US3298456A - Electromechanical vibrators - Google Patents

Electromechanical vibrators Download PDF

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Publication number
US3298456A
US3298456A US378834A US37883464A US3298456A US 3298456 A US3298456 A US 3298456A US 378834 A US378834 A US 378834A US 37883464 A US37883464 A US 37883464A US 3298456 A US3298456 A US 3298456A
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US
United States
Prior art keywords
blades
pedestal
mass
lever
blade
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 - Lifetime
Application number
US378834A
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English (en)
Inventor
Picou Claude
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CIE GENERALE DE GEOPHYSIQUE AN
GENERALE DE GEOPHYSIQUE AND INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS Cie
Original Assignee
CIE GENERALE DE GEOPHYSIQUE AN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CIE GENERALE DE GEOPHYSIQUE AN filed Critical CIE GENERALE DE GEOPHYSIQUE AN
Application granted granted Critical
Publication of US3298456A publication Critical patent/US3298456A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02—Generating seismic energy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02—Generating seismic energy
    • G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
    • G01V1/155—Generating seismic energy using mechanical driving means, e.g. motor driven shaft using reciprocating masses

Definitions

  • This invention relates to vibration generators intended chiefiy for the generation in the ground of seismic waves and of the type incorporating a matching system constituted by a system of levers the ends of which are connected respectively with a vibratory coil and with the pedestal of the apparatus, which pedestal rests on the ground while an intermediate point of each lever is connected with a station-ary mass incorporating the magnetic circuit producing Ithe field inside which the vibratory coil moves.
  • the pivotal connections of the levers the number of which is three for each lever are constituted by yielding blades set in a support provided for their ends 'and the movements of which are allowed by reason of the elasticity of the medial section of each blade,
  • the three pivotal blades When the three pivotal blades are arranged vertically and provided they are sufficiently short so as to avoid any bending, which condition is readily satisfied, they form a very ⁇ rigid suspension which prevents shifting with reference to the pedestal of the assocated member and movable system.
  • the alignment of the centers of the blades prevents with an approximation of the first order any modification in the horizontal spacing between one extreme outer blade and ⁇ the intermediate movable blade connected with the stationary mass.
  • FIG. l is a general view of a vibrator acconding to the present invention.
  • FIG. 2 is a top view of the vibrator
  • FIG. 3 a cross-section on an enlarged scale of one ofthe levers with its pivotal elastic blades.
  • ⁇ the drawing is illustrated a disc secured to the movable coil, a central spindle 9 forming part of the mov- 3,298,456 Patented Jan. 17, 1967 ICC able system including said coil and moving in unison with the latter the pedestal 4 of the vibrator, and the mass 3.
  • Said mass rests on a plate 20 suspended by means of tractionally operating springs 7 the upper ends of which are secured to short uprights 5 connected with the pedestal 4, said uprights extending through openings formed in the plate 20.
  • the levers 11 are shown connecting together the movable system, the mass 3 and the pedestal.
  • connection between the lever 11 and the mass 3 is effected by means of an elastic blade 14 extending vertically, said blade being set at its upper end inside the body of the lever 11 while its lower end is set inside a bracket 21 rigidly secured to the mass 3.
  • the elastic blades positioned at the ends of the levers 11 and connecting said ends on the one hand with the movable system and on the other hand with the pedestal are also advantageously arranged vertically.
  • the vertical elastic blade 22 more particularly has an upper end which is set inside the upper end of the lever 11 while its lower end is set inside a member 23 secured to the spindle 9 carrying the movable system.
  • an elastic blade 24 is arranged vertically the upper end of which -is set inside the body of the lever 11 while its lower end is set inside a plate 12 rigidly secured by bolts to the uprights 5, whereby said plate 12 forms mechanically part of the pedestal 4 ofthe apparatus.
  • the vibrator includes preferably, but not necessarily three such levers.
  • each elastic blade is to be considered as formed by the middle point of the portion of said blades which is not positioned inside another part. More accurately, said centers are constituted geometrically by straight lines which are all parallel with one another.
  • said centers that is the three straight lines considered extend accurately in a common plane as shown more clearly in FIG. 3 where the horizontal plane containing the three blades is shown by a dotted line 25 onto which are projected in the plane of FIG. 3 the straight lines defining said centers, to wit: 26 for the blade 14, 27 for the blade 22 and 28 for the blade 24.
  • the blades are comparatively broad for the outer ends of the levers and are narrower for the inner ends thereof, which allows said blades to resist more reliably any lateral stresses which may be exerted on the movable system.
  • the length of the portions of the blades which are not set inside another part is of a magnitude of about 4 mm. whereas the blades have a thickness of a few tenths of a mm.
  • the vertical arrangement of the blades allows them to absorb without any diiculty any modifications in the spacing appearing, under the action of vibrations, between the movable system including the member 23, the bracket 21 and the member 12.
  • a seismic vibrator comprising a pedestal adapted to rest on the ground, a mass supported from the pedestal and adapted for containing a magnetic circuit, and a movable system supported from the mass and adapted for containing a coil cooperating with the magnetic circuit, a plurality of levers conected respectively with the pedestal, the mass and the movable system, and three blades associated with each lever and extending in three vertical planes, each blade having one end se-t in the associated lever, said three blades having other ends respectively set in Vsaid pedestal, mass and movable system, said three blades havin-g a central transverse line lying in the same horizontal plane.
  • a vibrator as claimed in claim 1 comprising means resiliently supporting said mass on 4said pedestal.
  • a vibrator as clamied in claim 3 wherein the latter siad means comprises uprights on said pedestal, a platform supporting said mass and springs connecting the platform to Isaid uprights.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
US378834A 1963-07-16 1964-06-29 Electromechanical vibrators Expired - Lifetime US3298456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR941537A FR85403E (fr) 1963-07-16 1963-07-16 Perfectionnements aux vibrateurs électro-mécaniques

