阅读说明：本技术 一种记忆合金阻尼器 (Memory alloy damper ) 是由 谢发祥 蔡定鹏 高翔 于 2019-09-27 设计创作，主要内容包括：本发明公布了一种记忆合金阻尼器,包括记忆合金弹簧组件,外壳,限位条,电池,导向杆,隔板,位移计,电路；记忆合金弹簧组件包括记忆合金弹簧和拉杆,记忆合金组件与隔板通过螺栓连接,限位条与外壳通过螺栓连接,位移计通过强磁铁固定在外壳的内壁,当导向杆由于拉索的振动而左右移动时,会带动一侧隔板移动,从而带动记忆合金弹簧拉伸,当位移计检测到一定程度的位移时,电流将通过记忆合金弹簧,使其受热而产生较大的回复应力,减小拉索振幅,当拉索振动减缓下来时,电路将会断开。本发明可有效控制拉索的振动,工作方式高效节能,即降低了控制振动的成本,又能有效提高结构的安全性。(The invention discloses a memory alloy damper, which comprises a memory alloy spring assembly, a shell, a limiting strip, a battery, a guide rod, a partition plate, a displacement meter and a circuit, wherein the shell is provided with a plurality of limiting strips; memory alloy spring assembly includes memory alloy spring and pull rod, memory alloy assembly passes through bolted connection with the baffle, spacing and shell pass through bolted connection, the displacement meter passes through the strong magnet and fixes the inner wall at the shell, when the guide bar removes about because the vibration of cable, can drive one side baffle and remove, thereby it is tensile to drive memory alloy spring, when the displacement meter detects the displacement of certain degree, the electric current will pass through memory alloy spring, make it be heated and produce great answer stress, reduce the cable amplitude, when the cable vibration slows down, the circuit will break off. The invention can effectively control the vibration of the inhaul cable, has high-efficiency and energy-saving working mode, reduces the cost of controlling the vibration and can effectively improve the safety of the structure.)

1. A memory alloy damper is characterized in that: the hollow cylindrical shell comprises a hollow cylindrical shell (1), wherein a left partition plate (10) and a right partition plate (11) are arranged in the shell (1), an inner cavity is formed between the left partition plate (10) and the right partition plate (11), a large head is arranged in the inner cavity, and a guide rod (12) for connecting the large head is arranged through one end of the shell (1) and the right partition plate (11); the upper part and the lower part of the big head are respectively provided with a limiting strip (15), a memory alloy spring (7) is arranged in the limiting strip (15), two ends of the memory alloy spring (7) are respectively provided with a pull rod (6), the pull rod (6) penetrates through the left partition plate (10) or the right partition plate (11), pull rod bolts (9) are installed on the pull rod (6) outside the left partition plate (10) and the right partition plate (11), the limiting strip (15) is provided with two threaded holes, the two threaded holes are respectively located at positions close to the left partition plate (10) and the right partition plate (11), and limiting strip bolts (8) are installed in the threaded holes; be equipped with battery cavity (17) on shell (1), be equipped with battery (4) in, be equipped with two circuit lines (5) on battery (4), left baffle (10) and right baffle (11) are passed respectively in two circuit lines (5), it is fixed between left side baffle (10) and shell (1) one end to be equipped with left displacement meter (2), and right displacement meter (3) are fixed to be equipped with between right baffle (11) and shell (1) the other end, a circuit line (5) respectively is connected in left displacement meter (2) and right displacement meter (3).

2. A memory alloy damper as claimed in claim 1, wherein: gaps are reserved between the two ends of the big end and the left clapboard (10) and between the two ends of the big end and the right clapboard (11).

3. A memory alloy damper as claimed in claim 1, wherein: all install strong magnet (16) on left side displacement meter (2) and right side displacement meter (3), strong magnet (16) adsorbable in shell (1) inner wall.

4. A memory alloy damper as claimed in claim 1, wherein: a left control switch (19) is arranged on the circuit line (5) which penetrates through the left partition plate (10), a right control switch (18) is arranged on the circuit line (5) which penetrates through the right partition plate (11), and the left control switch (19) and the right control switch (18) are both positioned in the inner cavity.

