CN2797440Y

CN2797440Y - Self-lift pressing head vibrator ice isolation vibration device

Info

Publication number: CN2797440Y
Application number: CN 200420056672
Authority: CN
Inventors: 王翎羽
Original assignee: HAIWANGXING OCEAN ENGINEERING TECHNOLOGY Co LTD TIANJIN CITY
Current assignee: HAIWANGXING OCEAN ENGINEERING TECHNOLOGY Co LTD TIANJIN CITY
Priority date: 2004-12-10
Filing date: 2004-12-10
Publication date: 2006-07-19
Anticipated expiration: 2014-12-10

Abstract

The utility model relates to a self-lift pressing head vibrator ice isolation vibration device, which is arranged on a leg column 6 of a structural object in the sea area of an ice zone and can automatically left following the fluctuation of the tide level to play the ice isolation vibration function. The utility model is composed of inner concave pressing heads 1 which are sheathed on the middle part of the leg column 6, pressing head vibrators which are composed of an upper and a lower rigidity sliding rings 5 which are respectively connected with the upper and the lower ends of the pressing heads 1 by a plurality of elastic elements 3 and dampers 4, and an annular floating tank 2 which is welded with the lower edges of the pressing heads into an integrative body. The pressing head vibrators are directly impacted by ice rows 9 to generate self-induced vibration to absorb most of ice impacting energy to reduce the energy of the input structural objects, and good ice isolation vibration effect is obtained. The pressing head vibrators maintain the gravity and the hydrostatic balance by that the annular floating tank 2 is positioned on the water surface 8 and can self lift along the leg column 1 following the tidal difference. The pressing head vibrator ice isolation vibration device can self lift following the tide level and has the advantages of simple structure, small size and low cost, and the utility model is suitable for the sea areas with the tidal difference.

Description

From lifting pressure head oscillator every ice vibrating device

Technical field

The utility model belong to ocean engineering structure leg cylinder system every the shake innovation of protective device of ice.

Background technology

There is ice sea area works leg post to adopt additional bevels (or positive back taper) to open ice usually, its principle is to utilize the ice raft breakage properties, by additional bevels or positive back taper are set in leg post ice action section, make ice raft become bending failure, thereby reduce ice power, change ice power frequency by local squeeze and destroy.Although additional bevels can cause the contact area of ice raft and structure to increase, total ice carries and still can reduce greatly.In order to overcome the too huge shortcoming of the anti-ice piton body in the bigger sea area of tidal range section, reduce to ice contact area simultaneously with structure, Tianjin NOED company has developed " from lifting cone icebreaking device " (patent application number 20042002988.6), has solved problem to a certain extent.But, make from lifting cone icebreaking device and become comparatively complicated, and the corresponding cost that improved owing to increased plunger case hydraulic system and tidal level sensor-based system.

Summary of the invention

In order to overcome from lifting cone icebreaking device complex structure, shortcoming that cost is high, the purpose of this utility model provide a kind of from lifting pressure head oscillator every ice vibrating device, this device not only open ice and every ice shake effective, can change lifting voluntarily with tidal range, and structure is simple relatively, cheap.

The technical scheme that its technical problem that solves the utility model adopts is: every the ice vibrating device, be made up of pressure head, flexible member, damper, rigidity slip ring and annular buoyancy tank by this device from lifting pressure head oscillator for suit on the leg post that the ice sea area is arranged.It is characterized in that said pressure head up and down all is connected with upper and lower two rigidity slip rings respectively with damper by some uniform flexible members and forms an elastic device---pressure head oscillator jointly in two ends, the pressure head oscillator directly is subjected to the ice raft bump to produce self-excited vibration and absorb most of ice Impact energy, thereby reduce the energy of input structure thing, reach good every the ice effect of shaking.Pressure head is middle part indent structure, and as adopting the positive back taper of microcephaly's combination, its effect is directly to bear the ice raft bump and make the ice point of force application from transferring to recess in the pressure head middle part; Pressure head be enclosed within on the leg post and and the leg post big gap is arranged as between vibrating area, between vibrating area greater than the pressure head amplitude; Flexible member generally adopts wire spring, also can adopt rubber tyre or other rubber element, and its effect is pressure head to be become the flexible pressure head of moderate finite deformation displacement is arranged, and absorbs impact energy; Damper adopts adjustable type, and its effect is the control ram movement speed; The effect one of rigidity slip ring is the flexible member on the same cross section is connected as a single entity and makes flexible member keep pre-tension state, the 2nd, and being enclosed within on the leg post and with the leg intercolumniation has less gap, makes the pressure head oscillator and ice power be passed to the leg post along the lifting of leg post; The annular buoyancy tank is enclosed within on the leg post and is welded in the pressure head lower edge, and the leg post has big gap as between vibrating area, it acts on one is to keep gravity and the buoyant equilibrium of pressure head oscillator every the ice vibrating device when ballast makes the pressure head middle part be positioned at the water surface by regulating, can be with the tidal level variation along leg post free lifting; The 2nd, make the pressure head oscillator reach the design natural frequency by quality of regulation.