Publications (1)

Publication Number Publication Date
US3298456A true US3298456A (en) 1967-01-17

Family

ID=8808367

Family Applications (1)

Application Number Title Priority Date Filing Date
US378834A Expired - Lifetime US3298456A (en) 1963-07-16 1964-06-29 Electromechanical vibrators

Country Status (5)

Country Link
US (1) US3298456A (de)
DE (1) DE1247719B (de)
ES (1) ES302123A2 (de)
FR (1) FR85403E (de)
NL (1) NL6408145A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4850449A (en) * 1986-06-16 1989-07-25 The Standard Oil Company Piezoelectric seismic vibration device and method
US5005665A (en) * 1986-06-16 1991-04-09 The Standard Oil Company Piezoelectric seismic vibration device and method
WO1994002007A1 (en) * 1992-07-15 1994-02-03 Zebco Corporation Continuous anti-reverse mechanism for a fishing reel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1753368A (en) * 1919-09-23 1930-04-08 Firm Signal Ges M B H Subaqueous sound-producing device
DE836497C (de) * 1945-12-03 1952-04-15 Philips Nv Mit einer Membran versehenes Schwingungssystem, insbesondere elektrodynamisches System, z.B. fuer Mikrophone, Lautsprecher, Schwingungsaufnehmer usw.
US2620766A (en) * 1950-03-20 1952-12-09 Sonic Res Corp Generation and transmission of sound pulses
US3143181A (en) * 1961-12-06 1964-08-04 Continental Oil Co Seismic transducer and cushioning device therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1753368A (en) * 1919-09-23 1930-04-08 Firm Signal Ges M B H Subaqueous sound-producing device
DE836497C (de) * 1945-12-03 1952-04-15 Philips Nv Mit einer Membran versehenes Schwingungssystem, insbesondere elektrodynamisches System, z.B. fuer Mikrophone, Lautsprecher, Schwingungsaufnehmer usw.
US2620766A (en) * 1950-03-20 1952-12-09 Sonic Res Corp Generation and transmission of sound pulses
US3143181A (en) * 1961-12-06 1964-08-04 Continental Oil Co Seismic transducer and cushioning device therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4850449A (en) * 1986-06-16 1989-07-25 The Standard Oil Company Piezoelectric seismic vibration device and method
US5005665A (en) * 1986-06-16 1991-04-09 The Standard Oil Company Piezoelectric seismic vibration device and method
WO1994002007A1 (en) * 1992-07-15 1994-02-03 Zebco Corporation Continuous anti-reverse mechanism for a fishing reel

Also Published As

Publication number Publication date
NL6408145A (de) 1965-08-25
ES302123A2 (es) 1965-09-01
DE1247719B (de) 1967-08-17
FR85403E (fr) 1965-08-06

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