CN208981114U - A kind of fluid viscous damper adding free inching gear - Google Patents
A kind of fluid viscous damper adding free inching gear Download PDFInfo
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- CN208981114U CN208981114U CN201821563946.9U CN201821563946U CN208981114U CN 208981114 U CN208981114 U CN 208981114U CN 201821563946 U CN201821563946 U CN 201821563946U CN 208981114 U CN208981114 U CN 208981114U
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- inching gear
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- sleeve
- damping device
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Abstract
The utility model discloses a kind of fluid viscous dampers for adding free inching gear, free inching gear including liquid viscous damping device and for transmitting displacement and/or from power to liquid viscous damping device, for free inching gear there are adjustable deflection on the damping direction of liquid viscous damping device, the range of deflection is Smin~Smax, for free inching gear on the damping direction of liquid viscous damping device, the relative displacement of the linked structure of fluid viscous damper is s, and s is greater than SmaxOr s is less than SminWhen, free inching gear will not be transferred to liquid viscous damping device by the displacement that its deflection is offset.The utility model is avoided that brake and traffic load generate disturbance to fluid viscous dampers, reduce the accumulated travel of fluid viscous dampers generation, can also the influence temperature deformation to damper durability take into account, the abrasion loss of damper seal is reduced, the more currently common fluid viscous dampers service life is long.
Description
Technical field
The utility model relates to a kind of damper fields, and in particular to a kind of liquid sticky resistance for adding free inching gear
Buddhist nun's device.
Background technique
Existing viscous damper is to be most widely used at present, develop and the most successfully subtract as a kind of structural defence system
Vibrating device.This point embodies especially prominent in science of bridge building field, and the application of viscous damper cushion technique greatlys improve
Bridge security deposit improves the integral power performance of current Longspan Bridge, and can play when earthquake occurs good
Good energy consumption effect.
In recent years with the application popularization of fluid linking damper, Problem of Failure gradually increases, and most important one fatal
Problem is the leakage of oil problem of damper.Do not have for Longspan Bridge since total life cycle need to be subjected to move vehicle load action
There is the damper for being only used to antidetonation on pure sense；Damper is a high pressure sealing member, under daily load action, sealing
Part will be persistently by the friction of piston rod, and the kinetic energy of Heavy metal structure switchs to the interior energy of interior media, so that damper is tired
Accumulated temperature spends height, also acts on sealing element in turn, and the effect accumulated over a long period seriously affects seal durability, that is, substantially reduces
The service life of damper.Once oil leak occurs for damper, just lacked the medium for carrying out energy conversion, i.e., it is open at one
The air that reciprocating compression flows in environment, is equivalent to not damp, damper also just loses its due effect.
Therefore, problems of the prior art are mainly:
1. how to make damper that vibration caused by driving and Train Braking Load can be good to discharge, effectively
It protects damper from the interference of daily load, greatly improves the service life of damper.
2. how to improve the bearing capacity under the non-daily load action such as earthquake of damper.
Utility model content
The purpose of utility model of the utility model is: in view of the problems of the existing technology, providing a kind of enhancing antidetonation
Ability and can greatly improve damper service life the viscous damper for adding free fine motion.
To achieve the goals above, the technical solution adopted in the utility model are as follows:
A kind of fluid viscous damper adding free inching gear, including liquid viscous damping device, further include freedom
Inching gear, the free inching gear include the cylinder body for being fixed on described liquid viscous damping device one end, are located at the cylinder
The sleeve being slidably matched on body and with it and the brake apparatus slided for limiting the sleeve relative to the cylinder body；When described
When sleeve reaches setting value relative to the sliding distance of the cylinder body, the brake apparatus will limit the sleeve continue relative to
The sliding of the cylinder body.
Fluid viscous dampers are the performances with conventional liq fluid linking damper, can be in temperature and concrete shrinkage and creep
Lower Free Transform, plays the role of oscillation damping and energy dissipating under biggish dynamic loading, and the application, can by increasing free inching gear
It avoids brake load and traffic load to generate disturbance to fluid viscous dampers well, greatly reduces fluid viscous dampers
The accumulated travel generated under daily train braking and Driving Loading, while can also temperature deformation is durable to damper
Property generate influence take into account, the abrasion loss of damper seal, more currently common liquid viscous damping will be greatly reduced
The service life of device is long.
