EP0201050A2 - Générateur de vibrations à plusieurs balourds dans un carter, en particulier pour des convoyeurs vibrants utilisés dans les exploitations minières - Google Patents

Générateur de vibrations à plusieurs balourds dans un carter, en particulier pour des convoyeurs vibrants utilisés dans les exploitations minières Download PDF

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Publication number
EP0201050A2
EP0201050A2 EP86106000A EP86106000A EP0201050A2 EP 0201050 A2 EP0201050 A2 EP 0201050A2 EP 86106000 A EP86106000 A EP 86106000A EP 86106000 A EP86106000 A EP 86106000A EP 0201050 A2 EP0201050 A2 EP 0201050A2
Authority
EP
European Patent Office
Prior art keywords
unbalance
shaft
unbalances
vibration
housing
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.)
Ceased
Application number
EP86106000A
Other languages
German (de)
English (en)
Other versions
EP0201050A3 (fr
Inventor
Heinrich Haake
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.)
Mueller Herne Pumpen Maschinen Stahlbau GmbH
Original Assignee
Mueller Herne Pumpen Maschinen Stahlbau GmbH
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 Mueller Herne Pumpen Maschinen Stahlbau GmbH filed Critical Mueller Herne Pumpen Maschinen Stahlbau GmbH
Publication of EP0201050A2 publication Critical patent/EP0201050A2/fr
Publication of EP0201050A3 publication Critical patent/EP0201050A3/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase

Definitions

  • the invention relates to a vibration exciter with a plurality of unbalances in a housing according to the preamble of claim 1.
  • the invention relates in particular to vibration exciters for vibrating conveyor troughs in underground operations.
  • such vibratory conveyor troughs serve as extraction devices under bunkers, which in the main or in the bypass one via continuous conveyors, e.g. Conveyor belts are continuously arranged to extract coal, more rarely from mountains.
  • bunkers serve as temporary storage if the conveying capacity of the continuous conveyors is insufficient to cope with the conveyed volume.
  • the vibrating conveyor trough is then arranged in the outlet of the bunker and serves as a feeder for a downstream continuous conveyor and as a bunker closure.
  • the vibration exciter is usually attached to the rear crossmember of the vibrating trough.
  • the invention therefore relates to a vibration exciter which can be designed for high performance.
  • Such vibration exciters generate the vibration energy by an electric motor.
  • the direction of vibration is horizontal at a certain swing angle.
  • a reciprocating process is advantageous.
  • Vibration exciters driven by an electric motor make it possible to meet practically any performance requirements.
  • the conveying effect in a vibrating trough then occurs in that the unbalances, which are usually formed by eccentric disks, and the vibrating trough carry out rectilinear and mutually directed oscillating movements with the weight of the electromotive drive and the housing of the vibration exciter.
  • Electromagnetic vibration exciters can be easily and continuously controlled. This makes it possible to control and regulate the flow of the conveyed material running over the vibrating trough during operation.
  • a control system can include a belt position, which is arranged in front of the bunker outlet and adjusts the bunker discharge in inverse proportion to the amount conveyed on the belt.
  • the limited performance of the electromagnetic vibration exciter has so far prevented such controls or regulations from being used in corresponding applications of underground operations.
  • the invention is based on a vibration exciter with an electric motor drive (DE-PS 29 09 204).
  • one of the unbalances is fixed on its unbalanced shaft; a second unbalance is pivotally mounted on its unbalanced shaft.
  • the unbalance can therefore only be controlled with a correspondingly low effect.
  • the shaft of the pivotable unbalance is designed for adjustment during operation as a cylinder of a hydraulic servomotor, the piston of which engages with a pin in a spiral groove of a stub shaft and thereby changes the eccentricity of the unbalanced mass depending on the pressure applied. Since the cylinder opening is located in a pressure chamber fixed to the housing, the adjustment can be brought about independently of the rotational movement of the unbalanced shaft.
  • the invention has for its object to provide an electric motor-driven vibration exciter of the type presupposed as known so that the chamfer position of the unbalance can be adjusted effectively and in a simple manner regardless of the speed of the unbalanced shaft and the size of the unbalanced masses continuously and practically without inertia.
  • the adjustment gear required for this is a mechanical gear, the components and bearings of which can be adapted to the stresses during operation of the vibration exciter.
  • These are the entrained hollow shafts, which act as connecting links in the kinematic chain extending from an adjuster located outside the housing and form the input of the toothed gear with which the eccentricity of the concerned one Unbalance is changed.
  • the invention has the advantage that the slider can be adjusted by an actuator arranged outside the housing, which forms the prerequisite for a step-free and inertia-free adjustment of the 'eccentricity of the unbalance during operation. Since the adjusting mechanism is practically self-locking overall, each eccentricity once set is held by the servomotor and is therefore not easily exposed to unpredictable changes during operation. You can also change the eccentricity in the same way during breaks when you operate the actuator accordingly. In many cases, however, it may be beneficial to exclude the arbitrary intervention from outside. Among other things therefore, under such circumstances, the motorized adjustment is preferred to the manual adjustment that is also possible according to the invention.
  • the eccentricity of the unbalance is changed by pivoting, whereby the eccentricity of the center of gravity of the unbalance is adjusted. This results in a further improvement in the fine adjustment.
  • the features of claim 5 make it possible to pre-set the dimensions and the eccentricity of the unbalances during breaks in operation, bypassing the adjustment gear. This makes it possible to start with a change in the eccentricity of the unbalance during operation from a preselected value which results from the respective operating conditions.
  • the vibration exciter shown in FIG. 1, generally designated 1, has several unbalances 2, 3, which are shown in their extreme positions in the illustration in FIG. 1.
  • Modified bevel lag can be identified by two unbalanced representations on each imbalance.
  • the imbalances are housed in a housing, generally designated 42.
  • the drive takes place via a clutch 3 by an electric motor, wherein a cardan shaft can be connected between the clutch 3 and the motor shaft in order to set up the motor outside the oscillating system.
  • the vibration exciter shown is suitable for use on the crossbar of a vibratory conveyor of underground operations, which, as explained at the beginning, forms the closure and the discharge of a bunker.
  • the two imbalances 2, 3 are arranged in different vertical planes, but otherwise in a corresponding manner. They are seated on a hub 4, 5, which in turn is fixed with a radially arranged grub screw 6 or 7 on a solid shaft 8 or 9 in a rotationally and thrust-resistant manner.
  • the shafts 8, 9 serve as unbalance shafts, which cause the unbalances 2, 3 to rotate via the hubs 4, 5.
  • the shafts are coupled with a spur gear 10, 11 and with the same Speed driven.
  • Each unbalanced shaft 8, 9 has a hollow shaft 12, 13 concentrically on the outside. Each hollow shaft is seated in a roller bearing 14, 15 of a slide 16. The hollow shafts 12, 13 are thus mounted in the slide 16 in a thrust-resistant manner. As a result of the arrangement of the two unbalances 2, 3 in planes lying next to one another, the hollow shaft 13, which is assigned to the unbalanced shaft 9 of the unbalanced mass 2, is mounted on a slide bearing 17 opposite the shaft 9. This is due to the fact that the hollow shaft 13 is longer than the hollow shaft 12 because the unbalance 2 is further away from the slide 16 than the unbalance 4. Both hollow shafts therefore guide the disc-shaped body of the slide when it is moved.
  • the slider 16 can be moved with the aid of a spindle 18, which can be rotated via a shaft 19 by a handwheel (not shown) or via an actuator, parallel to the unbalanced shafts 8, 9 or the hollow shafts 12, 13 described.
  • a spindle 18 On the ends of the hollow shafts there are toothed racks 20, 21 which mesh with pinions 22, 23 which are arranged in a rotationally fixed manner on articulated shafts 24, 25 of swivel joints 26, 27.
  • the rotatable part of the rotary joints 26, 27 is formed by the unbalances 2, 3.
  • the geometrical axes of the rotary joints run perpendicular to the geometrical axes of the shafts 8, 9 and 12, 13.
  • an arrangement for adjusting the slide 16 is shown, which is mainly considered for the electromotive drive of the slide 16.
  • the two shafts are each supported in a bearing 37, 38 and 39, 40 at both ends and provided at one end with a projection 41, 42 which has key surfaces.
  • a correspondingly designed recess in the shafts 8, 9 receives the projections 41 and 42 in a form-fitting manner when the front housing 32 is screwed to the housing 2. These recesses are normally closed with lids 43, 44.
  • each imbalance 2, 3 carries two guide strips 60, which form a link guide for a projection 61 in which the elongated hole 59 is recessed.
  • the fixed part of the link guide is formed by the respective hub 4, 5.
  • Worm wheel 28 which is driven by means of a worm 29 on a worm shaft 30.
  • the worm shaft 30 is led out of the housing.
  • the shaft 19 is therefore mounted in the end wall 31 of the housing.
  • the unbalance shaft 8 is rotated via the clutch 3, as a result of which the unbalanced shaft 9 also rotates with the unbalanced shaft 8 as a result of its connection by the additional gear 10, 11. If the unbalances are in the position shown with solid lines, their eccentricity reaches their maximum. As soon as the spindle 18 is rotated via the shaft 19, the slide 16 is axially displaced and takes the hollow shafts 12, 13 with it. As a result, the racks 20, 21 move relative to the pinions 22, 23 of the rotary joints 26, 27, as a result of which the unbalances 2, 3 are pivoted. This change reduces the eccentricity of the unbalances 2, 3 and thus the desired vibration.
  • the vibration exciter 1 can be used in the context of a control system which changes the delivery rate of the vibration channel via the worm shaft 30 by an electric motor.
  • the unbalanced masses can be preset.
  • the unbalance 33 supplements the unbalance 2 via its shaft 34, while the unbalance 35

