CN203670578U - Constant force viscous damper - Google Patents
Constant force viscous damper Download PDFInfo
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- CN203670578U CN203670578U CN201320859069.0U CN201320859069U CN203670578U CN 203670578 U CN203670578 U CN 203670578U CN 201320859069 U CN201320859069 U CN 201320859069U CN 203670578 U CN203670578 U CN 203670578U
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- piston
- oil cylinder
- constant
- viscous damper
- constant force
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- 238000013016 damping Methods 0.000 abstract description 30
- 230000001133 acceleration Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002045 lasting effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a constant force viscous damper. The constant force viscous damper structurally comprises an oil cylinder, a piston rod and a piston. The piston is arranged on the piston rod in a sleeved mode and is arranged in the oil cylinder. The diameter of the inner wall of the oil cylinder changes according to the distance from the inner wall of the oil cylinder to the initial position of the piston, and the changing tendency is that the larger the distance from the inner wall of the oil cylinder to the middle position of the piston is, the smaller the diameter is. The constant force viscous damper is mainly used for buffer operation on equipment, enables the acceleration transmitted to the equipment to maintain unchanged, and enables energy consumption to reach largest value. The constant force viscous enables damp force to be constant through changing the clearance between the piston and the inner wall of the oil cylinder, controls the vibration acceleration transmitted to the equipment, and can conduct lasting and stable energy consumption damping on objects through the constant damping force so as to be improved in working energy consumption efficiency. Moreover, the constant force viscous damper has the advantages of being simple in structure and easy to manufacture, saving energy, protecting the environment and being practical and efficient.
Description
Technical field
The utility model relates to a kind of passive energy dissipation device, particularly a kind of constant force viscous damper.
Background technique
Viscous damper is equivalent to the piston cylinder that working medium is emplastic with regard to structure, is widely used in the field such as machinery, building.The control mechanism of viscous damper is to utilize piston to move in medium; form local pressure loss; stroke damping; its form of expression is between medium molecule and phase mutual friction between medium and piston; mechanical energy is converted into heat energy; power consumption is carried out heat exchange by metal surface and environment, reaches the impact of carrying outside alleviating, the object that reduces structural vibration, protection structural safety.But the damping force that damper provides changes compared with ambassador, and the acceleration that equipment is born is larger, be easy to object or self to cause harmful effect, just seem particularly important so design a constant force damper.
Chinese invention patent discloses a kind of controllable viscous damper No. CN101576139A, its structure is taking master cylinder cylinder as main body, and the middle part in master cylinder cylinder is provided with piston, and two ends are respectively equipped with guide sleeve, guide rod is arranged in piston and two guide sleeves, the outer end connecting lug of guide rod; Between guide sleeve and guide rod, bimetal sliding bearing is set; One end envelope of master cylinder cylinder has gland nut, and the other end, by attaching nut's auxiliary connection cylinder barrel, fills resisting medium in the cavity at the piston two ends in master cylinder cylinder; The outer end of secondary cylinder barrel is by attaching nut's auxiliary connection cylinder earrings; In piston, be provided with unidirectional differential pressure adjusting device, this unidirectional differential pressure adjusting device forms front valve by front valve core, Returnning spring, hollow hold-down bolt; Valve after rear valve core, pressure adjusting spring, back cover bolt composition; Front valve communicates by connecting passage with rear valve, and an overflow ducts is communicated with front valve, rear valve with main overflow ducts; Damping duct and unidirectional differential pressure adjusting device are symmetrical in respectively the axis of piston and are evenly arranged on the circumference of piston.Although this design can be controlled by adjusting the damping capacity of damper, it cannot provide constant damping force, can not meet the demand of some special dimensions.
Summary of the invention
The utility model technical issues that need to address are the gaps by changing piston and oil cylinder inner wall, thereby make damping force keep constant; A kind of constant force viscous damper is provided.
For solving above-mentioned technical problem, structure of the present utility model comprises oil cylinder, piston rod and piston, and piston sleeve is contained on piston rod and is placed in oil cylinder inside; The inner diameter of oil cylinder is according to changing apart from the distance of piston initial position, and variation tendency is, from piston meta more away from diameter less.
Further: the inner wall section of described oil cylinder forms a linearity curve.
Adopt after said structure, the utility model not only can make damping force constant by the gap that changes piston and oil cylinder inner wall, thereby prevents because damping force changes the too fast inefficacy that causes self structure; And carry out continual and steady passive energy dissipation by constant damping force to object, thereby improve its working efficiency; And that the design also has advantages of is simple in structure, be easy to manufacture, energy-conserving and environment-protective and practicality and high efficiency.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the change curve of acceleration in piston movement process.
Fig. 3 is the change curve of piston movement process medium velocity.
In figure: 1 is oil cylinder, 2 is piston rod, and 3 is piston, and 4 is inwall
Embodiment
A kind of constant force viscous damper as shown in Figure 1, its structure comprises oil cylinder 1, piston rod 2 and piston 3, piston 3 is sleeved on piston rod 2 and is placed in oil cylinder 1 inside; Inwall 4 diameters of oil cylinder 1 are according to changing apart from the distance of piston 3 initial positions, and variation tendency is, from piston 3 metas more away from diameter less, the interior hydraulic oil of filling of oil cylinder 1.Constant force viscous damper is mainly used in equipment is carried out to cushion task, by constant force, the acceleration of the equipment that is passed to is remained unchanged, and power consumption simultaneously also reaches maximum value.Owing to need to providing a kind of constant damping force to the equipment buffering that consumes energy, so need to design a constant force damper, due to damping force=damping constant × speed, the design is by inwall 4 diameters of the oil cylinder 1 of change viscous damper, change damping constant and speed simultaneously, make when speed is in the time increasing, damping constant can reduce, thereby has ensured the constant of damping force.When moving to both sides with piston 3 under the effect of piston rod 2 in external force, due to inwall 4 diameters of oil cylinder 1 from piston 3 metas more away from diameter less, so piston 3 is in the movement process of both sides, inwall 4 diameters of piston 3 can become more and more less, can cause piston 3 and the damping constant of hydraulic oil constantly to reduce, and the speed of piston can constantly increase under the effect of external force, now the damping constant of piston 3 and the product of speed are tending towards constant, thereby make viscous damper provide constant damping force to carry out passive energy dissipation to equipment, improve its energy consumption effect.
