CN114033828B - Novel hydraulic type inertial damping device - Google Patents
Novel hydraulic type inertial damping device Download PDFInfo
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- CN114033828B CN114033828B CN202111346531.2A CN202111346531A CN114033828B CN 114033828 B CN114033828 B CN 114033828B CN 202111346531 A CN202111346531 A CN 202111346531A CN 114033828 B CN114033828 B CN 114033828B
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- hydraulic cylinder
- piston
- damping device
- connecting piece
- ball
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/1034—Vibration-dampers; Shock-absorbers using inertia effect of movement of a liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a novel hydraulic type inertial damping device, wherein a piston in the device is in clearance fit with a hydraulic cylinder, a through hole is formed in the piston, when the damping device works, a part of working liquid flows into a working space at the other side of the piston through a clearance between the piston and the hydraulic cylinder and the through hole on the piston, the flow of the working liquid generates nonlinear damping force with low speed index, the excessive damping force can be limited, and the device is effectively protected; the ball and the blocking ball are arranged in the spiral return pipe communicated with the hydraulic cylinder, so that the other part of liquid generates rotary motion along the spiral return pipe, the ball and the blocking ball roll reciprocally under the action of pressure difference, the amplification effect of mass can be realized by the conversion form from the linear motion of the piston to the rotary motion of the working liquid, the inertia force is improved, the coupling effect of the damping force and the inertia force in the spiral return pipe is weakened, the shock absorption performance is improved, and the working liquid adopts simethicone to increase the damping force level.
Description
Technical Field
The invention relates to the technical field of building damping control, in particular to a novel hydraulic type inertial damping device.
Background
In a hydraulic type inertial element, liquid rotationally flows in a return pipe, so that not only an inertial force is generated, but also a damping force is generated, the section of the return pipe is usually reduced to obtain a larger inertial force, but the damping force is obviously increased to cover the action of the inertial force, and the application of the hydraulic type inertial element is greatly limited by the coupling effect of the inertial force and the damping force.
Disclosure of Invention
The invention aims to provide a novel hydraulic type inertial damping device, which reduces damping force in a return pipe and reduces coupling effect of inertia and damping by filling steel balls in the return pipe to improve the inertia force.
The invention provides a novel hydraulic type inertial-energy damping device, which comprises a hydraulic cylinder, wherein a piston rod is inserted into the hydraulic cylinder, a piston is arranged in the hydraulic cylinder, the piston is fixedly connected with the piston rod, one end of the hydraulic cylinder is provided with a first connecting piece, the other end of the hydraulic cylinder is provided with a second connecting piece, the first connecting piece is fixedly connected with the piston rod, the second connecting piece is fixedly connected with the hydraulic cylinder, a spiral return pipe is sleeved outside the hydraulic cylinder, two ends of the spiral return pipe are communicated with the inside of the hydraulic cylinder, a plurality of balls are arranged in the spiral return pipe, two sides of the balls are respectively provided with a plugging ball, the diameter of the plugging ball is larger than or equal to the inner diameter of the spiral return pipe, the piston is in clearance fit with the hydraulic cylinder, and the piston is uniformly provided with a plurality of through holes along the circumference of the piston.
Furthermore, sealing sleeves are arranged at two ends of the inside of the hydraulic cylinder, fastening rings are sleeved on the outer sides of the sealing sleeves, the fastening rings are connected with the inner wall of the hydraulic cylinder in a screwed mode, the sealing sleeves are fixed in the hydraulic cylinder through the fastening rings, and the piston rods are connected with the two sealing sleeves in a plug-in mode.
Further, the diameters of the two ends of the piston rod are the same as the inner diameter of the sealing sleeve.
Further, the diameter of the ball is smaller than the inner diameter of the spiral return pipe.
Further, the liquid in the liquid cylinder is dimethyl silicone oil.
Further, a sealing groove is formed in the inner wall of the sealing sleeve, and a sealing rubber ring is fixedly installed in the sealing groove.
Further, one end of the second connecting piece, which is close to the hydraulic cylinder, is provided with a containing cavity, and the depth of the containing cavity is larger than the depth required by the maximum stroke of the piston rod.
