CN207569137U - A kind of novel rod-type viscous damper - Google Patents
A kind of novel rod-type viscous damper Download PDFInfo
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- CN207569137U CN207569137U CN201721738792.8U CN201721738792U CN207569137U CN 207569137 U CN207569137 U CN 207569137U CN 201721738792 U CN201721738792 U CN 201721738792U CN 207569137 U CN207569137 U CN 207569137U
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Abstract
The utility model discloses a kind of novel rod-type viscous dampers, including cylinder barrel, piston is equipped in the cylinder barrel, the piston is equipped with several damping holes, the piston is connected with piston rod, the piston rod includes piston outer bar and piston interior bar, the piston interior bar is connected with the piston, the piston outer bar is set in the piston interior bar, the side wall of the piston outer bar is connected by shear connector with the side wall of the piston interior bar, simultaneously, one end of the piston outer bar is connected by elastic component with the end of piston interior bar, the other end is connected with earrings.The present apparatus meets design requirement under normal use using the connection of the inside and outside bar of piston and shear connector, simultaneously after shear connector fracture, suffered seismic energy is consumed using the displacement of elastic component, it connects with damper to increase the rigidity of bridge pier using elastic component, reduce the damage of bridge pier and agent structure, in addition, elastic component is wrapped in piston interior bar, the unstability of elastic component can be also avoided.
Description
Technical field
The utility model is related to a kind of damper, more particularly to a kind of novel rod-type viscous damper.
Background technology
Rod-type viscous damper is generally made of piston, oil cylinder and damping hole, is to utilize pressure official post oil stream before and after piston
Overdamp hole generates a kind of damping device of damping force.Attached drawing 1 is most typical rod-type damper with viscosity, including piston bore
7, piston 3 is equipped in cylinder barrel 7, cylinder barrel interior room is divided into first piston chamber 4 and second piston chamber 5, two pistons by the piston 3
Intracavitary is separately filled with compressible silicone oil, and piston rod 2 is connected on piston 3, and the other end of piston rod 2 is connected with earrings 1.Institute
It states and sealing device 6 is additionally provided in cylinder barrel 7, be sealed between the cylinder barrel 7, sealing device 6, piston rod 2 by sealing ring 8.
Relative to other energy-consuming shock absorbers, rod-type damper with viscosity has the operation principle of oneself：When by external force
When, external force can push piston rod 2 and piston 3 to be moved in cylinder barrel 7, and piston 3 pushes first piston chamber 4 (or second piston chamber 5)
Resisting medium, resisting medium is made to pass through damping hole, to generate frictional damping, and then the seismic energy being subject to that dissipates.
But rod-type damper with viscosity also has the shortcomings that corresponding, in railroad bridge structure, particularly bridge pier structure,
When seismic energy is excessive, the instantaneous geological process that damper is subject to is excessive, is easy to cause and is connected with rod-type damper with viscosity
Bridge pier be damaged or the insufficient strength of itself cause itself destroy, that is, show that its damping performance is poor, to agent structure
Degree of protection it is inadequate.
Invention content
The purpose of the utility model is to overcome the rod-type damper with viscosity damping performance in the presence of the prior art is poor,
The deficiency inadequate to the degree of protection of agent structure provides a kind of novel rod-type viscous damper.
In order to achieve the above-mentioned object of the invention, the utility model provides following technical scheme：
A kind of novel rod-type viscous damper including cylinder barrel, is equipped with piston in the cylinder barrel, the piston is equipped with several
A damping hole, the piston are connected with piston rod, and the piston rod includes piston outer bar and piston interior bar, the piston interior bar with
The piston is connected, and the piston outer bar is set in the piston interior bar, and the side wall of the piston outer bar passes through shear connector
It is connected with the side wall of the piston interior bar, meanwhile, one end of the piston outer bar passes through elastic component and the end of piston interior bar
It is connected, the other end is connected with earrings.
