CN107152486B - A kind of viscous damper with hydraulic fuse function - Google Patents

A kind of viscous damper with hydraulic fuse function Download PDF

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Publication number
CN107152486B
CN107152486B CN201610121878.XA CN201610121878A CN107152486B CN 107152486 B CN107152486 B CN 107152486B CN 201610121878 A CN201610121878 A CN 201610121878A CN 107152486 B CN107152486 B CN 107152486B
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CN
China
Prior art keywords
chamber
hole
viscous
core
cylinder
Prior art date
Application number
CN201610121878.XA
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Chinese (zh)
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CN107152486A (en
Inventor
文登
唐璐
孙湘民
韩鹏飞
袁可
刘军
郭红锋
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株洲时代新材料科技股份有限公司
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Publication of CN107152486A publication Critical patent/CN107152486A/en
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Publication of CN107152486B publication Critical patent/CN107152486B/en

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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
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • 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
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • 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
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods

Abstract

The present invention provides a kind of viscous damper with hydraulic fuse function, including cylinder body, piston rod and piston, the piston is installed in cylinder body and cylinder body is separated into first chamber and second chamber, viscous medium, the second one-way valve that the piston is equipped with the first check valve for allowing viscous medium to flow from first chamber to second chamber and viscous medium is allowed to flow from second chamber to first chamber are filled in the first chamber and second chamber.The present invention has the advantages that work efficiency is high, maintenance cost is low.

Description

A kind of viscous damper with hydraulic fuse function

Technical field

The present invention relates to damping (vibration) technical field more particularly to a kind of viscous dampers with hydraulic fuse function.

Background technique

In the 1970s, viscous damper is gradually introduced the earthquake resistant engineerings such as building, bridge field, due to having The advantages that structure is simple, at low cost, damping effect is obvious, is widely applied.Conventional viscous damper generally uses hydraulic Cylinder formula structure.It is mainly made of piston, piston rod, cylinder body, viscous liquid and sealing system, and cylinder body is divided into two chambers by piston Body, cavity is interior to be full of viscous liquid, and two cavitys can pass through damping hole or gap switching traffic.When viscous damper is in work When state, piston rod drives piston motion, and two cavitys is made to form pressure difference, so that it is low to force viscous medium to enter from high pressure chest Press chamber.The consumption of energy is realized by viscous fluid shearing effect, to realize the purpose of damping energy consumption, it is seen then that conventional is viscous As long as stagnant damper loaded load, viscous damper both ends will generate relative displacement, i.e. either common load or earthquake Etc. big loads environment, viscous damper both ends can generate relative displacement, consume energy, and subtract shock insulation in the part of bridge construction Control field, for common loads such as wind, temperature, brake, small earthquakes, it is desirable that viscous damper is not sent out as rigid link Raw relative displacement, in strong wind, violent earthquake or when being more than certain dynamic load(loading), it is desirable that viscous damper absorbs energy, reduces vibration, To guarantee structure safety, it is clear that conventional viscous damper is unable to satisfy requirement.

In order to solve the above technical problems, the prior art uses metal fuse dampers, principle is damped in conventional viscous Metal device for fusing is installed at the both ends of device, and metal device for fusing has a crack critical value, when load is less than critical value, gold Belong to device for fusing and limits the relative motion at damper both ends;When load is greater than critical value, the fracture of metal device for fusing, thus Viscous damper both ends can normal relative motion to absorb energy.But metal device for fusing needs replacing if fracture, Cause low efficiency, maintenance cost high.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and providing one kind, work efficiency is high, maintenance expense With the low viscous damper with hydraulic fuse function.

In order to solve the above technical problems, technical solution proposed by the present invention are as follows:

A kind of viscous damper with hydraulic fuse function, including cylinder body, piston rod and piston, the piston are installed on It is separated into first chamber and second chamber in cylinder body and by cylinder body, is filled with viscous Jie in the first chamber and second chamber Matter, the piston are equipped with the first check valve for allowing viscous medium to flow from first chamber to second chamber and allow viscous Jie The second one-way valve that matter is flowed from second chamber to first chamber.

