MOBILE SHAFT WINCH

Abstract

A mobile shaft winch, includes a carrier vehicle having a vehicle drive, with an internal combustion engine, a rigid main frame, and a rotary platform arranged on the main frame by a rotary connection. A drum winch is arranged on the rotary platform and has a cable drum driven by a winch drive. A hydraulic system arranged on the carrier vehicle includes a hydraulic pump driven by an electric motor a pressure side of the hydraulic pump is in fluid-conducting connection with a hydraulic motor of the winch drive. The internal combustion engine of the vehicle drive drives an electric generator through an auxiliary output drive. The electric motor is configured to be selectively operated on an electricity supply grid or the electric generator.

Claims

1-15. (canceled)

16. A mobile shaft winch, comprising: a carrier vehicle with a vehicle drive, a rigid mainframe, and a rotary platform arranged on the rigid mainframe by a rotary connection, the vehicle drive including an internal combustion engine and a transmission; a drum winch arranged on the rotary platform and including a cable drum holding a conveyor cable and driven by a winch drive, the cable drum configured to wind and unwind the conveyor cable, the winch drive comprising a hydraulic motor; a hydraulic system arranged on the carrier vehicle including a tank configured to hold hydraulic fluid, and a hydraulic pump driven exclusively by an electric motor, the hydraulic pump having a suction side in fluid-conducting connection to the tank and a pressure side in fluid-conducting connection with the hydraulic motor, wherein the hydraulic motor is driven only by the hydraulic pump; and an electric generator driven by an auxiliary output drive of the internal combustion engine, the auxiliary output drive being a selectable shaft at an auxiliary output of the transmission of the vehicle drive, wherein the electric motor is selectively operated in a first mode, in which the electric motor is supplied by an electric supply grid, and a second mode, in which the electric motor is supplied by the electric generator.

17. The mobile shaft winch as claimed in claim 16, wherein the pressure side of the hydraulic pump is in fluid-conducting connection with at least one actuator operating an auxiliary device of the mobile shaft winch.

18. The mobile shaft winch as claimed in claim 17, wherein the at least one actuator includes at least one of a hydraulic cylinder and a hydraulic motor for the operation of the auxiliary device.

19. The mobile shaft winch as claimed in claim 16, further comprising a telescopic boom arranged on the rotary platform, the telescopic boom including guide elements for the conveyor cable.

20. The mobile shaft winch as claimed in claim 16, wherein the conveyor cable runs over guide elements arranged at a distance from the mobile shaft winch.

21. The mobile shaft winch as claimed in claim 16, wherein the carrier vehicle has extendable hydraulic supports.

22. The mobile shaft winch as claimed in claim 16, wherein the hydraulic system is arranged on the rotary platform.

23. The mobile shaft winch as claimed in claim 16, wherein the electric motor is connected to the electricity supply grid or the generator via a slip ring.

24. The mobile shaft winch as claimed in claim 16, wherein the electric motor is connected to the electricity supply grid or the generator via a cable routing system.

25. The mobile shaft winch as claimed in claim 16, wherein the internal combustion engine of the vehicle drive has an engine controller with an interface, which is configured for controlling the internal combustion engine during hydraulic motor operation.

26. The mobile shaft winch as claimed in claim 25, wherein the interface is connected to the controller of the drum winch.

27. A mobile shaft winch, comprising: a carrier vehicle with a vehicle drive, a rigid mainframe, and a rotary platform arranged on the rigid mainframe by a rotary connection, the vehicle drive including an internal combustion engine and a transmission; a drum winch arranged on the rotary platform and including a cable drum holding a conveyor cable and driven by a winch drive, the cable drum configured to wind and unwind the conveyor cable, the winch drive comprising a hydraulic motor; a hydraulic system arranged on the carrier vehicle including a tank configured to hold hydraulic fluid, and a hydraulic pump having a suction side in fluid-conducting connection to the tank and a pressure side in fluid-conducting connection with the hydraulic motor, wherein the hydraulic motor is driven only by the hydraulic pump and the hydraulic pump is arranged on the main frame of the carrier vehicle, the hydraulic pump is directly driven by an auxiliary output drive of the internal combustion engine, the auxiliary output drive being a selectable shaft at an auxiliary output of a transmission of the vehicle drive, and the pressure side of the hydraulic pump is connected to the hydraulic motor on the rotary platform in a fluid-conducting manner via a rotary union or a hose.

28. The mobile shaft winch as claimed in claim 27, wherein the pressure side of the hydraulic pump is in fluid-conducting connection with at least one actuator operating an auxiliary function of the mobile shaft winch.

29. The mobile shaft winch as claimed in claim 27, wherein the internal combustion engine of the vehicle drive has an engine controller with an interface, which is configured for controlling the internal combustion engine during hydraulic motor operation.

30. The mobile shaft winch as claimed in claim 29, wherein the interface is connected to the controller of the drum winch.

