TWI542800B - Electromagnetic frictional damping module - Google Patents

Description

Electromagnetic friction damping module

The invention relates to a damping module, in particular to an electromagnetic friction damping module having an electromagnet group for generating an adjustable magnetic attraction. The electromagnetic friction damping module of the invention can be installed on the structure body, and the frictional force generated between the electromagnetic friction damping module and the structure body is used to reduce the swinging amplitude of the structure body during the vibration process of the structure body, and The amount of friction can be adjusted indirectly by selectively adjusting the magnetic attraction of the electromagnet group.

In recent years, earthquakes in various parts of the world have caused the collapse of various buildings, such as houses and bridges, and the damage of communication equipment. This has not only caused heavy casualties, but also seriously affected the progress of rescue and disaster victims' reconstruction of their homes. Therefore, various types of vibration isolation and damping structures used for energy dissipation in construction and equipment are produced.

Taiwan Patent No. 201305462 discloses a conventional adjustable damping isolation system comprising a lower support portion, an upper support portion, an isolation unit, a plurality of side plates and a plurality of damping elements. The lower support portion is typically in contact with a base surface, and a carrier is typically disposed on the upper support portion. The vibration isolation unit is disposed between the lower support portion and the upper support portion, and the vibration isolation unit has a plurality of support rollers and an intermediate plate. The side plates face the intermediate plate, and the damping elements are respectively disposed on the intermediate plate and the side plates, and are in contact with each other. When the lower support is encountered by the base When the seismic shock is transmitted, the support rollers are rolled between the lower support portion and the upper support portion, and the damping members disposed on the intermediate plate and the damping members disposed on the side plates are in contact with each other. In order to avoid the excessive acceleration and displacement reaction of the supporting rollers during the vibration process, the shaking degree of the upper supporting portion and the bearing above the upper supporting portion is slowed down, thereby achieving the effect of vibration isolation.

However, the conventional adjustable damping isolation system has the disadvantage that the frictional forces of the damping elements cannot be adjusted to each other. If the friction between the damping elements is too large, the supporting rollers cannot roll between the lower supporting portion and the upper supporting portion, so that the vibration energy will directly pass through the lower supporting portion and the supporting rollers. And the upper support portion is transmitted to the carrier, and the vibration amplitude of the carrier is excessively large and there is a risk of damage. Conversely, if the frictional force between the damping elements is too small, the rolling width of the supporting roller between the lower supporting portion and the upper supporting portion is excessively large, and thus the supporting roller is supported from the lower supporting portion and the upper supporting portion. The danger of separation.

In view of this, it is highly desirable to provide a damping structure capable of solving the above-mentioned deficiencies.

An object of the present invention is to provide an electromagnetic friction damping module having an electromagnet group capable of generating an adjustable magnetic attraction force, by adjusting the magnitude of the magnetic attraction force, and finally controlling the friction force according to requirements, and effectively achieving the elimination. The effect can be widely applied to various earthquake-resistant structures.

To achieve the above objective, the present invention provides an electromagnetic friction damping module comprising a box body, an elastic member group, an electromagnet group and a friction member group. The housing has a receiving seat and a cover covering the receiving seat, and the elastic member set has a plurality of elastic members disposed in the receiving seat. The electromagnet unit has a plurality of electromagnet units disposed in the accommodating seat and located between the cover and the accommodating seat. The friction member set has a first friction member and a second friction member in contact with the first friction member, the first friction member is fixed on the receiving seat, such that the receiving seat is located in the cover body and the first The second friction member is fixed to a first structure between the friction members. Wherein the cover body presses the elastic member group to generate a pre-stress, the pre-stress is pressed toward the second friction member, and when the box body and the first friction member move relative to the second friction member, the first A frictional force is generated between a friction member and the second friction member, and the electromagnet group selectively adsorbs the cover body by an adjustable magnetic attraction, and the pre-stress is adjusted to make the first friction member The frictional force corresponding to the prestressing force when the second friction member is relatively moved is also correspondingly reduced.

The above objects, technical features, and advantages will be more apparent from the following description.

