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DE516794C - Slewing gear with ball ring for cranes - Google Patents

Slewing gear with ball ring for cranes

Info

Publication number
DE516794C
DE516794C DE1930516794D DE516794DD DE516794C DE 516794 C DE516794 C DE 516794C DE 1930516794 D DE1930516794 D DE 1930516794D DE 516794D D DE516794D D DE 516794DD DE 516794 C DE516794 C DE 516794C
Authority
DE
Germany
Prior art keywords
slewing gear
ball
pieces
crane
cranes
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
Application number
DE1930516794D
Other languages
German (de)
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.)
Mannesmann Demag AG
Original Assignee
Demag AG
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 Demag AG filed Critical Demag AG
Application granted granted Critical
Publication of DE516794C publication Critical patent/DE516794C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/84Slewing gear
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/10Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • F16C33/60Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/02Arrangements for equalising the load on a plurality of bearings or their elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00Application independent of particular apparatuses
    • F16C2300/10Application independent of particular apparatuses related to size
    • F16C2300/14Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00Articles relating to transporting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Description

Um einen möglichst geringen Kraftverbrauch für das Drehwerk von Drehkranen zu erreichen, sind diese Drehkrane schon häufiger mit Kugelkränzen für die Auflagerung des drehbaren Teiles versehen worden. Da aber die Belastungen, welche die einzelnen Kugeln bekommen, bei vollständig geschlossenen oberen und unteren Kugellagerringen nicht genau bestimmbar sind, so hat man fürIn order to achieve the lowest possible power consumption for the slewing gear of slewing cranes reach, these slewing cranes are more often with ball bearings for support of the rotatable part. But since the burdens that the individual Get balls with the upper and lower bearing rings completely closed are not exactly determinable, one has for

ίο Krane von größerer Tragfähigkeit bisher derartige Kugellager vermieden und statt dessen unter den vier Ecken des Krangerüstes in Balanciers gelagerte Laufrollen vorgesehen. Durch diese Laufrollen baut sich aber das ganze Krangerüst verhältnismäßig hoch, außerdem erfordert ein derartiger Kran auch verhältnismäßig große Kräfte für das Drehwerk. ίο cranes of higher load capacity so far such Ball bearings avoided and instead provided rollers mounted in balancers under the four corners of the crane frame. Due to these rollers, however, the entire crane frame builds up relatively high, In addition, such a crane also requires relatively large forces for the slewing gear.

Um nun eine genaue Bestimmung der Be-In order to get an exact determination of the

ao lastungen der einzelnen Kugeln für derartige Drehwerke zu erreichen, soll gemäß vorliegendem Vorschlag unter den Kranecken ein größerer Balancier vorgesehen werden, an welchem wieder kleinere Balanciers gelagert sind, welche die bogenförmigen Laufringstücke für die Kugeln tragen. Die Ausbildung dieser kleinen Bogenstücke soll so geschehen, daß stets nur zwei Kugeln zum Tragen kommen. Ihre Länge ist deshalb derart bemessen, daß die dritte Kugel bereits aufliegt, bevor die erste Kugel das Bogenstück verlassen hat. Um nun zu verhüten, daß die mittlere Kugel den Druck allein überträgt, wird in der Laufbahn des Bogenstückes eine Aussparung vorgesehen, welche verhindert, daß die mittlere Kugel trägt, wenn die beiden anderen Kugeln aufliegen. Erst wenn die vordere Kugel die Laufbahn verlassen hat, kommt die mittlere Kugel zum Aufliegen. Bei dieser Anordnung ist eine einwandfreie Beanspruchung der Kugeln erreicht.ao to achieve loads of the individual balls for such slewing gear is to be according to the present Proposal to provide a larger balancer under the crane corners, on which smaller balancers are again stored which carry the arcuate raceway pieces for the balls. Training these small pieces of arch should be done so that only two balls to carry come. Their length is therefore such that the third ball is already on top, before the first ball has left the arc. In order to prevent the middle ball transmits the pressure alone, becomes a Recess is provided which prevents the middle ball from bearing when the two rest on other balls. Only when the ball in front has left the track, the middle ball comes to rest. With this arrangement there is a perfect load of the balls reached.

Ein weiterer Vorteil ergibt sich noch dadurch, daß man infolge der kurzen Ausbildung der Bogenstücke leicht an die Kugeln gelangen kann, während es bei durchlaufenden Kugellaufringen unmöglich ist, an die Kugeln zu kommen. In diesem FaE muß stets erst das ganze Kranoberteil abgehoben werden.Another advantage arises from the fact that, as a result of the short training the bow pieces can easily get to the balls while it is passing through Ball races is impossible to get to the balls. In this FaE must the entire upper part of the crane must always be lifted off first.

In der Zeichnung stelltIn the drawing represents

Abb. ι eine Übersichtsskizze dar,
Abb. 2 zeigt die Ansicht eines Teiles des Kugelkranes,
Fig. Ι represents an overview sketch,
Fig. 2 shows a view of part of the ball crane,

Abb. 3 eine Draufsicht in verkleinertem Maßstab undFig. 3 is a plan view on a reduced scale and

Abb. 4 einen Querschnitt zu Abb. 1.
Der Druck des Krangerüstes 1 wird an den Endpunkten 2 auf Balanciers 3 über die Bolzen 3« übertragen. Diese stützen sich auf Zwischenbalanciers 4 ab, welche ihrerseits auf balancierartigen Bogenstücken 5 ruhen. Diese Bogenstücke bilden Teile des oberen Laufringes eines Kugelkranzes mit den Kugeln 6, dem Käfig 7 und dem unteren Laufring 8. Zwischen den Bogenstücken wird der Kugelkranz durch Zwischenstücke^ überdeckt.
Fig. 4 is a cross-section to Fig. 1.
The pressure of the crane frame 1 is transmitted at the end points 2 to the balancers 3 via the bolts 3 ″. These are supported on intermediate balancers 4, which in turn rest on balancing-like curved pieces 5. These arched pieces form parts of the upper race of a ball ring with the balls 6, the cage 7 and the lower race 8. Between the curved pieces, the ball ring is covered by spacers ^.

