TWI691660B - Electromagnetic damping device with flywheel - Google Patents

Abstract

An electromagnetic damping device with a flywheel is suitable for being installed on a structure to be damped and used to dampen the vibration of the structure to be damped in a damping direction, including a rack extending along the damping direction, And a damping unit. The damping unit can move back and forth relative to the rack along the vibration damping direction, and includes a gear that can mesh with the rack and roll along the damping direction relative to the rack, and a transmission for the gear to be disposed at one end A module, and a power generation module and a flywheel provided at the other end of the transmission module, when the gear rotates, the gear drives the transmission module to link the power generation module to rotate to generate electricity, and the flywheel is linked by the power generation module And rotate, and used to provide inertia. By setting the rack and the corresponding gear, the effect of unlimited stroke size can be achieved.

Description

Electromagnetic damping device with flywheel

The invention relates to a damping device, in particular to an electromagnetic damping device with a flywheel.

The damping device is widely used in the vibration control system of civil engineering. Taking the pendulum-type tuned mass damping system used in the Taipei 101 building as an example, its principle is to design a system with a huge mass and when the building generates horizontal vibration, Reverse vibration of the mass, and then use the viscous (liquid flow) damping device to dissipate the vibration energy of the building to reduce the vibration of the building and protect the building from damage caused by the earthquake. The vibration energy is finally waste heat The form dissipates in the atmosphere.

The conventional viscous damping device has a pressure cylinder containing a viscous fluid, and a piston that can be pushed and pulled in the pressure cylinder, and uses the viscous fluid to provide resistance to the movement of the piston to achieve dissipation of vibration The effect of energy, however, the conventional viscous damping device has two disadvantages. First, its stroke is limited by the length of the pressure cylinder. Since the ratio of the general stroke to the size of the pressure cylinder needs to be about 1 to 3~4, therefore, In fact, the stroke is often limited by the length of the pressure cylinder can not be designed to the required value, the second is when the pressure When the length of the cylinder is long or the compression force of the piston is large, buckling is likely to occur, resulting in bending deformation of the pressure cylinder and damage to the damping device.

Therefore, an object of the present invention is to provide an electromagnetic damping device with a flywheel that can improve the above-mentioned problems.

Therefore, the electromagnetic damping device with flywheel of the present invention is suitable for being disposed on a structure to be damped, and used to dampen the vibration of the structure to be damped in a vibration damping direction, including an extension extending along the vibration damping direction Rack, and a damping unit.

The damping unit can move back and forth relative to the rack along the vibration damping direction, and includes a gear that can mesh with the rack and roll along the damping direction relative to the rack, and a transmission for the gear to be disposed at one end A module, and a power generation module and a flywheel provided at the other end of the transmission module, when the gear rotates, the gear drives the transmission module to drive the power generation module to rotate and generate electricity, and the flywheel is linked by the power generation module And rotate, and used to provide inertia.

The effect of the present invention is that by providing the rack and the corresponding gear, the reciprocating movement in the vibration-damping direction can be converted into a rotary movement, and electrical energy is generated by the power generation module, and since the rack can Arbitrarily set according to the required length, the stroke size is not limited. Furthermore, because the relative movement between the rack and the gear is movement and rotation, there is no problem of buckling.

1: Electromagnetic damping device with flywheel

2: Slide rail unit

21: The first abutment

22: The first slide

23: Second abutment

24: second slide

3: mass

31: Set up the rack

4: rack

5: Damping unit

51: Gear

52: Transmission module

521: First drive shaft

522: Variable speed mechanism

523: Second drive shaft

53: Power generation module

54: flywheel

6: Reset unit

61: Spring

62: Steel cable

9: Structure to be damped

91: Floor

92: fixed wall

93: Upper floor slab

94: Isolation layer

95: Basic board

96: foundation

961: Support frame

97: Floor

98: diagonal bracing structure

99: Platform

L: vibration damping direction

531: Motor

532: variable resistor

X: the first direction of vibration reduction

Y: the second direction of vibration reduction

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a first embodiment of an electromagnetic damping device with a flywheel of the present invention applied to a structure to be damped 2 is a schematic diagram of the operation of the first embodiment; FIG. 3 is a schematic circuit diagram of a power generation module of the first embodiment; FIG. 4 is another schematic diagram of the application of the first embodiment; and FIG. 5 It is a schematic view of a second embodiment of the electromagnetic damping device with flywheel of the present invention applied to a structure to be damped; FIG. 6 is a third embodiment of an electromagnetic damping device with flywheel of the present invention applied to a to be damped 7 is a schematic diagram of an operation of the third embodiment; FIG. 8 is a schematic diagram of the third embodiment using a diagonal brace installation method applied to the structure to be damped; and FIG. 9 is the present invention A schematic diagram of a fourth embodiment of an electromagnetic damping device with a flywheel applied to a structure to be damped.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same number.

