Abstract: The crane includes a rotating part composed of a jib and of a counterjib, and a mechanism for slewing the rotating part that has at least one geared motor unit with a motor and reduction gear, and an internal main brake which is deactivated when the crane is placed out of service, in order to allow the rotating part to slew freely according to the direction of the wind. The geared motor unit also includes an internal auxiliary brake which is interposed between the motor and the reduction gear and which is activated when the crane is placed out of service in order to exert on the rotating part a braking torque which avoids uncontrolled rotation of said part when placed in weathervaning mode. The auxiliary brake can be designed to exert an adjustable braking torque.

Abstract: Apparatus and methods are disclosed that are useful for robotic gantry systems that are lightweight while at the same time offering rigidity or stiffness for implementation in Contour Crafting construction and material delivery techniques. The present disclosure is directed to robotic gantry system and material transport apparatus that use of very light structural members that have sufficient compressive strength, but which may otherwise be weak in the presence of bending forces, in conjunction with cables that provide stiffness against bending. Use of such cables provides needed tension while at the same time allowing the robotic gantry system to be very light compared to solid structures, e.g., those with I-beams, etc. Material delivery systems including passive articulated arms are also disclosed.

Abstract: The present invention shows a crane control of a crane which includes at least one cable for lifting a load, wherein at least one sensor unit is provided for determining a cable angle relative to the direction of gravitational force. Furthermore, there is shown a crane control for driving the positioners of a crane which includes at least one first and one second strand of cables for lifting the load, with a load oscillation damping for damping spherical pendular oscillations of the load, wherein first and second sensor units are provided, which are associated to the first and second strands of cables, in order to determine the respective cable angles and/or cable angular velocities, and the load oscillation damping includes a control in which the cable angles and/or cable angular velocities determined by the first and second sensor units are considered. Furthermore, a corresponding crane and a method are shown.

Abstract: The present invention relates to a turbomachine comprising an air compressor (3) and a lubrication circuit with an oil tank (1), said oil tank (1) being possibly isolated from the rest of the lubrication circuit (4,4A; 6,6A) by means of an isolation valve (7), wherein the isolation valve (7) is configured so as to: operate, i.e. to close and open respectively as the engine (2) stops and starts; remain open when the engine (2) is running; remain closed when the engine (2) is stopped.

Abstract: A wind tower erection device and method for erecting wind turbine towers which avoid the need for using expensive cranes. The device and method employs a stacker unit for anchoring to the wind turbine foundation, a plurality of intermediate modules, and a mechanical actuator for raising the intermediate modules vertically. The stacker unit has a receptacle allowing for lateral sliding of intermediate modules inside of the stacker unit. In one embodiment, the stacker unit has a receptacle for lateral sliding of intermediate modules inside of the stacker unit. The stacker unit and the intermediate modules each have at least one open side to for positioning of tower sections within the stacker unit and stacked intermediate modules. A bridge crane section is initially placed on top of the stacked intermediate modules.

Abstract: According to an emergency brake device for an elevator, a brake body is capable of coming into and out of contact with an outer periphery of a sheave which is rotatable, and is capable of being displaced to a rotation direction of the sheave while maintaining a contact with the outer periphery of the sheave. Further, the brake body is arranged between the sheave and a gripper metal. The gripper metal includes an inclined portion which is caused to incline with respect to the outer periphery of the sheave. When the brake body is displaced in the rotation direction of the sheave, the brake body is meshed between the outer periphery of the sheave and the inclined portion. To the brake body, a connecting portion capable of being displaced with respect to the sheave is connected. The connecting body is displaced in a direction in which the brake body comes into and out of contact with the outer periphery of the sheave by a brake drive device.

Abstract: An elevator door panel for closing the opening to an elevator shaft comprising a generally planar steel sheet reinforced on the shaft side by a perimeter framework and intermediate vertical stiffening members. At its lower edge the panel includes a resilient seal member supported on a structural steel construction that is generally symmetrical about a vertical plane at a mid-section of the panel thickness.

Abstract: An articulated jib for moving a load is supported on a base and comprises a first jib arm pivotably connected to a base. The first jib arm functions as a bascule and is pivotable about a first axis. There is a first counterweight disposed on the first jib arm. A second jib arm is pivotably connected to the first jib arm and is pivotable about a second axis. A linking rod connects the second jib arm to a lever arm which is also pivotably connected to the base. There is a second counterweight disposed on the lever arm.

Abstract: A mobile lift crane includes a carbody and at least four crawlers attached to the carbody, each crawler having a crawler frame attached to the carbody by a trunnion having an axis. The crawler frame is attached to the carbody so as to be able to pivot with respect to the carbody about the axis of the trunnion. The crane also includes a rotating bed rotatably connected to the carbody such that the rotating bed can swing with respect to the crawlers and a boom pivotally mounted on a front portion of the rotating bed. A linear actuator is connected between the crawler frame and the carbody and extends through the trunnion. The linear actuator is part of a self attachment mechanism. The trunnion includes a tubular member with a longitudinal axis, a first end configured for connection to the crane carbody and a second end configured for connection to the crawler frame. At least one of the ends is configured to allow rotational movement of the crawler frame relative to the carbody about the longitudinal axis.

Abstract: An assembly has a mechanically movable element (1), by the movement of which an oscillatory system (2) can be excited to perform an oscillation which has a resonant frequency (f) and a corresponding oscillatory period (T). First of all, a control device (4) moves the mechanically movable element (1) at a first speed (v1). If the control device (4) is stipulated a second speed (v2) by an operator (7), the control device (4) determines a jolt profile, by means of which the speed (v) of the mechanically movable element (1) is changed to the second speed (v2), and moves the mechanically movable element (1) according to the determined jolt profile. Said control device (4) determines the jolt profile in such a way that an oscillation of the oscillatory system (2) which is excited at the beginning of the speed change is calmed at the end of the speed change.

