A protection device for precision equipment against blast waves

Abstract

The utility model discloses a kind of precision equipment protection devices of resisting detonation wave, it is related to equipment protection technical field, including the outer layer impact-resistant structure, middle energy-absorbing buffer layer and inner layer precision equipment fixed cabin of sequentially laminated settings, outer layer impact-resistant structure is formed by at least two layers of high-strength alloy layer and at least one layer of damping layer alternately superimposed, for dispersing weaken detonation wave impact force;Middle energy-absorbing buffer layer includes framework and filling layer, for absorbing dissipation residual impact energy;Inner layer precision equipment fixed cabin is used to steady load precision equipment and provide damping protection.This application reaches effectively resist the impact of detonation wave to precision equipment, absorb impact energy, steady load precision equipment and provide damping, sound insulation, electromagnetic shielding and other protection effects, guarantee the normal operation of precision equipment in detonation environment.

Description

Technical Field

[0001] This utility model relates to the field of equipment protection technology, specifically a precision equipment protection device to resist detonation waves. Background Technology

[0002] In the field of protective equipment technology, with social development, scenarios involving explosive operations, such as mining, engineering blasting, and military exercises, are increasingly common. While these scenarios drive progress in related industries, they also bring a serious problem: surrounding precision equipment is highly susceptible to the effects of detonation waves. As a powerful shock wave, the high pressure and high energy of detonation waves pose a significant threat to the normal operation and lifespan of precision equipment. Precision equipment plays a crucial role in many fields, including modern industry and scientific research; damage to it can not only cause economic losses but also disrupt the normal operation of related work. Therefore, how to effectively protect precision equipment from the impact of detonation waves has become an urgent problem to be solved in this field.

[0003] In the past, conventional protective measures were typically employed to protect precision equipment from detonation waves. One common method was simple physical barriers, which used obstacles to block the propagation of the detonation wave and reduce its direct impact on the equipment. Another common method was the use of conventional cushioning materials, which absorbed and dispersed the energy of the detonation wave, thus reducing damage to the equipment. Some protective measures combined multiple materials and structures to improve the protective effect, but overall, these methods were largely based on traditional protection concepts and material applications.

[0004] However, existing protective measures have significant shortcomings. Simple physical barriers are insufficient to cope with the complex propagation characteristics and powerful impact of detonation waves, making them easily breached and unable to provide reliable protection for precision equipment. Conventional cushioning materials, due to limitations in their material properties and structural design, are also ill-suited to effectively handle the complex impacts of detonation waves and cannot meet the comprehensive, high-reliability protection requirements for precision equipment. This leaves precision equipment still vulnerable to risks such as structural damage and loosening of components, ultimately affecting its accuracy and normal operation. Utility Model Content

[0005] This invention provides a precision equipment protection device to resist detonation waves, with the aim of at least solving one of the technical problems of the prior art as pointed out in the background art.

[0006] This utility model provides the following technical solution to achieve the above objectives: A precision equipment protection device for resisting detonation waves includes an outer impact-resistant structure, an intermediate energy-absorbing buffer layer, and an inner precision equipment fixing chamber stacked sequentially. The outer impact-resistant structure is used to disperse and weaken the impact force of the detonation wave. The intermediate energy-absorbing buffer layer is used to absorb and dissipate the remaining impact energy. The inner precision equipment fixing chamber is used to stably support the precision equipment and provide vibration reduction protection. The outer impact-resistant structure includes a composite structure formed by alternating layers of at least two high-strength alloy layers and at least one damping layer. The high-strength alloy layers and the damping layers are connected by welding or bonding. The intermediate energy-absorbing buffer layer includes a skeleton and a filling layer covering the skeleton. The filling layer is fixed to the high-strength alloy layer and the inner equipment fixing chamber, respectively.

[0007] By adopting the above technical solution, the outer layer uses a high-strength impact-resistant layer, which allows most of the blast wave to be converted into vibrations of the impact layer. By using an internal energy-absorbing structure, the energy is dissipated during propagation, thereby blocking the blast wave and reducing the vibration amplitude, so that the internal equipment is not greatly affected. Through the combination of structural design and materials, the structure can effectively cope with the complex impact of the blast wave, meet the requirements for comprehensive and high-reliability protection of precision equipment, and enable the precision equipment to operate normally.

[0008] In the aforementioned precision equipment protection device for resisting detonation waves, the surface of the high-strength alloy layer is provided with a continuous corrugated structure, and the damping layer is made of rubber-like material filling the gaps between adjacent high-strength alloy layers.

