CN203477160U - Hydraulic shock absorber with active adjustable damping - Google Patents

Hydraulic shock absorber with active adjustable damping Download PDF

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Publication number
CN203477160U
CN203477160U CN201320298407.8U CN201320298407U CN203477160U CN 203477160 U CN203477160 U CN 203477160U CN 201320298407 U CN201320298407 U CN 201320298407U CN 203477160 U CN203477160 U CN 203477160U
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China
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oil
cylinder
piston
electromagnet
hydraulic motor
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Expired - Fee Related
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CN201320298407.8U
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Chinese (zh)
Inventor
陈安柱
苏宏林
王宜君
罗文华
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Jiangsu University
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Yancheng Textile Vocational and Technical College
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Abstract

The utility model relates to a hydraulic shock absorber with actively adjustable damping, comprising an oil cylinder, a piston, a one-way valve, a hydraulic motor, a flywheel, a double-acting hydraulic cylinder, a double-acting hydraulic cylinder piston, a push rod, a sliding resistor, an electromagnet A, an electromagnet B, and a friction plate. The oil cylinder is divided into an upper oil cavity and a lower oil cavity by the piston which are connected through a pipeline and the hydraulic motor. The hydraulic motor is fixedly connected with the flywheel and is in contact with the friction plate. The double-acting hydraulic cylinder piston is in sealed connection with the double-acting hydraulic cylinder and divides the double-acting hydraulic cylinder into a left cylinder and a right cylinder, and the push rod is connected with the double-acting hydraulic cylinder piston and protrudes from a left cylinder end and a right cylinder end. The electromagnet A and the electromagnet B are installed with opposite polarities, and the electromagnet B is connected with the friction plate; and the push rod can change the magnitude of the sliding resistor, and thus acting force between the electromagnet A and the electromagnet B is changed, thereby changing frictional force between the friction plate and the flywheel, and finally changing the resistance of the hydraulic motor to oil liquid in the pipeline, and the hydraulic shock absorber in the utility model can realize real-time active adjustable damping of the shock absorber.

