CN204921827U - Speed displacement twin -lock voltage limiting formula viscous damper - Google Patents
Speed displacement twin -lock voltage limiting formula viscous damper Download PDFInfo
- Publication number
- CN204921827U CN204921827U CN201520717782.0U CN201520717782U CN204921827U CN 204921827 U CN204921827 U CN 204921827U CN 201520717782 U CN201520717782 U CN 201520717782U CN 204921827 U CN204921827 U CN 204921827U
- Authority
- CN
- China
- Prior art keywords
- speed
- pressure limiting
- hole
- piston
- position limited
- 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.)
- Active
Links
Landscapes
- Fluid-Damping Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model discloses a speed displacement twin -lock voltage limiting formula viscous damper. The utility model discloses a technical essential is, on the left and right terminal surface of piston respectively even processing have two voltage limiting holes and two spacing holes of speed limit, the spacing pore pair of speed limit on voltage limiting hole on the left end face and the right -hand member face should and through piston orifice intercommunication, voltage limiting pore pair on the spacing kong zeyu right -hand member face of speed limit on the left end face should and through piston orifice intercommunication, be equipped with the voltage limiting nut on the outer port in voltage limiting hole, establish the finite pressure valve core on the interior terminal surface in voltage limiting hole, be equipped with the voltage limiting spring between voltage limiting nut and the voltage limiting case, stop nut and outer stop nut in being equipped with on the outer port in the spacing hole of speed limit, interior stop nut and outer stop nut endotheca are equipped with the bottom plate center and are equipped with the spacing case of speed limit, are equipped with the spacing spring of speed limit between the interior terminal surface of the spacing case of speed limit and the spacing downthehole terminal surface of speed limit. The utility model discloses simple structure, simple to operate, power consumption ability that can full play viscous damper.
Description
Technical field
The utility model belongs to the passive energy dissipation technical field of building, bridge structure, is specifically related to a kind of speed displacement twin-lock limited pressure viscous damper.
Background technique
The large scale structure such as tall building and Loads of Long-span Bridges can occur significantly to vibrate under earthquake or wind action, and significantly vibrating of structure will cause destruction or the total collapse of its partial component.In order to reduce earthquake or wind to the impact of structure, viscous damper is widely used in building structure and bridge structure carries out passive energy dissipation.The structure of viscous damper generally adopts shearing valve type, as shown in Figure 1.In Fig. 1,31 is cylinder body, and 32 is piston, and 33 is piston rod, and 34 is throttle orifice, and 35 is viscous fluids.
The effect of damper vibration damping is put to death in its energy dissipation capacity W, in a vibrational period T of structure:
W＝2Fx(1)
Wherein F is average damping force, and x is the stroke of structural vibration one-period internal damping device piston rod.In a stroke of damper rod, the size of damping force F with piston movement speed variation relation can approximate representation be:
F＝cv
α(2)
Wherein c is damper coefficient of viscosity, relevant with the ratio that size and the piston cross-section of throttle orifice on piston amass; V is the relative velocity of piston rod and damper movement of cylinder block, and Rate Index α (0< α≤1) is an important performance indexes of viscous damper, and α is less, and damping force is more convenient to control.
For antidetonation under earthquake, wind effect of structure or bridge or vibration damping, mainly at present viscous damper and other shock insulation (vibration isolation) measure is adopted jointly to complete.Such as between bridge main beam and bridge pier, viscous damper is installed, effectively can suppresses the vibration of bridge under high wind effect, general earthquake can be suppressed the destruction of bridge simultaneously.But under Super Typhoon or action of strong earthquake, the power consumption deficiency of damper may cause girder vibration displacement excessive and collide or landing with bridge pier, causes heavy damage or the damage of bridge.Tall building generally adopts vibration isolating suspension and viscous damper to combine to carry out the vibration damping subtracted under shock insulation and high wind effect of earthquake, and under Super Typhoon or action of strong earthquake, structural column the excessive changing of the relative positions may occur and causes caving in of bed rearrangement building.Adopt damper shown in Fig. 1, when excessive vibration (vibrations) occur structure, rigid collision will occur between piston and piston/cylinder, thus cause damper to destroy, bridge or building structure finally may be caused to destroy.
