阅读说明：本技术 一种镍钛形状记忆合金减隔振装置 (Nickel-titanium shape memory alloy vibration reduction and isolation device ) 是由 高淑春 李家旺 郑碧霄 宋东风 王秋实 张少骞 于 2021-06-25 设计创作，主要内容包括：一种镍钛形状记忆合金减隔振装置属于减振器技术领域,尤其涉及一种镍钛形状记忆合金减隔振装置。本发明提供一种镍钛形状记忆合金减隔振装置。本发明包括记忆合金阻尼上板和记忆合金阻尼下板,其特征在于记忆合金阻尼上板与记忆合金阻尼下板之间设置有记忆合金中间件。(A nickel-titanium shape memory alloy vibration reduction and isolation device belongs to the technical field of shock absorbers, and particularly relates to a nickel-titanium shape memory alloy vibration reduction and isolation device. The invention provides a nickel-titanium shape memory alloy vibration reduction and isolation device. The invention comprises a memory alloy damping upper plate and a memory alloy damping lower plate, and is characterized in that a memory alloy intermediate piece is arranged between the memory alloy damping upper plate and the memory alloy damping lower plate.)

1. A nickel-titanium shape memory alloy vibration reduction and isolation device comprises a memory alloy damping upper plate and a memory alloy damping lower plate, and is characterized in that a memory alloy intermediate piece is arranged between the memory alloy damping upper plate and the memory alloy damping lower plate.

2. The ni-ti shape memory alloy vibration damping and isolating device according to claim 1, wherein the memory alloy intermediate member is a transverse plate shape memory alloy metal rubber member or an arc shape memory alloy plate member.

3. The ni-ti shape memory alloy vibration damping and isolating device according to claim 1, wherein a central hole is formed in the middle of the upper plate, a central bolt passes through the central hole, the head end of the central bolt is disposed at the lower end of the central hole, and the size of the head end of the central bolt is larger than the diameter of the central hole;

the memory alloy damping upper plate, the memory alloy intermediate piece and the memory alloy damping lower plate are provided with side holes at two sides correspondingly, the side bolts penetrate through the side holes, the head ends of the side bolts are arranged at the upper ends of the side holes of the memory alloy damping upper plate, and the head ends of the side bolts are larger than the aperture of the side holes.

4. The ni-ti shape memory alloy vibration damping and isolating device as defined in claim 2, wherein the middle portion of said curved shape memory alloy plate member is upwardly protruded to abut against the lower end of the head end of the middle bolt.

5. The nickel titanium shape memory alloy vibration reduction and isolation device according to claim 2, wherein a groove is formed in the middle of the upper end of the memory alloy metal rubber part, and the head end of the middle bolt is placed in the groove.

6. The ni-ti shape memory alloy vibration damping and isolating device as claimed in claim 1, wherein the upper end of the middle of the upper plate has a boss extending upward, and the central hole passes through the middle of the boss.

7. The ni-ti shape memory alloy vibration damping and isolating device as claimed in claim 2, wherein the memory alloy metal rubber member is a vulcanized rubber member.

8. The ni-ti shape memory alloy vibration damping and isolating device according to claim 2, wherein the memory alloy metal rubber member is provided with a vertical spring placement hole, the memory alloy spring passes through the spring placement hole, the upper end of the memory alloy spring abuts against the lower end of the memory alloy damping upper plate, and the lower end of the memory alloy spring abuts against the upper end of the memory alloy damping lower plate.

9. The apparatus according to claim 3, wherein a memory alloy spring is disposed on each side of each of the side bolts, and the two memory alloy springs are spaced apart from the side bolts by the same distance.

Technical Field

The invention belongs to the technical field of vibration absorbers, and particularly relates to a nickel-titanium shape memory alloy vibration reduction and isolation device.

Background

In the prior art, the vibration reduction and isolation of equipment mainly realizes low-frequency vibration reduction through passive vibration reduction and active and semi-active vibration reduction technologies, the active and semi-active vibration reduction technologies need external input energy, and the system structure is complex. The traditional passive shock absorber mainly uses a metal spring and a damper which are connected in parallel as a shock absorption unit, the metal spring has strong bearing capacity and is designed and manufactured to meet various rigidity requirements, but the traditional passive shock absorber has the characteristics of large volume, large compression amount and almost no damping. Meanwhile, the elastic and damping integrated shock absorber is designed and manufactured by using materials such as rubber and the like as a main body, and although the damping is large, the bearing capacity is weak and the requirement on the environment is harsh. The existing low-frequency vibration damper has the characteristics of large volume and critical influence on the environment.