Description

The adjustable dydraulic shock absorber of a kind of damping active
Technical field
The utility model relates to a kind of damper means, refers in particular to the adjustable dydraulic shock absorber of a kind of damping active.
Background technique
Vehicle shock absorber is arranged between vehicle frame and vehicle bridge, can decay to the vibration of vehicle body.The working principle of tradition vibration damper is: when automotive suspension high compression, vibration damper compresses thereupon, and damper piston moves down, and lower oil chamber's oil pressure raises, and flowing valve and compression valve are opened and carried out off-load; When automotive wheel moves downward away from vehicle frame, absorber, moves on damper piston, and upper chamber oil pressure raises, and rebound valve and recuperation valve are opened and carried out off-load.
Traditional resistance of shock absorber value is fixed, and there is no variable this function of damping.
At present, the adjustable dydraulic shock absorber of existing multiple damping designs open.The adjustable dydraulic shock absorber (declaring the patent No. 02111068.9) of vehicle suspension damping active that the Wang Qing of Ru, Zhejiang University is rich.But still there is following problem in these designs: the one, and in vibration damper working procedure, hydraulic fluid temperature raises, and vibration damper performance reduces; The 2nd, complex structure, manufacture cost is high, is difficult to promote.
Summary of the invention
For addressing the above problem, the utility model aims to provide a kind of damper means, and for solving, traditional damper means unstable properties, damping are non-adjustable, complex structure, manufacture cost is high wait not enough.
The technical solution adopted in the utility model:
The utility model comprises oil cylinder, floating piston, and one-way valve is some, oil hydraulic motor, flywheel, double-acting hydraulic cylinder, swept resistance, electromagnet A, electromagnet B, friction plate.Vibration damper utilizes oil hydraulic motor pressure at two ends poor, promote the side-to-side movement of double-acting hydraulic cylinder piston, push rod drives adaptive damping bar to change the size of adaptive damping put in circuit, circuital current is changed, electromagnet A, the repulsive force between electromagnet B changes thereupon, thereby changes the frictional force between friction plate and flywheel, the final resistance of oil hydraulic motor to pipeline fluid that change, makes the damping of vibration damper change with road conditions.
The resistance that oil hydraulic motor puts on pipeline fluid changes, thereby reaches the function that becomes resistance of shock absorber.The vibrational energy of vibration damper is converted into mechanical energy, and finally by friction, so that heat energy form is loose, consumes, and has reached reduction oil liquid temperature, makes vibration damper keep the function of premium properties.
The beneficial effects of the utility model
1, vibration damper is by the connection of pipeline and oil hydraulic motor, the vibrational energy of vibration damper is converted into mechanical energy, and by the friction of friction plate and oil hydraulic motor flywheel, mechanical energy is converted into heat energy form and dissipates, avoided raising because of hydraulic fluid temperature, and affected the situation of vibration damper performance;
2, the utility model requires low, reliable performance to performer, due to the pressure difference feedback characteristics at oil hydraulic motor two ends, makes it can adapt to various road conditions on a large scale, can realize damping initiatively adjustable, has most of function of automatically controlled semi-active suspension;
3, not application sensors and high-performance microprocessor of the utility model, reduces cost greatly, can be used as vibration damping and the insulator of various vehicles and mechanical device.
Accompanying drawing explanation
For comprehend structure of the present utility model and working principle, with embodiment, the utility model is described in further detail in conjunction with the following drawings.
Fig. 1 is the initiatively plan view of adjustable vibration damper of damping;
Fig. 2 is the initiatively partial front elevation view of adjustable vibration damper of damping;
Fig. 3 is the initiatively partial right side view of adjustable vibration damper of damping;
Fig. 4 is pipeline d tetra-branch road d1, d2, d3, the schematic diagram of d4;
Pipeline d inner fluid glide path when Fig. 5 is compression stroke;
Pipeline d inner fluid glide path when Fig. 6 is extension stroke.
In figure: 1, oil cylinder, 2, floating piston, 3, piston; 4, piston rod, 5,13,14,15, one-way valve, 6, oil hydraulic motor; 7, flywheel, 8, double-acting hydraulic cylinder, 9, double-acting hydraulic cylinder piston; 10, push rod, 11, variable resistance arm, 12, spring; 16, variable resistor, 17, power supply, 18, protective resistance; 19, electromagnet A, 20, electromagnet B, 21, friction plate.
