A lifting mechanism includes a lifting beam, a hanging portion suspended below the lifting beam and including a hanging base, a hanging chain, a movable sprocket disposed on the hanging base, a distance adjusting sprocket, and a power mechanism. The distance adjusting sprocket and the power mechanism are arranged side by side and separately on the lifting beam. The power mechanism includes a fixed sprocket and a driving portion. The fixed sprocket is driven by the driving portion to drive the hanging chain to move, so as to lift or lower the hanging portion. An end of the hanging chain is fixed to the lifting beam, and the other end of the hanging chain engages the movable sprocket, the fixed sprocket, and the distance adjusting sprocket, or the other end of the hanging chain engages the movable sprocket, the distance adjusting sprocket, and the fixed sprocket.

A driven reel trolley includes a carriage having a lower carriage section formed from opposing longitudinal members and transverse connecting members extending between and connecting the opposing longitudinal members. A pair of opposing support beams extend upwardly from the lower carriage. Each beam has a shaft support opening at about the top thereof for accommodating an associated shaft. A pair of non-driven wheels is mounted to the lower carriage section on opposing transverse sides of the lower carriage section and a pair of drive wheels is mounted to the lower carriage section, on opposing transverse sides of the lower carriage section, spaced from the non-driven wheels. A pair of drive trains operably connects the shaft and a respective one of the drive wheels. Each drive train includes a transmission and each transmission is operably engageable with and disengageable from the shaft and its respective drive wheel.

A drive device for a handling trolley, including: a chassis; a wheel carrier; a drive wheel; a steering motor for rotating the wheel carrier relative to the chassis; a reduction gear connecting the steering motor to the wheel carrier, the reduction gear including a planetary gear set including an internal sun gear, at least one planet gear, and a planet carrier on which the planet gear is mounted, a ring gear surrounding the internal sun gear and the planet gear. The shaft of the steering motor is fixed relative to the internal sun gear, the wheel carrier is fixed relative to either the planet carrier or the ring gear, and the chassis is fixed relative to the other one of the two components.

A drive device for a handling trolley, including: a chassis; a wheel carrier; a drive wheel; a steering motor for rotating the wheel carrier relative to the chassis; a reduction gear connecting the steering motor to the wheel carrier, the reduction gear including a planetary gear set including an internal sun gear, at least one planet gear, and a planet carrier on which the planet gear is mounted, a ring gear surrounding the internal sun gear and the planet gear. The shaft of the steering motor is fixed relative to the internal sun gear, the wheel carrier is fixed relative to either the planet carrier or the ring gear, and the chassis is fixed relative to the other one of the two components.

A transport system including a plurality of transport vehicles is provided. Each of the plurality of transport vehicles includes: a distance detecting portion configured to detect a distance D to a preceding transport vehicle, which is another transport vehicle traveling in front of the corresponding transport vehicle; a signal transmitting portion capable of transmitting a start signal to a subsequent transport vehicle, which is another transport vehicle traveling behind the corresponding transport vehicle; and a signal receiving portion capable of receiving the start signal that is transmitted from the preceding transport vehicle. Each of the plurality of transport vehicles is configured to transmit, when starting to travel, the start signal using the signal transmitting portion, to start to travel upon receiving the start signal from the preceding transport vehicle using the signal receiving portion, and to stop when the distance D to the preceding transport vehicle that is detected by the distance detecting portion is equal to or smaller than a set distance TH1.

A transport system including a plurality of transport vehicles is provided. Each of the plurality of transport vehicles includes: a distance detecting portion configured to detect a distance D to a preceding transport vehicle, which is another transport vehicle traveling in front of the corresponding transport vehicle; a signal transmitting portion capable of transmitting a start signal to a subsequent transport vehicle, which is another transport vehicle traveling behind the corresponding transport vehicle; and a signal receiving portion capable of receiving the start signal that is transmitted from the preceding transport vehicle. Each of the plurality of transport vehicles is configured to transmit, when starting to travel, the start signal using the signal transmitting portion, to start to travel upon receiving the start signal from the preceding transport vehicle using the signal receiving portion, and to stop when the distance D to the preceding transport vehicle that is detected by the distance detecting portion is equal to or smaller than a set distance TH1.

A braking system for a rail-mounted traveling unit of a transfer vehicle. A brake arrangement can be adjusted between a braking position and a venting position and which is designed to exert a settable braking torque in the braking position. A control unit is designed to determine a braking torque and to activate accordingly the brake arrangement. A sensor arrangement detects an operating state of the transfer vehicle and external operating influences and transmits these to the control unit. During operation of the transfer vehicle the sensor arrangement detects the operating state of the transfer vehicle and the external operating influences on the transfer vehicle at periodic intervals and transmits these to the control unit as operating state data and operating influence data. During a braking process, the control unit determines a braking torque to be applied and activates the brake arrangement.

The disclosure relates to a driving apparatus for a mobile crane comprising an internal combustion engine, an electric machine, and a transfer case for selectively distributing power outputted to the transfer case to a driving mechanism, and to a pump arrangement for performing crane operation, wherein the internal combustion engine cooperates with an input shaft of the transfer case that cooperates with the driving mechanism, the electric machine cooperates with an intermediate shaft of the transfer case, and the pump arrangement cooperates with an output shaft of the transfer case. The driving apparatus comprises a first clutch arranged between the input and intermediate shafts for coupling them to each other or decoupling them from each other as required, and a second clutch arranged between the intermediate and output shafts for coupling them to each other or decoupling them from each other as required.

The disclosure relates to a driving apparatus for a mobile crane comprising an internal combustion engine, an electric machine, and a transfer case for selectively distributing power outputted to the transfer case to a driving mechanism, and to a pump arrangement for performing crane operation, wherein the internal combustion engine cooperates with an input shaft of the transfer case that cooperates with the driving mechanism, the electric machine cooperates with an intermediate shaft of the transfer case, and the pump arrangement cooperates with an output shaft of the transfer case. The driving apparatus comprises a first clutch arranged between the input and intermediate shafts for coupling them to each other or decoupling them from each other as required, and a second clutch arranged between the intermediate and output shafts for coupling them to each other or decoupling them from each other as required.

A low-construction trolley for a wire rope hoist is arranged to travel along a lower flange of a horizontal rail, on both longitudinal edges thereof The trolley includes a trolley frame; bearing wheels that are attached to the trolley frame and arranged to travel on an upper surface of the lower flange of the rail; a hoisting mechanism including a rope drum for a hoisting rope, a hoisting member in cooperation with the hoisting rope for hoisting a load, a hoisting motor for driving the rope drum, and a gear to interconnect the hoisting motor and the rope drum; whereby the rope drum is supported to one side of the trolley frame and the hoisting member is arranged to travel under the rail in a vertical plane (A) passing substantially through the middle of the beam. For balancing the trolley without using a counterweight, the hoisting motor is placed under the rail and at least partly on a different side than the rope drum in relation to a vertical plane (B) passing through contact lines of the bearing wheels that touch the lower flange of the rail on the rope drum side.