Safety helmet impact resistance test device

Abstract

The utility model relates to a safety helmet shock resistance test device, which comprises a protection box, a control panel, a lifting mechanism, a magnetic attraction mechanism, a drop hammer and a bionic hat rack, and is characterized in that the protection box is formed by connecting a bottom plate, four upright posts and a top cover from bottom to top, and the four upright posts are distributed at four corners between the upright posts and the top cover; baffles are arranged between the two sides of the protection box and the stand columns at the rear end, and a test area with a U-shaped opening is formed. A box door capable of being opened and closed is arranged between the stand columns at the front end of the protection box. The bionic hat frame is fixedly connected to the bottom plate. The control panel is erected on the side faces of the stand columns. The drop hammer is attracted to the lower end of the magnetic attraction mechanism through magnetic force and located over the bionic hat rack, and the control panel is electrically connected with the lifting mechanism and the magnetic attraction mechanism. According to the utility model, the safety helmet is worn through the bionic hat rack with the bionic shape, so that relatively real impact resistance test data can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of safety helmet quality inspection technology, specifically to a safety helmet impact resistance testing device. Background Technology

[0002] Safety helmets protect the head from injury when subjected to impacts such as falling objects. After design and manufacturing, safety helmets must undergo safety verification before mass production and market release. One such test is the impact resistance test, which directly verifies whether the helmet can protect the wearer's head from impacts by heavy objects in real-world dangerous situations. The existing impact resistance testing equipment in the workshop is custom-made and was not designed with the testing scenario in mind. The carrier for wearing the helmet is a domed cylinder, and the helmet can only be fastened to the dome. This not only makes it easy for the helmet to slip off, but also concentrates the force during the impact test, and the impact process differs significantly from the actual impact on the human head. Therefore, the test data obtained is difficult to reflect the true impact resistance effect of the helmet in use. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a helmet impact resistance testing device, which uses a bionic helmet frame to wear a helmet and conduct impact tests, thereby obtaining more realistic test data.

[0004] The technical solution of this utility model is as follows: a safety helmet impact resistance testing device, including a protective box, a control panel, a lifting mechanism, a magnetic attraction mechanism, a drop hammer, and a bionic helmet frame. The protective box is composed of a base plate, uprights, and a top cover connected from bottom to top. There are four uprights distributed at the four corners between the uprights and the top cover. Baffles are provided between the uprights on both sides and the rear of the protective box to form a test area with a U-shaped opening. An openable box door is provided between the uprights at the front of the protective box. The bionic helmet frame is fixedly connected to the base plate. The control panel is mounted on the side of the uprights. The lifting mechanism is installed at the lower end of the top cover. The magnetic attraction mechanism is installed at the lower end of the lifting mechanism. The drop hammer is magnetically attracted to the lower end of the magnetic attraction mechanism. The drop hammer is located directly above the bionic helmet frame. The control panel is electrically connected to the lifting mechanism and the magnetic attraction mechanism respectively.

[0005] Furthermore, it also includes a position sensor, which is installed on the upper end of the lifting mechanism, with the output end of the position sensor facing the top cover, and the position sensor is electrically connected to the control panel.

[0006] Furthermore, it also includes electrical wires, which hang from the lower end of the top cover and are covered with an insulating layer. The drop hammer is made of metal and has a locking slot on its side. One end of the wire is connected to the locking slot, and the other end of the wire is electrically connected to the control panel.

[0007] Furthermore, it also includes a warning light, which is installed on the side of the top cover, and a circuit can be formed between the control panel, the bionic hat frame, the drop hammer, the wires and the warning light.

[0008] Furthermore, the protective box is provided with a shelf on the side, and the shelf has a storage slot, into which the drop hammer can be embedded.

[0009] Furthermore, the bionic hat frame includes a bionic head and a support. The support is fixedly connected to the base plate, and the bionic head is fixedly connected to the support. The bionic head covers the top and front of the support. An elastic pad is provided on the outside of the bionic head. The lower end of the bionic head is the jaw position, and the pad protrudes from the lower end of the jaw position.

[0010] Furthermore, the bracket has a threaded hole in the middle, and a lead screw is connected inside the threaded hole. One end of the lead screw can abut against the inside of the bionic head where the jaw is located, and the other end of the lead screw has a knob.

[0011] Compared with the prior art, the advantages of this utility model are: the bionic helmet frame simulates the wearing state of a safety helmet in actual use, and the elastic padding layer simulates the real scenario where the head will move downward, forward or backward to buffer and dissipate force when the helmet is impacted, thus accurately assessing the impact resistance of the safety helmet in actual use. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the bionic hat rack of this utility model.

