CN103527704A - Combined type hydraulic damping air spring vibration isolator - Google Patents
Combined type hydraulic damping air spring vibration isolator Download PDFInfo
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- CN103527704A CN103527704A CN201310540271.1A CN201310540271A CN103527704A CN 103527704 A CN103527704 A CN 103527704A CN 201310540271 A CN201310540271 A CN 201310540271A CN 103527704 A CN103527704 A CN 103527704A
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- piston
- spring
- hydraulic damping
- cover plate
- air bag
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Abstract
The invention discloses a combined type hydraulic damping air spring vibration isolator. The combined type hydraulic damping air spring vibration isolator comprises an air bag, an upper cover plate arranged on the top of the air bag, a lower sealing plate arranged at the bottom of the air bag and a hydraulic damping component. The hydraulic damping component comprises a liquid seal piston sleeve, a piston, a first spring cover sheet and a second spring cover sheet, wherein the liquid seal piston sleeve is arranged in the air bag, the upper end of the liquid seal piston sleeve is connected to the inner side of the upper cover plate, the piston is arranged in the liquid seal piston sleeve, a pair of piston holes are formed in the piston and are symmetrical about the axis of the piston, the first spring cover sheet is arranged at the lower end of one piston hole and the second spring cover sheet is arranged at upper end of the other piston hole. By the adoption of the combined type hydraulic damping air spring vibration isolator, the performance of isolation of pulse vibration and low-frequency vibration is improved, the secondary vibration isolation performance is improved, displacement caused by air leakage and reduction of pressure is avoided, and the position of a protected device is guaranteed.
Description
Technical field
The present invention relates to vibration isolator, particularly a kind of composite hydraulic damping air cushion shock absorber.
Background technique
Pneumatic spring is a kind of novel elastic element.It is to be filled with pressurized air in flexible closed air chamber, utilize the compressibility of air to realize a kind of nonmetal spring of elastic reaction, there is the functions such as buffering, vibration damping and action, pneumatic spring has good elastic characteristic, compare with rubber spring with common steel spring, it has many advantages, and wherein the most outstanding is that it can realize the low rigidity of spring under large load.
Existing pneumatic spring, maximum structural feature is the function that can absorb and isolate dither, but need the cooperation of intraluminal pressure, when inside air bag overpressure or when too low, vibration isolating effect and stability all can variation, when internal pressure is too high, two-stage vibration isolation effect is poor, when internal pressure is too low, likely produce the phenomenon of displacement, be that it all can produce displacement in three directions, for some special operation condition, be unallowed, as wished, vibration isolator realizes frequency modulation or has wider vibration isolation frequency band, avoid producing dislocation, two-stage vibration isolation poor performance, rigid collision accident, and damage protected equipment or other equipment.
Summary of the invention
The object of this invention is to provide a kind of composite hydraulic damping air cushion shock absorber; this mechanism combines hydraulic damping parts and pneumatic spring cleverly; not only can regulate vibration isolation frequency band; improve the anti-vibration performance of impulse oscillation and low-frequency vibration; improve two-stage vibration isolation performance; avoid because of gas leakage; the dislocation that pressure decreased produces; guaranteed the position of protected equipment; improved the safety and reliability of protected equipment operation; and impact is quick on the draw, can make system reset rapidly, extended the working life of vibration isolator.
In order to realize above object, the present invention is achieved by the following technical solutions:
A damping air cushion shock absorber, comprises air bag, is separately positioned on cover plate of upper layer and lower floor's shrouding of air bag top and bottom, is characterized in, also comprises:
Hydraulic damping parts;
Described hydraulic damping parts comprise:
Fluid-tight piston sleeve, it is arranged in air bag, and described fluid-tight piston sleeve upper end is connected with cover plate of upper layer inner side;
Piston, it is arranged in fluid-tight piston sleeve, and described piston offers pair of pistons hole, and a pair of described piston hole is symmetrical along piston medial axis;
The first spring cover plate, the first described spring cover plate arranges one of them piston hole lower end;
The second spring cover plate, it is arranged on another piston hole upper end;
Correspondence is arranged in piston hole and the first piston spring being connected with the first spring cover plate, and when piston moves upward, first piston spring is received the pressure of liquid, and opens the first spring cover plate;
Correspondence is arranged in piston hole and the second piston spring being connected with the second spring cover plate, and when piston moves downward, the second piston spring is received the pressure of liquid, and opens the first spring cover plate.