Abstract: An assist system is configured for moving a mass vertically, along a Z axis. The assist system includes a vertical actuation system, a cable, a plurality of pulleys, an actuator, and a mass. The pulleys are operatively attached to the support structure and an assist device that is movable attached to the support structure. The cable is routed around each of the pulleys and attached to the support structure. One of the pulleys supports the mass. The mass moves vertically in response to the actuator.

Abstract: A multi-use truck bed apparatus, comprising a first rack assembly, a second rack assembly, a base assembly coupled to the truck, wherein the first rack assembly and second rack assembly are coupled to the base assembly, and a lifting mechanism, wherein the lifting mechanism comprises a winch coupled to the second rack assembly.

Abstract: A system for reading substrate carriers that includes at least one overhead transport vehicle (OHT) utilizing at least one device for at least one of sensing and/or reading a substrate carrier, and/or wafers arranged therein, when the substrate carrier is proximate the at least one overhead transport vehicle. A method of sensing or reading a substrate carrier includes sensing and/or reading a substrate carrier and/or wafers arranged therein with the overhead transport vehicle.

Abstract: A mast includes a base section, an outer telescopic section and an inner telescopic section which are raised and lowered by a pair of main lift cylinders. A fork carriage is slidably mounted to the inner telescopic section and is raised and lowered thereon by a pair of free lift cylinders. The mast elements are arranged to form two mast columns which produce minimum obstruction to the truck operator's field of view when looking forward through the mast.

Abstract: The invention relates to a radio remote control unit for an operating device, comprising a radio transmitter for transmitting control command signals for the operating device and a radio reception unit assigned to the operating device for receiving control command signals of the radio transmitter and for converting the control command signals into control signals for controlling the operating functions of the operating device, characterized in that the radio transmitter has a sensor unit for detecting at least one irregular force induction state and/or an irregular movement state and/or at least one irregular positional state of the radio transmitter and is equipped to change its radio transmission performance in a specific manner on detection of the irregular state, and the radio reception unit is equipped to trigger an emergency control signal on detecting the specific change in the radio transmission performance of the radio transmitter to influence the operating functions of the operating device in a pred

Abstract: The invention relates to a method and an arrangement for preventing disturbing noise caused by the counterweight of an elevator. At first temporary tightening means (8), e.g. slings provided with tightening elements (9), are fitted and tightened around the counterweight (1). After this the actual tightening means (10), e.g. steel belts, are fitted and tightened around the counterweight (1), after which the slings are removed.

Abstract: A mobile lift crane includes a carbody, a rotating bed, a boom, a moveable counterweight unit, at least one linear actuation device and at least one arm pivotally connected at a first end to the rotating bed and at a second end to the linear actuation device. The arm and linear actuation device are connected between the rotating bed and the counterweight unit such that extension and retraction of the linear actuation device changes the position of the counterweight unit. In one method of operation, the counterweight is never supported by the ground during crane pick, move and set operations other than indirectly by the ground engaging members on the carbody. One embodiment includes a counterweight movement structure having a rectangular rack with at least first and third pinion gears engaged with teeth on one side and second and fourth pinion gears engaged with teeth on the opposing side.

Abstract: A sealing device for an elevator door includes a doorway member, doors, a movable member, a push-down mechanism and a sealing mechanism. The doorway member is provided for a gate. The doors open or close along the doorway member. The movable member is set horizontally and provided to be movable in a vertical direction in the doorway member, and it is urged upwards by an urging unit. The push-down mechanism pushes down the movable member against the force of the urging unit just before the doors are closed. The sealing mechanism is kept non-contact with the doors while they are moving, and seals the gap between the doors and the doorway member as it is brought into contact with upper section of the doors when the movable member is pushed down by the push-down mechanism.

Abstract: A crankshaft of an internal combustion engine has journals provided with shaft oil passages for carrying the oil to crankpins, and guide grooves having parts in which the shaft oil passages open, respectively, and opening in the cylindrical surfaces of the journals, respectively. The guide grooves has downstream end parts into which the shaft oil passages open, respectively, and extend in a circumferential direction in which the crankshaft rotates from the downstream end parts, respectively. First half bearing members of bearings are provided in their bearing surfaces with oil grooves through which the oil is supplied to the guide grooves, respectively. Each of the oil grooves are diametrically opposite to each of the guide grooves. The oil grooves have an axial width (W5) smaller than the axial width (W3) of the guide grooves. Thus oil leakage from gaps between each of the bearings and each of the journals of the crankshaft is reduced and hence an oil pump having a small capacity can be used.

Abstract: The present invention refers to a process to permit descent to sea bottom, with the use of two conventional tug boats, of equipment used in submarine field oil field exploration, especially descent of equipment of large size and mass in deep water fields. Equipment is being suspended by a sling, attached to an auxiliary component. This, on its turn, is attached to two cables, each one activated by one of the two tug boats. Connection of the auxiliary component to cables is being made by means of connectors, which are trespassed thru cable openings and attached to auxiliary component by screws, forming a connection, in which connectors may carry out a pivotal movement around holes of auxiliary component. This movement of said connectors almost entirely absorbs oscillations of tug boats caused by waves, without transmitting same to equipment. In this way, both tug boats may lower equipment and cross the so-called resonance area without risk of its occurrence.