Under normal usage, outside the piston interior bar of novel rod-type viscous damper described in the utility model and piston
Bar is connected as overall structure by shear connector, once being pressurized, then flows liquid through damping hole by pressure differential before and after piston to produce
Raw damping force.Further, when by larger seismic force effects, piston interior bar and piston outer bar described in the utility model
Between shear connector cut, relative displacement occurs in piston outer bar for piston interior bar, and compressive deformation takes place in elastic component, into
One step consumes seismic energy.
Novel rod-type viscous damper described in the utility model is met using the connection of the inside and outside bar of piston and shear connector
Design requirement under normal use, while after shear connector fracture, can be consumed using the displacement of elastic component suffered
Seismic energy, connect with damper to increase the rigidity of bridge pier using elastic component, reduce the damage of bridge pier and agent structure.Separately
Outside, elastic component is wrapped in piston interior bar, can also avoid the unstability of elastic component.
Preferably, at least two mounting surfaces are equipped between the piston outer bar and piston interior bar, each mounting surface is described in
Piston interior bar is circumferentially symmetrically installed with the 2-6 shear connectors, ensures that there is enough overlap joints to grow for piston outer bar and piston interior bar
Degree.
Preferably, the shearing strength of the shear connector is 100MPa-300MPa.
Preferably, the shear connector is screw structural, and end face is equipped with cross groove, is easily installed.
Preferably, the elastic component is resetting spring, and the spring is welded to connect with the piston outer bar, and the spring
It is welded to connect with piston interior bar.
Preferably, the length of the spring is 100mm-300mm, for the compressive deformation of spring.
Preferably, the spring is stainless steel, and maximum allowable shear stress is 500MPa-700MPa.
Preferably, the piston interior bar is round tube structure, and the piston outer bar is rod structure.
Preferably, clearance fit between the piston outer bar and piston interior bar, the gap of the two is 2mm-4mm, convenient for cutting
After power key is cut, piston interior bar and piston outer bar generate relative displacement, and compressed spring, further consume seismic energy.
Preferably, sealing device is additionally provided in the cylinder barrel, increases damper leak integrity, extend damper uses the longevity
Life.
Preferably, it is sealed between the cylinder barrel, sealing device, piston rod by sealing ring, increases the anti-leakage of damper
Ability extends the service life of damper.
Preferably, the synthetic material that the material of the sealing ring is polytetrafluoroethylene (PTFE), polyurethane, nitrile rubber are formed.
Preferably, the damping hole is circumferentially symmetrical arranged along the piston.
Compared with prior art, the beneficial effects of the utility model：
Novel rod-type viscous damper described in the utility model is met using the connection of the inside and outside bar of piston and shear connector
Design requirement under normal use, while after shear connector fracture, can be consumed using the displacement of elastic component suffered
Seismic energy, connect with damper to increase the rigidity of bridge pier using elastic component, reduce the damage of bridge pier and agent structure.Separately
Outside, elastic component is wrapped in piston interior bar, can also avoid the unstability of elastic component.
Description of the drawings：
Fig. 1 is the structure diagram of existing common rod-type viscous damper.
Label in wherein Fig. 1：1- earrings, 2- piston rods, 3- pistons, 4- first piston chambers, 5- second piston chambers, 6- are close
Seal apparatus, 7- cylinder barrels, 8- sealing rings.
Fig. 2 is the structure diagram of novel rod-type viscous damper described in the utility model.
Fig. 3 is the partial enlarged view of piston rod described in the utility model.
Fig. 4 is the structure diagram of shear connector described in the utility model.
Fig. 5 is Path of Force Transfer figure of the novel rod-type viscous damper described in the utility model in normal use.
Fig. 6 is Path of Force Transfer figure of the novel rod-type viscous damper described in the utility model in coming earthquake.
Fig. 7 is Path of Force Transfer figure of the novel rod-type viscous damper described in the utility model in seismic process.
It is marked in wherein Fig. 2-Fig. 7：1- earrings, 2- piston rods, 21- piston outer bars, 22- piston interior bars, 23- springs, 24-
Shear connector, 3- pistons, 4- first piston chambers, 5- second piston chambers, 6- sealing devices, 7- cylinder barrels, 8- sealing rings.