As a preferred embodiment of the present invention, free inching gear includes sleeve, the cylinder body for being pierced by sleeve, is pierced by cylinder body
Peg type block body and connection ring for connection, sleeve be movably sheathed on outside cylinder body, one end of peg type block body is set
There is fixed stop.As a preferred embodiment of the present invention, sleeve inner is equipped with mobile block, is provided with through-hole on mobile block,
The through-hole inside dimension of mobile block is less than the outside dimension of fixed stop, and the through-hole inside dimension of mobile block is less than the outer ruler of cylinder body
Very little, mobile block is between fixed stop and cylinder body.Under dynamic load function, bridge superstructure and bridge tower or pier it
Between generate relative displacement, while connection ring and the rigid body of the connected formation of sleeve being driven to be formed by with cylinder body and peg type block body
Rigid body generates relative motion, and when the caused maximum relative displacement of vibration, mobile block is only in fixed stop and sleeve one end
It is formed by movement in cavity gap, when the caused maximum relative displacement of vibration further increases, mobile block will be pushed against
One end end of fixed stop or sleeve, if maximum relative displacement caused by structural vibration further increases, due to moving
Dynamic block has adequately pushed against one end end of fixed stop or sleeve, at this time the cylinder body one and cylinder body two of fluid viscous dampers
Generate stretching or compressive deformation.Dynamic load can show as train braking and traffic load, temperature load, earthquake load.Gu
Determining gap composed by one end end of block and sleeve can be set to a fixed value, and the size in gap subtracts according to structure
Vibration needs to be thought of as deformation caused by deformation caused by train travel and braking or temperature load or two kinds of loads
Combined effect.For the biggish service life for improving damper, combination effect generally may be considered as.
As a preferred embodiment of the present invention, cylinder body is threadedly coupled with peg type block body.
As a preferred embodiment of the present invention, the inner surface of sleeve and the outer surface of cylinder body fit closely.
As a preferred embodiment of the present invention, connection ring is fixed on one end of sleeve.
As a preferred embodiment of the present invention, free inching gear is connect by cylinder body with fluid viscous damper.Ground
Shake under load action, it is larger to generate relative displacement between bridge superstructure and bridge tower or pier, violent drive connection ring and
The rigid body of the connected formation of sleeve and sleeve and peg type block body are formed by rigid body and generate relative motion, due to fixed stop and
One end end of sleeve is formed by cavity gap and makes between bridge superstructure and bridge tower or pier much smaller than geological process
Relative shift, mobile block will push against one end end of fixed stop or sleeve during moving back and forth, and drive liquid
The cylinder body of fluid linking damper generates stretching or compressive deformation, generates the process of stretching or compressive deformation in the cylinder body of fluid linking damper
Middle earthquake energy plays the effect of vibration damping.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, by increasing free inching gear, brake load and traffic load can be avoided to fluid viscous dampers well
Disturbance is generated, the accumulation row that fluid viscous dampers generate under daily train braking and Driving Loading is greatly reduced
Journey, while the influence that temperature deformation generates damper durability can also be taken into account, it is close by damper is greatly reduced
The service life of the abrasion loss of sealing, more currently common fluid viscous dampers is long.