Referring to FIGS. 1, 2 and 3, a first embodiment of the electromagnetic damping device 1 with a flywheel of the present invention can be applied as an electromagnetic tuned mass damping device with a flywheel, and is suitable for installation in a structure to be damped The body 9 is used to reduce the vibration of the structure 9 to be damped in a damping direction L, and includes a slide rail unit 2, a mass 3, a rack 4, a damping unit 5 and a reset unit 6.

In this embodiment, the structure 9 to be damped is exemplified by a building, and the electromagnetically tuned mass damping device with a flywheel is suitable for a floor 91 installed on a suitable floor of the building.

The slide rail unit 2 includes two first slide rails 22 extending along the vibration reduction direction L.

The mass 3 is movably disposed on the first slide rails 22 along the vibration reduction direction L, and may have a mounting frame 31.

The rack 4 is provided on the floor 91 of the floor and extends along the vibration-damping direction L. In FIG. 1, the vibration-damping direction L is a direction perpendicular to the drawing.

The damping unit 5 is arranged on the mass 3 and can move synchronously with the mass 3 through the setting frame 31. The damping unit 5 can move back and forth relative to the rack 4 along the vibration damping direction L, including a A gear 51 capable of meshing with the rack 4 to reciprocate rolling along the rack 4 along the vibration damping direction L, a transmission module 52 for the gear 51 to be disposed at one end thereof, and a transmission module 52 disposed at the other end of the transmission module 52 A power generation module 53 and a flywheel 54, When the gear 51 rotates, the gear 51 drives the transmission module 52 to rotate the power generation module 53 to generate electricity, and the flywheel 54 is rotated by the power generation module 53 to provide inertia.

It is worth mentioning that, in this embodiment, the mass 3 is provided for the damping unit 5, and the rack 4 is correspondingly provided on the floor 91 of the floor, but the installation positions of the two can also be interchanged, only It is only necessary that the two can move relatively in the vibration-damping direction L.

The transmission module 52 has a first transmission shaft 521 penetrating through the rotation axis of the gear 51, a transmission mechanism 522 disposed on the first transmission shaft 521, and a power transmission module that is interlocked by the transmission mechanism 522 The group 53 and the second transmission shaft 523 provided with the flywheel 54.

The extending direction of the first transmission shaft 521 and the second transmission shaft 523 is preferably perpendicular to the vibration damping direction L.

The transmission mechanism 522 is used to increase the rotation speed of the first transmission shaft 521 and output through the second transmission shaft 523 to drive the power generation module 53 and the flywheel 54, and is preferably implemented using a gear box, and its transmission ratio can be Designed according to actual needs.

The power generation module 53 has a DC motor 531 linked to the transmission module 52 to rotate to generate power and link the flywheel 54, and a variable resistor 532 connected in series to the current path of the motor 531. In FIG. 3, the motor 531 is illustrated by an internal inductance 533, an internal resistance 534, and an electromotive force e.

The flywheel 54 is disposed on the second transmission shaft 523 away from the transmission mechanism 522 At one end, and preferably rotates coaxially with the motor 531.

The resetting unit 6 includes a plurality of springs 61 at both ends of the mass 3 and a corresponding fixed end, which are used to provide constant force for resetting the mass 3 when vibrating. In the first embodiment, the corresponding fixed end may be a plurality of fixed wall surfaces 92 of the structure body 9 to be damped.

In actual use, when the structure 9 to be damped is subjected to an earthquake, it will cause the structure 9 to be damped to vibrate. At this time, since the mass 3 will be in the opposite direction to the structure 9 to be damped Vibration, therefore, the mass 3 will drive the damping unit 5 to generate displacement with the rack 4 in the damping direction L.

As shown in FIG. 2, when the rack 4 and the damping unit 5 are displaced in the damping direction L, the gear 51 will roll on the rack 4 and drive the first transmission shaft 521 around itself The axis rotates, the speed change mechanism 522 is driven by the rotation of the first transmission shaft 521, and the speed of the first transmission shaft 521 is increased to output through the second transmission shaft 523, that is, the second transmission shaft 523 The rotational speed is greater than the rotational speed of the first transmission shaft 521, so that the originally slower rotational speed can be increased to a higher rotational speed that can drive the motor 531 to generate electricity, and then, the second transmission shaft 523 drives the motor 531 to generate electricity due to the flywheel 54 is also sleeved on the second transmission shaft 523 and rotates coaxially with the motor 531. Therefore, the flywheel 54 can provide the inertia of the electromagnetically tuned mass damping device with the flywheel during operation, changing the flywheel Electromagnetically tuned mass damping device frequency. And through the above operation, the electromagnetic tuned mass damping device with flywheel can be improved The structure 9 to be damped is damped in the direction of vibration damping L, and the vibration of the structure 9 to be damped is slowed to improve the safety and comfort of the structure 9 to be damped.

