CN210769955U - Shape memory alloy vibration isolator - Google Patents
Shape memory alloy vibration isolator Download PDFInfo
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- CN210769955U CN210769955U CN201921722303.9U CN201921722303U CN210769955U CN 210769955 U CN210769955 U CN 210769955U CN 201921722303 U CN201921722303 U CN 201921722303U CN 210769955 U CN210769955 U CN 210769955U
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Abstract
The utility model discloses a shape memory alloy isolator relates to vibration isolation technical field, including the upper junction plate, lower connecting plate and a plurality of shape memory alloy rope, the upper junction plate sets up in connecting plate top down, each shape memory alloy rope all sets up between upper junction plate and lower connecting plate, each shape memory alloy rope is connected with upper junction plate and lower connecting plate, lower connecting plate is used for fixed with the basement, transmit power for upper junction plate and shape memory alloy rope after the vibration control object vibrates, shape memory alloy rope has the hysteresis characteristic, self structure has high rigidity and high damping characteristic, the crooked power consumption through shape memory alloy rope realizes the low frequency vibration isolation. The utility model provides a shape memory alloy isolator had both satisfied the rigidity demand, contained high damping again, did not receive operational environment restriction, simple structure, simple to operate, and stability is high.
Description
Technical Field
The utility model relates to a vibration isolation technical field especially relates to a shape memory alloy isolator.
Background
From high-tech technologies such as national defense, aerospace, information, medical technology and the likeThe technical requirements of precision machining, ultra-precision machining and the like are increased sharply, precision instruments and equipment are extremely sensitive to the vibration influence of a working environment, any small vibration can seriously influence the measurement precision and the machining precision, and the damage of long-term vibration interference to the precision instruments is immeasurable. Therefore, in order to ensure the pursuit of high quality, high reliability and high performance of products and protect precise instruments, effective vibration isolation measures must be taken, the vibration isolation effect is improved, and a good working environment is obtained. The lower the natural frequency of the vibration isolation system is, the better the vibration isolation effect is, and the industry always pursues low frequency or ultralow frequency vibration isolation components and parts. At present, low-frequency vibration isolation is mainly realized by passive vibration isolation and active and semi-active vibration isolation technologies, which require external input energy and have the characteristic of relatively complex system structure. The traditional passive vibration isolator mainly uses a metal spring and a damper which are connected in parallel as a main vibration isolation unit, the metal spring has strong bearing capacity and is designed and manufactured into various rigidity requirements, but the traditional passive vibration isolator has the defects of large volume, large compression amount and almost no damping, and the damper has the defect that the vibration frequency is greater than the natural frequency of a system
When the vibration isolation effect is doubled, the vibration isolation effect is not achieved any more, and the transmission rate of vibration is increased. People use the elastic and damping integrated vibration isolation elements designed and manufactured by materials such as rubber, and the like, although the damping is large, the bearing capacity is weak, and the requirement on the environment is strict.
Therefore, the existing low-frequency vibration isolator mainly uses metal springs or rubber as elastomer units, the metal springs are large in rigidity and strong in bearing capacity, but generally have large volume and almost do not have damping, and the rubber has a certain damping, but is weak in bearing capacity and limited in development space due to the limitation of working environment. Therefore, the vibration isolator which meets the rigidity requirement and contains high damping is designed, and the vibration isolator has a good application prospect.
SUMMERY OF THE UTILITY MODEL
For solving above technical problem, the utility model provides a shape memory alloy isolator had both satisfied the rigidity demand, contained high damping again, did not receive operational environment to restrict, simple structure, simple to operate, stability is high.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a shape memory alloy isolator, including upper junction plate, lower connecting plate and a plurality of shape memory alloy rope, the upper junction plate set up in connecting plate top, each down the shape memory alloy rope all set up in the upper junction plate with down between the connecting plate, each the shape memory alloy rope with the upper junction plate with the connecting plate is connected down, the connecting plate is used for fixing with the basement down.
Preferably, the upper junction plate with the equal level of lower connecting plate sets up, there is the first through-hole that a plurality of levels set up on the upper junction plate, there is the second through-hole that a plurality of levels set up on the connecting plate down, first through-hole with second through-hole one-to-one, one shape memory alloy rope passes one first through-hole and by the both ends that first through-hole stretches out are respectively through one the both ends of second through-hole extend to the inside of second through-hole, the both ends of shape memory alloy rope with connecting plate fixed connection down, shape memory alloy rope with first through-hole with the equal interference fit of second through-hole.
Preferably, the shape memory alloy rope further comprises a plurality of fixing bolts, two counter bores are arranged above each second through hole, one fixing bolt is installed in each counter bore, and the fixing bolts are used for fixedly connecting two ends of the shape memory alloy rope with the lower connecting plate.
