Novel self-resetting energy dissipation supporting device

Abstract

According to the novel self-resetting energy dissipation supporting device, a first steel pipe and a second steel pipe are arranged at the two ends of a supporting cylinder from outside to inside correspondingly, and the first steel pipe and the second steel pipe are connected in a sleeved mode; a first elastic assembly, a second elastic assembly and a magnetorheological fluid cavity are sequentially connected in the supporting cylinder in the direction from the second steel pipe to the first steel pipe, the second elastic assembly is arranged in the first elastic assembly, a partition plate is fixedly connected to the end, close to the second steel pipe, of the first steel pipe, and one end of the first elastic assembly is fixed to the second steel pipe. One end of the second elastic assembly is fixed to the second steel pipe, the other end of the second elastic assembly is movably connected to the first steel pipe, the first steel pipe penetrates through the magnetorheological fluid cavity, one end of the first steel pipe is connected with the second steel pipe, and the other end of the first steel pipe extends out of the supporting cylinder. According to the device, the energy dissipation performance can be effectively improved through the multi-layer energy dissipation and shock absorption device, meanwhile, different energy dissipation structures can cope with different shock strengths, and the multi-stage and layered energy dissipation effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of energy dissipation and vibration reduction of building structures, and in particular to a novel self-resetting energy dissipation support device. Background Art

[0002] At present, in the field of engineering and architectural design, new self-resetting energy-absorbing support systems are receiving more and more attention. When large buildings encounter extreme natural disasters such as earthquakes, it is necessary to ensure the safety of the structure while improving its self-recovery ability. Therefore, the new self-resetting energy-absorbing support system is gradually becoming an important part of modern building structure design with its excellent seismic performance and self-recovery ability. It cleverly combines the two functions of self-resetting and energy dissipation, forming a structural support system that can play an energy-absorbing role in earthquakes and quickly restore functions after earthquakes. When an earthquake occurs, the energy-absorbing elements can effectively absorb and consume the energy input by the earthquake, converting the impact force of the seismic wave into heat energy or other forms of energy dissipation, thereby significantly reducing the destructive power of the earthquake on the main structure.

[0003] However, the existing self-resetting energy-absorbing support system has problems such as a single energy-absorbing structure, the memory alloy is greatly affected by temperature, the starting force is large, and the performance requirements under different vibration intensities cannot be taken into account, which in turn affects the overall system's restrictions on energy-absorbing performance.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art. The device can effectively improve the energy consumption performance of the device by designing a multi-layer energy dissipation and shock absorption device. At the same time, different energy dissipation structures can cope with different vibration intensities to achieve multi-level layered energy consumption. The self-powered design enables the device to work normally in extreme environments. These designs can effectively improve the reliability of the device in earthquakes and protect people’s lives and property safety to the greatest extent.

[0006] The present invention provides a novel self-resetting energy-absorbing support device, comprising a support tube, wherein the two ends of the support tube are respectively provided with a first steel tube and a second steel tube from the outside to the inside, the first steel tube and the second steel tube are sleeved, and a first elastic component, a second elastic component and a magnetorheological fluid chamber are sequentially connected and arranged in the direction from the second steel tube to the first steel tube in the support tube, the second elastic component is arranged in the first elastic component, and a partition is fixedly connected to the end of the first steel tube close to the second steel tube, one end of the first elastic component is fixed to the second steel tube, and the other end is movably connected to the first steel tube, one end of the second elastic component is fixed to the second steel tube, and the other end is movably connected to the first steel tube, after the first steel tube passes through the magnetorheological fluid chamber, one end is connected to the second steel tube, and the other end extends out of the support tube.

[0007] Furthermore, the first elastic component includes a bottom plate, a top plate and a first memory alloy rod, the bottom plate is fixed on the second steel pipe, the top plate is sleeved on the first steel pipe, and the bottom plate and the top plate are connected by the first memory alloy rod.

[0008] Preferably, the diameter of the first steel pipe is slightly larger than the diameter of the second steel pipe, so that the second steel pipe is sleeved in the first steel pipe and can reciprocate in the axial direction in the first steel pipe.

[0009] Furthermore, a piezoelectric material plate and a second spring are provided between the top plate and the partition plate, and the piezoelectric material plate and the second spring are both sleeved on the first steel tube.

