DE4312196A1 - Slewing crane - Google Patents

Slewing crane

Info

Publication number
DE4312196A1
DE4312196A1 DE19934312196 DE4312196A DE4312196A1 DE 4312196 A1 DE4312196 A1 DE 4312196A1 DE 19934312196 DE19934312196 DE 19934312196 DE 4312196 A DE4312196 A DE 4312196A DE 4312196 A1 DE4312196 A1 DE 4312196A1
Authority
DE
Germany
Prior art keywords
disc
column
swivel arm
slewing
crane
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.)
Withdrawn
Application number
DE19934312196
Other languages
German (de)
Inventor
Joachim Dipl Ing Buhl
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.)
VETTER FOERDERTECHNIK GmbH
Original Assignee
VETTER FOERDERTECHNIK 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 VETTER FOERDERTECHNIK GmbH filed Critical VETTER FOERDERTECHNIK GmbH
Priority to DE19934312196 priority Critical patent/DE4312196A1/en
Publication of DE4312196A1 publication Critical patent/DE4312196A1/en
Withdrawn legal-status Critical Current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
    • 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
    • B66C23/02Cranes 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 with non-adjustable and non-inclinable jibs mounted solely for slewing movements
    • B66C23/022Pivot axis common with column

Abstract

The invention relates to a slewing crane, in particular a column slewing crane, the supporting elements of the slewing crane consisting of a vertical, stationary column (1) and a slewing arm (2) arranged in a horizontally slewable manner on the top free end of the column (1). A lifting mechanism (3) is mounted in a longitudinally displaceable manner on the freely projecting area of the slewing arm (2). The aim of the invention was to design a slewing crane in such a way that the slewing arm (2) of the slewing crane is mounted on the column (1) of the slewing crane in such a way as to be horizontally slewable through 360 DEG , that the lifting mechanism (3) of the slewing arm (2) can be traversed close up to the column (1), and that the proportion of components to be mechanically treated for the mounting of the slewing arm (2) on the column (1) is reduced to a minimum. According to the invention, this object is achieved in that a disc (4) forming the top termination of the column (1) and having a larger diameter than the column (1) is provided for the pivot mounting on the column (1), and at least one bearing (5) resting against the disc (4) from below is provided on the end of the slewing arm (2) carried on the column (1), and furthermore at least one supporting bearing (6) supported on the disc (4) from above is provided on the slewing arm (2). <IMAGE>

Description

The invention relates to a jib crane, in particular Sau jib crane, the supporting elements of the jib crane a vertical, stationary column and one on its top free end horizontally pivoted swivel arm exist, the swivel arm here with its one longitudinal end can be swiveled horizontally via a pivot bearing on the column stored and on the cantilevered area of the swivel arm a hoist is mounted for longitudinal displacement.

Pillar jib cranes with stationary pillar and horizontal pivotably arranged swivel arm usually carry on the swivel arm a fixed pressure strut, the verti facing downward, over there at its free end arranged pressure rollers against one firmly on the round column arranged pressure ring supports and thus the storage of Swivel arms on the upper end of the column relieved. The The slewing arms of these slewing cranes are preferably 360 ° swiveling. However, the disadvantage of this embodiment is that Arrangement of the strut, which is a method of lifting the swivel arm is prevented up to close to the column. The um the column remaining, not movable by the hoist rich, can therefore not be operated by the slewing crane.

Slewing cranes of the type mentioned at the outset are also known, where the swivel arm by means of a kingpin in one Bearing is mounted centrally in a head plate of the column. This kingpin takes over from the load over the Torque acting moments as bending forces. The execution tion and storage of the kingpin must be uneconomical dimensioned large. Another disadvantage of this Execution is that this type of jib crane only for relatively small loads are suitable.  

A pillar jib crane is also known in which the Swivel arm is mounted on the column via a large roller bearing. This slewing bearing corresponds approximately in its dimensions the diameter of the column. Even with this version the hoist can be moved close to the column, however, the required slewing bearings are so expensive that this version is only used for special cases.