Unter jeder Ecke des Krangerüstes sind vier Bogenstücke zu je zwei Kugeln vorge-Under each corner of the crane frame there are four curved pieces with two balls each.

sehen, so daß für die Aufnahme des Eckdrukkes acht Kugeln zur Verfügung stehen. Diese Kugeln werden vollständig gleichmäßig belastet. see, so that eight balls are available for receiving the corner pressure. These Balls are loaded completely evenly.

Um nun bei Schiefstellung des Kranes zu verhüten, daß Seitenkräfte von den Kugeln aufgenommen werden müssen, sind noch vier Zentrierungsrollen io angebracht, welche mittels eines Zapfens 11 an dem Gerüst! ge- lagert sind. Diese Rollen sind an vier Stellen vorgesehen, so daß eine gleichmäßige Zentrierung des oberen drehbaren Teiles erreicht wird. Die Rollen legen sich gegen die am Unterteil 12 ,angebrachten Laufschienen 13.In order to prevent lateral forces from the balls when the crane is tilted must be included, four centering rollers are still attached, which by means of a pin 11 on the frame! ge are stored. These rollers are provided in four places so that they are evenly centered of the upper rotatable part is reached. The rollers lie against the am Lower part 12, attached running rails 13.

Der Antrieb selbst erfolgt durch einen Triebstock 14, welcher mit dem Unterbau fest verbunden ist.:The drive itself is carried out by a headstock 14, which is firmly connected to the substructure is.:

Der Vorteil der Erfindung besteht darin, daß die Kugeln genau berechenbare DrückeThe advantage of the invention is that the balls can be precisely calculated pressures

ao erhalten und außerdem durch die Druckrollen besondere Führungen durch einen zentralen Königstock vermieden werden. Die Laufrollen lassen sich sehr leicht ausbauen, viel leichter als ein Königstock.ao received and also through the pressure rollers special guides through a central Königstock should be avoided. The rollers can be removed very easily, much lighter than a king's stick.

Claims (5)

Patentansprüche:Patent claims: ι . Drehwerk mit Kugelkranz für Krane, Drehscheiben oder ähnliche Hebe- oder Fördereinrichtungen, dadurch gekennzeichnet, daß der obere Kugellagerring aus einzelnen Bogenstücken besteht, auf die sich das Krangerüst über Balanciers abstützt.ι. Slewing gear with ball ring for cranes, turntables or similar lifting or Conveyors, characterized in that the upper ball bearing ring consists of individual arched pieces on which the crane frame is supported by balancers supports. 2. Drehwerk nach Anspruch 1, dadurch gekennzeichnet, daß lediglich die unter den Eckpunkten des Krangerüstes befindlichen Teile des oberen KügeUagerringes als b.alancierartige Bogenstücke ausgebildet, die dazwischenliegenden Teile jedoch entlastet sind.2. slewing gear according to claim 1, characterized in that only the below The parts of the upper KügeUagerring located at the corner points of the crane frame designed as b.alancier-like curved pieces, but the parts in between are relieved. 3. Drehwerk nach Anspruch 1, dadurch gekennzeichnet, daß jedes Bogenstück gleich der Entfernung etwa dreier Mntereinanderf olgenden Kugeln ist und Vorrichtungen besitzt, die jeweils mittelste Kugel zu entlasten, so daß immer nur zwei Kugeln tragen.3. Rotary mechanism according to claim 1, characterized in that each bend equals the distance of about three consecutive balls and devices has to relieve the middle ball, so that only carry two bullets. 4. Drehwerk nach Anspruch 3, dadurch gekennzeichnet, daß die Laufbahn der Bogenstücke im mittleren Teil eine Erweiterung, Aussparung o. dgl. 'besitzt.4. slewing gear according to claim 3, characterized in that the track of the Arch pieces in the middle part an extension, recess o. The like. 'Has. 5. Drehwerk nach Anspruch 1, gekennzeichnet durch waagerechte Zentrierungsrollen, welche seitliche Drücke, z. B. bei Schiefstellen des Kranes, auf das feststehende Gerüst übertragen und so von den Kugeln fernhalten.5. slewing gear according to claim 1, characterized by horizontal centering rollers, which lateral pressures, z. B. at Inclination of the crane, transferred to the fixed scaffolding and so from keep away from the bullets. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DE1930516794D 1930-04-12 1930-04-12 Slewing gear with ball ring for cranes Expired DE516794C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE516794T 1930-04-12

Publications (1)

Publication Number Publication Date
DE516794C true DE516794C (en) 1931-01-28

Family

ID=6549346

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930516794D Expired DE516794C (en) 1930-04-12 1930-04-12 Slewing gear with ball ring for cranes

Country Status (1)

Country Link
DE (1) DE516794C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036487B (en) * 1953-06-27 1958-08-14 Lauchhammer Maschb Und Stahlba With a ball or roller ring provided roller bearing for cranes, excavators, swivel bridges or the like.
FR2323623A1 (en) * 1975-09-15 1977-04-08 Tax Hans ROTATING CRANE FOR HEAVY LOADS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036487B (en) * 1953-06-27 1958-08-14 Lauchhammer Maschb Und Stahlba With a ball or roller ring provided roller bearing for cranes, excavators, swivel bridges or the like.
FR2323623A1 (en) * 1975-09-15 1977-04-08 Tax Hans ROTATING CRANE FOR HEAVY LOADS

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