[0010] Further, the second elastic component includes a first bearing plane, a second bearing plane, a second memory alloy rod, a first alloy rod and a second alloy rod, the first bearing plane and the second bearing plane are located at two ends of the second elastic component, the first bearing plane is fixedly connected to the second steel pipe, the second bearing plane is sleeved on the second steel pipe, the two ends of the first alloy rod are respectively fixed to the upper ends of the first bearing plane and the second bearing plane, the two ends of the second alloy rod are respectively fixed to the lower ends of the first bearing plane and the second bearing plane, and the upper and lower ends of the second memory alloy rod are respectively fixed to the middle parts of the first alloy rod and the second alloy rod.

[0011] Furthermore, the first alloy rod and the second alloy rod are two identical alloy rods, which are fixedly connected end to end to the upper end and the lower end of the first bearing plane and the second bearing plane, respectively.

[0012] Furthermore, a piezoelectric material plate and a first spring are provided between the second bearing plane and the partition plate, and the piezoelectric material plate and the first spring are both sleeved on the second steel tube.

[0013] Furthermore, the support sleeve comprises an inner sleeve and an outer sleeve, and a friction layer is provided between the outer wall of the inner sleeve and the inner wall of the outer sleeve.

[0014] Furthermore, a thread is provided at the connection between the inner sleeve and the first steel pipe.

[0015] Furthermore, a capacitor is fixed on the inner wall of the first steel pipe.

[0016] Furthermore, magnetorheological fluid is arranged in the magnetorheological fluid chamber, a plurality of damping rods are fixed to the outer wall of the first steel tube located inside the magnetorheological fluid chamber, a plurality of partitions are fixed between the magnetorheological fluid chamber and the inner sleeve, an electromagnetic coil is arranged between adjacent partitions, and the electromagnetic coil is wound on the outer side of the magnetorheological fluid chamber.

[0017] Preferably, a plurality of damping rods are evenly and correspondingly fixed on the upper and lower sides of the outer wall of the first steel tube.

[0018] The present invention has the following beneficial effects:

[0019] (1) The energy dissipation support device of the present invention adopts a combination design of piezoelectric material and capacitor, and stores the energy collected by piezoelectricity in the capacitor, so that the energy dissipation support device of the present invention does not need external energy supply and realizes self-energy supply;

[0020] (2) The self-resetting energy-absorbing support device of the present invention, when the self-resetting energy-absorbing support is not subjected to force, the springs arranged on the first steel tube and the second steel tube make the structure tightly connected and prevent relative movement; when the self-resetting energy-absorbing support device is subjected to reciprocating cyclic load, it can ensure that there is always a group of shape memory alloys under tension; after the reciprocating cyclic load is eliminated, the self-resetting energy-absorbing support device can return to its initial state under the action of the shape memory alloy component;

[0021] (3) The self-resetting energy-absorbing support device of the present invention generates friction by the relative movement of the outer sleeve and the inner sleeve. Under the action of an earthquake, the energy-absorbing component always works along with the movement of the first steel pipe, and can continuously absorb and dissipate earthquake energy.

[0022] (4) The self-resetting energy-absorbing support device of the present invention introduces a rotational inertia damper, that is, the first steel tube moves axially, and the thread on it drives the inner sleeve to rotate. The inner sleeve rotates one circle when the first steel tube advances one pitch, and energy is consumed by friction between the friction layer of the inner and outer tubes, which actually reflects an amplification effect, making the shock absorption effect more obvious;

[0023] (5) The self-resetting energy-absorbing support device of the present invention has a sleeve added on the outermost side so that the process occurring inside is not affected by the outside world, which is more conducive to improving the integrity of the support structure. At the same time, the multi-sleeve structure can consume energy step by step and reduce excessive pressure and wear on a single component. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the novel self-resetting energy-absorbing support device of the present invention.

