CN111306243A - Slideway type nonlinear energy trap vibration damper - Google Patents
Slideway type nonlinear energy trap vibration damper Download PDFInfo
- Publication number
- CN111306243A CN111306243A CN202010251995.4A CN202010251995A CN111306243A CN 111306243 A CN111306243 A CN 111306243A CN 202010251995 A CN202010251995 A CN 202010251995A CN 111306243 A CN111306243 A CN 111306243A
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- Prior art keywords
- energy trap
- nonlinear energy
- base
- damping device
- metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M5/00—Engine beds, i.e. means for supporting engines or machines on foundations
Abstract
The utility model provides a non-linear energy trap vibration damper of slide formula, relates to antidetonation and subtracts shock isolation device technical field, including base, damping mechanism, the base is reserved has the bolt hole that is used for the solid joint to wait to damp the structure, and damping mechanism includes that mutual parallel arrangement is in a pair of metal spout of base up end, the bottom of metal spout and the up end fixed connection of base, arbitrary the metal spout on equal sliding connection have a pair of non-linear energy trap, the centre of a pair of metal spout and the top that is located non-linear energy trap are equipped with the quality case, be equipped with non-linear spring between the lower terminal surface of quality case and the up end of arbitrary non-linear energy trap respectively, the upper end of non-linear spring and the lower terminal surface angle fixed connection of the quality case of neighbouring, lower extreme and the up end fixed connection of non-linear energy trap. The invention has simple structure, easy operation, replaceable parts, obvious vibration reduction effect and good robustness to the frequency domain, and is suitable for inhibiting the vibration of single-degree-of-freedom and two-degree-of-freedom structures.
Description
Technical Field
The invention relates to the technical field of earthquake-proof, earthquake-reduction and earthquake-isolation devices, in particular to a slide-way type nonlinear energy trap vibration-reduction device.
Background
China is one of the countries with frequent earthquakes, and the loss and disasters caused by earthquakes are very serious, so that the earthquake prevention and disaster reduction of building structures are the research key points of researchers.
The shock absorption of the building structure is to transfer the energy on the main structure to an additional structure by adding an energy consumption device on the building structure, thereby reducing the shock of the building and realizing the shock absorption control.
Damping control is generally divided into passive control, active control, semi-active control, intelligent control, and hybrid control. The nonlinear Energy trap (NES) is a nonlinear passive vibration damping device for target Energy transfer, and in the process of controlling the vibration of a structure, Energy is transferred from a building structure to the nonlinear Energy trap device in a target Energy transfer mode, and the Energy transfer is unidirectional and irreversible, and the device has the characteristics of high transfer efficiency, high speed, strong selectivity on Energy size and the like, and is applied to the aerospace field and machinery.
However, most of the nonlinear vibration damping devices in the prior art have complex structures and are difficult to operate, related parts cannot be replaced, and particularly, the nonlinear vibration damping devices have insufficient effect of suppressing free vibration of the structures or forced vibration of the structures near vibration peaks, and have low control applicability to vibration of different structures at different frequencies.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a slideway type nonlinear energy trap vibration damping device which is simple in structure, easy to operate, capable of replacing parts, applicable to the suppression of single-degree-of-freedom and two-degree-of-freedom structural vibration, remarkable in vibration damping effect and good in frequency robustness.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a non-linear energy trap damping device of slide formula, includes the base and is located the damping mechanism of base upper end, the base reserve and have the bolt hole that is used for the solid joint to treat damping structure, damping mechanism including mutual parallel arrangement in a pair of metal spout of base up end, the bottom of metal spout and the up end fixed connection of base, arbitrary the metal spout on equal sliding connection have a pair of non-linear energy trap, the centre of a pair of metal spout and the top that is located non-linear energy trap be equipped with the quality case, the up end of lower terminal surface of quality case and arbitrary non-linear energy trap between be equipped with the non-linear spring respectively, the upper end of non-linear spring and the lower terminal surface angle fixed connection of the quality case of neighbouring, the up end fixed connection of lower extreme and non-linear energy trap.
Preferably, the metal chute be the arc structure that the opening up, nonlinear energy trap around the longitudinal axis evenly distributed of quality case, still be equipped with the chamfer inclined plane with metal chute matched with in the lower extreme off-plate side's of nonlinear energy trap angular edge department, chamfer inclined plane department install rubber pulley, nonlinear energy trap pass through rubber pulley and metal chute sliding connection.
Preferably, the mass box comprises a cubic shell made of steel plates and tubular round holes penetrating through the front end face and the rear end face of the shell, and the mass block is detachably and fixedly connected in the tubular round holes.
Preferably, the mass block is a solid round steel bar, the solid round steel bar is embedded in the tubular round hole, and threaded covers are further arranged at two ends of the tubular round hole.