Described hydraulic damping parts also comprise:
Plunger, its one end is connected with piston base, and it is outside that its other end extension is arranged on lower floor's shrouding.
This vibration isolator also comprises a pair of limiting board, and it is vertically arranged on respectively lower floor's shrouding both sides.
This vibration isolator also comprises limit spring and base plate, and described base plate is connected with the plunger the other end; Described limit spring is arranged between base plate and lower floor's shrouding.
The present invention compared with prior art, has the following advantages:
1, be subject to low frequency, burst, during pulse shock, is mainly taken by spring; While being subject to high-frequency percussion, by spring, hydraulic damping, air bag, jointly taken; Therefore, this vibration isolator impact is quick on the draw, and is arranged on instrument and strengthens low-and high-frequency vibration isolating effect, can make system reset rapidly.
2, have limit structure, protection spring, and the maximum displacement of definite vibration isolator, can make space be fully utilized, and also gives to select simultaneously and brought convenience.
3, there is linkage structure, air bag inside hydraulic damping can coordinate the damping spring of air bag and bottom, the quiet distortion when spacing of piston displacement is greater than spring load rating, after spring failure, air bag had still both played the effect of damping.So hydraulic damping coordinates air bag and spring to produce multistage vibration isolation; Lower springs can be impelled piston fast reposition again, and interlock effect is remarkable.
4, the hydraulic damping parts that arrange, have not only cushioned dither and also can coordinate lower springs to absorb a large amount of low-frequency vibrations.
Accompanying drawing explanation
Fig. 1 is the structural representation of hydraulic damping parts of the present invention;
Fig. 2 is the structural representation of a kind of composite hydraulic damping of the present invention air cushion shock absorber;
Fig. 3 is that the deformational displacement of air bag is, the relation of the length of the load metamorphism displacement of limit spring, limiting board, fluid-tight piston sleeve length and running length.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 1, a kind of composite hydraulic damping air cushion shock absorber, comprises air bag 1, is separately positioned on cover plate of upper layer 2 and lower floor's shrouding 3 of air bag 1 top and bottom, and hydraulic damping parts.
As shown in Figure 1, 2, hydraulic damping parts comprise: fluid-tight piston sleeve 41, and it is arranged in air bag 1, and fluid-tight piston sleeve 41 upper ends are connected with cover plate of upper layer inner side; Piston 42, it is arranged in fluid-tight piston sleeve 41, and described piston 42 offers pair of pistons hole 421, and a pair of described piston hole 421 is symmetrical along piston medial axis; The first spring cover plate 43, the first described spring cover plate 43 arranges one of them piston hole 421 lower end; The second spring cover plate 44, it is arranged on another piston hole 421 upper ends; Correspondence is arranged in piston hole 421 and the first piston spring 45 being connected with the first spring cover plate 43, and when piston 42 moves upward, first piston spring 45 is received the pressure of liquid, and opens the first spring cover plate 43; Correspondence is arranged in piston hole 421 and the second piston spring 47 being connected with the second spring cover plate 44, and when piston 42 moves downward, the second piston spring 47 is received the pressure of liquid, and opens the first spring cover plate 43; Plunger 46, its one end is connected with piston 42 bottoms, and its other end extension is arranged on lower floor's shrouding 3 outsides.
This mechanism also comprises a pair of limiting board 5, and it is vertically arranged on respectively lower floor's shrouding 3 both sides; Limit spring 6 and base plate 7, described base plate 7 is connected with plunger 46 the other ends; Described limit spring 6 is arranged between base plate 7 and lower floor's shrouding 3.
The action principle of hydraulic damping parts:
In fluid-tight piston sleeve 41, piston 42 moves upward, and first piston spring 45 is subject to fluid pressure, and the first spring cover plate 43 is opened.First piston spring 45 is subject to the size of hydraulic pressure and follows the size of vibration relevant, and amplitude is large, and camber of spring is large, and the amplitude that the first spring cover plate 43 is opened is also large, and amplitude reduces, and the amplitude that the first spring cover plate 43 is opened reduces, and has played the effect of damping.On the contrary, piston 42 moves downward, and the second piston spring 47 is subject to fluid pressure, and the second spring cover plate 44 is opened.Vibration amplitude is large; camber of spring is large; the amplitude that the second spring cover plate 44 is opened is also large; amplitude reduces; the amplitude of opening reduces, and has played the effect of hydraulic damping, when air bag internal pressure reduces; hydraulic damping parts can play the inconsistent phenomenon that prevents Three-bearing free vibration and cause, protection instrument.
When vibration isolator is subject to low-frequency pulse large-amplitude vibration, instrument is connected on the mount inlet 71 of base plate 7, be subject to the vibratory impulse on cover plate of upper layer 2, first limit spring 6 can absorb pulse violent oscillatory motion, air bag 1 shock absorbing power.Hydraulic damping parts and limit spring 6 interlocks simultaneously can produce damping, absorb vibration, and limit spring 6 can promote again hydraulic damping to reset.
When vibration isolator is subject to low-frequency pulse small amplitude motion, be subject to the vibratory impulse on cover plate of upper layer 2, air bag 1 can cushion and effectively absorbing high-frequency vibration.When load-bearing surpasses limit spring 6 load, limit spring 6 limited location plate 5 protections, hydraulic damping parts and air bag 1 cooperatively interact and still can absorb vibration.When load is excessive, hydraulic damping parts can play position-limiting action, and protective gear did not lose efficacy, protection instrument.
The present invention can carry out type selecting to each parts for concrete service condition, as: the deformational displacement of air bag 1; The load metamorphism displacement of limit spring 6; The length of limiting board 5; Fluid-tight piston sleeve 41 length and running length.Correlation between each parts selection can be with reference to Fig. 3.
In sum; a kind of composite hydraulic damping of the present invention air cushion shock absorber; this mechanism combines hydraulic damping parts and pneumatic spring cleverly; not only can regulate vibration isolation frequency band; improve the anti-vibration performance of impulse oscillation and low-frequency vibration; improve two-stage vibration isolation performance; avoid because of gas leakage; the dislocation that pressure decreased produces; guaranteed the position of protected equipment, improved the safety and reliability of protected equipment operation, and impact has been quick on the draw; can make system reset rapidly, extend the working life of vibration isolator.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Those skilled in the art, read after foregoing, for multiple modification of the present invention with to substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (4)
1. a composite hydraulic damping air cushion shock absorber, comprises air bag (1), is separately positioned on cover plate of upper layer (2) and lower floor's shrouding (3) of air bag (1) top and bottom, it is characterized in that, also comprises:
Hydraulic damping parts;
Described hydraulic damping parts comprise:
Fluid-tight piston sleeve (41), it is arranged in air bag (1), and described fluid-tight piston sleeve (41) upper end is connected with cover plate of upper layer inner side;
Piston (42), it is arranged in fluid-tight piston sleeve (41), and described piston (42) offers pair of pistons hole (421), and a pair of described piston hole (421) is symmetrical along piston medial axis;
The first spring cover plate (43), the first described spring cover plate (43) arranges one of them piston hole (421) lower end;
The second spring cover plate (44), it is arranged on another piston hole upper end;
Correspondence is arranged in piston hole (421) and the first piston spring (45) being connected with the first spring cover plate (43), and when piston (42) moves upward, first piston spring (45) is received the pressure of liquid, and opens the first spring cover plate (43);
Correspondence is arranged in piston hole (421) and the second piston spring (47) being connected with the second spring cover plate (44), and when piston (42) moves downward, the second piston spring (47) is received the pressure of liquid, and opens the first spring cover plate (43).
