CN206707372U - A kind of suspension-mass pendulum vibration insulating system with rocker bearing - Google Patents

Abstract

The utility model belongs to the antivibration area of civil engineering tall and slender structure, there is provided a kind of suspension-mass pendulum vibration insulating system with rocker bearing.A kind of suspension-mass pendulum vibration insulating system with rocker bearing is made up of mass ball, cycloid, fixed plate, rocker bearing and bottom plate.Compared with traditional quality is put, the utility model adds rocker bearing, solves the problems, such as the non-linear effects and frequency misalignment of tall and slender structure suspension-mass pendulum.Suspension-mass pendulum is when putting on angular oscillation, pendulum length is gradually reduced, for offsetting the cycle increase caused by big swing angle, using the rocker bearing of design, change its effective length put, controlling cycle is invariable, so as to improve the accuracy of suspension-mass pendulum design, solve the problems, such as frequency misalignment, and in harsh environments, the utility model also can normal work, safeguard simple.

Description

A kind of suspension-mass pendulum vibration insulating system with rocker bearing

Technical field

The utility model belongs to the antivibration area of civil engineering tall and slender structure, there is provided a kind of with rocker bearing Suspension-mass pendulum vibration insulating system.

Background technology

With the development of industrial technology, there are various types of tall and slender structures.Tall and slender structure has the higher and water of height The characteristics of flat rigidity is more soft, being influenceed very sensitive, excessive dynamic response by dynamic load to structure safety and will use Function causes many hidden danger, such as：Fatigue rupture；Comfort level is inadequate；Influence normal work of structure etc..Structural vibration control is A kind of new way to solve the above problems, wherein suspension-mass pendulum system have good damping result, principle simple, easy for installation Advantage, thus be increasingly valued by people.

Suspension-mass pendulum has been obtained for applying in Practical Project, and suspension-mass pendulum is a kind of frequency sensitive type vibration damping dress Put, effectiveness in vibration suppression is dependent on suspension-mass pendulum and the natural frequency of vibration of structure.However, due to the reasons such as structural failure and aging, knot The fundamental frequency of structure main body can occur to change accordingly, and at this moment detuning phenomena will occur for vibration insulating system, and effectiveness in vibration suppression greatly reduces.

It is this and current adaptive suspension-mass pendulum vibration insulating system is both needed to sensor and actuator carrys out timely adjustment pendulum length Although the adaptive damping system/ADS good damping result of form, accurate electromechanics and sensor-based system are needed, usual cost is more Costliness, maintenance cost is high, and its reliability and stability is difficult to be protected in actual large scale civil engineering, and in adverse circumstances Under the conditions of, the damage of some electronic components is possible to cause adaptive damping system/ADS not work.

Utility model content

In order to solve the above problems, a kind of suspension-mass pendulum damping system with rocker bearing of utility model, it is used for Change effective pendulum length of suspension-mass pendulum, and then change its cycle, make its invariable.

The technical solution of the utility model：A kind of suspension-mass pendulum vibration insulating system with rocker bearing, adds arc Bearing 4, it is therefore an objective to which in swing process, cycloid receives the stop of bearing, and then changes the pendulum length of single pendulum.

A kind of rocker bearing of suspension-mass pendulum, including mass ball 1, cycloid 2, fixed plate 3, rocker bearing 4 and bottom plate 5；

The described one ends wound mass ball 1 of cycloid 2, the other end passes through rocker bearing 4 and bottom plate 5, and is fixed by pad 7 On bottom plate 5, the center overlapping of axles of cycloid 2 and rocker bearing 4；The central point of rocker bearing 4 is welded on bottom plate 5, arc branch The circumference of seat 4 is fixedly connected by fixed plate 3, and fixed plate 3 is also secured on bottom plate 5.

The beneficial effects of the utility model：The utility model solve tall and slender structure suspension-mass pendulum non-linear effects and Frequency misalignment problem.When putting on angular oscillation, pendulum length is gradually reduced suspension-mass pendulum, for offsetting the cycle caused by big swing angle Increase, using the rocker bearing of design, change the effective length of its pendulum, controlling cycle is invariable, so as to improve suspention matter The accuracy of amount ornaments meter, solves the problems, such as frequency misalignment.

Brief description of the drawings

Fig. 1 is the overall diagram of suspension-mass pendulum vibration insulating system of the utility model with rocker bearing.

Fig. 2 is the elevation of suspension-mass pendulum vibration insulating system of the utility model with rocker bearing.