[0025] Among them: thread-1, magnetorheological fluid-2, friction layer-3, first memory alloy rod-4, second memory alloy rod-5, first alloy rod-6, second alloy rod-7, piezoelectric material plate-8, first steel tube-9, second steel tube-10, outer sleeve-11, inner sleeve-12, damping rod-13, capacitor-14, magnetorheological fluid chamber-15, partition-16, second bearing plane-17, top plate-18, first spring-19, second spring-20, bottom plate-21, first bearing plane-22, electromagnetic coil-23. DETAILED DESCRIPTION

[0026] The novel self-resetting energy-absorbing support device of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] According to the attached Figure 1 As shown in the embodiment of the present invention, the present invention proposes a novel self-resetting energy-absorbing support device, including a thread 1, a magnetorheological fluid 2, a friction layer 3, a first memory alloy rod 4, a second memory alloy rod 5, a first alloy rod 6, a second alloy rod 7, a piezoelectric material plate 8, a first steel tube 9, a second steel tube 10, an outer sleeve 11, an inner sleeve 12, a damping rod 13, a capacitor 14 and a magnetorheological fluid chamber 15. The support tube of the present invention includes an inner sleeve 12 and an outer sleeve 11, a first steel tube 10 is arranged from outside to inside at the left end of the support tube, and a second steel tube 9 is arranged from outside to inside at the right end of the support tube, and the first steel tube 10 and the second steel tube 9 in the support tube are sleeved. The diameter of the first steel pipe 9 is slightly larger than that of the second steel pipe 10, so that it can move around the second steel pipe 10, so that the entire device can reciprocate in the axial direction of the second steel pipe 10. At the same time, there is a thread 1 at the connection between the first steel pipe 9 and the inner sleeve 12. When the first steel pipe 9 moves, it can drive the inner sleeve 12 to rotate. A friction layer 3 is arranged between the outer wall of the inner sleeve 12 and the inner wall of the outer sleeve 11, and the friction layer 3 rubs against the outer sleeve 11 during rotation.

[0028] According to an embodiment of the present invention, a first elastic component, a second elastic component and a magnetorheological fluid chamber 15 are sequentially connected and arranged in the direction from the second steel tube 10 to the first steel tube 9 in the support tube, the second elastic component is arranged in the first elastic component, and a partition 16 is fixedly connected to the end of the first steel tube 9 close to the second steel tube 10, one end of the first elastic component is fixed to the second steel tube 10, and the other end is movably connected to the first steel tube 9, one end of the second elastic component is fixed to the second steel tube 10, and the other end is movably connected to the first steel tube 9, one end of the first steel tube 9 is fixed to the second steel tube 10, and the other end is movably connected to the first steel tube 9, and after passing through the magnetorheological fluid chamber 15, one end of the first steel tube 9 is connected to the second steel tube 10, and the other end extends out of the support tube.

[0029] According to an embodiment of the present invention, the first elastic component includes a bottom plate 21, a top plate 18 and a first memory alloy rod 4, the bottom plate 21 is fixed on the second steel tube 10, the top plate 18 is sleeved on the first steel tube 9, and the bottom plate 21 and the top plate 18 are connected through the first memory alloy rod 4. A piezoelectric material plate 8 and a second spring 20 are arranged between the top plate 18 and the partition plate 16, and the piezoelectric material plate 8 and the second spring 20 are both sleeved on the first steel tube 9.

[0030] According to an embodiment of the present invention, the second elastic component comprises a first bearing plane 22, a second bearing plane 17, a second memory alloy rod 5, a first alloy rod 6 and a second alloy rod 7, wherein the first bearing plane 22 and the second bearing plane 17 are located at two ends of the second elastic component, the first bearing plane 22 is fixedly connected to the second steel tube 10, the second bearing plane 17 is sleeved on the second steel tube 10, the two ends of the first alloy rod 6 are respectively fixed to the upper ends of the first bearing plane 22 and the second bearing plane 17, the two ends of the second alloy rod 7 are respectively fixed to the lower ends of the first bearing plane 22 and the second bearing plane 17, and the upper and lower ends of the second memory alloy rod 5 are respectively fixed to the middle of the first alloy rod 6 and the second alloy rod 7. The first alloy rod 6 and the second alloy rod 7 are both two identical alloy rods, which are respectively fixedly connected end to end to the upper and lower ends of the first bearing plane 22 and the second bearing plane 17. A piezoelectric material plate 8 and a first spring 19 are arranged between the second bearing plane 17 and the partition plate 16, and the piezoelectric material plate 8 and the first spring 19 are both sleeved on the second steel tube 10.

