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7558645 |
Overhead travelling carriage system
A height sensor 26 and an image recognizing section 28 are installed in a teaching unit 24 ; the height sensor 26 contacts a pin 30 a on a load port 4 to detect the height position of...
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7490728 |
Crane
A crane, in particular to an offshore crane, having a hoist rope winch, a hydraulic hoist winch drive and an overload protection which is connected to the hoist winch drive and which, when a...
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7353959 |
Variable-speed load-dependent drive and hoist system
In an embodiment, a crane including a hoisting (i.e., load-lifting) mechanism is provided with a variable-speed load-dependent control system and method for operating functions of the crane. An...
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7267241 |
Device for determining a load on a hoist
The invention relates to a device for determining a load on a hoist of a crane for handling a container, including rope drum, drive motor as well as hoist transmission disposed between drive motor...
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7252203 |
Mobile crane having a superlift device
A mobile crane with a carrier and a superstructure which is slewably arranged thereon has a superlift device with an SL counterweight for increasing lifting capacity. The SL counterweight can be...
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7014054 |
Overturning moment measurement system
A stability measurement system is provided for a lifting vehicle including a vehicle frame, a turntable secured to the vehicle frame and supporting lifting components of the vehicle frame, and a...
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6994223 |
Diagnostic readout for operation of a crane
A programmable control system for a crane that senses a hydraulic pressure of the lift mechanism, and controls the movements of the crane apparatus as a function of the magnitude of the hydraulic...
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6991119 |
Measurement system and method for assessing lift vehicle stability
A measurement system uses dual axis force sensor pins to effectively assess the tipping moment of a load-bearing vehicle and anticipate imminent tipping in any direction. The pins are installed in...
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6985795 |
Material handler with center of gravity monitoring system
A material handler that includes a frame, first and second front wheels, first and second rear wheels, and a control system. The front and rear wheels define a generally horizontal plane. The...
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6843383 |
Jib load limiting device
A load limiting device for a jib extension includes a pivotal insert adjacent the tip of the jib extension, a cable sheave mounted on the insert, a force measuring device for measuring forces...
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6785597 |
Hydraulic stabilizer system and process for monitoring load conditions
A process for monitoring load conditions on a lifting machine having a rated load moment includes determining an actual load moment of the lifting machine due a weighted load. The actual load...
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6779961 |
Material handler with electronic load chart
The present invention is directed to a material handler that includes a frame, a telescoping boom, a boom extension sensor, a boom angle sensor, and a control system. The telescoping boom is...
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6735486 |
Side load detection and protection system for rotatable equipment
A side load detection and protection system ( 10 ) operable using pressure sensors ( 26, 28 ) to determine side load as a function of a difference in media pressure between two ports ( 40, 42 ) of...
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6655662 |
Method for controlling crane brake operation
The invention relates to a method for controlling the operation of a crane brake, the crane comprising an electric motor ( 2 ) controlled by means of a frequency converter ( 10 ) for hoisting and...
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6634514 |
Control monitoring device for tower cranes
The invention relates to a control monitoring device for tower cranes, in particular for small cranes, with integration of functions, and adapted for radio control. The device comprises, in respect...
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6587795 |
Method for the overload protection of a mobile crane
The invention relates to a method for the overload protection of a mobile crane, in particular of a crawler-mounted crane, in which component-related geometrical data are stored in a memory. In...
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6578441 |
Crane testing apparatus and associated load testing method
Two groups of test weights are stacked on a horizontal base frame transported to an aligned position underlying a crane to be tested for loading capacity. Such base frame is loaded with the test...
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6536615 |
Load moment indicator of crane
An load moment indicator, in a crane provided with hoist means of a main side and an auxiliary side, including a calculator in which a reference value if a rated load determined by the stability of...
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6527130 |
Method and system for load measurement in a crane hoist
The invention provides a load measurement in a crane hoist system. A parameter adaptation process uses a model of the system in order to measure the lifted load. A controller monitors hoist speed...
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6474922 |
Remote operation auxiliary hoist control and precision load positioner
An electromechanical, remotely operated Auxiliary Hoist Control and Precision Load Positioner system and device is disclosed utilizing a Radio Frequency Hand Controller transceiver Unit distal to a...
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6405114 |
Aerial work platform boom having ground and platform controls linked by a controller area network
An aerial work platform supported by a riser boom, a telescoping main boom, and a jib boom. Boom movement may be controlled by a platform control module or a ground control module connected to a...
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6170681 |
Swing type machine and method for setting a safe work area and a rated load in same
A method for setting a safe work area and a rated load in a swing type work machine, as well as a swing type work machine which utilizes the said method, are disclosed. An area where a...
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6079576 |
Control device for a hoist mechanism of a crane
The present invention relates to a control device for a hoist mechanism of a crane, preferably for a crane with a jib which can be varied in length and be luffed, with a hydraulic motor driving the...
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6062106 |
Side load sensor
A side load sensor is provided for sensing the longitudinal load on a rotary worm which is used to rotate a turret on a utility vehicle and wherein a boom is mounted on the rotatable turret. The...
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6050430 |
Automatic leveling and synchronization system for counterweight removal and installation
The automatic leveling and synchronization system for raising and lowering a counterweight includes at least a primary and secondary cylinder connected in series hydraulic communication. The...