1‧‧‧Electromagnetic friction damping module

11‧‧‧Box

111‧‧‧ 容座

111a‧‧‧ accommodating slots

112‧‧‧ cover

112a‧‧ Magnetic Department

113‧‧‧Lock hole

12‧‧‧Flexible parts group

12a‧‧‧Flexible parts

13‧‧‧ electromagnet group

13a‧‧‧Electromagnetic unit

14‧‧‧Friction group

14a‧‧‧First friction parts

14b‧‧‧Second friction parts

15‧‧‧Locking component group

15a‧‧‧Locking components

2‧‧‧First structure

20‧‧‧ side

21‧‧‧Upper support plate

22‧‧‧ lower support plate

23‧‧‧Support roller set

231‧‧‧Support roller

231a‧‧‧Axis

3‧‧‧First structure

4‧‧‧Second structure

S1‧‧ magnetic attraction

S2‧‧‧Prestress

FIG. 1A is a schematic plan view showing the structure of the electromagnetic friction damping module of the present invention before assembly.

FIG. 1B is a schematic plan view showing the structure of the electromagnetic friction damping module of the present invention after assembly.

FIG. 2A is a perspective view showing the electromagnetic friction damping module of the present invention combined with the first structural body in one embodiment.

FIG. 2B is a schematic plan view showing the structure of the electromagnetic friction damping module of the present invention combined with the first structural body in an embodiment.

FIG. 3 is a schematic plan view showing the structure of the electromagnetic friction damping module of the present invention combined with the first structural body and the second structural body in another embodiment.

Please refer to FIG. 1A for a schematic plan view of the electromagnetic friction damping module 1 of the present invention before assembly. The electromagnetic friction damping module 1 has a box body 11, an elastic member group 12, an electromagnet group 13, and a friction member group 14. The housing 11 has a receiving seat 111 and a cover 112. The elastic member 12 has a plurality of elastic members 12a disposed in the receiving base 111 and located in the cover 112 and the receiving base 111. The electromagnet group 13 has a plurality of electromagnet units 13a disposed in the housing 111 and located between the cover 112 and the housing 111. In this embodiment, the accommodating seat 111 has a plurality of accommodating grooves 111a, and each of the elastic members 12a and the electromagnet units 13a are respectively received in the accommodating grooves 111a, and each of the elastic members 12a is uncompressed. When the height is higher than each of the accommodating grooves 111a, so that the cover 112 compresses the elastic members 12a, the elastic member 12a can relatively generate a rebounding force (that is, the pre-stress described in the later paragraph). The friction member set 14 has a first friction member 14a and a second friction member 14b in contact with the first friction member 14a. The first friction member 14a is fixed to the receiving seat 111 such that the receiving seat 111 is located in the cover 112. And between the first friction members 14a.

FIG. 1B is a schematic plan view showing the structure of the electromagnetic friction damping module 1 of the present invention after assembly. After the electromagnetic friction damping module 1 is assembled, the cover body 112 presses the elastic member group 12, so that the elastic member group 12 generates a pre-stress S2 and presses the second friction member 14b, when the casing 11 and the first friction The member 14a moves relative to the second friction member 14b, and a frictional force is generated between the first friction member 14a and the second friction member 14b in response to the pre-stress S2. The electromagnet group 13 can selectively adsorb the cover 112 with an adjustable magnetic force S1 to adjust the pre-stress S2. In more detail, when the adjustable magnetic force S1 adsorbs the cover 112, the pre-stress S2 can be partially offset, so that the pre-stress S2 is thus reduced. When the pre-stress S2 is reduced, the friction is also reduced. Small, the friction generated by the electromagnetic friction damping module 1 of the present invention can be adjusted according to requirements.

In the present embodiment, the cover 112 has a magnetic portion 112a, and the magnetic portion 112a is disposed on the cover 112 and above the electromagnet group 13 to supply the magnet assembly 13 with the adjustable magnetic attraction. S1 adsorption. However, in other embodiments of the present invention, the cover 112 may be a magnetic member to directly magnetically adsorb the power supply magnet group 13 having the magnetic portion 112a, or in other embodiments of the present invention, the cover 112 may have a plurality of The magnetic portion 112a is disposed above the electromagnet unit 13a to achieve the magnetic adsorption effect of each of the electromagnet units 13a, which is well known to those skilled in the art and will not be described herein.