[0031] According to an embodiment of the present invention, a capacitor 14 is fixed on the inner wall of the first steel tube 9, and the capacitor 14 is connected to the piezoelectric material plate 8 through an electric wire. When the first steel tube 9 moves, the current generated by the extrusion of the piezoelectric material plate 8 is stored in the capacitor 14. The capacitor 14 is connected to the electromagnetic coil 23. After the electromagnetic coil 23 is energized, a magnetic field is applied to the magnetorheological fluid 2, which plays a role in changing the viscosity of the magnetorheological fluid 2. The capacitor 14 can play a role in stabilizing the voltage. A plurality of damping rods 13 are fixed on the outer wall of the first steel tube 9 inside the magnetorheological fluid chamber 15, and a plurality of partitions are fixedly arranged between the magnetorheological fluid chamber 15 and the inner sleeve 12. An electromagnetic coil 23 is arranged between adjacent partitions, and the electromagnetic coil 23 is wound on the outside of the magnetorheological fluid chamber 15. After the first steel tube 9 moves and squeezes the piezoelectric material 8, the current is stored in the capacitor 14 on the inner wall of the first steel tube 9. After the electromagnetic coil 23 is energized, the magnetic field force changes the viscosity of the magnetorheological fluid 2 in the magnetorheological fluid chamber 15.

[0032] According to an embodiment of the present invention, a magnetorheological fluid 2 is disposed in the magnetorheological fluid chamber 15, and a plurality of damping rods 13 are fixed to the outer wall of the first steel tube 9 located inside the magnetorheological fluid chamber 15, and the damping rods 13 are fixed to the upper and lower sides of the outer wall of the first steel tube 9, such as Figure 1 As shown, three groups of damping rods 13 are evenly fixed on the upper and lower sides. The magnetorheological fluid chamber 15 is connected to the inner sleeve 12 and remains relatively still. When the first steel tube 9 moves, the damping rods 13 move in the magnetorheological fluid 2 in the magnetorheological fluid chamber 15.

[0033] According to the embodiment of the present invention, when the supporting device is under tension, the left end of the first steel tube 9 contacts the right ceramic piezoelectric material plate 8 to stretch the first memory alloy rod 4. When the supporting device is under compression, the left end of the first steel tube 9 contacts the left piezoelectric material plate 8 to stretch the second memory alloy rod 5.

[0034] According to an embodiment of the present invention, the working principle of the self-resetting energy-absorbing support device of the present invention is:

[0035] refer to Figure 1 As shown, when the energy dissipation support device of the present invention is pulled, the first steel tube 9 moves axially to the right, and the partition plate 16 at its left end moves to the right, squeezing the piezoelectric material plate 8 on the right side, and at the same time driving the top plate 18 to move to the right, so that the distance between the bottom plate 21 fixed on the second steel tube 10 and the top plate 18 increases, causing the first memory alloy rod 4 to stretch and deform, thereby achieving the effect of energy dissipation.

[0036] When the energy-absorbing support device is under pressure, the first steel tube 9 moves axially to the left, and the partition 16 at its left end moves to the left, squeezing the piezoelectric material plate 8 on the left, while driving the second bearing plane 17 to move to the left. The folding device composed of the second elastic component is activated, so that the distance between the first bearing plane 22 fixed on the second steel tube 10 and the second bearing plane 17 is shortened, causing the second memory alloy rod 5 to stretch and deform, thereby achieving the effect of energy absorption.

[0037] When the first steel tube 9 reciprocates axially, the damping rod 13 fixed thereon reciprocates in the magnetorheological fluid 2 of the magnetorheological fluid chamber 15. At the same time, the partition 16 squeezes the piezoelectric material plate 8 to generate electrical energy and stores it in the capacitor 14. The capacitor 14 supplies power to the magnetorheological fluid 2 to increase its damping, thereby achieving an energy consumption effect.

[0038] When the first steel tube 9 reciprocates axially, the inner sleeve 12 rotates through the thread 1 on the first steel tube 9, and rubs against the friction layer 3 on the inner wall of the fixed outer sleeve 11, which plays a role of friction energy consumption. At the same time, the inner sleeve 12 and the damping rod 13 themselves have a large mass and can play the role of inertia.

