A crane creates a 3D map on the basis of three-dimensional information acquired by a three-dimensional information obtaining section that is provided on a boom. The three-dimensional information obtaining section: is configured to be capable of accumulating acquired three-dimensional information and to be capable of changing a measurement direction, a measurement range, and a measurement density; and creates the 3D map by superimposing accumulated three-dimensional information. When an operation signal for a swivel operation for a swivel base, a hoisting operation for the boom, or an extension/retraction operation for the boom has been detected, on the basis of the movement direction and movement speed of the boom as calculated from a detected value for the operation signal, the three-dimensional information obtaining section: changes the measurement direction; and narrows the measurement range and increases the measurement density as compared to when the operation signal has not been detected.

A problem to be addressed by the present invention is to provide a remote operation terminal and work vehicle comprising said remote operation terminal for enabling easy and straightforward carrying out of a remote operation of a work device. Provided is a remote operation terminal (32) of a crane device (6), said terminal comprising: a terminal-side control device (42) being a control part for controlling an operation of the remote operation terminal (32) and configured to enable communication with a control device (31) of the crane device (6); a load movement operation instrument (35) being a first operation part for remotely operating the crane device (6); and a reference change operation instrument (34) being a second operation part for setting a reference of an operation direction of the crane device (6) operated by the load movement operation instrument (35). The terminal-side control device (42): computes the operation direction of the crane device (6) with regard to the operation of the load movement operation instrument (35) on the basis of the setting value of the reference change operation instrument (34), and transmits said direction to the control device (31); and prevents a change of the setting value while the load movement operation instrument (35) is being operated.

A hydraulic system for controlling bleed down and retraction of a boom within a safety envelope includes a backup battery power supply, and at least a first boom lift hydraulic cylinder configured to raise and lower the boom. The first boom lift hydraulic cylinder includes a solenoid bleed valve electrically connected to the backup battery power supply. The hydraulic system also includes an input device controllable by an operator of the boom. The input device may, for instance, be used by the operator to initiate bleed down and retraction of the boom from an elevated position. To accommodate independent failsafe features of the system, the input device is configured to selectively actuate the solenoid bleed valve using electrical power supplied from the backup battery power supply.

Provides is a crane in which the manipulation according to an operator's intention is more easily performed. The crane includes a manipulating member capable of performing at least one of an accelerator manipulation for increasing or decreasing a rotational speed of an engine and a turning manipulation of a turning body. A predetermined operation is stopped in a case where an operator is not touching the manipulating member and the predetermined operation (turning operation, traveling operation, or the like) of the crane is performed.

Provides is a crane in which the manipulation according to an operator's intention is more easily performed. The crane includes a manipulating member capable of performing at least one of an accelerator manipulation for increasing or decreasing a rotational speed of an engine and a turning manipulation of a turning body. A predetermined operation is stopped in a case where an operator is not touching the manipulating member and the predetermined operation (turning operation, traveling operation, or the like) of the crane is performed.

A crane in which a boom that is capable of derricking and extending/retracting is provided to a swiveling base includes: an operable-range-setting unit that sets an operable range in which a load being transported can be transported, the operable range being set according to the weight of the load; a path generation unit that generates, within the set operable range, a plurality of nodes through which the load can pass and a plurality of paths connecting adjacent nodes; and a transport path determination unit that determines a transport path of the load on the basis of a priority sequence for actuating a plurality of actuators of the crane, the transport path satisfying a prescribed condition, and being determined from the generated plurality of nodes and plurality of paths.

A crane in which a boom that is capable of derricking and extending/retracting is provided to a swiveling base includes: an operable-range-setting unit that sets an operable range in which a load being transported can be transported, the operable range being set according to the weight of the load; a path generation unit that generates, within the set operable range, a plurality of nodes through which the load can pass and a plurality of paths connecting adjacent nodes; and a transport path determination unit that determines a transport path of the load on the basis of a priority sequence for actuating a plurality of actuators of the crane, the transport path satisfying a prescribed condition, and being determined from the generated plurality of nodes and plurality of paths.

The invention relates to a method for operating multiple cranes (1, 2), the movements of which are monitored for imminent collisions by anti-collision devices of the cranes, and to cranes comprising at least one movement device for moving a crane element, a control unit (13) for actuating the movement device, and an anti-collision device (17, 18) for monitoring the crane movements of the crane element for possible collisions with another crane. According to the invention, in the event of an imminent collision between a first crane (1) being operated and a second crane (2) which is not being operated, the first crane is stopped; a remote control connection (21) is established from the first crane to the second crane; the second crane is moved out of the collision region (130), which is interfering with an intended movement of the first crane, by means of control commands, which are provided at the first stopped crane and transmitted to the second crane by the remote control connection; the second crane is stopped after being moved out of the collision region by remote control; and the first crane is started up again so that the first crane can carry out its task.

The invention relates to a method for operating multiple cranes (1, 2), the movements of which are monitored for imminent collisions by anti-collision devices of the cranes, and to cranes comprising at least one movement device for moving a crane element, a control unit (13) for actuating the movement device, and an anti-collision device (17, 18) for monitoring the crane movements of the crane element for possible collisions with another crane. According to the invention, in the event of an imminent collision between a first crane (1) being operated and a second crane (2) which is not being operated, the first crane is stopped; a remote control connection (21) is established from the first crane to the second crane; the second crane is moved out of the collision region (130), which is interfering with an intended movement of the first crane, by means of control commands, which are provided at the first stopped crane and transmitted to the second crane by the remote control connection; the second crane is stopped after being moved out of the collision region by remote control; and the first crane is started up again so that the first crane can carry out its task.

Provided are a crane and a path generation system that can generate a transport path capable of avoiding an obstacle even. if the obstacle moves. The crane (1) includes a boom (7) and a hook (10) suspended from the boom (7) by a wire rope (8) and transports a load (W) in a state in which the load W is suspended from the hook (10), the crane (1) being equipped with a sensor (camera (55)) that detects the position of an obstacle (worker X), and a control device (20) that generates a transport path CR by arranging a plurality of node points P(n) in an area containing a lifting-up point (Ps) and a lifting-down point (Pe) of the load W and connecting the node points P(n). The control device (20) generates a new transport path (CR) after increasing the number of node points P(n) arranged around the obstacle (X) when the sensor (55) detects movement of the obstacle (X).