As a further improvement of the above technical scheme:

First check valve, second one-way valve include valve pocket, core, compressed spring and adjust screw, the valve pocket It is equipped with stepped throughhole, the core is installed between compressed spring and the stepped part of stepped throughhole, the compressed spring One end holds out against core, and the other end is connected with screw is adjusted;First passed through for viscous medium is offered on the adjusting screw to lead to Hole.

The stepped throughhole includes sequentially connected diameter holes, middle hole and large diameter hole, is equipped in the middle hole With the core mounting portion of core cooperation, the core mounting portion is equipped with the axial hole being connected to diameter holes and is connected to large diameter hole Tapered hole, the core is connected to the inner wall of the tapered hole by compressed spring;

The adjusting of viscous medium flow after adjusting the first check valve or second one-way valve unlatching is bolted in the diameter holes Plug-in unit, the plug-in unit that adjusts are equipped with the second through-hole passed through for viscous medium.

The adjusting screw is bolted in the large diameter hole, and the compressed spring is sheathed on the adjusting screw, described The depth that is spirally connected for adjusting screw is the depth that is spirally connected that precompression needed for guaranteeing compressed spring is standard selection.

Sliding sleeve is equipped between the compressed spring and the core, the center of the sliding sleeve end face is equipped with and ball Core pushes against the protrusion of cooperation, and the sliding sleeve is equipped with the third through-hole passed through for viscous medium.

The both ends of the stepped throughhole are equipped with circlip.

The both ends of the cylinder body are equipped with end cover, and the end cover is fixed by dead ring, the sealed end Lid and dead ring are equipped with the axial hole for wearing the piston rod.

One end of the piston rod is fixedly connected with an active connection, and the other end of the piston rod is slidedly arranged on the sealing In the axial hole of end cap and dead ring;Piston rod is equipped with fixedly connected part far from the side of active connection, described to be fixedly connected Part is installed on the cylinder body.

The fixedly connected part is installed on the cylinder body by link block, the link block be equipped with for piston rod to Mobile avoid holes.

Compared with the prior art, the advantages of the present invention are as follows:

The present invention is provided with check valve on piston, and check valve is in close state when load is less than fusing critical value, So that viscous medium can not be exchanged between chamber;In the open state when load is greater than fusing critical value, viscous medium is by height Press chamber movement to low-pressure chamber, effectively realize viscous damper lock at light load, heavy duty (earthquake) when passive energy dissipation mesh 's;And while guaranteeing effectiveness in vibration suppression, check valve can Reusability, avoid using metal device for fusing need to repeat replacement Problem, work efficiency is high, maintenance cost is low.

The present invention is further bolted with adjusting plug-in unit in diameter holes, and it is adjustable viscous to adjust plug-in unit after check valve unlatching Damping force characteristic after damper fusing, and adjust plug-in unit and be spirally connected installation, replacement facilitates.

Detailed description of the invention

The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:

Fig. 1 is structural schematic diagram of the invention.

Fig. 2 is the structural schematic diagram of check valve of the present invention.

Fig. 3 is the structural schematic diagram of valve pocket of the present invention.

In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.

Each label indicates in figure:

1, cylinder body;11, first chamber;12, second chamber;13, end cover;14, dead ring;15, viscous medium;2, living Stopper rod;3, piston;4, check valve;41, the first check valve;42, second one-way valve;43, valve pocket;44, core;45, compressed spring; 46, screw is adjusted;461, first through hole;47, stepped throughhole;471, diameter holes;472, middle hole;473, large diameter hole;48, ball Core mounting portion;481, axial hole;482, tapered hole;49, sliding sleeve;491, protrusion;492, third through-hole;5, plug-in unit is adjusted;51, Second through-hole;6, circlip;7, active connection;8, fixedly connected part;9, link block.

Specific embodiment

Under the present invention will be described in further details in conjunction with Figure of description and specific embodiment, but therefore do not limit Protection scope of the present invention processed.