Specific embodiment
The utility model is described in further detail with reference to test example and specific embodiment.It but should not be by this
The range for being interpreted as the above-mentioned theme of the utility model is only limitted to following embodiment, all to be realized based on the utility model content
Technology belongs to the scope of the utility model.
As shown in Fig. 2-Fig. 3, a kind of novel rod-type viscous damper including cylinder barrel 7, is equipped with piston 3 in the cylinder barrel 7,
7 interior room of cylinder barrel is divided into first piston chamber 4 and second piston chamber 5 by the piston 3, several resistances are arranged on the piston 3
Buddhist nun hole.The piston 3 is connected with piston rod 2, and the piston rod 2 includes piston outer bar 21 and piston interior bar 22, in the piston
Bar 22 is round tube structure, and piston interior bar 22 is connected with the piston 3；The piston outer bar 21 is rod structure, outside piston
Bar 21 is set in the piston interior bar 22, and the side wall of the piston outer bar 21 passes through shear connector 24 and the piston interior bar 22
Side wall is connected, meanwhile, one end of piston outer bar 21 is connected by spring 23 with the end of piston interior bar 22, the other end and ear
Ring 1 is connected.
As shown in figure 4, set between the piston outer bar 21 and piston interior bar 22 there are two mounting surface, each mounting surface is along institute
State that piston interior bar 22 is circumferential to be symmetrically installed that there are four the shear connectors 24.The shear connector 24 uses Q345 steel, and shearing strength is
180MPa, and resistance to corrosion is strong, machinability is good.The shear connector 24 is screw structural, and end face is recessed equipped with cross
Slot is easily installed.
The spring 23 be stainless steel, and maximum allowable shear stress be 500MPa-700MPa, the spring 23 with
The piston outer bar 21 is welded to connect, and the spring 23 is welded to connect with piston interior bar 22, and the weld seam at both ends is secured, to keep away
Exempt to form weak link.The length of the spring 23 is 100mm-300mm, for the compressive deformation of spring.Since interior packet is in work
It fills in interior bar 22, therefore the destabilization problems of spring 23 are resolved, the additional imparting bridge pier of rigidity of spring 23 can be reduced bridge
The damage of pier due to the presence of spring 23, sacrifices its displacement and carrys out the rigidity of approximate increase bridge pier, and then reduce the damage of bridge pier.
Clearance fit between the piston outer bar 21 and piston interior bar 22, the gap of the two is 2mm-4mm, convenient for shear connector
After 24 cut, piston interior bar 22 and piston outer bar 21 generate relative displacement, and compressed spring 23, further consume seismic energy.
Sealing device 6 is additionally provided in the cylinder barrel 7, passes through sealing ring 8 between the cylinder barrel 7, sealing device 6, piston rod 2
It is sealed, increases damper leak integrity, extend the service life of damper.
As shown in figure 5, in the condition of normal use, by taking compression acts on as an example, after left end stress, pass through piston outer bar 21
Power is passed into piston interior bar 22 by shear connector 24, piston 3 is slowly pushed later, positioned at the compressible silicone oil of second piston chamber 5
It is flowed in first piston chamber 4 by damping hole, while generates damping force, meet normal force request.
As shown in fig. 6, in coming earthquake, after usually seven grades or more of coming earthquake, since main structure body generates
Larger geological process power, excessive so as to cause the suffered shearing of shear connector 24, shear connector 24 is cut up therewith, the inside and outside bar of piston
Between start generate relative displacement.
As shown in fig. 7, under geological process, after shear connector 24 is cut, damper piston 3 continues to be compressed, spring
23 start to be deformed, and are equivalent to and start to add additional rigidity to bridge pier, to seismic energy into row buffering, reduce the damage of bridge pier
Wound.
Due to employing the series model of spring and damper in the present apparatus, dissipated suffered ground using the displacement of spring
Energy is shaken, the geological process power that bridge pier is directly subject to is reduced, so as to reduce the damage of bridge pier and damper in itself.