Disclosure of Invention

The invention aims at the problems and provides a nickel-titanium shape memory alloy vibration reduction and isolation device.

In order to achieve the purpose, the invention adopts the following technical scheme that the invention comprises a memory alloy damping upper plate and a memory alloy damping lower plate, and is characterized in that a memory alloy intermediate piece is arranged between the memory alloy damping upper plate and the memory alloy damping lower plate.

As a preferable scheme, the memory alloy intermediate piece adopts a transverse plate-shaped memory alloy metal rubber piece or an arc-shaped memory alloy plate piece.

As another preferred scheme, the middle part of the memory alloy damping upper plate is provided with a central hole, a middle bolt passes through the central hole, the head end of the middle bolt is arranged at the lower end of the central hole, and the size of the head end of the middle bolt is larger than the aperture of the central hole;

the memory alloy damping upper plate, the memory alloy intermediate piece and the memory alloy damping lower plate are provided with side holes at two sides correspondingly, the side bolts penetrate through the side holes, the head ends of the side bolts are arranged at the upper ends of the side holes of the memory alloy damping upper plate, and the head ends of the side bolts are larger than the aperture of the side holes.

As another preferred scheme, the middle part of the arc memory alloy plate is upwards protruded and is abutted against the lower end of the head end of the middle bolt.

As another preferred scheme, the middle of the upper end of the memory alloy metal rubber part is provided with a groove, and the head end of the middle bolt is arranged in the groove.

As another preferred scheme, the upper end of the middle part of the memory alloy damping upper plate is provided with an upward extending boss, and the central hole penetrates through the middle part of the boss.

In another preferred scheme, the memory alloy metal rubber part adopts a vulcanized rubber part.

Secondly, a vertical spring placing hole is formed in the memory alloy metal rubber part, the memory alloy spring penetrates through the spring placing hole, the upper end of the memory alloy spring abuts against the lower end of the memory alloy damping upper plate, and the lower end of the memory alloy spring abuts against the upper end of the memory alloy damping lower plate.

In addition, two sides of each side bolt are respectively provided with a memory alloy spring, and the two memory alloy springs are equal to the side bolt between the two memory alloy springs.

The invention has the beneficial effects.

The invention achieves good low-frequency vibration damping effect by matching the memory alloy damping upper and lower plates with the memory alloy intermediate piece.

Drawings

The invention is further described with reference to the following figures and detailed description. The scope of the invention is not limited to the following expressions.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.

In the figure, 1 is a memory alloy damping upper plate, 2 is a memory alloy metal rubber part, 3 is a memory alloy damping lower plate, 4 is a central hole, 5 is a side hole, 6 is a side bolt, 7 is a middle bolt, 8 is an arc memory alloy plate, 9 is a memory alloy spring, 10 is a boss, and 11 is a groove.

Detailed Description

As shown in the figure, the invention comprises a memory alloy damping upper plate and a memory alloy damping lower plate, and a memory alloy intermediate piece is arranged between the memory alloy damping upper plate and the memory alloy damping lower plate.

The memory alloy intermediate piece adopts a transverse plate-shaped memory alloy metal rubber piece (which can be used for vibration reduction and noise reduction of equipment and has damping property and elasticity) or an arc memory alloy plate (which has better elasticity).

The middle part of the memory alloy damping upper plate is provided with a central hole, a middle bolt penetrates through the central hole, the head end of the middle bolt is arranged at the lower end of the central hole, and the size of the head end of the middle bolt is larger than the aperture of the central hole;

the memory alloy damping upper plate, the memory alloy intermediate piece and the memory alloy damping lower plate are provided with side holes at two sides correspondingly, the side bolts penetrate through the side holes, the head ends of the side bolts are arranged at the upper ends of the side holes of the memory alloy damping upper plate, and the head ends of the side bolts are larger than the aperture of the side holes.

The device anchor can be connected through the center hole by using a bolt, and the device anchor is fixed on the ground through the side hole by using a bolt.

The middle part of the arc memory alloy plate is upwards raised and is propped against the lower end of the head end of the middle bolt.

The middle of the upper end of the memory alloy metal rubber part is provided with a groove, and the head end of the middle bolt is arranged in the groove.

The upper end of the middle part of the memory alloy damping upper plate is provided with a boss 10 (which increases the structural strength) extending upwards, and the central hole penetrates through the middle part of the boss.

The memory alloy metal rubber part is a vulcanized rubber part.