If Fig. 1 to Fig. 3 shows the embodiment that the present invention has the viscous damper of hydraulic fuse function, have hydraulic molten The part that the viscous damper of disconnected function is suitable for bridge construction subtracts shock insulation control field, for wind, temperature, brake, small earthquake Relative displacement does not occur for equal common loads, viscous damper, in strong wind, violent earthquake or when being more than certain dynamic load(loading), it is desirable that viscous Stagnant damper absorbs energy, reduces vibration, to guarantee structure safety.In the present embodiment, the viscous resistance with hydraulic fuse function Buddhist nun's device includes cylinder body 1, piston rod 2 and piston 3, and piston 3 is installed in cylinder body 1 and cylinder body 1 is separated into size variation, total volume The sum of constant first chamber 11 and second chamber 12, viscous medium 15 is filled in first chamber 11 and second chamber 12, Piston 3 is equipped with the first check valve 41 and second one-way valve 42, and the first check valve 41 allows viscous medium 15 from first chamber 11 It is flowed to second chamber 12, second one-way valve 42 allows viscous medium 15 to flow from second chamber 12 to first chamber 11, piston Bar 2 is moved axially with piston 3, and viscous medium 15 can move to low-pressure chamber from high-pressure chamber.The present invention is arranged on piston 3 There is check valve 4, check valve 4 is in close state when load is less than fusing critical value, so that can not exchange between chamber viscous Medium 15;In the open state when load is greater than fusing critical value, viscous medium 15 moves to low-pressure chamber by high-pressure chamber, Effectively realize viscous damper lock at light load, heavy duty (earthquake) when passive energy dissipation purpose;And guaranteeing effectiveness in vibration suppression Meanwhile check valve 4 can Reusability, avoid using metal device for fusing need to repeat replace the problem of, work efficiency is high, maintenance Expense is low.

In the present embodiment, the first check valve 41, second one-way valve 42 include valve pocket 43, core 44, compressed spring 45 and Screw 46 is adjusted, valve pocket 43 is equipped with stepped throughhole 47, and core 44 is installed on the rank of compressed spring 45 Yu stepped throughhole 47 Between terraced portion, 45 one end of compressed spring holds out against core 44, and 45 other end of compressed spring is connected with screw 46 is adjusted;Adjust screw 46 On offer the first through hole 461 passed through for viscous medium 15.When load is less than fusing critical value, pressure that core 44 is subject to Less than the pretightning force of compressed spring 45, core 44 can not be moved and be closed from holding check valve 4;When load is greater than fusing critical value When, pressure that core 44 is subject to is greater than the pretightning force of compressed spring 45, core 44 it is mobile and from open check valve 4, viscous medium 15 move to low-pressure chamber by high-pressure chamber by check valve 4.

In the preferred embodiment, stepped throughhole 47 includes sequentially connected diameter holes 471, middle hole 472 and large diameter hole 473, the first check valve 41, second one-way valve 42 stepped throughhole 47 be opposed.In the present embodiment, the first check valve 41, the quantity of second one-way valve 42 is one, and the first check valve 41, second one-way valve 42 are symmetrically arranged on the piston 3, In other embodiments, first check valve 41, second one-way valve 42 quantity passive energy dissipation effect can be improved to be multiple Fruit.

In the present embodiment, it is bolted in diameter holes 471 and adjusts plug-in unit 5, opened in the first check valve 41 or second one-way valve 42 Damping force characteristic after adjusting the adjustable viscous damper fusing of plug-in unit after opening, adjusts plug-in unit 5 and is equipped with for viscous medium 15 By the second through-hole 51, viscous damper after adjusting the size of the second through-hole 51, quantity and the adjustable fusing of length Damping force characteristic, and the quantity for adjusting plug-in unit 5 can be improved by way of increasing by 4 quantity of check valve, improving passive energy dissipation effect While fruit, the controllability of viscous damper damping force characteristic is also improved;Meanwhile adjusting plug-in unit 5 and being spirally connected installation, replacement side Just quick.

In the present embodiment, the core mounting portion 48 cooperated with core 44,48 spiral shell of core mounting portion are installed in middle hole 472 Be connected in middle hole 472, core mounting portion 48 is equipped with the axial hole 481 that is connected and tapered hole 482, axial hole 481 with it is small Diameter hole 471 is connected to, and tapered hole 482 is connected to large diameter hole 473, and core 44 is connected to the interior of tapered hole 482 by compressed spring 45 Wall.

