Impact-resistant energy absorption device

Abstract

The invention discloses an energy absorption device, belongs to the technical field of vibration reduction devices, and particularly relates to an anti-impact energy absorption device.The energy absorption device is composed of an elastic energy absorption structure, a supporting base, a rotating shaft, a loading cushion block and the like, and the elastic energy absorption structure is a combined sandwich structure comprising an upper panel, a lower panel and an elastic corrugated sandwich plate; the elastic energy absorption structure is connected with the base through an end lifting lug or a clamping device, when the elastic energy absorption structure is subjected to a vibration impact load, the elastic energy absorption structure converts impact energy into internal energy through structural deformation, the buffering effect is achieved, all the split structures can deform and absorb energy respectively, overall coordination deformation is achieved through contact supporting between the split structures, and the shock absorption effect is achieved. Buffering pads are arranged among the upper panel, the lower panel and the elastic corrugated sandwich plate in an end lifting lug or clamping device area, all split structures can be staggered in a small range, damping of the elastic energy absorption structure is increased, and vibration is attenuated.

Description

Technical Field

[0001] The invention discloses an energy absorbing device, belongs to the technical field of vibration reduction devices, and specifically relates to an anti-impact energy absorbing device. Background Art

[0002] Various vibration reduction platforms and shock absorbers are often used in the construction, machinery, and transportation industries to absorb vibration and impact forces to achieve a buffering effect, effectively avoiding equipment damage and personal injury caused by mechanical shock or vibration, and protecting the safety of equipment and personnel.

[0003] Commonly used vibration reduction structures include springs, leaf springs, hydraulic or air suspensions, etc.

[0004] Spring and leaf spring vibration reduction structures are relatively heavy, noisy, prone to corrosion and wear, have high vibration frequencies, and are prone to resonance.

[0005] Hydraulic or air suspension has a complex structure, high purchase and maintenance costs, poor load-bearing capacity, and is not suitable for heavy cargo transportation. Summary of the invention

[0006] Purpose of the invention: to provide an anti-impact energy absorbing device to solve the above-mentioned problems.

[0007] Technical solution: An anti-impact energy absorbing device, the energy absorbing device is made of metal or composite materials, and the energy absorbing device comprises: an elastic energy absorbing structure, the elastic energy absorbing structure is composed of an upper panel, a lower panel and an elastic corrugated sandwich plate;

[0008] The upper panel and the lower panel are respectively located on the upper and lower surfaces of the elastic corrugated sandwich plate, and the elastic corrugated sandwich plate supports the upper panel and the lower panel;

[0009] The elastic corrugated sandwich panel adopts a damped oscillation waveform to achieve expansion and contraction deformation, and the upper panel and the lower panel form an envelope structure.

[0010] In a further embodiment, buffer pads are provided between the contact surfaces at both ends of the upper panel and the lower panel and the elastic corrugated sandwich plate.

[0011] In a further embodiment, the upper panel, the lower panel and the elastic corrugated sandwich panel are formed by an autoclave process of a fiber-reinforced thermosetting composite material or by hot-pressing of a fiber-reinforced thermoplastic composite material.

[0012] In a further embodiment, the elastic corrugated sandwich panel adopts a symmetrical or asymmetrical attenuated oscillation waveform structure, and the upper panel and the lower panel may adopt different thicknesses and ply ratios to obtain the required load-bearing capacity and vibration frequency.

[0013] In a further embodiment, the upper panel, the lower panel and the elastic corrugated sandwich panel are connected to the lifting lug or clamping device via a rotating shaft.

[0014] In a further embodiment, both ends of the energy absorbing device are connected to a supporting base via a rotating shaft.

[0015] In a further embodiment, a loading pad is provided on the upper panel of the energy absorbing device.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Fiber-reinforced composite materials are used, with high modulus, high specific strength and high stiffness. The strength and stiffness of each substructure can be designed, giving full play to the advantages of material performance and light weight under the same use environment.