The object of the present invention was a To design slewing crane, in particular column slewing crane, that the swivel arm of the column slewing crane is horizontally 360 ° is pivotally mounted on the column of the jib crane that the storage of the swivel arm with simple means done in an economical manner that the assembly of the Swivel arm on the column can be done easily, that the lifting arm of the swivel arm up to the column is movable that for motorized pivoting of the Swivel arm simple components can be used and that the proportion of components to be machined for the storage of the swivel arm on the column Minimum is reduced.

According to the invention, this object is achieved in that for the pivot bearing on the column the top end the column-forming disc with a larger diameter than that Column and at the end of the swivel arm supported on the column with at least one from below against the pane Bearing and on the swivel arm further at least one from above support bearing is provided on the disc. Here, the bearing is at least one against the bottom Disc attached rotatable roller formed around a ho horizontal, against the center of rotation of the swivel arm aligned axis is arranged. The invention is based on advantageously found a jib crane in which the La the swivel arm on the column in a simple way takes place that the lifting mechanism on the swivel arm until tight against the column can be moved.  

Simple components are advantageously used, the one easy assembly of the modules and the swivel arm the column. According to an embodiment of the Invention consists of the support bearing on the swivel arm from minde at least two rotatable ones lying on the disc from above Rollers, each one horizontal against the center of rotation of the swivel arm directed at a distance from each other are ordered. This design of the support bearing is guarantee a slight pivoting of the swivel arm stet and other components are used that are customary in the trade and the economy of the Ensure slewing cranes. According to another embodiment Example of the invention show the roles against the man the flanges on the disc. Through this Training the roles will be an accurate guide of the Schwenkar mes guaranteed in its storage on the column.

According to a further embodiment, on the swivel arm game of the invention protruding in front of the outer surface of the disc Slideways in an arc of a circle, at least partially, the man telfläche be arranged extensively. The sliding leadership according to the invention replace the flanges according to embodiment described above. When used Commercial rollers with ebe ner outer surface can be used.

According to a further embodiment of the invention the disc is centered on a support bearing of the swivel arm engages. In this execution case game of the invention is as a support bearing on the swivel arm and a ball or roller bearing as centering on the disc arranged. For this described embodiment of the Invention can also be used for standard bearings the that the economy of the invention Ensure slewing cranes.  

On the swivel arm there are lifting areas protruding under the pane stanchions arranged. These lifting safeguards ensure safe and hazard-free storage of the swivel arm the pillar.

According to one embodiment of the invention, at least one Provide the roller with a drive. Through this fiction Any motorized or manually operated version can be used as a standard Drive for pivoting the swivel arm can be used.

According to a further embodiment of the invention a drive acting directly on the disc, with verti direct drive fixed to the swivel arm arranged. In this embodiment of the invention the disc is designed as a ring gear, in which the Swivel arm-mounted drive engages in a rotationally locking manner.

According to a further embodiment of the invention provide the wheel flanges of the rollers with a toothing where with the drive, rotationally locked with the toothing of the track wreaths is connected.

Details of the invention are given by way of example play explained in the drawing.

It shows

Fig. 1 is a side view of a portion of a pivot crane according to the invention,

Fig. 2 is a plan view of the jib crane of FIG. 1,

Fig. 3 is a partial side view of a Schwenkkra nes according to a second embodiment of the invention,

Fig. 4 is a plan view of the jib crane of Fig. 3,

Fig. 5 is a partial side view of a Schwenkkra nes according to a third embodiment of the invention,

Fig. 6 is a plan view of the jib crane of FIG. 5,

Fig. 7 shows the part of a side view of a Schwenkkra nes according to a fourth embodiment of the invention,

Fig. 8 is a plan view of the slewing crane to Fig. 7,

Fig. 9 is a partial side view of a Schwenkkra nes according to a fifth Ausführungsbei game of the invention,

Fig. 10 is a plan view of the slewing crane to Fig. 9.