2, by increasing free inching gear, fixed stop or set will be pushed against during moving back and forth using mobile block
One end end of cylinder drives the cylinder body one of fluid viscous dampers and cylinder body two to generate stretching or compressive deformation consumption seismic energy
Amount, can further enhance cushioning effect of the entire damper relative to earthquake load.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the viscous damper of free fine motion is added in the utility model；
Fig. 2 is structural schematic diagram after free inching gear and damper separate；
Fig. 3 is to split the sectional view to be formed along 1-1 mark in Fig. 2；
Fig. 4 is to split the sectional view to be formed along 11-11 mark in Fig. 3；
Fig. 5 is to split the sectional view to be formed along 2-2 mark in Fig. 2；
Fig. 6 is to split the sectional view to be formed along 21-21 mark in Fig. 5；
Fig. 7 is to split the sectional view to be formed along 3-3 mark in Fig. 2；
Fig. 8 is to split the sectional view to be formed along 33-33 mark in Fig. 7；
Marked in the figure: fluid viscous dampers -10, cylinder body one -11, cylinder body two -12, cylinder body -20, sleeve -30, axis body -
40, connection ring -50, mobile block -31, fixed stop -41.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Embodiment 1
A kind of fluid viscous damper adding free inching gear, including liquid viscous damping device 10, feature exists
In further including free inching gear, free inching gear is set to one end of liquid viscous damping device 10.Fluid viscous dampers
10 be the performance with conventional liq fluid linking damper, can at temperature and concrete shrinkage and creep Free Transform, biggish
Play the role of oscillation damping and energy dissipating under dynamic loading.By increasing free inching gear, brake load and driving can be avoided well
Load generates disturbance to fluid viscous dampers, greatly reduces fluid viscous dampers in daily train braking and traffic load
The lower accumulated travel generated of effect, while the influence that temperature deformation generates damper durability can also be taken into account, it will
The abrasion loss of damper seal is greatly reduced, the service life of more currently common fluid viscous dampers is long.
Further, free inching gear includes sleeve 30, is pierced by the cylinder body 20 of sleeve 30, is pierced by the peg type of cylinder body 20
Block body and connection ring 50 for connection, sleeve 30 are movably sheathed on outside cylinder body 20, and one end of peg type block body is equipped with
Fixed stop 41.
Under dynamic load function, relative displacement, while the company of drive are generated between bridge superstructure and bridge tower or pier
It connects ring 50 and sleeve 30 connects the rigid body formed and cylinder body 20 and peg type block body is formed by rigid body and generates relative motion, when
When maximum relative displacement caused by vibration, mobile block 31 is only between fixed stop 41 and 20 one end of sleeve are formed by cavity
Movement in gap, when the caused maximum relative displacement of vibration further increases, mobile block 31 will push against fixed stop 41 or
One end end of sleeve 20, if maximum relative displacement caused by structural vibration further increases, due to mobile block 31
One end end of fixed stop 41 or sleeve 20 has adequately been pushed against, at this time the cylinder body 1 and cylinder body of fluid viscous dampers 10
2 12 generate stretching or compressive deformation.Dynamic load can show as train braking and traffic load, temperature load by dynamic load
Consider, earthquake load.
Gap composed by one end end of fixed stop 41 and sleeve 20 can be set to a fixed value, gap
Size needs to be thought of as to become caused by deformation caused by train travel and braking or temperature load according to structural vibration reduction
The combined effect of shape or two kinds of loads.For the biggish service life for improving damper, the group of the two generally may be considered as
Close effect.
Further, it is equipped with mobile block 31 inside sleeve 30, through-hole is provided on mobile block 31, mobile block 31 leads to
Hole inside dimension is less than the outside dimension of fixed stop 41, and the through-hole inside dimension of mobile block 31 is less than the outside dimension of cylinder body 20, mobile
Block 31 is between fixed stop 41 and cylinder body 20.
Further, cylinder body 20 is threadedly coupled with peg type block body.
Further, the inner surface of sleeve 30 and the outer surface of cylinder body 20 fit closely.
Further, connection ring 50 is fixed on one end of sleeve.
Further, free inching gear is connect by cylinder body 20 with fluid viscous damper 10.
Larger, the violent band of relative displacement is generated under seismic loading, between bridge superstructure and bridge tower or pier
Dynamic connection ring 50 and sleeve 30 connect the rigid body formed and sleeve 20 and peg type block body is formed by rigid body and generates opposite fortune
It is dynamic, make bridge top much smaller than geological process since one end end of fixed stop 41 and sleeve 20 is formed by cavity gap
Relative shift between structure and bridge tower or pier, mobile block 31 will be pushed against during moving back and forth fixed stop 41 or
One end end of sleeve 20 drives the cylinder body 1 of fluid viscous dampers 10 and cylinder body 2 12 to generate stretching or compressive deformation,
The earthquake energy during cylinder body 1 of fluid linking damper 10 and cylinder body 2 12 generate stretching or compressive deformation, plays
The effect of vibration damping.
