GB894598A - A device for generating mechanical vibrations - Google Patents
A device for generating mechanical vibrationsInfo
- Publication number
- GB894598A GB894598A GB40749/58A GB4074958A GB894598A GB 894598 A GB894598 A GB 894598A GB 40749/58 A GB40749/58 A GB 40749/58A GB 4074958 A GB4074958 A GB 4074958A GB 894598 A GB894598 A GB 894598A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pin
- dec
- chambers
- vibration
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/04—Monodirectional test stands
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
894,598. Oscillation machines. PROCHAZKA, M., and NAVRATIL, M. Dec. 17, 1958 [Dec. 30, 1957], No. 40749/58. Class 35. In a vibration generator for testing articles, pressure of fluid, e.g. air, in either of two chambers 10 or 11 is arranged to pre-stress the vibrator output pin 5, or to support the weight of the article. The volume of the chambers is comparatively large so that it changes little under vibration to keep the spring effect to a minimum; thus the natural frequency of the system is unaffected. The fluid pressure is variable and is transmitted to the pin via flexible, e.g. rubber diaphragms 22, 23 and rigid members 8, 9. Springs 6, 7 serve to locate the pin only. Attached to the pin is a moving coil 4 disposed in the gap between polepieces 2, 3<SP>11</SP> of an assembly which includes a permanent magnet 1. A vibration pick-up is provided comprising three stationary coils 12, 13, 14 and a permanent magnet 15 in the pin 5. The unit is pivotally supported in bearings 17, 18 and may be locked in any position by nuts 20, 21.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS894598X | 1957-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB894598A true GB894598A (en) | 1962-04-26 |
Family
ID=5456583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40749/58A Expired GB894598A (en) | 1957-12-30 | 1958-12-17 | A device for generating mechanical vibrations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB894598A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990014169A1 (en) * | 1989-05-16 | 1990-11-29 | Infrawave Technology A.S | Electromechanical transducer for low frequency vibrations |
| CN104646261B (en) * | 2013-11-25 | 2017-11-28 | 天津航天瑞莱科技有限公司 | A kind of jigging platform moving coil backward bearer device and the shake table comprising this device |
| CN112213061A (en) * | 2020-09-25 | 2021-01-12 | 中国直升机设计研究所 | Multidirectional excitation device and system for helicopter vibration active control system |
-
1958
- 1958-12-17 GB GB40749/58A patent/GB894598A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990014169A1 (en) * | 1989-05-16 | 1990-11-29 | Infrawave Technology A.S | Electromechanical transducer for low frequency vibrations |
| CN104646261B (en) * | 2013-11-25 | 2017-11-28 | 天津航天瑞莱科技有限公司 | A kind of jigging platform moving coil backward bearer device and the shake table comprising this device |
| CN112213061A (en) * | 2020-09-25 | 2021-01-12 | 中国直升机设计研究所 | Multidirectional excitation device and system for helicopter vibration active control system |
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