Preferably, the base include upper steel sheet, lower floor's steel sheet and be located the rubber layer between upper steel sheet and the lower floor's steel sheet, upper steel sheet, rubber layer, lower floor's steel sheet pass through high strength bolt fixed connection.
Preferably, the metal chute is made of wear-resistant and corrosion-resistant materials; the rubber pulley is made of polyurethane rubber material.
Preferably, the thicknesses of the groove bottom and the groove wall of the metal sliding groove are not less than 8mm, the thicknesses of the upper layer steel plate and the lower layer steel plate are not less than 5mm, and the thickness of the rubber layer is not less than 10 mm.
Preferably, the total mass of the mass box and the mass is 1% -5% of the mass of the structure to be damped.
Preferably, the base and the structure to be damped are fixedly connected through a high-strength bolt.
The slideway type nonlinear energy trap vibration damper has the following beneficial effects:
(1) aiming at different structures to be damped, the number or the position of the solid round steel rods, the rigidity of the nonlinear spring and the arc number of the metal sliding groove can be changed, so that the vibration damping device can be used for responding to different types of structures to be damped, still can play a role in inhibiting vibration, has wide applicability and is worthy of popularization and use.
(2) The invention solves the problem of poor robustness of the traditional vibration damping device to the frequency domain, and the vibration damping effect of the structure to be damped is obvious under wide frequency.
(3) The vibration damping device is simple in structure, convenient to machine and reliable in performance, and solves the problems that a traditional vibration damping device is large in size, complex in operation and difficult to maintain efficient vibration damping for a long time.
Drawings
FIG. 1: is a schematic structural diagram of the front side of the invention;
FIG. 2: is a side structure schematic diagram of the invention;
FIG. 3: is a schematic view of the top view structure of the invention;
FIG. 4: is a schematic structural diagram of the quality box of the invention;
1: quality box, 2: nonlinear spring, 3: nonlinear energy trap, 4: rubber pulley, 5: metal runner, 6: the steel plate on the upper layer is provided with a steel plate,
7: rubber layer, 8: lower layer steel plate, 9: high-strength bolt, 10: bolt hole, 11: tubular round hole, 12: a housing.
Detailed Description
In the following, embodiments of the present invention are described in detail in a stepwise manner, which is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only used for describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, the present invention is not to be construed as being limited thereto.
Examples 1,
As shown in fig. 1 to 3, the present embodiment provides the most basic structure of the present invention, and a slideway type nonlinear energy trap vibration damping device includes a base and a vibration damping mechanism located at the upper end of the base, the base is reserved with a bolt hole 10 for fixedly connecting a structure to be damped, the vibration damping mechanism includes a pair of metal chutes 5 arranged in parallel on the upper end surface of the base, the bottom ends of the metal chutes 5 are fixedly connected with the upper end surface of the base, any one of the metal chutes 5 is connected with a pair of nonlinear energy traps 3 in a sliding manner, a mass box 1 is further arranged between the pair of metal chutes 5 and above the nonlinear energy traps 3, nonlinear springs 2 are respectively connected between the lower end surface of the mass box 1 and the upper end surface of any one of the nonlinear energy traps 3, and the upper ends of the nonlinear springs 2 are fixedly connected with the corners of the lower end surface of the adjacent mass box 1, The lower end is fixedly connected with the upper end surface of the nonlinear energy trap 3.
In this embodiment, the base can pass through the bolt hole 10 through the high strength bolt 9 and fix at the top of waiting to damp the structure, the bottom of metal chute 5 can be through welded mode and base upper surface fixed connection, nonlinear energy trap 3, nonlinear spring 2 and quality case 1 fixed connection are an organic whole, as shown in fig. 3, quality case 1 is located 4 nonlinear springs 2 and 4 nonlinear energy traps middle top, nonlinear spring 2 can adopt spiral nonlinear spring, its rigidity can be adjusted according to waiting to damp the actual conditions of structure.
Examples 2,
On the basis of embodiment 1, the present embodiment is further improved, specifically: as shown in fig. 1, the metal chute 5 is an arc-shaped structure with an upward opening, as shown in fig. 3, the nonlinear energy traps 3 are uniformly distributed around the longitudinal axis of the mass box 1, as shown in fig. 1, a chamfer inclined surface matched with the metal chute 5 is further arranged at a corner edge on the outer side of the lower end surface of the nonlinear energy trap 3, a rubber pulley 4 is installed at the chamfer inclined surface, and the nonlinear energy trap 3 is slidably connected with the metal chute 5 through the rubber pulley 4.
In this embodiment, the metal chute 5 is an arc-shaped structure, as shown in fig. 1, the energy transmitted by the structure to be damped is absorbed by the generated nonlinear restoring force by using the nonlinear spring 2 and the arc-shaped structure of the metal chute 5, and in practical application, the radian of the metal chute 5 can be changed according to the actual situation of the structure to be damped, so as to generate the required nonlinear restoring force.
