CN106763404B - Shock absorber capable of limiting degree of freedom - Google Patents
Shock absorber capable of limiting degree of freedom Download PDFInfo
- Publication number
- CN106763404B CN106763404B CN201710152857.9A CN201710152857A CN106763404B CN 106763404 B CN106763404 B CN 106763404B CN 201710152857 A CN201710152857 A CN 201710152857A CN 106763404 B CN106763404 B CN 106763404B
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- Prior art keywords
- connecting rod
- sliding
- lower connecting
- upper connecting
- rod
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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
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a shock absorber for limiting the degree of freedom, which comprises an upper connecting rod and a lower connecting rod; sliding devices are arranged at the left end and the right end of the upper connecting rod, the outer end of each sliding device is connected with an elastic structure, and the outer end of each elastic structure is connected with a blocking device; the left end and the right end of the lower connecting rod are also provided with sliding devices, the outer ends of the sliding devices are connected with elastic structures, and the outer ends of the elastic structures are connected with blocking devices; a hinged rod is arranged between the sliding device at the left end of the upper connecting rod and the sliding device at the right end of the lower connecting rod, a hinged rod is arranged between the sliding device at the right end of the upper connecting rod and the sliding device at the left end of the lower connecting rod, and the intersection of the two hinged rods can be rotatably connected; and each sliding device is hinged with the corresponding hinge rod. The invention has the advantages of simple structure, wide application range and the like, can be packaged into a single vibration damping element, and can also be built into a vibration damping system by simultaneously using a plurality of vibration dampers.
Description
Technical Field
The invention belongs to the technical field of vibration control, and particularly relates to a vibration absorber with limited freedom degree.
Background
In the process of transporting large-scale equipment and precision equipment, the method is limited by the condition limitation of engineering realization, and the mass center of most vibration reduction systems is higher than the plane of the vibration reduction systems. The installation state not only causes the coupling of translation and rotation, but also has larger shaking amount under various limit conditions of the transportation mechanical environment, thereby influencing the transportation safety of the equipment.
The vibration isolation of the base of the precision pointing equipment needs lower system frequency, and the pointing equipment needs to avoid shaking interference. The vibration damping system used in the aspects of earthquake resistance and wind resistance of high-rise buildings needs higher torsional rigidity and lower translational rigidity. The common vibration damping system has no linkage among all vibration damping elements, so that the overall shaking amount is large, and the pointing accuracy is interfered.
Disclosure of Invention
In view of the above, the present invention is directed to a damper with limited degrees of freedom, which overcomes the deficiencies of the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a shock absorber for limiting freedom degree comprises an upper connecting rod and a lower connecting rod;
sliding devices are arranged at the left end and the right end of the upper connecting rod, the outer end of each sliding device is connected with an elastic structure, and the outer end of each elastic structure is connected with a blocking device;
the left end and the right end of the lower connecting rod are also provided with sliding devices, the outer ends of the sliding devices are connected with elastic structures, and the outer ends of the elastic structures are connected with blocking devices;
a hinged rod is arranged between the sliding device at the left end of the upper connecting rod and the sliding device at the right end of the lower connecting rod, a hinged rod is arranged between the sliding device at the right end of the upper connecting rod and the sliding device at the left end of the lower connecting rod, and the intersection of the two hinged rods can be rotatably connected;
and each sliding device is hinged with the corresponding hinge rod.
Further, slider is the sliding block, the sliding block suit is on last connecting rod or lower connecting rod.
Furthermore, the sliding block is connected with the hinge rod through a universal hinge.
Further, the elastic structure is a spring.
Further, the blocking device is a baffle. The baffle is fixed on the upper connecting rod or the lower connecting rod
Further, the two hinge rods are connected at the intersection through a connecting pin shaft.
Further, the upper connecting rod and the lower connecting rod are arranged in parallel.
Compared with the prior art, the shock absorber with the limited freedom degree has the following advantages: the vibration absorber limits one degree of freedom of rotation of the vibration absorbing system from the aspect of mechanical structure, and can be used for ultra-low frequency transportation vibration isolation of precision equipment, vibration isolation of precision pointing equipment and wind prevention and earthquake resistance of buildings; the invention has the advantages of simple structure, wide application range and the like, can be packaged into a single vibration damping element, and can also be built into a vibration damping system by simultaneously using a plurality of the vibration dampers.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a limited freedom shock absorber according to an embodiment of the present invention;
description of reference numerals:
1. a baffle plate; 2. a spring; 3. a slider; 4. universal hinges; 5. an upper connecting rod; 6. a hinged lever; 7. connecting a pin shaft; 8. a lower connecting rod; .
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, a damper for restricting a degree of freedom includes an upper connecting rod 5, a lower connecting rod 8; the upper connecting rod 5 and the lower connecting rod 8 are arranged in parallel.
Sliding devices are arranged at the left end and the right end of the upper connecting rod 5, the outer ends of the sliding devices are connected with elastic structures, and the outer ends of the elastic structures are connected with blocking devices;
the left end and the right end of the lower connecting rod 8 are also provided with sliding devices, the outer ends of the sliding devices are connected with elastic structures, and the outer ends of the elastic structures are connected with blocking devices;
a hinged rod 6 is arranged between the sliding device at the left end of the upper connecting rod 5 and the sliding device at the right end of the lower connecting rod 8, a hinged rod 6 is arranged between the sliding device at the right end of the upper connecting rod 5 and the sliding device at the left end of the lower connecting rod 8, and the intersection of the two hinged rods 6 is rotatably connected;
and each sliding device is hinged with the corresponding hinge rod 6.
