CN107061609A - A kind of earthquake isolating equipment suitable for side crops industry electrical equipment - Google Patents

A kind of earthquake isolating equipment suitable for side crops industry electrical equipment Download PDF

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Publication number
CN107061609A
CN107061609A CN201710333484.5A CN201710333484A CN107061609A CN 107061609 A CN107061609 A CN 107061609A CN 201710333484 A CN201710333484 A CN 201710333484A CN 107061609 A CN107061609 A CN 107061609A
Authority
CN
China
Prior art keywords
sliding block
equipment
sliding
electrical equipment
earthquake isolating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710333484.5A
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Chinese (zh)
Inventor
王昊
辛军
韩春辉
陆杨
任建兴
朱全军
曹枚根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai University of Electric Power
University of Shanghai for Science and Technology
Original Assignee
Shanghai University of Electric Power
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai University of Electric Power filed Critical Shanghai University of Electric Power
Priority to CN201710333484.5A priority Critical patent/CN107061609A/en
Publication of CN107061609A publication Critical patent/CN107061609A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression 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

Abstract

The present invention relates to a kind of earthquake isolating equipment suitable for side crops industry electrical equipment, including upper bracket plate (1), lower support plate (2) and sliding block (3), described sliding block (3) is arranged between upper bracket plate (1) and lower support plate (2), it is connected at the top of described upper bracket plate (1) with electrical equipment, bottom has sliding block cavity volume, described lower support plate (2) bottom is connected with ground, and top has the sliding block sliding surface of spheric.Compared with prior art, structure of the present invention is simple, easy for installation, without damping endocentric construction, it is possible to achieve Self-resetting, so it is more easy in actual applications, and add the reliability of earthquake isolating equipment.

