CN1847556A

CN1847556A - Damping controller for suspended tuning mass damper

Info

Publication number: CN1847556A
Application number: CN 200610057990
Authority: CN
Inventors: 闫维明; 纪金豹; 鄢圣超; 何浩祥; 樊柯
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2006-03-03
Filing date: 2006-03-03
Publication date: 2006-10-18
Anticipated expiration: 2026-03-03
Also published as: CN100396861C

Abstract

The present invention relates to damping controller for suspended tuning mass damper used for tower type building structure. The damping controller has rigid suspending rod, rather than flexible wire, for supporting balance weight to avoid its torsion and jitter; cross universal hinge for connecting the main structure and the rigid suspending rod and makes it possible to control the vibrations in different directions; and friction damping fin, rather than piston type damper, mounted in the cross bearing site to provide damping. The present invention can perform damping and vibration controlling stably and effectively, and has convenient regulation of three control parameters and no need of maintenance.

Description

Damping controller for suspended tuning mass damper

Technical field

The present invention relates to a kind of damping controller for suspended tuning mass damper, especially a kind ofly can avoid balancing weight to reverse and shake, and can use for a long time and the damping control device that need not to keep in repair, can be used for the vibration damping control of tower building structure etc.

Background technology

Damping controller for suspended tuning mass damper (Tuned Mass Damper, be called for short TMD) be installed in the building structure, utilize resonance principle, the vibrational energy absorption of agent structure is transferred on the control device, thereby the wind that reduces building structure shakes and earthquake response, international and domestic more application has been arranged.Computational analysis and facts have proved, when the TMD quality is suitable, the frequency of TMD control device and agent structure frequency are approaching, and the damping ratio of TMD is between 3-7% the time, and the vibrational energy of controlled building structure is farthest transferred on the TMD control device.Under the TMD of optimum device control parameters (quality that comprises TMD, frequency and damping), the TMD device can reduce that main body controlled structures wind shakes and earthquake response reaches more than the 40-50%, and vibration damping control effect is very considerable.

At present, existing suspension TMD damping control device is mainly by balancing weight, and messenger wire and damper are formed, as shown in Figure 1.Balancing weight 3 is suspended on the agent structure 1 by messenger wire 2, and piston type damper 4 and spring assembly 5 are set between balancing weight and the structure.There are the following problems for existing suspension TMD damping control device: (1) only uses the balancing weight of messenger wire (being generally steel strand) suspention to occur easily reversing and shake up and down, has influenced control stability; (2) damping unit of existing suspension TMD damping control device adopts the piston type damper more, not only can not revise damping parameter after machining, and have more serious problems such as resisting medium seepage, and need regular inspection, often just needed in several years to change fully.Frequent maintenance is changed and has been had a strong impact on its applying in actual engineering.

Summary of the invention

In order to improve the job stability of existing suspension TMD damping control device, prevent balancing weight at work shake and reverse, and overcome its damping unit and need shortcomings such as frequent maintenance replacing, the invention provides a kind of damping controller for suspended tuning mass damper, this device not only can reduce the horizontal vibration with a plurality of directions of control structure, and avoided reversing and shaking of balancing weight, and new damping mode can use for a long time and need not maintain and replace.

The technical solution adopted in the present invention mainly comprises the universal hinge 8 of cross, balancing weight 3, rigid hanger 16, frictional damping sheet 20, extension spring 5 specifically referring to Fig. 2～7; Wherein, the universal hinge 8 of cross is connected with agent structure 1, frictional damping sheet 20 is set around the axle head of universal hinge 8 rotating shafts of cross, and balancing weight 3 hangs on the bottom of the universal hinge 8 of cross by rigid hanger 16, and the bottom of rigid hanger 16 adopts extension spring 15 to be connected with agent structure 1.

Two rotating shafts in the universal hinge 8 of described cross on the relative direction are fixed on the levelling plate 6 on the agent structure by top chock 7, connect step 14 in two rotating shafts on universal hinge 8 another relative directions of cross, step 14 is fixedly connected by being connected crossbeam with the upper end of rigid hanger 16, referring to Fig. 2, Fig. 3.

The deep groove ball bearing 11 of band dust cap all is set on described top chock 7, the step 14, is fixed in the axis hole of bearing support, referring to Fig. 4 by circlip for hole 13, baffle ring 10, shading ring 12.

Described frictional damping sheet 20 is positioned on the metal (upper seat by damping fin setscrew nut 21, and the termination of two frictional damping sheets is bound up by resistance trimming screw 22 and stage clip 23, referring to Fig. 7.

Extension spring connector 17 is installed in described rigid hanger 16 bottoms, the two ends of extension spring 5 all are connected on extension spring connector 17, the agent structure 1 by lifting bolt 19, the 17 upper and lower side settings of extension spring connector are by regulating its turn fine setting setscrew nut 18 of height up and down, referring to Fig. 5.

The present invention replaces flexible messenger wire 2 with rigid hanger 16, shake to avoid reversing with vertical of balancing weight 3, and the universal hinge 8 of cross that adopts can guarantee that TMD all plays the vibration damping control action to each horizontal direction.Abandon traditional piston type damper 4, and adopted the frictional damping sheet 20 that is wrapped in the universal hinge rotating shaft of cross position that the damping of TMD is provided, can regulate the damping of TMD by the pretightning force of regulating the frictional damping sheet easily.The frictional damping sheet is made simple, does not have problems such as the seepage of piston type damper and parameter instability, can use for a long time and need not maintenance.

