Nanometer energy-absorbing safety protection friction plate

Abstract

The application belongs to the technical field of safety protection devices, and discloses a nano energy-absorbing safety protection friction plate, which comprises a fixed steel structure, a buffer energy-absorbing module, a first connecting part and a fixed part, wherein the buffer energy-absorbing module comprises an elastomer sleeve, the elastomer sleeve is provided with a second connecting part, the second connecting part is fixedly connected with the first connecting part of the fixed steel structure, the elastomer sleeve is provided with a first cavity, the symmetry plane of the first cavity is coincident with the symmetry plane of the elastomer sleeve, the first cavity is filled with a nano energy-absorbing module, the nano energy-absorbing module is composed of nano energy-absorbing material encapsulated by polyurethane elastomer, and the nano energy-absorbing material is prepared by mixing non-wetting liquid and nano porous material. The first cavity is internally provided with a nano buffer module and pores, different buffer effects are achieved at different stages, and the buffer energy-absorbing effect of the friction plate is increased.

Description

Technical Field

[0001] This invention relates to the field of safety protection device technology, and in particular to a nano-energy-absorbing safety protection friction plate. Background Technology

[0002] Trackless rubber-tired vehicles are widely used in auxiliary transportation in near-horizontal inclined shafts or adits due to their speed, efficiency and flexibility. However, due to the possibility of brake failure, gear slippage, or improper driver operation during vehicle operation, "runaway" accidents may occur, especially during inclined shaft transportation, causing casualties and affecting safe production in the mine.

[0003] In existing technologies, such as patent publication number CN112278003A, a friction plate for protecting vehicles from stall in inclined mine tunnels is disclosed. The friction plate includes a nanofluid energy-absorbing structure and an outer polyurethane layer covering it. The nanofluid energy-absorbing structure includes a high-strength elastic outer layer filled with nanofluid material. In use, the friction plate is placed on the tunnel wall. Its structure is simple and suitable for mass production. In this technical solution, when a vehicle impacts the friction plate, the deformation of the polyurethane outer layer compresses the internal nanofluid energy-absorbing structure, allowing a non-wetting liquid to enter the nanoporous material and absorb energy using interfacial energy. Therefore, its buffering energy absorption mainly consists of: polyurethane outer layer deformation + energy absorption by the nanofluid energy-absorbing structure. This solution has good buffering energy absorption effect, but its "texture" is relatively hard, meaning it can exert a large buffering effect within a very short time and distance, resulting in a large reaction force. Summary of the Invention

[0004] To overcome the problem of poor buffering effect in the prior art, the present invention aims to provide a nano-energy-absorbing safety friction plate. By setting nano-buffering modules and pores inside the first cavity, the energy-absorbing modules that provide buffering in the initial stage are: elastic body outer shell deformation + gas compression energy absorption. As the vehicle impact process proceeds, the energy-absorbing modules that provide buffering are: elastic body outer shell deformation + nano-energy-absorbing module buffering energy absorption, thereby increasing the energy-absorbing effect of the friction plate.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A nano-energy-absorbing safety friction plate, comprising:

[0007] A fixed steel structure, the fixed steel structure having a fixing part and a first connecting part;

[0008] The buffer energy-absorbing module includes an elastomer outer shell with a second connecting portion fixedly connected to a first connecting portion of the fixed steel structure. A first cavity is provided inside the elastomer outer shell, with the symmetry plane of the first cavity coinciding with that of the elastomer outer shell. The first cavity is filled with a nano-energy-absorbing module and also contains pores. The nano-energy-absorbing module is composed of a nano-energy-absorbing material encapsulated in polyurethane elastomer, and the nano-energy-absorbing material is prepared by mixing a non-wetting liquid with a nanoporous material.

[0009] Furthermore, the volume ratio of the nano-energy-absorbing module to the pores is 8-9:1.

[0010] Furthermore, the nano-energy-absorbing module is a nano-energy-absorbing sphere, and the first cavity is a cuboid. The dimensions of the nano-energy-absorbing sphere and the dimensions of the first cavity satisfy the following formula:

[0011]

[0012] Where L is the length of the first cavity, H is the height of the first cavity, W is the width of the first cavity, r is the radius of the nano-energy-absorbing sphere, λ is the correction coefficient, and [] is the rounding function.

