The invention relates to a grab device with a carrier implement and a rope grab arranged thereon which has a grab frame which is held on the carrier implement via a holding rope, at least two grab shovels which are pivotably supported on a lower end of the grab frame between a closed position and an open position, and an actuating means with an actuating rope for pivoting the grab shovels, wherein an actuating rope is guided from the carrier implement to the actuating means and the carrier implement has a driven first rope winch for the holding rope and a driven second rope winch for the actuating rope. In accordance with the invention provision is made in that a first detection means for detecting a first rope force on the holding rope and a second detection means for detecting a second rope force on the actuating rope are provided and in that a control means is provided which is connected to the first detection means, the second detection means, the first rope winch and the second rope winch and which, depending on the detected first rope force on the holding rope and the detected second rope force on the actuating rope, is designed to activate the first rope winch and/or the second rope winch according to a control program specification.

The invention relates to a construction machine having a mast and a lifting element which can be moved up and down along the mast with a hoist rope. The hoist rope can be activated by means of two rope winches. At least one first rope winch is designed as a free fall winch, wherein the hoist rope can be lowered in free fall. To lower the hoist rope a controller is provided, with which the first rope winch, which is designed as a free fall winch, can be switched into a free fall mode. Meanwhile, a second rope winch is operated in force-locking manner.

The invention relates to a construction machine having a mast and a lifting element which can be moved up and down along the mast with a hoist rope. The hoist rope can be activated by means of two rope winches. At least one first rope winch is designed as a free fall winch, wherein the hoist rope can be lowered in free fall. To lower the hoist rope a controller is provided, with which the first rope winch, which is designed as a free fall winch, can be switched into a free fall mode. Meanwhile, a second rope winch is operated in force-locking manner.

Disclosed is a sample collection apparatus. The sample collection apparatus relates to a sample collection apparatus configured to be capable of stably collecting sediment from a seabed without disturbing the same and to be capable of easily separating and transporting a box itself containing a sample from the sample collection apparatus. Briefly, the sample collection apparatus includes a frame section, a vertical operation section, and a rotary operation section.

Four cable operated scissors grab (1), comprising a pair of scissor levers (2a, 2b) that are connected via a pivot joint to pivot about a pivoting axis (4), which scissor levers each include a grab shell (5a, 5b) and a hoist cable connection (6a, 6b) situated on a first side of the lever with respect to the pivot joint, and a closing cable connection (8a, 8b) situated on a second side of the lever that is opposite with respect to the pivot joint, so that in use a dedicated hoisting cable is fastened to each lever on the first side of the lever, and a dedicated closing cable is fastened to each lever at the second side of the lever. The scissor levers each include a sheave (12a, 12b) on the second side of the lever, and said sheaves are each arranged as a first and final closing sheave, so that in use each of the two closing cables extend in a single pass from a closing cable connection on the second side of one lever via the closing sheave on the second side of the other lever to depart from the grab and continue upward to a crane carrying the grab.

An industrial machine that includes a plurality of components, an identification tag reader, an actuator, and a controller. The plurality of components is installed in the industrial machine and each of the plurality of components includes an identification tag. The identification tag reader is receives a signal from each of the plurality of identification tags, and each signal received from the plurality of identification tags is specific to a respective one of the plurality of components. The controller identifies the plurality of components that is installed in the industrial machine based on the signals from each of the plurality of identification tags, compares the identified plurality of components to a predetermined list of components that are expected to be installed in the industrial machine, and modifies an operational setting of an operating parameter when the identified plurality of components does not match the predetermined list of components.

The invention relates to a civil engineering device, in particular cable grab, with a support apparatus, a processing unit, which is configured to carry out a civil engineering step and is held by way of at least one cable on the support apparatus, at least one cable winch for operating the cable, wherein the cable winch has a winch drum and an associated winch motor for driving the winch drum rotationally, at least one free fall brake, which is arranged on the at least one cable winch, wherein in a closed state of the free fall brake, the winch drum is coupled to the associated winch motor, in a partially open state of the free fall brake, a relative movement is possible between winch drum and winch motor, wherein a torque that is dependent on the degree of opening of the free fall brake is transmitted in the free fall brake, and in an open state the winch drum is decoupled from the associated winch motor and is substantially freely rotatable with respect to this. It is provided according to the invention that an electronic control device is arranged for the controlled opening, partial opening and closing of the free fall brake by means of at least one control element, that a lowering speed and/or a lowering path can be preset as target values in the control device, that at least one detection device is arranged, which is configured to detect a lowering speed of the processing unit and/or a lowering path as actual values, and that the control device is connected to the at least one detection device and is configured to control opening, partial opening and closing of the free fall brake depending on the actual values detected so that the actual values approach the preset target values.

An industrial machine that includes a plurality of components, an identification tag reader, an actuator, and a controller. The plurality of components is installed in the industrial machine and each of the plurality of components includes an identification tag. The identification tag reader is receives a signal from each of the plurality of identification tags, and each signal received from the plurality of identification tags is specific to a respective one of the plurality of components. The controller identifies the plurality of components that is installed in the industrial machine based on the signals from each of the plurality of identification tags, compares the identified plurality of components to a predetermined list of components that are expected to be installed in the industrial machine, and modifies an operational setting of an operating parameter when the identified plurality of components does not match the predetermined list of components.

The invention relates to a construction machine having a mast and a lifting element which can be moved up and down along the mast with a hoist rope. The hoist rope can be activated by means of two rope winches. At least one first rope winch is designed as a free fall winch, wherein the hoist rope can be lowered in free fall. To lower the hoist rope a controller is provided, with which the first rope winch, which is designed as a free fall winch, can be switched into a free fall mode. Meanwhile, a second rope winch is operated in force-locking manner.

The invention relates to a construction machine having a mast and a lifting element which can be moved up and down along the mast with a hoist rope. The hoist rope can be activated by means of two rope winches. At least one first rope winch is designed as a free fall winch, wherein the hoist rope can be lowered in free fall. To lower the hoist rope a controller is provided, with which the first rope winch, which is designed as a free fall winch, can be switched into a free fall mode. Meanwhile, a second rope winch is operated in force-locking manner.