Description

[0035] The invention is explained in greater detail below with reference to the drawings, in which:

[0036] FIG. 1 shows a schematic overall depiction of a mobile shaft winch according to the invention,

[0037] FIG. 2 shows a diagrammatic depiction intended to illustrate the drive concept of the mobile shaft winch, and

[0038] FIG. 3 shows a diagrammatic depiction intended to illustrate the drive concept of a mobile shaft winch according to the prior art.

[0039] FIG. 1 shows a mobile shaft winch having a truck as a carrier vehicle (11), having a vehicle drive (12), which is formed by a diesel engine with a flange-mounted transmission. A rotary platform (15) is arranged on a rigid main frame (13) of the truck via a rotary connection (14).

[0040] On the rotary platform (15) there is a drum winch (16), driven by a winch drive, for winding and unwinding a conveyor cable (17). A telescopic boom (18), with the aid of which the conveyor cable (17), together with the cage (not shown in the figure) attached to the cable end thereof, is aligned over the shaft opening, extends from the drum winch (16). A deflection roller (19) is rotatably mounted on the end of the telescopic boom (18) in order to deflect the conveyor cable (17).

[0041] On the rotary platform (15) there are furthermore individual drive components of the drum winch (16) and for the auxiliary functions, these being explained in greater detail below with reference to FIG. 2.

[0042] The drum winch (16) comprises a cable drum (21), which is connected to a winch drive (22), which is formed by a hydraulic motor (22a) and a transmission (22b) which reduces the speed of the hydraulic motor (22a).

[0043] The mobile shaft winch (10) furthermore has a hydraulic system (27), which is arranged on the carrier vehicle (11) and has a tank (30) for holding hydraulic fluid, a first hydraulic pump (28a) having a suction side and a pressure side, and a second hydraulic pump (28b) having a suction side and a pressure side, wherein the suction sides of the first and second hydraulic pumps (28a, 28b) are in fluid-conducting connection with the tank (30).

[0044] The pressure side of the first hydraulic pump (28a) is in fluid-conducting connection with the hydraulic motor (22a). In the line from the pressure side of the first hydraulic pump (28a) to the hydraulic motor (22a) there is a hydraulic controller (23), which is configured for controlling the direction of rotation and speed of the hydraulic motor (22a). For this purpose, the hydraulic controller (23) has electrically actuated, hydraulic proportional directional control valves.

[0045] The second hydraulic pump (28b) is configured for operation of the auxiliary function of the mobile shaft winch (10). In particular, this is the function of raising and telescoping the telescopic boom (18) and rotating the rotary platform (15). As actuators for the auxiliary functions, use is made of hydraulic motors and hydraulic cylinders, which are supplied with the hydraulic fluid from the hydraulic tank (30) by the second hydraulic pump (28b). The hydraulic pump (28b) is driven by the same electric motor (29) as the first hydraulic pump (28a), which is supplied with power from the electricity supply grid (24) in regular operation. If the electricity supply grid (24) is not available, the generator (25), which is operated at the auxiliary output drive (26) of the truck diesel engine (12a), provides the power supply.

[0046] Owing to the fact that it is attached to the auxiliary output drive (26), the generator (25) is secured on the main frame of the carrier vehicle (11). Power transmission to the electric motor (29) on the rotary platform (15), which drives the hydraulic pumps (28a, 28b), is via a slip ring (not shown in the drawing) or a guided cable. Power transmission from the grid connection to the electric motor (29) is accomplished directly via a cable with a plug connector. As an alternative, power transmission can also be accomplished via a slip ring.

[0047] By virtue of the drive concept according to the invention of the mobile shaft winch (10), the additional diesel engine required as a redundant drive for the hydraulic system in the prior art is eliminated since the truck diesel engine (12a), which is present in any case, can be used effectively via the auxiliary output drive (26) both to generate the driving power for the winch drive (22) and to operate the auxiliary units when required.

LIST OF REFERENCE SIGNS

[0048] No. Designation [0049] 1 Winch drive [0050] 1a Hydraulic motor [0051] 1b Transmission [0052] 2 Winch [0053] 3 Tank [0054] 4 Pump [0055] 4a Diesel engine [0056] 5 Pump [0057] 5a Electric motor [0058] 6 Hydraulic controller [0059] 7 Electricity supply grid [0060] 10 Mobile shaft winch [0061] 11 Carrier vehicle [0062] 12 Vehicle drive [0063] 12a Truck diesel engine [0064] 13 Main frame [0065] 14 Rotary connection [0066] 15 Rotary platform [0067] 16 Drum winch [0068] 17 Conveyor cable [0069] 18 Telescopic boom [0070] 19 Deflection roller [0071] 20 Control cab [0072] 21 Cable drum [0073] 22 Winch drive [0074] 22a Hydraulic motor [0075] 22b Transmission [0076] 23 Controller [0077] 24 Electricity supply grid [0078] 25 Generator [0079] 26 Auxiliary drive [0080] 27 Hydraulic system [0081] 28a First hydraulic pump [0082] 28b Second hydraulic pump [0083] 29 Electric motor [0084] 30 Tank