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6044991 |
Load measuring apparatus for aerial booms and jibs
A load measuring device for an aerial machine having a boom or jib which handles loads. A load bearing sheave has a winch line passed over it to raise and lower the load. A guide sheave maintains...
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5992655 |
Caterpillar sideboom replacement assembly
A replacement assembly is provided for retrofitting old, discontinued, mechanically-operated, low-drive, Caterpillar sidebooms with a hydraulically-operated fail-safe sideboom system. Conversion of...
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5877693 |
Method and apparatus for measuring the length of a multi-section telescopic boom
The boom length measurement includes a transmitting unit mounted on the fly section of a multi-section telescopic boom, and a receiving unit mounted on the base section of the multi-section...
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5813551 |
Crane vehicle
The present invention relates to a crane vehicle with a jib, preferably a telescoping jib, hinged to its superstructure which jib can be luffed by a luffing ram which is hinged to the jib and the...
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5803278 |
Overhead traveling carriage
An overhead travelling carriage is provided wherein three drums are arranged on a base of a hoist unit along the sides of an imaginary equilateral triangle. Two motors and a brake are arranged...
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5732835 |
Crane control device
An object of this invention is to improve safety in a crane. A boom control signal αr and a winch control signal βr are simultaneously outputted to, respectively, a boom drive portion and a winch...
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5711440 |
Suspension load and tipping moment detecting apparatus for a mobile crane
The present invention relates to a suspension load and tipping moment calculating apparatus for a mobile crane which can calculate a suspension load and a tipping moment with high accuracy and use...
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5597080 |
Snag load protection system for a crane
A snag load protection system for a train including a guide frame, a sheave housing slidably received within the guide frame, and a hydraulic cylinder connected to the guide frame and to the sheave...
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5557526 |
Load monitoring system for booms
A system for and method of monitoring the operation of a boom are disclosed. A first parameter is sensed, the first parameter being indicative of a load on a first boom component. It is determined...
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5538149 |
Control systems for the lifting moment of vehicle mounted booms
In a vehicle mounted digger derrick or crane, the moment applied to the boom by a lift cylinder is controlled in a customized manner to more fully utilize the structural strength of the machine at...
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5392935 |
Control system for cable crane
A cable crane system includes a main cable stretched between two points, a transverse trolley traveling along the main cable, a traction cable for driving the trolley, a bucket hung by a hanging...
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5282136 |
Vertical releasing control device of crane hanging load
For use where a hanging load 81 is vertically hung and released with a crane having either a jib or a boom which can be raised or lowered, or where a long hanging load 81 is raised from its lowered...
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5263597 |
Crane load instrument and method therefor
A crane load detection system is provided having an electronic strain gage located in series with the deadline of the boom and located adjacent the gantry tie-down of the deadline of the boom. A...
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5251768 |
Method and device for controlling braking of an upper rotary body of a construction machine and a device for calculating the inclination angle of the upper rotary body
A method and device is adapted for controlling rotation of an upper rotary body of a construction machine, the upper rotary body being rotatably mounted on a lower body of the construction machine...
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5224815 |
Industrial truck with a monitoring apparatus for the loading state
An industrial truck designed, for example, as a counterweight fork lift truck has a lifting stand 2, which is pivotable around a tilting axis N situated crosswise to the vehicular longitudinal axis...
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5217126 |
Safety apparatus for construction equipment
A safety apparatus which can set an appropriate rated load curve which can be grasped readily by an operator and takes a difference between horizontal extension amounts of outrigger jacks into...
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5163570 |
Load sensing device for a boom mounted on a vehicle
The present invention comprises a hydraulic sensing means to be used in connection with a worm/worm wheel gear arrangement for articulating a boom mounted on a vehicle. A hydraulic chamber on each...
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5160056 |
Safety device for crane
A safety device for a crane which can make a safety operation precisely taking a relationship between a swinging condition of a boom and a limit working region into consideration. In the device, a...
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5160055 |
Load moment indicator system
A load moment indicator system for lift equipment, the system including a sensor embedded in a solid portion of the piston rod of the lifting cylinder of the equipment for generating a signal which...
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5076449 |
Load measurement system for boom mounted auxiliary arm
A boom lift apparatus for use on a truck having a boom and a boom mounted bucket includes a mast selectively positionable on the boom at any of a plurality of different angles and supported on the...
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5058752 |
Boom overload warning and control system
A boom apparatus for use in lifting and transporting a payload includes a boom pivotally mounted on a support structure and including base and outer boom sections, the outer boom section being...
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4997095 |
Methods of and system for swing damping movement of suspended objects
A payload suspended from a gantry is swing damped in accordance with a control algorithm based on the periodic motion of the suspended mass or by servoing on the forces induced by the suspended mass.
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4955777 |
Aircraft ground handling tractor
An aircraft ground handling tractor (1) includes a manoeuverable boom (6) mounted on it. The free end of the manoeuverable boom (6) includes a connector (18) capable of being connected to an...
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4921385 |
Truck with a hand-operatable bed
This invention relates to a truck with a hand-operatable bed provided with wheels for use in moving, a hydraulic cylinder for lifting or lowering the bed, and a plunger pump for feeding oil into...
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4906981 |
Method and apparatus for monitoring the effective load carried by a crane
This is a method and apparatus for monitoring the effective load carried by a crane having a luffing boom of variable effective length. The method includes generating a first signal corresponding...
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