[0039] The self-resetting energy-dissipating support device of the present invention uses three energy-dissipating methods: memory alloy, friction, and magnetorheological fluid. It can fully dissipate the energy caused by the shaking of structures such as buildings during earthquakes, and multiple energy-dissipating devices ensure the reliability of the device and effectively disperse the energy. At the same time, through innovative structural design, the memory alloy rod can be in a stretched state regardless of whether the device is under tension or compression, thereby avoiding the problem of the memory alloy rod being instability under compression and better exerting its energy-dissipating and self-resetting characteristics.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

Claims

1. A new type of self-resetting energy-absorbing support device, characterized in that: The invention comprises a support tube, wherein two ends of the support tube are respectively provided with a first steel tube (9) and a second steel tube (10) from the outside to the inside, the first steel tube (9) and the second steel tube (10) are sleeved together, and a first elastic component, a second elastic component and a magnetorheological fluid chamber (15) are sequentially connected and arranged in the support tube from the second steel tube (10) to the first steel tube (9), the second elastic component is arranged in the first elastic component, A partition plate (16) is fixedly connected to the end of the first steel tube (9) close to the second steel tube (10); one end of the first elastic component is fixed to the second steel tube (10) and the other end is movably connected to the first steel tube (9); one end of the second elastic component is fixed to the second steel tube (10) and the other end is movably connected to the first steel tube (9); after the first steel tube (9) passes through the magnetorheological fluid chamber (15), one end is connected to the second steel tube (10) and the other end extends out of the support tube.

2. The new self-resetting energy-absorbing support device according to claim 1 is characterized in that: The first elastic component comprises a bottom plate (21), a top plate (18) and a first memory alloy rod (4); the bottom plate (21) is fixed on the second steel pipe (10); the top plate (18) is sleeved on the first steel pipe (9); and the bottom plate (21) and the top plate (18) are connected via the first memory alloy rod (4).

3. The new self-resetting energy-absorbing support device according to claim 2 is characterized in that: A piezoelectric material plate (8) and a second spring (20) are arranged between the top plate (18) and the partition plate (16); the piezoelectric material plate (8) and the second spring (20) are both sleeved on the first steel pipe (9).

4. The new self-resetting energy-absorbing support device according to claim 1 is characterized in that: The second elastic component comprises a first bearing plane (22), a second bearing plane (17), a second memory alloy rod (5), a first alloy rod (6) and a second alloy rod (7); the first bearing plane (22) and the second bearing plane (17) are located at two ends of the second elastic component; the first bearing plane (22) is fixedly connected to the second steel pipe (10); the second bearing plane (17) is sleeved on the second steel pipe (10); the two ends of the first alloy rod (6) are respectively fixed to the upper ends of the first bearing plane (22) and the second bearing plane (17); the two ends of the second alloy rod (7) are respectively fixed to the lower ends of the first bearing plane (22) and the second bearing plane (17); the upper and lower ends of the second memory alloy rod (5) are respectively fixed to the middle parts of the first alloy rod (6) and the second alloy rod (7).

5. The new self-resetting energy-absorbing support device according to claim 4 is characterized in that: The first alloy rod (6) and the second alloy rod (7) are both two identical alloy rods, which are fixedly connected end to end to the upper end and the lower end of the first bearing plane (22) and the second bearing plane (17).

6. The new self-resetting energy-absorbing support device according to claim 4 is characterized in that: A piezoelectric material plate (8) and a first spring (19) are arranged between the second bearing plane (17) and the partition (16); the piezoelectric material plate (8) and the first spring (19) are both sleeved on the second steel tube (10).

7. The new self-resetting energy-absorbing support device according to claim 1 is characterized in that: The support sleeve comprises an inner sleeve (12) and an outer sleeve (11), and a friction layer (3) is provided between the outer wall of the inner sleeve (12) and the inner wall of the outer sleeve (11).

8. The new self-resetting energy-absorbing support device according to claim 7 is characterized in that: A thread (1) is provided at the connection between the inner sleeve (12) and the first steel pipe (9).

9. The new self-resetting energy-absorbing support device according to claim 1 is characterized in that: A capacitor (14) is fixed on the inner wall of the first steel tube (9).

10. The novel self-resetting energy-absorbing support device according to claim 1 is characterized in that: The magnetorheological fluid chamber (15) contains a magnetorheological fluid (2), and a plurality of damping rods (13) are fixed to the outer wall of a first steel tube (9) located inside the magnetorheological fluid chamber (15). A plurality of partitions are fixedly arranged between the magnetorheological fluid chamber (15) and the inner sleeve (12), and an electromagnetic coil (23) is arranged between adjacent partitions. The electromagnetic coil (23) is wound around the outside of the magnetorheological fluid chamber (15).

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