Matrix and parallel-series connection capillary pipe type shock absorber variable in system inherent frequency
A natural frequency, capillary technology, applied in the direction of shock absorber, shock absorber-spring combination, spring/shock absorber design characteristics, etc., can solve the problems of small adjustable range, non-adjustable natural frequency, etc. The technical means are simple and easy to implement, and the effect is ingenious
Active Publication Date: 2017-05-31
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
The system natural frequency of the hydraulic shock absorber is an important performance index of the automobile shock absorber. A disadvantage of the current performance of the hydraulic shock absorber is that the system natural frequency of the shock absorber cannot be adjusted or the adjustable range is very small
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[0046] figure 1 , figure 2 See the background technology section for related content.
[0047] Such as image 3 shown. The resistance adjustment section includes four capillaries, which are R8, R4, R2, and R1; they are equal in length and connected in series with the solenoid valve V R8 , V R4 , V R2 , V R1 control its work. The ratio of the cross-sectional areas of these four capillaries is 8:4:2:1; their lengths are all L R .
[0048] The frequency modulation section includes four capillaries, which are m8, m4, m2, and m1; they have the same cross-sectional area and are connected in parallel with the solenoid valve V m8 , V m4 , V m2 , V m1 Control its work; the ratio of the lengths of these four capillaries is 8:4:2:1. In the present embodiment, the length L of the shortest capillary m1 among the four capillaries m1 Equal to the length L of the capillary in the resistance adjustment section R half of. The diameter d of these four capillaries m Equal to 4 t...
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The invention discloses a matrix and parallel-series connection capillary pipe type shock absorber variable in system inherent frequency. A capillary pipe parallel connection type damping association segment and a capillary pipe series connection type system inherent frequency association segment are sequentially connected to a pipeline between oil conveying ports of an upper oil bin and a lower oil bin from top to bottom. The capillary pipe parallel connection type damping association segment comprises four capillary pipes connected in parallel, each capillary pipe is connected with an electromagnetic valve in series, and each electromagnetic valve controls the corresponding capillary pipe to work. The capillary pipe series connection type system inherent frequency association segment comprises four capillary pipes connected in series; and the four capillary pipes are connected with an electromagnetic valve in parallel, and the electromagnetic valve controls the four capillary pipes to work. The diameter of the capillary pipe minimum in frequency modulation segment is far larger than that of the capillary pipe in a resistance adjusting segment. In a matrix type work state table, the configuration value Smn of the electromagnetic valve in the frequency modulation segment is selected according to the condition; and in the manner of changing the mass, the problem that the system inherent frequency of an automobile hydraulic shock absorber is not adjustable or the adjustable range is very small can be solved.
Description
technical field [0001] The invention relates to the field of hydraulic automobile shock absorbers, in particular to a shock absorber with a variable system natural frequency of matrix (type) parallel capillary tubes in series. Background technique [0002] The vibration reduction methods of automobiles mainly include hydraulic type, pneumatic type and electromagnetic type. The hydraulic type is currently the most widely used vehicle vibration reduction method. The system natural frequency of the hydraulic shock absorber is an important performance index of the automobile shock absorber. A disadvantage of the current hydraulic shock absorber performance is that the system natural frequency of the shock absorber cannot be adjusted or the adjustable range is very small. [0003] The quality of the natural frequency of the hydraulic vehicle shock absorber system will directly affect the vibration amplitude, comfort and ride comfort of the vehicle. [0004] It is well known tha...
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IPC IPC(8): F16F13/00
CPCF16F13/007F16F2228/04F16F2230/18
Inventor 容强
Owner SOUTH CHINA UNIV OF TECH