In the present embodiment, adjusting screw 46 and be bolted in large diameter hole 473, compressed spring 45, which is sheathed on, to be adjusted on screw 46, The axial displacement of core 44 is limited at this time, it is therefore prevented that core 44 is detached from core mounting portion 48 because generating over-large displacement.It adjusts The depth that is spirally connected of screw 46 is the depth that is spirally connected that precompression needed for guaranteeing compressed spring 45 is standard selection, by adjusting screw 46 The adjustable screw 46 that adjusts of the depth that is spirally connected obtain the fusing critical value of design.

In the present embodiment, sliding sleeve 49 is equipped between compressed spring 45 and core 44, and sliding sleeve 49 is set to large diameter hole 473 It is interior, and sliding axially along large diameter hole 473, the center of 49 end face of sliding sleeve are equipped with protrusion 491, the abutting face of protrusion 491 It stretches out large diameter hole 473 and core 44 pushes against and cooperates, and pushed against with core 44 and keep tangent;Sliding sleeve 49 is equipped with for viscous medium 15 third through-holes 492 passed through.

In the present embodiment, there are through-hole, shapes on adjusting plug-in unit 5, core mounting portion 48, sliding sleeve 49 and adjusting screw 46 At the channel for exchanging viscous medium 15 between first chamber 11 and second chamber 12, core 44 is tight by the effect of compressed spring 45 The inner wall for pasting 48 tapered hole 482 of core mounting portion, can turn off or on channel.Structure is simple and convenient to operate.It is being preferably implemented In example, the quantity at least two of the third through-hole 492 on sliding sleeve 49 and the first through hole 461 on adjusting screw 46, through-hole Diameter it is as big as possible, to reduce influence to viscous damper mechanical characteristic.

In the present embodiment, sealing element is equipped between piston 3 and cylinder body 1, and the setting of sealing element effectively prevents viscous Jie The phenomenon that matter 15 circulates between chamber, piston 3 are equipped with slide unit, guarantee between piston 3 and cylinder body 1 without axial gap and can have Effect sliding.In the present embodiment, sealing element and slide unit also are provided between piston rod 2 and end cover 13 and dead ring 14, Guarantee that piston rod 2 can also be along axial effectively sliding while sealing.In the present embodiment, the both ends of stepped throughhole 47 are equipped with elasticity Retaining ring 6, circlip 6 is for fixing the first check valve 41 and second one-way valve 42.

In the present embodiment, the both ends of cylinder body 1 are equipped with end cover 13, and end cover 13 is fixed by dead ring 14, Seal cavity is formed, dead ring 14 is bolted on cylinder body 1, replacement end cover 13 easy to disassemble;End cover 13 and dead ring 14 are equipped with axial hole 481, and piston rod 2 is arranged in axial hole 481.

In the present embodiment, one end of piston rod 2 is fixedly connected with an active connection 7, and the other end of piston rod 2 is slidedly arranged on close In the axial hole 481 for blocking lid 13 and dead ring 14, the middle part of piston rod 2 is spirally connected piston 3;Piston rod 2 is far from active connection 7 Side be equipped with fixedly connected part 8, fixedly connected part 8 is installed on cylinder body 1 by link block 9, link block 9 and 1 screw thread of cylinder body Connection, link block 9 are equipped with the avoid holes moved axially for piston rod 2.In the present embodiment, active connection 7 is articulated with bridge In beam body, fixedly connected part 8 is articulated on bridge pier, in other embodiments, active connection 7 and fixedly connected part 8 It can be articulated on the other components with relative displacement of bridge construction.

In the present embodiment, when bridge beam body and Bridge Pier are when occurring relative displacement, load passes through 7 He of active connection Piston rod 2 conducts, to move with piston 3;The movement of piston 3 will make first chamber 11 and second chamber 12 generate pressure Difference, compressing viscous medium 15 is moved from high-pressure chamber toward low-pressure chamber, to consume energy.Specifically, when load is less than fusing When critical value, pressure that core 44 is subject to is less than the pretightning force of compressed spring 45, core 44 can not move and from keeping check valve 4 It closes, viscous medium 15 can not be exchanged between chamber, viscous damper is in the lock state;When load is greater than fusing critical value When, pressure that core 44 is subject to is greater than the pretightning force of compressed spring 45, core 44 it is mobile and from open check valve 4, viscous medium 15 move to low-pressure chamber by high-pressure chamber by check valve 4, and viscous damper starts to act on, and play consumption energy and reduce vibration Effect.

Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.

Claims (7)

1. a kind of viscous damper with hydraulic fuse function, including cylinder body, piston rod and piston, the piston are installed on cylinder It is separated into first chamber and second chamber in vivo and by cylinder body, is filled with viscous Jie in the first chamber and second chamber Matter, which is characterized in that the piston is equipped with the first check valve for allowing viscous medium to flow from first chamber to second chamber And the second one-way valve for allowing viscous medium to flow from second chamber to first chamber;
When load is less than fusing critical value, first check valve and second one-way valve are in close state, so that the first chamber Viscous medium can not be exchanged between room and second chamber;
Load be greater than fusing critical value when, first check valve or second one-way valve are in the open state, viscous medium by High-pressure chamber moves to low-pressure chamber;
First check valve, second one-way valve include valve pocket, core, compressed spring and adjust screw, are set on the valve pocket There is stepped throughhole, the core is installed between compressed spring and the stepped part of stepped throughhole, described compressed spring one end Core is held out against, the other end is connected with screw is adjusted;The first through hole passed through for viscous medium is offered on the adjusting screw;
The stepped throughhole includes sequentially connected diameter holes, middle hole and large diameter hole, is equipped in the middle hole and ball The core mounting portion of core cooperation, the core mounting portion are equipped with the axial hole being connected to diameter holes and the cone being connected to large diameter hole Shape hole, the core are connected to the inner wall of the tapered hole by compressed spring;
Adjusting plug-in unit is bolted in the diameter holes, the plug-in unit that adjusts is equipped with the second through-hole passed through for viscous medium.
2. the viscous damper according to claim 1 with hydraulic fuse function, which is characterized in that the adjusting screw It is bolted in the large diameter hole, the compressed spring is sheathed on the adjusting screw, and the depth that is spirally connected for adjusting screw is Precompression needed for guaranteeing compressed spring is the depth that is spirally connected of standard selection.
3. the viscous damper according to claim 2 with hydraulic fuse function, which is characterized in that the compressed spring Sliding sleeve is equipped between the core, the center of the sliding sleeve end face is equipped with the protrusion that cooperation is pushed against with core, institute It states sliding sleeve and is equipped with the third through-hole passed through for viscous medium.
4. according to claim 1 to the viscous damper described in 3 any one with hydraulic fuse function, which is characterized in that The both ends of the stepped throughhole are equipped with circlip.
5. according to claim 1 to the viscous damper described in 3 any one with hydraulic fuse function, which is characterized in that The both ends of the cylinder body are equipped with end cover, and the end cover is fixed by dead ring, the end cover and fastening Ring is equipped with the axial hole for wearing the piston rod.
6. the viscous damper according to claim 5 with hydraulic fuse function, which is characterized in that the piston rod One end is fixedly connected with an active connection, and the other end of the piston rod is slidedly arranged on the axial hole of the end cover and dead ring It is interior;Piston rod is equipped with fixedly connected part far from the side of active connection, and the fixedly connected part is installed on the cylinder body.
7. the viscous damper according to claim 6 with hydraulic fuse function, which is characterized in that described to be fixedly connected Part is installed on the cylinder body by link block, and the link block is equipped with the avoid holes moved axially for piston rod.
CN201610121878.XA 2016-03-03 2016-03-03 A kind of viscous damper with hydraulic fuse function CN107152486B (en)

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CN107152486B true CN107152486B (en) 2019-10-18

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Publication number Priority date Publication date Assignee Title
CN108457168B (en) * 2018-01-15 2019-11-12 东南大学 A kind of self-centering Effects of Viscous Fluid Damper
CN109027098B (en) * 2018-08-31 2020-05-12 温州临界科技有限公司 Hydraulic positioning buffer
CN109404477A (en) * 2018-11-21 2019-03-01 沈阳建筑大学 A kind of SMA spring-STF viscous damper
CN109899579B (en) * 2019-04-02 2020-10-09 中国原子能科学研究院 Supporting device for fast reactor sodium valve
CN110924288A (en) * 2019-11-13 2020-03-27 株洲时代新材料科技股份有限公司 Viscous damper
CN111022554A (en) * 2019-12-19 2020-04-17 湖南联诚轨道装备有限公司 Thread damping piston

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