Viscous damper is widely applied in Longspan Bridge and super-high building structure, critical effect is played to structural vibration passive energy dissipation, but α is larger in existing viscous damper damping force F, cause damper damping force F in normal work stage change just greatly, be unfavorable for giving full play to of its energy dissipation capacity.Although there is pressure regulating type viscous damper at present, by arranging fluid passage and pressure limiting controlling device in piston rod, reduce α value in viscous damper damping force F, but this damper structure complex forms arranging fluid passage and pressure limiting controlling device in piston rod, makes and installs difficulty.
Summary of the invention
The purpose of this utility model is to solve existing viscous damper when excessive vibration (vibrations) occur structure, the problem of rigid collision will be there is between piston and piston/cylinder, there is provided one can prevent from, between piston and piston/cylinder, rigid collision occurs, and structure is simple, easy for installation, the speed displacement twin-lock limited pressure viscous damper that can give full play to viscous damper energy dissipation capacity.
The purpose of this utility model realizes by the following technical solutions: this speed displacement twin-lock limited pressure viscous damper, comprises the viscous fluid in cylinder body, piston, piston rod, cylinder body; The urceolus two ends of described cylinder body are provided with end cap, sealing seat from outside to inside, are nested with seal ring outside the piston rod in sealing seat; One end of piston rod is closed in end cap, and the other end stretches out end cap; Piston is fixed by the shaft shoulder on piston rod and gland nut; The left and right end face of described piston is evenly processed with respectively two pressure limiting holes and two speed and position limited holes, pressure limiting hole on left side is corresponding with the speed and position limited hole on right side and be communicated with by throttling piston hole, and the speed and position limited hole on left side is then corresponding with the pressure limiting hole on right side and be communicated with by throttling piston hole; The external port in described pressure limiting hole is provided with the pressure limiting nut of band throttle orifice, the interior edge face in pressure limiting hole be provided with center with throttle orifice, to offset with throttling piston hole that hold be the pressure limiting spool of spline shape, be provided with pressure limiting spring between pressure limiting nut and pressure limiting spool; The external port in described speed and position limited hole is provided with successively interior stop nut and outer stop nut, the spill speed and position limited spool that base plate center is provided with throttle orifice, sidewall is provided with speed and position limited groove is set with in interior stop nut and outer stop nut, the spill mouth of speed and position limited spool, towards speed and position limited hole interior edge face, is provided with speed and position limited spring between the spill mouth interior edge face of speed and position limited spool and speed and position limited hole interior edge face.
Concrete, described pressure limiting nut is a circular block shape component, its center and be above evenly provided with totally five throttle orifices.
Concrete, described pressure limiting spool is a convex frustoconic shape component, and its center is provided with throttle orifice, and its base diameter is greater than throttling piston bore dia, and bottom it, surrounding extends to four in criss-cross spline.
Concrete, described speed and position limited spool is a groove type cylindrical structural member, and its base plate center is provided with throttle orifice, its cylinder side wall is evenly provided with the speed and position limited groove of four axis.
The utility model for existing viscous damper when there are excessive vibration (vibrations) in structure, the problem of rigid collision will be there is between piston and piston/cylinder, adopt the mode that multiple unidirectional speed and position limited valve and stage clip are set on piston, prevent from, between piston and piston/cylinder, rigid collision occurs.Its principle is (for fluid pressurized on the right side of piston):
Adopt the position of stage clip and stop nut acting in conjunction setting speed and position limited spool, arrange throttling groove and speed and position limited groove at speed and position limited spool sidewall, base plate arranges throttle orifice.When damper urceolus and piston generation relative movement make right side fluid pressurized, fluid by speed and position limited spool sidewall throttling groove and base plate throttle orifice, wash pressure limiting spool open, flowed on the left of piston by the throttle orifice on pressure limiting nut.By the pressure difference regulating the size of speed and position limited throttling spool groove and throttle orifice can change speed and position limited spool two side liquid, simultaneously by pressure that the stiffness change speed and position limited spool of stage clip can bear, the effective cooperation of the two, make when damper urceolus exceedes limit value with the speed (corresponding with structural vibration speed) of piston generation relative movement, speed and position limited spool enters in piston hole, force fluid can only by the slight gap of speed and position limited spool base plate throttle orifice and outer stop nut and speed and position limited valve core chamber, because the slight gap size of base plate throttle orifice aperture and outer stop nut and speed and position limited valve core chamber is little, piston pressure at both sides difference is increased rapidly, damper damping force improves rapidly, prevent damper generation rigid collision.When there is excessive distortion in damper, first speed and position limited spool touches with damper end part seal seated connection, compression speed and position limited spool enters in piston, force fluid can only by slight gap, the speed and position limited spool sidewall speed and position limited groove of outer stop nut and speed and position limited valve core chamber, wash pressure limiting spool open, flow on the left of piston by the throttle orifice on pressure limiting nut, thus it is the same with the principle of speed limit, rapid increase damping force, avoids damper generation rigid collision.Regulate speed and position limited spool sidewall throttling groove and base plate orifice dimensions, stage clip rigidity and length, can the maximum speed limit of damping adjusting device, the impact coefficient (ratio of the maximum impact force after speed and position limited and maximum damping force when normally working as required, the excessive damage easily causing damper and structure of impact coefficient, the too small rigid collision that damper may be caused equally final).When left side fluid pressurized, principle is the same.