In detail, the magnetic attraction force S1 is opposite to the pressing direction of the pre-stress S2 (refer to the arrow portion of FIG. 1B), so the magnetic attraction force S1 can be used to offset the pre-stress S2, that is, the present invention adjusts the respective electromagnets. The magnitude of the current of the unit 13a adjusts the magnetic attraction force S1 of each of the electromagnet units 13a to the cover 112. The larger the current passing through the electromagnet units 13a, the larger the magnetic attraction S1 of the electromagnet unit 13a adsorbing the cover 112 is. Further, the pre-stress S2 generated by the pre-stressing of each elastic member 12a is offset, so that the pre-stress S2 is reduced, and since the pre-stress S2 is pressed toward the second friction member 14b, the smaller the pre-stress S2 is, the smaller the pre-stress S2 is. The friction generated between the first friction member 14a and the second friction member 14b during movement is smaller. On the contrary, the smaller the current passing through the electromagnet units 13a, the smaller the magnetic attraction force S1 of each of the electromagnet units 13a adsorbing the cover 112, and the relative offset of the elastic members 12a becomes smaller, and therefore, each The pre-stress S2 of the elastic member 12a is relatively large because it is not subjected to any wear. In the case where the pre-stress S2 is large, the frictional force generated between the first friction member 14a and the second friction member 14b during movement is relatively large. Thereby, the adjustable magnetic attraction force S1 can be generated by adjusting the current passing through each electromagnet unit 13a, so that the pre-stress S2 and the magnitude of the frictional force can be effectively controlled correspondingly. On the other hand, in the case where the current does not pass through the electromagnet unit 13a and the electromagnet unit 13a does not generate any magnetic attraction force S1, the pre-stress S2 is maintained at the maximum state without any offset force. At this time, the frictional force generated between the first friction member 14a and the second friction member 14b during movement is also maximum.

In this embodiment, the cover 112 can be fixed to the receiving seat 111 through a fixing member (not shown) in advance, so as to achieve the effect that the cover 112 is pressed against the elastic member 12a to generate the prestress S2, and then The fixing member is removed from the cover 112 and the receiving seat 111. However, in other embodiments of the present invention, the cover 112 can be pre-stressed to the elastic members 12a by any other means to generate the pre-stress S2. This is not limited to the lid pressing method of the present embodiment.

It should be noted that the material of the first friction member 14a and the second friction member 14b of the electromagnetic friction damping module 1 of the present invention is not limited, and may be respectively selected from metal or rubber. For example, in an embodiment of the invention, the first friction member 14a is a metal member which can be an iron plate, and the second friction member 14b is a rubber. In other embodiments of the present invention, the first friction member 14a and the second friction member 14b may each be a metal member, and the material may be brass. The material of the friction member group 14 is not particularly limited herein.

2A is a perspective view of the electromagnetic friction damping module 1 of the present invention combined with the first structural body 2 in an embodiment; FIG. 2B is an embodiment of the electromagnetic friction damping module 1 of the present invention. A schematic plan view of the structure combined with the first structural body 2. In this embodiment, the second friction member 14b is fixed to a first structure 2, and the first structure 2 is a vibration isolation system, and the second friction member 14b is fixed to one side 20 of the vibration isolation system, so that The electromagnetic friction damping module 1 is located on the side 20 of the vibration isolation system, and the first friction member 14a is in contact with the second friction member 14b.