Embodiment
Fig. 1 is the initiatively plan view of adjustable vibration damper of damping.
As shown in Figure 2, vibration damper comprises oil cylinder 1, floating piston 2, piston 3 and piston rod 4.Oil cylinder 1 is divided into compressed air cell a, upper oil cavitie b and lower oil cavitie c by floating piston 2 and piston 3.Described floating piston 2 diameters are identical with oil cylinder 1, can freely along oil cylinder 1, endwisely slip, and form an airtight cavity with oil cylinder 1 one end, in closed chamber, are filled with high-pressure air, guarantee that oil cylinder 1 inner fluid does not contact with air.Floating piston 2 all contacts with oil cylinder 1 inner wall sealing with piston 3.Piston rod 4 is connected with piston 3, and protrudes from the lower end of oil cylinder 1.Compressed air cell a can reduce the dither producing when wheel is received unexpected impact effectively, and compensates because piston rod 4 enters in oil cylinder 1 reduction of oil cylinder 1 oil storage volume.Upper oil cavitie b is connected by pipeline d, one-way valve (5,13,14,15) and oil hydraulic motor (6) with the fluid between lower oil cavitie c.As shown in Figure 4, pipeline d is comprised of four branch roads (d1, d2, d3, d4), and branch road d1 head end is connected with oil cylinder 1, and b is communicated with upper oil cavitie, and tail end is connected with oil hydraulic motor 6 tops, and centre is connected with one-way valve 14; Branch road d2 head end is connected by three-dimensional flowing valve with branch road d1, and tail end is connected by three-dimensional flowing valve with branch road d4, and centre is connected with one-way valve 13; Branch road d3 head end is connected by three-dimensional flowing valve with branch road d1, and tail end is connected by three-dimensional flowing valve with branch road d4, and centre is connected with one-way valve 15; Branch road d4 head end is connected with oil cylinder 1, and c is communicated with lower oil cavitie, and tail end is connected with oil hydraulic motor 6 bottoms, and centre is connected with one-way valve 5.Fluid in the pipeline d oil hydraulic motor 6 of flowing through, drives oil hydraulic motor 6 to rotate.Four one-way valves (5,13,14,15) are divided into two groups, one-way valve (5,14) is first group of one-way valve, allow the fluid of the upper oil cavitie b rear inflow lower oil cavitie of described oil hydraulic motor 6 c that flows through, one-way valve (13,15) is second group of one-way valve, allows the fluid of the lower oil cavitie c rear inflow upper oil cavitie of oil hydraulic motor 6 b that flows through.Due to the effect of one-way valve (5,13,14,15), make fluid in the pipeline d oil hydraulic motor 6 of flowing through all the time from top to bottom.As shown in Figure 5, when compression stroke, piston 3 moves upward, upper oil cavitie b fluid flow through one-way valve 14, oil hydraulic motor 6, one-way valve 5 is to lower oil cavitie c, due to now, one-way valve 15 upper end oil liquid pressures are greater than lower end, one-way valve 13 right-hand member oil liquid pressures are greater than left end, and therefore, fluid can not pass through one-way valve (13,15); As shown in Figure 6, when extension stroke, piston 3 moves downward, lower oil cavitie c fluid flow through one-way valve 13, oil hydraulic motor 6, one-way valve 15 is to upper oil cavitie b, and because one-way valve 14 right-hand member oil liquid pressures are now greater than left end, one-way valve 5 left end oil liquid pressures are greater than right-hand member, therefore, fluid can not pass through one-way valve (5,14).So, the oil hydraulic motor 6 of from top to bottom flowing through all the time of the fluid in pipeline d.Flywheel 7 is fixedly linked with the output shaft of oil hydraulic motor 6, thereby flywheel 7 rotates around same direction.
As shown in Figure 2, pipeline (e, f) is communicated with by three-dimensional flowing valve with lower pipeline on oil hydraulic motor 6, and leads to left cylinder g and the right cylinder h of double-acting hydraulic cylinder 8.Double-acting hydraulic cylinder piston 9 contacts with double-acting hydraulic cylinder 8 sealings, and is divided into left cylinder g, right cylinder h.Push rod 10 is connected with double-acting hydraulic cylinder piston 9 and protrudes from left cylinder g, right cylinder h two ends.It is done work when in pipeline d, fluid is flowed through oil hydraulic motor 6, and oil hydraulic motor 6 upper pipeline oil pressure are greater than lower pipeline all the time, therefore in left cylinder g, oil pressure is greater than right cylinder h all the time.Spring 12 is on push rod 10 and be arranged in right cylinder h, and spring 12 not only makes up the pressure difference of left and right cylinder, also for double-acting hydraulic cylinder piston 9 provides restoring force left.Push rod 10 is connected with variable resistance arm 11, can promote variable resistance arm 11 and horizontally slip.