5. A memory alloy damper as claimed in claim 1, wherein: and a hole is formed in the position, corresponding to the threaded hole, of the shell (1), and the pull rod bolt (9) can penetrate through the hole and be screwed into the threaded hole.

Technical Field

The invention provides a memory alloy damper, belonging to the structural vibration control range.

Background

Vibration control in the civil engineering field is generally classified into active control and passive control according to the presence or absence of external energy input, and semi-active control and hybrid control formed by combining the two control modes. The commonly used active control methods are: active tuned mass dampers, active cable technology, pulse control, etc. The passive control mode mainly comprises the following steps: base isolation control, metal yield dampers, friction dampers, vibration absorbers and the like.

The passive control mode is that damping energy dissipation equipment is installed at a special position of the structure, deformation and movement of the structure under the action of external force are inhibited, the passive control mode has the characteristics of simple structure, no need of external energy, long service life, convenient maintenance, low manufacturing cost and the like, and the passive control mode is widely applied to structural engineering, such as a viscous damper and a metal yield damper. The metal yielding damper has the problems of plastic deformation caused by aging and fatigue of metal materials, and is not beneficial to the long-term operation of the damper.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the memory alloy damper which is convenient to install, simple, durable and excellent in performance and is used for reducing the deformation vibration response and range of a bridge inhaul cable under the action of dynamic load.

In order to achieve the purpose, the invention adopts the following technical scheme:

a memory alloy damper comprises a hollow columnar shell, wherein a left partition plate and a right partition plate are arranged in the shell, an inner cavity is formed between the left partition plate and the right partition plate, a big head is arranged in the inner cavity, and a guide rod for connecting the big head is arranged through one end of the shell and the right partition plate; the upper part and the lower part of the big head are respectively provided with a limiting strip, a memory alloy spring is arranged in the limiting strip, two ends of the memory alloy spring are respectively provided with a pull rod, the pull rods penetrate through the left partition plate or the right partition plate, pull rod bolts are arranged on the pull rods positioned outside the left partition plate and the right partition plate, the limiting strip is provided with two threaded holes, the two threaded holes are respectively positioned at positions close to the left partition plate and the right partition plate, and the limiting strip bolts are arranged in the threaded holes; be equipped with the battery chamber on the shell, be equipped with the battery in, be equipped with two circuit lines on the battery, two circuit lines pass left baffle and right baffle respectively, fixed being equipped with the left displacement meter between left side baffle and the shell one end, fixed being equipped with the right displacement meter between the right baffle and the shell other end, a circuit line is respectively connected to left side displacement meter and right displacement meter.

As a further preferable scheme, gaps are reserved between the two ends of the large head and the left clapboard and between the two ends of the large head and the right clapboard respectively.

As a further preferable scheme, strong magnets are arranged on the left displacement meter and the right displacement meter, and the strong magnets can be adsorbed on the inner wall of the shell.

As a further preferred scheme, a left control switch is arranged on a circuit line passing through the left partition plate, a right control switch is arranged on a circuit line passing through the right partition plate, and the left control switch and the right control switch are both positioned in the inner cavity.

As a further preferable scheme, a hole is formed in the position, corresponding to the threaded hole, of the shell, and the pull rod bolt can penetrate through the hole and be screwed into the threaded hole.

The invention can not cause the leakage problem of the oil damper, and the damper has longer service life due to the superelasticity, corrosion resistance, shape memory and fatigue resistance of the memory alloy, only needs to replace the battery, and is simple to operate. And the external power supply is not needed, the rechargeable battery can be recycled, the energy is saved, the environment is protected, the cost of the control system is reduced, and the safety of the structure is effectively improved. The damper is simple in structure, and most of the damper can be assembled, so that the large-scale production is facilitated; the amplitude of the structure can be reduced, the structure is safer, the damping effect can be adjusted according to needs, the number of the memory alloy springs is not uniform, the number of the springs can be increased according to needs, and the damping effect is linearly increased along with the number of the springs. Particularly, for the vibration direction without main vibration direction, two dampers can be arranged to be vertically arranged and work in cooperation, so that certain damping effect can be ensured in each direction.