The computation model for being transferred to the power of liquid viscous damping device 10 by free inching gear is as follows:
F=0 smin< s < smax
F=CVαS < sminOr s > smax
In formula, smin~smaxFor damper designs gap, s for the linked structure of the damper relative displacement.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of fluid viscous damper for adding free inching gear, including liquid viscous damping device (10), feature exists
In, it further include the free inching gear for transmitting displacement and/or power to the liquid viscous damping device (10),
There are adjustable deformations on the damping direction of the liquid viscous damping device (10) for the free inching gear
Amount, the range of deflection are as follows: smin~smax,
The free inching gear is on the damping direction of the liquid viscous damping device (10), the fluid viscous damper
The relative displacement of linked structure is s,
S is greater than smaxOr s is less than sminWhen, the free inching gear is not transferred to by the displacement that its deflection is offset described
Liquid viscous damping device (10).
2. the fluid viscous damper according to claim 1 for adding free inching gear, which is characterized in that
The free inching gear includes:
It is fixed on the cylinder body (20) of described liquid viscous damping device (10) one end；
The sleeve (30) being slidably matched on the cylinder body (20) and with the cylinder body (20)；
The brake apparatus slided for limiting the sleeve (30) relative to the cylinder body (20)；
When the sleeve (30) reaches setting value relative to the sliding distance of the cylinder body (20), the brake apparatus will be prevented
The sleeve (30) continues further to slide relative to the cylinder body (20).
3. the fluid viscous damper according to claim 2 for adding free inching gear, which is characterized in that the braking
Device includes the peg type block body being fixed on the cylinder body (20), is fixed in the sleeve (30) and is used for and the peg type
The compatible mobile block (31) of block body.
4. the fluid viscous damper according to claim 3 for adding free inching gear, which is characterized in that the pin
The shape of formula block body is ladder axis shape, including the axis body (40) that is fixed on the cylinder body (20) and is located at the axis body (40)
On fixed stop (41), the fixed stop (41) with the mobile block (31) for being adapted, to prevent the sleeve
(30) continue to slide relative to the cylinder body (20) to away from the liquid viscous damping device (10) direction.
5. the fluid viscous damper according to claim 4 for adding free inching gear, which is characterized in that the cylinder body
(20) it is threadedly coupled with the axis body (40).
6. the fluid viscous damper according to claim 5 for adding free inching gear, which is characterized in that the cylinder body
(20) end face is adapted with the mobile block (31), to prevent the sleeve (30) from continuing relative to the cylinder body (20),
It is slided to the liquid viscous damping device (10) direction.
7. adding the fluid viscous damper of free inching gear, feature according to any one of claim 2-5
It is, further includes for hinged connection ring (50), the connection ring (50) is set to the sleeve (30) and/or the liquid is glutinous
On stagnant damping unit (10).
8. the fluid viscous damper according to claim 7 for adding free inching gear, which is characterized in that the connection
Ring (50) is connected through a screw thread with the sleeve (30).
9. the fluid viscous damper according to claim 7 for adding free inching gear, which is characterized in that the connection
Ring (50) is connected through a screw thread with the liquid viscous damping device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563946.9U CN208981114U (en) | 2018-09-25 | 2018-09-25 | A kind of fluid viscous damper adding free inching gear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563946.9U CN208981114U (en) | 2018-09-25 | 2018-09-25 | A kind of fluid viscous damper adding free inching gear |
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| Publication Number | Publication Date |
|---|---|
| CN208981114U true CN208981114U (en) | 2019-06-14 |
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| CN201821563946.9U Active CN208981114U (en) | 2018-09-25 | 2018-09-25 | A kind of fluid viscous damper adding free inching gear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306659A (en) * | 2018-09-25 | 2019-02-05 | 中铁二院工程集团有限责任公司 | A kind of fluid viscous damper adding free inching gear |
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2018
- 2018-09-25 CN CN201821563946.9U patent/CN208981114U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306659A (en) * | 2018-09-25 | 2019-02-05 | 中铁二院工程集团有限责任公司 | A kind of fluid viscous damper adding free inching gear |
| CN109306659B (en) * | 2018-09-25 | 2024-01-23 | 中铁二院工程集团有限责任公司 | Liquid viscous damper additionally provided with free micro-motion device |
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