As shown in Figure 3, circuit comprises variable resistor 16, power supply 17, protective resistance 18, electromagnet A19, electromagnet B20.Electromagnet A19 and contrary installation of electromagnet B20 polarity, due to energising opposite direction, thereby produce repulsive force.Electromagnet B20 left end is connected with friction plate 21, and along with the adjusting of variable resistor 16 can move around, electromagnet A19 is fixed on vehicle bridge rigid location, irremovable.Friction plate 21 and flywheel 7 laminatings, press to flywheel 7, because frictional force is directly proportional to pressure, so 7, friction plate 21 and flywheel have variable frictional force, thereby the mechanical energy of flywheel 7 can dissipate with heat energy form by friction.And for the fluid in pipeline d provides resistance, form the damping of vibration damper by oil hydraulic motor 6.By horizontally slipping of variable resistance arm 11, the resistance value in variable resistor 16 put in circuit also changes, thereby changes size of current.When variable resistance arm 11 drawn stem 10 constraints are slided to the right, it is large that resistance value in circuit becomes, electric current reduces, thereby electromagnet A19, the repulsive force of electromagnet B20 reduces, and makes also corresponding reducing of pressure that friction plate 21 puts on flywheel 7, so the frictional force that friction plate 21 and flywheel are 7 reduces, now, in 6 couples of pipeline d of oil hydraulic motor, the resistance of fluid also reduces, thus the deattenuation of vibration damper; When variable resistance arm 11 drawn stem 10 constraints are slided left, resistance value in circuit diminishes, electric current increases, thereby electromagnet A19, the repulsive force of electromagnet B20 increases, and makes the also corresponding increase of frictional force of 7, friction plate 21 and flywheel, now, in 6 couples of pipeline d of oil hydraulic motor, the resistance of fluid also increases, thereby the damping of vibration damper increases.During equilibrium position, variable resistance arm 11 is positioned at variable resistor 16 midpoint, when fluid flows, because the left cylinder g pressure of double-acting hydraulic cylinder 8 is greater than right cylinder h all the time, so variable resistance arm is only subject to push rod 10 thrust to the right, thereby during equilibrium position, the resistance value of put in circuit is maximum.Protective resistance 18 provides short-circuit protection for circuit.
Working principle
When road conditions are good, road surface is less to the excitation of vibration damper, in pipeline d, oil flow is slower, thereby the pressure difference that is reflected in oil hydraulic motor 6 two ends is also less, the thrust that pressure difference acts on double-acting hydraulic cylinder piston 9 equates with the power of spring 12, and now double-acting hydraulic cylinder piston 9 fluctuates in equilibrium position.Variable resistance arm 11 is positioned at variable resistor 16 midpoint, and circuit is large electric current, electromagnet A19, between electromagnet B20, repulsive force is larger, the frictional force that friction plate 21 puts on flywheel 7 is larger, thereby oil hydraulic motor 6 provides large flow resistance for fluid in pipeline d, and vibration damper has large damping.Now meet the requirement to travelling comfort and Security of vehicle under good road conditions are travelled.
When road conditions are severe, road surface is very large to the excitation of vibration damper, in pipeline d, oil flow is very fast, thereby the pressure difference that is reflected in oil hydraulic motor 6 two ends also raises, now the left and right cylinder pressure difference due to double-acting hydraulic cylinder 8 becomes large, the thrust that pressure difference acts on double-acting hydraulic cylinder piston 9 increases, thereby the power that promotion double-acting hydraulic cylinder piston 9 overcomes spring 12 moves right.Due to the constraint of push rod 10, variable resistance arm 11 slides to the right, accesses resistance value and become large in circuit, and electric current reduces.Electromagnet A19, the repulsion between electromagnet B20 is corresponding reducing also, and the frictional force of 21 pairs of flywheels 7 of friction plate reduces, thus the flow resistance that 6 pairs of pipeline d inner fluids of oil hydraulic motor provide reduces, and resistance of shock absorber reduces.Now meet the requirement to travelling comfort and Security of vehicle under severe road conditions are travelled.
During different road conditions, due to the poor difference of oil hydraulic motor 6 pressure at two ends, the damping of final vibration damper is not identical yet, can so that vehicle according to the quality adjustable suspension damping adaptively size of the road conditions of travelling to realize the optimal control of semi-active suspension.The vibrational energy of vibration damper is converted into mechanical energy, and finally by friction, so that heat energy form is loose, consumes, and has reached reduction oil liquid temperature, makes vibration damper keep the function of premium properties.