After adopting said structure, can stabilizing effectively carry out vibration damping and vibration isolation, can carry out the adjustment of three controlling parameter easily as required, and can use for a long time and need not maintenance.

Description of drawings

The present invention is further described below in conjunction with drawings and embodiments.

Fig. 1 is existing damping controller for suspended tuning mass damper constructional drawing.

Fig. 2 is a constructional drawing of the present invention.

Fig. 3 is the lateral view of Fig. 2.

Fig. 4 is a zanjon bearing partial enlarged drawing.

Fig. 5 is the vertical view of bottom extension spring part.

Fig. 6 is that the universal hinge of cross holds component diagram.

Fig. 7 is frictional damping sheet section construction figure.

Among the figure:

The 1-agent structure, 2-messenger wire, 3-balancing weight, 4-piston type damper, the 5-extension spring, 6-levelling plate, 7-top chock, the universal hinge of 8-cross, the 9-circlip for shaft, 10-baffle ring, 11-band dust cap deep groove ball bearing, 12-shading ring, the 13-circlip for hole, the 14-step, 15-connects crossbeam, 16-rigid hanger, 1-extension spring connector, 18-frequency modulation nut, 19-lifting bolt, 20-frictional damping sheet, 21-damping fin setscrew nut, 22-resistance trimming screw, 23-stage clip.

The specific embodiment

Fixing levelling plate 6 on agent structure 1, as shown in Figure 1.Top chock 7 is fixed on the levelling plate.Deep groove ball bearing 11 usefulness baffle rings 10, shading ring 12 and the circlip for hole 13 of band dust cap are fixed in the axis hole of top chock, and by circlip for shaft 9 chuckings, see shown in Figure 4.The two bearings of the universal hinge 8 of cross penetrates (the universal hinge structure of cross is referring to Fig. 6) in the deep groove ball bearing, can freely rotate in a plane.Step 14 is suspended on the two bearings of another vertical direction of the universal hinge of cross.The same deep groove ball bearing of installing shown in Fig. 2 side view, can be suspended under the universal hinge of cross step and freely rotates in another vertical plane between the universal hinge of step and cross held.Connecting 15 on crossbeam is fixed under two steps.The connection crossbeam is passed in rigid hanger 16 upper ends, is fixed with bolt, and balancing weight 3 is passed in the lower end.Balancing weight can be gathered into folds to regulate the gross mass of balancing weight easily by some flaggies.Extension spring connector 17 is installed in the suspension rod bottom, as shown in Figure 5.One end of extension spring 5 is connected on the extension spring connector by lifting bolt 19, and the other end then is connected on the agent structure by lifting bolt.Extension spring prestretching sufficient length is to guarantee to be in the duty of tension always in the TMD running.By turn fine setting setscrew nut 18 can up-down adjustment extension spring connector height (as Fig. 1,2), thereby the frequency of regulating this suspension TMD control device.This TMD device adopts frictional damping sheet 20 that damping is provided.The frictional damping sheet is wrapped in (as Fig. 1, shown in 2,7) around four axle heads of the universal hinge rotating shaft of cross, is positioned on the metal (upper seat by damping fin setscrew nut 21.Two frictional damping sheet terminations are bound up by resistance trimming screw 22 and stage clip 23, and apply certain pretightning force.The pretightning force of regulating the resistance trimming screw can be regulated the damping of TMD control device very easily.

Claims

1, a kind of damping controller for suspended tuning mass damper comprises balancing weight (3), extension spring (5), it is characterized in that: also comprise the universal hinge of cross (8), rigid hanger (16), frictional damping sheet (20); Wherein, the universal hinge of cross (8) is connected with agent structure (1), around the universal hinge of cross (8) rotating shaft frictional damping sheet (20) is set, and balancing weight (3) hangs on the bottom of the universal hinge of cross (8) by rigid hanger (16).

2, a kind of damping controller for suspended tuning mass damper according to claim 1 is characterized in that: two rotating shafts in the universal hinge of described cross (8) on the relative direction are fixed on the levelling plate (6) on the agent structure by top chock (7); Connect step (14) in two rotating shafts on another relative direction of the universal hinge of cross (8), step (14) is fixedly connected by being connected crossbeam with the upper end of rigid hanger (16).

3, a kind of damping controller for suspended tuning mass damper according to claim 1, it is characterized in that: described frictional damping sheet (20) is wrapped in around the universal hinge of cross (8) rotating shaft, regulates the damping of frictional damping sheet (20) by regulating resistance trimming screw (22).

4, a kind of damping controller for suspended tuning mass damper according to claim 1, it is characterized in that: extension spring connector (17) is installed in described rigid hanger (16) bottom, the two ends of extension spring (5) all are connected on extension spring connector (17), the agent structure (1) by lifting bolt (19), extension spring connector (17) upper and lower side setting by regulate its up and down the turn fine setting setscrew nut (18) of height to regulate the frequency of this damping control device.