A pressure-relieving energy-absorbing mining safety helmet

Abstract

The present invention provides a pressure-relieving energy-absorbing mining protective helmet, which includes a helmet main body, a wireless communication module, a protective face mask, a pressure-relieving module, and an energy-absorbing module. The pressure-relieving module is arranged above the top of the outer side of the helmet main body and includes a main conical spiral spring, a pressure-bearing structure welded to the top of the main conical spiral spring, and a secondary conical spiral spring arranged below the pressure-bearing structure. The helmet main body is composed of a shell, an intermediate layer, and a lining. The energy-absorbing module is composed of a first energy-absorbing module and a second energy-absorbing module. The first energy-absorbing module is arranged between the shell and the intermediate layer, and the second energy-absorbing module is arranged between the intermediate layer and the lining. The pressure-relieving module plays a buffering role when the roof dangerous rock hits the helmet, reducing the impact on the helmet main body. The energy-absorbing module reduces the impact force for the second time, effectively alleviating the force of the dangerous rock hitting the helmet and making the protection effect of the helmet better.

Description

Technical Field

[0001] The present invention belongs to the technical field of helmets, and particularly relates to a pressure-relieving energy-absorbing protective helmet for mining use. Background Art

[0002] A helmet is a device used to protect the safety of the human head. Underground in a mine, it is essential for workers to wear a helmet during work. An effective protective helmet can better ensure the safe work of underground workers and further promote the safe production of the mine.

[0003] Currently, operations such as drilling and blasting during underground production are somewhat dangerous, and production dust is harmful. Existing helmets are rarely used by mine workers, with poor protective performance, poor buffering effect and wearing comfort, and are not convenient for actual use. At the same time, the lighting underground is insufficient and the visibility is low, making it difficult to see the working workers during the operation of various mining machinery.

[0004] Patent CN216701794U discloses a safety helmet with a buffer structure. In this solution, the impact is reduced by setting a buffer unit and a shock-absorbing component in the helmet body. The buffer unit includes outer ribs, inner ribs, connecting curved rods, a shock-absorbing component and a mounting base plate. Eight inner ribs are circumferentially and fixedly connected to the inner surface of the safety helmet body. One end of each of the eight inner ribs is fixedly connected to one end of each of the eight connecting curved rods respectively. The other end of the connecting curved rod is fixedly connected to the shock-absorbing component. Eight outer ribs are circumferentially and fixedly connected to the bottom end of the safety helmet body. The top of the eight outer ribs is fixedly connected to the shock-absorbing component. The bottom surface of the shock-absorbing component is fixedly connected to the mounting base plate. Patent CN216493714U discloses a fire helmet with a ventilation function. In this solution, multiple shock-absorbing components are arranged between the outer shell and the inner liner. The shock-absorbing component includes a telescopic rod and a spring. Multiple springs are respectively sleeved on the outer peripheral walls of multiple telescopic rods. One end of the telescopic rod is fixedly installed on the inner peripheral wall of the outer shell, and one end is fixedly installed on the outer peripheral wall of the inner liner. Patent CN216019386U discloses a construction site safety helmet with a protection device. In this solution, a spring buffer is disclosed to be arranged between the support plate and the protection partition in the helmet body. The above-mentioned safety helmets or protective helmets can achieve buffering of the impact force to a certain extent, but there are still problems such as small buffering force or complex structure.

[0005] Therefore, designing a protective helmet with high safety factor and convenient wearing suitable for underground workers is an urgent problem to be solved at present. Summary of the Invention

[0006] Aiming at the defects existing in the above-mentioned prior art, the purpose of the present invention is to provide a pressure-relieving energy-absorbing protective helmet for mining use, which is a multi-functional integrated protective helmet with functions of pressure relief, energy absorption, early warning, filtering harmful gases and wireless communication, aiming to solve common problems such as poor filtering effect of underground dust, workers being injured by falling rocks and difficult communication in a noisy environment.

