PL49540B1

PL49540B1 -

Info

Publication number: PL49540B1
Application number: PL102145A
Authority: PL
Original assignee: „Rhewum" Rheinische Werkzeug — Und Maschinenfabrik Gmbh Remscheid — Luttiunghausen
Filing date: 1963-07-13
Publication date: 1965-04-15

Description

Na fig. 6 pokazano równiez droge ruchu ma¬ terialu przesiewanego przy lewostronnym wywie¬ raniu impulsów a2 = 50 Hz i prawostronnym 10— —2 Hz jako skok albo uderzenie przy odstepie czasowym 80 :20. Wynalazek obejmuje wszystkie mozliwe odmiany napedu zarówno co do czesto¬ tliwosci, jak i odstepów czasowych co latwo zro¬ zumiec z obu przykladów, przedstawionych na fig. 4 i 5.Fig. 6 przedstawia zasade dzialania urzadzenia napedowego z elektromagnesem 2 i kotwica 3, której stale ramiona 4 i 6 sa podparte z obu stron.Koniec ramienia 4 jest osadzony w lozysku 5, za¬ mocowanym w przegubie obrotowym, a stale ra¬ mie 6 kotwicy ma wolny zawnetrzny koniec 7, który sluzy jako nadajnik impulsów. Kotwica 3 ma przy tym skosna powierzchnie od strony mag¬ nesu, a lezace naprzeciw siebie powierzchnie elek¬ tromagnesu i kotwicy, w przypadku przyciagania, jak pokazano na fig. 7, sa wzgledem siebie rów¬ nolegle. Zamiast obrotowego lozyska 5 mozna za-49540 8 stosowac, w przypadku stalych ramion kotwicy przegub gumowy.Na fig. 7 przedstawiono schematycznie szczegól¬ nie korzystny przyklad wykonania urzadzenia na¬ pedowego wedlug wynalazku. W tym przypadku ramiona 4 i 6 kotwicy 3 sa wykonane z silnych plaskich sprezyn, a ramie 4 jest zamocowane trwale w lozysku. Po uruchomieniu elektromag¬ nesu na wytwarzanie amplitudy drgan wolnego konca ramienia 6 ma wplyw sprezystosc wlasna materialu.Naped przedstawiony na fig. 8 rózni sie od na¬ pedu na fig. 7 tylko tym, ze elektromagnes jest umieszczony w polozeniu ukosnym, a kotwica ma powierzchnie, znajdujaca sie na przeciwleglej stronie elektromagnesu, o ksztalcie prostym tak, ze powierzchnie magnesu i kotwicy w przypadku przyciagania sa wzgledem siebie równolegle, jak to przedstawiono na rysunku linia przerywana.Na fig. 9. przedstawiono urzadzenie napedowe, zaopatrzone w dodatkowa nastawna nakladke 10, która jak juz opisano wyzej, ma na celu zapobie¬ zenie wypadnieciu kotwicy ze sfery przyciaga¬ nia elektromagnesu pod dzialaniem sily zwrotnej napedzanej maszyny na wolny koniec 7 ramie¬ nia 6 kotwicy. Ta nakladka moze równiez sluzyc do nakladania na drgania kotwicy fal o wiekszej czestotliwosci wytwarzanych przez nakladke. Po¬ nadto kotwica moze równiez opierac sie na na¬ kladce w stanie spoczynku.Na fig. 10 przedstawiono zasadniczo takie same urzadzenie, jak na fig. 9, jedynie z ta róznica, ze na wolnym koncu 7 ramienia 6, który z zamoco¬ wanym ramieniem 4 tworzy w danym przypadku jedno sprezyste ramie, zaznaczona jest pewna ma¬ sa, odpowiadajaca w przyblizeniu masie sita 8 na fig. 1—5.Na fig. 11 pokazano schematycznie sposób dzia¬ lania elektromagnesu. Okazuje sie przy tym, ze ciezar 7, zamocowany na wolnym koncu ramion kotwicy powoduje opóznienie drgan w stosunku do kotwicy 3 tak, ze drgania na wolnym koncu tych ramion sa przesuniete w fazie w stosunku do drgan kotwicy.Na fig. 12 i 13 przedstawiono zasade dzialania jednego z elementów sterujacych do zmiennego nadawania impulsów. Na walku 19 jest zamoco¬ wana izolujaca tarcza 16, napedzana przez silnik o zmiennej liczbie obrotów. Tarcza izolujaca za¬ wiera kontaktowe zwierajace powierzchnie 17, rozmieszczone wspólosiowo, które, zaleznie od tego jaki zostanie wybrany system nadawania impulsów, dzialaja punktowo lub liniowo. Kontak¬ towe powierzchnie zwierajace sa rozmieszczone na obwodzie kola, a powierzchnie kontaktowe 17a, zaznaczone linia przerywana sa rozmieszczone na obwodzie drugiego kola.Na fig. 13 przedstawiono jak impulsy elektrycz¬ ne moga byc odbierane poprzez powierzchnie kon¬ taktowe zwierajace. Pradowe odbieraki 18 sa po¬ laczone z szeregiem elektromagnesów maszyny do przesiewania, a odbieraki 18a moga byc polaczone z przeciwleglym szeregiem elektromagnesów.Na przykladzie przedstawionym na fig. 12 i 13 elektromagnesy polaczone z odbierakami 18 otrzy- 20 muja 2X3 impulsy przy jednym obrocie tarczy izolujacej, przy czym trwalosc impulsów jest róz¬ na odpowiednio do dlugosci kontaktowych zwie¬ rajacych powierzchni 17. Natomiast szereg elek- 5 tromagnesów, przylaczonych do odbieraków 18a otrzymuje przy tym samym obiegu izolujacej tar¬ czy 16 tylko 1X2 impulsy równiez o róznej dlu¬ gosci. Z tego przykladu widac, jakie mozliwosci róznych ukladów mozna osiagnac za pomoca io urzadzenia napedowego wedlug wynalazku. PLFIG. 