Claims (6)

1. the adjustable dydraulic shock absorber of damping active, is characterized in that: comprise oil cylinder (1), floating piston (2), piston (3), one-way valve (5,13,14,15), oil hydraulic motor (6), flywheel (7), double-acting hydraulic cylinder piston (9), push rod (10), variable resistor (16), electromagnet A (19), electromagnet B (20), friction plate (21); Described oil cylinder (1) is divided into compressed air cell a, upper oil cavitie b and downstream cavity c by floating piston (2) and piston (3); Described floating piston (2) one end contacts with fluid, and one end is sealing gas chamber; Described one-way valve (5,13,14,15) is installed with special type; Described flywheel (7) is fixedly linked with the output shaft of oil hydraulic motor (6), and contacts with friction plate (21); Described double-acting hydraulic cylinder piston (9) promotes variable resistance arm (11) and horizontally slips; Described electromagnet B (20) is connected with friction plate (21).
2. a kind of damping according to claim 1 adjustable dydraulic shock absorber initiatively, it is characterized in that: described oil cylinder (1) is isolated into upper oil cavitie b and downstream cavity c by piston (3), upper oil cavitie b is connected by pipeline d, one-way valve (5,13,14,15) and oil hydraulic motor (6) with downstream cavity c.
3. a kind of damping according to claim 1 adjustable dydraulic shock absorber initiatively, it is characterized in that: described floating piston (2) is installed on oil cylinder (1) inside, diameter is identical with oil cylinder (1), can freely along oil cylinder (1), endwisely slip, form an airtight cavity with oil cylinder (1) one end, in closed chamber, be filled with high-pressure air, guarantee that oil cylinder (1) inner fluid does not contact with air.
4. the adjustable dydraulic shock absorber of a kind of damping active according to claim 1, is characterized in that: described electromagnet A (19) and contrary installation of electromagnet B (20) polarity.
5. a kind of damping according to claim 1 adjustable dydraulic shock absorber initiatively, it is characterized in that: described double-acting hydraulic cylinder piston (9) contacts with double-acting hydraulic cylinder (8) sealing, and be divided into left cylinder g, right cylinder h, push rod (10) is connected with double-acting hydraulic cylinder piston (9) and protrudes from left cylinder g, right cylinder h two ends, described push rod (10) is connected with variable resistance arm (11), can promote variable resistance arm (11) and horizontally slip.
6. a kind of damping according to claim 2 adjustable dydraulic shock absorber initiatively, it is characterized in that: described pipeline d is comprised of four branch roads (d1, d2, d3, d4), branch road d1 head end is connected with oil cylinder (1), b is communicated with upper oil cavitie, tail end is connected with oil hydraulic motor (6) top, and centre is connected with one-way valve 14; Branch road d2 head end is connected by three-dimensional flowing valve with branch road d1, and tail end is connected by three-dimensional flowing valve with branch road d4, and centre is connected with one-way valve (13); Branch road d3 head end is connected by three-dimensional flowing valve with branch road d1, and tail end is connected by three-dimensional flowing valve with branch road d4, and centre is connected with one-way valve (15); Branch road d4 head end is connected with oil cylinder (1), and c is communicated with lower oil cavitie, and tail end is connected with oil hydraulic motor (6) bottom, and centre is connected with one-way valve (5).Fluid in the pipeline d oil hydraulic motor (6) of flowing through, drives oil hydraulic motor (6) to rotate.
CN201320298407.8U 2013-05-17 2013-05-17 Hydraulic shock absorber with active adjustable damping Expired - Fee Related CN203477160U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423363A (en) * 2013-08-12 2013-12-04 江苏大学 Hydraulic damper with actively-adjustable damping
CN104565178A (en) * 2013-10-21 2015-04-29 盐城纺织职业技术学院 Hydraulic shock absorber with active adjustable damping
CN105605377A (en) * 2016-02-22 2016-05-25 亚翔系统集成科技(苏州)股份有限公司 Anti-vibration pedestal
CN106678484A (en) * 2016-11-17 2017-05-17 国家电网公司 High-energy pipeline impact power absorber in power planning

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423363A (en) * 2013-08-12 2013-12-04 江苏大学 Hydraulic damper with actively-adjustable damping
CN104565178A (en) * 2013-10-21 2015-04-29 盐城纺织职业技术学院 Hydraulic shock absorber with active adjustable damping
CN105605377A (en) * 2016-02-22 2016-05-25 亚翔系统集成科技(苏州)股份有限公司 Anti-vibration pedestal
CN105605377B (en) * 2016-02-22 2020-02-04 亚翔系统集成科技(苏州)股份有限公司 Vibration-proof base
CN106678484A (en) * 2016-11-17 2017-05-17 国家电网公司 High-energy pipeline impact power absorber in power planning

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Owner name: JIANGSU UNIVERSITY

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Effective date: 20150413

C41 Transfer of patent application or patent right or utility model
C53 Correction of patent for invention or patent application
CB03 Change of inventor or designer information

Inventor after: Li Zhongxing

Inventor after: Chen Wang

Inventor after: Wu Yue

Inventor after: Ju Longyu

Inventor before: Chen Anzhu

Inventor before: Su Honglin

Inventor before: Wang Yijun

Inventor before: Luo Wenhua

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: CHEN ANZHU SU HONGLIN WANG YIJUN LUO WENHUA TO: LI ZHONGXING CHEN WANG WU YUE JU LONGYU

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TR01 Transfer of patent right

Effective date of registration: 20150413

Address after: 212013 Zhenjiang City, Jiangsu Province University Road, No. 301

Patentee after: Jiangsu University

Address before: 224005 No. 265 Jiefang South Road, Jiangsu, Yancheng City

Patentee before: Yancheng Textile Vocational College

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140312

Termination date: 20170517

CF01 Termination of patent right due to non-payment of annual fee