[0018] 2. The upper and lower panels are made of elastic corrugated sandwich panels to form a combined sandwich structure with high overall rigidity, good elasticity and strong bearing capacity.

[0019] 3. The combined sandwich energy-absorbing structure is connected to the base through the end lugs or clamping devices. When subjected to vibration impact loads, the combined sandwich energy-absorbing structure converts the impact energy into internal energy through structural deformation to achieve a buffering effect. Each of the separate structures can deform and absorb energy separately, and achieve overall coordinated deformation through mutual contact support. In the end lug or clamping device area, a buffer pad is set between the upper panel, the lower panel and the elastic corrugated sandwich plate, and each of the separate structures can be displaced in a small range. The damping of the combined sandwich energy-absorbing structure is increased to attenuate vibration.

[0020] 4.Thickness, ply direction, and number of corrugations make the stiffness, deformation, load-bearing capacity, and frequency of the energy-absorbing structure adjustable.

[0021] 5. Split structure design facilitates mass production of single structure with low cost;

[0022] 6. Composite materials are fatigue-resistant and corrosion-resistant, suitable for high-load and corrosive environments, and have a wide range of applications; the split structure design is easy to combine and match, and has a wide range of application scenarios.

[0023] 7. The composite material structure is fatigue-resistant and has a long service life; the split structure is easy to inspect, repair and replace. The use and maintenance costs are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric view of the elastic energy absorbing device of the present invention.

[0025] Figure 2 It is a front view of the elastic energy absorbing device of the present invention.

[0026] Figure 3 It is a diagram of the elastic energy absorption structure of the present invention.

[0027] Figure 4 It is an exploded view of the elastic energy absorbing structure of the present invention.

[0028] Figure 5 Schematic diagram of elastic corrugated energy-absorbing sandwich panels of different configurations according to the present invention.

[0029] Figure 6 It is a schematic diagram of an elastic energy absorbing device with different configurations (Configuration 2) of the present invention.

[0030] Figure numerals: elastic energy absorbing structure 1, supporting base 2, rotating shaft 3, loading pad 4, upper panel 1.1, lower panel 1.2, elastic corrugated sandwich panel 1.3, elastic corrugated sandwich panel (one) 1.3-1, elastic corrugated sandwich panel (two) 1.3-2. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] An anti-impact energy absorption device comprises: an elastic energy absorption structure 1, a support base 2, a rotating shaft 3, and a loading pad 4; wherein the elastic energy absorption structure 1 is a combined sandwich structure comprising 1.1 an upper panel, 1.2 a lower panel, and 1.3 an elastic corrugated sandwich plate.

[0033] Embodiment 1:

[0034] like Figures 1 to 6 As shown, the elastic energy absorbing device is composed of an upper panel 1.1, a lower panel 1.2, and an elastic corrugated sandwich plate 1.3, and a combined sandwich structure, which is an energy absorbing and vibration-resistant structure with high overall rigidity, good elasticity, and strong bearing capacity.

[0035] The upper panel 1.1 and the lower panel 1.2 form an envelope structure as the load-bearing body. The ply thickness and 0°, ply ratio, and spanwise stiffness are designed according to the load-bearing requirements.

[0036] The elastic corrugated sandwich plate 1.3 is used to support the upper panel 1.1 and the lower panel 1.2, improve the overall rigidity of the combined sandwich structure, and has good elasticity and strong bearing capacity.

[0037] The elastic corrugated sandwich plate 1.3 can adopt a decaying oscillation waveform and can be stretched and deformed. When subjected to external impact or vibration, it can absorb the impact force by contraction and expansion to achieve a buffering effect.

[0038] The elastic corrugated sandwich panel 1.3 can be designed with different thicknesses, ply directions, and corrugation quantities, and the elastic modulus can be adjusted to suit different vibration frequencies and load-bearing capacities.

