Cable winch

Patent metadata

Field	Value
Publication number	US-10106380-B2
Application number	US-201414762721-A
Country	US
Kind code	B2
Filing date	Jan 20, 2014
Priority date	Jan 22, 2013
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

The invention relates to a cable winch, preferably a sprocket-type large cable winch for deep-sea applications, having a cable drum, the end faces of which are enclosed by end discs, and having at least one drive unit for driving the cable drum. The drive unit comprises a motor and a gear mechanism which on the output side drives an output wheel, said wheel being in engagement with a drive wheel, preferably in the form of a sprocket, provided on one of the end discs. According to the invention, the output wheel of the drive unit is arranged between motor and gear mechanism, and the motor and the gear mechanism extend towards different sides of the end disc.

First claim

The invention claimed is:

1. A cable winch comprising a cable drum, end faces of which are enclosed by end discs, and at least one drive unit for driving the cable drum, wherein the drive unit comprises a motor, a gear mechanism, and a drive shaft that connects the motor with the gear mechanism, where an output side of the gear mechanism drives an output wheel, and where an input side of the gear mechanism is driven by the motor, said output wheel being in engagement with a drive wheel in the form of a sprocket provided on one end disc of the end discs, wherein the output wheel of the drive unit is arranged between the motor and the gear mechanism, in a direction of a longitudinal axis of the cable drum, and the motor and the gear mechanism of the drive unit extend toward different sides of the end disc, relative to the longitudinal axis; wherein the motor, the gear mechanism, and the output wheel are coaxial.

2. The cable winch as cited in claim 1 , wherein the drive unit is attached on a first bearing shield of two bearing shields on which the cable drum is pivoted, on one side of the cable drum, wherein the motor and the gear mechanism of the drive unit extend towards and are arranged on opposite sides of the first bearing shield.

3. The cable winch as cited in claim 1 , wherein the output wheel of the drive unit is formed as a hollow component and has an opening recess, through which the drive shaft which rotates through the drive unit extends, which connects the motor with the gear mechanism and wherein the output wheel is coupled to an outer face of the drive wheel.

4. The cable winch as cited in claim 3 , wherein the drive shaft is coupled torque-proof with a first planetary stage that is arranged in an end section of the gear mechanism facing away from the motor.

5. The cable winch as cited in claim 1 , wherein the gear mechanism is developed as planetary gearing, with a first planetary stage, including an input element, of said planetary gearing connected with the drive shaft coupled with the motor, and with a second planetary stage of said planetary gearing coupled with the output wheel of the drive unit.

6. The cable winch as cited in claim 1 , wherein the motor and the gear mechanism of the drive unit are positioned above the end disc with respect to a base which the cable winch is supported on and wherein the motor and the gear mechanism are arranged on a same side of the cable drum relative to the longitudinal axis.

7. The cable winch as cited in claim 5 , wherein all planetary gear stages are arranged on a same side of the output wheel of the drive unit.

8. The cable winch as cited in claim 1 , wherein the drive unit includes a brake which is coupled with an input element of the gear mechanism and/or with the drive shaft connected with said gear mechanism linked with the motor and wherein the brake is arranged on a side of the gear mechanism opposite of the motor.

9. The cable winch as cited in claim 8 , wherein the brake attaches onto the drive shaft, onto which, because of a gear mechanism step-up/step-down ratio, a lowest torsional moment of the drive unit is applied.

10. The cable winch as cited in claim 8 , wherein the drive unit has a modular design, wherein a first assembly is formed from the gear mechanism, on a front side of which assembly a second assembly formed by the motor is mounted detachably and/or on a second front side of which a third module formed by the brake is mounted detachably.

11. The cable winch as cited in claim 8 , wherein between the drive shaft extending through the output wheel and the motor and/or between the drive shaft extending through the output wheel and the brake a detachable connection transmitting torque is provided.

12. The cable winch as cited in claim 8 , wherein the motor, the gear mechanism, and the brake are arranged consecutively, coaxial with reference to a main axis of the drive unit, wherein the gear mechanism is arranged between the motor and the brake.

13. The cable winch as cited in claim 1 , wherein the output wheel of the drive unit and the drive wheel provided on one of the end discs form a spur gear stage and wherein the drive wheel is provided on an outer perimeter of one of the end discs.

14. The cable winch as cited in claim 1 , wherein the drive unit is arranged in an area of an outer perimeter of the end disc and/or outside of a cable drum perimeter of the cable drum and extends with a drive unit main axis approximately parallel to the longitudinal axis and wherein the drive unit main axis is a common axis of each of the motor, the gear mechanism, and the output wheel.

15. The cable winch as cited in claim 1 , wherein the one end disc is arranged on an opposite side of the cable drum from another end disc of the end discs, and wherein the drive unit extends on both sides of a plane defined from the one end disc as well as also on both sides of a plane defined from a first bearing shield of two bearing shields of the cable winch, the first bearing shield arranged on a same side of the cable drum as the one end disc.

16. The cable winch as cited in claim 1 , wherein the at least one drive unit is a first drive unit that drives a first end disc of the end discs, where the output wheel of the first drive unit is in engagement with the drive wheel in the form of the sprocket provided on the first end disc of the end discs, and further comprising:
a second drive unit that drives a second end disc of the end discs, wherein the second drive unit comprises a motor, a gear mechanism, and a drive shaft that connects the motor with the gear mechanism, where an output side of the gear mechanism of the second drive unit drives an output wheel, and where an input side of the gear mechanism of the second drive unit is driven by the motor of the second drive unit, said output wheel being in engagement with a drive wheel in the form of a sprocket provided on the second end disc of the end discs, wherein the output wheel of the second drive unit is arranged between the motor and the gear mechanism of the second drive unit, in a direction of a longitudinal axis of the cable drum, and the motor and the gear mechanism of the second drive unit extend toward different sides of the second end disc, relative to the longitudinal axis,
wherein the first and second drive units allocated to different end discs are arranged reciprocally oriented such that either the motors of both the first and second drive units are arranged on an inside and the gear mechanisms of both the first and second drive units are arranged on an outside, or the gear mechanisms of both the first and second drive units are arranged on the inside and the motors of both the first and second drive units are arranged on the outside.

17. The cable winch as cited in claim 1 , wherein a hoisting cable that is wound-up on the cable drum has a length of more than 1000 m and/or the cable drum has a length/diameter ratio L/D>1 and/or the cable drum has a diameter (D)>2 m.

18. The cable winch as cited in claim 1 , wherein the cable winch is a sprocket-type large cable winch for deep-sea applications.

19. The cable winch as cited in claim 15 , wherein the motor is arranged on an outside of the first bearing shield and the gear mechanism is arranged on an inside of the first bearing shield.

20. The cable winch as cited in claim 15 , wherein the motor is arranged on an inside of the first bearing shield and the gear mechanism is arranged on an outside of the first bearing shield.

Assignees

• Liebherr Components Biberach Gmbh

Inventors

• Hausladen Norbert
• Schindler Viktor

Classifications

• B66D1/28

  Other constructional details · CPC title

• B66D1/12

  incorporating electric motors · CPC title

• B66D5/24

  Operating devices · CPC title

• B66D1/14 Primary

  Power transmissions between power sources and drums or barrels {(including brakes, one-way brakes, one-way clutches, clutches activated alternately with brakes, fixed ratio gearing unless otherwise provided for in B66D1/16 - B66D1/24)} · CPC title

• B66D1/22

  Planetary or differential gearings (for actuating grab buckets B66D1/70 ){, i.e. with planet gears having movable axes of rotation} · CPC title