(t)為馬達轉速、τ_gen(t)為扭矩力、k_t為馬達扭矩常數(motor torque constant)、

(t)為電流。 The principle is described as follows: The electromotive force and torque generated by the motor 531 are shown in the following formulas (1) and (2), where e _gen (t) is induced electromotive force (EMF), k _e Is the motor back EMF constant (motor back EMF constant),

(t) is the motor speed, τ _gen (t) is the torque force, k _t is the motor torque constant (motor torque constant),

(t) is the current.

Since k _e and k _t respectively represent the circuit and mechanical characteristics of the motor 531, its value is related to the geometric configuration of the motor 531, the number of coils, and the magnetic characteristics. With current technology, the two constant values can be made almost Consistent, therefore, in the following formula, k _{gen is used} instead of k _e and k _t .

(t)為相對加速度、R_load為該可變電阻532之電阻值、R_gen為該馬達531內部電阻534之值、

(t)為相對速度。 Among them, formulas (3) and (4) are the relationship between the horizontal force provided by the electromagnetic tuned mass damping device with flywheel and the acceleration and speed relative to the structure 9 to be damped, F(t) is the The horizontal force provided by the electromagnetic tuned mass damping device with a flywheel, J _{fw is} the moment of inertia of the flywheel 54, n _{gh is} the gear ratio of the gearbox used by the transmission mechanism 522, r _{pin is} the radius of the gear 51,

(t) is the relative acceleration, R _{load is} the resistance value of the variable resistor 532, R _{gen is} the value of the internal resistance 534 of the motor 531,

(t) is the relative speed.

Corresponding to formula (3) and formula (4), the inertial _bem and the damping coefficient c _em can be obtained as shown in formulas (5) and (6), respectively.

The frequency-dependent formula of the electromagnetic tuned mass damping device with flywheel is shown in formula (7), where ω is the frequency of the electromagnetic tuned mass damping device with flywheel, k is the stiffness coefficient, and m is the mass 3 quality.

By equation (5), (7) can be seen, the tuned mass damper having electromagnetic means of the flywheel can be changed by rotation of the flywheel 54 and the moment of inertia J _fw adjust inertia mass b _em, and thus adjust the frequency [omega], in practice In general, after the production of the tuned mass damping device is completed, the stiffness coefficient k is a fixed value. At this time, if the off-frequency effect occurs on the structure 9 to be damped, the mass m or inertia of the mass 3 needs to be changed Mass be _em to adjust the frequency ω , however, the difficulty of adjusting the mass m of the mass 3 is much greater than the difficulty of adjusting the inertia _bem . This is because once the mass m increases, the mass 3 will be greatly improved in handling and loading It is inconvenient to set up, and enough space needs to be reserved for the setting of the increased mass m , and the moment of inertia J _fw is proportional to the square of the radius of rotation. Therefore, the flywheel 54 does not need to add a great mass or even need to change the mass, only need to change the shape and radius can significantly increase the moment of inertia J _fw, and thus have a great inertia mass b _em, the experimental data of the present embodiment, 1 kg of flywheel inertia mass 54 may be produced b _em equivalent to about 500 The mass 3 of a kilogram has an increase of up to 500 times. Therefore, even if the basic vibration frequency of the structure 9 to be damped changes after completion (for example, decoration, addition/reconstruction or change of use, etc.), it can be Replacing the flywheel 54 with different moments of inertia J _fw (for example, changing the mass or radius, shape, etc.) to adjust the frequency ω is very convenient for its handling facilities.

It can be seen from equation (6) that after the installation of the electromagnetic tuned mass damping device with a flywheel is completed, the damping value provided can still be changed by adjusting the resistance value R _load of the variable resistor 532 .

Referring to FIG. 4, it is another aspect that the electromagnetic damping device 1 with a flywheel is applied to the structure 9 to be damped. The difference between this aspect and the first embodiment described above is: The slide rail unit 2 further includes a first base 21 disposed on the floor 91, the first slide rails 22 disposed on the first base 21, and a ground movable along a first vibration damping direction X A second base 23 disposed on the first slide rails 22 and two second slide rails 24 disposed on the second base 23 and provided for the mass 3 to move along a second vibration-damping direction Y . Wherein, the first vibration damping direction X is perpendicular to the second vibration damping direction Y.