As described above, the vibration isolation system has an upper support plate 21, a lower support plate 22 and a support roller set 23 between the upper support plate 21 and the lower support plate 22, and the electromagnetic friction damping module 1 has a lock. The component group 15 extends from the casing 11 and is locked to the support roller set 23, and is implemented in the present embodiment. For example, the box body 11 has a plurality of locking holes 113 through the cover body 112 and the receiving seat 111. The plurality of locking elements 15a of the locking component group 15 are respectively disposed in the locking holes 113, and are received by the receiving seats. The supporting roller set 23 has a plurality of supporting rollers 231, and each of the locking members 15a is attached to each of the supporting rollers 231 along one of the axial centers 231a of the supporting rollers 231. In this embodiment, the second friction member 14b is fixed to the side surface 20 of the vibration isolation system as one side of the lower support plate 22. Thereby, when the supporting roller set 23 rolls, the case 11 and the first friction member 14a of the electromagnetic friction damping module 1 are simultaneously moved relative to the upper support plate 21 and the lower support plate 22, and the first friction member 14a The frictional force is generated correspondingly between the second friction member 14b. As described in the previous paragraph, by adjusting the magnitude of the frictional force, the amplitude of the rolling of the support roller group 23 can be controlled.

It should be noted that, in other embodiments of the present invention, the second friction member 14b may be disposed on one side of the upper support plate 21, or the friction member group 14 may include two first friction members 14a and two second friction members. Each of the second friction members 14b is disposed on the side of the upper support plate 21 and the lower support plate 22, and each of the first friction members 14a is disposed on the casing 11 corresponding to each of the second friction members 14b, and each second The friction members 14b are in contact. The number and arrangement positions of the first friction member 14a and the second friction member 14b are not limited here.

The actual operation of the friction damping system and the vibration isolation system of the present invention will be further described. When the lower support plate 22 is vibrated by the external vibration energy, the support roller group 23 is facilitated between the lower support plate 22 and the upper support plate 21. Rolling, thereby easing the amplitude of the upper support plate 21 swinging. If the external vibration energy is too large, the current passing through the electromagnet group 13 can be reduced, so that the magnetic attraction force S1 corresponding to the electromagnet group 13 corresponding to the cover body 112 is reduced, thereby reducing the prestressing S2 of the offset elastic member group 12. In the case where the pre-stress S2 is large, the force applied to the second friction member 14b is therefore large, so that the first friction member 14a and the second friction member 14b are moved when moving relative to each other. The frictional force is large, and in the case where the frictional force is large, the swinging amplitude of the supporting roller group 23 is limited, and the support roller group 23 from the upper supporting plate 21 and the lower supporting plate 22 can be effectively prevented from being excessively vibrated due to excessive external vibration energy. Separated between.

When the external vibration energy is small, in order to avoid the relative friction between the first friction member 14a and the second friction member 14b, the frictional force is too large, so that the support roller group 23 cannot swing normally, and the current passing through the electromagnet group 13 can be increased. At this time, the magnetic attraction force S1 of the electromagnet group 13 becomes large, and the pre-stress S2 corresponding to the elastic member group 12 is also relatively reduced by the offset of the magnetic attraction force S1, so that the first friction member 14a and the first friction member can be effectively reduced. The frictional force when the two friction members 14b move against each other causes the support roller group 23 to swing normally to slow the swinging amplitude of the upper support plate 21.

FIG. 3 is a schematic plan view showing the structure of the electromagnetic friction damping module 1 of the present invention combined with the first structural body 3 and the second structural body 4 in another embodiment. In the present embodiment, the electromagnetic friction damping module 1 of the present invention is applied to a building. In this embodiment, the first structural body 3 is a diagonal strut structure, and the second structural body 4 is a beam and column of a building. The casing 11 of the electromagnetic friction damping module 1 of the present invention is fixed on the beam and column. The second friction member 14b is fixed to the diagonal structure and is in contact with the first friction member 14a disposed on the casing 11. When the structure is shaken by the external vibration force, the beam and the diagonal structure are also relatively shaken. At this time, the frictional force that the first friction member 14a and the second friction member 14b move relative to each other achieves the effect of dissipating energy and reducing the vibration swing. Similarly, as described above, since the magnetic attraction force S1 generated by the electromagnet group 13 is adjustable, the magnetic attraction force S1 of the electromagnet group 13 with respect to the cover body 112 can be adjusted according to different external vibration energy, correspondingly The pre-stress S2 of the pin elastic member group 12, in turn, controls the magnitude of the friction force when the first friction member 14a and the second friction member 14b move relative to each other to ensure that it can be reduced under the influence of various external vibration energy. Damage to the building.