[0039] The elastic corrugated sandwich panel 1.3 usually has a symmetrical structure, but can also have an asymmetrical wave design, so that the sandwich energy absorption mechanism exhibits linear or nonlinear elastic characteristics.

[0040] The upper panel 1.1, the lower panel 1.2, and the elastic corrugated sandwich panel 1.3 can be formed by using a fiber-reinforced thermosetting composite material autoclave process, or by using a fiber-reinforced thermoplastic composite material hot press process. Each separate part can be mass-produced separately to reduce manufacturing costs.

[0041] A buffer pad is provided between the upper panel 1.1, the lower panel 1.2 and the elastic corrugated sandwich panel 1.3 to absorb impact and reduce vibration to improve stability. The selection of a suitable buffer pad needs to consider factors such as its material, hardness and installation position. Its main function is to absorb and disperse impact force and reduce vibration and noise of the energy-absorbing structure.

[0042] The upper panel 1.1, the lower panel 1.2, and the elastic corrugated sandwich panel 1.3 are connected to the end ears or clamping devices through the rotating shaft 3, and a buffer pad is arranged between them, so as to form an elastic energy absorbing structure 1.

[0043] The elastic energy absorbing structure 1 is connected to the supporting base 2 through the rotating shaft 3, the loading pad 4 is configured, and the buffer pad is debugged to match the frequency requirements.

[0044] Working principle: The elastic energy absorbing structure 1 is connected to the base through the end lug or clamping device. When subjected to vibration impact load, the elastic energy absorbing structure 1 converts the impact energy into internal energy through structural deformation to achieve a buffering effect. Each of the split structures can deform and absorb energy separately, and achieve overall coordinated deformation through contact support between each other. In the end lug or clamping device area, a buffer pad is set between the upper panel 1.1, the lower panel 1.2 and the elastic corrugated sandwich plate 1.3, and each of the split structures can be displaced in a small range, so that the damping of the elastic energy absorbing structure 1 is increased and the vibration is attenuated.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An anti-impact energy absorbing device, characterized in that: The energy absorbing device is made of metal or composite material, and comprises: an elastic energy absorbing structure, which is composed of an upper panel, a lower panel and an elastic corrugated sandwich plate; The upper panel and the lower panel are respectively located on the upper and lower surfaces of the elastic corrugated sandwich plate, and the elastic corrugated sandwich plate is used to support the upper panel and the lower panel; The elastic corrugated sandwich panel adopts a damped oscillation waveform to achieve expansion and contraction deformation, and the upper panel and the lower panel form an envelope structure.

2. The anti-impact energy absorbing device according to claim 1, characterized in that: Buffer pads are provided between the contact surfaces at both ends of the upper panel and the lower panel and the elastic corrugated sandwich plate.

3. The anti-impact energy absorbing device according to claim 1, characterized in that: The upper panel, the lower panel and the elastic corrugated sandwich panel are formed by using a fiber-reinforced thermosetting composite material autoclave process or a fiber-reinforced thermoplastic composite material hot-pressing process.

4. The anti-impact energy absorbing device according to claim 1, characterized in that: The elastic corrugated sandwich plate adopts a symmetrical structure or an asymmetrical structure.

5. The anti-impact energy absorbing device according to claim 1, characterized in that: The upper panel, the lower panel and the elastic corrugated sandwich plate are connected to the lifting lug or clamping device through a rotating shaft.

6. The anti-impact energy absorbing device according to claim 1, characterized in that: Both ends of the energy absorbing device are connected to a supporting base via a rotating shaft.

7. The anti-impact energy absorbing device according to claim 1, characterized in that: A loading pad is provided on the upper panel of the energy absorbing device.

8. The anti-impact energy absorbing device according to claim 1, characterized in that: The elastic corrugated sandwich plate adopts a symmetrical structure or an asymmetrical damped oscillation waveform structure, and the upper panel and the lower panel adopt different thicknesses and ply ratios to obtain the required bearing capacity and vibration frequency.

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