[0015] The components include: 1. Base plate; 2. Column; 3. Top cover; 4. Lifting mechanism; 5. Magnetic attraction mechanism; 6. Drop hammer; 7. Position sensor; 8. Wire; 9. Warning light; 10. Baffle; 11. Anti-collision layer; 12. Bionic hat rack; 1201. Bracket; 1202. Bionic head; 1203. Elastic pad; 1204. Jaw position; 13. Lead screw; 1301. Knob. Detailed Implementation

[0016] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0017] like Figure 1-2As shown, a safety helmet impact resistance testing device includes a protective box, a control panel, a lifting mechanism 4, a magnetic suction mechanism 5, a drop hammer 6, and a bionic helmet frame 12. The protective box is composed of a base plate 1, uprights 2, and a top cover 3 connected from bottom to top. There are four uprights 2, distributed at the four corners between the uprights 2 and the top cover 3. Baffles 10 are provided between the uprights 2 on both sides and the rear of the protective box, forming a U-shaped opening test area. A door that can be opened and closed is provided between the uprights 2 at the front of the protective box. During the test, the baffles 10 can play a safety protection role. An anti-collision layer 11 is also attached to the side of the baffle 10 located in the test area to prevent the drop hammer 6 from damaging the baffle 10. The door facilitates the wearing of safety helmets. The assembly and disassembly of the helmet are as follows: The bionic helmet frame 12 is fixedly connected to the base plate 1, the control panel is mounted on the side of the column 2, the lifting mechanism 4 is installed at the lower end of the top cover 3, the magnetic attraction mechanism 5 is installed at the lower end of the lifting mechanism 4, and the drop hammer 6 is magnetically attracted to the lower end of the magnetic attraction mechanism 5. The drop hammer 6 is located directly above the bionic helmet frame 12. The lifting mechanism 4 can drive the magnetic attraction mechanism 5 and the drop hammer 6 to lift and lower, thereby adjusting the height difference between the drop hammer 6 and the helmet to change the impact force of the drop hammer 6 on the helmet. The control panel is electrically connected to the lifting mechanism 4 and the magnetic attraction mechanism 5 respectively. The height of the lifting mechanism 4 can be adjusted through the control panel, and the magnetic attraction mechanism 5 can be powered on or off to attract or release the drop hammer 6.

[0018] This device also includes a position sensor 7, a wire 8, and a warning light 9. The position sensor 7 is installed on the upper end of the lifting mechanism 4, with its output end facing the top cover 3. The position sensor 7 is electrically connected to the control panel. The position sensor 7 uses laser ranging to accurately reflect the distance between the position sensor 7 and the top cover 3, thereby calculating the height of the drop hammer 6. The wire 8 hangs from the lower end of the top cover 3 and is covered with an insulating layer. The drop hammer 6 is made of metal and has a locking mechanism on its side. One end of the wire 8 is connected to the locking mechanism, and the other end is electrically connected to the control panel. When the conical drop hammer 6 is used to test the safety helmet, once the conical drop hammer 6 pierces the safety helmet, it will touch the metal bionic helmet frame 12, thus forming a circuit and triggering an alarm. The warning light 9 is installed on the side of the top cover 3. A circuit can be formed between the control panel, the bionic helmet frame 12, the drop hammer 6, the wire 8, and the warning light 9. The flashing warning light 9 and the built-in buzzer alert the operator that the safety helmet has been pierced. The protective box is equipped with a shelf on the side, and the shelf has a storage slot. The drop hammer 6 can be embedded in the storage slot to prevent it from falling and injuring people.

