DE2237343C3 - Winch with two drums - Google Patents

Description

40

The invention relates to a winch with two Drums connected to a common shaft driven by a motor via a planetary gear in Are connected, with the force fluli in the planetary gear from the sun gear connected to the shaft runs over the planet gear to the planetary ring and wherein the planetary ring is assigned to the first drum and the planetary gear carrier is the /'.wide drum drives.

In the known winch of the type mentioned above (German patent specification 9 31 853), the two drums are loosely mounted on a common driven shaft. If the shaft is driven, both drums rotate in opposite directions, depending on BeIa-ItIiM ₄ ; at different speeds. There is no possibility of optionally driving the drums with the »interposition of a reduction gear.

In a winch with two drums, which has also become known (British patent specification 12 18 104), one drum is firmly connected to the common shaft, while the other drum is loosely rotatably mounted on the shaft. This second drum can, however, be connected to the common shaft via a claw coupling. This embodiment is a 5 ^ft connected disadvantage that, although the drum 1 can turn by itself with the common shaft, located on the other hand, even after the coupling of the second Trom

mel with the shaft rotates together with this.

The invention is based on the object of a winch with two cable drums of the type mentioned at the beginning of simple structural design / u create. whereby, under the interposition of an interim transmission optionally only one of the drums is in operation, so that two different ones with this winch Operations can be carried out.

The invention solves this problem in that _uu f the axis of the planetary gear carrier a further sun gear is rotatably arranged, which is in engagement with another planet gear on a further planetary gear carrier, the axis of the carrier is rotatably coupled to the second drum that the other Planet gear is engaged with a further planetary ring m which is connected to the planetary ring associated with the first drum in a rotationally fixed manner via a housing, and that each drum can be locked separately to the stationary winch housing.

This specific embodiment of the winch with a two-stage planetary gear is unier use simple structural means results with only one drive shaft, the possibility of simultaneously using a reduction gear according to practical requirements optionally either di _e to drive one or the other drum by a a / strength motor. All that is required for this in the simplest way is to lock the drum, which is not supposed to be set in motion. In this advantageous way there is the possibility of using the winch, for example in a crane, both for the load rope with regard to the load stroke and for the assembly rope with regard to erecting the crane.

In a particularly simple embodiment, the drums can be locked by means of two axially movable ones Pins are made, which are each arranged on the opposite end faces of the winch. It can but also for locking the first drum, the stop of a fixable in its highest position Load hook of the load rope running up on the first drum may be provided.

In the drawing is an embodiment of the Training shown according to the invention. It shows

F i g. 1 shows an axial section through the inventive Winch, a first possible application position is drawn, and

Fig. 2 is a partial view in which the latching into the other position is shown in detail.

The winch shown in the drawings consists of the following parts:

a) a planetary gear 1 with two reduction stages, the housing 2, which is equipped with a load drum 3 is connected, the two planetary rings 20 and 21 contains,

b) a drum 4 for erecting or mounting, which is driven by a shaft 5: the shaft 5 is on the one hand with a planet carrier 17 of the second stage of the planetary gear and on the other hand connected to the drum 4 for erecting the crane or its parts,

c) a brake motor (electric or hydraulic) of a drive 6, the shaft of which with the sun gear 18 of the first stage of the planetary gear is connected,

d) three support struts 7, 8, 9, which are connected to one another by three or four connecting rods 10 are. The struts 7 and 8 carry the load drum 3 via bearings 11 and 12, and the struts 8 and 9 carry

the drum 4 via bearings 13 and 14.
The strut 7 is also used as an engine mount.

e) Latch Pins 15 and 16.

The Riegeistiu 15 determines the Las' ". Roivssvse! 3. The The locking pin 16 fixes the drum 4.

The device works as follows:

When the load drum 3 is moved s (! 1. Will the bolt lift 16 in the in F i g. 2 indicated position pushed, d. that is, the assembly drum 4 of the crane is set. The shaft 5 connected to the assembly drum 4 is therefore blocked against rotation and thereby defines the P.'anetenradträger 17 with which they connected is.

After it has been started, the drive motor 6 drives the sun gear 18 to and after the first planetary gear the sun gear 19. Since the planetary gear carrier 17 is blocked, that with the planetary gear carrier 17 is maintained connected Plan Menrad a rotary motion that this Wheel on the planetary ring 20 transfers. With the planetary crane / 20, the housing 2 also receives the Planetary ring 21 of the first stage its rotational movement, which, however, depends on the rotational movement of the planetary gear carrier the first stage is different. The housing 2 containing the planetary rings 20 and 21 is standing with the load drum 3 in Vei connection and offset this in rotation.

Conversely, when the drum 4 is to be used for example for erecting, de ^r tie Still 15 g is in the in F i. 1 position shown in order to fix the load drum 3. The Riegeisiiii 16 is; r. released this position to release the drum 4.

The wreaths 20 and 21 of the planetary gear are fixed via dns housing 2 and load drum 3.

The set in rotation Moiorwelle is after the both reduction stages drive the torsion shaft 5 and consequently also the drum 4 for erecting.

The winch can be a hydraulic motor, an internal combustion engine or an electric motor as the drive motor be assigned, which are arranged parallel to the winch axis while the rotary movement by Drive belt can be transferred, with a m: t a safety brake provided wheel on the drive shaft of the planetary gear can be placed.

The load drum 3 can also be fixed by the l.astscil of the crane, for example the Load hook is brought to the stop in its upper position against the trolley of the crane boom. at With this arrangement, the locking mechanism 15 can be omitted.

1 sheet of drawings

Claims (3)

Patent claims: 1. Winch with two drums that operate with a common, are connected by a motor-driven shaft via a planetary gear, the power flow in the planetary gear from the sun gear connected to the shaft via the Planet gear runs to the planetary ring and the planetary ring is assigned to the first drum is and the planet carrier drives the second drum, characterized in that a further sun gear (19) is non-rotatably arranged on the axis of the planetary gear carrier another planet gear on a further planet carrier (17) is in engagement, wherein the Axis of the carrier (17) is rotatably coupled to the second drum (4) that the further planetary gear is in engagement with a further planetary ring (20) which is associated with that of the first drum (3) Planetary ring (21) is rotatably connected via a housing (2), and that each drum (3, 4) can be locked for itself with the fixed winch housing (7. 9). 2. winch with two drums according to claim 1, characterized in that the locking of the Drums (3, 4) consists of two axially movable pins (15, 16), each on the opposite End faces (7, 9) of the winch are arranged. 3. winch with two drums according to claim I, characterized in that for the locking the first drum (3) the stop of a fixable in its highest position l.asthakens on the first drum (3) running rope is provided.