Piston fluid passage arranges pressure limiting nut, pressure limiting spool, pressure limiting spring, defines fluid pressure limiting internal flow channel.Wherein pressure limiting spool is spline tee section, and throttling piston hole is blocked in the limited pressing spring extruding of pressure limiting spool.Fluid pressurized on the right side of piston, fluid pressure differential promotes pressure limiting spool and moves to left, and fluid is by pressure limiting spool and throttle orifice gap, and the clearance groove through spline position flows into left side.By regulating rigidity and the initial length of left side stage clip, pressure reduction when regulating fluid flowing can be reached, and keep it basicly stable, thus reaching damping adjusting power, and reducing the object of the α value in damping force F, improving the energy dissipation capacity of damper thus.
Therefore, the utility model leads to and can effectively prevent viscous damper when excessive vibration (vibrations) occur structure, the problem of rigid collision is there is between piston and piston/cylinder, simultaneously, energy free adjusting damping force, α value in effective reduction damping force F, improves the energy dissipation capacity of damper thus.
Accompanying drawing explanation
Fig. 1 is the structural representation of the viscous damper of existing employing shearing valve type.
Fig. 2 is the structural representation of the viscous damper of the utility model embodiment.
Fig. 3 is A-A cross section view in Fig. 2.
Fig. 4 is the cross sectional view of pressure limiting nut in Fig. 2.
Fig. 5 is the plan view of pressure limiting spool in Fig. 2.
Fig. 6 is the D-D cross section view of Fig. 5.
Fig. 7 is the longitudinal section view of speed and position limited spool in Fig. 2.
Fig. 8 is the C-C cross section view of Fig. 5.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
See Fig. 1, Fig. 2, the viscous damper of the present embodiment comprises the viscous fluid 5 in cylinder body, piston 20, piston rod 18, cylinder body; Urceolus 4 left end of cylinder body is provided with left end cap 1, left sealing seat 2 from outside to inside, the left seal ring 3 in left sealing seat, and urceolus 4 right-hand member of cylinder body is provided with right end cap 17, right sealing seat 16 from outside to inside, the right seal ring 23 in right sealing seat; The left end of piston rod 18 is closed in left end cap 1, and right-hand member stretches out right end cap 17; Piston 20 is fixed by the shaft shoulder 19 on piston rod 18 and gland nut 21.From Fig. 1, Fig. 2, the left and right end face of piston 20 is evenly processed with respectively two pressure limiting holes 9 and two speed and position limited holes 11, pressure limiting hole 9 on left side is corresponding with the speed and position limited hole 11 on right side and be communicated with by throttling piston hole 10, and 11, the speed and position limited hole on left side is corresponding with the pressure limiting hole 9 on right side and be communicated with by throttling piston hole 10.The external port in pressure limiting hole 9 is provided with pressure limiting nut 6, and see Fig. 4, pressure limiting nut 6 is a circular block shape component, its center and be above evenly provided with totally five throttle orifices.The interior edge face in pressure limiting hole 9 is provided with pressure limiting spool 8, and see Fig. 5, Fig. 6, pressure limiting spool 8 is a convex frustoconic shape component, and its center is provided with throttle orifice, and its base diameter is greater than throttling piston bore dia, and bottom it, surrounding extends to four in criss-cross spline.Pressure limiting spring 7 is provided with between pressure limiting nut 6 and pressure limiting spool 8.The external port in speed and position limited hole 11 is provided with successively interior stop nut 12 and outer stop nut 13, speed and position limited spool 15 is set with in interior stop nut 12 and outer stop nut 13, see Fig. 7, Fig. 8, speed and position limited spool 15 is a groove type cylindrical structural member, its base plate center is provided with throttle orifice, its cylinder side wall is evenly provided with the speed and position limited groove 22 of four axis, the spill mouth of speed and position limited spool 15, towards the interior edge face in speed and position limited hole 11, is provided with speed and position limited spring 14 between the spill mouth interior edge face of speed and position limited spool 15 and speed and position limited hole 11 interior edge face.