[0019] The bionic hat frame 12 includes a bionic head 1202 and a support 1201. The support 1201 is fixedly connected to the base plate 1, and the bionic head 1202 is fixedly connected to the support 1201. The bionic head 1202 covers the top and front of the support 1201. An elastic pad 1203 is provided on the outer side of the bionic head 1202. The lower end of the bionic head 1202 is a jaw position 1204, and the elastic pad 1203 protrudes from the lower end of the jaw position 1204. A connecting piece is provided on the inner side of the bionic head 1202, and a crossbar is provided on the upper end of the support 1201. The crossbar passes through the connecting piece and can be connected and fixed by bolts, or by... Welding provides a more stable connection and fixation, ensuring that the bionic helmet frame 12 has sufficient support to withstand multiple impact tests. After the helmet is fastened onto the elastic pad 1203 of the bionic head 1202, the helmet straps on both sides descend along the sides of the bionic head 1202 and engage with the jaw position 1204 via buckles, firmly securing the helmet to the elastic pad 1203 of the bionic head 1202. Simultaneously, the downward protruding elastic pad 1203 in front of the jaw position 1204 limits the movement of the helmet straps, ensuring the helmet remains stable and does not shift during impact, thus ensuring the stability of the test results. The bionic head 1202 simulates the wearing state of a helmet in actual use, and the elastic pad 1203 simulates the real scenario where the head will move downwards, forwards, or backwards to cushion and dissipate force when encountering an impact while wearing a helmet, allowing for an accurate assessment of the helmet's impact resistance in actual use. The bracket 1201 has a threaded hole in the middle, and a lead screw 13 is connected in the threaded hole. One end of the lead screw 13 can abut against the inside of the bionic head 1202 where the jaw position 1204 is located, and the other end of the lead screw 13 has a knob 1301. The knob 1301 can adjust the lead screw 13 to be close to or abut against the bionic head 1202 to provide support with different forces. During the impact test, it prevents the bionic head 1202 from deforming excessively downward and avoids damage to the durability of the bionic structure.

[0020] Description of the working principle of this utility model:

[0021] The helmet is placed on the bionic helmet frame 12 according to user habits. During wear, the helmet presses downwards against the elastic padding layer 1203. After the chin strap is successfully fastened, the reaction force of the elastic padding layer 1203 lifts the helmet, providing a relatively stable temporary fixation. The drop hammer 6 is magnetically attached to the lower end of the magnetic suction mechanism 5. The height of the drop hammer 6 is raised by the lifting mechanism 4, and accurate positioning is achieved through the position sensor 7, ensuring the drop difference between the drop hammer 6 and the helmet meets the test conditions. After closing the chamber door, the impact test can be conducted. The magnetic suction mechanism 5 is de-energized via the control panel, causing the drop hammer 6 to detach from the mechanism and strike the helmet repeatedly. Multiple impact tests are performed. If the helmet cracks during one impact test, the test is terminated, and the helmet is deemed unqualified because it failed to complete the entire test cycle.

[0022] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A helmet impact resistance testing device, comprising a protective box, a control panel, a lifting mechanism, a magnetic attraction mechanism, a drop hammer, and a bionic helmet frame, characterized in that: The protective box is composed of a base plate, columns, and a top cover connected from bottom to top. There are four columns, distributed at the four corners between the columns and the top cover. Baffles are provided between the columns on both sides and the rear of the protective box to form a test area with a U-shaped opening. There is an openable box door between the columns at the front of the protective box. The bionic hat frame is fixedly connected to the base plate. The control panel is mounted on the side of the columns. The lifting mechanism is installed at the lower end of the top cover. The magnetic attraction mechanism is installed at the lower end of the lifting mechanism. The drop hammer is magnetically attracted to the lower end of the magnetic attraction mechanism. The drop hammer is located directly above the bionic hat frame. The control panel is electrically connected to the lifting mechanism and the magnetic attraction mechanism respectively.

2. The safety helmet impact resistance testing device according to claim 1, characterized in that: It also includes a position sensor, which is installed on the upper end of the lifting mechanism. The output end of the position sensor faces the top cover, and the position sensor is electrically connected to the control panel.

3. The safety helmet impact resistance testing device according to claim 1, characterized in that: It also includes an electrical wire that hangs from the bottom of the top cover. The wire is covered with an insulating layer. The drop hammer is made of metal and has a locking slot on its side. One end of the wire is connected to the locking slot, and the other end of the wire is electrically connected to the control panel.

4. The safety helmet impact resistance testing device according to claim 3, characterized in that: It also includes a warning light, which is mounted on the side of the top cover, and a circuit can be formed between the control panel, the bionic hat frame, the drop hammer, the wires and the warning light.

5. The safety helmet impact resistance testing device according to claim 1, characterized in that: The protective box is equipped with a shelf on the side, and the shelf has a storage slot, into which the drop hammer can be embedded.

6. The safety helmet impact resistance testing device according to claim 1, characterized in that: The bionic hat frame includes a bionic head and a support. The support is fixedly connected to the base plate, and the bionic head is fixedly connected to the support. The bionic head covers the top and front of the support. An elastic padding layer is provided on the outside of the bionic head. The lower end of the bionic head is the jaw position, and the padding layer protrudes from the lower end of the jaw position.

7. The safety helmet impact resistance testing device according to claim 6, characterized in that: The bracket has a threaded hole in the middle, and a lead screw is connected in the threaded hole. One end of the lead screw can abut against the inside of the bionic head where the jaw is located, and the other end of the lead screw has a knob.

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