The invention has the beneficial effects as follows: open ice and every ice shake effective, and physical dimension is less, the structure simple relatively, cheap.

Description of drawings

The present invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is every ice vibrating device front elevation view from lifting pressure head oscillator.

Fig. 2 is every ice vibrating device A-A vertical view from lifting pressure head oscillator.

Fig. 3 is every ice vibrating device B-B sectional view from lifting pressure head oscillator.

1-pressure head among the figure; 2-annular buoyancy tank; The 3-flexible member; The 4-damper; 5-rigidity slip ring; 6-leg post; Between the 7-vibrating area; The 8-water surface; The 9-ice raft.

The specific embodiment

A kind of from lifting pressure head oscillator every ice vibrating device, form by pressure head 1, annular buoyancy tank 2, flexible member 3, damper 4 and rigidity slip ring 5.Pressure head all is connected the common pressure head oscillator of forming respectively by some uniform flexible members 3 and damper 4 in two ends about in the of 1 with upper and lower two rigidity slip rings 5; Pressure head 1 lower edge and annular buoyancy tank 2 are welded as a whole; Can integral body after the assembling of above structure is finished be enclosed within on the leg post 6 and transfer in the entry.By being transferred to carry, annular buoyancy tank 2 make the middle part of pressure head 1 just in time be positioned at the water surface 8, this moment, the pressure head oscillator was every gravity and the buoyant equilibrium of icing vibrating device, and can simultaneously because pressure head 1 has adopted middle part indent structure, make the meeting of ice action point with the tidal level variation and along leg post free lifting from suitable pressure head 1 middle part that transfer to.Therefore the pressure head oscillator is applicable to that every the ice vibrating device works leg post in any tidal range sea area shakes every ice, and physical dimension is less relatively, cheap.

When ice raft 9 acted on pressure head 1, pressure head 1 displacement increased gradually, and the elastic energy of flexible member 3 builds up, and counter-force also increases gradually simultaneously.Reach compressive strength when pressure head 1 counter-force makes to ice, ice raft 9 destroys, and the elastic energy of flexible member 3 discharges, pressure head 1 bounce-back; Long one section ice raft 9 can be destroyed, be eliminated to pressure head 1 bounce-back process, and through longer a period of time, ice raft 9 could contact pressure head 1 again after the bounce-back.This shows that the ice raft 9 and the interaction of pressure head oscillator can be divided into three phases: compression stage, fragmentation---removing stage and noncontact stage.Compression stage is elastic deformation stage (load increases the stage gradually), and lasting of this stage of pressure head oscillator that flexibility is big more is long more; Broken---in the removing stage (burst unloading phase), lasting of this stage is very short; In the noncontact stage (load was 0 stage), lasting of this stage is longer; The pressure head oscillator absorbs most of ice Impact energy in the above process, thereby reduces the energy of input structure thing, reaches good in the ice effect of shaking; The load that puts on the pressure head oscillator has long period and pulse characteristic, and this Load Transfer is given works leg post 6, can not produce violent vibration.

Claims

One kind from lifting pressure head oscillator every ice vibrating device, be installed on the leg post of ice sea area works, form by pressure head, flexible member, damper, rigidity slip ring and annular buoyancy tank, it is characterized in that: be connected with damper by some uniform flexible members respectively between two rigidity slip rings and the pressure head upper and lower side and form the pressure head oscillator that directly is subjected to the ice raft bump to absorb Impact energy.
According to claim 1. described from lifting pressure head oscillator every the ice vibrating device, it is characterized in that: one of pressure head lower edge welding can make the annular buoyancy tank of pressure head oscillator on bubbling through the water column.
According to claim 1. described from lifting pressure head oscillator every the ice vibrating device, it is characterized in that: pressure head oscillator and annular buoyancy tank be enclosed within on the leg post and and the leg post big gap is arranged as between vibrating area.
According to claim 1. described from lifting pressure head oscillator every the ice vibrating device, it is characterized in that: pressure head has adopted middle part indent structure, as adopting the positive back taper of microcephaly's combination.
According to claim 1. described from lifting pressure head oscillator every the ice vibrating device, it is characterized in that: the general employing of flexible member is in pre-tension state wire spring.
According to claim 1. described from lifting pressure head oscillator every the ice vibrating device, it is characterized in that: damper adopts the adjustable type damper.