Hoisting winch assembly

Abstract

The present invention relates to a hoisting winch assembly comprising at least two preferably axially parallel drums spaced from each other axially, which can be driven in synchronism with each other by two motors via a transmission assembly. The invention furthermore relates to a crane, in particular a gantry and/or container crane, with such hoisting winch assembly. According to the invention, the transmission assembly has at least two separate gear trains, so that each motor is in drive connection with one drum each via a separate gear train. As compared to a common transmission to which both motors are connected, the separate gear trains can be configured significantly lighter and smaller, as no longer the power of both motors added up, but only the power of one motor must be transmitted. Nevertheless, high hoisting powers can be provided on the whole, as each motor must drive only one drum.

Claims

1. A hoisting winch assembly comprising: at least two drums configured to be jointly driven by at least two motors via at least one transmission assembly, each of the at least two drums having an interior, wherein the at least one transmission assembly comprises two separate gear trains, so that each of the at least two motors is in drive connection with one drum via at least one separate gear train, each of the at least one separate gear trains comprising a drum transmission and a connection transmission releasably mounted to each other and configured to allow for repositioning of each of the at least two motors, each drum transmission being at least partly in the interior of at least one of the at least two drums, wherein each drum transmission has a connection part protruding from at least one of the at least two drums, wherein each connection transmission is outside of the at least two drums, and wherein each connection transmission is connected to an input shaft of the corresponding drum transmission by the connection part.

2. The assembly of claim 1, wherein the at least two drums have longitudinal drum axes, wherein the at least two motors are arranged in a space between the at least two drums which is defined by planes which are arranged on the end faces of the at least two drums facing each other vertically to the longitudinal drum axes.

3. The assembly of claim 2, wherein the at least two motors have longitudinal motor axes, and wherein the longitudinal motor axes are arranged axially parallel to the longitudinal drum axes with an axial offset to said longitudinal drum axes in various angle sectors, wherein the various angle sectors comprise on opposite sides of a plane containing the longitudinal drum axes.

4. The assembly of claim 2, wherein the at least two motors have longitudinal motor axes, and wherein the longitudinal motor axes are arranged transversely to the longitudinal drum axes.

5. The assembly of claim 1, wherein the connection transmission is configured as a spur-gear transmission and the at least two motors are arranged in an axially parallel manner between the at least two drums.

6. The assembly of claim 1, wherein the connection transmission is configured as an angular transmission, and wherein the at least two motors have longitudinal motor axes, and wherein the at least two drums have longitudinal drum axes, and wherein the at least two motors have their longitudinal motor axes each arranged in a plane transverse to the longitudinal drum axis.

7. The assembly of claim 1, wherein at least one brake is each integrated in each of the gear trains between the at least two motors and the at least two drums.

8. The assembly of claim 7, wherein the at least one brake is arranged between the drum transmission and the at least two motors, and between the drum transmission and the connection transmission or between the connection transmission and the at least two motors.

9. The assembly of claim 7, wherein the brake is configured as a disk brake, multidisk brake or drum brake.

10. The assembly of claim 7, wherein the brake is configured as a disk brake, with a brake caliper being attached to a transmission housing portion.

11. The assembly of claim 1, wherein the at least two drums and the at least two motors are coupled with each other by a coupling device.

12. The assembly of claim 11, wherein the coupling device is configured as a synchronizing device to synchronize the at least two drums and/or the at least two motors with each other.

13. The assembly of claim 12, wherein the synchronizing device comprises an articulated shaft arranged between the at least two drums.

14. The assembly of claim 12, wherein the synchronizing device is electronic and comprises an electronic controller for actuating and electronically synchronizing the at least two motors.

15. The assembly of claim 1, wherein the assembly has a modular construction in which each of the at least two drums together with the associated motor and the interposed gear train forms a premounted, separate assembly unit configured to be mounted as a whole on a hoisting winch carrier.

16. The assembly of claim 1, wherein the at least two drums are arranged spaced from each other in an axially parallel manner.

17. A crane in the form of a container and/or gantry crane, comprising: the assembly of claim 1.

18. The assembly of claim 1, wherein each of the drum transmissions comprise being units, wherein the bearing units rotatably support an output bell with respect to a standing transmission housing.

19. A hoisting winch assembly comprising: at least two drums configured to be jointly driven by at least two motors via at least one transmission assembly, wherein each of the at least two drums has an interior, wherein the at least one transmission assembly comprises two separate gear trains, wherein each of the at least two motors is in drive connection with one drum via at least one separate gear train, wherein the at least one separate gear train each comprise a drum transmission and a connection transmission releasably mounted to each other and configured to allow for repositioning of the at least two motors, wherein each drum transmission is at least partly in the interior of one of the at least two drums and rotatably supporting one of the at least two drums, wherein each drum transmission has a connection part protruding from one of the at least two drums and an output bell non-rotatably connected to the drum and a standing transmission housing, wherein the standing transmission housing rotatably supports the output bell via an anti-friction bearing unit, wherein the standing transmission housing is attached to a support structure standing outside of the least two drums, and wherein each connection transmission is outside of the at least two drums, each connection transmission being connected to an input shaft of the drum transmission by the connection part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will subsequently be explained in detail with reference to preferred exemplary embodiments and associated drawings. In the drawings:

(2) FIG. 1: shows a longitudinal section through a hoisting winch assembly according to an advantageous embodiment of the invention, according to which the two motors are arranged in an axially parallel manner and are connected to only one drum each via separate spur-gear transmissions,

(3) FIG. 2: shows a partial sectional view of a motor-transmission-drum unit similar to FIG. 1, wherein in contrast to the embodiment of FIG. 1 a brake is arranged on the opposite side of the motor which in turn is arranged on the spur-gear transmission in an axially parallel manner,

(4) FIG. 3: shows a longitudinal section through a hoisting gear assembly according to another advantageous embodiment of the invention, according to which the motors with their longitudinal motor axes are arranged transversely to the longitudinal drum axes and are connected to one drum each via angular transmissions, and

(5) FIG. 4: shows a perspective representation of the hoisting winch assembly of FIG. 3.