Description

A kind of earthquake isolating equipment suitable for side crops industry electrical equipment
Technical field
The present invention relates to a kind of earthquake isolating equipment, more particularly, to a kind of earthquake isolating equipment suitable for side crops industry electrical equipment.
Background technology
China is the country of earthquake more than one, and violent earthquake can cause serious damage to electrical equipment in transformer station, and Electrical equipment brings serious loss once the production and living that damage can give people in transformer station, it is therefore necessary to strengthen transformer station The antidetonation shock attenuation research of interior electrical equipment.Base Isolation Technology is to improve one of limited approach of structure or equipment shock resistance, Seismic isolation technology fundamentally changes traditional simple anti-shock methods that " hard anti-" is carried out by increase structural strength, by notable Reduce the fundamental frequency of structure to avoid the high energy frequency band of seismic wave, so as to by part seismic energy " barrier ", reduce and be input to knot The seismic energy of structure.Also, earthquake isolating equipment enters the plastotype stage prior to superstructure, and seismic energy is mainly by the modeling of Seismic Isolation of Isolation Layer Property deformation and damping consume, therefore, superstructure can keep elasticity substantially without occurring serious destruction.
Earthquake isolating equipment is applied on the large scale structures such as bridge, building, and has played significant role under geological process. And do not have the shock insulation application of this respect for the electrical equipment of side crops industry in transformer station at present.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind is suitable to side crops industry electricity The earthquake isolating equipment of gas equipment, by the way that the electrical equipment in transformer station is linked together by bottom girder steel and earthquake isolating equipment, from And a shock isolation system is formed, so as to mitigate earthquake to the destruction caused by Substation Electric Equipment.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of earthquake isolating equipment suitable for side crops industry electrical equipment, including upper bracket plate, lower support plate and sliding block, described cunning Block is arranged between upper bracket plate and lower support plate, is connected at the top of described upper bracket plate with electrical equipment, bottom has sliding block Cavity volume, described lower support plate bottom is connected with ground, and top has the sliding block sliding surface of spheric.
Part is identical with the sliding block cavity volume surface curvature contacted on described sliding block, and slider bottom is contacted with sliding block sliding surface Surface curvature is identical.
Described slider bottom radius of curvature is more than the radius of curvature of upper part.
Described sliding block cavity volume surface and sliding block sliding surface carry teflon coatings.
The natural vibration period of described earthquake isolating equipmentWherein, DdAt the beginning of design displacement, i.e. sliding block Beginning, position was to the horizontal range of lower support plate end position limiting structure, and μ is that slider bottom contacts the friction system on surface with sliding block sliding surface Number, R is the radius of curvature that bottom contacts surface with sliding block sliding surface, and g is acceleration of gravity, and T spans are electrical equipment self-vibration 2~3 times of cycle.
Compared with prior art, the present invention has advantages below:
(1) it is simple in construction, it is easy for installation, without damping endocentric construction, it is possible to achieve Self-resetting.
(2) surface that the surface that is contacted with sliding block cavity volume of part, slider bottom are contacted with sliding block sliding surface on sliding block has phase Same radius of curvature, can completely fit, and upper bracket plate is remained level in bearing sliding with sliding surface, it is ensured that electrically The level of equipment, mitigates earthquake to the destruction caused by Substation Electric Equipment.
(3) slider bottom radius of curvature is more than the radius of curvature of upper part, it is ensured that upper bracket plate is in motion process Keep stable, while slide displacement is not too large, superstructure will not also be forced to raise too much in motion process.
(4) sliding block cavity volume surface and sliding block sliding surface carry teflon coatings, and thickness is 15~25um, can be in sliding process Consumed energy, reduces amplitude.
(5) natural vibration period of earthquake isolating equipment and the quality of superstructure are unrelated, therefore with good stability.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment earthquake isolating equipment;
Fig. 2 is the present embodiment earthquake isolating equipment force analysis figure.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to Following embodiments.
Embodiment
As shown in figure 1, a kind of earthquake isolating equipment suitable for side crops industry electrical equipment, including upper bracket plate 1, the and of lower support plate 2 Sliding block 3, sliding block 3 is arranged between upper bracket plate 1 and lower support plate 2, and the top of upper bracket plate 1 is fixedly connected with electrical equipment, bottom Portion has sliding block cavity volume, and the bottom of lower support plate 2 is fixedly connected with the ground, and top has the sliding block sliding surface of spheric.It is embedded in sliding block Be hinged sliding block 3 and sliding block sliding surface in cavity volume have identical radius of curvature, can completely be fitted with sliding block sliding surface, and make upper bracket Plate 1 remains level when sliding, in the design process, using polytetrafluoroethylene (PTFE) (Teflon) as low-friction material, thick Spend for 20 μm, can in sliding process consumed energy.When the geological process that sliding surface is subject to exceedes stiction, ground level Athletic meeting promotes sliding block to be slided in its arc surface, so as to force superstructure slightly to be raised, occurs simple harmonic motion, its structure shape Formula is as shown in Figure 2.
Shock isolation system can be reduced to a sliding block along Circular Sliding as shown in Figure 2 in the stress of sliding mode, wherein Slideway radius and slider bottom circular arc radius surface are R, and sliding block quality is that the coefficient of friction of m sliding blocks and arc surface is μ, sliding block phase It is θ for the corner that vertical symmetry axis is moved.The vertical force that sliding block is produced by superstructure gravity is W and horizontal applied force is F, sphere tangential direction frictional force f and normal orientation counter-force N.Power and the positive direction of displacement are as shown in coordinate system in the figure.Symbol system Number is:
By the stress balance of sliding block, square, ∑ M are taken to O pointsO=0, i.e.,
FR cos θ-WD-fR=0
Then, the horizontal force F of shock isolating pedestal can be expressed as " restoring force " and " frictional force " sum, i.e.,
When θ very littles, above formula can be reduced to:
From above formula, the rigidity of shock isolating pedestal is
Kfps=W/R
Equivalent stiffness is
Assuming that the rigidity of the superstructure of isolation structure is Ks, the equivalent stiffness K for shock isolating pedestal of having connectedeffAfterwards, shock insulation system The equivalent stiffness of system is
For isolation structure, general KsMuch larger than Keff, Ke≈Keff.Therefore, the equivalent natural vibration period of isolation structure be
Above formula illustrates, the natural vibration period of isolation structure only with sliding surface spherical radius R, friction coefficient μ and susceptor design position Move DdIt is relevant, and it is unrelated with the quality of superstructure, therefore with good stability.If in terms of maximum control residual displacement Consider, there must be μ R=Dd, then above formula can be reduced to
The radius of curvature and coefficient of friction of major design sliding block when designing shock isolating pedestal, can by the radius of curvature of sliding block To learn the cycle of shock isolating pedestal.In the case of the known superstructure cycle, make shock insulation by reasonably designing radius of curvature The intrinsic frequency of bearing avoids the intrinsic frequency of structure, so as to avoid resonance.
For the high voltage electric equipment of small load in transformer station, such as disconnecting switch, arrester, voltage transformer, electric current Transformer etc., can arrange that different number of shock isolating pedestal is used for shock insulation in device bottom as the case may be.
Electrical equipment is all relatively lighter in transformer station, and weight is smaller, and center of gravity is higher, easily topples, and passes through entirety Coupling beam connects electrical equipment so that overall center of gravity declines, then that designed friction-pendulum shock-insulation support is reasonable Overall coupling beam bottom is arranged in, makes it play its predictive role to reach preferable isolating affection when meeting with earthquake.

