CN109236932B - Symmetrical damper for fluid-excited solid particle motion - Google Patents
Symmetrical damper for fluid-excited solid particle motion Download PDFInfo
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- CN109236932B CN109236932B CN201811140063.1A CN201811140063A CN109236932B CN 109236932 B CN109236932 B CN 109236932B CN 201811140063 A CN201811140063 A CN 201811140063A CN 109236932 B CN109236932 B CN 109236932B
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
- F16F9/303—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium the damper being of the telescopic type
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a symmetrical damper for fluid-excited solid particles to move, and belongs to the field of dampers. The anti-symmetric piston comprises a working cylinder body, end covers A and B arranged at two ends of the working cylinder body, an anti-symmetric piston arranged in the working cylinder body, and a piston rod arranged on the anti-symmetric piston, wherein the other end of the piston rod penetrates through a linear bearing arranged on the end cover B; viscous fluid is filled in the inner space of the working cylinder body, and nine tenths of the inner space of the working cylinder body is filled with the viscous fluid; spherical solid particles are also arranged in the working cylinder body and suspended in the viscous fluid; a group of forward taper holes are uniformly distributed on the antisymmetric piston along the concentric circumference, and a group of reverse taper holes are uniformly distributed on the antisymmetric piston along the concentric circumference; the forward taper holes and the reverse taper holes are arranged at intervals in the radial direction. The invention relates to a symmetric damper which uses viscous fluid to excite solid particles to provide damping force and the damping force is gradually increased in bilateral symmetry.
Description
Technical Field
The invention mainly relates to the field of dampers, in particular to a symmetrical damper for fluid-excited solid particles to move.
Background
The damper of variable damping is an intelligent vibration-damping instrument, the existing damper is to install the piston in the working cylinder, and is full of magnetorheological fluid in the cylinder block, adjust the intensity of the magnetorheological fluid to realize the damping change through the power control, the existing damper of magnetorheological fluid needs to install certain circuit, consume certain power although realizing the variable damping; the viscosity change of the magnetorheological fluid limits the adjustment range of the damping force. Therefore, the symmetrical damping force which can realize variable damping without consuming electric energy has important significance.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the technical problems in the prior art, the invention provides a symmetrical damper which provides damping force by exciting solid particles through viscous fluid and the damping force is gradually increased in bilateral symmetry.
In order to solve the problems, the solution proposed by the invention is as follows: a symmetrical damper for fluid-excited solid particles comprises a working cylinder body, an end cover A and an end cover B which are arranged at two ends of the working cylinder body, an anti-symmetric piston arranged in the working cylinder body, and a piston rod arranged on the anti-symmetric piston, wherein the other end of the piston rod penetrates through a linear bearing arranged on the end cover B; the structure is characterized in that:
viscous fluid is filled in the inner space of the working cylinder body, and nine tenths of the inner space of the working cylinder body is filled with the viscous fluid;
spherical solid particles are also arranged in the working cylinder body and are suspended in the viscous fluid;
a group of forward taper holes are uniformly distributed on the antisymmetric piston along the concentric circumference, and a group of reverse taper holes are uniformly distributed on the antisymmetric piston along the concentric circumference; the forward taper holes and the reverse taper holes are arranged at intervals in the radial direction;
the forward taper hole and the reverse taper hole are similar in structure and are round through holes with variable cross sections; the maximum diameter of the circular through hole is smaller than the diameter of the spherical solid particles.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the symmetrical damper for fluid-excited solid particle motion utilizes partial blockage of the forward taper hole and the reverse taper hole on the antisymmetric piston and spherical solid particles to gradually increase the density of the spherical solid particles at the compression part, thereby improving the damping force of the piston motion. Therefore, the symmetrical damper has a simple and compact structure, and the solid particles are excited by the viscous fluid to block the flow holes, so that the damping force is improved.
Drawings
FIG. 1 is a schematic diagram of the structural principle of a symmetrical damper for fluid-excited solid particle motion according to the present invention.
In the figure, 1 — end cap a; 2-end cap B; 3, a working cylinder body; 4-a piston rod; 5-antisymmetric piston; 51-forward taper hole; 52-reverse taper hole; 6-spherical solid particles; 7-linear bearing.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the symmetrical damper for fluid-excited solid particles according to the present invention comprises a cylinder 3, end caps a1 and B2 installed at both ends of the cylinder 3, an anti-symmetric piston 5 installed inside the cylinder 3, and a piston rod 4 installed on the anti-symmetric piston 5, wherein the other end of the piston rod 4 passes through a linear bearing 7 installed on an end cap B2.
Referring to fig. 1, the inner space of the cylinder 3 is filled with a viscous fluid, which fills nine tenths of the inner space of the cylinder 3.
Referring to fig. 1, spherical solid particles are also arranged in the working cylinder body, and are suspended in the viscous fluid.
Referring to fig. 1, a group of forward taper holes 51 are uniformly distributed on the antisymmetric piston 5 along the concentric circumference, and a group of reverse taper holes 52 are uniformly distributed on the antisymmetric piston 5 along the concentric circumference; the forward taper holes 51 are radially spaced from the reverse taper holes 52.