Above example is only to illustrate the utility model and not limits the described technical solution of the utility model, to the greatest extent
Pipe this specification has been carried out being described in detail with reference to above-mentioned each embodiment to the utility model, but the utility model not office
It is limited to above-mentioned specific embodiment, therefore any modifies to the utility model or equivalent replacement；And all do not depart from practicality
The technical solution of novel spirit and scope and its improvement should all be covered in the right of the utility model.
Claims (10)
1. a kind of novel rod-type viscous damper including cylinder barrel (7), is equipped with piston (3), the piston (3) in the cylinder barrel (7)
Several damping holes are equipped with, the piston (3) is connected with piston rod (2), which is characterized in that the piston rod (2) is including work
Bar (21) and piston interior bar (22) beyond the Great Wall, the piston interior bar (22) are connected with the piston (3), the piston outer bar (21)
It is set in the piston interior bar (22), the side wall of the piston outer bar (21) passes through shear connector (24) and the piston interior bar
(22) side wall is connected, meanwhile, one end of the piston outer bar (21) passes through elastic component and the end phase of piston interior bar (22)
Connection, the other end are connected with earrings (1).
2. a kind of novel rod-type viscous damper according to claim 1, which is characterized in that the piston outer bar (21) and
At least two mounting surfaces are equipped between piston interior bar (22), each mounting surface is circumferentially symmetrically installed with along the piston interior bar (22)
The 2-6 shear connectors (24).
3. a kind of novel rod-type viscous damper according to claim 1, which is characterized in that the shear connector (24) resists
Intensity is cut as 100MPa-300MPa.
4. a kind of novel rod-type viscous damper according to claim 1, which is characterized in that the shear connector (24) is spiral shell
Silk structure, and end face is equipped with cross groove.
5. a kind of novel rod-type viscous damper according to claim 1, which is characterized in that the elastic component is resets bullet
Spring (23), the spring (23) are welded to connect with the piston outer bar (21), and the spring (23) is welded with piston interior bar (22)
It connects in succession.
A kind of 6. novel rod-type viscous damper according to claim 5, which is characterized in that the length of the spring (23)
For 100mm-300mm.
7. a kind of novel rod-type viscous damper according to claim 5, which is characterized in that the spring (23) is stainless
Steel material, and maximum allowable shear stress is 500MPa-700MPa.
8. according to a kind of any novel rod-type viscous dampers of claim 1-7, which is characterized in that the piston interior bar
(22) it is round tube structure, the piston outer bar (21) is rod structure.
9. according to a kind of any novel rod-type viscous dampers of claim 1-7, which is characterized in that the cylinder barrel (7)
Inside it is additionally provided with sealing device (6).
10. according to a kind of any novel rod-type viscous dampers of claim 1-7, which is characterized in that the damping hole
It is circumferentially symmetrical arranged along the piston (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738792.8U CN207569137U (en) | 2017-12-13 | 2017-12-13 | A kind of novel rod-type viscous damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721738792.8U CN207569137U (en) | 2017-12-13 | 2017-12-13 | A kind of novel rod-type viscous damper |
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| Publication Number | Publication Date |
|---|---|
| CN207569137U true CN207569137U (en) | 2018-07-03 |
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ID=62686909
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721738792.8U Active CN207569137U (en) | 2017-12-13 | 2017-12-13 | A kind of novel rod-type viscous damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906160A (en) * | 2017-12-13 | 2018-04-13 | 中铁二院工程集团有限责任公司 | A kind of novel rod-type viscous damper |
-
2017
- 2017-12-13 CN CN201721738792.8U patent/CN207569137U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906160A (en) * | 2017-12-13 | 2018-04-13 | 中铁二院工程集团有限责任公司 | A kind of novel rod-type viscous damper |
| CN107906160B (en) * | 2017-12-13 | 2023-09-08 | 中铁二院工程集团有限责任公司 | Novel rod-type viscous damper |
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