This crane is provided with: a boom; a wire rope suspended down from a leading end section of the boom; a suspender that is fixed to a lower end of the wire rope and is for suspending a slinging tool for hanging a load; a calculation unit that calculates a first load, which is the weight of a member that is suspended down from the suspender; a slinging tool database unit that stores information pertaining to the slinging tool corresponding to the first load; a determination unit that determines whether a load is being suspended from the suspender; and a control unit that acquires the information pertaining to the slinging tool corresponding to the first load from the slinging tool database unit if the load is being suspended, and sets the vertical length of the slinging tool on the basis of the acquired information pertaining to the slinging tool.

A tower for a material handler includes a housing surrounding an interior space. The tower has an interior mounting system including a base plate through which a plurality of interior mount openings pass. The interior mount openings are located at positions of the base plate that are interior of the housing. In some embodiments, the tower is part of a material handler that also includes two stabilizers located on opposite sides of the tower, a platform located above the tower, and a boom projecting away from the platform.

A tower for a material handler includes a housing surrounding an interior space. The tower has an interior mounting system including a base plate through which a plurality of interior mount openings pass. The interior mount openings are located at positions of the base plate that are interior of the housing. In some embodiments, the tower is part of a material handler that also includes two stabilizers located on opposite sides of the tower, a platform located above the tower, and a boom projecting away from the platform.

A crane for lifting and transporting loads includes a base frame for transferring the loads of the crane onto a support surface by a plurality of wheels. The wheels are capable of rotating relative to the base frame so as to change the camber angle of the wheels.

A crane for lifting and transporting loads includes a base frame for transferring the loads of the crane onto a support surface by a plurality of wheels. The wheels are capable of rotating relative to the base frame so as to change the camber angle of the wheels.

Provided is a crane that is capable of effectively suppressing oscillation related to the pendulum resonance frequency generated in a suspended load on the basis of the suspended length of a wire rope. The crane 1 calculates a suspended load oscillation resonance frequency ωx(n) determined on the basis of the suspended length L(n) of a wire rope (14.Math.16), and generates a control signal C(n) for an actuator according to an arbitrarily defined operation signal, and, on the basis of the resonance frequency ωx(n), generates from the control signal C(n) a filtering control signal Cd(n) for the actuator in which a frequency component in an arbitrarily defined frequency range is attenuated by an arbitrarily defined percentage. The frequency range of the attenuated frequency component and/or the percentage of attenuation is altered on the basis of the suspended length L(n) of the wire rope (14.Math.16).

To provide a crane capable of stably traveling a transporter capable of supporting a counterweight in cooperation with slewing of an upper slewing body. The crane has a connecting body connecting the self-propelled transporter and the upper traveling body, a transporter angle detecting unit, and a steering angle setting unit. A transporter connecting portion of the connecting body is rotatably connected to the self-propelled transporter about a rotation center axis, and moves relative to a slewing body connecting portion whereby the relative distance between the self-propelled transporter and the upper slewing body is variable. The steering angle setting unit sets the steering angle of the wheels of the self-propelled transporter according to the transporter angle detected by the transporter angle detecting unit so that the transporter angle approaches 90 degrees.

To provide a crane capable of stably traveling a transporter capable of supporting a counterweight in cooperation with slewing of an upper slewing body. The crane has a connecting body connecting the self-propelled transporter and the upper traveling body, a transporter angle detecting unit, and a steering angle setting unit. A transporter connecting portion of the connecting body is rotatably connected to the self-propelled transporter about a rotation center axis, and moves relative to a slewing body connecting portion whereby the relative distance between the self-propelled transporter and the upper slewing body is variable. The steering angle setting unit sets the steering angle of the wheels of the self-propelled transporter according to the transporter angle detected by the transporter angle detecting unit so that the transporter angle approaches 90 degrees.

The present apparatus relates to an apparatus for the guying of a lattice boom of a crane, in particular of a mobile crane, comprising a frame and two connection elements connected thereto, wherein the frame has first attachment means for a releasable connection of the apparatus to a guying of the crane and wherein the connection elements have two attachment means for a releasable fastening of the apparatus to the boom. In accordance with the invention, the apparatus can be assembled at the boom for assembly thereat and can be removed again after the boom has been assembled. The present invention further relates to a respective method for the in the air assembly and for the restoring to the original state and the guying of a lattice boom by means of the apparatus in accordance with the invention.

A hydraulic crane comprising: —a rotatable column (7); —a crane boom system (10) comprising two or more liftable and lowerable crane booms (11, 13); and —an electronic control device (25), which is configured to prevent an execution of crane boom movements that would make the lifting moment of the crane exceed the maximum allowed lifting moment of the crane, and to continuously establish position information as to the prevailing position of the load suspension point (P) of the crane boom system. When the lifting moment of the crane has reached a limit value at a given level below the maximum allowed lifting moment, the electronic control device is configured to prevent the execution of any combination of crane boom movements that would increase the horizontal distance between the load suspension point and said vertical axis of rotation and at the same time allow the execution of any combination of crane boom movements that keeps said horizontal distance unchanged or reduces said horizontal distance.