Drawings

FIG. 1 is an isometric cutaway view of a structure;

FIG. 2 is a schematic view of the connection of a memory alloy spring assembly;

FIG. 3 is a schematic view of the installation of the stop strip;

FIG. 4 is a schematic circuit diagram;

FIG. 5 is a schematic view of the displacement gauge mounting;

in the figure: 1. the device comprises a shell, 2, a left displacement meter, 3, a right displacement meter, 4, a battery, 5, a circuit line, 6, a pull rod, 7, a memory alloy spring, 8, a limit strip bolt, 9, a pull rod bolt, 10, a left partition plate, 11, a right partition plate, 12, a guide rod, 13, a partition plate circuit hole, 14, a partition plate positioning hole, 15, a limit strip, 16, a strong magnet, 17, a battery cavity, 18, a right control switch, 19 and a left control switch.

Detailed Description

Control systems for suppressing structural vibrations in accordance with embodiments of the present invention are shown in fig. 1-5.

The damper consists of a memory alloy spring assembly, a shell 1, a limiting strip 15, a battery 4, a guide rod 12, a left partition plate 10, a right partition plate 11, a left displacement meter 2, a right displacement meter 3 and connecting parts.

The memory alloy spring assembly comprises a memory alloy spring 7 and a pull rod 6; the pull rod 6 is fixed on the left clapboard 10 and the right clapboard 11 by using a pull rod bolt 9; the left clapboard 10 and the right clapboard 11 are provided with clapboard positioning holes 14 for positioning the pull rod 6; fixing the left displacement meter 2 and the right displacement meter 3 on the inner wall of the shell 1 by using a strong magnet 16; the left displacement meter 2 and the right displacement meter 3 can monitor the displacement of the left partition plate 10 and the right partition plate 11 respectively; the two clapboards are provided with clapboard circuit holes 13 for passing circuit lines to connect the displacement meter and the circuit; the limiting strip 15 is used for placing the memory alloy spring 7 and the pull rod 6 and is fixedly connected with the shell 1 through a bolt 8; the battery 4 is fixed through a slot in the battery cavity 17; the battery cavity 17 is connected with the shell 1 by welding; the shell 1 is provided with two circuit holes for passing through a circuit; in order to accurately place the left partition board 10 and the right partition board 11, corresponding scales are arranged on the inner wall of the shell 1 for positioning; the big end of the guide rod 12 is positioned between the left partition plate 10 and the right partition plate 11 of the shell 1, the rod diameter can be suddenly reduced when the bridge inhaul cable is close to the partition plate on one side, the bridge inhaul cable penetrates through the guide holes in the partition plates and is positioned, when the guide rod moves left or right due to vibration of a certain amplitude, the big end of the guide rod drives the left partition plate 10 or the right partition plate 11 and then drives the memory alloy spring 7 and the pull rod 6 to move, the partition plate connected with the other end of the pull rod 6 is limited to further move due to the existence of the limiting strip 15, so that the memory alloy spring 7 is stretched, the left displacement meter 2 or the right displacement meter 3 detects large negative displacement or positive displacement, the right control switch 18 and the left control switch 19 can be kept open, a circuit is switched on, the memory alloy spring 7 is heated to generate large restoring stress, and the amplitude of the inhaul cable.

During the use, including installation and work power consumption, at first in the urceolus according to arranging left baffle 10 in proper order, spacing 15, memory alloy spring 7, circuit line 5, guide bar 12, right baffle 11 in order in shell 1, after the definite position, fix spacing 15, memory alloy spring 7 subassembly with spacing bolt 8 for shell 1 and spacing 15, pull rod 6 link to each other with respective baffle is firm, and accomplish that the baffle has certain constraint effect to the guide bar. A left displacement meter 2 or a right displacement meter 3 is arranged in the housing 1 and connected to the circuit, as shown in fig. 5. Then the battery and the battery cavity are welded on the shell, and the two ends of the outer cylinder are welded and sealed by the circular outer wall.

