A hoist lifting system having planning and monitoring of components. The system monitors one or more components and may have a processing structure and memory storing instructions to configure the processing structure to: receive hoist machine data; determine a rotation speed of a bearing, a travel speed of a rope, a load on the bearing, a friction in the at least one bearing based on the hoist machine data; and store the rotation speed, the travel speed, the load, and the friction in a maintenance database in memory. The hoist lifting system may have the processing structure determine a wear of one or more components.

A cross-type limit switch (10) with a housing (12) that contains a gear mechanism (24) that includes a cover plate (38), base plate (48), and intermediate plate (42). The intermediate plate (42) has first and second cutouts (44, 46) within which respective gearwheels (54, 58) are arranged. The first and second gear wheels (54, 58) have respective plugthrough openings (56, 60), and a shaft (20) coupled to an actuating lever (18) outside the housing is rotatably mounted in a first bearing arrangement (22) connected to the housing. The actuating lever shaft (20) extends through the first plugthrough opening (56) of the first gear wheel (54) for rotating and radially locating the first gear wheel (54). A rotary switch (30) arranged in the housing (12) has a switch shaft (138) rotatably mounted in a second bearing arrangement (106, 34) that extend through the second plugthrough opening (60) of the second gearwheel for rotating and radially locating the second gearwheel (58).

A cross-type limit switch (10) with a housing (12) that contains a gear mechanism (24) that includes a cover plate (38), base plate (48), and intermediate plate (42). The intermediate plate (42) has first and second cutouts (44, 46) within which respective gearwheels (54, 58) are arranged. The first and second gear wheels (54, 58) have respective plugthrough openings (56, 60), and a shaft (20) coupled to an actuating lever (18) outside the housing is rotatably mounted in a first bearing arrangement (22) connected to the housing. The actuating lever shaft (20) extends through the first plugthrough opening (56) of the first gear wheel (54) for rotating and radially locating the first gear wheel (54). A rotary switch (30) arranged in the housing (12) has a switch shaft (138) rotatably mounted in a second bearing arrangement (106, 34) that extend through the second plugthrough opening (60) of the second gearwheel for rotating and radially locating the second gearwheel (58).

A rope hoist includes a rope drum mechanism easy to attach to a frame structure and clarified positioning reference. The rope drum is rotatably supported by a first support part on one end side and a second support part on another end side of the rope drum. A pair of supporting ribs having clearances with respect to a first drum support frame is provided with the first support part. A first connection member penetrates the supporting ribs and the first drum support frame in a state of both-end support. A second connection member penetrates a frame attachment portion and a second drum support frame in a state of cantilever. A support shaft couples the first support part and the second support part and is arranged on an axis passing through a position different from positions of the first connection member and the second connection member.

A rope hoist includes a rope drum mechanism easy to attach to a frame structure and clarified positioning reference. The rope drum is rotatably supported by a first support part on one end side and a second support part on another end side of the rope drum. A pair of supporting ribs having clearances with respect to a first drum support frame is provided with the first support part. A first connection member penetrates the supporting ribs and the first drum support frame in a state of both-end support. A second connection member penetrates a frame attachment portion and a second drum support frame in a state of cantilever. A support shaft couples the first support part and the second support part and is arranged on an axis passing through a position different from positions of the first connection member and the second connection member.

There is provided a mobile crane including an undercarriage, turning body turnably supported by the undercarriage, a boom derrickably supported by the turning body, a derricking unit that causes the boom to perform a derricking operation, a derricking force measurement unit that measures a derricking force by which the derricking unit causes the boom to perform the derricking operation, a ground angle acquisition unit that acquires a boom-to-ground angle which is an angle of the boom relative to a ground where the undercarriage is disposed, and an actually suspended load calculation unit that calculates an actually suspended load, based on the derricking force and the boom-to-ground angle.

There is provided a mobile crane including an undercarriage, turning body turnably supported by the undercarriage, a boom derrickably supported by the turning body, a derricking unit that causes the boom to perform a derricking operation, a derricking force measurement unit that measures a derricking force by which the derricking unit causes the boom to perform the derricking operation, a ground angle acquisition unit that acquires a boom-to-ground angle which is an angle of the boom relative to a ground where the undercarriage is disposed, and an actually suspended load calculation unit that calculates an actually suspended load, based on the derricking force and the boom-to-ground angle.

A victim retrieval apparatus for use with a vehicle. In some embodiments, the rescue basket comprises one or more wheels. The articulating head of the boom comprises a rotatable pulley for receiving the rescue line and is able to allow the vehicle to be parked in any position necessary while rescuing the victim. A knot-passing pulley enables a safety line (with emergency brake device) to be coupled to the basket thereby ensuring the safety of the victim in the basket at all times. The rescue basket comprises a remote control for controlling the winch speed that is able to be located at the winch itself, or be of a hand-held nature and attached at the rescue basket instead of at the vehicle if visual contact is problematic.

The invention relates to a crane comprising a movable undercarriage, a superstructure mounted rotatably on the undercarriage, a boom connected to the superstructure in a luffable manner, a derrick boom connected to the superstructure in an articulated manner, via which the boom is braced, a crane control system, a guide connected to the superstructure, and a derrick ballast. The derrick ballast comprises a ballast plate for stacking ballast elements, which is connected to the derrick boom via the ballast bracing and to the superstructure via the guide, as well as a ballast wagon. The ballast wagon comprises a standard heavy-load transport device with its own drive and drive control. According to the invention, the guide is connected to the ballast plate or the ballast wagon via a connection device which comprises a measuring device and is configured to detect a force which counteracts a relative movement between the ballast wagon and the guide. According to the invention, the crane control is connected to the drive control of the heavy-load transport device via a control connection and is configured to control and/or regulate the heavy-load transport device depending on the force detected by the measuring device.

The invention relates to a crane comprising a movable undercarriage, a superstructure mounted rotatably on the undercarriage, a boom connected to the superstructure in a luffable manner, a derrick boom connected to the superstructure in an articulated manner, via which the boom is braced, a crane control system, a guide connected to the superstructure, and a derrick ballast. The derrick ballast comprises a ballast plate for stacking ballast elements, which is connected to the derrick boom via the ballast bracing and to the superstructure via the guide, as well as a ballast wagon. The ballast wagon comprises a standard heavy-load transport device with its own drive and drive control. According to the invention, the guide is connected to the ballast plate or the ballast wagon via a connection device which comprises a measuring device and is configured to detect a force which counteracts a relative movement between the ballast wagon and the guide. According to the invention, the crane control is connected to the drive control of the heavy-load transport device via a control connection and is configured to control and/or regulate the heavy-load transport device depending on the force detected by the measuring device.