Examples 3,
On the basis of embodiments 1 and 2, the present embodiment makes further improvements, specifically: as shown in fig. 4, the mass box 1 includes a cubic housing 12 made of steel plate, and tubular round holes 11 penetrating the front and rear end surfaces of the housing 12, wherein a mass block is detachably and fixedly connected in the tubular round holes 11;
the mass block is a solid round steel bar, the solid round steel bar is embedded in the tubular round hole 11, and threaded covers are arranged at two ends of the tubular round hole 11;
the total mass of the mass box 1 and the mass block is 1% -5% of the mass of the structure to be damped.
The embodiment discloses a concrete structure of quality case 1, as shown in fig. 4, 2 rows about tubular round hole 11 can be set for, and the quality accessible of quality case 1 increases or reduces the quantity of solid round steel stick and controls, also can make quality case 1 can adapt to the damping needs of different structures of waiting to damp through changing the position of solid round steel stick on quality case 1. Specifically, can confirm the quality piece of exerting in quality case 1 according to the quality of waiting to damp the structure, owing to set up two rows of upper and lower tubulose round holes 11, through evenly putting the different tubulose round holes to solid round steel stick, accomplished both can change the quality piece quality, can change the quality piece position again and reduce the structure vibration.
Examples 4,
On the basis of embodiments 1 to 3, the present embodiment is further improved, specifically: as shown in fig. 1, the base comprises an upper steel plate 6, a lower steel plate 8 and a rubber layer 7 positioned between the upper steel plate 6 and the lower steel plate 8, wherein the upper steel plate 6, the rubber layer 7 and the lower steel plate 8 are fixedly connected through a high-strength bolt 9;
the metal chute 5 is made of wear-resistant and corrosion-resistant metal materials; the rubber pulley 4 is made of polyurethane rubber material;
the thickness of the groove bottom and the groove wall of the metal sliding groove is not less than 8mm, the thickness of the upper layer steel plate 6 and the lower layer steel plate 8 is not less than 5mm, and the thickness of the rubber layer 7 is not less than 10 mm.
In the embodiment, as shown in fig. 3, the upper steel plate 6 is connected with the lower steel plate 8 through four high-strength bolts 9, the metal chute 5 is arranged between the four high-strength bolts 9, and the rubber layer 7 is arranged between the steel plates, so that excessive shaking of the vibration damping mechanism caused by vibration of the vibration damping structure can be greatly reduced, and the vibration damping efficiency is improved.
The invention utilizes the nonlinear restoring force generated by the nonlinear spring 2 and the friction between the rubber pulley 4 and the metal sliding chute 5 to carry out vibration reduction and energy consumption on the structure to be subjected to vibration reduction, can inhibit the response of the structure to be subjected to vibration reduction under different load excitations, and is easy to operate for experimenters or engineering operators.
Claims (9)
1. A slideway type nonlinear energy trap vibration damping device, characterized by: including the base and be located the damping mechanism of base upper end, the base reserve and have the bolt hole that is used for the solid joint to treat the damping structure, damping mechanism including mutual parallel arrangement in a pair of metal chute of base up end, the bottom of metal chute and the up end fixed connection of base, arbitrary the metal chute on equal sliding connection have a pair of nonlinear energy trap, the centre of a pair of metal chute and the top that is located nonlinear energy trap be equipped with the quality case, the lower terminal surface of quality case and the up end of arbitrary nonlinear energy trap between be equipped with nonlinear spring respectively, the upper end of nonlinear spring and the lower terminal surface angle fixed connection of the quality case that is close to, the up end fixed connection of lower extreme and nonlinear energy trap.
2. A slideway type nonlinear energy trap vibration damping device as in claim 1 wherein: the metal chute be opening arc structure up, nonlinear energy trap around the longitudinal axis evenly distributed of quality case, the lower extreme off-plate side's of nonlinear energy trap angular edge department still be equipped with metal chute matched with chamfer inclined plane, chamfer inclined plane department install the rubber pulley, nonlinear energy trap pass through rubber pulley and metal chute sliding connection.
3. A slideway type nonlinear energy trap damping device as in any one of claims 1 and 2, wherein: the quality box comprises a cubic shell made of steel plates and tubular round holes penetrating through the front end face and the rear end face of the shell, and the quality block is detachably and fixedly connected in the tubular round holes.
4. A slideway type nonlinear energy trap vibration damping device as in claim 3 wherein: the mass block is a solid round steel bar, the solid round steel bar is embedded in the tubular round hole, and threaded covers are further arranged at two ends of the tubular round hole.