[0007] To achieve the above object, the present invention is implemented by the following technical solutions:

[0008] A pressure-relieving energy-absorbing protective helmet for mining use, characterized in that it includes a helmet main body, a wireless communication module, a special protective face mask for mines, a pressure-relieving module, and an energy-absorbing module. The pressure-relieving module is arranged above the top of the outer side of the helmet main body and includes a main conical spiral spring, a pressure-bearing structure welded to the top of the main conical spiral spring, and a secondary conical spiral spring arranged below the pressure-bearing structure; the helmet main body is composed of a shell, an intermediate layer, and a lining. The energy-absorbing module is composed of a first energy-absorbing module and a second energy-absorbing module. A first energy-absorbing module is arranged between the shell and the intermediate layer, and a second energy-absorbing module is arranged between the intermediate layer and the lining. The first energy-absorbing module is composed of a micro conical spiral spring, and the second energy-absorbing module is composed of a micro air pressure piston device.

[0009] Further, the bottom of the main conical spiral spring is directly integrated onto the helmet main body using a hot melt technique. There are five groups of secondary conical spiral springs under the pressure-bearing structure. The pressure-bearing structure is a 0.5 cm thick steel plate. At the corresponding positions of the secondary conical spiral springs on the lower side of the pressure-bearing structure, grooves with a depth of 0.2 cm are provided. The secondary conical spiral springs are embedded in the grooves and welded to the pressure-bearing structure.

[0010] Further, both the main conical spiral spring and the secondary conical spiral spring are made of high-strength metal and have relatively high elastic potential energy. The inclination angle of the main conical spiral spring is consistent with the curvature of the upper side of the helmet main body, and there is a certain distance to ensure compressibility.

[0011] Further, the shell of the helmet main body is made of hard plastic, the intermediate layer is a light metal structure, the lining is composed of a light metal-wrapped cooling gel pad. Grooves corresponding to the size of the top of the micro conical spiral spring are provided inside the shell. The upper part of the first energy-absorbing module is embedded in the grooves and connected to the shell, and the bottom of the first energy-absorbing module is welded to the intermediate layer. The intermediate layer and the top of the second energy-absorbing module are integrally designed, and the bottom of the second energy-absorbing module is welded to the lining. The inner side of the lining is in contact with the user's scalp using a cotton mesh structure.

[0012] Further, the micro air pressure piston device of the second energy-absorbing module includes a sealed cylinder body and a compressible piston rod placed inside the cylinder body. The piston rod is a plastic structure and has a metal seal at the upper part for welding to the intermediate layer. The cylinder body is made of light metal and is welded to the lining. The bottom diameter of the micro conical spiral spring of the first energy-absorbing module is the same as the diameter of the sealed cylinder body of the second energy-absorbing module, and they are arranged in one-to-one correspondence.

[0013] Further, the wireless communication module includes an antenna, earphones, a sound collecting device, and a sound amplifying device; the antenna is connected to the upper side of one side of the helmet body by a buckle; the earphones are distributed under both sides of the helmet body and are connected to the helmet body through sliding rails, and can be lifted up and down according to the positions of individual's ears. The sound collecting device and the sound amplifying device are installed on the mine protection face mask. Among them, the circuits of the sound collecting device, the sound amplifying device, and the earphones are built into the shell of the helmet body and are connected to the antenna.

[0014] Further, a power supply and two LED lights are arranged in the antenna. The front side illumination light is a natural light LED light, and the rear side warning light is a red strobe LED light.

[0015] Further, the special mine protection face mask is connected to both sides of the helmet body through a rigid rotating shaft, and includes a fixed arm connected to the rigid rotating shaft, a tensioning device connected to the fixed arm, and a main mask body connected to the tensioning device. A secondary mask body that can wrap the chin extends from the bottom of the main mask body.

[0016] Further, the special mine protection face mask includes three layers. The innermost layer is a comfortable perforated latex material with strong plasticity, which is convenient for fitting the face; the middle layer is a breathable layer with a certain filtering function; the outermost layer is a high-density filtering layer with a certain protective effect, which can highly filter dust and harmful substances generated by blasting.