The slewing crane shown in the drawings consists in all embodiments essentially of the statio nary column ( 1 ), the horizontally pivotably mounted pivot arm ( 2 ) on the upper free end of the column ( 1 ) and the longitudinally displaceably mounted on the pivot arm ( 2 ) stroke plant ( 3 ). In all exemplary embodiments shown in the drawing, a disc ( 4 ) is fastened horizontally on the upper free end of the column ( 1 ). The disc ( 4 ) has a larger diameter than the column ( 1 ) consisting of a tube. It is also conceivable to design the disc ( 4 ) with a central bore, for example in the form of a flange. In the embodiment of the invention shown in FIGS. 1 and 2, two from the bottom against the disc bearing ( 5 ) are arranged on the swivel arm ( 2 ). These bearings ( 5 ) consist in the illustrated embodiment, for example, of rotatable rollers ( 7 ), each of which is arranged around a hori zontale, against the center of rotation of the swivel arm ( 2 ) directed axis at a distance from one another on the swivel arm ( 2 ). On the swivel arm ( 2 ) further support bearings ( 6 ) are arranged from above on the disc ( 4 ).

The support bearing ( 6 ) consist in the illustrated embodiment, for example, of rotatable rollers, which are arranged at a distance from each other around a horizontal axis directed against the center of rotation of the swivel arm. The bearings ( 5 ) (rollers 7 ) are expediently arranged on the column-side end of the swivel arm ( 2 ) and the support bearings ( 6 ) (rollers 8 ) on the opposite side of the column ( 1 ) on the swivel arm ( 2 ). To reduce bending moments acting on the disc ( 4 ), the support bearings ( 6 ) can be arranged directly above the wall of the column ( 1 ) on the disc ( 4 ). In the illustrated embodiment, slideways ( 9 ) and lift-off conditions ( 12 ) are also provided on the swivel arm. The arrangement and number of these anti-lifting devices ( 12 ) and sliding guides ( 9 ) are appropriately carried out in accordance with the operating conditions and safety regulations. As an alternative to the sliding guides ( 9 ), a centering ( 10 ) can be arranged centrally on the disc ( 4 ) of the column ( 1 ), which cooperates with a corresponding counter bearing of the pivot arm ( 2 ) to form the guide of the pivot arm.

3 and 4 game of the invention shown in FIGS. The rollers ( 7 ) of the bearing ( 5 ) and the rollers ( 8 ) of the support bearing ( 6 ) are provided with flanges ( 7 a and 8 a). These flanges ( 7 a and 8 a) form the centering of the bearing of the swivel arm ( 2 ) on the disc ( 4 ) of the column ( 1 ).

Wherein in FIGS. 5 and 6, the invention Ausführungsbei game is the bearing (5) again ge of rollers Mäss embodiments described above is formed. The support bearing ( 6 ) consists of a cylinder or roller bearing ( 11 ), which on the one hand on the swivel arm ( 2 ) and on the other hand on the centering ( 10 ) of the disc ( 4 ) be fastened.

In the embodiment shown in FIGS. 7 and 8, a roller ( 7 ) of the bearing ( 5 ) is provided with a motor drive ( 13 ).

In the embodiment of the invention shown in FIGS. 9 and 10, a motor drive ( 14 ) with a vertical axis is arranged on the swivel arm ( 2 ). This motor-specific drive ( 14 ) engages directly and rotationally in the disc ( 4 ) of the column ( 1 ) which is designed as a pinion.