Fig. 3 is profile of the utility model in A-A directions.

Fig. 4 is rocker bearing structure chart.

Fig. 5 is the sign picture of suspension-mass pendulum vibration insulating system of the utility model with rocker bearing.

Fig. 6 is rocker bearing curve when actual pendulum length is 1m (curve is rotated by 360 ° to obtain rocker bearing 4).

In figure：1 mass ball；2 cycloids；3 fixed plates；4 rocker bearings；5 bottom plates；6 bolts hole；

7 pads.

Embodiment

Below in conjunction with accompanying drawing and technical scheme, specific embodiment of the present utility model is further illustrated.

A kind of suspension-mass pendulum damping system with rocker bearing, including mass ball 1, cycloid 2, rocker bearing 4.

Overall schematic of the present utility model, facade, profile as shown in Figure 1-Figure 3, shape such as Fig. 4 institutes of rocker bearing Show.It is unstable to avoid bearing 4 from vacantly hanging, plus fixed plate 3, bearing 4 and bottom plate 5 is preferably fixed；For cycloid 2 Can preferably it fix with swinging, cycloid 2 is made up of tendon, can increase stress, a hole is stamped at the center of bottom plate 5, makes pendulum One end of line 2 can pass through bottom plate 5, be knotted above bottom plate 5, and be fixed with pad 7, other end quality of connection ball 1, this Sample ensures that cycloid 2 very firm can play a role；Bolt hole 6 is stamped within one week in bottom plate 5, bottom plate can be bolted 5 and need to set the structure of suspension-mass pendulum so that quality pendulum is stable to be hung in structure.

Specific mounting means of the present utility model is as follows：First, with reinforcing bar one ends wound mass ball 1, the other end is by reinforcing bar It is threaded together and forms tendon and pass through bearing 4 and bottom plate 5, is fixed in the top pad 7 of bottom plate 5, fixed plate is used within 4 one weeks in bearing 3 weld together bearing 4 and bottom plate 5, are finally fixed by bolts to bottom plate 5 in the structure for wanting resettlement effect to put.

The design of rocker bearing 4 is determined by below equation：

Wherein：l′:Equivalent pendulum length (shown in Fig. 5)；

l:Actual pendulum length (cycloid length when pivot angle is 0 °)；

x:With the change of angle, the projected length of rocker bearing in the direction of the x axis；

y:With the change of angle, the projected length of rocker bearing in the y-axis direction；

T:The cycle of suspension-mass pendulum；

S:Cycloid is wound on the length on rocker bearing (shown in Fig. 5)；

θ:Pivot angle (shown in Fig. 5).

When actual pendulum length is 1m, the shape and x of rocker bearing 4, y-axis coordinate, as shown in Figure 6.Understood by formula 3,4, X, y-axis length and pendulum length l are linear.

The advantages of the utility model, can be summarized as follows：On the one hand, can swing week of the suspension-mass pendulum in the case of big swing angle Phase, solve the problems, such as vibration insulating system frequency misalignment, and improve the accuracy of design suspension-mass pendulum.On the other hand, can be very Reducing cost expense and maintenance cost, its stability and reliability in big degree can be greatly improved.And construct letter It is single, make and installation process is simple, strong applicability is easy to maintenance, can be played in the damping control system of tall and slender structure very well Effect.

Claims (1)

1. a kind of suspension-mass pendulum vibration insulating system with rocker bearing, it is characterised in that described rocker bearing includes quality Ball (1), cycloid (2), fixed plate (3), rocker bearing (4) and bottom plate (5)；

Described cycloid (2) one ends wound mass ball (1), the other end passes through rocker bearing (4) and bottom plate (5), and passes through pad (7) it is fixed on bottom plate (5), the center overlapping of axles of cycloid (2) and rocker bearing (4)；The central point of rocker bearing (4) is welded on On bottom plate (5), the circumference of rocker bearing (4) is fixedly connected by fixed plate (3), and fixed plate (3) is also secured on bottom plate (5)；

Described rocker bearing (4) are determined by below equation：

Wherein：l′:Equivalent pendulum length；

l:Actual pendulum length, cycloid length when pivot angle is 0 °；

x:With the change of angle, the projected length of rocker bearing in the direction of the x axis；

y:With the change of angle, the projected length of rocker bearing in the y-axis direction；

T:The cycle of suspension-mass pendulum；

S:Cycloid is wound on the length on rocker bearing；

θ:Pivot angle.