The invention relates to a drive device for supplying power to multiple engine pumps (4, 5), provided in the superstructure (3) of a mobile crane for superstructure functions, by way of a drive motor (2) arranged in the undercarriage (1) of the mobile crane, comprising a hydraulic motor (7) which is arranged in the superstructure (3) and hydraulically driven by the drive motor (2) and which comprises a first mechanical output which couples at least one first engine pump (4) to the hydraulic motor (7) and a second mechanical output which couples at least one second engine pump (5) to the hydraulic motor (7). The invention also relates to a mobile crane comprising this drive device.

A portable lift may attach to a hitch of a vehicle. The portable lift may include an attachment member configured to engage the hitch. An elevation member may include a proximal end and a distal end opposite the proximal end. The proximal end of the elevation member may be connected to the attachment member. A platform may be slidably disposed on the elevation member. A pulley may be disposed nearer the distal end than the proximal end of the elevation member. A winch may be configured to move the platform up and down on the elevation member. The winch may include a cable connected to the platform and engaging the pulley.

Methods and apparatus to power a crane on a work truck using an engine-powered service pack are disclosed. An example auxiliary power system for a vehicle includes an engine, a generator configured to convert mechanical energy from the engine to electrical energy, and power conversion circuitry configured to provide electrical power to a crane to enable the crane to lift at least a portion of a rated load, and configured to convert the electrical energy from the generator to output DC power.

Methods and apparatus to power a crane on a work truck using an engine-powered service pack are disclosed. An example auxiliary power system for a vehicle includes an engine, a generator configured to convert mechanical energy from the engine to electrical energy, and power conversion circuitry configured to provide electrical power to a crane to enable the crane to lift at least a portion of a rated load, and configured to convert the electrical energy from the generator to output DC power.

The present invention relates to a crane, particularly a crawler crane, whereby at least two different drive units can be alternately connected with the crane. The invention is additionally directed at corresponding drive units.

The present invention relates to a crane, particularly a crawler crane, whereby at least two different drive units can be alternately connected with the crane. The invention is additionally directed at corresponding drive units.

A vehicle includes a chassis supporting a plurality of wheels, a prime mover supported by the chassis, and a vehicle body supported by the chassis and including a main body and a cab. A boom assembly is coupled to the main body, including an electric actuator and an electric motor, and an electrical accessory equipment system is also coupled to the main body. The electrical accessory equipment system comprises one or more batteries and an electric power control box housing a power conditioner that is configured to supply power from the one or more batteries to the electric actuator and/or the electric motor.

A vehicle includes a chassis supporting a plurality of wheels, a prime mover supported by the chassis, and a vehicle body supported by the chassis and including a main body and a cab. A boom assembly is coupled to the main body, including an electric actuator and an electric motor, and an electrical accessory equipment system is also coupled to the main body. The electrical accessory equipment system comprises one or more batteries and an electric power control box housing a power conditioner that is configured to supply power from the one or more batteries to the electric actuator and/or the electric motor.

This crane has a turning body that supports a boom, the crane including: a travel body that has a frame for supporting a front-side axle and a rear-side axle; and a motor that is disposed below the frame and between the front-side axle and the rear-side axle, the motor being connected to the front-side axle and the rear-side axle.

This crane has a turning body that supports a boom, the crane including: a travel body that has a frame for supporting a front-side axle and a rear-side axle; and a motor that is disposed below the frame and between the front-side axle and the rear-side axle, the motor being connected to the front-side axle and the rear-side axle.