In this mode, four racks 4 and four sets of damping units 5 are used (only two sets of damping units 5 are drawn in FIG. 4 and the other two are located at their symmetrical positions), of which two sets of damping units 5 correspond to the first A slide rail 22 is installed at the relative position of the second base 23 The other two groups corresponding to the second slide rails 24 are installed in the symmetrical position of the mass 3.

In this way, the vibration-damping effect of the structural body 9 to be damped in a horizontal direction can be provided.

Referring to FIGS. 1, 2 and 3, the advantages of this embodiment can be summarized as follows through the above description:

1. By providing the rack 4 and the corresponding gear 51, the reciprocating movement in the damping direction L can be converted into a rotary movement, and electrical energy is generated through the power generation module 53, because the rack 4 can Arbitrarily set according to the required length, the stroke size is not limited, so it can have a larger application range than the conventional technology. Furthermore, because the relative movement between the rack 4 and the gear 51 is movement and rotation, Therefore, the problem of buckling does not occur.

Among them, by providing the power generation module 53, the vibration energy can be converted into usable electrical energy, which is sufficient for safety warning and emergency lighting in buildings.

2. By setting the flywheel 54 to provide inertia, the required frequency can be adjusted by changing the rotational inertia of the flywheel 54. Compared with the conventional technology, once the massive mass 3 is set, it will be difficult to change the applied frequency Since the flywheel 54 of the present invention only needs a small mass to provide a great inertia, it is not only easy to transport and install, it does not require a large installation space, and the basic vibration of the structure 9 to be damped When the frequency changes, it is also convenient to replace and adjust, and can always meet the structure to be damped 9 The current basic vibration frequency improves the problem of Detuning Effect, increases the safety of the structure 9 to be damped and extends the service life.

3. By setting the variable resistor 532 connected in series with the current path of the motor 531, after the installation of the electromagnetic damper device 1 with a flywheel is completed, the resistance value of the variable resistor 532 added can still be adjusted By changing the damping provided, the flexibility of application changes can be increased.

5 is a second embodiment of the electromagnetic damping device 1 with flywheel of the present invention. The second embodiment is similar to the first embodiment. The difference between the second embodiment and the first embodiment is : The resetting unit 6 includes a plurality of steel cables 62 with two ends respectively disposed on the mass 3 and a corresponding fixed end, for constantly providing a force for resetting the mass 3 when vibrating. In the second embodiment, the corresponding fixed end may be an upper floor 93 of the structure 9 to be damped.

In this way, the second embodiment can also achieve the same purposes and effects as the first embodiment described above.

6 and 7 are a third embodiment of the electromagnetic damping device 1 with a flywheel of the present invention, the third embodiment is similar to the first embodiment, the third embodiment and the first embodiment The difference is that in the third embodiment, the structure 9 to be damped is taken as an example of a building with an isolation layer 94, and the electromagnetic damping device 1 with a flywheel is suitable for installation in the large Between a foundation plate 95 and the foundation 96 of the building, it is suitable for erecting a plurality of support frames 961 to provide the supportability of the electromagnetic damping device 1 with a flywheel.

The rack 4 is disposed on the base plate 95, and the damping unit 5 is disposed on the foundation 96, and moves synchronously with the foundation 96 through the support frames 961.

In this way, when the structure 9 to be damped encounters an earthquake and generates vibrations, the foundation plate 95 will be displaced between the foundation 96 due to shaking, so that the rack 4 and the damping unit 5 will also follow A displacement is generated in the vibration damping direction L, and the damping unit 5 is used to provide damping when the gear 51 moves relative to the rack 4, so as to reduce the vibration of the structure 9 to be damped and the relative damping of the base plate 95. The effect of displacement between the foundation 96.

Referring to FIG. 8, it is another application mode of the third embodiment. In this mode, a bracing structure 98 is provided on each floor 97 or a specific floor 97 of the structure 9 to be damped, and A platform 99 provided on the inclined brace structure 98 and corresponding to the electromagnetic damping device 1 with a flywheel.

In each installed floor 97, the rack 4 is installed on the corresponding upper floor slab 93, and the damping unit 5 is installed on the corresponding platform 99. In this way, when the structure to be damped 9 vibrates, the displacement movement between the corresponding upper floor slab 93 and the corresponding platform 99 can be slowed down, thereby reducing the overall vibration of the structure to be damped 9.