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigging Conveyors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP86106000A 1985-05-04 1986-05-01 Générateur de vibrations à plusieurs balourds dans un carter, en particulier pour des convoyeurs vibrants utilisés dans les exploitations minières Ceased EP0201050A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853516145 DE3516145A1 (de) 1985-05-04 1985-05-04 Schwingungserreger mit mehreren unwuchten in einem gehaeuse, insbesondere fuer schwingfoerderrinnen des untertagebetriebes
DE3516145 1985-05-04

Publications (2)

Publication Number Publication Date
EP0201050A2 true EP0201050A2 (fr) 1986-11-12
EP0201050A3 EP0201050A3 (fr) 1987-08-26

Family

ID=6269890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106000A Ceased EP0201050A3 (fr) 1985-05-04 1986-05-01 Générateur de vibrations à plusieurs balourds dans un carter, en particulier pour des convoyeurs vibrants utilisés dans les exploitations minières

Country Status (2)

Country Link
EP (1) EP0201050A3 (fr)
DE (1) DE3516145A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406480A3 (en) * 1989-07-06 1991-12-11 Mueller Gmbh Herne Pumpen, Maschinen, Stahlbau Vibrator with rotating masses
FR2667517A1 (fr) * 1990-10-09 1992-04-10 Lm Electronique Dispositif de vibration.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8800592U1 (de) * 1988-01-20 1988-03-10 Rhein-Getriebe Gmbh, 4005 Meerbusch Rüttelgetriebe
US6769838B2 (en) 2001-10-31 2004-08-03 Caterpillar Paving Products Inc Variable vibratory mechanism
CN101837341B (zh) * 2009-03-14 2012-01-11 李卓 一种激振器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE622582A (fr) * 1961-09-18
GB1048612A (en) * 1963-01-25 1966-11-16 Gen Mills Inc Variable thrust oscillator
DE1483409B2 (de) * 1965-03-06 1971-12-30 Ing. Otto Schwarz Maschinenbau, 8710 Kitzingen Ruettelmotor
FR1512553A (fr) * 1966-12-29 1968-02-09 Strasbourg Forges Perfectionnements apportés au réglage des appareils vibratoires
CH476379A (de) * 1968-11-15 1969-07-31 Sprecher & Schuh Ag Metallgekapselte gasisolierte Hochspannungsleitung
GB1374517A (en) * 1972-03-23 1974-11-20 Simonacco Ltd Vibrating devices
DE2736264A1 (de) * 1977-08-11 1979-03-01 Schlosser & Co Gmbh Schwingungserreger, insbesondere fuer verdichtungsruettler
DE2909204C2 (de) * 1979-03-09 1982-08-19 Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen Schwingungserreger mit zwei Unwuchten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406480A3 (en) * 1989-07-06 1991-12-11 Mueller Gmbh Herne Pumpen, Maschinen, Stahlbau Vibrator with rotating masses
FR2667517A1 (fr) * 1990-10-09 1992-04-10 Lm Electronique Dispositif de vibration.

Also Published As

Publication number Publication date
DE3516145A1 (de) 1986-11-06
EP0201050A3 (fr) 1987-08-26

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Inventor name: HAAKE, HEINRICH