The memory alloy metal rubber part is provided with a vertical spring placing hole, the memory alloy spring penetrates through the spring placing hole, the upper end of the memory alloy spring is abutted to the lower end of the upper memory alloy damping plate, and the lower end of the memory alloy spring is abutted to the upper end of the lower memory alloy damping plate. The memory alloy spring is arranged to improve vibration reduction and isolation performance. A large amount of dislocation, goldenrain crystal and complex phase exist in the internal structure of the memory alloy damping plate, the memory alloy spring provides superelasticity, and the memory alloy spring plays a role in damping factors of dislocation, goldenrain crystal, complex phase, superelasticity and vulcanized rubber, so that the effect of vibration reduction and isolation is achieved in a full-frequency-band vibration-level noise environment of mechanical equipment.

And two sides of each side bolt are respectively provided with a memory alloy spring, and the two memory alloy springs are equal to the distance between the two memory alloy springs and the side bolt.

The memory alloy damping upper plate and the memory alloy damping lower plate can be formed by overlapping and multilayer a plurality of single plates, and the single plates can be bonded and fixed through a polyurethane coating. The upper and lower ends of the memory alloy spring can be bonded with the upper and lower plates through polyurethane coatings. The polyurethane coating plays a role in bonding the memory alloy plate, so that the damping performance of the whole shock absorber is further enhanced. The memory alloy shock absorber has excellent damping performance under low-frequency excitation.

The side hole of the arc memory alloy plate is a strip-shaped through hole. And by adopting the strip-shaped through hole, the edge of the through hole is not contacted with the screw rod when the arc-shaped plate is extruded and deformed.

The memory alloy damping plate can be used at the foot margin joint of mechanical equipment, and achieves the effect of vibration reduction and isolation under the noise environment of full-frequency-band vibration level of the mechanical equipment under the combined action of the damping characteristic of the memory alloy damping plate and the superelasticity of the memory alloy spring.

The process flow of the memory alloy damping plate can be as follows: smelting → forging → rolling → material selection → perforation → cutting and shaping → 450-.

The process flow of the arc-shaped memory alloy plate can be as follows: smelting → forging → rolling → material selection → perforation → cutting and shaping → 450-.

The process flow of the memory alloy spring can be as follows: smelting → forging → rolling → drawing → material selection → winding → 450-.

The technological process of the memory alloy metal rubber comprises the following steps: smelting → forging → rolling → drawing → material selection → weaving → 450-.

Smelting: melting the nickel-titanium raw material to form an ingot. Equipment: a vacuum melting furnace. The components: nickel and titanium.

Forging: the ingot was forged to 40mm x 40mm square stock at high temperature (750-. Equipment: forging hammer and resistance furnace.

Rolling: rolling the square stock of 40mm multiplied by 40mm into a plate with required size under the high temperature condition (750 ℃ and 950 ℃). Equipment: a universal rolling mill.

Perforating: and (4) perforating at the reserved position of the plate to prepare for cutting a through hole. Equipment: an electric spark drilling machine.

Cutting: and cutting the shape of the damping plate and the size of the through hole according to the required size. Equipment: and (6) wire cutting.

Shaping the arc plate: fixing by using an arc mould (a steel plate mould with the same radian as the arc plate and extruding and fixing by an upper mould and a lower mould), and heating and shaping in a resistance furnace. Equipment: and (4) a resistance furnace. The process comprises the following steps: 450 ℃ and 700 ℃ (1-2 hours).

And (3) heat treatment: and (3) putting the memory alloy plate in a resistance furnace for heat preservation, and processing the plate performance. Equipment: and (4) a resistance furnace. The process comprises the following steps: 450 ℃ and 700 ℃ (1-2 hours).

Drawing: and (4) gradually thinning the rolled bar stock according to the specified pressing amount to reach the required size. Equipment: horizontal wire drawing machines and drum wire drawing machines.

Winding: the wire with the specified size is uniformly wound on a die under the heating condition (heated by an oxygen-acetylene torch) to manufacture the spring. Equipment: and (4) a resistance furnace.

Shaping a spring: and (4) pulling the wound spring apart and shaping according to the designed thread pitch. Equipment: and (4) a resistance furnace.

Weaving metal rubber: the wire is woven using a braiding machine, similar to a steel wire ball with a bowl. Equipment: a silk knitting machine.

Selecting materials: the thickness of the specified dimensions is selected, for example 2mm, 3 mm.

The working process of the invention is explained below with reference to the drawings.

And in the assembling process, the memory alloy damping upper plate and the equipment anchor which are connected with the central hole are fixed by using bolts, and the vibration reduction and isolation device is installed by connecting expansion bolts with the ground through side holes.

It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.