In this way, the third embodiment can also achieve the effect of unlimited stroke size as described in the first embodiment, and when applied to the structure 9 to be damped, the same It can achieve the effect of providing additional damping on each floor and reducing the structural vibration response.

9 is a fourth embodiment of the electromagnetic damping device 1 with a flywheel of the present invention. The fourth embodiment is similar to the third embodiment. The difference between the fourth embodiment and the third embodiment lies in The fourth embodiment further includes two first slide rails 22, the mass 3 disposed on the first slide rails 22, and a plurality of springs 61.

The structure 9 to be damped has a plurality of support frames 961 disposed on the foundation 96 and the mass 3. The support frames 961 are used for the rack 4 and the damping unit 5 to be disposed.

The flywheel 54 is disposed between the transmission module 52 and the power generation module 53. Since the power generation module 53 and the flywheel 54 rotate coaxially, changing the installation position of the flywheel 54 does not change its operating characteristics.

Wherein, the springs 61 are disposed on both sides of the mass 3 (both sides along the direction of vertical drawing) and are horizontally disposed (direction of the vertical drawing), and one end of each spring 61 is provided on the mass 3, The other end may be a mounting seat (not shown) extending downward from the base plate 95, so that the spring 61 can expand and contract in the horizontal direction to provide a restoring force in the horizontal direction.

In this way, the fourth embodiment can also achieve the same purposes and effects as the first embodiment described above.

In summary, the electromagnetic damping device with flywheel of the present invention has a large stroke Small unrestricted effect, so it can really achieve the purpose of cost invention.

However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as Within the scope of the invention patent.

1: Electromagnetic damping device with flywheel

2: Slide rail unit

22: The first slide

3: mass

31: Set up the rack

4: rack

5: Damping unit

51: Gear

52: Transmission module

521: First drive shaft

522: Variable speed mechanism

523: Second drive shaft

53: Power generation module

531: Motor

54: flywheel

9: Structure to be damped

91: Floor

Claims (9)

An electromagnetic damping device with a flywheel is suitable for being disposed on a structure to be damped, and used to dampen the vibration of the structure to be damped in a damping direction, including: a tooth rail extending along the damping direction ; And a damping unit, which can move back and forth relative to the rack in the vibration damping direction, including a gear that can mesh with the rack and roll in the damping direction relative to the rack, and a gear for the gear to be disposed in A transmission module at one end, a power generation module provided at the other end of the transmission module, and a flywheel replaceably provided at the other end of the transmission module, the rotational inertia of the flywheel is related to the structure of the structure to be damped Basic vibration frequency, when the gear rotates, the gear drives the transmission module to rotate the power generation module to generate electricity, and the flywheel is rotated by the power generation module to rotate, and is used to provide inertia to match the structure of the structure to be damped Basic vibration frequency; wherein, the power generation module has a motor that is linked to the transmission module to rotate to generate power and link the flywheel, and a variable resistor connected in series to the current path of the motor. The electromagnetic damping device with a flywheel according to claim 1, wherein the transmission module has a first transmission shaft penetrating the rotation axis of the gear, a speed change mechanism provided on the first transmission shaft, and A second transmission shaft that is linked to the speed change mechanism and is provided for the power generation module and the flywheel. The speed change mechanism is used to increase the rotation speed of the first transmission shaft and output the second transmission shaft to drive the power generation module With that flywheel. The electromagnetic damping device with a flywheel according to claim 2, wherein the horse Tat and the flywheel rotate coaxially. The electromagnetic damping device with a flywheel according to claim 2, wherein the extending directions of the first transmission shaft and the second transmission shaft are perpendicular to the vibration damping direction. The electromagnetic damping device with a flywheel according to claim 2, wherein the speed change mechanism is a gear box. The electromagnetic damping device with a flywheel according to claim 1, further comprising a mass movable relative to the structure to be damped in the damping direction, the mass is provided for the rack and the damping unit One is provided, and the other of the rack and the damping unit is suitable for being provided corresponding to the structure to be damped. The electromagnetic damping device with a flywheel according to claim 6, further comprising a slide rail unit extending along the vibration damping direction and provided for the mass to move along the vibration damping direction. The electromagnetic damping device with a flywheel according to claim 6, further comprising a reset unit adapted to be disposed between the mass and a corresponding fixed end, the reset unit constantly provides the reset force of the mass. The electromagnetic damping device with a flywheel according to claim 8, wherein the reset unit includes a plurality of springs provided at both ends of the mass and the corresponding fixed end, respectively.

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