In another embodiment of the present invention, the electromagnet group 13 of the electromagnetic friction damping module 1 of the present invention can be electrically connected to a control module (not shown), and the control module can include a sensing component. To sense the amount of energy of the external vibration, and then generate corresponding parameters to adjust the magnetic attraction S1 of the electromagnet group 13, and finally achieve the purpose of controlling the magnitude of the friction.

In summary, the electromagnetic friction damping module of the present invention can be installed on a structure, such as various mechanical equipment and structures (such as buildings and bridges), compared with the conventional friction damping system. In the case of adjusting the relative magnetic force between the electromagnetic friction damping module of the present invention and the structure according to the adjustable magnetic attraction force of the electromagnet group and according to the different vibration energy of the external body, the corresponding frictional force is generated. Achieve energy dissipation and effectively protect various mechanical equipment and structures.

The above-described embodiments are only intended to illustrate the embodiments of the present invention, and to explain the technical features of the present invention, and are not intended to limit the scope of protection of the present invention. Any changes or equivalents that can be easily accomplished by those skilled in the art are intended to be within the scope of the invention. The scope of the invention should be determined by the scope of the claims.

1‧‧‧Electromagnetic friction damping module

11‧‧‧Box

111‧‧‧ 容座

111a‧‧‧ accommodating slots

112‧‧‧ cover

112a‧‧ Magnetic Department

12‧‧‧Flexible parts group

12a‧‧‧Flexible parts

13‧‧‧ electromagnet group

13a‧‧‧Electromagnetic unit

14‧‧‧Friction group

14a‧‧‧First friction parts

14b‧‧‧Second friction parts

S1‧‧ magnetic attraction

S2‧‧‧Prestress

Claims (8)

An electromagnetic friction damping module includes: a box body having a receiving seat and a cover body covering the receiving seat; and an elastic member group having a plurality of elastic members disposed in the receiving seat Between the cover body and the accommodating seat; an electromagnet group having a plurality of electromagnet units disposed in the accommodating seat between the cover body and the accommodating seat; and a friction member group having a first friction member and a second friction member are in contact with the first friction member, and the first friction member is fixed on the receiving seat, such that the receiving seat is located between the cover body and the first friction member The second friction member is fixed on a first structural body; wherein the cover body presses the elastic member group to generate a prestressing force, and the prestressing force applies pressure to the second friction member, when the casing and The first friction member moves relative to the second friction member, and a frictional force is generated between the first friction member and the second friction member, and the electromagnet group is selectively adsorbed by an adjustable magnetic attraction force. The cover is adjusted to adjust the prestress. The electromagnetic friction damping module of claim 1, wherein the cover has a magnetic portion for the electromagnet group to adsorb the magnetic portion with the adjustable magnetic attraction. The electromagnetic friction damping module of claim 2, wherein the first structural body is an isolation system, and the second friction member is fixed to one side of the isolation system such that the electromagnetic friction damping module is located The side of the isolation system, and the first friction member is in contact with the second friction member. The electromagnetic friction damping module of claim 3, wherein the vibration isolation system has an upper support plate, a lower support plate and a support roller group between the upper support plate and the lower support plate, the electromagnetic type The friction damping module has a locking component group extending from the casing and being locked to the supporting roller set, wherein the supporting roller group drives the electromagnetic friction damping module relative to the upper supporting plate and the lower The support plate moves, and the frictional force is generated between the first friction member and the second friction member. The electromagnetic friction damping module of claim 4, wherein the casing has a plurality of locking holes passing through the cover body and the receiving seat, and the plurality of locking components of the locking component group are respectively disposed on each of the locks And extending from the accommodating seat, the supporting roller group has a plurality of supporting rollers, each of the locking elements is disposed along an axis of each of the supporting rollers, and is correspondingly locked to each of the supporting rollers On the shaft. The electromagnetic friction damping module of claim 5, wherein one of the first friction member and the second friction member is made of metal or rubber, respectively. The electromagnetic friction damping module of claim 6, wherein a control module is electrically connected to the electromagnet group to indirectly control the adjustable magnetic attraction of the electromagnet set. The electromagnetic friction damping module of claim 7, wherein the casing is fixed to a second structure.