Known from the above description, the damper of the present embodiment forms damper exocoel by piston 20, piston rod 18, left and right end cap, urceolus 4 etc.; Piston 20 has four hole shapes fluidly passage; Each piston hole is divided into three parts according to different pore size, and what median pore radius was minimum is throttling piston hole 10, and both sides are respectively pressure limiting hole 9, speed and position limited hole 11; Speed and position limited spool 15 and sidewall speed and position limited groove 22 thereof and top orifices, speed and position limited spring 14, interior stop nut 12, outer stop nut 13 form speed and position limited controlling device; Pressure limiting spool 8, pressure limiting spring 7, throttling piston hole 10, pressure limiting nut 6 form pressure limiting controlling device.
The assembly process of the present embodiment is as follows:
In pressure limiting hole, one end, throttling piston hole, fill in pressure limiting spool, pressure limiting spring, pressure limiting nut and piston pressure limiting hole are threaded connection.
In the other end speed and position limited hole, throttling piston hole, fill in speed and position limited spring, speed and position limited valve opening end and interior stop nut are threaded connection, inwardly, press-in speed and position limited valve, connects speed and position limited aperture by screw thread by outer stop nut to opening.
Install pressure limiting and speed and position limited device at another three throttling piston holes place in an identical manner, wherein have two place's pressure limiting devices on the left of throttling piston hole, another two place's pressure limiting devices are on the right side of throttling piston hole.
Piston rod is penetrated piston, by the piston rod shaft shoulder and gland nut, piston is fixed.
First be pressed into left sealing seat, left seal ring at urceolus left end, then by left end cap with urceolus with being threaded; By piston rod and mounting parts be pressed into from damper urceolus right-hand member; In right-hand member piston rod, add viscous fluid again, be pressed into right sealing seat, right seal ring, then with right end cap with damper urceolus with being threaded.
Known from the above description, damper structure of the present utility model is simple, easy for installation.
Claims (4)
1. a speed displacement twin-lock limited pressure viscous damper, comprises the viscous fluid in cylinder body, piston, piston rod, cylinder body; The urceolus two ends of described cylinder body are provided with end cap, sealing seat from outside to inside, are nested with seal ring outside the piston rod in sealing seat; One end of piston rod is closed in end cap, and the other end stretches out end cap; Piston is fixed by the shaft shoulder on piston rod and gland nut; It is characterized in that: the left and right end face of described piston is evenly processed with respectively two pressure limiting holes and two speed and position limited holes, pressure limiting hole on left side is corresponding with the speed and position limited hole on right side and be communicated with by throttling piston hole, and the speed and position limited hole on left side is then corresponding with the pressure limiting hole on right side and be communicated with by throttling piston hole; The external port in described pressure limiting hole is provided with the pressure limiting nut of band throttle orifice, the interior edge face in pressure limiting hole be provided with center with throttle orifice, to offset with throttling piston hole that hold be the pressure limiting spool of spline shape, be provided with pressure limiting spring between pressure limiting nut and pressure limiting spool; The external port in described speed and position limited hole is provided with successively interior stop nut and outer stop nut, the spill speed and position limited spool that base plate center is provided with throttle orifice, sidewall is provided with speed and position limited groove is set with in interior stop nut and outer stop nut, the spill mouth of speed and position limited spool, towards speed and position limited hole interior edge face, is provided with speed and position limited spring between the spill mouth interior edge face of speed and position limited spool and speed and position limited hole interior edge face.
2. speed displacement twin-lock limited pressure viscous damper according to claim 1, is characterized in that: described pressure limiting nut is a circular block shape component, its center and be above evenly provided with totally five throttle orifices.
3. speed displacement twin-lock limited pressure viscous damper according to claim 1, it is characterized in that: described pressure limiting spool is a convex frustoconic shape component, its center is provided with throttle orifice, and its base diameter is greater than throttling piston bore dia, and bottom it, surrounding extends to four in criss-cross spline.