[0017] Further, the tensioning device is an elastic elastic band.

[0018] Advantages

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By providing a helmet body, a wireless communication module, and a special mine protection face mask, the present invention can solve the problem of difficult communication in noisy environments such as underground fans. The language information is obtained through the sound collecting device installed on the special mine protection face mask and transmitted to the earphones of surrounding people through the antenna device. At the same time, a small sound amplifying device is also equipped to implement a dual redundant system to ensure effective communication even when the wireless device fails. The wireless communication module can avoid many safety accidents caused by communication barriers.

[0021] 2. By providing a wireless communication module, its antenna contains a power supply and two LED lights. The natural light emitted from the front side can be used for lighting, replacing the existing hanging lights, which is more convenient to wear and use. The rear side is an LED red strobe light, which can play a warning role for trackless equipment and operators in the underground environment with poor lighting conditions, ensuring the personal safety of workers and endowing the helmet with another early warning and protection function.

[0022] 3. The present invention is provided with a special protective face mask for mines. The protective face mask has a rigid rotating shaft that can be fixed at any angle. At the same time, the auxiliary mask body wraps the lower jaw to play a role in fixing the helmet. And the protective face mask is divided into three layers. The innermost layer is a plastic layer, which is a comfortable milk tape with holes to ensure a good fit with the face and achieve the best protection effect. The outermost layer is provided with a high-density filter layer to prevent harmful gases and dust in the mine from endangering the health of workers.

[0023] 4. The present invention is provided with a pressure relief module and an energy absorption module. Through the main conical spiral spring, the auxiliary conical spiral spring and the pressure-bearing mechanism, it plays a buffering role when the roof dangerous rock hits the helmet, reducing the impact on the main body of the helmet. Through the first energy absorption module and the second energy absorption module, the impact force is reduced for the second time, effectively reducing the force of the dangerous rock hitting the helmet and playing a role in protecting the staff. In the present invention, the conical spiral spring design is adopted, which has stronger compressibility compared with the vertical spring and is suitable for the narrow space between the sandwich layers of the helmet main body, making it have higher elastic potential energy. Therefore, this design will make the protection effect of the helmet better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the helmet provided by the present invention;

[0025] Figure 2 is a schematic diagram of the helmet structure after removing the bearing plate provided by the present invention;

[0026] Figure 3 is an enlarged schematic diagram of the pressure relief module provided by the present invention;

[0027] Figure 4 is a schematic diagram of the internal structure of the helmet provided by the present invention;

[0028] Wherein: 1 helmet main body, 201 buckle, 202 antenna, 203 slide rail, 204 earphone, 205 sound receiving device, 206 sound amplifying device, 301 rigid rotating shaft, 302 tensioning device, 303 auxiliary mask body, 304 plastic layer, 305 breathable layer, 306 high-density protective layer, 307 main mask body, 401 auxiliary spiral spring, 402 main spiral spring, 403 pressure-bearing structure, 404 card slot, 501 outer shell, 502 first energy absorption module, 503 intermediate layer, 504 second energy absorption module, 505 inner lining. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0030] Embodiment

[0031] Refer to Figures 1-4 , a pressure-relieving mine energy-absorbing protective helmet, including a helmet main body 1, a wireless communication module, a special mine protective face mask, a pressure-relieving module, and an energy-absorbing module. The pressure-relieving module is arranged above the outer top of the helmet main body 1 and includes a main conical spiral spring 402, a pressure-bearing structure 403 welded to the top of the main conical spiral spring, and a secondary conical spiral spring 401 arranged below the pressure-bearing structure 403; the helmet main body is composed of a shell 501, an intermediate layer 503, and a lining 505. The energy-absorbing module is composed of a first energy-absorbing module 502 and a second energy-absorbing module 504. A first energy-absorbing module is arranged between the shell 501 and the intermediate layer 503, and a second energy-absorbing module is arranged between the intermediate layer 503 and the lining 505. The first energy-absorbing module 502 is composed of micro conical spiral springs, and the second energy-absorbing module 504 is composed of micro air pressure piston devices.

[0032] Further, the bottom of the main conical spiral spring 402 is directly integrated with the helmet main body 1 using hot melt technology. There are five groups of secondary conical spiral springs 401 under the pressure-bearing structure 403. The pressure-bearing structure 403 is a 0.5 cm thick steel plate. At the corresponding positions of the secondary conical spiral springs 401 on the lower side of the pressure-bearing structure 403, grooves 404 with a depth of 0.2 cm are provided. The secondary conical spiral springs 401 are embedded in the grooves and welded to the pressure-bearing structure 403.

[0033] Further, both the main conical spiral spring 402 and the secondary conical spiral spring 401 are made of high-strength metal and have relatively high elastic potential energy. The inclination angle of the main conical spiral spring 402 is consistent with the upper curvature of the helmet main body 1, and there is a certain distance at the same time to ensure compressibility.

[0034] The pressure-bearing structure 403 can generate a plane on the upper part of the helmet main body 1, increasing the contact area with the dangerous rock, enabling the main conical spiral spring 402 to play its full role, and the secondary conical spiral spring 401 plays an auxiliary role to keep the pressure-bearing structure 403 horizontal.

[0035] Further, the shell 501 of the helmet main body 1 is made of hard plastic, the intermediate layer 503 is a light metal structure, and the lining 505 is composed of a light metal-wrapped cooling gel pad. The three-layer structure makes the helmet main body more stable and has better protection performance. The metal in the lining is used for welding and fixing, and the cooling gel pad plays a role in cooling, alleviating the harm of the high-temperature underground environment to the worker's brain. On the other hand, the compressibility of the gel pad can assist the pressure-relieving module and the energy-absorbing module to play a buffering role.

[0036] Inside the outer shell 501, there is a clamping groove corresponding to the size of the top of the micro conical spiral spring. The upper part of the first energy absorption module 502 is embedded in the clamping groove and connected to the outer shell. The bottom of the first energy absorption module 502 is welded to the intermediate layer 503. The intermediate layer 503 and the top of the second energy absorption module 504 are integrally designed. The bottom of the second energy absorption module 504 is welded to the inner lining 505. The inner side of the inner lining is in contact with the user's scalp by a cotton mesh structure.

[0037] Furthermore, the micro pneumatic piston device of the second energy absorption module 504 includes a sealed cylinder body and a compressible piston rod placed inside the cylinder body. The piston rod is made of plastic and has a metal seal at the upper part for welding to the intermediate layer 503. The cylinder body is made of lightweight metal and is welded to the inner lining 505. The bottom diameter of the micro conical spiral spring of the first energy absorption module 502 is the same as the diameter of the sealed cylinder body of the second energy absorption module 504, and they are arranged in one-to-one correspondence. When an external impact force acts on the helmet, first, the first buffering is carried out through the pressure relief module outside the helmet, and then the secondary buffering is carried out through the first energy absorption module and the second energy absorption module. When the micro pneumatic piston device is subjected to the impact force, it drives the piston rod to compress towards the inside of the cylinder body. When the impact force disappears, the compression rod can slowly rebound to its original position.

[0038] Certainly, the micro pneumatic piston device can also be fixed to the intermediate layer and the inner lining in a clamping form. At this time, clamping grooves are opened on the intermediate layer and the inner lining, and both ends of the micro pneumatic piston device are respectively embedded in the clamping grooves and welded and fixed. Certainly, both the piston rod and the cylinder body can also be made of plastic materials. At this time, both ends of the micro pneumatic piston device are respectively embedded in the clamping grooves and fixed by hot melting.

[0039] Furthermore, the wireless communication module includes an antenna 202, earphones 204, a sound collection device 205, and a sound amplification device 206; the antenna 202 is connected to the upper side of one side of the helmet main body 1 through a buckle 201; the earphones 204 are distributed below both sides of the helmet main body and are connected to the helmet main body 1 through a slide rail 203 and can be lifted up and down according to the positions of personal ears. The sound collection device and the sound amplification device are arranged on the mine protection face mask. Among them, the circuits of the sound collection device 205, the sound amplification device 206, and the earphones 204 are built into the shell of the helmet main body and are connected to the antenna.