5. A slideway type nonlinear energy trap vibration damping device as in any one of claims 1, 2 and 4, wherein: the base include upper steel sheet, lower floor's steel sheet and be located the rubber layer between upper steel sheet and the lower floor's steel sheet, upper steel sheet, rubber layer, lower floor's steel sheet pass through high strength bolt fixed connection.
6. A slideway type nonlinear energy trap damping device as in any one of claims 2 and 4, wherein: the metal sliding chute is made of wear-resistant and corrosion-resistant materials; the rubber pulley is made of polyurethane rubber material.
7. A slideway type nonlinear energy trap damping device as in claim 5 wherein: the thickness of the groove bottom and the groove wall of the metal sliding groove is not less than 8mm, the thickness of the upper layer steel plate and the lower layer steel plate is not less than 5mm, and the thickness of the rubber layer is not less than 10 mm.
8. A slideway type nonlinear energy trap vibration damping device as in any one of claims 3 and 4, wherein: the total mass of the mass box and the mass block is 1% -5% of the mass of the structure to be damped.
9. A slideway type nonlinear energy trap vibration damping device as in any one of claims 1, 2, 4 and 7 wherein: the base and the structure to be damped are fixedly connected through a high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251995.4A CN111306243B (en) | 2020-04-01 | 2020-04-01 | Slideway type nonlinear energy trap vibration damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251995.4A CN111306243B (en) | 2020-04-01 | 2020-04-01 | Slideway type nonlinear energy trap vibration damper |
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| CN111306243A true CN111306243A (en) | 2020-06-19 |
| CN111306243B CN111306243B (en) | 2021-04-06 |
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| CN202010251995.4A Active CN111306243B (en) | 2020-04-01 | 2020-04-01 | Slideway type nonlinear energy trap vibration damper |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0558285A (en) * | 1991-09-03 | 1993-03-09 | Fujita Corp | Travelling body with lateral osillation damping device |
| EP0556033A1 (en) * | 1992-02-14 | 1993-08-18 | Kajima Corporation | Vibration control device for structure |
| CN103306316A (en) * | 2013-05-09 | 2013-09-18 | 东北林业大学 | Three-dimensional composite friction pendulum vibration isolator based on nonlinear energy trap |
| CN205134603U (en) * | 2015-11-12 | 2016-04-06 | 同济大学 | Two degree of freedom bump levellers based on nonlinearity energy trap |
| CN109780130A (en) * | 2019-02-28 | 2019-05-21 | 西安理工大学 | A kind of nonlinear energy trap shock-absorbing means for whole star vibration suppression |
| CN110230661A (en) * | 2019-06-12 | 2019-09-13 | 东北大学 | A kind of nonlinear energy trap with piecewise linearity beam applied to rotor-support-foundation system |
| CN110296182A (en) * | 2019-06-28 | 2019-10-01 | 西安理工大学 | A kind of tuning quality damper vibration damping system being incorporated to nonlinear energy trap |
| CN110715782A (en) * | 2019-10-15 | 2020-01-21 | 河海大学 | Vortex-induced vibration suppression experimental device based on nonlinear energy trap |
| CN110886808A (en) * | 2019-12-04 | 2020-03-17 | 上海大学 | Amplitude limiting type nonlinear energy trap vibration damper |
-
2020
- 2020-04-01 CN CN202010251995.4A patent/CN111306243B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0558285A (en) * | 1991-09-03 | 1993-03-09 | Fujita Corp | Travelling body with lateral osillation damping device |
| EP0556033A1 (en) * | 1992-02-14 | 1993-08-18 | Kajima Corporation | Vibration control device for structure |
| CN103306316A (en) * | 2013-05-09 | 2013-09-18 | 东北林业大学 | Three-dimensional composite friction pendulum vibration isolator based on nonlinear energy trap |
| CN205134603U (en) * | 2015-11-12 | 2016-04-06 | 同济大学 | Two degree of freedom bump levellers based on nonlinearity energy trap |
| CN109780130A (en) * | 2019-02-28 | 2019-05-21 | 西安理工大学 | A kind of nonlinear energy trap shock-absorbing means for whole star vibration suppression |
| CN110230661A (en) * | 2019-06-12 | 2019-09-13 | 东北大学 | A kind of nonlinear energy trap with piecewise linearity beam applied to rotor-support-foundation system |
| CN110296182A (en) * | 2019-06-28 | 2019-10-01 | 西安理工大学 | A kind of tuning quality damper vibration damping system being incorporated to nonlinear energy trap |
| CN110715782A (en) * | 2019-10-15 | 2020-01-21 | 河海大学 | Vortex-induced vibration suppression experimental device based on nonlinear energy trap |
| CN110886808A (en) * | 2019-12-04 | 2020-03-17 | 上海大学 | Amplitude limiting type nonlinear energy trap vibration damper |
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