Further, a dust cover is arranged between the first connecting piece and the hydraulic cylinder, one end of the dust cover is fixedly connected with the piston rod, and the other end of the dust cover is fixedly connected with the hydraulic cylinder.
Further, the first connecting piece and the second connecting piece are provided with mounting holes, and hanging rings are connected in the mounting holes in a threaded mode.
The invention provides a novel hydraulic type inertial damping device, which increases the flow mass in a pipe and improves the inertial force of liquid flow by arranging balls in a spiral return pipe sleeved outside a liquid cylinder and communicated with the liquid cylinder, and also reduces the damping force in the spiral return pipe, so that the coupling effect of inertia and damping is weakened and the damping performance is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the present invention;
FIG. 2 is a half cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion at A in FIG. 2;
FIG. 4 is a diagram showing the arrangement of balls and blocking balls in the spiral return pipe of the present invention;
reference numerals illustrate: 1-hydraulic cylinder, 2-spiral return pipe, 3-first connecting piece, 4-second connecting piece, 5-rings, 6-dust cover, 7-piston, 701-through hole, 8-piston rod, 9-sealing sleeve, 901-sealing groove, 10-fastening ring, 11-sealing rubber ring, 12-ball and 13-sealing ball;
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1-4, a novel hydraulic type inertial damping device comprises a hydraulic cylinder 1, sealing sleeves 9 are respectively arranged at two ends of the inner part of the hydraulic cylinder 1, a fastening ring 10 is sleeved on the outer side of each sealing sleeve 9, the fastening ring 10 is screwed with the inner wall of the hydraulic cylinder 1, the sealing sleeves 9 are fixed in the hydraulic cylinder 1 through the fastening ring 10, a piston rod 8 is inserted in the hydraulic cylinder 1, the piston rod 8 is connected with the hydraulic cylinder 1 in a plugging manner through two sealing sleeves 9, the diameters of two ends of the piston rod 8 are identical to the inner diameters of the sealing sleeves 9, sealing grooves 901 are formed in the inner wall of each sealing sleeve 9, sealing rubber rings 11 are fixedly installed in the sealing grooves 901, and liquid leakage is prevented. The hydraulic cylinder 1 is internally provided with a piston 7, the piston 7 is fixedly connected with a piston rod 8, the piston rod 8 drives the piston 7 to reciprocate, the piston 7 is in clearance fit with the hydraulic cylinder 1, and the piston 7 is uniformly provided with a plurality of through holes 701 along the circumferential direction of the piston 7, so that the piston 7 divides the interior of the hydraulic cylinder 1 into two mutually communicated working spaces.
Because the existing hydraulic inertial element generates excessive internal force during working to cause the damage of the device, the invention realizes an excessive damping output protection mechanism by utilizing the small hole torrent technology to change the velocity damping square relation through the clearance fit of the piston 7 and the hydraulic cylinder 1 and the arrangement of the through hole 701 on the piston 7. The specific principle is that F=cv n C represents a damping coefficient, v represents the speed of the piston 7, n represents an index, the size of the clearance fit between the piston 7 and the hydraulic cylinder 1 and the size of the aperture of the through hole 701 determine the value of n, and the value of n is smaller than 1 through reasonable design, so that even if the speed of the piston 7 is larger, the generated damping force is not large, thereby preventing the generation of excessive damping force, protecting the device and prolonging the service life of the damping device.
One end fixedly connected with first connecting piece 3 of piston rod 8, the one end that first connecting piece 3 was kept away from to hydraulic cylinder 1 is connected with second connecting piece 4, and first connecting piece 3 and second connecting piece 4 all are used for connecting bearing structure between the building, and under the seismic action, the floor produces easily and rocks to produce compression and tensile to this damping device. The one end that second connecting piece 4 is close to hydraulic cylinder 1 is equipped with the chamber that holds, holds the required degree of depth of chamber's degree of depth more than piston rod 8 maximum stroke, makes the tip of piston rod 8 contact all the time and can not reach the bottom surface that holds the chamber, prevents that piston rod 8 and the contact of second connecting piece 4 from making this damping device produce the damage. Be equipped with dirt proof boot 6 between first connecting piece 3 and the hydraulic cylinder 1, the one end and the piston rod 8 fixed connection of dirt proof boot 6, the other end and the hydraulic cylinder 1 fixed connection of dirt proof boot 6 protect the junction of piston rod 8 and seal cover 9. The first connecting piece 3 and the second connecting piece 4 are provided with mounting holes, the mounting holes are internally connected with hanging rings 5 in a threaded manner, the hanging rings 5 are convenient to hoist the whole damping device, and the damping device can be taken down after hoisting is completed.