[0040] The antenna 202 is connected by a buckle, which is convenient for disassembling and replacing the antenna. The power supply of the antenna uses a built-in battery and can be used for 4 to 5 hours. An antenna replacement box is set underground to facilitate workers to replace the antenna.

[0041] The sound receiving device 205 converts the voice information into an electrical signal and transmits it to the loudspeaker 206 and the antenna 202 at the same time. The coil (voice) in the loudspeaker 206 generates a corresponding magnetic field after the electrical signal converted by the sound receiving device passes through. This magnetic field interacts with the permanent magnet of the loudspeaker, causing the diaphragm and coil (voice) of the loudspeaker to vibrate, and at the same time, driving the surrounding large area of ​​air to vibrate, converting mechanical energy into sound energy, which is used to amplify the command sound issued by the user;

[0042] The antenna 202 converts the electrical signal into electromagnetic waves and transmits them to nearby people through the air medium. After the antennas of the nearby people receive the electromagnetic waves, they convert them back into electrical signals and transmit them to the headphones, thereby realizing instant communication underground and avoiding the problem of ineffective communication when underground fans and other mining machinery are in operation. At the same time, it also protects the ears and reduces the damage of noise to the workers' eardrums.

[0043] Furthermore, the antenna 202 is provided with a power supply and two LED lights, the front lighting light is a natural light LED light, and the rear warning light is a red strobe LED light. The main function is to transmit signals, and at the same time, it can realize the lighting function and the warning function for vehicles and other machinery, to ensure the safety of workers and reduce the occurrence of accidents.

[0044] Furthermore, the mine-specific protective mask is connected to both sides of the helmet body 1 through a rigid shaft 301, and the shaft angle can be adjusted and fixed according to the user's facial contour. It includes a fixed arm connected to the rigid shaft, a tensioning device 302 connected to the fixed arm, and a main cover body 307 connected to the tensioning device. A secondary cover body 303 that can wrap the chin extends from the bottom of the main cover body. The helmet is fixed to the user's head by the tensioning device 302 and the secondary cover body 303, and there is no need to use traditional straps to fix it, which is convenient for the user to wear. The integrated design of the protective mask and the helmet body 1 can avoid common problems such as putting on the helmet first and not being able to wear the protective mask normally during use.

[0045] Furthermore, the mine-specific protective mask comprises three layers, the innermost layer is a comfortable latex material 304 with strong plasticity and holes, which is convenient for fitting to the face; the middle layer is a breathable layer 305, which has a certain filtering function; the outermost layer is a high-density filter layer 306, which has a certain protective effect and is used to filter dust and harmful substances.

[0046] Furthermore, the tensioning device 302 is an elastic band with a certain elasticity.

[0047] In summary, the pressure-relieving mine energy-absorbing protective helmet, through the helmet body 1, wireless communication module, special mine protective face mask, pressure-relieving module, and energy-absorbing module, is a multi-functional integrated protective helmet with functions of pressure relief, energy absorption, early warning, filtering harmful gases, and wireless communication, solving common problems such as poor dust filtration effect underground, workers being injured by falling rocks, and communication in noisy environments.

[0048] The above embodiments are merely examples clearly illustrating the present invention and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the embodiments here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. An energy-absorbing and pressure-relieving mining safety helmet, characterized in that, It includes a helmet body (1), a wireless communication module, a special protective face mask for mines, a pressure relief module, and an energy absorption module. The pressure relief module is arranged above the outer top of the helmet body (1) and includes a main conical spiral spring (402), a pressure-bearing structure (403) welded to the top of the main conical spiral spring, and a secondary conical spiral spring (401) installed below the pressure-bearing structure; the helmet body is composed of a shell (501), an intermediate layer (503), and a lining (505). The energy absorption module is composed of a first energy absorption module (502) and a second energy absorption module (504). A first energy absorption module is arranged between the shell (501) and the intermediate layer (503), and a second energy absorption module is arranged between the intermediate layer (503) and the lining (505). The first energy absorption module (502) is composed of a micro conical spiral spring, and the second energy absorption module (504) is composed of a micro air pressure piston device; The bottom of the main conical spiral spring (402) is directly integrated onto the helmet body (1) using a hot melt technique. Five groups of secondary conical spiral springs (401) are provided under the pressure-bearing structure (403). The pressure-bearing structure (403) is a steel plate with a thickness of 0.5 cm. At the corresponding positions of the secondary conical spiral springs (401) on the lower side of the pressure-bearing structure (403), a groove (404) with a depth of 0.2 cm is provided. The secondary conical spiral springs (401) are embedded in the grooves and welded to the pressure-bearing structure (403); Both the main conical spiral spring (402) and the secondary conical spiral spring (401) are made of high-strength metal and have a relatively high elastic potential energy. The inclination angle of the main conical spiral spring (402) is consistent with the upper curvature of the helmet body (1), and there is a certain distance to ensure compressibility; The shell (501) of the helmet body (1) is made of hard plastic, the intermediate layer (503) is a light metal structure, and the lining (505) is composed of a light metal wrapped with a cooling gel pad. Grooves corresponding to the top sizes of the micro conical spiral springs are provided inside the shell (501). The upper part of the first energy absorption module (502) is embedded in the grooves and connected to the shell. The bottom of the first energy absorption module (502) is welded to the intermediate layer (503). The intermediate layer (503) and the top of the second energy absorption module (504) adopt an integrated design. The bottom of the second energy absorption module (504) is welded to the lining (505). The inner side of the lining is in contact with the user's scalp using a cotton mesh structure; The micro air pressure piston device of the second energy absorption module (504) includes a sealed cylinder body and a compressible piston rod placed inside the cylinder body. The piston rod is a plastic structure and is attached with a metal seal at the upper part for welding to the intermediate layer (503). The cylinder body is made of light metal and is welded to the lining (505). The bottom diameter of the micro conical spiral spring of the first energy absorption module (502) is the same as the diameter of the sealed cylinder body of the second energy absorption module (504), and they are arranged in one-to-one correspondence.

2. The pressure-relieving energy-absorbing mining safety helmet according to claim 1, wherein The wireless communication module includes an antenna (202), earphones (204), a sound collection device (205) and a sound amplification device (206); the antenna (202) is connected to the upper side of one side of the helmet body (1) through a buckle (201); the earphones (204) are distributed below both sides of the helmet body and are connected to the helmet body (1) through a slide rail (203), and can be lifted up and down according to the positions of individual ears; the sound collection device and the sound amplification device are arranged on the mine protection face mask, wherein the circuits of the sound collection device, the sound amplification device and the earphones are built into the shell of the helmet body and are connected to the antenna.

3. The energy-absorbing and protective mining helmet with pressure relief according to claim 2, characterized in that, A power supply and two LED lights are arranged in the antenna (202), the front side illumination light is a natural light LED light, and the rear side warning light is a red strobe LED light.

4. The pressure-relieving energy-absorbing mining safety helmet according to claim 1, wherein, The mine special protection face mask is connected to both sides of the helmet body (1) through a rigid rotating shaft (301), and includes a fixed arm connected to the rigid rotating shaft, a tensioning device (302) connected to the fixed arm, and a main mask body (307) connected to the tensioning device. A sub-mask body (303) that can wrap the chin extends from the bottom of the main mask body.

5. The pressure-relieving energy-absorbing mining safety helmet according to claim 4, characterized in that, The mine special protection face mask (3) includes three layers. The innermost layer is a comfortable latex material (304) with strong plasticity and cavities, which is convenient for fitting the face; the middle layer is a breathable layer (305) with a certain filtering function; the outermost layer is a high-density filtering layer (306) with a certain protective effect, which is used for filtering dust and harmful substances.

6. The pressure-relieving energy-absorbing mining safety helmet according to claim 4, characterized in that, The tensioning device (302) is an elastic elastic band.

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