[0009] In the aforementioned precision equipment protection device for resisting detonation waves, the skeleton is made of porous metal material, the filling layer is made of polymer elastic foam material, and the intermediate energy-absorbing buffer layer is made of porous metal material and polymer elastic foam material through nesting or bonding to form an interlayer bond structure.

[0010] In the aforementioned precision equipment protection device for resisting blast waves, the intermediate energy-absorbing buffer layer is provided with a three-dimensional mesh-like reinforcing rib. The reinforcing rib is made of carbon fiber composite material and is integrally formed with the porous metal material.

[0011] In the aforementioned precision equipment protection device for resisting blast waves, the inner precision equipment fixing compartment is made of carbon fiber reinforced composite material, and an adjustable shock-absorbing fixing frame is fixedly connected to the inner wall of the compartment.

[0012] In the aforementioned precision equipment protection device for resisting detonation waves, the shock-absorbing fixing frame includes a nested elastic deformation member and a variable damping device. The elastic deformation member is a metal helical spring and is fixed in contact with the filling layer and the cabin. The variable damping device is a magnetorheological damper and is fixed between the cabin and the filling layer.

[0013] In the aforementioned precision equipment protection device for resisting detonation waves, the inner wall of the inner precision equipment fixed compartment is covered with a sound insulation layer and an electromagnetic shielding layer. The sound insulation layer is made of ceramic fiber material, and the electromagnetic shielding layer is made of copper mesh woven layer.

[0014] In the aforementioned precision equipment protection device for resisting detonation waves, the outermost high-strength alloy layer of the outer impact-resistant structure is a titanium alloy layer, and the damping layer is made of nitrile rubber material with a thickness less than that of the adjacent high-strength alloy layer.

[0015] In the aforementioned precision equipment protection device for resisting detonation waves, the reinforcing ribs of the intermediate energy-absorbing buffer layer are arranged in a cross-shaped structure and run through the entire intermediate energy-absorbing buffer layer. The cross-sectional shape of the reinforcing ribs is an I-shaped or rectangular tubular structure.

[0016] Compared with the prior art, the precision equipment protection device for resisting detonation waves provided by this utility model has the following beneficial effects: 1. This utility model, through the impact resistance of the outer high-strength structure, the energy absorption of the middle inner layer, and the combination of multiple materials, can provide multi-directional protection against the complex propagation of blast waves, effectively improving the protection of precision equipment operation.

[0017] 2. This utility model uses elastic deformation components and dampers, which can dissipate the energy converted into vibration, thereby reducing the impact on internal equipment and further improving the comprehensiveness of protection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Reference numerals: 11. High-strength alloy layer; 12. Damping layer; 21. Filling layer; 22. Frame; 23. Reinforcing rib; 3. Cabin; 41. Elastic deformation component; 42. Variable damping device; 51. Sound insulation layer; 52. Electromagnetic shielding layer. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of the present invention without creative effort are also within the protection scope of the present invention.

[0020] Example: Precision equipment protection device against detonation waves, structural reference. Figure 1 As shown.

[0021] This precision equipment protection device for resisting detonation waves mainly adopts a three-layer protective structure with an outer impact-resistant layer, a middle energy-absorbing layer, and an inner stabilizing layer. It effectively resists detonation waves and provides reliable protection for precision equipment. The following is a further detailed description of this device.

[0022] The device specifically comprises an outer shock-resistant structure, an intermediate energy-absorbing buffer layer, and an inner precision equipment securing chamber, arranged in a sequentially stacked manner. These three layers are tightly integrated to form a unified protective system. The outer shock-resistant structure directly faces the detonation wave, initially dispersing and weakening its impact force, thus reducing the intensity of the detonation wave energy. The intermediate energy-absorbing buffer layer receives the remaining energy from the outer layer, further absorbing and dissipating it, reducing energy transfer to the inner layer. The inner precision equipment securing chamber stably supports the precision equipment and provides vibration damping protection, ensuring stable operation of the equipment under the impact of the detonation wave. This layered protection method effectively handles the energy of the detonation wave at each layer, significantly improving the protection effect for precision equipment.

[0023] Specifically, the outer impact-resistant structure comprises a composite structure formed by alternating layers of at least two high-strength alloy layers 11 and at least one damping layer 12. The high-strength alloy layer 11 can be composed of alternating layers of high-strength titanium alloy and aluminum alloy with good ductility. Titanium alloy has advantages such as high strength, low density, and corrosion resistance, and can maintain structural integrity when subjected to detonation wave impacts; aluminum alloy has good ductility, allowing it to deform to a certain extent without breaking, which helps to disperse impact forces. Of course, the high-strength alloy layer 11 can also be made of other alloy materials with high impact resistance, such as nickel-based alloys. The damping layer 12 uses a rubber-like material, such as nitrile rubber damping sheets, and fills the gaps between adjacent high-strength alloy layers 11. Nitrile rubber has good damping properties, absorbing vibration energy generated by wave reflection and scattering, reducing stress concentration within the structure. The high-strength alloy layer 11 and the damping layer 12 are connected by welding or bonding. Welding ensures a strong connection and guarantees the overall integrity of the structure; bonding can buffer the stress between them to a certain extent and facilitates construction.