Claims (12)

1. slewing crane, in particular pillar slewing crane, the supporting elements of the slewing crane consist of a vertical, stationary column ( 1 ) and a slewing arm ( 2 ) horizontally pivotably arranged at the upper free end thereof, the slewing arm ( 2 ) with its one longitudinal end via a rotary bearing on the column ( 1 ) hori zontally pivoted and on the cantilevered area of the swivel arm ( 2 ) a lifting mechanism ( 3 ) is slidably mounted in the longitudinal direction, characterized in that for the pivot bearing on the column ( 1 ) an upper from the conclusion the column ( 1 ) forming disc ( 4 ) with a larger diameter than the column ( 1 ) and at the end of the swivel arm ( 2 ) bearing on the column ( 1 ) at least one bearing from below against the disc ( 4 ) bearing ( 5 ) and on the swivel arm ( 2 ) further at least one from above on the disc ( 4 ) supporting Stützla ger ( 6 ) is provided.
2. Jib crane according to claim 1, characterized in that the bearing ( 5 ) from at least one from below against the disc ( 4 ) adjacent rotatable roller ( 7 ) is formed, which is directed around a horizontal, against the center of rotation of the swivel arm ( 2 ) Axis is arranged.
3. slewing crane according to claims 1 and 2, characterized in that the support bearing ( 6 ) on the swivel arm ( 2 ) consists of at least two from above on the disc ( 4 ) lying on lying rotatable rollers ( 8 ), each one ho rizontale, against the center of rotation of the Schwenkar mes ( 2 ) directed axis at a distance from each other are angeord net.
4. jib crane according to claims 1 to 3, characterized in that the rollers ( 7 and 8 ) against the Mantelflä surface of the disc ( 4 ) have adjacent flanges ( 7 a and 8 a).
5. slewing crane according to claims 1 to 3, characterized in that on the swivel arm ( 2 ) in front of the outer surface of the disc ( 4 ) projecting slide guides ( 9 ) are circular, at least partially the outer surface of the disc ( 4 ) comprising are arranged.
6. jib crane according to claims 1 and 2, characterized in that the disc ( 4 ) centrally has a centering tion ( 10 ) into which a support bearing ( 6 ) of the swivel arm engages.
7. slewing crane according to claims 1, 2 and 6, characterized in that a ball or roller bearing ( 11 ) is arranged as a support bearing ( 6 ) on the swivel arm ( 2 ) and as a centering ( 10 ) on the disc ( 4 ) .
8. jib crane according to claims 1 to 7, characterized in that on the swivel arm ( 2 ) under the disc ( 4 ) projecting lifting safeguards ( 12 ) are arranged.
9. jib crane according to claims 1 to 8, characterized in that at least one roller ( 7 or 8 ) is provided with a drive ( 13 ).
10. Slewing crane according to claims 1 to 8, characterized in that a drive ( 14 ) as a directly on the disc ( 4 ) acting, arranged with a vertical axis direct drive is fixed to the swivel arm ( 2 ).
11. Slewing crane according to claims 1 to 8 and 10, characterized in that the disc ( 4 ) is formed as a sprocket, in which the on the swivel arm ( 2 ) mounted to drive ( 14 ) engages in a rotational manner.
12. Slewing crane according to claims 1 to 9, characterized in that the wheel flanges ( 7 a or 8 a) of the rollers ( 7 or 8 ) are provided with a toothing, the drive ( 13 ) being rotationally locked to the toothing of the wheel flanges ( 7 a or 8 a) is connected.
DE19934312196 1993-04-14 1993-04-14 Slewing crane Withdrawn DE4312196A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934312196 DE4312196A1 (en) 1993-04-14 1993-04-14 Slewing crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934312196 DE4312196A1 (en) 1993-04-14 1993-04-14 Slewing crane

Publications (1)

Publication Number Publication Date
DE4312196A1 true DE4312196A1 (en) 1994-10-20

Family

ID=6485463

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19934312196 Withdrawn DE4312196A1 (en) 1993-04-14 1993-04-14 Slewing crane

Country Status (1)

Country Link
DE (1) DE4312196A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105417380A (en) * 2015-11-27 2016-03-23 河南新科起重机股份有限公司 Novel intelligent stand column swing arm crane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105417380A (en) * 2015-11-27 2016-03-23 河南新科起重机股份有限公司 Novel intelligent stand column swing arm crane

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Date Code Title Description
8139 Disposal/non-payment of the annual fee