The outside cover of hydraulic cylinder 1 is equipped with the spiral back flow 2 of being made by seamless steel pipe, and the both ends of spiral back flow 2 communicate with the working space at piston 7 both ends respectively, are equipped with a plurality of ball 12 in the spiral back flow 2, and the both sides of a plurality of ball 12 all are equipped with shutoff ball 13, and the ball that ball 12 adopted here, the rubber ball that shutoff ball 13 adopted, the diameter of ball 12 slightly is less than the internal diameter of spiral back flow 2, and the diameter of shutoff ball 13 slightly is greater than or equal to the internal diameter of spiral back flow 2. The provision of the balls 12 on the one hand reduces the coupling effect of the damping force and the inertia force in the spiral return pipe 2 and on the other hand further increases the effect of the inertia force. The two ends of the ball 12 are provided with the blocking balls 13 to prevent viscous liquid from flowing into gaps among the steel balls, influence the movement of the steel balls, and the ball 12 is not contacted with working liquid all the time in the working process. The design is to design rationally for the diameter of shutoff ball 13, makes working fluid can promote shutoff ball 13 and ball 12 motion easily, and ball 12 and shutoff ball 13's space of motion is reserved to spiral back flow 2 both sides.
The reciprocating movement of the piston 7 forces the working fluid into the spiral return tube 2, the working fluid flowing in the spiral return tube 2 generates a damping force, and the magnitude of the damping force is proportional to the length of the spiral return tube 2 and inversely proportional to the tube diameter of the spiral return tube 2. Meanwhile, since the rotational movement of the working fluid generates an inertial force proportional to the density of the working fluid, proportional to the length of the spiral return pipe 2, and inversely proportional to the pipe diameter of the spiral return pipe 2, the damping force is interrelated with the inertial force, for example, the length of the spiral return pipe 2 is lengthened in order to increase the inertial force, and at this time, the damping force is also increased. After the spiral return pipe 2 is filled with the balls, the length of the working fluid is naturally reduced, the damping force is reduced, and the density of the balls 12 is much higher than that of the working fluid, so that the inertia force can be improved. The magnitudes of the inertia force and the damping force can be adjusted by the number of the balls 12 and the reserved length of the two ends of the spiral return pipe 2 for the movement of the balls 12, so that the interaction between the damping force and the inertia force is weakened.
The conventional hydraulic inertial container mainly uses water as damping medium, has small viscosity, and the working state is greatly influenced by temperature, and the invention adopts the dimethyl silicone oil as the working liquid to increase the damping output level, the water of the dimethyl silicone oil has large viscosity, the viscosity of the dimethyl silicone oil can be selected between 10 and 300000cst, the viscosity of the dimethyl silicone oil can be selected according to actual needs, the use temperature of the dimethyl silicone oil is-60 to 200 ℃, and the change of the environmental temperature has little influence on the working state of the dimethyl silicone oil, thereby having good viscosity-temperature property.
The invention provides a novel hydraulic inertial damping device, which has the working principle that: the first connecting piece 3 and the second connecting piece 4 are connected with a supporting structure between building floors, the supporting structure connected with the damping device is easy to shake under the action of earthquake or external force to generate reciprocating motion, and the piston rod 8 is driven to reciprocate under the action of reciprocating load, so that the piston 7 extrudes working liquid in the hydraulic cylinder 1, a part of the working liquid flows into a working space at the other side of the piston 7 through a gap between the piston 7 and the hydraulic cylinder 1 and a through hole 701 on the piston 7, the flow of the working liquid generates nonlinear damping force with low speed index, the excessive damping force can be limited, and the device is effectively protected; the other part of the spiral return pipe 2 generates rotary motion, the ball 12 and the blocking ball 13 roll reciprocally under the action of pressure difference, and the conversion form from the linear motion of the piston 7 to the rotary motion of the working fluid can realize the amplification effect of mass, improve the inertia force and weaken the coupling effect of the damping force and the inertia force in the spiral return pipe 2.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. The utility model provides a novel hydraulic formula is used to hold damping device, a serial communication port, including the hydraulic cylinder, it has the piston rod to peg graft in the hydraulic cylinder, be equipped with the piston in the hydraulic cylinder, the piston with piston rod fixed connection, the one end of hydraulic cylinder is equipped with first connecting piece, the other end of hydraulic cylinder is equipped with the second connecting piece, first connecting piece with piston rod fixed connection, the second connecting piece with hydraulic cylinder fixed connection, the outside cover of hydraulic cylinder is equipped with spiral back flow, spiral back flow both ends all with the inside intercommunication of hydraulic cylinder, be equipped with a plurality of ball in the spiral back flow, the both sides of ball are equipped with the shutoff ball, the diameter of shutoff ball is greater than or equal to spiral back flow pipe's internal diameter, the piston with hydraulic cylinder clearance fit, the piston evenly is equipped with a plurality of through-hole along its circumference.
2. The novel hydraulic type inertial damping device according to claim 1, wherein sealing sleeves are arranged at two ends of the inside of the hydraulic cylinder, fastening rings are sleeved on the outer sides of the sealing sleeves, the fastening rings are connected with the inner wall of the hydraulic cylinder in a screwing mode, the sealing sleeves are fixed in the hydraulic cylinder through the fastening rings, and the piston rod is connected with the two sealing sleeves in a plugging mode.
3. The novel hydraulic inertial damping device according to claim 2, wherein the diameter of the two ends of the piston rod is the same as the inner diameter of the sealing sleeve.
4. The novel hydrodynamic inertial damping device according to claim 1, wherein the diameter of the balls is smaller than the inner diameter of the spiral return tube.
5. The novel hydrodynamic inertial damping device according to claim 1, wherein the liquid in the hydraulic cylinder is simethicone.
6. The novel hydraulic type inertial damping device according to claim 2, wherein a sealing groove is formed in the inner wall of the sealing sleeve, and a sealing rubber ring is fixedly installed in the sealing groove.
7. The novel hydraulic inertial damping device according to claim 1, wherein an accommodating cavity is formed in one end, close to the hydraulic cylinder, of the second connecting piece, and the depth of the accommodating cavity is larger than the depth required by the maximum stroke of the piston rod.
8. The novel hydraulic inertial damping device according to claim 1, wherein a dust cover is arranged between the first connecting piece and the hydraulic cylinder, one end of the dust cover is fixedly connected with the piston rod, and the other end of the dust cover is fixedly connected with the hydraulic cylinder.
9. The novel hydraulic inertial damping device according to claim 1, wherein the first connecting piece and the second connecting piece are provided with mounting holes, and hanging rings are connected in the mounting holes in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111346531.2A CN114033828B (en) | 2021-11-15 | 2021-11-15 | Novel hydraulic type inertial damping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111346531.2A CN114033828B (en) | 2021-11-15 | 2021-11-15 | Novel hydraulic type inertial damping device |
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| CN114033828A CN114033828A (en) | 2022-02-11 |
| CN114033828B true CN114033828B (en) | 2023-07-14 |
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| CN117230911B (en) * | 2023-11-16 | 2024-02-06 | 北京市建筑设计研究院有限公司 | Integrated serial-type inertial damping and shock absorbing device |
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| EP2305531A1 (en) * | 2009-10-01 | 2011-04-06 | Voith Patent GmbH | Device for damping forces of traction and compression |
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| CN111236722A (en) * | 2020-01-20 | 2020-06-05 | 同济大学 | Limit damper with variable inertial volume |
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