[0024] The high-strength alloy layer 11 has a continuous corrugated structure on its surface. This special geometric design utilizes the characteristics of detonation wave propagation. When the detonation wave contacts the outer structure, the corrugated structure guides the propagation direction of the detonation wave, causing it to scatter and reflect, thereby reducing the peak impact pressure in the local area. This design is similar to changing the flow direction and pressure distribution of fluids by altering the shape of an object's surface in fluid mechanics. Moreover, the outermost high-strength alloy layer 11 of the outer impact-resistant structure is a titanium alloy layer. Because titanium alloy has higher strength and hardness, it can better resist the direct impact of detonation waves. The damping layer 12 is made of nitrile rubber and is thinner than the adjacent high-strength alloy layer 11, thus ensuring the damping effect without excessively increasing the weight of the structure.

[0025] Specifically, the intermediate energy-absorbing buffer layer includes a skeleton 22 and a filling layer 21 covering the skeleton 22. The skeleton 22 is made of a porous metal material, such as aluminum foam. Aluminum foam has excellent energy absorption characteristics; its internal pore structure deforms and collapses upon impact, absorbing a large amount of impact energy through plastic deformation. The filling layer 21 is made of a high-molecular elastic foam material, such as polyurethane foam, filling the pores of the porous metal material and the surrounding area of ​​the entire energy-absorbing buffer layer. Polyurethane foam has elastic deformation capabilities, which can further buffer and disperse energy, while preventing debris generated during the deformation of the porous metal material from splashing and causing secondary damage to the inner structure. The intermediate energy-absorbing buffer layer uses a layered structure formed by nesting or bonding the porous metal material and the high-molecular elastic foam material. This combination allows the two to work synergistically and fully utilize their respective advantages.

[0026] The intermediate energy-absorbing buffer layer contains three-dimensional mesh-like reinforcing ribs 23, which are made of carbon fiber composite material and integrally molded with porous metal material. Carbon fiber composite material has high strength and high modulus, enhancing the structural stability of the entire energy-absorbing buffer layer. The reinforcing ribs 23 intersect the entire intermediate energy-absorbing buffer layer in a cross-shaped structure, with an I-shaped or rectangular tubular cross-section. This structural design improves the load-bearing capacity of the reinforcing ribs 23 themselves and more effectively guides the energy diffusion path within the buffer layer, improving energy absorption efficiency. Like the skeleton of the human body, the reinforcing ribs 23 support the entire energy-absorbing buffer layer, preventing it from easily deforming or breaking under impact. Specifically, the inner precision equipment fixing compartment 3 is made of carbon fiber reinforced composite material. Carbon fiber reinforced composite material has the advantages of high stiffness and light weight, providing a stable support environment for precision equipment while reducing the weight of the entire protective device. Adjustable shock-absorbing fixing frames are fixedly connected to the inner wall of the compartment 3. The shock-absorbing fixing frames include nested elastic deformation members 41 and variable damping devices 42. The elastic deformable component 41 is a metal helical spring. Metal helical springs have a high elastic coefficient, enabling them to rapidly absorb some energy in the initial stage of the detonation wave impact, providing a certain degree of buffer displacement. The elastic deformable component 41 is fitted and fixed to the filling layer 21 and the chamber 3, ensuring effective energy transfer and buffering during the impact. The variable damping device 42 is a magnetorheological damper. The magnetorheological damper can adjust the damping force in real time according to the impact intensity, precisely controlling the vibration amplitude of the equipment. The variable damping device 42 is fixed between the chamber 3 and the filling layer 21, enabling it to promptly sense and respond to the impact of the detonation wave, providing optimal vibration reduction for precision equipment.

[0027] The inner wall of the inner precision equipment fixing compartment 3 is fitted with a sound insulation layer 51 and an electromagnetic shielding layer. The sound insulation layer 51 is made of ceramic fiber material, which has excellent heat and sound insulation properties, reducing external noise interference to the precision equipment. The electromagnetic shielding layer is made of copper mesh braiding; copper has excellent conductivity, effectively shielding the electromagnetic pulses generated during detonation and preventing damage to the electronic components of the equipment. These two layers of protection further enhance the protective function of the inner precision equipment fixing compartment for the precision equipment.