Preferably, the first through holes are parallel to each other, the second through holes are parallel to each other, and the first through holes and the second through holes are arranged in parallel.
Preferably, the connecting device further comprises a connecting bolt, a bolt hole is formed in the middle of the lower connecting plate, and the connecting bolt penetrates through the bolt hole to fix the lower connecting plate on the base.
Preferably, the shape memory alloy rope comprises a stainless steel wire bundle, a plurality of nickel-titanium alloy wire layers and a stainless steel wire layer which are sequentially sleeved from inside to outside.
Preferably, the nitinol wire layers are provided in two, and the stainless steel wire bundle comprises seven stainless steel wires.
Preferably, the upper connecting plate and the lower connecting plate are both stainless steel plates.
The utility model discloses for prior art gain following technological effect:
the utility model provides a shape memory alloy vibration isolator, which comprises an upper connecting plate, a lower connecting plate and a plurality of shape memory alloy ropes, wherein the upper connecting plate is arranged above the lower connecting plate, each shape memory alloy rope is arranged between the upper connecting plate and the lower connecting plate, each shape memory alloy rope is connected with the upper connecting plate and the lower connecting plate, the lower connecting plate is used for fixing with a substrate, a vibration control object vibrates and transmits force to the upper connecting plate and the shape memory alloy ropes, the shape memory alloy ropes have hysteretic characteristic, the self structure has high rigidity and high damping characteristic, low-frequency vibration isolation is realized through the bending energy consumption of the shape memory alloy ropes, and the shape memory alloy vibration isolator in the utility model realizes high rigidity and high damping integrated design, conforms to the actual engineering environment better, can be put into use better, has simple structure, convenient installation and small deformation, the stability is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the shape memory alloy vibration isolator provided by the present invention;
fig. 2 is a cross-sectional view of the shape memory alloy rope according to the present invention.
Description of reference numerals: 1. an upper connecting plate; 2. a shape memory alloy cord; 21. stainless steel wire bundles; 22. a nickel titanium alloy wire layer; 23. a stainless steel wire layer; 3. fixing the bolt; 4. bolt holes; 5. a lower connecting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a shape memory alloy isolator had both satisfied the rigidity demand, contained high damping again, did not receive operational environment to restrict, simple structure, simple to operate, stability is high.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the present embodiment provides a shape memory alloy vibration isolator, which includes an upper connection plate 1, a lower connection plate 5, and a plurality of shape memory alloy ropes 2, wherein the upper connection plate 1 is disposed above the lower connection plate 5, each shape memory alloy rope 2 is disposed between the upper connection plate 1 and the lower connection plate 5, each shape memory alloy rope 2 is connected to the upper connection plate 1 and the lower connection plate 5, the lower connection plate 5 is used for fixing with a base, and a vibration control object vibrates to transmit a force to the upper connection plate 1 and the shape memory alloy ropes 2, the shape memory alloy ropes 2 have hysteresis characteristics, and have high rigidity and high damping characteristics, and realize low-frequency vibration isolation by bending energy consumption of the shape memory alloy ropes 2, thus, the shape memory alloy vibration isolator in the present embodiment realizes an integrated design of high rigidity and high damping, and absorbs characteristics of high bearing capacity of the spring vibration isolator and high damping of rubber vibration isolator, accord with actual engineering environment more, do not receive operational environment restriction, can better put into use, and simple structure, simple to operate, the deflection is little, and stability is high.
Specifically, upper junction plate 1 and the equal level setting of lower junction plate 5, the first through-hole that has a plurality of levels to set up on upper junction plate 1, the second through-hole that has a plurality of levels to set up on the lower junction plate 5, first through-hole and second through-hole one-to-one, shape memory alloy rope 2 passes a first through-hole and extends inside the second through-hole through the both ends of a second through-hole respectively by the both ends that first through-hole stretches out, shape memory alloy rope 2's both ends and lower junction plate 5 fixed connection, shape memory alloy rope 2 and the equal interference fit of first through-hole and second through-hole, and then guarantee that there is not relative movement between shape memory alloy rope 2 and upper junction plate 1.
In the embodiment, the first through hole and the second through hole are introduced, and the vibration isolator structure can be adjusted according to the actual working environment by adjusting the shape memory alloy rope 2. Meanwhile, different vibration isolation effects can be achieved by adjusting the number of the shape memory alloy ropes 2.
The shape memory alloy rope fixing device further comprises a plurality of fixing bolts 3, two counter bores are arranged above the second through holes, one fixing bolt 3 is installed in each counter bore, and the fixing bolts 3 are used for fixedly connecting two ends of the shape memory alloy rope 2 with the lower connecting plate 5.
