) on both sides of the inner wall near the placement base (10).

2. The safety helmet detection device with a fixing function according to claim 1, characterized in that: Two sets of limiting grooves (12) are provided on both sides of the arc-shaped clamp (11) and the support plate frame (1). Two sets of guide rods (13) are connected to one side of each of the two sets of arc-shaped clamps (11). The guide rods (13) and the support plate frame (1) are in sliding fit. A first compression spring (14) is also sleeved and connected in the middle of the guide rods (13). The first compression spring (14) is located between the two sets of limiting grooves (12).

3. A safety helmet detection device with a fixing function according to claim 2, characterized in that: A metal collar (15) is installed at one end of the L-shaped arm (8). The metal collar (15) is rotatably engaged with the output end of the drive motor (5). A transmission stop (16) is provided at the end of the L-shaped arm (8) near the metal collar (15). The transmission stop (16) is structurally matched with the transmission arm plate (7). The transmission stop (16) is in contact with the transmission arm plate (7). A hinge seat (17) is also installed at the end of the L-shaped arm (8) away from the metal collar (15).

4. A safety helmet detection device with a fixing function according to claim 3, characterized in that: The shock absorber frame (9) has an adjustment groove (18) inside. An impact rod (19) is connected to the middle of the adjustment groove (18). A circular baffle (20) is installed in the middle of the impact rod (19). A second compression spring (21) is sleeved on the middle side of the impact rod (19) near the circular baffle (20).

5. A safety helmet detection device with a fixing function according to claim 4, characterized in that: The second compression spring (21) and the circular baffle (20) are both located inside the adjusting cylinder groove (18). The circular baffle (20) and the adjusting cylinder groove (18) are structurally matched, and the circular baffle (20) and the adjusting cylinder groove (18) are in sliding fit.

6. A safety helmet detection device with a fixing function according to claim 5, characterized in that: One end of the impact link (19) is equipped with a hinge joint (22), which is structurally matched with the hinge seat (17). The hinge joint (22) and the hinge seat (17) are hinged together. The end of the impact link (19) away from the hinge joint (22) is threadedly connected to a detection impact element (23), which can be spherical, hammer-shaped or conical.

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