6 also shows the path of movement of the screen material with the left-hand impulse of a2 = 50 Hz and the right-hand 10-2 Hz as a jump or shock at a time interval of 80:20. The invention covers all possible variations of the drive in terms of both frequency and time intervals, which can be readily understood from both the examples shown in Figs. 4 and 5. 6 shows the principle of operation of a drive device with an electromagnet 2 and an anchor 3, the arms 4 and 6 of which are constantly supported on both sides. The end of the arm 4 is embedded in a bearing 5 fixed in a swivel joint, and the arm 6 of the anchor is permanently free. outer end 7 which serves as a pulse generator. The anchor 3 has a sloping surface on the magnet side, and the opposing surfaces of the electromagnet and the anchor, in the event of a pull, are parallel to each other, as shown in FIG. 7. Instead of the rotatable bearing 5, a rubber hinge may be used for the fixed anchor arms. FIG. 7 schematically shows a particularly preferred embodiment of a pumping device according to the invention. In this case, the arms 4 and 6 of the anchor 3 are made of strong flat springs and the arm 4 is firmly fixed in the bearing. When the electromagnet is actuated, the generation of the vibration amplitude of the free end of the arm 6 is influenced by the inherent elasticity of the material. The drive shown in Fig. 8 differs from that in Fig. 7 only in that the electromagnet is placed in an oblique position and the anchor has surfaces on the opposite side of the electromagnet, rectangular in shape so that the surfaces of the magnet and the anchor in the event of attraction are parallel to each other as shown in the dashed line. Figure 9 shows a drive device provided with an additional adjustable pad 10, which, as has already been described above, is intended to prevent the anchor from falling out of the electromagnet attraction sphere under the action of the feedback force of the driven machine on the free end 7 of the anchor arm 6. This overlay may also be used to superimpose the higher frequency waves generated by the overlay on the vibration of the anchor. Moreover, the anchor may also rest on the cap in a resting state. Fig. 10 shows substantially the same device as in Fig. 9, with the only difference that at the free end 7 of the arm 6, which is attached with the arm 4 forms one elastic frame in the given case, a certain mass is marked which corresponds approximately to the mass of the screen 8 in Figs. 1-5. Fig. 11 shows schematically the operation of the electromagnet. It turns out that the weight 7 attached to the free end of the anchor arms causes a vibration delay in relation to the anchor 3 so that the vibrations at the free end of these arms are out of phase with respect to the vibration of the anchor. Figs. 12 and 13 show the principle operation of one of the control elements for alternating pulses. Mounted on the shaft 19 is an insulating disc 16 driven by a variable speed motor. The insulating disc includes coaxial contact surfaces 17 which, depending on the selected pulse transmission system, act in a point or linear manner. The contact surfaces 17a are disposed on the circumference of the wheel and the contact surfaces 17a, marked with a dotted line, are distributed along the circumference of the second wheel. Figure 13 shows how electrical pulses can be received through the contact surfaces. The current collectors 18 are connected to a series of electromagnets of the screening machine and the collectors 18a can be connected to an opposite series of electromagnets. In the example shown in Figs. the duration of the pulses varies according to the length of the contact surfaces 17. On the other hand, a series of electromagnets connected to the collectors 18a receive only 1 × 2 pulses of different length in the same circuit of the insulating shield 16. From this example it can be seen which possibilities of the various systems can be achieved with the aid of the drive device according to the invention. PL

Claims

Claims 1. Drive apparatus for material enrichment machines, for example machines for dewatering, compacting, screening, sorting, etc., comprising a pulse generator, for example an alternating current electromagnet, a vibrating anchor placed in its magnetic field and an impact transmitter or moved by the anchor and acting on or connected to the driven machine, characterized in that it has a lever attached on one side, connected to the anchor (3) and stimulated to vibrate at its free end with two degrees of freedom.

2. Device according to claim A device as claimed in claim 1, characterized in that the free arm (6) acting as a pulse generator has at its free end a driven machine element 30 exposed to vibration.

3. Device according to claim A device as claimed in any of claims 1 and 2, characterized in that the lever fastened to one side, together with the anchor (3), with the free arm (6) and the driven machine element 35 supported on the arm, forms a vibration system.

4. Device according to claim A device as claimed in any of the preceding claims, characterized in that it is provided with a fixed or relieved and / or adjustable pad (10).

5. Device according to claim The anchor (3) has a frame (4) mounted on the base (1) or in the pulse transmitter housing in a rubber bearing or in a pivoting joint on the side fixed on it. freely moving in the direction of the vibrations produced, or it has a strongly resilient frame (4), the end of which is permanently attached to the base (1) or to the housing of the pulse transmitter.

6. Device according to claim A method according to any of the claims 1-5, characterized in that the frame (6) placed on the free side of the anchor (3) is made of a more or less hard or resilient material, for example spring steel.

7. Device according to claim 1-6, characterized by the fact that the arms (4, 6) of the anchor (3) are made in the form of rods or bands and are attached as individual arms on both sides of the anchor (3) or are made in the form of one rod or band on which it sits (3).

8. Device according to claim 1-7, characterized by the fact that when the electromagnet (2) is used as a pulse transmitter, the front surface of the electromagnet and the surface of the anchor (3) opposite to the electromagnet, in relation to the arc of the wheel defined from the lever mounting point, constituting the path of movement of the lever to the electromagnet and from the electromagnet at the moment of the greatest attraction, they are parallel to each other.

9. Device according to claim According to claim 8, characterized in that the electromagnet (2) is controlled by an alternating current through transformers or by rectifiers or also by a program control device with interchangeable programs, the fundamental vibrations being superimposed high-frequency vibrations in a known manner by controlling the magnitude of amplitudes, for example with overlays.

Device according to claims 1-9, characterized in that it comprises a plurality of impulse transmitters (2), arranged for example side by side and opposite each other or side by side on a closed curve and bearing on the free arms (6). of the anchor (3) surfaces exposed to the vibrations of the free ends of the arms.

11. Device according to claim 1 to 10, characterized in that it has two opposing rows of pulse transmitters in a multiple arrangement supporting between each other a screen fabric, which may be more or less stretched or hanging, the edges of the screen being provided with slats (9) connected to the ends of the free arms (6) of the anchor. 10

12. Device according to claim 11. A method according to claim 11, characterized in that each series of multiple pulse transmitters is arranged on a plate (1) of the screening machine base, the plates (1) being slidably mounted in relation to each other in the direction of the screen width and adjustable in relation to each other. slope.

13. Device according to claim A method according to any one of claims 1 to 12, characterized in that the pulse transmitters in a multiplex are known in a known manner exposed to different vibrations individually in groups or in series.

14. Device according to claim A program according to any of the claims 1-13, characterized in that when the electromagnets (2) are used as impulse transmitters, a software control device is provided for actuating the individual transmitters, depending on the frequency, intensity and duration of the pulses. this

15. Device according to claim A device as claimed in claim 14, characterized in that, as the program control device, it has contact discs (10) of variable circumferential speed driven by a motor, the contact surfaces (17, 17a) being disposed pointwise or linearly on one or more concentric circles. around the pivot point of the discs (16). ) 49540 ~ / g. i n is49540 17a 17 17a 17 16 PL