[0013] Furthermore, the cross-section of the elastomer jacket includes an arc-shaped impact surface facing the impact direction, and the side opposite to the arc-shaped impact surface is a second connecting portion. The arc-shaped impact surface and the two sides of the second connecting portion form a tangent portion. The minimum distance between the first cavity and the arc-shaped impact surface and the minimum distance between the first cavity and the second connecting portion are not less than 1 / 3 of the height of the first cavity.

[0014] Furthermore, the arc-shaped impact surface is an arc, and a strip-shaped protrusion with an arc-shaped cross-section is provided on the arc-shaped impact surface facing the impact direction. The center of the arc-shaped protrusion is located on the arc-shaped impact surface, and its radius is 0.008-0.009 of the radius of the arc-shaped impact surface.

[0015] Furthermore, the fixed steel structure is provided with a reinforcing part, which is located on both sides of the fixed steel structure and is perpendicular to the first connecting part; the reinforcing part is elastically pressed against and fixedly connected to the cut edge part, and the height of the reinforcing part accounts for 80%-90% of the height of the cut edge part.

[0016] Furthermore, the elastomeric outer sheath includes:

[0017] An elastic housing having an opening;

[0018] The first elastic sealing structure is made of the same material as the elastic shell, and the side of the first elastic sealing structure is coated with adhesive and then inserted into the opening.

[0019] Furthermore, it also includes a second cavity symmetrically arranged on both sides of the first cavity. The cross-section of the second cavity includes a bottom parallel to the second connecting part, an arc-shaped surface with the same center as the arc-shaped impact surface but different radii, and a side wall connecting the bottom and the arc-shaped surface. The side walls of the first cavity and the second cavity that are close to each other are parallel to each other.

[0020] The distance between the two adjacent side walls of the first cavity and the second cavity is less than the distance between the bottom and the second connecting part and less than the distance between the arc-shaped surface and the arc-shaped impact surface;

[0021] The second cavity is filled with nano-energy-absorbing material.

[0022] Furthermore, multiple second chambers are provided on both sides of the first chamber, and the multiple second chambers on each side are connected in sequence through a one-way valve, which has the function of allowing gas to pass through.

[0023] Furthermore, along the length of the buffer energy absorption module, the volume of the second cavity gradually increases from the middle to both sides of the buffer energy absorption module.

[0024] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0025] This invention fills a first cavity with nano-energy-absorbing modules. The first cavity consists of nano-energy-absorbing modules and gaps. Compared to existing technologies, when a vehicle impacts the protective friction plate, the elastomer outer sleeve deforms first, compressing the first cavity. The first cavity includes nano-energy-absorbing modules and gaps, thus providing two types of buffering effects: the gaps absorb energy through gas compression, similar to compression in a sealed cylinder. Compared to nanofluid energy absorption, the gaps are "softer" and can provide a longer buffering time and distance. The buffering effect increases with the amount of compression. The nano-energy-absorbing modules absorb energy through interfacial energy generated by the entry of non-wetting liquid into the nanoporous material. Compared to gas compression energy absorption, the gaps are "harder". When the first cavity is filled with gaps and nano-energy-absorbing modules, upon vehicle impact with the friction plate, the gaps within the sealed first cavity compress and absorb energy, reducing the reaction force of the vehicle impact. While the nano-energy-absorbing modules also provide a slight cushioning effect at this stage, gas compression energy absorption is the primary influencing factor. As the vehicle continues to compress the gaps during its movement, when the effective range of the nano-energy-absorbing modules is reached, the nano-energy-absorbing modules primarily provide cushioning for the vehicle. Therefore, the technical solution provided by this invention can initially provide cushioning energy absorption through a combination of elastic body outer deformation and gas compression energy absorption. As the vehicle impact progresses, the cushioning energy absorption module becomes a combination of elastic body outer deformation and nano-energy-absorbing module cushioning energy absorption. Through the superposition and variation of these cushioning energy absorption effects, the cushioning energy absorption effect on the vehicle is improved, further reducing damage to the vehicle. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the friction plate structure provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of a fixed steel structure provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the buffer energy absorption module structure provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the nano-energy-absorbing module structure provided in an embodiment of the present invention;

[0031] Figure 5This is a schematic cross-sectional view of the buffer energy absorption module provided in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the formation of the first cavity provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of a friction plate structure with a second cavity provided in an embodiment of the present invention;

[0034] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at point AA;

[0035] Figure 9 A schematic diagram of a friction plate structure with a second cavity on each side of the first cavity provided in an embodiment of the present invention.

[0036] In the diagram: 1. Fixed steel structure; 10. Fixing part; 11. First connecting part; 12. Reinforcing part; 2. Buffer energy absorption module; 20. Elastic body outer sleeve; 200. Arc-shaped impact surface; 201. Cut edge part; 202. Strip-shaped protrusion; 203. Elastic shell; 204. First elastic sealing structure; 2020. Arc-shaped center; 21. Second connecting part; 22. First cavity; 23. Nano energy absorption module; 24. Second cavity; 240. Bottom; 241. Arc-shaped surface; 242. Side wall. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention.

[0039] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0040] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0041] In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The invention will be further described below with reference to the accompanying drawings and embodiments.

[0043] To address the limitations of existing technologies, this embodiment provides a technical solution. The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0044] It should be noted that the nano-energy-absorbing balls in this invention utilize TPU-encapsulated nano-energy-absorbing materials. These materials are prepared by mixing a non-wetting liquid with a nanoporous material. The non-wetting liquid includes one or more of the following: deionized water, lubricating oil, ethylene glycol, and glycerol, or a mixture of these alcohols and water solvents. The nanoporous material is one or more of the following: nanoporous molecular sieves ZSM-5, ZSM-22, zeolite, silica, alumina, silica, activated carbon, titanium dioxide, and carbon nanotubes. The energy absorption density can reach over 30 J / g, and it is a uniform, flowable liquid under normal conditions. When subjected to external impact, the external kinetic energy forces the non-wetting liquid into the pores of the nanoporous material, converting the mechanical work of the external force into solid-liquid interfacial energy and frictional heat. After the external force is removed, the non-wetting liquid flows out of the nanopores, allowing the material to be reused multiple times.

[0045] like Figures 1-4 This invention provides a nano-energy-absorbing safety friction plate, comprising:

[0046] A fixed steel structure 1, the fixed steel structure having a fixing part 10 and a first connecting part 11;

[0047] The buffer energy absorption module 2 includes an elastomer outer shell 20, on which a second connecting part 21 is provided. The second connecting part 21 is fixedly connected to the first connecting part 11 of the fixed steel structure 1. A first cavity 22 is provided inside the elastomer outer shell 20. The symmetry plane of the first cavity 22 coincides with the symmetry plane of the elastomer outer shell 20, i.e., the X-plane. The first cavity 22 is filled with a nano-energy absorption module 23. The nano-energy absorption module 23 is composed of a nano-energy absorption material encapsulated by a polyurethane elastomer. The nano-energy absorption material is prepared by mixing a non-wetting liquid with a nanoporous material.

[0048] The present invention, through the above-described configuration, fills the first cavity with a nano-energy-absorbing module. The first cavity consists of the nano-energy-absorbing module and a gap. Compared with the prior art, when a vehicle impacts the protective friction plate, the elastic outer sleeve 20 first deforms, and then compresses the first cavity 22. The first cavity includes the nano-energy-absorbing module and the gap, thus providing two types of buffering effects: the gap absorbs energy through gas compression, similar to compression in a sealed cylinder. Its buffering energy absorption effect is relatively soft compared to nanofluid energy absorption, providing a longer buffering time and movement distance. Its buffering energy absorption effect increases with the increase of compression. The nano-energy-absorbing module absorbs energy through buffering, utilizing the interfacial energy generated by the entry of a non-wetting liquid into the nanoporous material. Compared to gas compression energy absorption, its texture is relatively hard. When the first cavity is filled with gaps and nano-energy-absorbing modules, upon vehicle impact with the friction plate, the gaps within the sealed first cavity compress and absorb energy, reducing the reaction force of the vehicle impact. While the nano-energy-absorbing modules also provide a slight cushioning effect at this stage, gas compression energy absorption is the primary influencing factor. As the vehicle continues to compress the gaps during its movement, when the effective range of the nano-energy-absorbing modules is reached, the nano-energy-absorbing modules primarily provide cushioning for the vehicle. Therefore, the technical solution provided by this invention can initially provide cushioning energy absorption through a combination of elastic body outer deformation and gas compression energy absorption. As the vehicle impact progresses, the cushioning energy absorption module becomes a combination of elastic body outer deformation and nano-energy-absorbing module cushioning energy absorption. Through the superposition and variation of these cushioning energy absorption effects, the cushioning energy absorption effect on the vehicle is improved, further reducing damage to the vehicle.

[0049] The fixing part 10 serves to fix the friction plate in the designed position. The fixing part 10 of the friction plate can be fixed to the inner wall of the mine by fasteners such as rivets, bolts or screws. The fixing part of the present invention is a through hole, and the friction plate is fixed to the mine wall by bolts.

[0050] The first connecting part 11 is a flat plate-like structure, and the second connecting part 21 is a planar structure. Therefore, the second connecting part 21 can fit snugly against the flat plate-like structure of the first connecting part 11. The first connecting part and the second connecting part are fixedly connected to fix the buffer energy absorption module 2 to the fixed steel structure 1. The second connecting part 21 of the buffer energy absorption module 2 can be fixedly connected to the first connecting part 11 by screws, bolts, or a special structure. The special structure can be a cavity provided on the second connecting part 21, which is fixedly connected to the first connecting part 11 by negative pressure. In this embodiment of the invention, the buffer energy absorption module 2 is fixedly connected to the fixed steel structure 1 by adhesive bonding. Adhesive bonding can ensure that the friction plate, which is allowed to deform when the vehicle impacts the friction plate, produces a certain amount of relative displacement with the first connecting part of the fixed steel structure, thus improving the practicality of the friction plate.

[0051] The elastomer jacket 20 is preferably made of thermosetting elastomer material, including polyurethane elastomer, polyvinyl chloride, polyurea, or EPDM rubber.

[0052] The first cavity 22 is composed of a nano-energy-absorbing module 23 and pores, with the volume ratio of the nano-energy-absorbing module 23 to the pores being 8-9:1. As analyzed above, the buffering energy absorption effect of this invention includes: initial "elastic body outer casing deformation + gas compression energy absorption" and mid-to-late-stage "elastic body outer casing deformation + nano-energy-absorbing module buffering energy absorption." However, there are corresponding technical problems. Gas compression energy absorption uses a relatively soft material, which can provide a longer buffering time and displacement, but the side effect of this buffering energy absorption effect is increased deformation of the elastic body outer casing, especially at the first and second connecting parts. The fixed steel structure cannot produce corresponding deformation. If the deformation of the second connecting part 21 of the buffering energy-absorbing module 2 is too large, it will tear the interface between the first connecting part 11 and the second connecting part 21, making the friction plate more prone to damage. To solve this problem, this invention proposes to limit the volume occupied by the nano-energy-absorbing module and the pores, utilizing the advantages of gas compression energy absorption on the one hand, and solving the technical problem of damage caused by excessive deformation during gas compression energy absorption on the other.

[0053] In this invention, the plane of symmetry of the first cavity 22 coincides with the plane of symmetry of the elastic body outer sleeve 20, ensuring the uniformity of the deformation of the friction plate during the impact.

[0054] Preferably, in this invention, the nano-energy-absorbing module 23 is a nano-energy-absorbing sphere, and the first cavity 22 is a cuboid. The dimensions of the nano-energy-absorbing sphere and the dimensions of the first cavity 22 satisfy the following formula:

[0055]

[0056] Where L is the length of the first cavity, H is the height of the first cavity, W is the width of the first cavity, r is the radius of the nano-energy-absorbing sphere, λ is the correction coefficient with a value range of 0.66-0.68, and [] is the rounding function.

[0057] like Figure 3 and Figure 5 As shown, the cross-section of the elastic outer sleeve 20 includes an arc-shaped impact surface 200 facing the impact direction, and the side opposite to the arc-shaped impact surface 200 is the second connecting part 21. The arc-shaped impact surface 200 and the second connecting part 21 are cut at both sides to form a cut edge part 201. The minimum distance H1 between the first cavity 22 and the arc-shaped impact surface 200 and the minimum distance H2 between the first cavity 22 and the second connecting part 21 are not less than 1 / 3 of the height H0 of the first cavity. The above arrangement prevents the first cavity 22 from being damaged from a weak point during the impact.

[0058] like Figure 5 As shown, the arc-shaped impact surface 200 is an arc. On the arc-shaped impact surface, facing the impact direction, there is a strip-shaped protrusion 202 with an arc-shaped cross-section. The center 2020 of the arc-shaped protrusion 202 is located on the arc-shaped impact surface 200, and its radius is 0.008-0.009 of the radius of the arc-shaped impact surface. This arrangement satisfies the coordination between the arc-shaped protrusion 202 and the arc-shaped impact surface 200, improving the buffering and energy absorption effect of the friction plate.