4. speed displacement twin-lock limited pressure viscous damper according to claim 1, it is characterized in that: described speed and position limited spool is a groove type cylindrical structural member, its base plate center is provided with throttle orifice, its cylinder side wall is evenly provided with the speed and position limited groove of four axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520717782.0U CN204921827U (en) | 2015-09-16 | 2015-09-16 | Speed displacement twin -lock voltage limiting formula viscous damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520717782.0U CN204921827U (en) | 2015-09-16 | 2015-09-16 | Speed displacement twin -lock voltage limiting formula viscous damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921827U true CN204921827U (en) | 2015-12-30 |
Family
ID=54970957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520717782.0U Active CN204921827U (en) | 2015-09-16 | 2015-09-16 | Speed displacement twin -lock voltage limiting formula viscous damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921827U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114513A (en) * | 2015-09-16 | 2015-12-02 | 湖南科技大学 | Speed and displacement dual-lock pressure-limiting type viscous damper |
| CN106838099A (en) * | 2017-01-06 | 2017-06-13 | 中铁大桥科学研究院有限公司 | The method for designing and damper of a kind of multi-functional viscous damper of variable element |
| CN108951948A (en) * | 2018-08-19 | 2018-12-07 | 郑州大学 | A kind of energy-consuming shear wall with dual automatic recovery ability |
-
2015
- 2015-09-16 CN CN201520717782.0U patent/CN204921827U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114513A (en) * | 2015-09-16 | 2015-12-02 | 湖南科技大学 | Speed and displacement dual-lock pressure-limiting type viscous damper |
| CN105114513B (en) * | 2015-09-16 | 2017-02-01 | 湖南科技大学 | Speed and displacement dual-lock pressure-limiting type viscous damper |
| CN106838099A (en) * | 2017-01-06 | 2017-06-13 | 中铁大桥科学研究院有限公司 | The method for designing and damper of a kind of multi-functional viscous damper of variable element |
| CN106838099B (en) * | 2017-01-06 | 2019-02-26 | 中铁大桥科学研究院有限公司 | A kind of design method and damper of the multi-functional viscous damper of variable element |
| CN108951948A (en) * | 2018-08-19 | 2018-12-07 | 郑州大学 | A kind of energy-consuming shear wall with dual automatic recovery ability |
| CN108951948B (en) * | 2018-08-19 | 2023-12-12 | 郑州大学 | Energy consumption shear wall with double self-recovery capability |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105114513B (en) | Speed and displacement dual-lock pressure-limiting type viscous damper | |
| WO2019080599A1 (en) | Anti-shock device | |
| CN104481047B (en) | The speed displacement external adjustable type viscous damper of two lock | |
| CN204282570U (en) | The external adjustable type viscous damper of speed displacement twin-lock | |
| CN204921827U (en) | Speed displacement twin -lock voltage limiting formula viscous damper | |
| CN205711702U (en) | A kind of suspension cable vibration-reducing and damping device being applicable to rope-beam coupled vibrations | |
| CN103174788B (en) | A kind of hydraulic shock absorber damping regulation structure | |
| CN101943237B (en) | Double-overflow load limiting double-stage hydraulic damper | |
| CN106015432B (en) | The stepless adjustable damper valve of built-in oil-pressure damper | |
| CN111188865B (en) | Hydraulic damper with rigidity adjusting device | |
| CN106838099B (en) | A kind of design method and damper of the multi-functional viscous damper of variable element | |
| CN103615494A (en) | Damper used for vibration reduction of pipeline | |
| CN104214264A (en) | Damping/stiffness-adjustable hydraulic damper of multidimensional vibration damping platform | |
| CN103061250B (en) | Hydraulic speed locking device for bridges | |
| CN204282198U (en) | Speed displacement twin-lock adjustable type viscous damper | |
| CN201027893Y (en) | Pressure limiting valve hydraulic damper | |
| CN104452576B (en) | Speed displacement two lock adjustable type viscous damper | |
| CN208885852U (en) | A kind of single valve piece inner wall throttle type Bidirectional damping mechanism and hydraulic shock-absorption piston | |
| CN201148591Y (en) | Locking valve of bridge hydraulic impact transfer apparatus | |
| CN107313644B (en) | Permanent magnet adjustable magnetorheological damper with large bearing capacity | |
| CN206785913U (en) | Guided bearing seat with damping regulatory function | |
| CN203066283U (en) | Pressure-limiting external regulating type viscous damper | |
| CN101943239B (en) | Single-overflow load-limit double-step hydraulic damper | |
| CN104455172A (en) | Multistage pressure-limiting adjusting hydraulic buffer | |
| CN103088934B (en) | The external adjustable type viscous damper of a kind of pressure limiting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |