Mobile shaft winch

Abstract

A mobile shaft winch includes a carrier vehicle with a vehicle drive, which has an internal combustion engine, a rigid base frame and a rotary platform which is arranged on the base frame via a rotary connection. A drum winch is arranged on the rotary platform with a rope drum which is driven by a winch drive and designed for the winding on and unwinding of a haulage rope. The winch drive includes only an electric motor. A control system is designed for a selective operation of the electric motor on a mains supply system or on an electric generator. The internal combustion engine of the vehicle drive, drives the generator, and the generator and the internal combustion engine are arranged on the carrier vehicle.

Claims

1. A mobile shaft winch, comprising: a carrier vehicle having a vehicle drive, a rigid base frame, and a rotary platform arranged on the base frame via a rotary connection, the vehicle drive having an internal combustion engine; a drum winch arranged on the rotary platform and including a rope drum driven solely by an electric motor of a winch drive and configured to wind on and unwind a haulage rope, wherein a cage is attached to the haulage rope, the electric motor is a servo motor, and the rope drum, the electric motor, and the haulage rope of the drum winch are configured to transport the cage in a shaft; an electric generator driven by the internal combustion engine of the vehicle drive via a power take-off constructed as an engageable shaft on an auxiliary output of the vehicle drive, wherein the generator and the internal combustion engine are arranged on the carrier vehicle; and a control system controlling the winch drive, the control system configured to selectively operate the electric motor on a mains supply system or on the electric generator.

2. The mobile shaft winch of claim 1, further comprising a telescopic jib arranged on the rotary platform and including guide elements for the haulage rope.

3. The mobile shaft winch of claim 1, further comprising guide element arranged at a distance from the mobile shaft winch.

4. The mobile shaft winch of claim 1, wherein the cage attached to the haulage rope is configured to transport people and/or equipment in the shaft.

5. A mobile shaft winch, comprising a carrier vehicle having a vehicle drive, a rigid base frame, and a rotary platform arranged on the base frame via a rotary connection, the vehicle drive having an internal combustion engine; a drum winch arranged on the rotary platform and including a rope drum driven solely by an electric motor of a winch drive and configured to wind on and unwind a haulage rope; an electric generator driven by the internal combustion engine of the vehicle drive via a power take-off constructed as an engageable shaft on an auxiliary output of the vehicle drive, wherein the generator and the internal combustion engine are arranged on the carrier vehicle; a control system controlling the winch drive, the control system configured to selectively operate the electric motor on a mains supply system or on the electric generator; and a hydraulic system arranged on the carrier vehicle and configured to operate an auxiliary function of the mobile shaft winch, the hydraulic system including a tank holding hydraulic fluid and an electrically driven hydraulic pump having a suction side and a pressure side, wherein the suction side is in fluid conducting communication with the tank and the pressure side is in fluid conducting communication with an actuator for the operation of the auxiliary function.

6. The mobile shaft winch of claim 5, wherein the actuator of the hydraulic system includes at least one of a hydraulic cylinder and a hydraulic motor.

7. The mobile shaft winch of claim 5, wherein the electrically driven hydraulic pump is configured for operation on the electric generator.

8. The mobile shaft winch of claim 5, wherein the electrically driven hydraulic pump is configured for selective operation on the mains supply system and on the electric generator.

9. The mobile shaft winch of claim 5, further comprising extendable hydraulic supports, the auxiliary function including extension of the hydraulic supports.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is explained in more detail below with reference to the drawings. In the drawings

(2) FIG. 1 shows a schematic overall view of a mobile shaft winch according to the invention,

(3) FIG. 2 shows a basic view for illustrating the drive concept of the mobile shaft winch and

(4) FIG. 3 shows a basic view for illustrating the drive concept of a mobile shaft winch according to the prior art.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

(5) FIG. 1 shows a mobile shaft winch with an automotive truck as the carrier vehicle (11) with a vehicle drive (12) which is formed by a diesel engine with a flanged-on transmission. A rotary platform (15) is arranged on a rigid base frame (13) of the automotive truck via a rotary connection (14).

(6) Located on the rotary platform (15) is a drum winch (16), which is driven by a winch drive, for the winding on and unwinding of a haulage rope (17). A telescopic jib (18) extends from the drum winch (16), with the aid of which the haulage rope (17), with a cage (50) attached to its rope end, is oriented over the shaft opening (the cage (50) is shown schematically in FIG. 1 and is not meant to depict a shape, a size, or any other, characteristic of, the cage (50)). Rotatably mounted on the end of the telescopic jib (18) is a deflection roller (19) for deflecting the haulage rope (17).

(7) Also located on the rotary platform (15) are the drive components of the drum winch (16) and also for the auxiliary functions which are explained in more detail below with reference to FIG. 2.

(8) The drum winch (16) comprises a rope drum (21) which is connected to a winch drive (22) which is formed by an electric motor (22a) and a transmission (22b) which steps down the rotational speed of the electric motor (22a). Via a control system (23), the electric motor (22a) can be selectively operated on a mains supply system (24) or on an electric generator (25). During standard operation, the electric motor (22a) is operated on the mains supply system (24). If the mains supply system (24) is not available, the generator (25) undertakes the power supply of the electric motor (22a).

(9) The electric motor (22a) of the winch drive (22) is preferably a servo motor. As a result of this, a precise controlling of the angular position of the motor shaft and also of the rotational speed and acceleration is possible. The use of a servo motor for the winch drive (22) enables a considerably more accurate controlling of the drum winch and therefore positioning of the cage which is fastened on the haulage rope end.

(10) The generator (25) is driven via a power take-off (26) of the diesel engine (12a) of the automotive truck, optimally utilizing the space conditions of the mobile shaft winch (10) and also of the vehicle drive (12) which is available anyway.

(11) In the case of the power take-off (26), it is an engageable drive shaft on an auxiliary output of the transmission of the vehicle drive (12).

(12) Also arranged on the rotary platform (15) of the mobile shaft winch (10) is a hydraulic system (27) which is designed for an operation of the auxiliary functions of the mobile shaft winch (10). The functions are especially for the raising and telescoping of the telescopic jib (18) and also for the rotating of the rotary platform (15). As actuators for these auxiliary functions use is made of hydraulic motors and hydraulic cylinders which by a hydraulic pump (28) are pressurized with a hydraulic fluid from a hydraulic tank (30). The hydraulic pump (28) is driven by an electric motor (29) which during standard operation is supplied with power from the mains supply system (24). In the event of non-availability of the mains supply system (24), the existing generator (25) undertakes the power supply.

(13) As a result of the drive concept according to the invention of the mobile shaft winch (10), the hydraulic system (27) for the auxiliary functions can be of a considerably smaller, simpler and lighter construction. The additional diesel engine which is required in the prior art is dispensed with as a redundant drive for the hydraulic system since the diesel engine (12a) of the automotive truck, which is available anyway, is used effectively via the power take-off (26) both for creating the drive energy for the winch drive (22) and for operating the auxiliary units.

(14) TABLE-US-00001 List of designations No. Designation 1 Winch drive 1a Hydraulic motor 1b Transmission 2 Winch 3 Tank 4 Pump 4a Diesel engine 5 Pump 5a Electric motor 6 Hydraulic control system 7 Mains supply system 10 Mobile shaft winch 11 Carrier vehicle 12 Vehicle drive 12a Diesel engine of automotive truck 13 Base frame 14 Rotary connection 15 Rotary platform 16 Drum winch 17 Haulage rope 18 Telescopic jib 19 Deflection roller 20 Control cabin 21 Rope drum 22 Winch drive 22a Electric motor 22b Transmission 23 Control system 24 Mains supply system 25 Generator 26 Power take-off 27 Hydraulic system 28 Hydraulic pump 29 Electric motor 30 Tank