Claims (6)

1. a kind of earthquake isolating equipment suitable for side crops industry electrical equipment, it is characterised in that including upper bracket plate (1), lower support plate (2) With sliding block (3), described sliding block (3) is arranged between upper bracket plate (1) and lower support plate (2), described upper bracket plate (1) top Portion is connected with electrical equipment, and bottom has sliding block cavity volume, and described lower support plate (2) bottom is connected with ground, and top has ball The sliding block sliding surface of face shape.
2. a kind of earthquake isolating equipment suitable for side crops industry electrical equipment according to claim 1, it is characterised in that described cunning Part, surface curvature phase that sliding block (3) bottom with sliding block sliding surface contact identical with the sliding block cavity volume surface curvature contacted on block (3) Together.
3. a kind of earthquake isolating equipment suitable for side crops industry electrical equipment according to claim 1, it is characterised in that described cunning Block (3) bottom curvature radius is more than the radius of curvature of upper part.
4. a kind of earthquake isolating equipment suitable for side crops industry electrical equipment according to claim 1, it is characterised in that described cunning Block cavity volume surface and sliding block sliding surface carry teflon coatings.
5. a kind of earthquake isolating equipment suitable for side crops industry electrical equipment according to claim 1, it is characterised in that described spy Fluorine dragon coating layer thickness is 15~25um.
6. a kind of earthquake isolating equipment suitable for side crops industry electrical equipment according to claim 1, it is characterised in that it is described every Shake the equivalent natural vibration period of deviceWherein, DdArrived for design displacement, i.e. sliding block (3) initial position The horizontal range of lower support plate (2) end position limiting structure, μ is the coefficient of friction that sliding block (3) bottom contacts surface with sliding block sliding surface, R is the radius of curvature that bottom contacts surface with sliding block sliding surface, and g is acceleration of gravity, and T spans are electrical equipment natural vibration period 2~3 times.
CN201710333484.5A 2017-05-12 2017-05-12 A kind of earthquake isolating equipment suitable for side crops industry electrical equipment Pending CN107061609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710333484.5A CN107061609A (en) 2017-05-12 2017-05-12 A kind of earthquake isolating equipment suitable for side crops industry electrical equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710333484.5A CN107061609A (en) 2017-05-12 2017-05-12 A kind of earthquake isolating equipment suitable for side crops industry electrical equipment

Publications (1)

Publication Number Publication Date
CN107061609A true CN107061609A (en) 2017-08-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107761556A (en) * 2017-11-16 2018-03-06 北京工业大学 Consume energy spacing variable curvature sliding friction shock isolating pedestal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090188179A1 (en) * 2005-12-16 2009-07-30 Steelpat Gmbh & Co. Kg Friction pendulum bearing
CN203451989U (en) * 2013-08-01 2014-02-26 深圳市市政设计研究院有限公司 Friction pendulum vibration isolation support with self-test function
CN205907592U (en) * 2016-07-18 2017-01-25 深圳市市政设计研究院有限公司 Intelligence friction pendulum bearing , monitoring support and intelligent support system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090188179A1 (en) * 2005-12-16 2009-07-30 Steelpat Gmbh & Co. Kg Friction pendulum bearing
CN203451989U (en) * 2013-08-01 2014-02-26 深圳市市政设计研究院有限公司 Friction pendulum vibration isolation support with self-test function
CN205907592U (en) * 2016-07-18 2017-01-25 深圳市市政设计研究院有限公司 Intelligence friction pendulum bearing , monitoring support and intelligent support system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国公路学会桥梁和结构工程学会: "《JT/T852-2013 公路桥梁摩擦摆式减隔震支座》", 《桥梁专用产品标准汇编(二)》 *
谷岩: "《桥梁抗震与抗风》", 31 July 2014, 天津大学出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107761556A (en) * 2017-11-16 2018-03-06 北京工业大学 Consume energy spacing variable curvature sliding friction shock isolating pedestal
CN107761556B (en) * 2017-11-16 2020-07-31 北京工业大学 Energy-consumption limiting variable-curvature sliding friction shock-insulation support

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Application publication date: 20170818