DETAILED DESCRIPTION

(6) As shown in the Figures, the hoisting winch assembly 1 comprises two axially parallel drums 2 spaced from each other, which as regards their basic structure can be configured in a manner customary per se, in particular can comprise a grooved drum body with flanged wheels. On end-face edge portions the drums 2 also can comprise non-grooved cylinder portions which form a reserve, if a longer cable is to be drawn up. In a manner known per se, two cables can run off from each drum 2, as can be the case for example in gantry or container cranes, in order to be able to stably lift and lower the hoisting harness for picking up containers.

(7) As shown in the Figures, the drums 2 in particular can be arranged coaxially to each other.

(8) Each of the drums 2 here is driven by a motor 3 which is in drive connection with only one drum each by a separate gear train 4 or 5 of a transmission assembly 6.

(9) As shown in FIGS. 1 and 3, each of said gear trains 4 and 5 can comprise a drum transmission 7 which at least for the preferably larger part, in particular also substantially can completely be accommodated in the interior of the drum 2, so that on the end face only one connecting part or portion of the drum transmission 7 protrudes from the drum 2 and is accessible.

(10) Into said drum transmissions 7 bearing units 8 e.g. in the form of one or more anti-friction bearings can be integrated in order to support the drum 2 at the drive-side end via the drum transmission 7. In particular an output bell 9 of the drum transmission 7, which can rigidly or non-rotatably be connected with, e.g. screwed to the drum 2, can rotatably be supported with respect to the standing transmission housing 10 via the bearing unit 8, which transmission housing in turn can be attached to the non-illustrated supporting structure which for example can be part of a crane.

(11) As shown in FIG. 1, the motors 3 each can be connected to one of the drum transmissions 7 by means of a connection transmission 11, wherein said connection transmission 11, as shown in FIG. 1, can be configured as a spur-gear transmission which on the output side is connected with the input shaft of the drum transmission 7 and on the input side with the motor 3.

(12) The motor 3 can be arranged axially parallel, but axially offset to the longitudinal drum axis of the associated drum 2, cf. FIG. 1.

(13) As shown in FIG. 1, the two motors 3 thereby can both be arranged between the drums 2, namely in particular in a space 12 which is defined by two imaginary planes 13 which are arranged at the drive-side end faces of the drums 2 vertically to the longitudinal drum axis, cf. FIG. 1. Advantageously, the two motors 3 here can overlap, so that the motors 3 at least partly overlap in a viewing direction vertically to the longitudinal drum axis (which viewing direction in FIG. 1 lies in the drawing plane).

(14) In particular, the motors 3 can be arranged on opposite sides of an imaginary plane which contains the longitudinal drum axis 14. The motors 3 at least are arranged in various sectors, i.e. angular ranges proceeding from the drum axis 14, so that despite said overlap the motors 3 do not collide with each other.

(15) As shown in FIG. 1, a brake 15 advantageously can be integrated into each gear train 4 or 5, wherein said brake 15 for example can be integrated into the spur gear or connection transmission 11 and/or be arranged on the transmission axis coupled with the motor shaft and/or be coupled directly with the motor shaft. Said brake 15 in particular can be configured as a disk brake or multidisk brake, wherein a brake disk 16 can be seated on the transmission shaft coupled with the motor shaft. A brake stator for example in the form of a brake caliper 17 advantageously can be attached to the transmission housing of the connection transmission 11.

(16) As shown in FIG. 2, said brake 15 however can also be connected or coupled with a transmission shaft 18 which is not directly connected with the motor shaft of the motor 3. For example, the brake 15 can be arranged on a side of the connection transmission 11 opposite the motor 3, whereby more space is available for the installation of the brake 15. Advantageously, the brake stator or the brake caliper 17 here can also be attached to the housing of the connection transmission 11, cf. FIG. 2.

(17) As shown in the Figures, a synchronous run of the two drums 2 can be achieved by a synchronizing shaft despite the separate gear trains 4 and 5, which synchronizing shaft advantageously can be configured as an articulated shaft 19, in particular as a cardan shaft. Said synchronizing shaft advantageously can be arranged axially parallel or coaxially to the longitudinal drum axis 14 and be connected to the two drum transmissions 7 or to the two connection transmissions 11. The gear trains 4 and 5 therefor can each have an axle connection 20 which can be connected with the articulated shaft 19 and can protrude coaxially to the longitudinal drum axis 14 from the drive-side end face of the drums or the transmission assemblies provided there.

(18) As shown in FIG. 3, the motors 3 with their longitudinal motor axes also can be arranged in planes transverse to the longitudinal drum axis 14. The connection transmissions 11 here can be configured in the form of angular transmissions. The motors 3 can point to different sides, in particular however can also be aligned parallel to each other, as is shown in FIG. 4.