In this embodiment, the plurality of first through holes are parallel to each other, the plurality of second through holes are parallel to each other, and the first through holes and the second through holes are arranged in parallel.
In this embodiment, the upper connection plate 1 and the lower connection plate 5 are rectangular plates, the first through hole extends along the width direction of the upper connection plate 1, and the second through hole extends along the width direction of the lower connection plate 5. Shape memory alloy rope 2, first through-hole and second through-hole all set up to two, and two first through-holes set up respectively in two side edges of upper junction plate 1, and two second through-holes set up respectively in two side edges of lower junction plate 5. The upper connecting plate 1 and the lower connecting plate 5 are both stainless steel plates.
The embodiment also comprises a connecting bolt, a bolt hole 4 is arranged in the middle of the lower connecting plate 5, and the connecting bolt penetrates through the bolt hole 4 to fix the lower connecting plate 5 on the substrate.
As shown in fig. 2, the shape memory alloy rope 2 includes a stainless steel wire bundle 21, a plurality of nitinol wire layers 22 and a stainless steel wire layer 23, which are sequentially sleeved from inside to outside. Specifically, the stainless steel wire bundle 21 is cylindrical, and the nitinol wire layer 22 and the stainless steel wire layer 23 are cylindrical and sleeve-shaped.
In this embodiment, the nitinol wire layers 22 are provided in two, and the stainless steel wire bundle 21 comprises seven stainless steel wires. The shape memory alloy rope 2 is formed by twisting nickel-titanium alloy wires and stainless steel wires, seven stainless steel wires are arranged in the center to form a stainless steel wire bundle 21, two layers of nickel-titanium alloy wires are wrapped around the stainless steel wire bundle 21, and the stainless steel wires are wrapped on the outermost layer and are twisted. Specifically, different vibration isolation effects can be achieved by screwing different numbers of nickel-titanium alloy wires and stainless steel wires.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The shape memory alloy vibration isolator is characterized by comprising an upper connecting plate, a lower connecting plate and a plurality of shape memory alloy ropes, wherein the upper connecting plate is arranged above the lower connecting plate, each shape memory alloy rope is arranged between the upper connecting plate and the lower connecting plate, each shape memory alloy rope is connected with the upper connecting plate and the lower connecting plate, and the lower connecting plate is used for being fixed with a substrate.
2. The shape memory alloy vibration isolator according to claim 1, wherein the upper connecting plate and the lower connecting plate are horizontally arranged, the upper connecting plate is provided with a plurality of horizontally arranged first through holes, the lower connecting plate is provided with a plurality of horizontally arranged second through holes, the first through holes correspond to the second through holes in a one-to-one manner, one shape memory alloy rope passes through one first through hole, two ends of the shape memory alloy rope extending out of the first through hole extend into the interior of the second through hole through two ends of one second through hole respectively, two ends of the shape memory alloy rope are fixedly connected with the lower connecting plate, and the shape memory alloy rope is in interference fit with the first through hole and the second through hole.
3. The shape memory alloy vibration isolator according to claim 2, further comprising a plurality of fixing bolts, wherein two counter bores are arranged above each second through hole, one fixing bolt is installed in each counter bore, and the fixing bolts are used for fixedly connecting two ends of the shape memory alloy rope with the lower connecting plate.
4. The shape memory alloy vibration isolator of claim 2 or 3, wherein the plurality of first through holes are parallel to each other, the plurality of second through holes are parallel to each other, and the first through holes and the second through holes are arranged in parallel.
5. The shape memory alloy vibration isolator of claim 1, further comprising a connecting bolt, wherein a bolt hole is formed in the middle of the lower connecting plate, and the connecting bolt penetrates through the bolt hole to fix the lower connecting plate on the base.
6. The shape memory alloy vibration isolator of claim 1, wherein the shape memory alloy rope comprises a stainless steel wire bundle, a plurality of nickel-titanium alloy wire layers and a stainless steel wire layer which are sleeved in sequence from inside to outside.
7. The shape memory alloy vibration isolator of claim 6 wherein the layers of nitinol wires are provided in two and the stainless steel wire bundle comprises seven stainless steel wires.
8. The shape memory alloy vibration isolator of claim 1, wherein the upper and lower tie plates are stainless steel plates.
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| CN201921722303.9U CN210769955U (en) | 2019-10-15 | 2019-10-15 | Shape memory alloy vibration isolator |
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| CN201921722303.9U CN210769955U (en) | 2019-10-15 | 2019-10-15 | Shape memory alloy vibration isolator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594325A (en) * | 2019-10-15 | 2019-12-20 | 上海大学 | Shape memory alloy vibration isolator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594325A (en) * | 2019-10-15 | 2019-12-20 | 上海大学 | Shape memory alloy vibration isolator |
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