As shown in Figures 2 and 3 be the acceleration of piston 3 and the change curve of speed in constant force viscous damper, in the time that inwall 4 cross sections of oil cylinder 1 form when a linearity curve now viscous damper, it is maximum that the energy consumption effect of constant force viscous damper reaches.In the time moving to both sides with piston 3 under the effect of piston rod 2 in external force, now the acceleration of piston 3 as shown in Figure 2, acceleration is first increases and then decreases, now the speed of piston 3 can constantly increase as shown in Figure 3, due to inwall 4 diameters of oil cylinder 1 from piston 3 metas more away from diameter less, when diameter is in ever-reduced process, the damping constant of hydraulic oil and piston 3 can constantly reduce.Due to damping force=speed × damping constant, when piston 3 is during to two end motions, because its inwall constantly reduces, so the suffered damping constant of piston 3 constantly reduces, but the speed of piston 3 constantly increases, thus now in the time that gap reduces speed also reducing, damping constant is reducing, now the damping constant of piston 3 and the product of speed are tending towards constant, damping force is ensured constant, thereby while making, the energy consumption effect of viscous damper reach maximum.The utility model is by providing constant damping force to carry out passive energy dissipation to object, thereby reaches maximum energy efficiency; And under constant damping force, ensure the stable and safety of damper self structure.
The utility model not only can provide a kind of damper of constant damping power, and its also have advantages of simple in structure, be easy to manufacture, energy-conserving and environment-protective and practicality and high efficiency.
Claims (2)
1. a constant force viscous damper, its structure comprises oil cylinder (1), piston rod (2) and piston (3), piston (3) is sleeved on piston rod (2) and goes up and be placed in oil cylinder (1) inside; It is characterized in that: inwall (4) diameter of oil cylinder (1) is according to changing apart from the distance of piston (3) initial position, variation tendency is, from piston (3) meta more away from diameter less.
2. a kind of constant force viscous damper according to claim 1, is characterized in that: inwall (4) cross section of described oil cylinder (1) forms a linearity curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320859069.0U CN203670578U (en) | 2013-12-24 | 2013-12-24 | Constant force viscous damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320859069.0U CN203670578U (en) | 2013-12-24 | 2013-12-24 | Constant force viscous damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670578U true CN203670578U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320859069.0U Expired - Lifetime CN203670578U (en) | 2013-12-24 | 2013-12-24 | Constant force viscous damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670578U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156558A (en) * | 2015-07-18 | 2015-12-16 | 常州大学 | Self-adaptive magneto-rheological damper with single-rod variable cylinder body |
| CN105156568A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod variable-cylinder-body passive double-control variable-damping magnetorheological damper |
| CN105179568A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Double-rod multistage-piston active single-control variable-damping magneto-rheological damper |
| CN105179567A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Single-rod variable-cylinder-body active single-control variable-damping magnetorheological damper |
| CN111878536A (en) * | 2020-07-17 | 2020-11-03 | 江苏力汇振控科技有限公司 | Serial-type variable damping viscous fluid damper |
| CN112762130A (en) * | 2021-01-22 | 2021-05-07 | 江苏工邦振控科技有限公司 | Displacement variable coefficient damper |
-
2013
- 2013-12-24 CN CN201320859069.0U patent/CN203670578U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156558A (en) * | 2015-07-18 | 2015-12-16 | 常州大学 | Self-adaptive magneto-rheological damper with single-rod variable cylinder body |
| CN105179568A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Double-rod multistage-piston active single-control variable-damping magneto-rheological damper |
| CN105179567A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Single-rod variable-cylinder-body active single-control variable-damping magnetorheological damper |
| CN105156568A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod variable-cylinder-body passive double-control variable-damping magnetorheological damper |
| CN111878536A (en) * | 2020-07-17 | 2020-11-03 | 江苏力汇振控科技有限公司 | Serial-type variable damping viscous fluid damper |
| CN112762130A (en) * | 2021-01-22 | 2021-05-07 | 江苏工邦振控科技有限公司 | Displacement variable coefficient damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGZHOU ROAD STRUCTURE DAMPING CO., LTD. Free format text: FORMER NAME: CHANGZHOU ROAD STRUCTURE DAMPING EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Xinbei Longhu garden four road 213031 Jiangsu city of Changzhou province No. 118 Patentee after: CHANGZHOU RONGDA COMPOSITION VIBRATION ABSORPTION Co.,Ltd. Address before: Xinbei Longhu garden four road 213031 Jiangsu city of Changzhou province No. 118 Patentee before: CHANGZHOU ROAD STRUCTURE DAMPING EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213000 No. 66 Yulong Middle Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: JIANGSU ROAD DAMPING TECHNOLOGY Co.,Ltd. Address before: 213031 No. 118, Xinyuan Fourth Road, Longhutang, Xinbei District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU RONGDA COMPOSITION VIBRATION ABSORPTION Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |