DK171638B1

DK171638B1 - Arrangement in a motor-driven drive roller for conveyor belt

Info

Publication number: DK171638B1
Application number: DK32194A
Authority: DK
Inventors: Alvin Aksel Christensen
Original assignee: Danrol
Priority date: 1994-03-18
Filing date: 1994-03-18
Publication date: 1997-03-03
Also published as: DK32194A

Description

DK 171638 B1DK 171638 B1

Opfindelsen angår en anordning ved en motordrevet drivtromle med en i denne anbragt drivmotor til drift af transportbånd, hvilken anordning er af den art, der er angivet i indledningen til krav 1.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a device for a motor driven drum having a drive belt drive motor disposed therein which is of the kind set forth in the preamble of claim 1.

5 Fra GB-patentskrift nr. 934.735 kendes en omløbsrulle til passiv returstyring af et endeløst transportbånd, der drives af en ved båndets modsatte omløbsende anbragt drivmotor. Til spænding af transportbåndet indbefatter omløbsrullens leje en udragende lejret forskydningsskrue 7, 9, 10 ved hvis betjening der tilvejebringes en spændingen regulerende trækkraft.From GB patent specification 934,735 a bypass roll is known for passive return control of an endless conveyor belt driven by a drive motor located at the opposite orbital end of the belt. For tensioning the conveyor belt, the bearing of the by-pass roller includes a protruding bearing shear screw 7, 9, 10 at whose actuation a voltage regulating traction is provided.

Fra den internationale patentansøgning nr. WO 93/18990, se især fig. 2, kendes en anordning af den i indledningen til patentkrav 1 angivne art, hvori den ikke-ro-15 terende aksel er udrejeligt forbundet med to drejningsankere, i den ene ende ved hjælp af en sætskrue og i den anden ved hjælp af en gennemgående tap. Sætskruen og tappen udfylder ikke andre funktioner end den nævnte. Dersom det ene eller begge af drejningsankerne skal kunne indstilles på tværs af 20 drivtromlens omdrejningsakse, må dette ske ved hjælp af særlige organer, f.eks. indstillelige slæder eller lignende, hvori drejningsankerne er forankret.From International Patent Application No. WO 93/18990, see in particular fig. 2, a device of the kind specified in the preamble of claim 1 is known in which the non-rotating shaft is extendably connected to two pivot anchors, at one end by means of a set screw and at the other by means of a through pin . The set screw and pin do not perform any functions other than the one mentioned. If one or both of the pivot anchors must be adjustable across the axis of rotation of the drive drum, this must be done by means of special means, e.g. adjustable slides or the like in which the pivot anchors are anchored.

Det er på denne baggrund opfindelsens formål at anvise udformningen af en drivtromle af den indledningsvis nævnte 2 5 art, der i sammenligning med det fra GB-patentskrift nr. 934.735 kendte omløbsrulleleje er særlig stabil til overføring af den fra en drivmotor på transportbåndet direkte udøvede aktive trækkraft, og i sammenligning med den fra WO 93/18990 kendte anordning er betydeligt forenklet og derfor 30 billigere at fremstille end de nævnte drivtromler, og dette formål opnås ved en anordning, som ifølge opfindelsen tillige udviser de træk, der er angivet i den kendetegnende del af krav 1. Til overføring af motorkraften er konstruktionen ifølge opfindelsen baseret på udnyttelsen af en trykkraft 35 til indstilling og opretholdelse af transportbåndets spænding. I sammenligning med den fra WO 93/18990 kendte kon- 2 DK 171638 B1 struktion udnyttes det organ, som ved den kendte teknik bestod af en sætskrue eller en låsetap, både til at forhindre drejning af den faststående aksel i forhold til stellet og til at muliggøre en indstilling af denne aksel på tværs af 5 drivtromlens omdrejningsakse.Accordingly, it is the object of the invention to provide the design of a drive drum of the above mentioned type which, in comparison with the by-pass roller bearing known from GB-A-934,735, is particularly stable for transferring the active actuated from a drive motor directly onto the conveyor belt. traction, and in comparison with the device known from WO 93/18990 is considerably simplified and therefore cheaper to manufacture than the said drums, and this object is achieved by a device which according to the invention also exhibits the features stated in the characterizing part of claim 1. For transferring the motor power, the construction according to the invention is based on the utilization of a compressive force 35 for adjusting and maintaining the tension of the conveyor belt. In comparison with the construction known from WO 93/18990, the means which in the prior art consisted of a set screw or a locking pin, is used both to prevent rotation of the fixed shaft in relation to the frame and to allow an adjustment of this shaft across the axis of rotation of the drum.

Hensigtsmæssige udførelsesformer for anordningen ifølge opfindelsen, hvis virkning vil fremgå af den efterfølgende specielle del af nærværende beskrivelse, er angivet i krav 2-4.Suitable embodiments of the device according to the invention, the effect of which will become apparent from the following specific part of the specification, are set out in claims 2-4.

10 Opfindelsen skal i det følgende forklares nærmere under henvisning til det på tegningen til dels skematisk viste udførelseseksempel på en anordning ifølge opfindelsen, idet fig. 1 er et længdesnit gennem den ene ende af en 15 drivtromle og den dermed samvirkende del af et transport stel, taget efter linien I-I i fig. 2, og fig. 2 viser de i fig. 1 viste dele set i retning af pilen II i fig. 1, og viser yderligere en nøgle, der er indsat med henblik på at foretage den ønskede indstilling.BRIEF DESCRIPTION OF THE DRAWINGS In the following, the invention will be explained in more detail with reference to the exemplary embodiment of a device according to the invention shown in the drawing. 1 is a longitudinal section through one end of a driving drum and the cooperating part of a transport frame, taken along line I-I in FIG. 2, and FIG. 2 shows those in FIG. 1 in the direction of arrow II in FIG. 1, showing a further key inserted for making the desired setting.

20 Den på tegningen viste anordning omfatter en driv tromle 1, som ved hjælp af lejer 2, hvoraf kun det ene er vist, er drejeligt lejret omkring en faststående aksel 3, idet tromlen 1 drives til rotation ved hjælp af symbolsk viste drivorganer i form af en motor 4, hvis stator 5 er 2 5 forbundet med akslen 3, medens dens rotor 6 er forbundet med indgangen 7 i et drev 8, fortrinsvis et planethjulsdrev, hvis udgang 9 er forbundet med tromlen 1.The device shown in the drawing comprises a drive drum 1, which by means of bearings 2, only one of which is shown, is pivotally mounted around a fixed shaft 3, the drum 1 being driven for rotation by means of symbolically shown driving means in the form of a motor 4 whose stator 5 is connected to the shaft 3, while its rotor 6 is connected to the input 7 of a drive 8, preferably a planetary drive whose output 9 is connected to the drum 1.

Drivtromlen 1 er på sædvanlig måde indrettet til at drive et transportbånd 10.The drive drum 1 is arranged in a conventional manner to drive a conveyor belt 10.

30 For at forhindre akslen 3 i at dreje i forhold til det stel 11, hvoraf kun en lille del er vist på tegningen, er der på den viste ende af akslen 3 påsat et drejningsanker 12, idet akslen 3 forhindres i at dreje i forhold til drejningsankeret 12 ved hjælp af en gennemgående skrue 13, der 35 strækker sig diametralt gennem både akslen 3 og drejnings-ankeret 12 og er indskruet i et gevind i akslen 3. Som vist DK 171638 B1 3 i fig. 2 er drejningsankeret 12 udformet med to over for hinanden beliggende affladninger 14, og er med disse glidende lejret i et tilsvarende spaltestyr 15 i den her viste del af stellet 11, således at drejningsankeret 12 kan forskydes 5 i spaltestyret 15, men ikke dreje i forhold til stellet 11.In order to prevent the shaft 3 from rotating with respect to the frame 11, of which only a small part is shown in the drawing, a pivot anchor 12 is mounted on the illustrated end of the shaft 3, preventing the shaft 3 from rotating in relation to pivot anchor 12 by means of a through screw 13 which extends diametrically through both shaft 3 and pivot anchor 12 and is screwed into a thread in shaft 3. As shown DK 171638 B1 3 in FIG. 2, the pivot anchor 12 is formed with two opposite discharges 14, and with these sliding is mounted in a corresponding slot guide 15 in the part of the frame 11 shown here, so that the pivot anchor 12 can be displaced 5 in the slot guide 15, but not rotate in proportion. to the frame 11.

For at gøre det muligt at indstille beliggenheden af drivtromlen 1 i forhold til stellet 11 er skruen 13 forlænget til anlæg mod en anlægsflade 16, der udgør bund i spaltestyret 15. Eftersom transportbåndet 10 altid står 10 under en vis spænding, vil det trække drivtromlen 1 og dermed akslen 3 og drejningsankeret 12 mod venstre som vist på tegningen, og det er derfor ikke nødvendigt at udstyre den viste del af stellet 11 med organer til at forhindre bevægelse i modsat retning. Som vist i fig. 2 kan indstillingen 15 ske ved hjælp af en sædvanlig sekskantnøgle 17, der er indført i en sekskantfatning 18 i skruen 13.In order to enable the position of the drive drum 1 to be adjusted with respect to the frame 11, the screw 13 is extended to abut against a contact surface 16 which forms the bottom of the slot guide 15. Since the conveyor belt 10 always stands 10 under a certain tension, it will pull the drive drum 1. and thus shaft 3 and pivot anchor 12 to the left as shown in the drawing, and it is therefore not necessary to equip the shown portion of frame 11 with means to prevent movement in the opposite direction. As shown in FIG. 2, the adjustment 15 can be made by means of a conventional hexagon wrench 17 inserted into a hexagon socket 18 in the screw 13.

For yderligere at forhindre "pilfingre" i at røre ved indstillingen af skruen 13 kan denne være udformet med en så lille længde, at den ikke på noget tidspunkt rager ud 20 med den på tegningen til højre beliggende ende.To further prevent "arrow fingers" from touching the adjustment of the screw 13, it may be of such a small length that it does not protrude 20 at any point with the end on the right.

For overskuelighedens skyld er organerne til smøring af lejerne 2 og organerne til forhindring af, at støv og lignende trænger ind i det indre af drivtromlen 1 ikke vist på tegningen. Sådanne organer kan imidlertid være udformet 25 på en eller flere måder, der er almindeligt kendt af fagfolk på dette område.For the sake of clarity, the means for lubricating the bearings 2 and the means for preventing dust and the like from entering the interior of the drive drum 1 are not shown in the drawing. However, such means may be formed in one or more ways commonly known to those skilled in the art.

I det viste eksempel er der kun gevind til indgreb med skruen 13 i akslen 3. Det ligger imidlertid inden for opfindelsens rammer at udforme gevind både i akslen 3 og i 30 den ene eller begge sider af drejningsankeret 12, eller alene i sidstnævnte, idet der kan opstå problemer, dersom der er gevind både i akslen 3 og i drejningsankeret 12, og disse dele fremstilles og gevindskæres hver for sig. Det er i øvrigt også muligt at dele skruen 13 på ikke vist måde, 35 så at den del, der ville ligge til venstre på tegningen, udgør det egentlige indstillelige anlægsorgan, medens den 4 DK 171638 B1 anden del anvendes til at låse den første del i den indstillede stilling, således som det i princippet er almindeligt kendt inden for andre områder af maskinteknikken.In the example shown, there are only threads for engagement with the screw 13 in the shaft 3. However, it is within the scope of the invention to design threads both in the shaft 3 and in one or both sides of the pivot anchor 12, or only in the latter, problems can occur if threads are present in both shaft 3 and in pivot anchor 12 and these parts are manufactured and threaded separately. It is also possible to divide the screw 13 in a manner not shown, so that the part which would be to the left of the drawing constitutes the actual adjustable abutment means, while the second part is used to lock the first part. in the set position, as is generally known in the art in other fields of mechanical engineering.

Motoren 4 skal selvsagt strømforsynes på en eller 5 anden måde, og dette vil normalt ske gennem en ledning, der er ført ud gennem den modsatte, ikke viste ende af akslen 3. Det vil kunne indses, at det kan være noget problematisk at udforme også den del af akslen 3, hvor ledningen til motoren 4 er ført igennem, på samme måde som den ende, der 10 er vist på tegningen. Det har i praksis imidlertid vist sig, at det er tilstrækkeligt med en indstillingsmulighed af den viste art ved den ene ende af akslen 3, idet denne mulighed anvendes til indstilling af sporingen af transportbåndet 10, medens spændingen i transportbåndet 10 indstilles 15 på kendt måde ved hjælp af de indstillelige lejer, hvori i det mindste én passiv, ikke vist tromle er lejret.The motor 4 must, of course, be powered in some way or another, and this will usually be done through a wire which is passed through the opposite, not shown end of shaft 3. It will be appreciated that it can be somewhat problematic to design also the portion of shaft 3 through which the lead to the motor 4 is passed through, in the same manner as the end shown in the drawing. In practice, however, it has been found that an adjustment option of the kind shown is sufficient at one end of the shaft 3, this option being used for adjusting the tracking of the conveyor belt 10, while the tension in the conveyor belt 10 is adjusted in a known manner at by means of the adjustable bearings in which at least one passive, not shown drum is mounted.

20 25 30 35 5 DK 171638 B120 25 30 35 5 DK 171638 B1

Genstandsforteanelse 1 Drivtromle 2 Leje 5 3 Aksel 4 Motor 5 Stator 3+5 = Tromlestator 6 Rotor 7 Indgang 10 8 Drev 9 Udgang 10 Transportbånd 11 Stel 12 Drejningsanker 15 13 Skrue 14 Affladning 15 Spaltestyr 16 Anlægsflade 17 Sekskantnøgle 20 18 SekskantfatningObject performance 1 Drive drum 2 Bearing 5 3 Shaft 4 Motor 5 Stator 3 + 5 = Drum stator 6 Rotor 7 Input 10 8 Drive 9 Output 10 Conveyor belt 11 Frame 12 Rotary anchors 15 13 Screw 14 Discharge 15 Slot guide 16 Touchpad 17 Hexagon key 20 18 Hexagon socket

Claims

6 DK 171638 B1

Apparatus for a motor-driven drum (1) having a drive motor (4) arranged therein for the operation of conveyor belts (10) and of the kind comprising 5 a) a non-rotating drum stator (3, 5), about which the drum ( 1) is pivotally mounted (2) and adapted to be driven by a motor (4-6) disposed within the drive drum (1), the stator (5) of which forms the drum stator (3, 5) and whose rotor (6) is drive connected (7-9) with the drive drum (1), b) at least one anti-rotation anchor (12) which is pivotally coupled to the drum stator (3, 5) by means of a radially directed pin or screw (13) and also extensibly coupled to a pivot preventing means (15) extendable for anchoring in the frame (11) in which the conveyor belt (10) is arranged in such a way that the means (15) cannot rotate about the axis of rotation of the drum (1), characterized in that the anti-rotation means (15) anchored in the frame (11) in addition to a displacement guide (14) for cooperating with said rotation anti-locking anchor (12), to allow the movement of the anchor (12) in directions across the axis of rotation of the drive drum (1), has a contact surface (16) located at the insertion end of the screw (13) at the transverse directions in the member (15). with the screw (13) being radially adjustable with respect to the drum stator (3,5) and formed with a length for abutment against this abutment surface (16).

Device according to claim 1, characterized in that the radially directed pin or screw (13) is rotatable in threaded engagement with either the drum stator (3, 5) or the anchor (12) disposed thereon.

Device according to claim 2, characterized in that the radially directed pin or screw (13) is in close engagement with the one of the two parts, namely the drum stator (3, 5) and the anchor (12) arranged on it. ) with which it is not threaded. 5 10 15 20 25 30 35