[0059] like Figure 2 As shown, a reinforcing part 12 is provided on the fixed steel structure 1. The reinforcing part 12 is located on both sides of the fixed steel structure and is perpendicular to the first connecting part 11. The reinforcing part 12 is elastically pressed against and fixedly connected to the cut edge part 201. The height of the reinforcing part 12 accounts for 80%-90% of the height of the cut edge part. The elastic pressing and fixed connection between the reinforcing part 12 and the cut edge part 201 means that when the buffer energy absorption module is set on the fixed steel structure and the first connecting part 11 and the second connecting part 21 are in contact, the cut edge part 201 and the reinforcing part 12 are elastically pressed against each other and fixedly connected. In this embodiment of the invention, the cut edge part 201 is fixedly connected to the reinforcing part 12 by adhesive bonding. On the other hand, the height of the reinforcing part accounts for 80%-90% of the height of the cut edge part, that is, the height of the cut edge part is higher than the height of the reinforcing part, to prevent the vertical reinforcing part from directly contacting the vehicle and causing damage to the vehicle.

[0060] To achieve the first cavity 22 proposed in this invention, the following technical solutions are proposed, such as... Figure 6 As shown, the elastomer jacket 20 includes:

[0061] An elastic housing 203 having an opening;

[0062] The first elastic sealing structure 204 and the elastic shell 203 are made of the same material, and the first elastic sealing structure 204 is inserted into the opening after being coated with glue on its side.

[0063] like Figure 7 and Figure 8 As shown, the friction plate of the present invention further includes a second cavity 24 symmetrically arranged on both sides of the first cavity 22. The cross-section of the second cavity 24 includes a bottom 240 parallel to the second connecting portion 21, an arc-shaped surface 241 with the same center as the arc-shaped impact surface but a different radius, and a side wall 242 connecting the bottom 240 and the arc-shaped surface. The adjacent side walls of the first cavity 22 and the second cavity 24 are parallel to each other. The distance L0 between the adjacent side walls of the first cavity 22 and the second cavity 24 is less than the distance L1 between the bottom and the second connecting portion and less than the distance L2 between the arc-shaped surface and the arc-shaped impact surface. The second cavity 24 is filled with nano-energy-absorbing material. Since the nano-energy-absorbing module 23 has a certain volume, and when the nano-energy-absorbing module 23 is a nano-energy-absorbing ball, it has a certain diameter, the first cavity 22 has certain size requirements, resulting in poor buffering energy absorption effect on both sides of the first cavity 22. Therefore, the friction plate proposed in this invention also includes a second cavity 24, which is filled with nano-energy-absorbing material. Secondly, the principle of the nano-energy-absorbing material is that a non-wetting liquid enters the nanoporous material, so its volume needs to be compressed to achieve the nano-energy-absorbing effect. Based on this, the present invention proposes that the distance L0 between the two adjacent side walls of the first cavity 22 and the second cavity 24 is smaller than the distance L1 between the bottom and the second connecting part and smaller than the distance L2 between the arc-shaped surface and the arc-shaped impact surface. That is, the deformation resistance of the two adjacent side walls of the first cavity 22 and the second cavity 24 is smaller than the deformation resistance between the bottom and the second connecting part or between the arc-shaped surface and the arc-shaped impact surface. When the vehicle hits the friction plate, when the first cavity is squeezed by external force, the two side walls protrude outward, compressing the nano-energy-absorbing material in the second cavity 24. Due to the above-mentioned deformation resistance relationship, the second cavity produces a technical effect similar to volume compression, thereby increasing the energy absorption effect of the nano-energy-absorbing material in the second cavity 24.

[0064] like Figure 7 and Figure 9As shown, multiple second cavities 24 are respectively arranged on both sides of the first cavity 22, and the multiple second cavities 24 on each side are connected sequentially by a one-way valve. The one-way valve has the function of allowing gas to pass through but not allowing the nano-energy-absorbing material to pass through. The one-way valve realizes the filling of the nano-energy-absorbing material in the second cavity 24. By setting multiple second cavities 24 on both sides of the first cavity 22, it is prevented that when a single second cavity 24 is set, the deformation of the middle M in the length direction of the cavity is too large, which would lead to a deterioration in the buffering energy absorption effect. Figure 9 As shown.

[0065] Along the length of the friction plate, the volume of the second cavity 24 gradually increases from the middle M of the buffer energy absorption module 2 to both sides. Since the impact point when the vehicle hits the friction plate is at the horizontal position of the middle M, in order to prevent excessive deformation in the middle from damaging the second cavity 24, the volume of the second cavity 24 located at the middle M is smaller, while the volume of the second cavities 24 on both sides is larger, so as to balance the degree of deformation of each second cavity 24.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nano-energy-absorbing safety protective friction plate, characterized in that, include: A fixed steel structure (1) has a fixing part (10) and a first connecting part (11). The buffer energy absorption module (2) includes an elastomer jacket (20), on which a second connecting part (21) is provided. The second connecting part (21) is fixedly connected to the first connecting part (11) of the fixed steel structure (1). A first cavity (22) is provided inside the elastomer jacket (20). The symmetry plane of the first cavity (22) coincides with the symmetry plane of the elastomer jacket (20). The first cavity (22) is filled with a nano energy absorption module (23) and has pores. The nano energy absorption module (23) is made of a nano energy absorption material encapsulated by polyurethane elastomer. The nano energy absorption material is prepared by mixing a non-wetting liquid with a nanoporous material. The nano-energy-absorbing module (23) is a nano-energy-absorbing sphere, and the first cavity (22) is a cuboid. The dimensions of the nano-energy-absorbing sphere and the first cavity (22) satisfy the following formula: Where L is the length of the first cavity, H is the height of the first cavity, W is the width of the first cavity, and r is the radius of the nano-energy-absorbing sphere. [ ] represents the correction coefficient, and [ ] represents the floor function; The cross-section of the elastomer jacket (20) includes an arc-shaped impact surface (200) facing the impact direction, and the side opposite to the arc-shaped impact surface (200) is a second connecting part (21). The arc-shaped impact surface (200) and the two sides of the second connecting part (21) form a cut edge part (201). The arc-shaped impact surface (200) is an arc. On the arc-shaped impact surface facing the impact direction, there is a strip-shaped protrusion (202) with an arc-shaped cross-section. The arc-shaped center (2020) of the strip-shaped protrusion (202) is located on the arc-shaped impact surface (200). It also includes a second cavity (24) symmetrically arranged on both sides of the first cavity (22). The cross-section of the second cavity (24) includes a bottom (240) parallel to the second connecting part (21), an arc surface (241) with the same center as the arc impact surface but different in radius, and a side wall (242) connecting the bottom (240) and the arc surface. The two side walls of the first cavity (22) and the second cavity (24) are parallel to each other. The distance between the two adjacent side walls of the first cavity (22) and the second cavity (24) is less than the distance between the bottom and the second connecting part and less than the distance between the arc-shaped surface and the arc-shaped impact surface; The second cavity (24) is filled with nano-energy-absorbing material; Multiple second chambers (24) are provided on both sides of the first chamber (22), and the multiple second chambers (24) on each side are connected in sequence through a one-way valve, which has the function of allowing gas to pass through.

2. The nano-energy-absorbing safety friction plate according to claim 1, characterized in that, The volume ratio of the nano-energy-absorbing module (23) to the pores is 8-9:

1.

3. The nano-energy-absorbing safety protective friction plate according to claim 1, characterized in that, The minimum distance between the first cavity (22) and the arc-shaped impact surface (200) and the minimum distance between the first cavity (22) and the second connecting part (21) are not less than 1 / 3 of the height of the first cavity.

4. The nano-energy-absorbing safety protective friction plate according to claim 1, characterized in that, The radius of the arc-shaped center (2020) is 0.008-0.009 of the radius of the arc-shaped impact surface.

5. The nano-energy-absorbing safety protective friction plate according to claim 1, characterized in that, The fixed steel structure (1) is provided with a reinforcing part (12), which is located on both sides of the fixed steel structure (1) and is perpendicular to the first connecting part (11). The reinforcing part (12) is elastically pressed against and fixedly connected to the cut edge part (201), and the height of the reinforcing part (12) accounts for 80%-90% of the height of the cut edge part (201).

6. The nano-energy-absorbing safety protective friction plate according to claim 1, characterized in that, The elastomeric outer sheath (20) includes: An elastic housing (203) having an opening; The first elastic sealing structure (204) and the elastic shell (203) are made of the same material, and the side of the first elastic sealing structure (204) is filled into the opening after being coated with glue.

7. The nano-energy-absorbing safety protective friction plate according to claim 1, characterized in that, Along the length of the buffer energy absorption module (2), the volume of the second cavity (24) gradually increases from the middle to both sides of the buffer energy absorption module (2).

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