[0028] The implementation principle of this embodiment is as follows: This protective device effectively resists the impact of detonation waves on precision equipment through the synergistic effect of an outer impact-resistant structure, a middle energy-absorbing buffer layer, and an inner precision equipment fixing chamber. The multi-layer composite design, corrugated surface, and damping material of the outer impact-resistant structure can initially disperse and weaken the impact force of the detonation wave; the combination of porous metal material, high-molecular elastic foam material, and reinforcing ribs 23 in the middle energy-absorbing buffer layer further absorbs and dissipates the remaining energy; the carbon fiber reinforced composite material chamber 3, adjustable shock-absorbing fixing frame, sound insulation layer 51, and electromagnetic shielding layer of the inner precision equipment fixing chamber provide a stable bearing environment and all-round protection for the precision equipment. This multi-layered, multi-structure design, compared with existing simple protective measures, can more effectively cope with the complex impact of detonation waves, meet the requirements for all-round and high-reliability protection of precision equipment, greatly improve the safety and stability of precision equipment in the detonation wave environment, and has significant practicality and innovation, representing a major improvement over existing protection technologies.

[0029] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A precision equipment protection device for resisting detonation waves, characterized in that, The device includes an outer shock-resistant structure, an intermediate energy-absorbing buffer layer, and an inner precision equipment fixing compartment, which are stacked sequentially. The outer shock-resistant structure is used to disperse and weaken the impact force of the detonation wave. The intermediate energy-absorbing buffer layer is used to absorb and dissipate the remaining impact energy. The inner precision equipment fixing compartment is used to stably support precision equipment and provide vibration reduction protection. The outer shock-resistant structure includes a composite structure formed by alternating stacking of at least two high-strength alloy layers (11) and at least one damping layer (12). The high-strength alloy layer 11 and the damping layer (12) are connected by welding or bonding. The intermediate energy-absorbing buffer layer includes a skeleton (22) and a filling layer (21) covering the skeleton (22). The filling layer (21) is fixed to the high-strength alloy layer (11) and the inner equipment fixing compartment, respectively.

2. The precision equipment protection device for resisting detonation waves according to claim 1, characterized in that, The surface of the high-strength alloy layer (11) is provided with a continuous corrugated structure, and the damping layer (12) is filled in the gap between adjacent high-strength alloy layers (11) with a rubber-like material.

3. The precision equipment protection device for resisting detonation waves according to claim 1, characterized in that, The skeleton (22) is made of porous metal material, the filling layer (21) is made of polymer elastic foam material, and the intermediate energy-absorbing buffer layer is made of porous metal material and polymer elastic foam material through nesting or bonding to form an interlayer bonding structure.

4. The precision equipment protection device for resisting detonation waves according to claim 3, characterized in that, The intermediate energy-absorbing buffer layer is provided with a three-dimensional mesh-like reinforcing rib (23), which is made of carbon fiber composite material and integrally formed with the porous metal material.

5. The precision equipment protection device for resisting detonation waves according to claim 1, characterized in that, The inner precision equipment fixed compartment (3) is made of carbon fiber reinforced composite material, and the inner wall of the compartment (3) is fixedly connected with an adjustable shock-absorbing fixing frame.

6. The precision equipment protection device for resisting detonation waves according to claim 5, characterized in that, The shock-absorbing mounting bracket includes a nested elastic deformation member (41) and a variable damping device (42). The elastic deformation member (41) is a metal helical spring and is fitted and fixed to the filling layer (21) and the cabin (3). The variable damping device (42) is a magnetorheological damper and is fixed between the cabin (3) and the filling layer (21).

7. The precision equipment protection device for resisting detonation waves according to claim 6, characterized in that, The inner wall of the inner precision equipment fixed compartment (3) is covered with a sound insulation layer (51) and an electromagnetic shielding layer (52). The sound insulation layer (51) is made of ceramic fiber material, and the electromagnetic shielding layer (52) is made of copper mesh woven layer.

8. The precision equipment protection device for resisting detonation waves according to claim 1, characterized in that, The outermost high-strength alloy layer (11) of the outer impact-resistant structure is a titanium alloy layer, and the damping layer (12) is made of nitrile rubber and its thickness is less than that of the adjacent high-strength alloy layer (11).

9. The precision equipment protection device for resisting detonation waves according to claim 4, characterized in that, The reinforcing ribs (23) of the intermediate energy-absorbing buffer layer are arranged in a cross-shaped structure and run through the entire intermediate energy-absorbing buffer layer. The cross-sectional shape of the reinforcing ribs (23) is I-shaped or rectangular tubular.

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