Referring to fig. 1, the forward taper hole 51 and the reverse taper hole 52 are similar in structure and are circular through holes with variable cross sections; the maximum diameter of the circular through-holes is smaller than the diameter of the spherical solid particles.
The working principle is as follows: when the anti-symmetric piston 5 moves to the left, the reverse taper hole 52 is blocked by the spherical solid particles 6, so that the fluid basically does not flow, while the forward taper hole 51 can still allow the viscous fluid to pass through although being blocked by the partially spherical solid particles 6, and the acting force of the viscous fluid on the anti-symmetric piston 5 is a damping force; as the density of the spherical solid particles 6 on the left side of the antisymmetric piston 5 is gradually increased, the probability of blocking the forward taper hole 51 is also gradually increased, so that the fluidity of the viscous fluid is reduced, and the damping force of leftward movement is improved; when the antisymmetric piston 5 moves to the right, the forward taper hole 51 is blocked by the spherical solid particles 6, and basically no fluid flows, while the reverse taper hole 52 of the forward taper hole 51 can still allow viscous fluid to pass through although being blocked by the partially spherical solid particles 6, and the acting force of the viscous fluid on the antisymmetric piston 5 is damping force; as the density of the spherical solid particles 6 on the right side of the anti-symmetric piston 5 gradually increases, the probability of blocking the reverse taper hole 52 also gradually increases, so that the fluidity of the viscous fluid is reduced, thereby increasing the damping force for rightward movement.
Claims (1)
1. A symmetrical damper for fluid-excited solid particle motion comprises a working cylinder body (3), an end cover A (1) and an end cover B (2) which are arranged at two ends of the working cylinder body (3), an anti-symmetric piston (5) arranged in the working cylinder body (3), and a piston rod (4) arranged on the anti-symmetric piston (5), wherein the other end of the piston rod (4) penetrates through a linear bearing (7) arranged on the end cover B (2); the method is characterized in that:
viscous fluid is filled in the inner space of the working cylinder body (3), and nine tenth of the inner space of the working cylinder body (3) is filled with the viscous fluid;
spherical solid particles are also arranged in the working cylinder body and are suspended in the viscous fluid;
a group of forward taper holes (51) are uniformly distributed on the antisymmetric piston (5) along the concentric circumference, and a group of reverse taper holes (52) are uniformly distributed on the antisymmetric piston (5) along the concentric circumference; the forward taper holes (51) and the reverse taper holes (52) are arranged at intervals in the radial direction;
the forward taper hole (51) and the reverse taper hole (52) are similar in structure and are round through holes with variable cross sections; the maximum diameter of the circular through hole is smaller than the diameter of the spherical solid particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811140063.1A CN109236932B (en) | 2018-09-28 | 2018-09-28 | Symmetrical damper for fluid-excited solid particle motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811140063.1A CN109236932B (en) | 2018-09-28 | 2018-09-28 | Symmetrical damper for fluid-excited solid particle motion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109236932A CN109236932A (en) | 2019-01-18 |
| CN109236932B true CN109236932B (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811140063.1A Active CN109236932B (en) | 2018-09-28 | 2018-09-28 | Symmetrical damper for fluid-excited solid particle motion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112360914A (en) * | 2020-10-22 | 2021-02-12 | 同济大学 | Fluid-solid coupling inertial container |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3231255A (en) * | 1963-10-02 | 1966-01-25 | Dike O Seal Inc | Friction devices including shock absorbing dampers and the like |
| US3659835A (en) * | 1970-10-12 | 1972-05-02 | Gerald H Peterson | Impact kinetic energy absorber with automatic reset |
| DE4315857A1 (en) * | 1993-05-12 | 1994-11-17 | Karlheinz Menkhoff | Elastomeric impact damper |
| DE202008000984U1 (en) * | 2008-01-23 | 2008-03-20 | Härtwich, Erwin | Spring element with damping properties |
| CN201818696U (en) * | 2010-10-28 | 2011-05-04 | 广州大学 | Single piston rod viscous damper capable of setting initial stiffness |
| CN203477159U (en) * | 2013-10-16 | 2014-03-12 | 博尔德汽车零部件(海宁)有限公司 | Automobile shock absorber |
| CN105020325A (en) * | 2014-04-23 | 2015-11-04 | 青岛金佳美车辆装备有限公司 | Air suspension shock absorbing system for heavy vehicle |
| CN107956835B (en) * | 2017-11-10 | 2019-05-03 | 南京航空航天大学 | Controllable damping molecule spring vehicle suspension |
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2018
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| CN109236932A (en) | 2019-01-18 |
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Effective date of registration: 20230110 Address after: Room 1904, No. 617, sishuidao, Huli District, Xiamen City, Fujian Province, 361000 Patentee after: Fujian Yancheng Construction Engineering Co.,Ltd. Patentee after: CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP Co.,Ltd. Patentee after: Lang Lvyuan Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: CHANGZHOU University |
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