2. composite hydraulic damping air cushion shock absorber as claimed in claim 1, is characterized in that, described hydraulic damping parts also comprise:
Plunger (46), its one end is connected with piston (42) bottom, and its other end extension is arranged on lower floor's shrouding (3) outside.
3. composite hydraulic damping air cushion shock absorber as claimed in claim 1, is characterized in that, also comprises a pair of limiting board (5), and it is vertically arranged on respectively lower floor's shrouding (3) both sides.
4. composite hydraulic damping air cushion shock absorber as claimed in claim 2, is characterized in that, also comprises limit spring (6) and base plate (7), and described base plate (7) is connected with plunger (46) the other end; Described limit spring (6) is arranged between base plate (7) and lower floor's shrouding (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310540271.1A CN103527704B (en) | 2013-11-05 | 2013-11-05 | A kind of composite hydraulic damping air cushion shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310540271.1A CN103527704B (en) | 2013-11-05 | 2013-11-05 | A kind of composite hydraulic damping air cushion shock absorber |
Publications (2)
| Publication Number | Publication Date |
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| CN103527704A true CN103527704A (en) | 2014-01-22 |
| CN103527704B CN103527704B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310540271.1A Expired - Fee Related CN103527704B (en) | 2013-11-05 | 2013-11-05 | A kind of composite hydraulic damping air cushion shock absorber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065560A (en) * | 2015-06-10 | 2015-11-18 | 浙江大学 | Ultralow-frequency hydraulic-pressure vibration isolation device based on shape memory alloy spring |
| CN105351432A (en) * | 2015-12-02 | 2016-02-24 | 江苏理工学院 | Reinforced damper |
| CN111951527A (en) * | 2020-08-04 | 2020-11-17 | 杭州巨骐信息科技股份有限公司 | Anti-interference backflow cable section early warning intelligent host |
| CN112815035A (en) * | 2021-01-21 | 2021-05-18 | 青岛博锐智远减振科技有限公司 | Air spring |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6145130A (en) * | 1984-08-07 | 1986-03-05 | Toyo Tire & Rubber Co Ltd | Liquid damping type vibration insulating supporting device |
| CN202301724U (en) * | 2011-10-21 | 2012-07-04 | 浙江吉利汽车研究院有限公司 | Flying carpet damping device for pole impact test |
| CN102661354A (en) * | 2012-05-28 | 2012-09-12 | 成业兴 | Vibration damper using damping spring to double as damping component |
| CN103363011A (en) * | 2013-08-01 | 2013-10-23 | 上海海事大学 | Metal spring steel wire rope liquid damping vibration isolator |
| CN203532606U (en) * | 2013-11-05 | 2014-04-09 | 上海海事大学 | Air hydraulic linkage mechanism for damping spring |
-
2013
- 2013-11-05 CN CN201310540271.1A patent/CN103527704B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065560A (en) * | 2015-06-10 | 2015-11-18 | 浙江大学 | Ultralow-frequency hydraulic-pressure vibration isolation device based on shape memory alloy spring |
| CN105351432A (en) * | 2015-12-02 | 2016-02-24 | 江苏理工学院 | Reinforced damper |
| CN111951527A (en) * | 2020-08-04 | 2020-11-17 | 杭州巨骐信息科技股份有限公司 | Anti-interference backflow cable section early warning intelligent host |
| CN112815035A (en) * | 2021-01-21 | 2021-05-18 | 青岛博锐智远减振科技有限公司 | Air spring |
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| CN103527704B (en) | 2015-10-28 |
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Granted publication date: 20151028 Termination date: 20181105 |