The sliding device is a sliding block 3, and the sliding block 3 is sleeved on the upper connecting rod 5 or the lower connecting rod 8. The sliding block 3 is connected with the hinge rod 6 through a universal hinge. The elastic structure is a spring 2. The blocking device is a baffle plate 1, and the baffle plate 1 is fixed on the upper connecting rod 5 or the lower connecting rod 8. The two hinge levers 6 are connected at the intersection by a connecting pin 7.
When the vibration damper is used, the upper connecting rod 5 and the lower connecting rod 8 are respectively connected between a body to be damped and a foundation, when the vibration damper is excited along the Z direction, the distance between the upper connecting rod 5 and the lower connecting rod 8 is changed, so that the included angle between the two hinged rods 6 is changed, the sliding block 3 is pushed to compress or stretch the spring 2, and the vibration damper obtains elasticity along the Z direction.
When the vibration absorber is excited along the X direction, the lower connecting rod 8 moves transversely, the upper connecting rod 5 moves transversely in the opposite direction, and the upper connecting rod 5 and the lower connecting rod 8 move transversely in the opposite direction, so that the vibration absorbing component obtains elasticity along the X direction.
When the damper is excited to rotate around the Y axis, the upper connecting rod 5 and the lower connecting rod 8 have non-parallel rotation trends from the parallel direction, the rigidity of the damper rotating around the Y axis is basically structural rigidity limited by the rigid connection limit of the hinge rod 6 and the connecting pin shaft 7 which are incompressible.
Therefore, the vibration damper has Z, X-direction translational elastic rigidity, the Y-direction rigidity and the Rx-direction rigidity are zero, the Rz rigidity and the Ry rigidity are structural rigidity, and the elastic rigidity of the Rz can be obtained by installing a spring at the 7-connection pin shaft. The multiple vibration damping components are combined and used along different directions, so that the vibration damping system can obtain the control rotation capacity in multiple directions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. A limited degree of freedom shock absorber characterized by: the device is composed of an upper connecting rod (5), a lower connecting rod (8), a baffle (1), an elastic structure, a sliding block (3), a universal hinge (4), a hinge rod (6) and a connecting pin shaft (7);
sliding devices are arranged at the left end and the right end of the upper connecting rod (5), the outer ends of the sliding devices are connected with elastic structures, and the outer ends of the elastic structures are connected with blocking devices;
the left end and the right end of the lower connecting rod (8) are also provided with sliding devices, the outer ends of the sliding devices are connected with elastic structures, and the outer ends of the elastic structures are connected with blocking devices;
a hinged rod (6) is arranged between the sliding device at the left end of the upper connecting rod (5) and the sliding device at the right end of the lower connecting rod (8), a hinged rod (6) is arranged between the sliding device at the right end of the upper connecting rod (5) and the sliding device at the left end of the lower connecting rod (8), and the intersection of the two hinged rods (6) can be rotatably connected;
each sliding device is hinged with the corresponding hinge rod (6); the sliding block (3) is connected with the hinge rod (6) through a universal hinge; the two hinged rods (6) are connected at the intersection through a connecting pin shaft (7);
the sliding device is a sliding block (3), and the sliding block (3) is sleeved on the upper connecting rod (5) or the lower connecting rod (8);
the blocking device is a baffle (1); the baffle (1) is fixed on the upper connecting rod (5) or the lower connecting rod (8);
the upper connecting rod (5) and the lower connecting rod (8) are arranged in parallel;
the elastic structure is a spring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152857.9A CN106763404B (en) | 2017-03-14 | 2017-03-14 | Shock absorber capable of limiting degree of freedom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152857.9A CN106763404B (en) | 2017-03-14 | 2017-03-14 | Shock absorber capable of limiting degree of freedom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763404A CN106763404A (en) | 2017-05-31 |
| CN106763404B true CN106763404B (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710152857.9A Active CN106763404B (en) | 2017-03-14 | 2017-03-14 | Shock absorber capable of limiting degree of freedom |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735952A (en) * | 1970-02-13 | 1973-05-29 | Mechanics Research Inc Los Ang | Energy absorbing shock isolation stabilizing arrangement |
| CN2392032Y (en) * | 1999-10-12 | 2000-08-16 | 原培 | Vibration-damper |
| CN105350675A (en) * | 2015-10-05 | 2016-02-24 | 上海大学 | Vertical seismic isolation apparatus |
| CN105627043A (en) * | 2016-04-08 | 2016-06-01 | 徐光武 | Damping mounting rack for smoothing reactor |
| CN105655093A (en) * | 2016-04-08 | 2016-06-08 | 国网山东省电力公司荣成市供电公司 | Shock-absorbing transformer mounting rack |
| CN206571878U (en) * | 2017-03-14 | 2017-10-20 | 天津航天机电设备研究所 | A kind of shock absorber of restraint of liberty degree |
-
2017
- 2017-03-14 CN CN201710152857.9A patent/CN106763404B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735952A (en) * | 1970-02-13 | 1973-05-29 | Mechanics Research Inc Los Ang | Energy absorbing shock isolation stabilizing arrangement |
| CN2392032Y (en) * | 1999-10-12 | 2000-08-16 | 原培 | Vibration-damper |
| CN105350675A (en) * | 2015-10-05 | 2016-02-24 | 上海大学 | Vertical seismic isolation apparatus |
| CN105627043A (en) * | 2016-04-08 | 2016-06-01 | 徐光武 | Damping mounting rack for smoothing reactor |
| CN105655093A (en) * | 2016-04-08 | 2016-06-08 | 国网山东省电力公司荣成市供电公司 | Shock-absorbing transformer mounting rack |
| CN206571878U (en) * | 2017-03-14 | 2017-10-20 | 天津航天机电设备研究所 | A kind of shock absorber of restraint of liberty degree |
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| Publication number | Publication date |
|---|---|
| CN106763404A (en) | 2017-05-31 |
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