For the shell 1, firstly, the left partition plate 10 is placed at a corresponding scale, then the limiting strip 15 is placed, the limiting strip is screwed and fixed on the shell 1 through the limiting strip bolt 8, the memory alloy spring assembly is placed above the limiting strip 15, and then the circuit line 5, the right control switch 18 and the left control switch 19 are placed. Then the big end of the guide rod 12 is placed in the cavity between the two clapboards, so that the left clapboard 10 or the right clapboard 11 can restrain the guide rod, the right clapboard 11 is placed at the corresponding scale, the memory alloy spring component is fixed by the limit strip bolt 8, then the strong magnet 16 is arranged at the corresponding position of the inner wall of the shell 1, then the left displacement meter 2 or the right displacement meter 3 is fixed, and as shown in figure 5, the left displacement meter 2 or the right displacement meter 3 is connected into a circuit. And then the battery 4 is arranged in the corresponding card slot, a circuit is accessed, then the battery cavity 17 is welded at the corresponding position of the shell 1, the two ends of the cylinder body of the shell 1 are welded and sealed by metal plates, and the installation is finished, as shown in figure 4. To facilitate viewing of the respective locations of the structural members, fig. 1, an isometric cutaway view of the structure, is provided.

When the guide rod 12 moves leftwards due to the vibration of the bridge inhaul cable, the guide rod 12 can prop against the left partition plate 10 to drive the memory alloy spring assembly to move leftwards, so that the pull rod on the other side can drive the right partition plate 11 to move leftwards, but due to the existence of the limiting strip 15, the right partition plate 11 stops moving after being contacted with the limiting strip 15, the guide rod 12 continues to move leftwards to drive the memory alloy spring 7 to stretch, at the moment, the position of the left partition plate 10 deviates leftwards, the left displacement meter 2 detects negative displacement, the left control switch 19 is in an open state, the position of the right partition plate 2 slightly leftwards, the displacement meter detects small positive displacement, the right control switch 18 is in an open state, at the moment, a circuit is smooth, current passes through the memory alloy spring, so that the memory alloy spring is heated to generate return stress, the memory alloy.

When the guide rod moves rightwards due to the vibration of the bridge inhaul cable, the guide rod abuts against the right partition plate 11 to drive the memory alloy spring assembly to move rightwards, so that the pull rod on the other side drives the left partition plate 10 to move rightwards, but due to the existence of the limiting strip 15, the left partition plate 10 stops moving after being contacted with the limiting strip 15, the guide rod 12 continues to move rightwards to drive the memory alloy spring to stretch, at the moment, the position of the right partition plate 11 deviates rightwards, the right displacement meter 3 detects negative displacement, the right control switch 18 is in an open state, the position of the left partition plate 10 slightly moves rightwards, the left displacement meter 2 detects small positive displacement, the left control switch 19 is in an open state, so that the two switches are in an open state, the circuit is smooth, current passes through the memory alloy spring 7, the memory alloy spring is heated to generate return, and the amplitude of the stay cable is reduced.

Here, when the left displacement meter 2 or the right displacement meter 3 detects a positive displacement or a large negative displacement, the right control switch 18 and the left control switch 19 are in an open state, the circuit is kept smooth, if the left displacement meter 2 or the right displacement meter 3 detects only a small negative displacement, the amplitude of the bridge cable is considered to be small at the moment, and the effect of the damper is not exerted, so that the electric quantity of the battery 4 can be saved, and the hidden danger that the memory alloy spring is overheated due to long-term electrification to burn out components and circuits can be avoided.

Particularly, for the inhaul cable without the main vibration direction, two inhaul cables can be simultaneously installed during installation of the damper, the shafts of the guide rods of the two installed dampers are perpendicular to each other, the two inhaul cables can effectively reduce vibration and consume energy when the two inhaul cables work in a cooperative mode, and the single working principle is the same.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.